TSTP Solution File: SEU160+2 by LEO-II---1.7.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : LEO-II---1.7.0
% Problem  : SEU160+2 : TPTP v8.1.0. Released v3.3.0.
% Transfm  : none
% Format   : tptp
% Command  : leo --timeout %d --proofoutput 1 --foatp e --atp e=./eprover %s

% Computer : n006.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 600s
% DateTime : Tue Jul 19 12:07:20 EDT 2022

% Result   : Theorem 1.03s 1.27s
% Output   : CNFRefutation 2.24s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   26
%            Number of leaves      :  128
% Syntax   : Number of formulae    : 2241 (1156 unt;  38 typ;   0 def)
%            Number of atoms       : 14965 (5933 equ;   0 cnn)
%            Maximal formula atoms :    6 (   6 avg)
%            Number of connectives : 32675 (6061   ~;5289   |; 250   &;20954   @)
%                                         (  65 <=>;  56  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   13 (   3 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   73 (  73   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   41 (  38 usr;   7 con; 0-4 aty)
%            Number of variables   : 6763 (   0   ^6749   !;  14   ?;6763   :)

% Comments : 
%------------------------------------------------------------------------------
thf(tp_cartesian_product2,type,
    cartesian_product2: $i > $i > $i ).

thf(tp_disjoint,type,
    disjoint: $i > $i > $o ).

thf(tp_empty,type,
    empty: $i > $o ).

thf(tp_empty_set,type,
    empty_set: $i ).

thf(tp_in,type,
    in: $i > $i > $o ).

thf(tp_ordered_pair,type,
    ordered_pair: $i > $i > $i ).

thf(tp_powerset,type,
    powerset: $i > $i ).

thf(tp_proper_subset,type,
    proper_subset: $i > $i > $o ).

thf(tp_sK10_D,type,
    sK10_D: $i > $i > $i > $i ).

thf(tp_sK11_C,type,
    sK11_C: $i > $i > $i ).

thf(tp_sK12_E,type,
    sK12_E: $i > $i > $i > $i > $i ).

thf(tp_sK13_SY186,type,
    sK13_SY186: $i > $i > $i > $i > $i ).

thf(tp_sK14_D,type,
    sK14_D: $i > $i > $i > $i ).

thf(tp_sK15_SY189,type,
    sK15_SY189: $i > $i > $i > $i ).

thf(tp_sK16_SY191,type,
    sK16_SY191: $i > $i > $i > $i ).

thf(tp_sK17_D,type,
    sK17_D: $i > $i > $i > $i ).

thf(tp_sK18_D,type,
    sK18_D: $i > $i > $i > $i ).

thf(tp_sK19_C,type,
    sK19_C: $i > $i > $i ).

thf(tp_sK1_A,type,
    sK1_A: $i ).

thf(tp_sK20_B,type,
    sK20_B: $i > $i ).

thf(tp_sK21_C,type,
    sK21_C: $i > $i > $i ).

thf(tp_sK22_C,type,
    sK22_C: $i > $i > $i ).

thf(tp_sK23_C,type,
    sK23_C: $i > $i > $i ).

thf(tp_sK2_SY183,type,
    sK2_SY183: $i ).

thf(tp_sK3_C,type,
    sK3_C: $i > $i > $i ).

thf(tp_sK4_A,type,
    sK4_A: $i ).

thf(tp_sK5_A,type,
    sK5_A: $i ).

thf(tp_sK6_D,type,
    sK6_D: $i > $i > $i > $i ).

thf(tp_sK7_D,type,
    sK7_D: $i > $i > $i > $i ).

thf(tp_sK8_C,type,
    sK8_C: $i > $i > $i ).

thf(tp_sK9_SY185,type,
    sK9_SY185: $i > $i > $i ).

thf(tp_set_difference,type,
    set_difference: $i > $i > $i ).

thf(tp_set_intersection2,type,
    set_intersection2: $i > $i > $i ).

thf(tp_set_union2,type,
    set_union2: $i > $i > $i ).

thf(tp_singleton,type,
    singleton: $i > $i ).

thf(tp_subset,type,
    subset: $i > $i > $o ).

thf(tp_union,type,
    union: $i > $i ).

thf(tp_unordered_pair,type,
    unordered_pair: $i > $i > $i ).

thf(1,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( empty @ A )
        & ( A != B )
        & ( empty @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t8_boole) ).

thf(2,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( in @ A @ B )
        & ( empty @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t7_boole) ).

thf(3,axiom,
    ! [A: $i] :
      ( ( empty @ A )
     => ( A = empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t6_boole) ).

thf(4,axiom,
    ! [A: $i] :
      ( ( set_difference @ empty_set @ A )
      = empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t4_boole) ).

thf(5,axiom,
    ! [A: $i] :
      ( ( set_difference @ A @ empty_set )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t3_boole) ).

thf(6,axiom,
    ! [A: $i,B: $i] :
      ( ! [C: $i] :
          ( ( in @ C @ A )
        <=> ( in @ C @ B ) )
     => ( A = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t2_tarski) ).

thf(7,axiom,
    ! [A: $i] :
      ( ( set_intersection2 @ A @ empty_set )
      = empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t2_boole) ).

thf(8,axiom,
    ! [A: $i] :
      ( ( set_union2 @ A @ empty_set )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t1_boole) ).

thf(9,axiom,
    ! [A: $i,B: $i] :
      ( ( disjoint @ A @ B )
     => ( disjoint @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',symmetry_r1_xboole_0) ).

thf(10,axiom,
    ! [A: $i,B: $i] : ( subset @ A @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',reflexivity_r1_tarski) ).

thf(11,axiom,
    ? [A: $i] :
      ~ ( empty @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rc2_xboole_0) ).

thf(12,axiom,
    ? [A: $i] : ( empty @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rc1_xboole_0) ).

thf(13,axiom,
    ! [A: $i,B: $i] :
      ~ ( proper_subset @ A @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',irreflexivity_r2_xboole_0) ).

thf(14,axiom,
    ! [A: $i,B: $i] :
      ( ( set_intersection2 @ A @ A )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',idempotence_k3_xboole_0) ).

thf(15,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ A )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',idempotence_k2_xboole_0) ).

thf(16,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ B @ A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc3_xboole_0) ).

thf(17,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ A @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc2_xboole_0) ).

thf(18,axiom,
    ! [A: $i,B: $i] :
      ~ ( empty @ ( ordered_pair @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc1_zfmisc_1) ).

thf(19,axiom,
    empty @ empty_set,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc1_xboole_0) ).

thf(20,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k4_xboole_0) ).

thf(21,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k4_tarski) ).

thf(22,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k3_xboole_0) ).

thf(23,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k3_tarski) ).

thf(24,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k2_zfmisc_1) ).

thf(25,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k2_xboole_0) ).

thf(26,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k2_tarski) ).

thf(27,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k1_zfmisc_1) ).

thf(28,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k1_xboole_0) ).

thf(29,axiom,
    $true,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k1_tarski) ).

thf(30,axiom,
    ! [A: $i,B: $i] :
      ( ( proper_subset @ A @ B )
    <=> ( ( subset @ A @ B )
        & ( A != B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d8_xboole_0) ).

thf(31,axiom,
    ! [A: $i,B: $i] :
      ( ( disjoint @ A @ B )
    <=> ( ( set_intersection2 @ A @ B )
        = empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d7_xboole_0) ).

thf(32,axiom,
    ! [A: $i,B: $i] :
      ( ( ordered_pair @ A @ B )
      = ( unordered_pair @ ( unordered_pair @ A @ B ) @ ( singleton @ A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d5_tarski) ).

thf(33,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( set_difference @ A @ B ) )
    <=> ! [D: $i] :
          ( ( in @ D @ C )
        <=> ( ( in @ D @ A )
            & ~ ( in @ D @ B ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d4_xboole_0) ).

thf(34,axiom,
    ! [A: $i,B: $i] :
      ( ( B
        = ( union @ A ) )
    <=> ! [C: $i] :
          ( ( in @ C @ B )
        <=> ? [D: $i] :
              ( ( in @ C @ D )
              & ( in @ D @ A ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d4_tarski) ).

thf(35,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( set_intersection2 @ A @ B ) )
    <=> ! [D: $i] :
          ( ( in @ D @ C )
        <=> ( ( in @ D @ A )
            & ( in @ D @ B ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d3_xboole_0) ).

thf(36,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ B )
    <=> ! [C: $i] :
          ( ( in @ C @ A )
         => ( in @ C @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d3_tarski) ).

thf(37,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( cartesian_product2 @ A @ B ) )
    <=> ! [D: $i] :
          ( ( in @ D @ C )
        <=> ? [E: $i,F: $i] :
              ( ( in @ E @ A )
              & ( in @ F @ B )
              & ( D
                = ( ordered_pair @ E @ F ) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d2_zfmisc_1) ).

thf(38,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( set_union2 @ A @ B ) )
    <=> ! [D: $i] :
          ( ( in @ D @ C )
        <=> ( ( in @ D @ A )
            | ( in @ D @ B ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d2_xboole_0) ).

thf(39,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( unordered_pair @ A @ B ) )
    <=> ! [D: $i] :
          ( ( in @ D @ C )
        <=> ( ( D = A )
            | ( D = B ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d2_tarski) ).

thf(40,axiom,
    ! [A: $i,B: $i] :
      ( ( B
        = ( powerset @ A ) )
    <=> ! [C: $i] :
          ( ( in @ C @ B )
        <=> ( subset @ C @ A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d1_zfmisc_1) ).

thf(41,axiom,
    ! [A: $i] :
      ( ( A = empty_set )
    <=> ! [B: $i] :
          ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d1_xboole_0) ).

thf(42,axiom,
    ! [A: $i,B: $i] :
      ( ( B
        = ( singleton @ A ) )
    <=> ! [C: $i] :
          ( ( in @ C @ B )
        <=> ( C = A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d1_tarski) ).

thf(43,axiom,
    ! [A: $i,B: $i] :
      ( ( A = B )
    <=> ( ( subset @ A @ B )
        & ( subset @ B @ A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d10_xboole_0) ).

thf(44,axiom,
    ! [A: $i,B: $i] :
      ( ( set_intersection2 @ A @ B )
      = ( set_intersection2 @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',commutativity_k3_xboole_0) ).

thf(45,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ B )
      = ( set_union2 @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',commutativity_k2_xboole_0) ).

thf(46,axiom,
    ! [A: $i,B: $i] :
      ( ( unordered_pair @ A @ B )
      = ( unordered_pair @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',commutativity_k2_tarski) ).

thf(47,axiom,
    ! [A: $i,B: $i] :
      ( ( proper_subset @ A @ B )
     => ~ ( proper_subset @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',antisymmetry_r2_xboole_0) ).

thf(48,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',antisymmetry_r2_hidden) ).

thf(49,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( singleton @ A )
        = ( unordered_pair @ B @ C ) )
     => ( B = C ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t9_zfmisc_1) ).

thf(50,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( singleton @ A )
        = ( unordered_pair @ B @ C ) )
     => ( A = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t8_zfmisc_1) ).

thf(51,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( subset @ A @ B )
        & ( subset @ C @ B ) )
     => ( subset @ ( set_union2 @ A @ C ) @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t8_xboole_1) ).

thf(52,axiom,
    ! [A: $i,B: $i] :
      ( ( disjoint @ A @ B )
    <=> ( ( set_difference @ A @ B )
        = A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t83_xboole_1) ).

thf(53,axiom,
    ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t7_xboole_1) ).

thf(54,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
     => ( A = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t6_zfmisc_1) ).

thf(55,axiom,
    ! [A: $i] :
      ( ( unordered_pair @ A @ A )
      = ( singleton @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t69_enumset1) ).

thf(56,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( subset @ A @ B )
        & ( disjoint @ B @ C ) )
     => ( disjoint @ A @ C ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t63_xboole_1) ).

thf(57,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( subset @ A @ B )
        & ( proper_subset @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t60_xboole_1) ).

thf(58,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( ~ ( disjoint @ A @ B )
          & ! [C: $i] :
              ~ ( in @ C @ ( set_intersection2 @ A @ B ) ) )
      & ~ ( ? [C: $i] : ( in @ C @ ( set_intersection2 @ A @ B ) )
          & ( disjoint @ A @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t4_xboole_0) ).

thf(59,axiom,
    ! [A: $i,B: $i] :
      ( ( set_difference @ A @ ( set_difference @ A @ B ) )
      = ( set_intersection2 @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t48_xboole_1) ).

thf(60,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ B )
     => ( B
        = ( set_union2 @ A @ ( set_difference @ B @ A ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t45_xboole_1) ).

thf(61,axiom,
    ! [A: $i,B: $i] :
      ( ( set_difference @ ( set_union2 @ A @ B ) @ B )
      = ( set_difference @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t40_xboole_1) ).

thf(62,axiom,
    ! [A: $i] :
      ( ( subset @ A @ empty_set )
     => ( A = empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t3_xboole_1) ).

thf(63,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( ~ ( disjoint @ A @ B )
          & ! [C: $i] :
              ~ ( ( in @ C @ A )
                & ( in @ C @ B ) ) )
      & ~ ( ? [C: $i] :
              ( ( in @ C @ A )
              & ( in @ C @ B ) )
          & ( disjoint @ A @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t3_xboole_0) ).

thf(64,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ ( set_difference @ B @ A ) )
      = ( set_union2 @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t39_xboole_1) ).

thf(65,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( subset @ ( unordered_pair @ A @ B ) @ C )
    <=> ( ( in @ A @ C )
        & ( in @ B @ C ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t38_zfmisc_1) ).

thf(66,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ ( singleton @ A ) @ B )
    <=> ( in @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t37_zfmisc_1) ).

thf(67,axiom,
    ! [A: $i,B: $i] :
      ( ( ( set_difference @ A @ B )
        = empty_set )
    <=> ( subset @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t37_xboole_1) ).

thf(68,axiom,
    ! [A: $i,B: $i] : ( subset @ ( set_difference @ A @ B ) @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t36_xboole_1) ).

thf(69,axiom,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( ( ordered_pair @ A @ B )
        = ( ordered_pair @ C @ D ) )
     => ( ( A = C )
        & ( B = D ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t33_zfmisc_1) ).

thf(70,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( subset @ A @ B )
     => ( subset @ ( set_difference @ A @ C ) @ ( set_difference @ B @ C ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t33_xboole_1) ).

thf(71,axiom,
    ! [A: $i] : ( subset @ empty_set @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t2_xboole_1) ).

thf(72,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ B )
     => ( ( set_intersection2 @ A @ B )
        = A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t28_xboole_1) ).

thf(73,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( subset @ A @ B )
     => ( subset @ ( set_intersection2 @ A @ C ) @ ( set_intersection2 @ B @ C ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t26_xboole_1) ).

thf(74,axiom,
    ( ( powerset @ empty_set )
    = ( singleton @ empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t1_zfmisc_1) ).

thf(75,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( subset @ A @ B )
        & ( subset @ B @ C ) )
     => ( subset @ A @ C ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t1_xboole_1) ).

thf(76,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( subset @ A @ B )
        & ( subset @ A @ C ) )
     => ( subset @ A @ ( set_intersection2 @ B @ C ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t19_xboole_1) ).

thf(77,axiom,
    ! [A: $i,B: $i] : ( subset @ ( set_intersection2 @ A @ B ) @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t17_xboole_1) ).

thf(78,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ B )
     => ( ( set_union2 @ A @ B )
        = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t12_xboole_1) ).

thf(79,axiom,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ~ ( ( ( unordered_pair @ A @ B )
          = ( unordered_pair @ C @ D ) )
        & ( A != C )
        & ( A != D ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t10_zfmisc_1) ).

thf(80,axiom,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
    <=> ( ( in @ A @ C )
        & ( in @ B @ D ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l55_zfmisc_1) ).

thf(81,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ( subset @ A @ ( union @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l50_zfmisc_1) ).

thf(82,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ ( singleton @ B ) )
    <=> ( ( A = empty_set )
        | ( A
          = ( singleton @ B ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l4_zfmisc_1) ).

thf(83,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( subset @ A @ B )
     => ( ( in @ C @ A )
        | ( subset @ A @ ( set_difference @ B @ ( singleton @ C ) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l3_zfmisc_1) ).

thf(84,axiom,
    ! [A: $i,B: $i] :
      ( ( ( set_difference @ A @ B )
        = empty_set )
    <=> ( subset @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l32_xboole_1) ).

thf(85,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ ( singleton @ A ) @ B )
    <=> ( in @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l2_zfmisc_1) ).

thf(86,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( in @ A @ B )
     => ( disjoint @ ( singleton @ A ) @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l28_zfmisc_1) ).

thf(87,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( disjoint @ ( singleton @ A ) @ B )
        & ( in @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l25_zfmisc_1) ).

thf(88,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ( ( set_union2 @ ( singleton @ A ) @ B )
        = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l23_zfmisc_1) ).

thf(89,axiom,
    ! [A: $i] :
      ( ( singleton @ A )
     != empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l1_zfmisc_1) ).

thf(90,conjecture,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ ( singleton @ B ) )
    <=> ( ( A = empty_set )
        | ( A
          = ( singleton @ B ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t39_zfmisc_1) ).

thf(91,negated_conjecture,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ ( singleton @ B ) )
        <=> ( ( A = empty_set )
            | ( A
              = ( singleton @ B ) ) ) ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[90]) ).

thf(92,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ ( singleton @ B ) )
        <=> ( ( A = empty_set )
            | ( A
              = ( singleton @ B ) ) ) ) )
    = $false ),
    inference(unfold_def,[status(thm)],[91]) ).

thf(93,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( empty @ A )
            & ( A != B )
            & ( empty @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1]) ).

thf(94,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( in @ A @ B )
            & ( empty @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[2]) ).

thf(95,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
         => ( A = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[3]) ).

thf(96,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ empty_set @ A )
          = empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[4]) ).

thf(97,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ A @ empty_set )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[5]) ).

thf(98,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ( in @ C @ A )
            <=> ( in @ C @ B ) )
         => ( A = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[6]) ).

thf(99,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ empty_set )
          = empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[7]) ).

thf(100,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[8]) ).

thf(101,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
         => ( disjoint @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[9]) ).

thf(102,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[10]) ).

thf(103,plain,
    ( ( ? [A: $i] :
          ~ ( empty @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[11]) ).

thf(104,plain,
    ( ( ? [A: $i] : ( empty @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[12]) ).

thf(105,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( proper_subset @ A @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[13]) ).

thf(106,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_intersection2 @ A @ A )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[14]) ).

thf(107,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[15]) ).

thf(108,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[16]) ).

thf(109,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[17]) ).

thf(110,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( empty @ ( ordered_pair @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[18]) ).

thf(111,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(unfold_def,[status(thm)],[19]) ).

thf(112,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[20]) ).

thf(113,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[21]) ).

thf(114,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[22]) ).

thf(115,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[23]) ).

thf(116,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[24]) ).

thf(117,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[25]) ).

thf(118,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[26]) ).

thf(119,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[27]) ).

thf(120,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[28]) ).

thf(121,plain,
    $true = $true,
    inference(unfold_def,[status(thm)],[29]) ).

thf(122,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( proper_subset @ A @ B )
        <=> ( ( subset @ A @ B )
            & ( A != B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[30]) ).

thf(123,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
        <=> ( ( set_intersection2 @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[31]) ).

thf(124,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ordered_pair @ A @ B )
          = ( unordered_pair @ ( unordered_pair @ A @ B ) @ ( singleton @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[32]) ).

thf(125,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( set_difference @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( in @ D @ A )
                & ~ ( in @ D @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[33]) ).

thf(126,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( union @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ? [D: $i] :
                  ( ( in @ C @ D )
                  & ( in @ D @ A ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[34]) ).

thf(127,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( set_intersection2 @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( in @ D @ A )
                & ( in @ D @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[35]) ).

thf(128,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
        <=> ! [C: $i] :
              ( ( in @ C @ A )
             => ( in @ C @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[36]) ).

thf(129,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( cartesian_product2 @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ? [E: $i,F: $i] :
                  ( ( in @ E @ A )
                  & ( in @ F @ B )
                  & ( D
                    = ( ordered_pair @ E @ F ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[37]) ).

thf(130,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( set_union2 @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( in @ D @ A )
                | ( in @ D @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[38]) ).

thf(131,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( C
            = ( unordered_pair @ A @ B ) )
        <=> ! [D: $i] :
              ( ( in @ D @ C )
            <=> ( ( D = A )
                | ( D = B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[39]) ).

thf(132,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( powerset @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ( subset @ C @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[40]) ).

thf(133,plain,
    ( ( ! [A: $i] :
          ( ( A = empty_set )
        <=> ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[41]) ).

thf(134,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( singleton @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ( C = A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[42]) ).

thf(135,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
        <=> ( ( subset @ A @ B )
            & ( subset @ B @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[43]) ).

thf(136,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_intersection2 @ A @ B )
          = ( set_intersection2 @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[44]) ).

thf(137,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[45]) ).

thf(138,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( unordered_pair @ A @ B )
          = ( unordered_pair @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[46]) ).

thf(139,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( proper_subset @ A @ B )
         => ~ ( proper_subset @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[47]) ).

thf(140,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[48]) ).

thf(141,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
            = ( unordered_pair @ B @ C ) )
         => ( B = C ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[49]) ).

thf(142,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
            = ( unordered_pair @ B @ C ) )
         => ( A = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[50]) ).

thf(143,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ C @ B ) )
         => ( subset @ ( set_union2 @ A @ C ) @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[51]) ).

thf(144,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
        <=> ( ( set_difference @ A @ B )
            = A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[52]) ).

thf(145,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[53]) ).

thf(146,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
         => ( A = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[54]) ).

thf(147,plain,
    ( ( ! [A: $i] :
          ( ( unordered_pair @ A @ A )
          = ( singleton @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[55]) ).

thf(148,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( disjoint @ B @ C ) )
         => ( disjoint @ A @ C ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[56]) ).

thf(149,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( subset @ A @ B )
            & ( proper_subset @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[57]) ).

thf(150,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( ~ ( disjoint @ A @ B )
              & ! [C: $i] :
                  ~ ( in @ C @ ( set_intersection2 @ A @ B ) ) )
          & ~ ( ? [C: $i] : ( in @ C @ ( set_intersection2 @ A @ B ) )
              & ( disjoint @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[58]) ).

thf(151,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ A @ ( set_difference @ A @ B ) )
          = ( set_intersection2 @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[59]) ).

thf(152,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
         => ( B
            = ( set_union2 @ A @ ( set_difference @ B @ A ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[60]) ).

thf(153,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ ( set_union2 @ A @ B ) @ B )
          = ( set_difference @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[61]) ).

thf(154,plain,
    ( ( ! [A: $i] :
          ( ( subset @ A @ empty_set )
         => ( A = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[62]) ).

thf(155,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( ~ ( disjoint @ A @ B )
              & ! [C: $i] :
                  ~ ( ( in @ C @ A )
                    & ( in @ C @ B ) ) )
          & ~ ( ? [C: $i] :
                  ( ( in @ C @ A )
                  & ( in @ C @ B ) )
              & ( disjoint @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[63]) ).

thf(156,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ ( set_difference @ B @ A ) )
          = ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[64]) ).

thf(157,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( subset @ ( unordered_pair @ A @ B ) @ C )
        <=> ( ( in @ A @ C )
            & ( in @ B @ C ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[65]) ).

thf(158,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ B )
        <=> ( in @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[66]) ).

thf(159,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[67]) ).

thf(160,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ ( set_difference @ A @ B ) @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[68]) ).

thf(161,plain,
    ( ( ! [A: $i,B: $i,C: $i,D: $i] :
          ( ( ( ordered_pair @ A @ B )
            = ( ordered_pair @ C @ D ) )
         => ( ( A = C )
            & ( B = D ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[69]) ).

thf(162,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( subset @ A @ B )
         => ( subset @ ( set_difference @ A @ C ) @ ( set_difference @ B @ C ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[70]) ).

thf(163,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[71]) ).

thf(164,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
         => ( ( set_intersection2 @ A @ B )
            = A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[72]) ).

thf(165,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( subset @ A @ B )
         => ( subset @ ( set_intersection2 @ A @ C ) @ ( set_intersection2 @ B @ C ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[73]) ).

thf(166,plain,
    ( ( ( powerset @ empty_set )
      = ( singleton @ empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[74]) ).

thf(167,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ B @ C ) )
         => ( subset @ A @ C ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[75]) ).

thf(168,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ A @ C ) )
         => ( subset @ A @ ( set_intersection2 @ B @ C ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[76]) ).

thf(169,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ ( set_intersection2 @ A @ B ) @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[77]) ).

thf(170,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
         => ( ( set_union2 @ A @ B )
            = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[78]) ).

thf(171,plain,
    ( ( ! [A: $i,B: $i,C: $i,D: $i] :
          ~ ( ( ( unordered_pair @ A @ B )
              = ( unordered_pair @ C @ D ) )
            & ( A != C )
            & ( A != D ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[79]) ).

thf(172,plain,
    ( ( ! [A: $i,B: $i,C: $i,D: $i] :
          ( ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
        <=> ( ( in @ A @ C )
            & ( in @ B @ D ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[80]) ).

thf(173,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( subset @ A @ ( union @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[81]) ).

thf(174,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ ( singleton @ B ) )
        <=> ( ( A = empty_set )
            | ( A
              = ( singleton @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[82]) ).

thf(175,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( subset @ A @ B )
         => ( ( in @ C @ A )
            | ( subset @ A @ ( set_difference @ B @ ( singleton @ C ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[83]) ).

thf(176,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[84]) ).

thf(177,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ B )
        <=> ( in @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[85]) ).

thf(178,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
         => ( disjoint @ ( singleton @ A ) @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[86]) ).

thf(179,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( disjoint @ ( singleton @ A ) @ B )
            & ( in @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[87]) ).

thf(180,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[88]) ).

thf(181,plain,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[89]) ).

thf(182,plain,
    ( ( ! [SY183: $i] :
          ( ( subset @ sK1_A @ ( singleton @ SY183 ) )
        <=> ( ( sK1_A = empty_set )
            | ( sK1_A
              = ( singleton @ SY183 ) ) ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[92]) ).

thf(183,plain,
    ( ( ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) )
    <=> ( ( sK1_A = empty_set )
        | ( sK1_A
          = ( singleton @ sK2_SY183 ) ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[182]) ).

thf(184,plain,
    ( ( ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) )
     => ( ( sK1_A = empty_set )
        | ( sK1_A
          = ( singleton @ sK2_SY183 ) ) ) )
    = $false ),
    inference(split_conjecture,[split_conjecture(split,[])],[183]) ).

thf(185,plain,
    ( ( ( ( sK1_A = empty_set )
        | ( sK1_A
          = ( singleton @ sK2_SY183 ) ) )
     => ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) ) )
    = $false ),
    inference(split_conjecture,[split_conjecture(split,[])],[183]) ).

thf(186,plain,
    ( ( ~ ( ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) )
         => ( ( sK1_A = empty_set )
            | ( sK1_A
              = ( singleton @ sK2_SY183 ) ) ) ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[184]) ).

thf(187,plain,
    ( ( ~ ( ( ( sK1_A = empty_set )
            | ( sK1_A
              = ( singleton @ sK2_SY183 ) ) )
         => ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) ) ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[185]) ).

thf(188,plain,
    ( ( ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) )
      & ( sK1_A != empty_set )
      & ( sK1_A
       != ( singleton @ sK2_SY183 ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[186]) ).

thf(189,plain,
    ( ( ( ( sK1_A = empty_set )
        | ( sK1_A
          = ( singleton @ sK2_SY183 ) ) )
      & ~ ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[187]) ).

thf(190,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
          | ~ ( empty @ A )
          | ~ ( empty @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[93]) ).

thf(191,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ B )
          | ~ ( in @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[94]) ).

thf(192,plain,
    ( ( ! [A: $i] :
          ( ~ ( empty @ A )
          | ( A = empty_set ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[95]) ).

thf(193,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ~ ( in @ ( sK3_C @ B @ A ) @ A )
              | ~ ( in @ ( sK3_C @ B @ A ) @ B ) )
            & ( ( in @ ( sK3_C @ B @ A ) @ A )
              | ( in @ ( sK3_C @ B @ A ) @ B ) ) )
          | ( A = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[98]) ).

thf(194,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( disjoint @ B @ A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[101]) ).

thf(195,plain,
    ( ( ! [A: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[102]) ).

thf(196,plain,
    ( ( ~ ( empty @ sK4_A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[103]) ).

thf(197,plain,
    ( ( empty @ sK5_A )
    = $true ),
    inference(extcnf_combined,[status(esa)],[104]) ).

thf(198,plain,
    ( ( ! [A: $i] :
          ~ ( proper_subset @ A @ A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[105]) ).

thf(199,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ A )
          = A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[106]) ).

thf(200,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[107]) ).

thf(201,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[108]) ).

thf(202,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[109]) ).

thf(203,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
          | ~ ( subset @ A @ B )
          | ( proper_subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ A @ B )
          | ( A != B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ A @ B )
          | ( subset @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[122]) ).

thf(204,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_intersection2 @ A @ B )
           != empty_set )
          | ( disjoint @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( ( set_intersection2 @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[123]) ).

thf(205,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK6_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ B )
                  | ~ ( in @ ( sK6_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK6_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ C ) )
                & ( ~ ( in @ ( sK6_D @ C @ B @ A ) @ B )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ C ) ) )
              | ( C
                = ( set_difference @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( set_difference @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ A )
                    | ( in @ D @ B )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ A ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ~ ( in @ D @ B ) ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[125]) ).

thf(206,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ! [SY184: $i] :
                  ( ~ ( in @ ( sK8_C @ B @ A ) @ SY184 )
                  | ~ ( in @ SY184 @ A ) )
              | ~ ( in @ ( sK8_C @ B @ A ) @ B ) )
            & ( ( ( in @ ( sK8_C @ B @ A ) @ ( sK9_SY185 @ B @ A ) )
                & ( in @ ( sK9_SY185 @ B @ A ) @ A ) )
              | ( in @ ( sK8_C @ B @ A ) @ B ) ) )
          | ( B
            = ( union @ A ) ) )
      & ! [A: $i,B: $i] :
          ( ( B
           != ( union @ A ) )
          | ( ! [C: $i] :
                ( ! [D: $i] :
                    ( ~ ( in @ C @ D )
                    | ~ ( in @ D @ A ) )
                | ( in @ C @ B ) )
            & ! [C: $i] :
                ( ~ ( in @ C @ B )
                | ( ( in @ C @ ( sK7_D @ C @ B @ A ) )
                  & ( in @ ( sK7_D @ C @ B @ A ) @ A ) ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[126]) ).

thf(207,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK10_D @ C @ B @ A ) @ A )
                  | ~ ( in @ ( sK10_D @ C @ B @ A ) @ B )
                  | ~ ( in @ ( sK10_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK10_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK10_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK10_D @ C @ B @ A ) @ B )
                  | ( in @ ( sK10_D @ C @ B @ A ) @ C ) ) )
              | ( C
                = ( set_intersection2 @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( set_intersection2 @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ A )
                    | ~ ( in @ D @ B )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ A ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ B ) ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[127]) ).

thf(208,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( in @ ( sK11_C @ B @ A ) @ A )
            & ~ ( in @ ( sK11_C @ B @ A ) @ B ) )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] :
              ( ~ ( in @ C @ A )
              | ( in @ C @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[128]) ).

thf(209,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ! [SY187: $i,SY188: $i] :
                      ( ~ ( in @ SY187 @ A )
                      | ~ ( in @ SY188 @ B )
                      | ( ( sK14_D @ C @ B @ A )
                       != ( ordered_pair @ SY187 @ SY188 ) ) )
                  | ~ ( in @ ( sK14_D @ C @ B @ A ) @ C ) )
                & ( ( ( in @ ( sK15_SY189 @ C @ B @ A ) @ A )
                    & ( in @ ( sK16_SY191 @ C @ B @ A ) @ B )
                    & ( ( sK14_D @ C @ B @ A )
                      = ( ordered_pair @ ( sK15_SY189 @ C @ B @ A ) @ ( sK16_SY191 @ C @ B @ A ) ) ) )
                  | ( in @ ( sK14_D @ C @ B @ A ) @ C ) ) )
              | ( C
                = ( cartesian_product2 @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( cartesian_product2 @ A @ B ) )
              | ( ! [D: $i] :
                    ( ! [E: $i,F: $i] :
                        ( ~ ( in @ E @ A )
                        | ~ ( in @ F @ B )
                        | ( D
                         != ( ordered_pair @ E @ F ) ) )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( ( in @ ( sK12_E @ D @ C @ B @ A ) @ A )
                      & ( in @ ( sK13_SY186 @ D @ C @ B @ A ) @ B )
                      & ( D
                        = ( ordered_pair @ ( sK12_E @ D @ C @ B @ A ) @ ( sK13_SY186 @ D @ C @ B @ A ) ) ) ) ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[129]) ).

thf(210,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK17_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK17_D @ C @ B @ A ) @ A ) )
                & ( ~ ( in @ ( sK17_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK17_D @ C @ B @ A ) @ B ) )
                & ( ( in @ ( sK17_D @ C @ B @ A ) @ C )
                  | ( in @ ( sK17_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK17_D @ C @ B @ A ) @ B ) ) )
              | ( C
                = ( set_union2 @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( set_union2 @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ A )
                    | ( in @ D @ B ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ A )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ B )
                    | ( in @ D @ C ) ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[130]) ).

thf(211,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK18_D @ C @ B @ A ) @ C )
                  | ( ( sK18_D @ C @ B @ A )
                   != A ) )
                & ( ~ ( in @ ( sK18_D @ C @ B @ A ) @ C )
                  | ( ( sK18_D @ C @ B @ A )
                   != B ) )
                & ( ( in @ ( sK18_D @ C @ B @ A ) @ C )
                  | ( ( sK18_D @ C @ B @ A )
                    = A )
                  | ( ( sK18_D @ C @ B @ A )
                    = B ) ) )
              | ( C
                = ( unordered_pair @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( unordered_pair @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( D = A )
                    | ( D = B ) )
                & ! [D: $i] :
                    ( ( D != A )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ( D != B )
                    | ( in @ D @ C ) ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[131]) ).

thf(212,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ~ ( in @ ( sK19_C @ B @ A ) @ B )
              | ~ ( subset @ ( sK19_C @ B @ A ) @ A ) )
            & ( ( in @ ( sK19_C @ B @ A ) @ B )
              | ( subset @ ( sK19_C @ B @ A ) @ A ) ) )
          | ( B
            = ( powerset @ A ) ) )
      & ! [A: $i,B: $i] :
          ( ( B
           != ( powerset @ A ) )
          | ( ! [C: $i] :
                ( ~ ( in @ C @ B )
                | ( subset @ C @ A ) )
            & ! [C: $i] :
                ( ~ ( subset @ C @ A )
                | ( in @ C @ B ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[132]) ).

thf(213,plain,
    ( ( ! [A: $i] :
          ( ( in @ ( sK20_B @ A ) @ A )
          | ( A = empty_set ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[133]) ).

thf(214,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ( ( sK21_C @ B @ A )
               != A )
              | ~ ( in @ ( sK21_C @ B @ A ) @ B ) )
            & ( ( ( sK21_C @ B @ A )
                = A )
              | ( in @ ( sK21_C @ B @ A ) @ B ) ) )
          | ( B
            = ( singleton @ A ) ) )
      & ! [A: $i,B: $i] :
          ( ( B
           != ( singleton @ A ) )
          | ( ! [C: $i] :
                ( ( C != A )
                | ( in @ C @ B ) )
            & ! [C: $i] :
                ( ~ ( in @ C @ B )
                | ( C = A ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[134]) ).

thf(215,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ B @ A )
          | ( A = B ) )
      & ! [A: $i,B: $i] :
          ( ( A != B )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ( A != B )
          | ( subset @ B @ A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[135]) ).

thf(216,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ A @ B )
          | ~ ( proper_subset @ B @ A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[139]) ).

thf(217,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ~ ( in @ B @ A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[140]) ).

thf(218,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
           != ( unordered_pair @ B @ C ) )
          | ( B = C ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[141]) ).

thf(219,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ( singleton @ A )
             != ( unordered_pair @ B @ C ) )
          | ( A = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[142]) ).

thf(220,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ C @ B )
          | ( subset @ ( set_union2 @ A @ C ) @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[143]) ).

thf(221,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
           != A )
          | ( disjoint @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( ( set_difference @ A @ B )
            = A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[144]) ).

thf(222,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
          | ( A = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[146]) ).

thf(223,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( disjoint @ B @ C )
          | ~ ( subset @ A @ B )
          | ( disjoint @ A @ C ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[148]) ).

thf(224,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ B @ A )
          | ~ ( subset @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[149]) ).

thf(225,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
          | ( in @ ( sK22_C @ B @ A ) @ ( set_intersection2 @ A @ B ) ) )
      & ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ~ ( in @ C @ ( set_intersection2 @ A @ B ) )
          | ~ ( disjoint @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[150]) ).

thf(226,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( B
            = ( set_union2 @ A @ ( set_difference @ B @ A ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[152]) ).

thf(227,plain,
    ( ( ! [A: $i] :
          ( ~ ( subset @ A @ empty_set )
          | ( A = empty_set ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[154]) ).

thf(228,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
          | ( ( in @ ( sK23_C @ B @ A ) @ A )
            & ( in @ ( sK23_C @ B @ A ) @ B ) ) )
      & ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ~ ( in @ C @ A )
              | ~ ( in @ C @ B ) )
          | ~ ( disjoint @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[155]) ).

thf(229,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ~ ( in @ A @ C )
              | ~ ( in @ B @ C )
              | ( subset @ ( unordered_pair @ A @ B ) @ C ) )
          & ! [B: $i,C: $i] :
              ( ~ ( subset @ ( unordered_pair @ A @ B ) @ C )
              | ( in @ A @ C ) )
          & ! [B: $i,C: $i] :
              ( ~ ( subset @ ( unordered_pair @ A @ B ) @ C )
              | ( in @ B @ C ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[157]) ).

thf(230,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ ( singleton @ A ) @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ B )
          | ( in @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[158]) ).

thf(231,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
           != empty_set )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_difference @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[159]) ).

thf(232,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ! [D: $i] :
                  ( ( ordered_pair @ A @ B )
                 != ( ordered_pair @ C @ D ) )
              | ( A = C ) )
          & ! [C: $i,D: $i] :
              ( ( ( ordered_pair @ A @ B )
               != ( ordered_pair @ C @ D ) )
              | ( B = D ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[161]) ).

thf(233,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] : ( subset @ ( set_difference @ A @ C ) @ ( set_difference @ B @ C ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[162]) ).

thf(234,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_intersection2 @ A @ B )
            = A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[164]) ).

thf(235,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] : ( subset @ ( set_intersection2 @ A @ C ) @ ( set_intersection2 @ B @ C ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[165]) ).

thf(236,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ B @ C )
          | ( subset @ A @ C ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[167]) ).

thf(237,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ A @ C )
          | ( subset @ A @ ( set_intersection2 @ B @ C ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[168]) ).

thf(238,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_union2 @ A @ B )
            = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[170]) ).

thf(239,plain,
    ( ( ! [A: $i,B: $i,C: $i,D: $i] :
          ( ( A = D )
          | ( A = C )
          | ( ( unordered_pair @ A @ B )
           != ( unordered_pair @ C @ D ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[171]) ).

thf(240,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i,D: $i] :
              ( ~ ( in @ A @ C )
              | ~ ( in @ B @ D )
              | ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) ) )
          & ! [C: $i] :
              ( ! [D: $i] :
                  ~ ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
              | ( in @ A @ C ) )
          & ! [C: $i,D: $i] :
              ( ~ ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
              | ( in @ B @ D ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[172]) ).

thf(241,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ A @ ( union @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[173]) ).

thf(242,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ ( singleton @ B ) )
          | ( A = empty_set )
          | ( A
            = ( singleton @ B ) ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] : ( subset @ A @ ( singleton @ B ) ) )
      & ! [A: $i,B: $i] :
          ( ( A
           != ( singleton @ B ) )
          | ( subset @ A @ ( singleton @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[174]) ).

thf(243,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] :
              ( ( in @ C @ A )
              | ( subset @ A @ ( set_difference @ B @ ( singleton @ C ) ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[175]) ).

thf(244,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
           != empty_set )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_difference @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[176]) ).

thf(245,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ ( singleton @ A ) @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ B )
          | ( in @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[177]) ).

thf(246,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
          | ( disjoint @ ( singleton @ A ) @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[178]) ).

thf(247,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( disjoint @ ( singleton @ A ) @ B )
          | ~ ( in @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[179]) ).

thf(248,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[180]) ).

thf(249,plain,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[181]) ).

thf(250,plain,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[249]) ).

thf(251,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[248]) ).

thf(252,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( disjoint @ ( singleton @ A ) @ B )
          | ~ ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[247]) ).

thf(253,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
          | ( disjoint @ ( singleton @ A ) @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[246]) ).

thf(254,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ ( singleton @ A ) @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ B )
          | ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[245]) ).

thf(255,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
           != empty_set )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_difference @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[244]) ).

thf(256,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] :
              ( ( in @ C @ A )
              | ( subset @ A @ ( set_difference @ B @ ( singleton @ C ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[243]) ).

thf(257,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ ( singleton @ B ) )
          | ( A = empty_set )
          | ( A
            = ( singleton @ B ) ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] : ( subset @ A @ ( singleton @ B ) ) )
      & ! [A: $i,B: $i] :
          ( ( A
           != ( singleton @ B ) )
          | ( subset @ A @ ( singleton @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[242]) ).

thf(258,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ A @ ( union @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[241]) ).

thf(259,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i,D: $i] :
              ( ~ ( in @ A @ C )
              | ~ ( in @ B @ D )
              | ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) ) )
          & ! [C: $i] :
              ( ! [D: $i] :
                  ~ ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
              | ( in @ A @ C ) )
          & ! [C: $i,D: $i] :
              ( ~ ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
              | ( in @ B @ D ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[240]) ).

thf(260,plain,
    ( ( ! [A: $i,B: $i,C: $i,D: $i] :
          ( ( A = D )
          | ( A = C )
          | ( ( unordered_pair @ A @ B )
           != ( unordered_pair @ C @ D ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[239]) ).

thf(261,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_union2 @ A @ B )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[238]) ).

thf(262,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ ( set_intersection2 @ A @ B ) @ A ) )
    = $true ),
    inference(copy,[status(thm)],[169]) ).

thf(263,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ A @ C )
          | ( subset @ A @ ( set_intersection2 @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[237]) ).

thf(264,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ B @ C )
          | ( subset @ A @ C ) ) )
    = $true ),
    inference(copy,[status(thm)],[236]) ).

thf(265,plain,
    ( ( ( powerset @ empty_set )
      = ( singleton @ empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[166]) ).

thf(266,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] : ( subset @ ( set_intersection2 @ A @ C ) @ ( set_intersection2 @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[235]) ).

thf(267,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_intersection2 @ A @ B )
            = A ) ) )
    = $true ),
    inference(copy,[status(thm)],[234]) ).

thf(268,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(copy,[status(thm)],[163]) ).

thf(269,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] : ( subset @ ( set_difference @ A @ C ) @ ( set_difference @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[233]) ).

thf(270,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ! [D: $i] :
                  ( ( ordered_pair @ A @ B )
                 != ( ordered_pair @ C @ D ) )
              | ( A = C ) )
          & ! [C: $i,D: $i] :
              ( ( ( ordered_pair @ A @ B )
               != ( ordered_pair @ C @ D ) )
              | ( B = D ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[232]) ).

thf(271,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ ( set_difference @ A @ B ) @ A ) )
    = $true ),
    inference(copy,[status(thm)],[160]) ).

thf(272,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
           != empty_set )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_difference @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[231]) ).

thf(273,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ ( singleton @ A ) @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ B )
          | ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[230]) ).

thf(274,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ~ ( in @ A @ C )
              | ~ ( in @ B @ C )
              | ( subset @ ( unordered_pair @ A @ B ) @ C ) )
          & ! [B: $i,C: $i] :
              ( ~ ( subset @ ( unordered_pair @ A @ B ) @ C )
              | ( in @ A @ C ) )
          & ! [B: $i,C: $i] :
              ( ~ ( subset @ ( unordered_pair @ A @ B ) @ C )
              | ( in @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[229]) ).

thf(275,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ ( set_difference @ B @ A ) )
          = ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[156]) ).

thf(276,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
          | ( ( in @ ( sK23_C @ B @ A ) @ A )
            & ( in @ ( sK23_C @ B @ A ) @ B ) ) )
      & ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ~ ( in @ C @ A )
              | ~ ( in @ C @ B ) )
          | ~ ( disjoint @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[228]) ).

thf(277,plain,
    ( ( ! [A: $i] :
          ( ~ ( subset @ A @ empty_set )
          | ( A = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[227]) ).

thf(278,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ ( set_union2 @ A @ B ) @ B )
          = ( set_difference @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[153]) ).

thf(279,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( B
            = ( set_union2 @ A @ ( set_difference @ B @ A ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[226]) ).

thf(280,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ A @ ( set_difference @ A @ B ) )
          = ( set_intersection2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[151]) ).

thf(281,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
          | ( in @ ( sK22_C @ B @ A ) @ ( set_intersection2 @ A @ B ) ) )
      & ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ~ ( in @ C @ ( set_intersection2 @ A @ B ) )
          | ~ ( disjoint @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[225]) ).

thf(282,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ B @ A )
          | ~ ( subset @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[224]) ).

thf(283,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( disjoint @ B @ C )
          | ~ ( subset @ A @ B )
          | ( disjoint @ A @ C ) ) )
    = $true ),
    inference(copy,[status(thm)],[223]) ).

thf(284,plain,
    ( ( ! [A: $i] :
          ( ( unordered_pair @ A @ A )
          = ( singleton @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[147]) ).

thf(285,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
          | ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[222]) ).

thf(286,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[145]) ).

thf(287,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
           != A )
          | ( disjoint @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( ( set_difference @ A @ B )
            = A ) ) )
    = $true ),
    inference(copy,[status(thm)],[221]) ).

thf(288,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ C @ B )
          | ( subset @ ( set_union2 @ A @ C ) @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[220]) ).

thf(289,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ( singleton @ A )
             != ( unordered_pair @ B @ C ) )
          | ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[219]) ).

thf(290,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
           != ( unordered_pair @ B @ C ) )
          | ( B = C ) ) )
    = $true ),
    inference(copy,[status(thm)],[218]) ).

thf(291,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[217]) ).

thf(292,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ A @ B )
          | ~ ( proper_subset @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[216]) ).

thf(293,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( unordered_pair @ A @ B )
          = ( unordered_pair @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[138]) ).

thf(294,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[137]) ).

thf(295,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_intersection2 @ A @ B )
          = ( set_intersection2 @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[136]) ).

thf(296,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ B @ A )
          | ( A = B ) )
      & ! [A: $i,B: $i] :
          ( ( A != B )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ( A != B )
          | ( subset @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[215]) ).

thf(297,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ( ( sK21_C @ B @ A )
               != A )
              | ~ ( in @ ( sK21_C @ B @ A ) @ B ) )
            & ( ( ( sK21_C @ B @ A )
                = A )
              | ( in @ ( sK21_C @ B @ A ) @ B ) ) )
          | ( B
            = ( singleton @ A ) ) )
      & ! [A: $i,B: $i] :
          ( ( B
           != ( singleton @ A ) )
          | ( ! [C: $i] :
                ( ( C != A )
                | ( in @ C @ B ) )
            & ! [C: $i] :
                ( ~ ( in @ C @ B )
                | ( C = A ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[214]) ).

thf(298,plain,
    ( ( ! [A: $i] :
          ( ( in @ ( sK20_B @ A ) @ A )
          | ( A = empty_set ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[213]) ).

thf(299,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ~ ( in @ ( sK19_C @ B @ A ) @ B )
              | ~ ( subset @ ( sK19_C @ B @ A ) @ A ) )
            & ( ( in @ ( sK19_C @ B @ A ) @ B )
              | ( subset @ ( sK19_C @ B @ A ) @ A ) ) )
          | ( B
            = ( powerset @ A ) ) )
      & ! [A: $i,B: $i] :
          ( ( B
           != ( powerset @ A ) )
          | ( ! [C: $i] :
                ( ~ ( in @ C @ B )
                | ( subset @ C @ A ) )
            & ! [C: $i] :
                ( ~ ( subset @ C @ A )
                | ( in @ C @ B ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[212]) ).

thf(300,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK18_D @ C @ B @ A ) @ C )
                  | ( ( sK18_D @ C @ B @ A )
                   != A ) )
                & ( ~ ( in @ ( sK18_D @ C @ B @ A ) @ C )
                  | ( ( sK18_D @ C @ B @ A )
                   != B ) )
                & ( ( in @ ( sK18_D @ C @ B @ A ) @ C )
                  | ( ( sK18_D @ C @ B @ A )
                    = A )
                  | ( ( sK18_D @ C @ B @ A )
                    = B ) ) )
              | ( C
                = ( unordered_pair @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( unordered_pair @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( D = A )
                    | ( D = B ) )
                & ! [D: $i] :
                    ( ( D != A )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ( D != B )
                    | ( in @ D @ C ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[211]) ).

thf(301,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK17_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK17_D @ C @ B @ A ) @ A ) )
                & ( ~ ( in @ ( sK17_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK17_D @ C @ B @ A ) @ B ) )
                & ( ( in @ ( sK17_D @ C @ B @ A ) @ C )
                  | ( in @ ( sK17_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK17_D @ C @ B @ A ) @ B ) ) )
              | ( C
                = ( set_union2 @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( set_union2 @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ A )
                    | ( in @ D @ B ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ A )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ B )
                    | ( in @ D @ C ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[210]) ).

thf(302,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ! [SY187: $i,SY188: $i] :
                      ( ~ ( in @ SY187 @ A )
                      | ~ ( in @ SY188 @ B )
                      | ( ( sK14_D @ C @ B @ A )
                       != ( ordered_pair @ SY187 @ SY188 ) ) )
                  | ~ ( in @ ( sK14_D @ C @ B @ A ) @ C ) )
                & ( ( ( in @ ( sK15_SY189 @ C @ B @ A ) @ A )
                    & ( in @ ( sK16_SY191 @ C @ B @ A ) @ B )
                    & ( ( sK14_D @ C @ B @ A )
                      = ( ordered_pair @ ( sK15_SY189 @ C @ B @ A ) @ ( sK16_SY191 @ C @ B @ A ) ) ) )
                  | ( in @ ( sK14_D @ C @ B @ A ) @ C ) ) )
              | ( C
                = ( cartesian_product2 @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( cartesian_product2 @ A @ B ) )
              | ( ! [D: $i] :
                    ( ! [E: $i,F: $i] :
                        ( ~ ( in @ E @ A )
                        | ~ ( in @ F @ B )
                        | ( D
                         != ( ordered_pair @ E @ F ) ) )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( ( in @ ( sK12_E @ D @ C @ B @ A ) @ A )
                      & ( in @ ( sK13_SY186 @ D @ C @ B @ A ) @ B )
                      & ( D
                        = ( ordered_pair @ ( sK12_E @ D @ C @ B @ A ) @ ( sK13_SY186 @ D @ C @ B @ A ) ) ) ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[209]) ).

thf(303,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( in @ ( sK11_C @ B @ A ) @ A )
            & ~ ( in @ ( sK11_C @ B @ A ) @ B ) )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] :
              ( ~ ( in @ C @ A )
              | ( in @ C @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[208]) ).

thf(304,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK10_D @ C @ B @ A ) @ A )
                  | ~ ( in @ ( sK10_D @ C @ B @ A ) @ B )
                  | ~ ( in @ ( sK10_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK10_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK10_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK10_D @ C @ B @ A ) @ B )
                  | ( in @ ( sK10_D @ C @ B @ A ) @ C ) ) )
              | ( C
                = ( set_intersection2 @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( set_intersection2 @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ A )
                    | ~ ( in @ D @ B )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ A ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ B ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[207]) ).

thf(305,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ! [SY184: $i] :
                  ( ~ ( in @ ( sK8_C @ B @ A ) @ SY184 )
                  | ~ ( in @ SY184 @ A ) )
              | ~ ( in @ ( sK8_C @ B @ A ) @ B ) )
            & ( ( ( in @ ( sK8_C @ B @ A ) @ ( sK9_SY185 @ B @ A ) )
                & ( in @ ( sK9_SY185 @ B @ A ) @ A ) )
              | ( in @ ( sK8_C @ B @ A ) @ B ) ) )
          | ( B
            = ( union @ A ) ) )
      & ! [A: $i,B: $i] :
          ( ( B
           != ( union @ A ) )
          | ( ! [C: $i] :
                ( ! [D: $i] :
                    ( ~ ( in @ C @ D )
                    | ~ ( in @ D @ A ) )
                | ( in @ C @ B ) )
            & ! [C: $i] :
                ( ~ ( in @ C @ B )
                | ( ( in @ C @ ( sK7_D @ C @ B @ A ) )
                  & ( in @ ( sK7_D @ C @ B @ A ) @ A ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[206]) ).

thf(306,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK6_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ B )
                  | ~ ( in @ ( sK6_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK6_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ C ) )
                & ( ~ ( in @ ( sK6_D @ C @ B @ A ) @ B )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ C ) ) )
              | ( C
                = ( set_difference @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( set_difference @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ A )
                    | ( in @ D @ B )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ A ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ~ ( in @ D @ B ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[205]) ).

thf(307,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ordered_pair @ A @ B )
          = ( unordered_pair @ ( unordered_pair @ A @ B ) @ ( singleton @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[124]) ).

thf(308,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_intersection2 @ A @ B )
           != empty_set )
          | ( disjoint @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( ( set_intersection2 @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[204]) ).

thf(309,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
          | ~ ( subset @ A @ B )
          | ( proper_subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ A @ B )
          | ( A != B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ A @ B )
          | ( subset @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[203]) ).

thf(310,plain,
    $true = $true,
    inference(copy,[status(thm)],[121]) ).

thf(311,plain,
    $true = $true,
    inference(copy,[status(thm)],[120]) ).

thf(312,plain,
    $true = $true,
    inference(copy,[status(thm)],[119]) ).

thf(313,plain,
    $true = $true,
    inference(copy,[status(thm)],[118]) ).

thf(314,plain,
    $true = $true,
    inference(copy,[status(thm)],[117]) ).

thf(315,plain,
    $true = $true,
    inference(copy,[status(thm)],[116]) ).

thf(316,plain,
    $true = $true,
    inference(copy,[status(thm)],[115]) ).

thf(317,plain,
    $true = $true,
    inference(copy,[status(thm)],[114]) ).

thf(318,plain,
    $true = $true,
    inference(copy,[status(thm)],[113]) ).

thf(319,plain,
    $true = $true,
    inference(copy,[status(thm)],[112]) ).

thf(320,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(copy,[status(thm)],[111]) ).

thf(321,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( empty @ ( ordered_pair @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[110]) ).

thf(322,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[202]) ).

thf(323,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[201]) ).

thf(324,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[200]) ).

thf(325,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ A )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[199]) ).

thf(326,plain,
    ( ( ! [A: $i] :
          ~ ( proper_subset @ A @ A ) )
    = $true ),
    inference(copy,[status(thm)],[198]) ).

thf(327,plain,
    ( ( empty @ sK5_A )
    = $true ),
    inference(copy,[status(thm)],[197]) ).

thf(328,plain,
    ( ( ~ ( empty @ sK4_A ) )
    = $true ),
    inference(copy,[status(thm)],[196]) ).

thf(329,plain,
    ( ( ! [A: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(copy,[status(thm)],[195]) ).

thf(330,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( disjoint @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[194]) ).

thf(331,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[100]) ).

thf(332,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ empty_set )
          = empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[99]) ).

thf(333,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ~ ( in @ ( sK3_C @ B @ A ) @ A )
              | ~ ( in @ ( sK3_C @ B @ A ) @ B ) )
            & ( ( in @ ( sK3_C @ B @ A ) @ A )
              | ( in @ ( sK3_C @ B @ A ) @ B ) ) )
          | ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[193]) ).

thf(334,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ A @ empty_set )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[97]) ).

thf(335,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ empty_set @ A )
          = empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[96]) ).

thf(336,plain,
    ( ( ! [A: $i] :
          ( ~ ( empty @ A )
          | ( A = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[192]) ).

thf(337,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ B )
          | ~ ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[191]) ).

thf(338,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
          | ~ ( empty @ A )
          | ~ ( empty @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[190]) ).

thf(339,plain,
    ( ( ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) )
      & ( sK1_A != empty_set )
      & ( sK1_A
       != ( singleton @ sK2_SY183 ) ) )
    = $true ),
    inference(copy,[status(thm)],[188]) ).

thf(340,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( ( set_difference @ SX0 @ SX1 )
                 != SX0 )
                | ( disjoint @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( disjoint @ SX0 @ SX1 )
                | ( ( set_difference @ SX0 @ SX1 )
                  = SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[287]) ).

thf(341,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( ( set_difference @ SX0 @ SX1 )
                 != empty_set )
                | ( subset @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ SX1 )
                | ( ( set_difference @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[255]) ).

thf(342,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ( ( sK18_D @ SX2 @ SX1 @ SX0 )
                                 != SX0 ) )
                            | ~ ( ~ ( in @ ( sK18_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ( ( sK18_D @ SX2 @ SX1 @ SX0 )
                                 != SX1 ) ) )
                      | ~ ( ( in @ ( sK18_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                          | ( ( sK18_D @ SX2 @ SX1 @ SX0 )
                            = SX0 )
                          | ( ( sK18_D @ SX2 @ SX1 @ SX0 )
                            = SX1 ) ) )
                  | ( SX2
                    = ( unordered_pair @ SX0 @ SX1 ) ) )
            | ~ ! [SX1: $i,SX2: $i] :
                  ( ( SX2
                   != ( unordered_pair @ SX0 @ SX1 ) )
                  | ~ ( ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SX2 )
                            | ( SX3 = SX0 )
                            | ( SX3 = SX1 ) )
                      | ~ ~ ( ~ ! [SX3: $i] :
                                  ( ( SX3 != SX0 )
                                  | ( in @ SX3 @ SX2 ) )
                            | ~ ! [SX3: $i] :
                                  ( ( SX3 != SX1 )
                                  | ( in @ SX3 @ SX2 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[300]) ).

thf(343,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                          | ~ ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                          | ~ ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                                | ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                            | ~ ( ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                                | ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) ) ) )
                  | ( SX2
                    = ( set_intersection2 @ SX0 @ SX1 ) ) )
            | ~ ! [SX1: $i,SX2: $i] :
                  ( ( SX2
                   != ( set_intersection2 @ SX0 @ SX1 ) )
                  | ~ ( ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SX0 )
                            | ~ ( in @ SX3 @ SX1 )
                            | ( in @ SX3 @ SX2 ) )
                      | ~ ~ ( ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX2 )
                                  | ( in @ SX3 @ SX0 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX2 )
                                  | ( in @ SX3 @ SX1 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[304]) ).

thf(344,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                        | ~ ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) )
                    | ~ ( ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                        | ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) ) )
                | ( SX1
                  = ( powerset @ SX0 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX1
                 != ( powerset @ SX0 ) )
                | ~ ( ~ ! [SX2: $i] :
                          ( ~ ( in @ SX2 @ SX1 )
                          | ( subset @ SX2 @ SX0 ) )
                    | ~ ! [SX2: $i] :
                          ( ~ ( subset @ SX2 @ SX0 )
                          | ( in @ SX2 @ SX1 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[299]) ).

thf(345,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( in @ SX0 @ SX1 )
                | ( subset @ ( singleton @ SX0 ) @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
                | ( in @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[254]) ).

thf(346,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( SX0 = SX1 )
                | ~ ( subset @ SX0 @ SX1 )
                | ( proper_subset @ SX0 @ SX1 ) )
          | ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                      ( ~ ( proper_subset @ SX0 @ SX1 )
                      | ( SX0 != SX1 ) )
                | ~ ! [SX0: $i,SX1: $i] :
                      ( ~ ( proper_subset @ SX0 @ SX1 )
                      | ( subset @ SX0 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[309]) ).

thf(347,plain,
    ( ( ~ ( ~ ! [SX0: $i] :
                ( ( in @ ( sK20_B @ SX0 ) @ SX0 )
                | ( SX0 = empty_set ) )
          | ~ ! [SX0: $i] :
                ( ( SX0 != empty_set )
                | ! [SX1: $i] :
                    ~ ( in @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[298]) ).

thf(348,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( disjoint @ SX0 @ SX1 )
                | ( in @ ( sK22_C @ SX1 @ SX0 ) @ ( set_intersection2 @ SX0 @ SX1 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ! [SX2: $i] :
                    ~ ( in @ SX2 @ ( set_intersection2 @ SX0 @ SX1 ) )
                | ~ ( disjoint @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[281]) ).

thf(349,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( in @ SX0 @ SX2 )
                  | ~ ( in @ SX1 @ SX2 )
                  | ( subset @ ( unordered_pair @ SX0 @ SX1 ) @ SX2 ) )
            | ~ ~ ( ~ ! [SX1: $i,SX2: $i] :
                        ( ~ ( subset @ ( unordered_pair @ SX0 @ SX1 ) @ SX2 )
                        | ( in @ SX0 @ SX2 ) )
                  | ~ ! [SX1: $i,SX2: $i] :
                        ( ~ ( subset @ ( unordered_pair @ SX0 @ SX1 ) @ SX2 )
                        | ( in @ SX1 @ SX2 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[274]) ).

thf(350,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ! [SX2: $i,SX3: $i] :
                  ( ~ ( in @ SX0 @ SX2 )
                  | ~ ( in @ SX1 @ SX3 )
                  | ( in @ ( ordered_pair @ SX0 @ SX1 ) @ ( cartesian_product2 @ SX2 @ SX3 ) ) )
            | ~ ~ ( ~ ! [SX2: $i] :
                        ( ! [SX3: $i] :
                            ~ ( in @ ( ordered_pair @ SX0 @ SX1 ) @ ( cartesian_product2 @ SX2 @ SX3 ) )
                        | ( in @ SX0 @ SX2 ) )
                  | ~ ! [SX2: $i,SX3: $i] :
                        ( ~ ( in @ ( ordered_pair @ SX0 @ SX1 ) @ ( cartesian_product2 @ SX2 @ SX3 ) )
                        | ( in @ SX1 @ SX3 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[259]) ).

thf(351,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ SX1 )
                | ~ ( subset @ SX1 @ SX0 )
                | ( SX0 = SX1 ) )
          | ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                      ( ( SX0 != SX1 )
                      | ( subset @ SX0 @ SX1 ) )
                | ~ ! [SX0: $i,SX1: $i] :
                      ( ( SX0 != SX1 )
                      | ( subset @ SX1 @ SX0 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[296]) ).

thf(352,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                          | ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                          | ~ ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                                | ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                            | ~ ( ~ ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                                | ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) ) ) )
                  | ( SX2
                    = ( set_difference @ SX0 @ SX1 ) ) )
            | ~ ! [SX1: $i,SX2: $i] :
                  ( ( SX2
                   != ( set_difference @ SX0 @ SX1 ) )
                  | ~ ( ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SX0 )
                            | ( in @ SX3 @ SX1 )
                            | ( in @ SX3 @ SX2 ) )
                      | ~ ~ ( ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX2 )
                                  | ( in @ SX3 @ SX0 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX2 )
                                  | ~ ( in @ SX3 @ SX1 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[306]) ).

thf(353,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ~ ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) )
                            | ~ ( ~ ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ~ ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX1 ) ) )
                      | ~ ( ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                          | ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                          | ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX1 ) ) )
                  | ( SX2
                    = ( set_union2 @ SX0 @ SX1 ) ) )
            | ~ ! [SX1: $i,SX2: $i] :
                  ( ( SX2
                   != ( set_union2 @ SX0 @ SX1 ) )
                  | ~ ( ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SX2 )
                            | ( in @ SX3 @ SX0 )
                            | ( in @ SX3 @ SX1 ) )
                      | ~ ~ ( ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX0 )
                                  | ( in @ SX3 @ SX2 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX1 )
                                  | ( in @ SX3 @ SX2 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[301]) ).

thf(354,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( ( set_intersection2 @ SX0 @ SX1 )
                 != empty_set )
                | ( disjoint @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( disjoint @ SX0 @ SX1 )
                | ( ( set_intersection2 @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[308]) ).

thf(355,plain,
    ( ( ~ ( ~ ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) )
          | ~ ~ ( ~ ( ( sK1_A != empty_set ) )
                | ~ ( ( sK1_A
                     != ( singleton @ sK2_SY183 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[339]) ).

thf(356,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
                | ( SX0 = empty_set )
                | ( SX0
                  = ( singleton @ SX1 ) ) )
          | ~ ~ ( ~ ! [SX0: $i] :
                      ( ( SX0 != empty_set )
                      | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) )
                | ~ ! [SX0: $i,SX1: $i] :
                      ( ( SX0
                       != ( singleton @ SX1 ) )
                      | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[257]) ).

thf(357,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( in @ SX0 @ SX1 )
                | ( subset @ ( singleton @ SX0 ) @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
                | ( in @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[273]) ).

thf(358,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX0 )
                    | ~ ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX1 ) )
                | ( subset @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ SX1 )
                | ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX0 )
                    | ( in @ SX2 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[303]) ).

thf(359,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ! [SX2: $i] :
                  ( ! [SX3: $i] :
                      ( ( ordered_pair @ SX0 @ SX1 )
                     != ( ordered_pair @ SX2 @ SX3 ) )
                  | ( SX0 = SX2 ) )
            | ~ ! [SX2: $i,SX3: $i] :
                  ( ( ( ordered_pair @ SX0 @ SX1 )
                   != ( ordered_pair @ SX2 @ SX3 ) )
                  | ( SX1 = SX3 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[270]) ).

thf(360,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ~ ( in @ ( sK3_C @ SX1 @ SX0 ) @ SX0 )
                  | ~ ( in @ ( sK3_C @ SX1 @ SX0 ) @ SX1 ) )
              | ~ ( ( in @ ( sK3_C @ SX1 @ SX0 ) @ SX0 )
                  | ( in @ ( sK3_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ( SX0 = SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[333]) ).

thf(361,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( disjoint @ SX0 @ SX1 )
                | ~ ( ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX0 )
                    | ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX0 )
                    | ~ ( in @ SX2 @ SX1 ) )
                | ~ ( disjoint @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[276]) ).

thf(362,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( ( ( sK21_C @ SX1 @ SX0 )
                         != SX0 )
                        | ~ ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) )
                    | ~ ( ( ( sK21_C @ SX1 @ SX0 )
                          = SX0 )
                        | ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) ) )
                | ( SX1
                  = ( singleton @ SX0 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX1
                 != ( singleton @ SX0 ) )
                | ~ ( ~ ! [SX2: $i] :
                          ( ( SX2 != SX0 )
                          | ( in @ SX2 @ SX1 ) )
                    | ~ ! [SX2: $i] :
                          ( ~ ( in @ SX2 @ SX1 )
                          | ( SX2 = SX0 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[297]) ).

thf(363,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( ! [SX2: $i] :
                            ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX2 )
                            | ~ ( in @ SX2 @ SX0 ) )
                        | ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) )
                    | ~ ( ~ ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ ( sK9_SY185 @ SX1 @ SX0 ) )
                            | ~ ( in @ ( sK9_SY185 @ SX1 @ SX0 ) @ SX0 ) )
                        | ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) ) )
                | ( SX1
                  = ( union @ SX0 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX1
                 != ( union @ SX0 ) )
                | ~ ( ~ ! [SX2: $i] :
                          ( ! [SX3: $i] :
                              ( ~ ( in @ SX2 @ SX3 )
                              | ~ ( in @ SX3 @ SX0 ) )
                          | ( in @ SX2 @ SX1 ) )
                    | ~ ! [SX2: $i] :
                          ( ~ ( in @ SX2 @ SX1 )
                          | ~ ( ~ ( in @ SX2 @ ( sK7_D @ SX2 @ SX1 @ SX0 ) )
                              | ~ ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[305]) ).

thf(364,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( ( set_difference @ SX0 @ SX1 )
                 != empty_set )
                | ( subset @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ SX1 )
                | ( ( set_difference @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[272]) ).

thf(365,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ( ! [SX3: $i,SX4: $i] :
                              ( ~ ( in @ SX3 @ SX0 )
                              | ~ ( in @ SX4 @ SX1 )
                              | ( ( sK14_D @ SX2 @ SX1 @ SX0 )
                               != ( ordered_pair @ SX3 @ SX4 ) ) )
                          | ~ ( in @ ( sK14_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                      | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SX2 @ SX1 @ SX0 ) @ SX0 )
                                    | ~ ( in @ ( sK16_SY191 @ SX2 @ SX1 @ SX0 ) @ SX1 ) )
                              | ( ( sK14_D @ SX2 @ SX1 @ SX0 )
                               != ( ordered_pair @ ( sK15_SY189 @ SX2 @ SX1 @ SX0 ) @ ( sK16_SY191 @ SX2 @ SX1 @ SX0 ) ) ) )
                          | ( in @ ( sK14_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) ) )
                  | ( SX2
                    = ( cartesian_product2 @ SX0 @ SX1 ) ) )
            | ~ ! [SX1: $i,SX2: $i] :
                  ( ( SX2
                   != ( cartesian_product2 @ SX0 @ SX1 ) )
                  | ~ ( ~ ! [SX3: $i] :
                            ( ! [SX4: $i,SX5: $i] :
                                ( ~ ( in @ SX4 @ SX0 )
                                | ~ ( in @ SX5 @ SX1 )
                                | ( SX3
                                 != ( ordered_pair @ SX4 @ SX5 ) ) )
                            | ( in @ SX3 @ SX2 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SX2 )
                            | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SX3 @ SX2 @ SX1 @ SX0 ) @ SX0 )
                                      | ~ ( in @ ( sK13_SY186 @ SX3 @ SX2 @ SX1 @ SX0 ) @ SX1 ) )
                                | ( SX3
                                 != ( ordered_pair @ ( sK12_E @ SX3 @ SX2 @ SX1 @ SX0 ) @ ( sK13_SY186 @ SX3 @ SX2 @ SX1 @ SX0 ) ) ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[302]) ).

thf(366,plain,
    ! [SV1: $i] :
      ( ( ( ( singleton @ SV1 )
         != empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[250]) ).

thf(367,plain,
    ! [SV2: $i] :
      ( ( ! [SY192: $i] :
            ( ~ ( in @ SV2 @ SY192 )
            | ( ( set_union2 @ ( singleton @ SV2 ) @ SY192 )
              = SY192 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[251]) ).

thf(368,plain,
    ! [SV3: $i] :
      ( ( ! [SY193: $i] :
            ( ~ ( disjoint @ ( singleton @ SV3 ) @ SY193 )
            | ~ ( in @ SV3 @ SY193 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[252]) ).

thf(369,plain,
    ! [SV4: $i] :
      ( ( ! [SY194: $i] :
            ( ( in @ SV4 @ SY194 )
            | ( disjoint @ ( singleton @ SV4 ) @ SY194 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[253]) ).

thf(370,plain,
    ! [SV5: $i] :
      ( ( ! [SY195: $i] :
            ( ~ ( subset @ SV5 @ SY195 )
            | ! [SY196: $i] :
                ( ( in @ SY196 @ SV5 )
                | ( subset @ SV5 @ ( set_difference @ SY195 @ ( singleton @ SY196 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[256]) ).

thf(371,plain,
    ! [SV6: $i] :
      ( ( ! [SY197: $i] :
            ( ~ ( in @ SV6 @ SY197 )
            | ( subset @ SV6 @ ( union @ SY197 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[258]) ).

thf(372,plain,
    ! [SV7: $i] :
      ( ( ! [SY198: $i,SY199: $i,SY200: $i] :
            ( ( SV7 = SY200 )
            | ( SV7 = SY199 )
            | ( ( unordered_pair @ SV7 @ SY198 )
             != ( unordered_pair @ SY199 @ SY200 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[260]) ).

thf(373,plain,
    ! [SV8: $i] :
      ( ( ! [SY201: $i] :
            ( ~ ( subset @ SV8 @ SY201 )
            | ( ( set_union2 @ SV8 @ SY201 )
              = SY201 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[261]) ).

thf(374,plain,
    ! [SV9: $i] :
      ( ( ! [SY202: $i] : ( subset @ ( set_intersection2 @ SV9 @ SY202 ) @ SV9 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[262]) ).

thf(375,plain,
    ! [SV10: $i] :
      ( ( ! [SY203: $i,SY204: $i] :
            ( ~ ( subset @ SV10 @ SY203 )
            | ~ ( subset @ SV10 @ SY204 )
            | ( subset @ SV10 @ ( set_intersection2 @ SY203 @ SY204 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[263]) ).

thf(376,plain,
    ! [SV11: $i] :
      ( ( ! [SY205: $i,SY206: $i] :
            ( ~ ( subset @ SV11 @ SY205 )
            | ~ ( subset @ SY205 @ SY206 )
            | ( subset @ SV11 @ SY206 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[264]) ).

thf(377,plain,
    ! [SV12: $i] :
      ( ( ! [SY207: $i] :
            ( ~ ( subset @ SV12 @ SY207 )
            | ! [SY208: $i] : ( subset @ ( set_intersection2 @ SV12 @ SY208 ) @ ( set_intersection2 @ SY207 @ SY208 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[266]) ).

thf(378,plain,
    ! [SV13: $i] :
      ( ( ! [SY209: $i] :
            ( ~ ( subset @ SV13 @ SY209 )
            | ( ( set_intersection2 @ SV13 @ SY209 )
              = SV13 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[267]) ).

thf(379,plain,
    ! [SV14: $i] :
      ( ( subset @ empty_set @ SV14 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[268]) ).

thf(380,plain,
    ! [SV15: $i] :
      ( ( ! [SY210: $i] :
            ( ~ ( subset @ SV15 @ SY210 )
            | ! [SY211: $i] : ( subset @ ( set_difference @ SV15 @ SY211 ) @ ( set_difference @ SY210 @ SY211 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[269]) ).

thf(381,plain,
    ! [SV16: $i] :
      ( ( ! [SY212: $i] : ( subset @ ( set_difference @ SV16 @ SY212 ) @ SV16 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[271]) ).

thf(382,plain,
    ! [SV17: $i] :
      ( ( ! [SY213: $i] :
            ( ( set_union2 @ SV17 @ ( set_difference @ SY213 @ SV17 ) )
            = ( set_union2 @ SV17 @ SY213 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[275]) ).

thf(383,plain,
    ! [SV18: $i] :
      ( ( ~ ( subset @ SV18 @ empty_set )
        | ( SV18 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[277]) ).

thf(384,plain,
    ! [SV19: $i] :
      ( ( ! [SY214: $i] :
            ( ( set_difference @ ( set_union2 @ SV19 @ SY214 ) @ SY214 )
            = ( set_difference @ SV19 @ SY214 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[278]) ).

thf(385,plain,
    ! [SV20: $i] :
      ( ( ! [SY215: $i] :
            ( ~ ( subset @ SV20 @ SY215 )
            | ( SY215
              = ( set_union2 @ SV20 @ ( set_difference @ SY215 @ SV20 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[279]) ).

thf(386,plain,
    ! [SV21: $i] :
      ( ( ! [SY216: $i] :
            ( ( set_difference @ SV21 @ ( set_difference @ SV21 @ SY216 ) )
            = ( set_intersection2 @ SV21 @ SY216 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[280]) ).

thf(387,plain,
    ! [SV22: $i] :
      ( ( ! [SY217: $i] :
            ( ~ ( proper_subset @ SY217 @ SV22 )
            | ~ ( subset @ SV22 @ SY217 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[282]) ).

thf(388,plain,
    ! [SV23: $i] :
      ( ( ! [SY218: $i,SY219: $i] :
            ( ~ ( disjoint @ SY218 @ SY219 )
            | ~ ( subset @ SV23 @ SY218 )
            | ( disjoint @ SV23 @ SY219 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[283]) ).

thf(389,plain,
    ! [SV24: $i] :
      ( ( ( unordered_pair @ SV24 @ SV24 )
        = ( singleton @ SV24 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[284]) ).

thf(390,plain,
    ! [SV25: $i] :
      ( ( ! [SY220: $i] :
            ( ~ ( subset @ ( singleton @ SV25 ) @ ( singleton @ SY220 ) )
            | ( SV25 = SY220 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[285]) ).

thf(391,plain,
    ! [SV26: $i] :
      ( ( ! [SY221: $i] : ( subset @ SV26 @ ( set_union2 @ SV26 @ SY221 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[286]) ).

thf(392,plain,
    ! [SV27: $i] :
      ( ( ! [SY222: $i,SY223: $i] :
            ( ~ ( subset @ SV27 @ SY222 )
            | ~ ( subset @ SY223 @ SY222 )
            | ( subset @ ( set_union2 @ SV27 @ SY223 ) @ SY222 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[288]) ).

thf(393,plain,
    ! [SV28: $i] :
      ( ( ! [SY224: $i] :
            ( ! [SY225: $i] :
                ( ( singleton @ SV28 )
               != ( unordered_pair @ SY224 @ SY225 ) )
            | ( SV28 = SY224 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[289]) ).

thf(394,plain,
    ! [SV29: $i] :
      ( ( ! [SY226: $i,SY227: $i] :
            ( ( ( singleton @ SV29 )
             != ( unordered_pair @ SY226 @ SY227 ) )
            | ( SY226 = SY227 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[290]) ).

thf(395,plain,
    ! [SV30: $i] :
      ( ( ! [SY228: $i] :
            ( ~ ( in @ SV30 @ SY228 )
            | ~ ( in @ SY228 @ SV30 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[291]) ).

thf(396,plain,
    ! [SV31: $i] :
      ( ( ! [SY229: $i] :
            ( ~ ( proper_subset @ SV31 @ SY229 )
            | ~ ( proper_subset @ SY229 @ SV31 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[292]) ).

thf(397,plain,
    ! [SV32: $i] :
      ( ( ! [SY230: $i] :
            ( ( unordered_pair @ SV32 @ SY230 )
            = ( unordered_pair @ SY230 @ SV32 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[293]) ).

thf(398,plain,
    ! [SV33: $i] :
      ( ( ! [SY231: $i] :
            ( ( set_union2 @ SV33 @ SY231 )
            = ( set_union2 @ SY231 @ SV33 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[294]) ).

thf(399,plain,
    ! [SV34: $i] :
      ( ( ! [SY232: $i] :
            ( ( set_intersection2 @ SV34 @ SY232 )
            = ( set_intersection2 @ SY232 @ SV34 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[295]) ).

thf(400,plain,
    ! [SV35: $i] :
      ( ( ! [SY233: $i] :
            ( ( ordered_pair @ SV35 @ SY233 )
            = ( unordered_pair @ ( unordered_pair @ SV35 @ SY233 ) @ ( singleton @ SV35 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[307]) ).

thf(401,plain,
    ! [SV36: $i] :
      ( ( ! [SY234: $i] :
            ~ ( empty @ ( ordered_pair @ SV36 @ SY234 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[321]) ).

thf(402,plain,
    ! [SV37: $i] :
      ( ( ( empty @ SV37 )
        | ! [SY235: $i] :
            ~ ( empty @ ( set_union2 @ SV37 @ SY235 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[322]) ).

thf(403,plain,
    ! [SV38: $i] :
      ( ( ( empty @ SV38 )
        | ! [SY236: $i] :
            ~ ( empty @ ( set_union2 @ SY236 @ SV38 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[323]) ).

thf(404,plain,
    ! [SV39: $i] :
      ( ( ( set_union2 @ SV39 @ SV39 )
        = SV39 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[324]) ).

thf(405,plain,
    ! [SV40: $i] :
      ( ( ( set_intersection2 @ SV40 @ SV40 )
        = SV40 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[325]) ).

thf(406,plain,
    ! [SV41: $i] :
      ( ( ~ ( proper_subset @ SV41 @ SV41 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[326]) ).

thf(407,plain,
    ( ( empty @ sK4_A )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[328]) ).

thf(408,plain,
    ! [SV42: $i] :
      ( ( subset @ SV42 @ SV42 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[329]) ).

thf(409,plain,
    ! [SV43: $i] :
      ( ( ! [SY237: $i] :
            ( ~ ( disjoint @ SV43 @ SY237 )
            | ( disjoint @ SY237 @ SV43 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[330]) ).

thf(410,plain,
    ! [SV44: $i] :
      ( ( ( set_union2 @ SV44 @ empty_set )
        = SV44 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[331]) ).

thf(411,plain,
    ! [SV45: $i] :
      ( ( ( set_intersection2 @ SV45 @ empty_set )
        = empty_set )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[332]) ).

thf(412,plain,
    ! [SV46: $i] :
      ( ( ( set_difference @ SV46 @ empty_set )
        = SV46 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[334]) ).

thf(413,plain,
    ! [SV47: $i] :
      ( ( ( set_difference @ empty_set @ SV47 )
        = empty_set )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[335]) ).

thf(414,plain,
    ! [SV48: $i] :
      ( ( ~ ( empty @ SV48 )
        | ( SV48 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[336]) ).

thf(415,plain,
    ! [SV49: $i] :
      ( ( ! [SY238: $i] :
            ( ~ ( empty @ SY238 )
            | ~ ( in @ SV49 @ SY238 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[337]) ).

thf(416,plain,
    ! [SV50: $i] :
      ( ( ! [SY239: $i] :
            ( ( SV50 = SY239 )
            | ~ ( empty @ SV50 )
            | ~ ( empty @ SY239 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[338]) ).

thf(417,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != SX0 )
            | ( disjoint @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( disjoint @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = SX0 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[340]) ).

thf(418,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != empty_set )
            | ( subset @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[341]) ).

thf(419,plain,
    ! [SV51: $i] :
      ( ( ~ ( ~ ! [SY240: $i,SY241: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                                | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                                 != SV51 ) )
                            | ~ ( ~ ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                                | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                                 != SY240 ) ) )
                      | ~ ( ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                          | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                            = SV51 )
                          | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                            = SY240 ) ) )
                  | ( SY241
                    = ( unordered_pair @ SV51 @ SY240 ) ) )
            | ~ ! [SY242: $i,SY243: $i] :
                  ( ( SY243
                   != ( unordered_pair @ SV51 @ SY242 ) )
                  | ~ ( ~ ! [SY244: $i] :
                            ( ~ ( in @ SY244 @ SY243 )
                            | ( SY244 = SV51 )
                            | ( SY244 = SY242 ) )
                      | ~ ~ ( ~ ! [SY245: $i] :
                                  ( ( SY245 != SV51 )
                                  | ( in @ SY245 @ SY243 ) )
                            | ~ ! [SX3: $i] :
                                  ( ( SX3 != SY242 )
                                  | ( in @ SX3 @ SY243 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[342]) ).

thf(420,plain,
    ! [SV52: $i] :
      ( ( ~ ( ~ ! [SY247: $i,SY248: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SV52 )
                          | ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY247 )
                          | ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SV52 )
                                | ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) )
                            | ~ ( ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY247 )
                                | ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) ) ) )
                  | ( SY248
                    = ( set_intersection2 @ SV52 @ SY247 ) ) )
            | ~ ! [SY249: $i,SY250: $i] :
                  ( ( SY250
                   != ( set_intersection2 @ SV52 @ SY249 ) )
                  | ~ ( ~ ! [SY251: $i] :
                            ( ~ ( in @ SY251 @ SV52 )
                            | ~ ( in @ SY251 @ SY249 )
                            | ( in @ SY251 @ SY250 ) )
                      | ~ ~ ( ~ ! [SY252: $i] :
                                  ( ~ ( in @ SY252 @ SY250 )
                                  | ( in @ SY252 @ SV52 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SY250 )
                                  | ( in @ SX3 @ SY249 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[343]) ).

thf(421,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                    | ~ ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) )
                | ~ ( ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                    | ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) ) )
            | ( SX1
              = ( powerset @ SX0 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( powerset @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ( subset @ SX2 @ SX0 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( subset @ SX2 @ SX0 )
                      | ( in @ SX2 @ SX1 ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[344]) ).

thf(422,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( in @ SX0 @ SX1 )
            | ( subset @ ( singleton @ SX0 ) @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
            | ( in @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[345]) ).

thf(423,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 = SX1 )
            | ~ ( subset @ SX0 @ SX1 )
            | ( proper_subset @ SX0 @ SX1 ) )
      | ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                  ( ~ ( proper_subset @ SX0 @ SX1 )
                  | ( SX0 != SX1 ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ~ ( proper_subset @ SX0 @ SX1 )
                  | ( subset @ SX0 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[346]) ).

thf(424,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( in @ ( sK20_B @ SX0 ) @ SX0 )
            | ( SX0 = empty_set ) )
      | ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] :
                ~ ( in @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[347]) ).

thf(425,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ( in @ ( sK22_C @ SX1 @ SX0 ) @ ( set_intersection2 @ SX0 @ SX1 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ! [SX2: $i] :
                ~ ( in @ SX2 @ ( set_intersection2 @ SX0 @ SX1 ) )
            | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[348]) ).

thf(426,plain,
    ! [SV53: $i] :
      ( ( ~ ( ~ ! [SY254: $i,SY255: $i] :
                  ( ~ ( in @ SV53 @ SY255 )
                  | ~ ( in @ SY254 @ SY255 )
                  | ( subset @ ( unordered_pair @ SV53 @ SY254 ) @ SY255 ) )
            | ~ ~ ( ~ ! [SY256: $i,SY257: $i] :
                        ( ~ ( subset @ ( unordered_pair @ SV53 @ SY256 ) @ SY257 )
                        | ( in @ SV53 @ SY257 ) )
                  | ~ ! [SY258: $i,SY259: $i] :
                        ( ~ ( subset @ ( unordered_pair @ SV53 @ SY258 ) @ SY259 )
                        | ( in @ SY258 @ SY259 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[349]) ).

thf(427,plain,
    ! [SV54: $i] :
      ( ( ! [SY260: $i] :
            ~ ( ~ ! [SY261: $i,SY262: $i] :
                    ( ~ ( in @ SV54 @ SY261 )
                    | ~ ( in @ SY260 @ SY262 )
                    | ( in @ ( ordered_pair @ SV54 @ SY260 ) @ ( cartesian_product2 @ SY261 @ SY262 ) ) )
              | ~ ~ ( ~ ! [SY263: $i] :
                          ( ! [SY264: $i] :
                              ~ ( in @ ( ordered_pair @ SV54 @ SY260 ) @ ( cartesian_product2 @ SY263 @ SY264 ) )
                          | ( in @ SV54 @ SY263 ) )
                    | ~ ! [SY265: $i,SY266: $i] :
                          ( ~ ( in @ ( ordered_pair @ SV54 @ SY260 ) @ ( cartesian_product2 @ SY265 @ SY266 ) )
                          | ( in @ SY260 @ SY266 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[350]) ).

thf(428,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ~ ( subset @ SX1 @ SX0 )
            | ( SX0 = SX1 ) )
      | ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0 != SX1 )
                  | ( subset @ SX0 @ SX1 ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0 != SX1 )
                  | ( subset @ SX1 @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[351]) ).

thf(429,plain,
    ! [SV55: $i] :
      ( ( ~ ( ~ ! [SY267: $i,SY268: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SV55 )
                          | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY267 )
                          | ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SV55 )
                                | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) )
                            | ~ ( ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY267 )
                                | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) ) ) )
                  | ( SY268
                    = ( set_difference @ SV55 @ SY267 ) ) )
            | ~ ! [SY269: $i,SY270: $i] :
                  ( ( SY270
                   != ( set_difference @ SV55 @ SY269 ) )
                  | ~ ( ~ ! [SY271: $i] :
                            ( ~ ( in @ SY271 @ SV55 )
                            | ( in @ SY271 @ SY269 )
                            | ( in @ SY271 @ SY270 ) )
                      | ~ ~ ( ~ ! [SY272: $i] :
                                  ( ~ ( in @ SY272 @ SY270 )
                                  | ( in @ SY272 @ SV55 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SY270 )
                                  | ~ ( in @ SX3 @ SY269 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[352]) ).

thf(430,plain,
    ! [SV56: $i] :
      ( ( ~ ( ~ ! [SY274: $i,SY275: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                                | ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SV56 ) )
                            | ~ ( ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                                | ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY274 ) ) )
                      | ~ ( ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                          | ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SV56 )
                          | ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY274 ) ) )
                  | ( SY275
                    = ( set_union2 @ SV56 @ SY274 ) ) )
            | ~ ! [SY276: $i,SY277: $i] :
                  ( ( SY277
                   != ( set_union2 @ SV56 @ SY276 ) )
                  | ~ ( ~ ! [SY278: $i] :
                            ( ~ ( in @ SY278 @ SY277 )
                            | ( in @ SY278 @ SV56 )
                            | ( in @ SY278 @ SY276 ) )
                      | ~ ~ ( ~ ! [SY279: $i] :
                                  ( ~ ( in @ SY279 @ SV56 )
                                  | ( in @ SY279 @ SY277 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SY276 )
                                  | ( in @ SX3 @ SY277 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[353]) ).

thf(431,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_intersection2 @ SX0 @ SX1 )
             != empty_set )
            | ( disjoint @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( disjoint @ SX0 @ SX1 )
            | ( ( set_intersection2 @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[354]) ).

thf(432,plain,
    ( ( ~ ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) )
      | ~ ~ ( ~ ( ( sK1_A != empty_set ) )
            | ~ ( ( sK1_A
                 != ( singleton @ sK2_SY183 ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[355]) ).

thf(433,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
            | ( SX0 = empty_set )
            | ( SX0
              = ( singleton @ SX1 ) ) )
      | ~ ~ ( ~ ! [SX0: $i] :
                  ( ( SX0 != empty_set )
                  | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0
                   != ( singleton @ SX1 ) )
                  | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[356]) ).

thf(434,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( in @ SX0 @ SX1 )
            | ( subset @ ( singleton @ SX0 ) @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
            | ( in @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[357]) ).

thf(435,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX1 ) )
            | ( subset @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ! [SX2: $i] :
                ( ~ ( in @ SX2 @ SX0 )
                | ( in @ SX2 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[358]) ).

thf(436,plain,
    ! [SV57: $i] :
      ( ( ! [SY281: $i] :
            ~ ( ~ ! [SY282: $i] :
                    ( ! [SY283: $i] :
                        ( ( ordered_pair @ SV57 @ SY281 )
                       != ( ordered_pair @ SY282 @ SY283 ) )
                    | ( SV57 = SY282 ) )
              | ~ ! [SY284: $i,SY285: $i] :
                    ( ( ( ordered_pair @ SV57 @ SY281 )
                     != ( ordered_pair @ SY284 @ SY285 ) )
                    | ( SY281 = SY285 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[359]) ).

thf(437,plain,
    ! [SV58: $i] :
      ( ( ! [SY286: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK3_C @ SY286 @ SV58 ) @ SV58 )
                    | ~ ( in @ ( sK3_C @ SY286 @ SV58 ) @ SY286 ) )
                | ~ ( ( in @ ( sK3_C @ SY286 @ SV58 ) @ SV58 )
                    | ( in @ ( sK3_C @ SY286 @ SV58 ) @ SY286 ) ) )
            | ( SV58 = SY286 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[360]) ).

thf(438,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ~ ( ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX1 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ! [SX2: $i] :
                ( ~ ( in @ SX2 @ SX0 )
                | ~ ( in @ SX2 @ SX1 ) )
            | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[361]) ).

thf(439,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ( ( sK21_C @ SX1 @ SX0 )
                     != SX0 )
                    | ~ ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ( ( sK21_C @ SX1 @ SX0 )
                      = SX0 )
                    | ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) ) )
            | ( SX1
              = ( singleton @ SX0 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( singleton @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ( SX2 != SX0 )
                      | ( in @ SX2 @ SX1 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ( SX2 = SX0 ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[362]) ).

thf(440,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ! [SX2: $i] :
                        ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX2 )
                        | ~ ( in @ SX2 @ SX0 ) )
                    | ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ~ ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ ( sK9_SY185 @ SX1 @ SX0 ) )
                        | ~ ( in @ ( sK9_SY185 @ SX1 @ SX0 ) @ SX0 ) )
                    | ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) ) )
            | ( SX1
              = ( union @ SX0 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( union @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ! [SX3: $i] :
                          ( ~ ( in @ SX2 @ SX3 )
                          | ~ ( in @ SX3 @ SX0 ) )
                      | ( in @ SX2 @ SX1 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ~ ( ~ ( in @ SX2 @ ( sK7_D @ SX2 @ SX1 @ SX0 ) )
                          | ~ ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[363]) ).

thf(441,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != empty_set )
            | ( subset @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[364]) ).

thf(442,plain,
    ! [SV59: $i] :
      ( ( ~ ( ~ ! [SY287: $i,SY288: $i] :
                  ( ~ ( ~ ( ! [SY289: $i,SY290: $i] :
                              ( ~ ( in @ SY289 @ SV59 )
                              | ~ ( in @ SY290 @ SY287 )
                              | ( ( sK14_D @ SY288 @ SY287 @ SV59 )
                               != ( ordered_pair @ SY289 @ SY290 ) ) )
                          | ~ ( in @ ( sK14_D @ SY288 @ SY287 @ SV59 ) @ SY288 ) )
                      | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SY288 @ SY287 @ SV59 ) @ SV59 )
                                    | ~ ( in @ ( sK16_SY191 @ SY288 @ SY287 @ SV59 ) @ SY287 ) )
                              | ( ( sK14_D @ SY288 @ SY287 @ SV59 )
                               != ( ordered_pair @ ( sK15_SY189 @ SY288 @ SY287 @ SV59 ) @ ( sK16_SY191 @ SY288 @ SY287 @ SV59 ) ) ) )
                          | ( in @ ( sK14_D @ SY288 @ SY287 @ SV59 ) @ SY288 ) ) )
                  | ( SY288
                    = ( cartesian_product2 @ SV59 @ SY287 ) ) )
            | ~ ! [SY291: $i,SY292: $i] :
                  ( ( SY292
                   != ( cartesian_product2 @ SV59 @ SY291 ) )
                  | ~ ( ~ ! [SY293: $i] :
                            ( ! [SY294: $i,SY295: $i] :
                                ( ~ ( in @ SY294 @ SV59 )
                                | ~ ( in @ SY295 @ SY291 )
                                | ( SY293
                                 != ( ordered_pair @ SY294 @ SY295 ) ) )
                            | ( in @ SY293 @ SY292 ) )
                      | ~ ! [SY296: $i] :
                            ( ~ ( in @ SY296 @ SY292 )
                            | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY296 @ SY292 @ SY291 @ SV59 ) @ SV59 )
                                      | ~ ( in @ ( sK13_SY186 @ SY296 @ SY292 @ SY291 @ SV59 ) @ SY291 ) )
                                | ( SY296
                                 != ( ordered_pair @ ( sK12_E @ SY296 @ SY292 @ SY291 @ SV59 ) @ ( sK13_SY186 @ SY296 @ SY292 @ SY291 @ SV59 ) ) ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[365]) ).

thf(443,plain,
    ! [SV1: $i] :
      ( ( ( singleton @ SV1 )
        = empty_set )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[366]) ).

thf(444,plain,
    ! [SV60: $i,SV2: $i] :
      ( ( ~ ( in @ SV2 @ SV60 )
        | ( ( set_union2 @ ( singleton @ SV2 ) @ SV60 )
          = SV60 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[367]) ).

thf(445,plain,
    ! [SV61: $i,SV3: $i] :
      ( ( ~ ( disjoint @ ( singleton @ SV3 ) @ SV61 )
        | ~ ( in @ SV3 @ SV61 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[368]) ).

thf(446,plain,
    ! [SV62: $i,SV4: $i] :
      ( ( ( in @ SV4 @ SV62 )
        | ( disjoint @ ( singleton @ SV4 ) @ SV62 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[369]) ).

thf(447,plain,
    ! [SV63: $i,SV5: $i] :
      ( ( ~ ( subset @ SV5 @ SV63 )
        | ! [SY297: $i] :
            ( ( in @ SY297 @ SV5 )
            | ( subset @ SV5 @ ( set_difference @ SV63 @ ( singleton @ SY297 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[370]) ).

thf(448,plain,
    ! [SV64: $i,SV6: $i] :
      ( ( ~ ( in @ SV6 @ SV64 )
        | ( subset @ SV6 @ ( union @ SV64 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[371]) ).

thf(449,plain,
    ! [SV65: $i,SV7: $i] :
      ( ( ! [SY298: $i,SY299: $i] :
            ( ( SV7 = SY299 )
            | ( SV7 = SY298 )
            | ( ( unordered_pair @ SV7 @ SV65 )
             != ( unordered_pair @ SY298 @ SY299 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[372]) ).

thf(450,plain,
    ! [SV66: $i,SV8: $i] :
      ( ( ~ ( subset @ SV8 @ SV66 )
        | ( ( set_union2 @ SV8 @ SV66 )
          = SV66 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[373]) ).

thf(451,plain,
    ! [SV67: $i,SV9: $i] :
      ( ( subset @ ( set_intersection2 @ SV9 @ SV67 ) @ SV9 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[374]) ).

thf(452,plain,
    ! [SV68: $i,SV10: $i] :
      ( ( ! [SY300: $i] :
            ( ~ ( subset @ SV10 @ SV68 )
            | ~ ( subset @ SV10 @ SY300 )
            | ( subset @ SV10 @ ( set_intersection2 @ SV68 @ SY300 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[375]) ).

thf(453,plain,
    ! [SV69: $i,SV11: $i] :
      ( ( ! [SY301: $i] :
            ( ~ ( subset @ SV11 @ SV69 )
            | ~ ( subset @ SV69 @ SY301 )
            | ( subset @ SV11 @ SY301 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[376]) ).

thf(454,plain,
    ! [SV70: $i,SV12: $i] :
      ( ( ~ ( subset @ SV12 @ SV70 )
        | ! [SY302: $i] : ( subset @ ( set_intersection2 @ SV12 @ SY302 ) @ ( set_intersection2 @ SV70 @ SY302 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[377]) ).

thf(455,plain,
    ! [SV71: $i,SV13: $i] :
      ( ( ~ ( subset @ SV13 @ SV71 )
        | ( ( set_intersection2 @ SV13 @ SV71 )
          = SV13 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[378]) ).

thf(456,plain,
    ! [SV72: $i,SV15: $i] :
      ( ( ~ ( subset @ SV15 @ SV72 )
        | ! [SY303: $i] : ( subset @ ( set_difference @ SV15 @ SY303 ) @ ( set_difference @ SV72 @ SY303 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[380]) ).

thf(457,plain,
    ! [SV73: $i,SV16: $i] :
      ( ( subset @ ( set_difference @ SV16 @ SV73 ) @ SV16 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[381]) ).

thf(458,plain,
    ! [SV74: $i,SV17: $i] :
      ( ( ( set_union2 @ SV17 @ ( set_difference @ SV74 @ SV17 ) )
        = ( set_union2 @ SV17 @ SV74 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[382]) ).

thf(459,plain,
    ! [SV18: $i] :
      ( ( ( ~ ( subset @ SV18 @ empty_set ) )
        = $true )
      | ( ( SV18 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[383]) ).

thf(460,plain,
    ! [SV75: $i,SV19: $i] :
      ( ( ( set_difference @ ( set_union2 @ SV19 @ SV75 ) @ SV75 )
        = ( set_difference @ SV19 @ SV75 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[384]) ).

thf(461,plain,
    ! [SV76: $i,SV20: $i] :
      ( ( ~ ( subset @ SV20 @ SV76 )
        | ( SV76
          = ( set_union2 @ SV20 @ ( set_difference @ SV76 @ SV20 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[385]) ).

thf(462,plain,
    ! [SV77: $i,SV21: $i] :
      ( ( ( set_difference @ SV21 @ ( set_difference @ SV21 @ SV77 ) )
        = ( set_intersection2 @ SV21 @ SV77 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[386]) ).

thf(463,plain,
    ! [SV22: $i,SV78: $i] :
      ( ( ~ ( proper_subset @ SV78 @ SV22 )
        | ~ ( subset @ SV22 @ SV78 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[387]) ).

thf(464,plain,
    ! [SV23: $i,SV79: $i] :
      ( ( ! [SY304: $i] :
            ( ~ ( disjoint @ SV79 @ SY304 )
            | ~ ( subset @ SV23 @ SV79 )
            | ( disjoint @ SV23 @ SY304 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[388]) ).

thf(465,plain,
    ! [SV80: $i,SV25: $i] :
      ( ( ~ ( subset @ ( singleton @ SV25 ) @ ( singleton @ SV80 ) )
        | ( SV25 = SV80 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[390]) ).

thf(466,plain,
    ! [SV81: $i,SV26: $i] :
      ( ( subset @ SV26 @ ( set_union2 @ SV26 @ SV81 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[391]) ).

thf(467,plain,
    ! [SV82: $i,SV27: $i] :
      ( ( ! [SY305: $i] :
            ( ~ ( subset @ SV27 @ SV82 )
            | ~ ( subset @ SY305 @ SV82 )
            | ( subset @ ( set_union2 @ SV27 @ SY305 ) @ SV82 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[392]) ).

thf(468,plain,
    ! [SV83: $i,SV28: $i] :
      ( ( ! [SY306: $i] :
            ( ( singleton @ SV28 )
           != ( unordered_pair @ SV83 @ SY306 ) )
        | ( SV28 = SV83 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[393]) ).

thf(469,plain,
    ! [SV84: $i,SV29: $i] :
      ( ( ! [SY307: $i] :
            ( ( ( singleton @ SV29 )
             != ( unordered_pair @ SV84 @ SY307 ) )
            | ( SV84 = SY307 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[394]) ).

thf(470,plain,
    ! [SV85: $i,SV30: $i] :
      ( ( ~ ( in @ SV30 @ SV85 )
        | ~ ( in @ SV85 @ SV30 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[395]) ).

thf(471,plain,
    ! [SV86: $i,SV31: $i] :
      ( ( ~ ( proper_subset @ SV31 @ SV86 )
        | ~ ( proper_subset @ SV86 @ SV31 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[396]) ).

thf(472,plain,
    ! [SV87: $i,SV32: $i] :
      ( ( ( unordered_pair @ SV32 @ SV87 )
        = ( unordered_pair @ SV87 @ SV32 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[397]) ).

thf(473,plain,
    ! [SV88: $i,SV33: $i] :
      ( ( ( set_union2 @ SV33 @ SV88 )
        = ( set_union2 @ SV88 @ SV33 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[398]) ).

thf(474,plain,
    ! [SV89: $i,SV34: $i] :
      ( ( ( set_intersection2 @ SV34 @ SV89 )
        = ( set_intersection2 @ SV89 @ SV34 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[399]) ).

thf(475,plain,
    ! [SV90: $i,SV35: $i] :
      ( ( ( ordered_pair @ SV35 @ SV90 )
        = ( unordered_pair @ ( unordered_pair @ SV35 @ SV90 ) @ ( singleton @ SV35 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[400]) ).

thf(476,plain,
    ! [SV91: $i,SV36: $i] :
      ( ( ~ ( empty @ ( ordered_pair @ SV36 @ SV91 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[401]) ).

thf(477,plain,
    ! [SV37: $i] :
      ( ( ( empty @ SV37 )
        = $true )
      | ( ( ! [SY235: $i] :
              ~ ( empty @ ( set_union2 @ SV37 @ SY235 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[402]) ).

thf(478,plain,
    ! [SV38: $i] :
      ( ( ( empty @ SV38 )
        = $true )
      | ( ( ! [SY236: $i] :
              ~ ( empty @ ( set_union2 @ SY236 @ SV38 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[403]) ).

thf(479,plain,
    ! [SV41: $i] :
      ( ( proper_subset @ SV41 @ SV41 )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[406]) ).

thf(480,plain,
    ! [SV92: $i,SV43: $i] :
      ( ( ~ ( disjoint @ SV43 @ SV92 )
        | ( disjoint @ SV92 @ SV43 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[409]) ).

thf(481,plain,
    ! [SV48: $i] :
      ( ( ( ~ ( empty @ SV48 ) )
        = $true )
      | ( ( SV48 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[414]) ).

thf(482,plain,
    ! [SV49: $i,SV93: $i] :
      ( ( ~ ( empty @ SV93 )
        | ~ ( in @ SV49 @ SV93 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[415]) ).

thf(483,plain,
    ! [SV94: $i,SV50: $i] :
      ( ( ( SV50 = SV94 )
        | ~ ( empty @ SV50 )
        | ~ ( empty @ SV94 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[416]) ).

thf(484,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != SX0 )
            | ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[417]) ).

thf(485,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( disjoint @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[417]) ).

thf(486,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != empty_set )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[418]) ).

thf(487,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[418]) ).

thf(488,plain,
    ! [SV51: $i] :
      ( ( ~ ! [SY240: $i,SY241: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                            | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                             != SV51 ) )
                        | ~ ( ~ ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                            | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                             != SY240 ) ) )
                  | ~ ( ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                      | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                        = SV51 )
                      | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                        = SY240 ) ) )
              | ( SY241
                = ( unordered_pair @ SV51 @ SY240 ) ) )
        | ~ ! [SY242: $i,SY243: $i] :
              ( ( SY243
               != ( unordered_pair @ SV51 @ SY242 ) )
              | ~ ( ~ ! [SY244: $i] :
                        ( ~ ( in @ SY244 @ SY243 )
                        | ( SY244 = SV51 )
                        | ( SY244 = SY242 ) )
                  | ~ ~ ( ~ ! [SY245: $i] :
                              ( ( SY245 != SV51 )
                              | ( in @ SY245 @ SY243 ) )
                        | ~ ! [SX3: $i] :
                              ( ( SX3 != SY242 )
                              | ( in @ SX3 @ SY243 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[419]) ).

thf(489,plain,
    ! [SV52: $i] :
      ( ( ~ ! [SY247: $i,SY248: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SV52 )
                      | ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY247 )
                      | ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SV52 )
                            | ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) )
                        | ~ ( ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY247 )
                            | ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) ) ) )
              | ( SY248
                = ( set_intersection2 @ SV52 @ SY247 ) ) )
        | ~ ! [SY249: $i,SY250: $i] :
              ( ( SY250
               != ( set_intersection2 @ SV52 @ SY249 ) )
              | ~ ( ~ ! [SY251: $i] :
                        ( ~ ( in @ SY251 @ SV52 )
                        | ~ ( in @ SY251 @ SY249 )
                        | ( in @ SY251 @ SY250 ) )
                  | ~ ~ ( ~ ! [SY252: $i] :
                              ( ~ ( in @ SY252 @ SY250 )
                              | ( in @ SY252 @ SV52 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY250 )
                              | ( in @ SX3 @ SY249 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[420]) ).

thf(490,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                    | ~ ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) )
                | ~ ( ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                    | ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) ) )
            | ( SX1
              = ( powerset @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[421]) ).

thf(491,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( powerset @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ( subset @ SX2 @ SX0 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( subset @ SX2 @ SX0 )
                      | ( in @ SX2 @ SX1 ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[421]) ).

thf(492,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( in @ SX0 @ SX1 )
            | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[422]) ).

thf(493,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
            | ( in @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[422]) ).

thf(494,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 = SX1 )
            | ~ ( subset @ SX0 @ SX1 )
            | ( proper_subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[423]) ).

thf(495,plain,
    ( ( ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                  ( ~ ( proper_subset @ SX0 @ SX1 )
                  | ( SX0 != SX1 ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ~ ( proper_subset @ SX0 @ SX1 )
                  | ( subset @ SX0 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[423]) ).

thf(496,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( in @ ( sK20_B @ SX0 ) @ SX0 )
            | ( SX0 = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[424]) ).

thf(497,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] :
                ~ ( in @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[424]) ).

thf(498,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ( in @ ( sK22_C @ SX1 @ SX0 ) @ ( set_intersection2 @ SX0 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[425]) ).

thf(499,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ! [SX2: $i] :
                ~ ( in @ SX2 @ ( set_intersection2 @ SX0 @ SX1 ) )
            | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[425]) ).

thf(500,plain,
    ! [SV53: $i] :
      ( ( ~ ! [SY254: $i,SY255: $i] :
              ( ~ ( in @ SV53 @ SY255 )
              | ~ ( in @ SY254 @ SY255 )
              | ( subset @ ( unordered_pair @ SV53 @ SY254 ) @ SY255 ) )
        | ~ ~ ( ~ ! [SY256: $i,SY257: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV53 @ SY256 ) @ SY257 )
                    | ( in @ SV53 @ SY257 ) )
              | ~ ! [SY258: $i,SY259: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV53 @ SY258 ) @ SY259 )
                    | ( in @ SY258 @ SY259 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[426]) ).

thf(501,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ~ ( ~ ! [SY308: $i,SY309: $i] :
                  ( ~ ( in @ SV54 @ SY308 )
                  | ~ ( in @ SV95 @ SY309 )
                  | ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY308 @ SY309 ) ) )
            | ~ ~ ( ~ ! [SY310: $i] :
                        ( ! [SY311: $i] :
                            ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY310 @ SY311 ) )
                        | ( in @ SV54 @ SY310 ) )
                  | ~ ! [SY312: $i,SY313: $i] :
                        ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY312 @ SY313 ) )
                        | ( in @ SV95 @ SY313 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[427]) ).

thf(502,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ~ ( subset @ SX1 @ SX0 )
            | ( SX0 = SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[428]) ).

thf(503,plain,
    ( ( ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0 != SX1 )
                  | ( subset @ SX0 @ SX1 ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0 != SX1 )
                  | ( subset @ SX1 @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[428]) ).

thf(504,plain,
    ! [SV55: $i] :
      ( ( ~ ! [SY267: $i,SY268: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SV55 )
                      | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY267 )
                      | ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SV55 )
                            | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) )
                        | ~ ( ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY267 )
                            | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) ) ) )
              | ( SY268
                = ( set_difference @ SV55 @ SY267 ) ) )
        | ~ ! [SY269: $i,SY270: $i] :
              ( ( SY270
               != ( set_difference @ SV55 @ SY269 ) )
              | ~ ( ~ ! [SY271: $i] :
                        ( ~ ( in @ SY271 @ SV55 )
                        | ( in @ SY271 @ SY269 )
                        | ( in @ SY271 @ SY270 ) )
                  | ~ ~ ( ~ ! [SY272: $i] :
                              ( ~ ( in @ SY272 @ SY270 )
                              | ( in @ SY272 @ SV55 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY270 )
                              | ~ ( in @ SX3 @ SY269 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[429]) ).

thf(505,plain,
    ! [SV56: $i] :
      ( ( ~ ! [SY274: $i,SY275: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                            | ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SV56 ) )
                        | ~ ( ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                            | ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY274 ) ) )
                  | ~ ( ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                      | ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SV56 )
                      | ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY274 ) ) )
              | ( SY275
                = ( set_union2 @ SV56 @ SY274 ) ) )
        | ~ ! [SY276: $i,SY277: $i] :
              ( ( SY277
               != ( set_union2 @ SV56 @ SY276 ) )
              | ~ ( ~ ! [SY278: $i] :
                        ( ~ ( in @ SY278 @ SY277 )
                        | ( in @ SY278 @ SV56 )
                        | ( in @ SY278 @ SY276 ) )
                  | ~ ~ ( ~ ! [SY279: $i] :
                              ( ~ ( in @ SY279 @ SV56 )
                              | ( in @ SY279 @ SY277 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY276 )
                              | ( in @ SX3 @ SY277 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[430]) ).

thf(506,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_intersection2 @ SX0 @ SX1 )
             != empty_set )
            | ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[431]) ).

thf(507,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( disjoint @ SX0 @ SX1 )
            | ( ( set_intersection2 @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[431]) ).

thf(508,plain,
    ( ( ~ ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[432]) ).

thf(509,plain,
    ( ( ~ ~ ( ~ ( ( sK1_A != empty_set ) )
            | ~ ( ( sK1_A
                 != ( singleton @ sK2_SY183 ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[432]) ).

thf(510,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
            | ( SX0 = empty_set )
            | ( SX0
              = ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[433]) ).

thf(511,plain,
    ( ( ~ ~ ( ~ ! [SX0: $i] :
                  ( ( SX0 != empty_set )
                  | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0
                   != ( singleton @ SX1 ) )
                  | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[433]) ).

thf(512,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( in @ SX0 @ SX1 )
            | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[434]) ).

thf(513,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
            | ( in @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[434]) ).

thf(514,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX1 ) )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[435]) ).

thf(515,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ! [SX2: $i] :
                ( ~ ( in @ SX2 @ SX0 )
                | ( in @ SX2 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[435]) ).

thf(516,plain,
    ! [SV96: $i,SV57: $i] :
      ( ( ~ ( ~ ! [SY314: $i] :
                  ( ! [SY315: $i] :
                      ( ( ordered_pair @ SV57 @ SV96 )
                     != ( ordered_pair @ SY314 @ SY315 ) )
                  | ( SV57 = SY314 ) )
            | ~ ! [SY316: $i,SY317: $i] :
                  ( ( ( ordered_pair @ SV57 @ SV96 )
                   != ( ordered_pair @ SY316 @ SY317 ) )
                  | ( SV96 = SY317 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[436]) ).

thf(517,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
                | ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) )
            | ~ ( ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
                | ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) ) )
        | ( SV58 = SV97 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[437]) ).

thf(518,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ~ ( ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[438]) ).

thf(519,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ! [SX2: $i] :
                ( ~ ( in @ SX2 @ SX0 )
                | ~ ( in @ SX2 @ SX1 ) )
            | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[438]) ).

thf(520,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ( ( sK21_C @ SX1 @ SX0 )
                     != SX0 )
                    | ~ ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ( ( sK21_C @ SX1 @ SX0 )
                      = SX0 )
                    | ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) ) )
            | ( SX1
              = ( singleton @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[439]) ).

thf(521,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( singleton @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ( SX2 != SX0 )
                      | ( in @ SX2 @ SX1 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ( SX2 = SX0 ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[439]) ).

thf(522,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ! [SX2: $i] :
                        ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX2 )
                        | ~ ( in @ SX2 @ SX0 ) )
                    | ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ~ ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ ( sK9_SY185 @ SX1 @ SX0 ) )
                        | ~ ( in @ ( sK9_SY185 @ SX1 @ SX0 ) @ SX0 ) )
                    | ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) ) )
            | ( SX1
              = ( union @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[440]) ).

thf(523,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( union @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ! [SX3: $i] :
                          ( ~ ( in @ SX2 @ SX3 )
                          | ~ ( in @ SX3 @ SX0 ) )
                      | ( in @ SX2 @ SX1 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ~ ( ~ ( in @ SX2 @ ( sK7_D @ SX2 @ SX1 @ SX0 ) )
                          | ~ ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[440]) ).

thf(524,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != empty_set )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[441]) ).

thf(525,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[441]) ).

thf(526,plain,
    ! [SV59: $i] :
      ( ( ~ ! [SY287: $i,SY288: $i] :
              ( ~ ( ~ ( ! [SY289: $i,SY290: $i] :
                          ( ~ ( in @ SY289 @ SV59 )
                          | ~ ( in @ SY290 @ SY287 )
                          | ( ( sK14_D @ SY288 @ SY287 @ SV59 )
                           != ( ordered_pair @ SY289 @ SY290 ) ) )
                      | ~ ( in @ ( sK14_D @ SY288 @ SY287 @ SV59 ) @ SY288 ) )
                  | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SY288 @ SY287 @ SV59 ) @ SV59 )
                                | ~ ( in @ ( sK16_SY191 @ SY288 @ SY287 @ SV59 ) @ SY287 ) )
                          | ( ( sK14_D @ SY288 @ SY287 @ SV59 )
                           != ( ordered_pair @ ( sK15_SY189 @ SY288 @ SY287 @ SV59 ) @ ( sK16_SY191 @ SY288 @ SY287 @ SV59 ) ) ) )
                      | ( in @ ( sK14_D @ SY288 @ SY287 @ SV59 ) @ SY288 ) ) )
              | ( SY288
                = ( cartesian_product2 @ SV59 @ SY287 ) ) )
        | ~ ! [SY291: $i,SY292: $i] :
              ( ( SY292
               != ( cartesian_product2 @ SV59 @ SY291 ) )
              | ~ ( ~ ! [SY293: $i] :
                        ( ! [SY294: $i,SY295: $i] :
                            ( ~ ( in @ SY294 @ SV59 )
                            | ~ ( in @ SY295 @ SY291 )
                            | ( SY293
                             != ( ordered_pair @ SY294 @ SY295 ) ) )
                        | ( in @ SY293 @ SY292 ) )
                  | ~ ! [SY296: $i] :
                        ( ~ ( in @ SY296 @ SY292 )
                        | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY296 @ SY292 @ SY291 @ SV59 ) @ SV59 )
                                  | ~ ( in @ ( sK13_SY186 @ SY296 @ SY292 @ SY291 @ SV59 ) @ SY291 ) )
                            | ( SY296
                             != ( ordered_pair @ ( sK12_E @ SY296 @ SY292 @ SY291 @ SV59 ) @ ( sK13_SY186 @ SY296 @ SY292 @ SY291 @ SV59 ) ) ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[442]) ).

thf(527,plain,
    ! [SV60: $i,SV2: $i] :
      ( ( ( ~ ( in @ SV2 @ SV60 ) )
        = $true )
      | ( ( ( set_union2 @ ( singleton @ SV2 ) @ SV60 )
          = SV60 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[444]) ).

thf(528,plain,
    ! [SV61: $i,SV3: $i] :
      ( ( ( ~ ( disjoint @ ( singleton @ SV3 ) @ SV61 ) )
        = $true )
      | ( ( ~ ( in @ SV3 @ SV61 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[445]) ).

thf(529,plain,
    ! [SV62: $i,SV4: $i] :
      ( ( ( in @ SV4 @ SV62 )
        = $true )
      | ( ( disjoint @ ( singleton @ SV4 ) @ SV62 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[446]) ).

thf(530,plain,
    ! [SV63: $i,SV5: $i] :
      ( ( ( ~ ( subset @ SV5 @ SV63 ) )
        = $true )
      | ( ( ! [SY297: $i] :
              ( ( in @ SY297 @ SV5 )
              | ( subset @ SV5 @ ( set_difference @ SV63 @ ( singleton @ SY297 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[447]) ).

thf(531,plain,
    ! [SV64: $i,SV6: $i] :
      ( ( ( ~ ( in @ SV6 @ SV64 ) )
        = $true )
      | ( ( subset @ SV6 @ ( union @ SV64 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[448]) ).

thf(532,plain,
    ! [SV65: $i,SV98: $i,SV7: $i] :
      ( ( ! [SY318: $i] :
            ( ( SV7 = SY318 )
            | ( SV7 = SV98 )
            | ( ( unordered_pair @ SV7 @ SV65 )
             != ( unordered_pair @ SV98 @ SY318 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[449]) ).

thf(533,plain,
    ! [SV66: $i,SV8: $i] :
      ( ( ( ~ ( subset @ SV8 @ SV66 ) )
        = $true )
      | ( ( ( set_union2 @ SV8 @ SV66 )
          = SV66 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[450]) ).

thf(534,plain,
    ! [SV99: $i,SV68: $i,SV10: $i] :
      ( ( ~ ( subset @ SV10 @ SV68 )
        | ~ ( subset @ SV10 @ SV99 )
        | ( subset @ SV10 @ ( set_intersection2 @ SV68 @ SV99 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[452]) ).

thf(535,plain,
    ! [SV100: $i,SV69: $i,SV11: $i] :
      ( ( ~ ( subset @ SV11 @ SV69 )
        | ~ ( subset @ SV69 @ SV100 )
        | ( subset @ SV11 @ SV100 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[453]) ).

thf(536,plain,
    ! [SV70: $i,SV12: $i] :
      ( ( ( ~ ( subset @ SV12 @ SV70 ) )
        = $true )
      | ( ( ! [SY302: $i] : ( subset @ ( set_intersection2 @ SV12 @ SY302 ) @ ( set_intersection2 @ SV70 @ SY302 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[454]) ).

thf(537,plain,
    ! [SV71: $i,SV13: $i] :
      ( ( ( ~ ( subset @ SV13 @ SV71 ) )
        = $true )
      | ( ( ( set_intersection2 @ SV13 @ SV71 )
          = SV13 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[455]) ).

thf(538,plain,
    ! [SV72: $i,SV15: $i] :
      ( ( ( ~ ( subset @ SV15 @ SV72 ) )
        = $true )
      | ( ( ! [SY303: $i] : ( subset @ ( set_difference @ SV15 @ SY303 ) @ ( set_difference @ SV72 @ SY303 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[456]) ).

thf(539,plain,
    ! [SV18: $i] :
      ( ( ( subset @ SV18 @ empty_set )
        = $false )
      | ( ( SV18 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[459]) ).

thf(540,plain,
    ! [SV76: $i,SV20: $i] :
      ( ( ( ~ ( subset @ SV20 @ SV76 ) )
        = $true )
      | ( ( SV76
          = ( set_union2 @ SV20 @ ( set_difference @ SV76 @ SV20 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[461]) ).

thf(541,plain,
    ! [SV22: $i,SV78: $i] :
      ( ( ( ~ ( proper_subset @ SV78 @ SV22 ) )
        = $true )
      | ( ( ~ ( subset @ SV22 @ SV78 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[463]) ).

thf(542,plain,
    ! [SV23: $i,SV101: $i,SV79: $i] :
      ( ( ~ ( disjoint @ SV79 @ SV101 )
        | ~ ( subset @ SV23 @ SV79 )
        | ( disjoint @ SV23 @ SV101 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[464]) ).

thf(543,plain,
    ! [SV80: $i,SV25: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV25 ) @ ( singleton @ SV80 ) ) )
        = $true )
      | ( ( SV25 = SV80 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[465]) ).

thf(544,plain,
    ! [SV102: $i,SV82: $i,SV27: $i] :
      ( ( ~ ( subset @ SV27 @ SV82 )
        | ~ ( subset @ SV102 @ SV82 )
        | ( subset @ ( set_union2 @ SV27 @ SV102 ) @ SV82 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[467]) ).

thf(545,plain,
    ! [SV83: $i,SV28: $i] :
      ( ( ( ! [SY306: $i] :
              ( ( singleton @ SV28 )
             != ( unordered_pair @ SV83 @ SY306 ) ) )
        = $true )
      | ( ( SV28 = SV83 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[468]) ).

thf(546,plain,
    ! [SV103: $i,SV84: $i,SV29: $i] :
      ( ( ( ( singleton @ SV29 )
         != ( unordered_pair @ SV84 @ SV103 ) )
        | ( SV84 = SV103 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[469]) ).

thf(547,plain,
    ! [SV85: $i,SV30: $i] :
      ( ( ( ~ ( in @ SV30 @ SV85 ) )
        = $true )
      | ( ( ~ ( in @ SV85 @ SV30 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[470]) ).

thf(548,plain,
    ! [SV86: $i,SV31: $i] :
      ( ( ( ~ ( proper_subset @ SV31 @ SV86 ) )
        = $true )
      | ( ( ~ ( proper_subset @ SV86 @ SV31 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[471]) ).

thf(549,plain,
    ! [SV91: $i,SV36: $i] :
      ( ( empty @ ( ordered_pair @ SV36 @ SV91 ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[476]) ).

thf(550,plain,
    ! [SV104: $i,SV37: $i] :
      ( ( ( ~ ( empty @ ( set_union2 @ SV37 @ SV104 ) ) )
        = $true )
      | ( ( empty @ SV37 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[477]) ).

thf(551,plain,
    ! [SV38: $i,SV105: $i] :
      ( ( ( ~ ( empty @ ( set_union2 @ SV105 @ SV38 ) ) )
        = $true )
      | ( ( empty @ SV38 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[478]) ).

thf(552,plain,
    ! [SV92: $i,SV43: $i] :
      ( ( ( ~ ( disjoint @ SV43 @ SV92 ) )
        = $true )
      | ( ( disjoint @ SV92 @ SV43 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[480]) ).

thf(553,plain,
    ! [SV48: $i] :
      ( ( ( empty @ SV48 )
        = $false )
      | ( ( SV48 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[481]) ).

thf(554,plain,
    ! [SV49: $i,SV93: $i] :
      ( ( ( ~ ( empty @ SV93 ) )
        = $true )
      | ( ( ~ ( in @ SV49 @ SV93 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[482]) ).

thf(555,plain,
    ! [SV94: $i,SV50: $i] :
      ( ( ( ( SV50 = SV94 )
          | ~ ( empty @ SV50 ) )
        = $true )
      | ( ( ~ ( empty @ SV94 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[483]) ).

thf(556,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_difference @ SX0 @ SX1 )
           != SX0 )
          | ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[484]) ).

thf(557,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( disjoint @ SX0 @ SX1 )
          | ( ( set_difference @ SX0 @ SX1 )
            = SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[485]) ).

thf(558,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_difference @ SX0 @ SX1 )
           != empty_set )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[486]) ).

thf(559,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ( ( set_difference @ SX0 @ SX1 )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[487]) ).

thf(560,plain,
    ! [SV51: $i] :
      ( ( ~ ! [SY240: $i,SY241: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                            | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                             != SV51 ) )
                        | ~ ( ~ ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                            | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                             != SY240 ) ) )
                  | ~ ( ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                      | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                        = SV51 )
                      | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                        = SY240 ) ) )
              | ( SY241
                = ( unordered_pair @ SV51 @ SY240 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[488]) ).

thf(561,plain,
    ! [SV51: $i] :
      ( ( ~ ! [SY242: $i,SY243: $i] :
              ( ( SY243
               != ( unordered_pair @ SV51 @ SY242 ) )
              | ~ ( ~ ! [SY244: $i] :
                        ( ~ ( in @ SY244 @ SY243 )
                        | ( SY244 = SV51 )
                        | ( SY244 = SY242 ) )
                  | ~ ~ ( ~ ! [SY245: $i] :
                              ( ( SY245 != SV51 )
                              | ( in @ SY245 @ SY243 ) )
                        | ~ ! [SX3: $i] :
                              ( ( SX3 != SY242 )
                              | ( in @ SX3 @ SY243 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[488]) ).

thf(562,plain,
    ! [SV52: $i] :
      ( ( ~ ! [SY247: $i,SY248: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SV52 )
                      | ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY247 )
                      | ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SV52 )
                            | ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) )
                        | ~ ( ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY247 )
                            | ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) ) ) )
              | ( SY248
                = ( set_intersection2 @ SV52 @ SY247 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[489]) ).

thf(563,plain,
    ! [SV52: $i] :
      ( ( ~ ! [SY249: $i,SY250: $i] :
              ( ( SY250
               != ( set_intersection2 @ SV52 @ SY249 ) )
              | ~ ( ~ ! [SY251: $i] :
                        ( ~ ( in @ SY251 @ SV52 )
                        | ~ ( in @ SY251 @ SY249 )
                        | ( in @ SY251 @ SY250 ) )
                  | ~ ~ ( ~ ! [SY252: $i] :
                              ( ~ ( in @ SY252 @ SY250 )
                              | ( in @ SY252 @ SV52 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY250 )
                              | ( in @ SX3 @ SY249 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[489]) ).

thf(564,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                  | ~ ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) )
              | ~ ( ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                  | ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) ) )
          | ( SX1
            = ( powerset @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[490]) ).

thf(565,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX1
           != ( powerset @ SX0 ) )
          | ~ ( ~ ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX1 )
                    | ( subset @ SX2 @ SX0 ) )
              | ~ ! [SX2: $i] :
                    ( ~ ( subset @ SX2 @ SX0 )
                    | ( in @ SX2 @ SX1 ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[491]) ).

thf(566,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( in @ SX0 @ SX1 )
          | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[492]) ).

thf(567,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
          | ( in @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[493]) ).

thf(568,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0 = SX1 )
          | ~ ( subset @ SX0 @ SX1 )
          | ( proper_subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[494]) ).

thf(569,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( proper_subset @ SX0 @ SX1 )
                | ( SX0 != SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( proper_subset @ SX0 @ SX1 )
                | ( subset @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[495]) ).

thf(570,plain,
    ( ( ! [SX0: $i] :
          ( ( in @ ( sK20_B @ SX0 ) @ SX0 )
          | ( SX0 = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[496]) ).

thf(571,plain,
    ( ( ! [SX0: $i] :
          ( ( SX0 != empty_set )
          | ! [SX1: $i] :
              ~ ( in @ SX1 @ SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[497]) ).

thf(572,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( disjoint @ SX0 @ SX1 )
          | ( in @ ( sK22_C @ SX1 @ SX0 ) @ ( set_intersection2 @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[498]) ).

thf(573,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ! [SX2: $i] :
              ~ ( in @ SX2 @ ( set_intersection2 @ SX0 @ SX1 ) )
          | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[499]) ).

thf(574,plain,
    ! [SV53: $i] :
      ( ( ~ ! [SY254: $i,SY255: $i] :
              ( ~ ( in @ SV53 @ SY255 )
              | ~ ( in @ SY254 @ SY255 )
              | ( subset @ ( unordered_pair @ SV53 @ SY254 ) @ SY255 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[500]) ).

thf(575,plain,
    ! [SV53: $i] :
      ( ( ~ ~ ( ~ ! [SY256: $i,SY257: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV53 @ SY256 ) @ SY257 )
                    | ( in @ SV53 @ SY257 ) )
              | ~ ! [SY258: $i,SY259: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV53 @ SY258 ) @ SY259 )
                    | ( in @ SY258 @ SY259 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[500]) ).

thf(576,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ~ ! [SY308: $i,SY309: $i] :
              ( ~ ( in @ SV54 @ SY308 )
              | ~ ( in @ SV95 @ SY309 )
              | ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY308 @ SY309 ) ) )
        | ~ ~ ( ~ ! [SY310: $i] :
                    ( ! [SY311: $i] :
                        ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY310 @ SY311 ) )
                    | ( in @ SV54 @ SY310 ) )
              | ~ ! [SY312: $i,SY313: $i] :
                    ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY312 @ SY313 ) )
                    | ( in @ SV95 @ SY313 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[501]) ).

thf(577,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ~ ( subset @ SX1 @ SX0 )
          | ( SX0 = SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[502]) ).

thf(578,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( SX0 != SX1 )
                | ( subset @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX0 != SX1 )
                | ( subset @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[503]) ).

thf(579,plain,
    ! [SV55: $i] :
      ( ( ~ ! [SY267: $i,SY268: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SV55 )
                      | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY267 )
                      | ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SV55 )
                            | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) )
                        | ~ ( ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY267 )
                            | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) ) ) )
              | ( SY268
                = ( set_difference @ SV55 @ SY267 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[504]) ).

thf(580,plain,
    ! [SV55: $i] :
      ( ( ~ ! [SY269: $i,SY270: $i] :
              ( ( SY270
               != ( set_difference @ SV55 @ SY269 ) )
              | ~ ( ~ ! [SY271: $i] :
                        ( ~ ( in @ SY271 @ SV55 )
                        | ( in @ SY271 @ SY269 )
                        | ( in @ SY271 @ SY270 ) )
                  | ~ ~ ( ~ ! [SY272: $i] :
                              ( ~ ( in @ SY272 @ SY270 )
                              | ( in @ SY272 @ SV55 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY270 )
                              | ~ ( in @ SX3 @ SY269 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[504]) ).

thf(581,plain,
    ! [SV56: $i] :
      ( ( ~ ! [SY274: $i,SY275: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                            | ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SV56 ) )
                        | ~ ( ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                            | ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY274 ) ) )
                  | ~ ( ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                      | ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SV56 )
                      | ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY274 ) ) )
              | ( SY275
                = ( set_union2 @ SV56 @ SY274 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[505]) ).

thf(582,plain,
    ! [SV56: $i] :
      ( ( ~ ! [SY276: $i,SY277: $i] :
              ( ( SY277
               != ( set_union2 @ SV56 @ SY276 ) )
              | ~ ( ~ ! [SY278: $i] :
                        ( ~ ( in @ SY278 @ SY277 )
                        | ( in @ SY278 @ SV56 )
                        | ( in @ SY278 @ SY276 ) )
                  | ~ ~ ( ~ ! [SY279: $i] :
                              ( ~ ( in @ SY279 @ SV56 )
                              | ( in @ SY279 @ SY277 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY276 )
                              | ( in @ SX3 @ SY277 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[505]) ).

thf(583,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_intersection2 @ SX0 @ SX1 )
           != empty_set )
          | ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[506]) ).

thf(584,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( disjoint @ SX0 @ SX1 )
          | ( ( set_intersection2 @ SX0 @ SX1 )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[507]) ).

thf(585,plain,
    ( ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[508]) ).

thf(586,plain,
    ( ( ~ ( ~ ( ( sK1_A != empty_set ) )
          | ~ ( ( sK1_A
               != ( singleton @ sK2_SY183 ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[509]) ).

thf(587,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
          | ( SX0 = empty_set )
          | ( SX0
            = ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[510]) ).

thf(588,plain,
    ( ( ~ ( ~ ! [SX0: $i] :
                ( ( SX0 != empty_set )
                | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX0
                 != ( singleton @ SX1 ) )
                | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[511]) ).

thf(589,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( in @ SX0 @ SX1 )
          | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[512]) ).

thf(590,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
          | ( in @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[513]) ).

thf(591,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX0 )
              | ~ ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX1 ) )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[514]) ).

thf(592,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ! [SX2: $i] :
              ( ~ ( in @ SX2 @ SX0 )
              | ( in @ SX2 @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[515]) ).

thf(593,plain,
    ! [SV96: $i,SV57: $i] :
      ( ( ~ ! [SY314: $i] :
              ( ! [SY315: $i] :
                  ( ( ordered_pair @ SV57 @ SV96 )
                 != ( ordered_pair @ SY314 @ SY315 ) )
              | ( SV57 = SY314 ) )
        | ~ ! [SY316: $i,SY317: $i] :
              ( ( ( ordered_pair @ SV57 @ SV96 )
               != ( ordered_pair @ SY316 @ SY317 ) )
              | ( SV96 = SY317 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[516]) ).

thf(594,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
                  | ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) )
              | ~ ( ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
                  | ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) ) ) )
        = $true )
      | ( ( SV58 = SV97 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[517]) ).

thf(595,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( disjoint @ SX0 @ SX1 )
          | ~ ( ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX0 )
              | ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[518]) ).

thf(596,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ! [SX2: $i] :
              ( ~ ( in @ SX2 @ SX0 )
              | ~ ( in @ SX2 @ SX1 ) )
          | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[519]) ).

thf(597,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ( ( sK21_C @ SX1 @ SX0 )
                   != SX0 )
                  | ~ ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) )
              | ~ ( ( ( sK21_C @ SX1 @ SX0 )
                    = SX0 )
                  | ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ( SX1
            = ( singleton @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[520]) ).

thf(598,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX1
           != ( singleton @ SX0 ) )
          | ~ ( ~ ! [SX2: $i] :
                    ( ( SX2 != SX0 )
                    | ( in @ SX2 @ SX1 ) )
              | ~ ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX1 )
                    | ( SX2 = SX0 ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[521]) ).

thf(599,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ! [SX2: $i] :
                      ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX2 )
                      | ~ ( in @ SX2 @ SX0 ) )
                  | ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) )
              | ~ ( ~ ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ ( sK9_SY185 @ SX1 @ SX0 ) )
                      | ~ ( in @ ( sK9_SY185 @ SX1 @ SX0 ) @ SX0 ) )
                  | ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ( SX1
            = ( union @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[522]) ).

thf(600,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX1
           != ( union @ SX0 ) )
          | ~ ( ~ ! [SX2: $i] :
                    ( ! [SX3: $i] :
                        ( ~ ( in @ SX2 @ SX3 )
                        | ~ ( in @ SX3 @ SX0 ) )
                    | ( in @ SX2 @ SX1 ) )
              | ~ ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX1 )
                    | ~ ( ~ ( in @ SX2 @ ( sK7_D @ SX2 @ SX1 @ SX0 ) )
                        | ~ ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[523]) ).

thf(601,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_difference @ SX0 @ SX1 )
           != empty_set )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[524]) ).

thf(602,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ( ( set_difference @ SX0 @ SX1 )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[525]) ).

thf(603,plain,
    ! [SV59: $i] :
      ( ( ~ ! [SY287: $i,SY288: $i] :
              ( ~ ( ~ ( ! [SY289: $i,SY290: $i] :
                          ( ~ ( in @ SY289 @ SV59 )
                          | ~ ( in @ SY290 @ SY287 )
                          | ( ( sK14_D @ SY288 @ SY287 @ SV59 )
                           != ( ordered_pair @ SY289 @ SY290 ) ) )
                      | ~ ( in @ ( sK14_D @ SY288 @ SY287 @ SV59 ) @ SY288 ) )
                  | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SY288 @ SY287 @ SV59 ) @ SV59 )
                                | ~ ( in @ ( sK16_SY191 @ SY288 @ SY287 @ SV59 ) @ SY287 ) )
                          | ( ( sK14_D @ SY288 @ SY287 @ SV59 )
                           != ( ordered_pair @ ( sK15_SY189 @ SY288 @ SY287 @ SV59 ) @ ( sK16_SY191 @ SY288 @ SY287 @ SV59 ) ) ) )
                      | ( in @ ( sK14_D @ SY288 @ SY287 @ SV59 ) @ SY288 ) ) )
              | ( SY288
                = ( cartesian_product2 @ SV59 @ SY287 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[526]) ).

thf(604,plain,
    ! [SV59: $i] :
      ( ( ~ ! [SY291: $i,SY292: $i] :
              ( ( SY292
               != ( cartesian_product2 @ SV59 @ SY291 ) )
              | ~ ( ~ ! [SY293: $i] :
                        ( ! [SY294: $i,SY295: $i] :
                            ( ~ ( in @ SY294 @ SV59 )
                            | ~ ( in @ SY295 @ SY291 )
                            | ( SY293
                             != ( ordered_pair @ SY294 @ SY295 ) ) )
                        | ( in @ SY293 @ SY292 ) )
                  | ~ ! [SY296: $i] :
                        ( ~ ( in @ SY296 @ SY292 )
                        | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY296 @ SY292 @ SY291 @ SV59 ) @ SV59 )
                                  | ~ ( in @ ( sK13_SY186 @ SY296 @ SY292 @ SY291 @ SV59 ) @ SY291 ) )
                            | ( SY296
                             != ( ordered_pair @ ( sK12_E @ SY296 @ SY292 @ SY291 @ SV59 ) @ ( sK13_SY186 @ SY296 @ SY292 @ SY291 @ SV59 ) ) ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[526]) ).

thf(605,plain,
    ! [SV60: $i,SV2: $i] :
      ( ( ( in @ SV2 @ SV60 )
        = $false )
      | ( ( ( set_union2 @ ( singleton @ SV2 ) @ SV60 )
          = SV60 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[527]) ).

thf(606,plain,
    ! [SV61: $i,SV3: $i] :
      ( ( ( disjoint @ ( singleton @ SV3 ) @ SV61 )
        = $false )
      | ( ( ~ ( in @ SV3 @ SV61 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[528]) ).

thf(607,plain,
    ! [SV63: $i,SV5: $i] :
      ( ( ( subset @ SV5 @ SV63 )
        = $false )
      | ( ( ! [SY297: $i] :
              ( ( in @ SY297 @ SV5 )
              | ( subset @ SV5 @ ( set_difference @ SV63 @ ( singleton @ SY297 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[530]) ).

thf(608,plain,
    ! [SV64: $i,SV6: $i] :
      ( ( ( in @ SV6 @ SV64 )
        = $false )
      | ( ( subset @ SV6 @ ( union @ SV64 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[531]) ).

thf(609,plain,
    ! [SV65: $i,SV98: $i,SV106: $i,SV7: $i] :
      ( ( ( SV7 = SV106 )
        | ( SV7 = SV98 )
        | ( ( unordered_pair @ SV7 @ SV65 )
         != ( unordered_pair @ SV98 @ SV106 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[532]) ).

thf(610,plain,
    ! [SV66: $i,SV8: $i] :
      ( ( ( subset @ SV8 @ SV66 )
        = $false )
      | ( ( ( set_union2 @ SV8 @ SV66 )
          = SV66 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[533]) ).

thf(611,plain,
    ! [SV99: $i,SV68: $i,SV10: $i] :
      ( ( ( ~ ( subset @ SV10 @ SV68 )
          | ~ ( subset @ SV10 @ SV99 ) )
        = $true )
      | ( ( subset @ SV10 @ ( set_intersection2 @ SV68 @ SV99 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[534]) ).

thf(612,plain,
    ! [SV100: $i,SV69: $i,SV11: $i] :
      ( ( ( ~ ( subset @ SV11 @ SV69 )
          | ~ ( subset @ SV69 @ SV100 ) )
        = $true )
      | ( ( subset @ SV11 @ SV100 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[535]) ).

thf(613,plain,
    ! [SV70: $i,SV12: $i] :
      ( ( ( subset @ SV12 @ SV70 )
        = $false )
      | ( ( ! [SY302: $i] : ( subset @ ( set_intersection2 @ SV12 @ SY302 ) @ ( set_intersection2 @ SV70 @ SY302 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[536]) ).

thf(614,plain,
    ! [SV71: $i,SV13: $i] :
      ( ( ( subset @ SV13 @ SV71 )
        = $false )
      | ( ( ( set_intersection2 @ SV13 @ SV71 )
          = SV13 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[537]) ).

thf(615,plain,
    ! [SV72: $i,SV15: $i] :
      ( ( ( subset @ SV15 @ SV72 )
        = $false )
      | ( ( ! [SY303: $i] : ( subset @ ( set_difference @ SV15 @ SY303 ) @ ( set_difference @ SV72 @ SY303 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[538]) ).

thf(616,plain,
    ! [SV76: $i,SV20: $i] :
      ( ( ( subset @ SV20 @ SV76 )
        = $false )
      | ( ( SV76
          = ( set_union2 @ SV20 @ ( set_difference @ SV76 @ SV20 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[540]) ).

thf(617,plain,
    ! [SV22: $i,SV78: $i] :
      ( ( ( proper_subset @ SV78 @ SV22 )
        = $false )
      | ( ( ~ ( subset @ SV22 @ SV78 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[541]) ).

thf(618,plain,
    ! [SV23: $i,SV101: $i,SV79: $i] :
      ( ( ( ~ ( disjoint @ SV79 @ SV101 )
          | ~ ( subset @ SV23 @ SV79 ) )
        = $true )
      | ( ( disjoint @ SV23 @ SV101 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[542]) ).

thf(619,plain,
    ! [SV80: $i,SV25: $i] :
      ( ( ( subset @ ( singleton @ SV25 ) @ ( singleton @ SV80 ) )
        = $false )
      | ( ( SV25 = SV80 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[543]) ).

thf(620,plain,
    ! [SV102: $i,SV82: $i,SV27: $i] :
      ( ( ( ~ ( subset @ SV27 @ SV82 )
          | ~ ( subset @ SV102 @ SV82 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV27 @ SV102 ) @ SV82 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[544]) ).

thf(621,plain,
    ! [SV107: $i,SV83: $i,SV28: $i] :
      ( ( ( ( ( singleton @ SV28 )
           != ( unordered_pair @ SV83 @ SV107 ) ) )
        = $true )
      | ( ( SV28 = SV83 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[545]) ).

thf(622,plain,
    ! [SV103: $i,SV84: $i,SV29: $i] :
      ( ( ( ( ( singleton @ SV29 )
           != ( unordered_pair @ SV84 @ SV103 ) ) )
        = $true )
      | ( ( SV84 = SV103 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[546]) ).

thf(623,plain,
    ! [SV85: $i,SV30: $i] :
      ( ( ( in @ SV30 @ SV85 )
        = $false )
      | ( ( ~ ( in @ SV85 @ SV30 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[547]) ).

thf(624,plain,
    ! [SV86: $i,SV31: $i] :
      ( ( ( proper_subset @ SV31 @ SV86 )
        = $false )
      | ( ( ~ ( proper_subset @ SV86 @ SV31 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[548]) ).

thf(625,plain,
    ! [SV104: $i,SV37: $i] :
      ( ( ( empty @ ( set_union2 @ SV37 @ SV104 ) )
        = $false )
      | ( ( empty @ SV37 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[550]) ).

thf(626,plain,
    ! [SV38: $i,SV105: $i] :
      ( ( ( empty @ ( set_union2 @ SV105 @ SV38 ) )
        = $false )
      | ( ( empty @ SV38 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[551]) ).

thf(627,plain,
    ! [SV92: $i,SV43: $i] :
      ( ( ( disjoint @ SV43 @ SV92 )
        = $false )
      | ( ( disjoint @ SV92 @ SV43 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[552]) ).

thf(628,plain,
    ! [SV49: $i,SV93: $i] :
      ( ( ( empty @ SV93 )
        = $false )
      | ( ( ~ ( in @ SV49 @ SV93 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[554]) ).

thf(629,plain,
    ! [SV94: $i,SV50: $i] :
      ( ( ( SV50 = SV94 )
        = $true )
      | ( ( ~ ( empty @ SV50 ) )
        = $true )
      | ( ( ~ ( empty @ SV94 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[555]) ).

thf(630,plain,
    ! [SV108: $i] :
      ( ( ! [SY319: $i] :
            ( ( ( set_difference @ SV108 @ SY319 )
             != SV108 )
            | ( disjoint @ SV108 @ SY319 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[556]) ).

thf(631,plain,
    ! [SV109: $i] :
      ( ( ! [SY320: $i] :
            ( ~ ( disjoint @ SV109 @ SY320 )
            | ( ( set_difference @ SV109 @ SY320 )
              = SV109 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[557]) ).

thf(632,plain,
    ! [SV110: $i] :
      ( ( ! [SY321: $i] :
            ( ( ( set_difference @ SV110 @ SY321 )
             != empty_set )
            | ( subset @ SV110 @ SY321 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[558]) ).

thf(633,plain,
    ! [SV111: $i] :
      ( ( ! [SY322: $i] :
            ( ~ ( subset @ SV111 @ SY322 )
            | ( ( set_difference @ SV111 @ SY322 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[559]) ).

thf(634,plain,
    ! [SV51: $i] :
      ( ( ! [SY240: $i,SY241: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                          | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                           != SV51 ) )
                      | ~ ( ~ ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                          | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                           != SY240 ) ) )
                | ~ ( ( in @ ( sK18_D @ SY241 @ SY240 @ SV51 ) @ SY241 )
                    | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                      = SV51 )
                    | ( ( sK18_D @ SY241 @ SY240 @ SV51 )
                      = SY240 ) ) )
            | ( SY241
              = ( unordered_pair @ SV51 @ SY240 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[560]) ).

thf(635,plain,
    ! [SV51: $i] :
      ( ( ! [SY242: $i,SY243: $i] :
            ( ( SY243
             != ( unordered_pair @ SV51 @ SY242 ) )
            | ~ ( ~ ! [SY244: $i] :
                      ( ~ ( in @ SY244 @ SY243 )
                      | ( SY244 = SV51 )
                      | ( SY244 = SY242 ) )
                | ~ ~ ( ~ ! [SY245: $i] :
                            ( ( SY245 != SV51 )
                            | ( in @ SY245 @ SY243 ) )
                      | ~ ! [SX3: $i] :
                            ( ( SX3 != SY242 )
                            | ( in @ SX3 @ SY243 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[561]) ).

thf(636,plain,
    ! [SV52: $i] :
      ( ( ! [SY247: $i,SY248: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SV52 )
                    | ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY247 )
                    | ~ ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) )
                | ~ ~ ( ~ ( ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SV52 )
                          | ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) )
                      | ~ ( ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY247 )
                          | ( in @ ( sK10_D @ SY248 @ SY247 @ SV52 ) @ SY248 ) ) ) )
            | ( SY248
              = ( set_intersection2 @ SV52 @ SY247 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[562]) ).

thf(637,plain,
    ! [SV52: $i] :
      ( ( ! [SY249: $i,SY250: $i] :
            ( ( SY250
             != ( set_intersection2 @ SV52 @ SY249 ) )
            | ~ ( ~ ! [SY251: $i] :
                      ( ~ ( in @ SY251 @ SV52 )
                      | ~ ( in @ SY251 @ SY249 )
                      | ( in @ SY251 @ SY250 ) )
                | ~ ~ ( ~ ! [SY252: $i] :
                            ( ~ ( in @ SY252 @ SY250 )
                            | ( in @ SY252 @ SV52 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SY250 )
                            | ( in @ SX3 @ SY249 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[563]) ).

thf(638,plain,
    ! [SV112: $i] :
      ( ( ! [SY323: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SY323 @ SV112 ) @ SY323 )
                    | ~ ( subset @ ( sK19_C @ SY323 @ SV112 ) @ SV112 ) )
                | ~ ( ( in @ ( sK19_C @ SY323 @ SV112 ) @ SY323 )
                    | ( subset @ ( sK19_C @ SY323 @ SV112 ) @ SV112 ) ) )
            | ( SY323
              = ( powerset @ SV112 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[564]) ).

thf(639,plain,
    ! [SV113: $i] :
      ( ( ! [SY324: $i] :
            ( ( SY324
             != ( powerset @ SV113 ) )
            | ~ ( ~ ! [SY325: $i] :
                      ( ~ ( in @ SY325 @ SY324 )
                      | ( subset @ SY325 @ SV113 ) )
                | ~ ! [SY326: $i] :
                      ( ~ ( subset @ SY326 @ SV113 )
                      | ( in @ SY326 @ SY324 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[565]) ).

thf(640,plain,
    ! [SV114: $i] :
      ( ( ! [SY327: $i] :
            ( ~ ( in @ SV114 @ SY327 )
            | ( subset @ ( singleton @ SV114 ) @ SY327 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[566]) ).

thf(641,plain,
    ! [SV115: $i] :
      ( ( ! [SY328: $i] :
            ( ~ ( subset @ ( singleton @ SV115 ) @ SY328 )
            | ( in @ SV115 @ SY328 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[567]) ).

thf(642,plain,
    ! [SV116: $i] :
      ( ( ! [SY329: $i] :
            ( ( SV116 = SY329 )
            | ~ ( subset @ SV116 @ SY329 )
            | ( proper_subset @ SV116 @ SY329 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[568]) ).

thf(643,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( proper_subset @ SX0 @ SX1 )
            | ( SX0 != SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( proper_subset @ SX0 @ SX1 )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[569]) ).

thf(644,plain,
    ! [SV117: $i] :
      ( ( ( in @ ( sK20_B @ SV117 ) @ SV117 )
        | ( SV117 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[570]) ).

thf(645,plain,
    ! [SV118: $i] :
      ( ( ( SV118 != empty_set )
        | ! [SY330: $i] :
            ~ ( in @ SY330 @ SV118 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[571]) ).

thf(646,plain,
    ! [SV119: $i] :
      ( ( ! [SY331: $i] :
            ( ( disjoint @ SV119 @ SY331 )
            | ( in @ ( sK22_C @ SY331 @ SV119 ) @ ( set_intersection2 @ SV119 @ SY331 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[572]) ).

thf(647,plain,
    ! [SV120: $i] :
      ( ( ! [SY332: $i] :
            ( ! [SY333: $i] :
                ~ ( in @ SY333 @ ( set_intersection2 @ SV120 @ SY332 ) )
            | ~ ( disjoint @ SV120 @ SY332 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[573]) ).

thf(648,plain,
    ! [SV53: $i] :
      ( ( ! [SY254: $i,SY255: $i] :
            ( ~ ( in @ SV53 @ SY255 )
            | ~ ( in @ SY254 @ SY255 )
            | ( subset @ ( unordered_pair @ SV53 @ SY254 ) @ SY255 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[574]) ).

thf(649,plain,
    ! [SV53: $i] :
      ( ( ~ ( ~ ! [SY256: $i,SY257: $i] :
                  ( ~ ( subset @ ( unordered_pair @ SV53 @ SY256 ) @ SY257 )
                  | ( in @ SV53 @ SY257 ) )
            | ~ ! [SY258: $i,SY259: $i] :
                  ( ~ ( subset @ ( unordered_pair @ SV53 @ SY258 ) @ SY259 )
                  | ( in @ SY258 @ SY259 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[575]) ).

thf(650,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ~ ! [SY308: $i,SY309: $i] :
              ( ~ ( in @ SV54 @ SY308 )
              | ~ ( in @ SV95 @ SY309 )
              | ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY308 @ SY309 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[576]) ).

thf(651,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ~ ~ ( ~ ! [SY310: $i] :
                    ( ! [SY311: $i] :
                        ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY310 @ SY311 ) )
                    | ( in @ SV54 @ SY310 ) )
              | ~ ! [SY312: $i,SY313: $i] :
                    ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY312 @ SY313 ) )
                    | ( in @ SV95 @ SY313 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[576]) ).

thf(652,plain,
    ! [SV121: $i] :
      ( ( ! [SY334: $i] :
            ( ~ ( subset @ SV121 @ SY334 )
            | ~ ( subset @ SY334 @ SV121 )
            | ( SV121 = SY334 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[577]) ).

thf(653,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 != SX1 )
            | ( subset @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 != SX1 )
            | ( subset @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[578]) ).

thf(654,plain,
    ! [SV55: $i] :
      ( ( ! [SY267: $i,SY268: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SV55 )
                    | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY267 )
                    | ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) )
                | ~ ~ ( ~ ( ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SV55 )
                          | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) )
                      | ~ ( ~ ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY267 )
                          | ( in @ ( sK6_D @ SY268 @ SY267 @ SV55 ) @ SY268 ) ) ) )
            | ( SY268
              = ( set_difference @ SV55 @ SY267 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[579]) ).

thf(655,plain,
    ! [SV55: $i] :
      ( ( ! [SY269: $i,SY270: $i] :
            ( ( SY270
             != ( set_difference @ SV55 @ SY269 ) )
            | ~ ( ~ ! [SY271: $i] :
                      ( ~ ( in @ SY271 @ SV55 )
                      | ( in @ SY271 @ SY269 )
                      | ( in @ SY271 @ SY270 ) )
                | ~ ~ ( ~ ! [SY272: $i] :
                            ( ~ ( in @ SY272 @ SY270 )
                            | ( in @ SY272 @ SV55 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SY270 )
                            | ~ ( in @ SX3 @ SY269 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[580]) ).

thf(656,plain,
    ! [SV56: $i] :
      ( ( ! [SY274: $i,SY275: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                          | ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SV56 ) )
                      | ~ ( ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                          | ~ ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY274 ) ) )
                | ~ ( ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY275 )
                    | ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SV56 )
                    | ( in @ ( sK17_D @ SY275 @ SY274 @ SV56 ) @ SY274 ) ) )
            | ( SY275
              = ( set_union2 @ SV56 @ SY274 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[581]) ).

thf(657,plain,
    ! [SV56: $i] :
      ( ( ! [SY276: $i,SY277: $i] :
            ( ( SY277
             != ( set_union2 @ SV56 @ SY276 ) )
            | ~ ( ~ ! [SY278: $i] :
                      ( ~ ( in @ SY278 @ SY277 )
                      | ( in @ SY278 @ SV56 )
                      | ( in @ SY278 @ SY276 ) )
                | ~ ~ ( ~ ! [SY279: $i] :
                            ( ~ ( in @ SY279 @ SV56 )
                            | ( in @ SY279 @ SY277 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SY276 )
                            | ( in @ SX3 @ SY277 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[582]) ).

thf(658,plain,
    ! [SV122: $i] :
      ( ( ! [SY335: $i] :
            ( ( ( set_intersection2 @ SV122 @ SY335 )
             != empty_set )
            | ( disjoint @ SV122 @ SY335 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[583]) ).

thf(659,plain,
    ! [SV123: $i] :
      ( ( ! [SY336: $i] :
            ( ~ ( disjoint @ SV123 @ SY336 )
            | ( ( set_intersection2 @ SV123 @ SY336 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[584]) ).

thf(660,plain,
    ( ( ~ ( ( sK1_A != empty_set ) )
      | ~ ( ( sK1_A
           != ( singleton @ sK2_SY183 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[586]) ).

thf(661,plain,
    ! [SV124: $i] :
      ( ( ! [SY337: $i] :
            ( ~ ( subset @ SV124 @ ( singleton @ SY337 ) )
            | ( SV124 = empty_set )
            | ( SV124
              = ( singleton @ SY337 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[587]) ).

thf(662,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0
             != ( singleton @ SX1 ) )
            | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[588]) ).

thf(663,plain,
    ! [SV125: $i] :
      ( ( ! [SY338: $i] :
            ( ~ ( in @ SV125 @ SY338 )
            | ( subset @ ( singleton @ SV125 ) @ SY338 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[589]) ).

thf(664,plain,
    ! [SV126: $i] :
      ( ( ! [SY339: $i] :
            ( ~ ( subset @ ( singleton @ SV126 ) @ SY339 )
            | ( in @ SV126 @ SY339 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[590]) ).

thf(665,plain,
    ! [SV127: $i] :
      ( ( ! [SY340: $i] :
            ( ~ ( ~ ( in @ ( sK11_C @ SY340 @ SV127 ) @ SV127 )
                | ~ ~ ( in @ ( sK11_C @ SY340 @ SV127 ) @ SY340 ) )
            | ( subset @ SV127 @ SY340 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[591]) ).

thf(666,plain,
    ! [SV128: $i] :
      ( ( ! [SY341: $i] :
            ( ~ ( subset @ SV128 @ SY341 )
            | ! [SY342: $i] :
                ( ~ ( in @ SY342 @ SV128 )
                | ( in @ SY342 @ SY341 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[592]) ).

thf(667,plain,
    ! [SV96: $i,SV57: $i] :
      ( ( ~ ! [SY314: $i] :
              ( ! [SY315: $i] :
                  ( ( ordered_pair @ SV57 @ SV96 )
                 != ( ordered_pair @ SY314 @ SY315 ) )
              | ( SV57 = SY314 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[593]) ).

thf(668,plain,
    ! [SV96: $i,SV57: $i] :
      ( ( ~ ! [SY316: $i,SY317: $i] :
              ( ( ( ordered_pair @ SV57 @ SV96 )
               != ( ordered_pair @ SY316 @ SY317 ) )
              | ( SV96 = SY317 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[593]) ).

thf(669,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
              | ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) )
          | ~ ( ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
              | ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) ) )
        = $false )
      | ( ( SV58 = SV97 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[594]) ).

thf(670,plain,
    ! [SV129: $i] :
      ( ( ! [SY343: $i] :
            ( ( disjoint @ SV129 @ SY343 )
            | ~ ( ~ ( in @ ( sK23_C @ SY343 @ SV129 ) @ SV129 )
                | ~ ( in @ ( sK23_C @ SY343 @ SV129 ) @ SY343 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[595]) ).

thf(671,plain,
    ! [SV130: $i] :
      ( ( ! [SY344: $i] :
            ( ! [SY345: $i] :
                ( ~ ( in @ SY345 @ SV130 )
                | ~ ( in @ SY345 @ SY344 ) )
            | ~ ( disjoint @ SV130 @ SY344 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[596]) ).

thf(672,plain,
    ! [SV131: $i] :
      ( ( ! [SY346: $i] :
            ( ~ ( ~ ( ( ( sK21_C @ SY346 @ SV131 )
                     != SV131 )
                    | ~ ( in @ ( sK21_C @ SY346 @ SV131 ) @ SY346 ) )
                | ~ ( ( ( sK21_C @ SY346 @ SV131 )
                      = SV131 )
                    | ( in @ ( sK21_C @ SY346 @ SV131 ) @ SY346 ) ) )
            | ( SY346
              = ( singleton @ SV131 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[597]) ).

thf(673,plain,
    ! [SV132: $i] :
      ( ( ! [SY347: $i] :
            ( ( SY347
             != ( singleton @ SV132 ) )
            | ~ ( ~ ! [SY348: $i] :
                      ( ( SY348 != SV132 )
                      | ( in @ SY348 @ SY347 ) )
                | ~ ! [SY349: $i] :
                      ( ~ ( in @ SY349 @ SY347 )
                      | ( SY349 = SV132 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[598]) ).

thf(674,plain,
    ! [SV133: $i] :
      ( ( ! [SY350: $i] :
            ( ~ ( ~ ( ! [SY351: $i] :
                        ( ~ ( in @ ( sK8_C @ SY350 @ SV133 ) @ SY351 )
                        | ~ ( in @ SY351 @ SV133 ) )
                    | ~ ( in @ ( sK8_C @ SY350 @ SV133 ) @ SY350 ) )
                | ~ ( ~ ( ~ ( in @ ( sK8_C @ SY350 @ SV133 ) @ ( sK9_SY185 @ SY350 @ SV133 ) )
                        | ~ ( in @ ( sK9_SY185 @ SY350 @ SV133 ) @ SV133 ) )
                    | ( in @ ( sK8_C @ SY350 @ SV133 ) @ SY350 ) ) )
            | ( SY350
              = ( union @ SV133 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[599]) ).

thf(675,plain,
    ! [SV134: $i] :
      ( ( ! [SY352: $i] :
            ( ( SY352
             != ( union @ SV134 ) )
            | ~ ( ~ ! [SY353: $i] :
                      ( ! [SY354: $i] :
                          ( ~ ( in @ SY353 @ SY354 )
                          | ~ ( in @ SY354 @ SV134 ) )
                      | ( in @ SY353 @ SY352 ) )
                | ~ ! [SY355: $i] :
                      ( ~ ( in @ SY355 @ SY352 )
                      | ~ ( ~ ( in @ SY355 @ ( sK7_D @ SY355 @ SY352 @ SV134 ) )
                          | ~ ( in @ ( sK7_D @ SY355 @ SY352 @ SV134 ) @ SV134 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[600]) ).

thf(676,plain,
    ! [SV135: $i] :
      ( ( ! [SY356: $i] :
            ( ( ( set_difference @ SV135 @ SY356 )
             != empty_set )
            | ( subset @ SV135 @ SY356 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[601]) ).

thf(677,plain,
    ! [SV136: $i] :
      ( ( ! [SY357: $i] :
            ( ~ ( subset @ SV136 @ SY357 )
            | ( ( set_difference @ SV136 @ SY357 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[602]) ).

thf(678,plain,
    ! [SV59: $i] :
      ( ( ! [SY287: $i,SY288: $i] :
            ( ~ ( ~ ( ! [SY289: $i,SY290: $i] :
                        ( ~ ( in @ SY289 @ SV59 )
                        | ~ ( in @ SY290 @ SY287 )
                        | ( ( sK14_D @ SY288 @ SY287 @ SV59 )
                         != ( ordered_pair @ SY289 @ SY290 ) ) )
                    | ~ ( in @ ( sK14_D @ SY288 @ SY287 @ SV59 ) @ SY288 ) )
                | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SY288 @ SY287 @ SV59 ) @ SV59 )
                              | ~ ( in @ ( sK16_SY191 @ SY288 @ SY287 @ SV59 ) @ SY287 ) )
                        | ( ( sK14_D @ SY288 @ SY287 @ SV59 )
                         != ( ordered_pair @ ( sK15_SY189 @ SY288 @ SY287 @ SV59 ) @ ( sK16_SY191 @ SY288 @ SY287 @ SV59 ) ) ) )
                    | ( in @ ( sK14_D @ SY288 @ SY287 @ SV59 ) @ SY288 ) ) )
            | ( SY288
              = ( cartesian_product2 @ SV59 @ SY287 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[603]) ).

thf(679,plain,
    ! [SV59: $i] :
      ( ( ! [SY291: $i,SY292: $i] :
            ( ( SY292
             != ( cartesian_product2 @ SV59 @ SY291 ) )
            | ~ ( ~ ! [SY293: $i] :
                      ( ! [SY294: $i,SY295: $i] :
                          ( ~ ( in @ SY294 @ SV59 )
                          | ~ ( in @ SY295 @ SY291 )
                          | ( SY293
                           != ( ordered_pair @ SY294 @ SY295 ) ) )
                      | ( in @ SY293 @ SY292 ) )
                | ~ ! [SY296: $i] :
                      ( ~ ( in @ SY296 @ SY292 )
                      | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY296 @ SY292 @ SY291 @ SV59 ) @ SV59 )
                                | ~ ( in @ ( sK13_SY186 @ SY296 @ SY292 @ SY291 @ SV59 ) @ SY291 ) )
                          | ( SY296
                           != ( ordered_pair @ ( sK12_E @ SY296 @ SY292 @ SY291 @ SV59 ) @ ( sK13_SY186 @ SY296 @ SY292 @ SY291 @ SV59 ) ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[604]) ).

thf(680,plain,
    ! [SV61: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV61 )
        = $false )
      | ( ( disjoint @ ( singleton @ SV3 ) @ SV61 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[606]) ).

thf(681,plain,
    ! [SV63: $i,SV5: $i,SV137: $i] :
      ( ( ( ( in @ SV137 @ SV5 )
          | ( subset @ SV5 @ ( set_difference @ SV63 @ ( singleton @ SV137 ) ) ) )
        = $true )
      | ( ( subset @ SV5 @ SV63 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[607]) ).

thf(682,plain,
    ! [SV65: $i,SV98: $i,SV106: $i,SV7: $i] :
      ( ( ( SV7 = SV106 )
        = $true )
      | ( ( ( SV7 = SV98 )
          | ( ( unordered_pair @ SV7 @ SV65 )
           != ( unordered_pair @ SV98 @ SV106 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[609]) ).

thf(683,plain,
    ! [SV99: $i,SV68: $i,SV10: $i] :
      ( ( ( ~ ( subset @ SV10 @ SV68 ) )
        = $true )
      | ( ( ~ ( subset @ SV10 @ SV99 ) )
        = $true )
      | ( ( subset @ SV10 @ ( set_intersection2 @ SV68 @ SV99 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[611]) ).

thf(684,plain,
    ! [SV100: $i,SV69: $i,SV11: $i] :
      ( ( ( ~ ( subset @ SV11 @ SV69 ) )
        = $true )
      | ( ( ~ ( subset @ SV69 @ SV100 ) )
        = $true )
      | ( ( subset @ SV11 @ SV100 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[612]) ).

thf(685,plain,
    ! [SV70: $i,SV138: $i,SV12: $i] :
      ( ( ( subset @ ( set_intersection2 @ SV12 @ SV138 ) @ ( set_intersection2 @ SV70 @ SV138 ) )
        = $true )
      | ( ( subset @ SV12 @ SV70 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[613]) ).

thf(686,plain,
    ! [SV72: $i,SV139: $i,SV15: $i] :
      ( ( ( subset @ ( set_difference @ SV15 @ SV139 ) @ ( set_difference @ SV72 @ SV139 ) )
        = $true )
      | ( ( subset @ SV15 @ SV72 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[615]) ).

thf(687,plain,
    ! [SV78: $i,SV22: $i] :
      ( ( ( subset @ SV22 @ SV78 )
        = $false )
      | ( ( proper_subset @ SV78 @ SV22 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[617]) ).

thf(688,plain,
    ! [SV23: $i,SV101: $i,SV79: $i] :
      ( ( ( ~ ( disjoint @ SV79 @ SV101 ) )
        = $true )
      | ( ( ~ ( subset @ SV23 @ SV79 ) )
        = $true )
      | ( ( disjoint @ SV23 @ SV101 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[618]) ).

thf(689,plain,
    ! [SV102: $i,SV82: $i,SV27: $i] :
      ( ( ( ~ ( subset @ SV27 @ SV82 ) )
        = $true )
      | ( ( ~ ( subset @ SV102 @ SV82 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV27 @ SV102 ) @ SV82 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[620]) ).

thf(690,plain,
    ! [SV107: $i,SV83: $i,SV28: $i] :
      ( ( ( ( singleton @ SV28 )
          = ( unordered_pair @ SV83 @ SV107 ) )
        = $false )
      | ( ( SV28 = SV83 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[621]) ).

thf(691,plain,
    ! [SV103: $i,SV84: $i,SV29: $i] :
      ( ( ( ( singleton @ SV29 )
          = ( unordered_pair @ SV84 @ SV103 ) )
        = $false )
      | ( ( SV84 = SV103 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[622]) ).

thf(692,plain,
    ! [SV30: $i,SV85: $i] :
      ( ( ( in @ SV85 @ SV30 )
        = $false )
      | ( ( in @ SV30 @ SV85 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[623]) ).

thf(693,plain,
    ! [SV31: $i,SV86: $i] :
      ( ( ( proper_subset @ SV86 @ SV31 )
        = $false )
      | ( ( proper_subset @ SV31 @ SV86 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[624]) ).

thf(694,plain,
    ! [SV93: $i,SV49: $i] :
      ( ( ( in @ SV49 @ SV93 )
        = $false )
      | ( ( empty @ SV93 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[628]) ).

thf(695,plain,
    ! [SV94: $i,SV50: $i] :
      ( ( ( empty @ SV50 )
        = $false )
      | ( ( SV50 = SV94 )
        = $true )
      | ( ( ~ ( empty @ SV94 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[629]) ).

thf(696,plain,
    ! [SV140: $i,SV108: $i] :
      ( ( ( ( set_difference @ SV108 @ SV140 )
         != SV108 )
        | ( disjoint @ SV108 @ SV140 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[630]) ).

thf(697,plain,
    ! [SV141: $i,SV109: $i] :
      ( ( ~ ( disjoint @ SV109 @ SV141 )
        | ( ( set_difference @ SV109 @ SV141 )
          = SV109 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[631]) ).

thf(698,plain,
    ! [SV142: $i,SV110: $i] :
      ( ( ( ( set_difference @ SV110 @ SV142 )
         != empty_set )
        | ( subset @ SV110 @ SV142 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[632]) ).

thf(699,plain,
    ! [SV143: $i,SV111: $i] :
      ( ( ~ ( subset @ SV111 @ SV143 )
        | ( ( set_difference @ SV111 @ SV143 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[633]) ).

thf(700,plain,
    ! [SV51: $i,SV144: $i] :
      ( ( ! [SY358: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SY358 @ SV144 @ SV51 ) @ SY358 )
                          | ( ( sK18_D @ SY358 @ SV144 @ SV51 )
                           != SV51 ) )
                      | ~ ( ~ ( in @ ( sK18_D @ SY358 @ SV144 @ SV51 ) @ SY358 )
                          | ( ( sK18_D @ SY358 @ SV144 @ SV51 )
                           != SV144 ) ) )
                | ~ ( ( in @ ( sK18_D @ SY358 @ SV144 @ SV51 ) @ SY358 )
                    | ( ( sK18_D @ SY358 @ SV144 @ SV51 )
                      = SV51 )
                    | ( ( sK18_D @ SY358 @ SV144 @ SV51 )
                      = SV144 ) ) )
            | ( SY358
              = ( unordered_pair @ SV51 @ SV144 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[634]) ).

thf(701,plain,
    ! [SV145: $i,SV51: $i] :
      ( ( ! [SY359: $i] :
            ( ( SY359
             != ( unordered_pair @ SV51 @ SV145 ) )
            | ~ ( ~ ! [SY360: $i] :
                      ( ~ ( in @ SY360 @ SY359 )
                      | ( SY360 = SV51 )
                      | ( SY360 = SV145 ) )
                | ~ ~ ( ~ ! [SY245: $i] :
                            ( ( SY245 != SV51 )
                            | ( in @ SY245 @ SY359 ) )
                      | ~ ! [SY362: $i] :
                            ( ( SY362 != SV145 )
                            | ( in @ SY362 @ SY359 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[635]) ).

thf(702,plain,
    ! [SV52: $i,SV146: $i] :
      ( ( ! [SY363: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SY363 @ SV146 @ SV52 ) @ SV52 )
                    | ~ ( in @ ( sK10_D @ SY363 @ SV146 @ SV52 ) @ SV146 )
                    | ~ ( in @ ( sK10_D @ SY363 @ SV146 @ SV52 ) @ SY363 ) )
                | ~ ~ ( ~ ( ( in @ ( sK10_D @ SY363 @ SV146 @ SV52 ) @ SV52 )
                          | ( in @ ( sK10_D @ SY363 @ SV146 @ SV52 ) @ SY363 ) )
                      | ~ ( ( in @ ( sK10_D @ SY363 @ SV146 @ SV52 ) @ SV146 )
                          | ( in @ ( sK10_D @ SY363 @ SV146 @ SV52 ) @ SY363 ) ) ) )
            | ( SY363
              = ( set_intersection2 @ SV52 @ SV146 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[636]) ).

thf(703,plain,
    ! [SV147: $i,SV52: $i] :
      ( ( ! [SY364: $i] :
            ( ( SY364
             != ( set_intersection2 @ SV52 @ SV147 ) )
            | ~ ( ~ ! [SY365: $i] :
                      ( ~ ( in @ SY365 @ SV52 )
                      | ~ ( in @ SY365 @ SV147 )
                      | ( in @ SY365 @ SY364 ) )
                | ~ ~ ( ~ ! [SY252: $i] :
                            ( ~ ( in @ SY252 @ SY364 )
                            | ( in @ SY252 @ SV52 ) )
                      | ~ ! [SY367: $i] :
                            ( ~ ( in @ SY367 @ SY364 )
                            | ( in @ SY367 @ SV147 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[637]) ).

thf(704,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
                | ~ ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) )
            | ~ ( ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
                | ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) ) )
        | ( SV148
          = ( powerset @ SV112 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[638]) ).

thf(705,plain,
    ! [SV113: $i,SV149: $i] :
      ( ( ( SV149
         != ( powerset @ SV113 ) )
        | ~ ( ~ ! [SY368: $i] :
                  ( ~ ( in @ SY368 @ SV149 )
                  | ( subset @ SY368 @ SV113 ) )
            | ~ ! [SY369: $i] :
                  ( ~ ( subset @ SY369 @ SV113 )
                  | ( in @ SY369 @ SV149 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[639]) ).

thf(706,plain,
    ! [SV150: $i,SV114: $i] :
      ( ( ~ ( in @ SV114 @ SV150 )
        | ( subset @ ( singleton @ SV114 ) @ SV150 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[640]) ).

thf(707,plain,
    ! [SV151: $i,SV115: $i] :
      ( ( ~ ( subset @ ( singleton @ SV115 ) @ SV151 )
        | ( in @ SV115 @ SV151 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[641]) ).

thf(708,plain,
    ! [SV152: $i,SV116: $i] :
      ( ( ( SV116 = SV152 )
        | ~ ( subset @ SV116 @ SV152 )
        | ( proper_subset @ SV116 @ SV152 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[642]) ).

thf(709,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( proper_subset @ SX0 @ SX1 )
            | ( SX0 != SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[643]) ).

thf(710,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( proper_subset @ SX0 @ SX1 )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[643]) ).

thf(711,plain,
    ! [SV117: $i] :
      ( ( ( in @ ( sK20_B @ SV117 ) @ SV117 )
        = $true )
      | ( ( SV117 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[644]) ).

thf(712,plain,
    ! [SV118: $i] :
      ( ( ( ( SV118 != empty_set ) )
        = $true )
      | ( ( ! [SY330: $i] :
              ~ ( in @ SY330 @ SV118 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[645]) ).

thf(713,plain,
    ! [SV153: $i,SV119: $i] :
      ( ( ( disjoint @ SV119 @ SV153 )
        | ( in @ ( sK22_C @ SV153 @ SV119 ) @ ( set_intersection2 @ SV119 @ SV153 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[646]) ).

thf(714,plain,
    ! [SV154: $i,SV120: $i] :
      ( ( ! [SY370: $i] :
            ~ ( in @ SY370 @ ( set_intersection2 @ SV120 @ SV154 ) )
        | ~ ( disjoint @ SV120 @ SV154 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[647]) ).

thf(715,plain,
    ! [SV155: $i,SV53: $i] :
      ( ( ! [SY371: $i] :
            ( ~ ( in @ SV53 @ SY371 )
            | ~ ( in @ SV155 @ SY371 )
            | ( subset @ ( unordered_pair @ SV53 @ SV155 ) @ SY371 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[648]) ).

thf(716,plain,
    ! [SV53: $i] :
      ( ( ~ ! [SY256: $i,SY257: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV53 @ SY256 ) @ SY257 )
              | ( in @ SV53 @ SY257 ) )
        | ~ ! [SY258: $i,SY259: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV53 @ SY258 ) @ SY259 )
              | ( in @ SY258 @ SY259 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[649]) ).

thf(717,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ! [SY308: $i,SY309: $i] :
            ( ~ ( in @ SV54 @ SY308 )
            | ~ ( in @ SV95 @ SY309 )
            | ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY308 @ SY309 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[650]) ).

thf(718,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ~ ( ~ ! [SY310: $i] :
                  ( ! [SY311: $i] :
                      ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY310 @ SY311 ) )
                  | ( in @ SV54 @ SY310 ) )
            | ~ ! [SY312: $i,SY313: $i] :
                  ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY312 @ SY313 ) )
                  | ( in @ SV95 @ SY313 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[651]) ).

thf(719,plain,
    ! [SV156: $i,SV121: $i] :
      ( ( ~ ( subset @ SV121 @ SV156 )
        | ~ ( subset @ SV156 @ SV121 )
        | ( SV121 = SV156 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[652]) ).

thf(720,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 != SX1 )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[653]) ).

thf(721,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 != SX1 )
            | ( subset @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[653]) ).

thf(722,plain,
    ! [SV55: $i,SV157: $i] :
      ( ( ! [SY372: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SY372 @ SV157 @ SV55 ) @ SV55 )
                    | ( in @ ( sK6_D @ SY372 @ SV157 @ SV55 ) @ SV157 )
                    | ~ ( in @ ( sK6_D @ SY372 @ SV157 @ SV55 ) @ SY372 ) )
                | ~ ~ ( ~ ( ( in @ ( sK6_D @ SY372 @ SV157 @ SV55 ) @ SV55 )
                          | ( in @ ( sK6_D @ SY372 @ SV157 @ SV55 ) @ SY372 ) )
                      | ~ ( ~ ( in @ ( sK6_D @ SY372 @ SV157 @ SV55 ) @ SV157 )
                          | ( in @ ( sK6_D @ SY372 @ SV157 @ SV55 ) @ SY372 ) ) ) )
            | ( SY372
              = ( set_difference @ SV55 @ SV157 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[654]) ).

thf(723,plain,
    ! [SV158: $i,SV55: $i] :
      ( ( ! [SY373: $i] :
            ( ( SY373
             != ( set_difference @ SV55 @ SV158 ) )
            | ~ ( ~ ! [SY374: $i] :
                      ( ~ ( in @ SY374 @ SV55 )
                      | ( in @ SY374 @ SV158 )
                      | ( in @ SY374 @ SY373 ) )
                | ~ ~ ( ~ ! [SY272: $i] :
                            ( ~ ( in @ SY272 @ SY373 )
                            | ( in @ SY272 @ SV55 ) )
                      | ~ ! [SY376: $i] :
                            ( ~ ( in @ SY376 @ SY373 )
                            | ~ ( in @ SY376 @ SV158 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[655]) ).

thf(724,plain,
    ! [SV56: $i,SV159: $i] :
      ( ( ! [SY377: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SY377 @ SV159 @ SV56 ) @ SY377 )
                          | ~ ( in @ ( sK17_D @ SY377 @ SV159 @ SV56 ) @ SV56 ) )
                      | ~ ( ~ ( in @ ( sK17_D @ SY377 @ SV159 @ SV56 ) @ SY377 )
                          | ~ ( in @ ( sK17_D @ SY377 @ SV159 @ SV56 ) @ SV159 ) ) )
                | ~ ( ( in @ ( sK17_D @ SY377 @ SV159 @ SV56 ) @ SY377 )
                    | ( in @ ( sK17_D @ SY377 @ SV159 @ SV56 ) @ SV56 )
                    | ( in @ ( sK17_D @ SY377 @ SV159 @ SV56 ) @ SV159 ) ) )
            | ( SY377
              = ( set_union2 @ SV56 @ SV159 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[656]) ).

thf(725,plain,
    ! [SV160: $i,SV56: $i] :
      ( ( ! [SY378: $i] :
            ( ( SY378
             != ( set_union2 @ SV56 @ SV160 ) )
            | ~ ( ~ ! [SY379: $i] :
                      ( ~ ( in @ SY379 @ SY378 )
                      | ( in @ SY379 @ SV56 )
                      | ( in @ SY379 @ SV160 ) )
                | ~ ~ ( ~ ! [SY279: $i] :
                            ( ~ ( in @ SY279 @ SV56 )
                            | ( in @ SY279 @ SY378 ) )
                      | ~ ! [SY381: $i] :
                            ( ~ ( in @ SY381 @ SV160 )
                            | ( in @ SY381 @ SY378 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[657]) ).

thf(726,plain,
    ! [SV161: $i,SV122: $i] :
      ( ( ( ( set_intersection2 @ SV122 @ SV161 )
         != empty_set )
        | ( disjoint @ SV122 @ SV161 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[658]) ).

thf(727,plain,
    ! [SV162: $i,SV123: $i] :
      ( ( ~ ( disjoint @ SV123 @ SV162 )
        | ( ( set_intersection2 @ SV123 @ SV162 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[659]) ).

thf(728,plain,
    ( ( ~ ( ( sK1_A != empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[660]) ).

thf(729,plain,
    ( ( ~ ( ( sK1_A
           != ( singleton @ sK2_SY183 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[660]) ).

thf(730,plain,
    ! [SV163: $i,SV124: $i] :
      ( ( ~ ( subset @ SV124 @ ( singleton @ SV163 ) )
        | ( SV124 = empty_set )
        | ( SV124
          = ( singleton @ SV163 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[661]) ).

thf(731,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[662]) ).

thf(732,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0
             != ( singleton @ SX1 ) )
            | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[662]) ).

thf(733,plain,
    ! [SV164: $i,SV125: $i] :
      ( ( ~ ( in @ SV125 @ SV164 )
        | ( subset @ ( singleton @ SV125 ) @ SV164 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[663]) ).

thf(734,plain,
    ! [SV165: $i,SV126: $i] :
      ( ( ~ ( subset @ ( singleton @ SV126 ) @ SV165 )
        | ( in @ SV126 @ SV165 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[664]) ).

thf(735,plain,
    ! [SV127: $i,SV166: $i] :
      ( ( ~ ( ~ ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV127 )
            | ~ ~ ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV166 ) )
        | ( subset @ SV127 @ SV166 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[665]) ).

thf(736,plain,
    ! [SV167: $i,SV128: $i] :
      ( ( ~ ( subset @ SV128 @ SV167 )
        | ! [SY382: $i] :
            ( ~ ( in @ SY382 @ SV128 )
            | ( in @ SY382 @ SV167 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[666]) ).

thf(737,plain,
    ! [SV96: $i,SV57: $i] :
      ( ( ! [SY314: $i] :
            ( ! [SY315: $i] :
                ( ( ordered_pair @ SV57 @ SV96 )
               != ( ordered_pair @ SY314 @ SY315 ) )
            | ( SV57 = SY314 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[667]) ).

thf(738,plain,
    ! [SV96: $i,SV57: $i] :
      ( ( ! [SY316: $i,SY317: $i] :
            ( ( ( ordered_pair @ SV57 @ SV96 )
             != ( ordered_pair @ SY316 @ SY317 ) )
            | ( SV96 = SY317 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[668]) ).

thf(739,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
              | ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) ) )
        = $false )
      | ( ( SV58 = SV97 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[669]) ).

thf(740,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ( ~ ( ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
              | ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) ) )
        = $false )
      | ( ( SV58 = SV97 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[669]) ).

thf(741,plain,
    ! [SV168: $i,SV129: $i] :
      ( ( ( disjoint @ SV129 @ SV168 )
        | ~ ( ~ ( in @ ( sK23_C @ SV168 @ SV129 ) @ SV129 )
            | ~ ( in @ ( sK23_C @ SV168 @ SV129 ) @ SV168 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[670]) ).

thf(742,plain,
    ! [SV169: $i,SV130: $i] :
      ( ( ! [SY383: $i] :
            ( ~ ( in @ SY383 @ SV130 )
            | ~ ( in @ SY383 @ SV169 ) )
        | ~ ( disjoint @ SV130 @ SV169 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[671]) ).

thf(743,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ~ ( ~ ( ( ( sK21_C @ SV170 @ SV131 )
                 != SV131 )
                | ~ ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) )
            | ~ ( ( ( sK21_C @ SV170 @ SV131 )
                  = SV131 )
                | ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) ) )
        | ( SV170
          = ( singleton @ SV131 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[672]) ).

thf(744,plain,
    ! [SV132: $i,SV171: $i] :
      ( ( ( SV171
         != ( singleton @ SV132 ) )
        | ~ ( ~ ! [SY384: $i] :
                  ( ( SY384 != SV132 )
                  | ( in @ SY384 @ SV171 ) )
            | ~ ! [SY385: $i] :
                  ( ~ ( in @ SY385 @ SV171 )
                  | ( SY385 = SV132 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[673]) ).

thf(745,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ~ ( ~ ( ! [SY386: $i] :
                    ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SY386 )
                    | ~ ( in @ SY386 @ SV133 ) )
                | ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) )
            | ~ ( ~ ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ ( sK9_SY185 @ SV172 @ SV133 ) )
                    | ~ ( in @ ( sK9_SY185 @ SV172 @ SV133 ) @ SV133 ) )
                | ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) ) )
        | ( SV172
          = ( union @ SV133 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[674]) ).

thf(746,plain,
    ! [SV134: $i,SV173: $i] :
      ( ( ( SV173
         != ( union @ SV134 ) )
        | ~ ( ~ ! [SY387: $i] :
                  ( ! [SY354: $i] :
                      ( ~ ( in @ SY387 @ SY354 )
                      | ~ ( in @ SY354 @ SV134 ) )
                  | ( in @ SY387 @ SV173 ) )
            | ~ ! [SY389: $i] :
                  ( ~ ( in @ SY389 @ SV173 )
                  | ~ ( ~ ( in @ SY389 @ ( sK7_D @ SY389 @ SV173 @ SV134 ) )
                      | ~ ( in @ ( sK7_D @ SY389 @ SV173 @ SV134 ) @ SV134 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[675]) ).

thf(747,plain,
    ! [SV174: $i,SV135: $i] :
      ( ( ( ( set_difference @ SV135 @ SV174 )
         != empty_set )
        | ( subset @ SV135 @ SV174 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[676]) ).

thf(748,plain,
    ! [SV175: $i,SV136: $i] :
      ( ( ~ ( subset @ SV136 @ SV175 )
        | ( ( set_difference @ SV136 @ SV175 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[677]) ).

thf(749,plain,
    ! [SV176: $i,SV59: $i] :
      ( ( ! [SY390: $i] :
            ( ~ ( ~ ( ! [SY391: $i,SY392: $i] :
                        ( ~ ( in @ SY391 @ SV59 )
                        | ~ ( in @ SY392 @ SV176 )
                        | ( ( sK14_D @ SY390 @ SV176 @ SV59 )
                         != ( ordered_pair @ SY391 @ SY392 ) ) )
                    | ~ ( in @ ( sK14_D @ SY390 @ SV176 @ SV59 ) @ SY390 ) )
                | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SY390 @ SV176 @ SV59 ) @ SV59 )
                              | ~ ( in @ ( sK16_SY191 @ SY390 @ SV176 @ SV59 ) @ SV176 ) )
                        | ( ( sK14_D @ SY390 @ SV176 @ SV59 )
                         != ( ordered_pair @ ( sK15_SY189 @ SY390 @ SV176 @ SV59 ) @ ( sK16_SY191 @ SY390 @ SV176 @ SV59 ) ) ) )
                    | ( in @ ( sK14_D @ SY390 @ SV176 @ SV59 ) @ SY390 ) ) )
            | ( SY390
              = ( cartesian_product2 @ SV59 @ SV176 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[678]) ).

thf(750,plain,
    ! [SV177: $i,SV59: $i] :
      ( ( ! [SY393: $i] :
            ( ( SY393
             != ( cartesian_product2 @ SV59 @ SV177 ) )
            | ~ ( ~ ! [SY394: $i] :
                      ( ! [SY395: $i,SY396: $i] :
                          ( ~ ( in @ SY395 @ SV59 )
                          | ~ ( in @ SY396 @ SV177 )
                          | ( SY394
                           != ( ordered_pair @ SY395 @ SY396 ) ) )
                      | ( in @ SY394 @ SY393 ) )
                | ~ ! [SY397: $i] :
                      ( ~ ( in @ SY397 @ SY393 )
                      | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY397 @ SY393 @ SV177 @ SV59 ) @ SV59 )
                                | ~ ( in @ ( sK13_SY186 @ SY397 @ SY393 @ SV177 @ SV59 ) @ SV177 ) )
                          | ( SY397
                           != ( ordered_pair @ ( sK12_E @ SY397 @ SY393 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SY397 @ SY393 @ SV177 @ SV59 ) ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[679]) ).

thf(751,plain,
    ! [SV63: $i,SV5: $i,SV137: $i] :
      ( ( ( in @ SV137 @ SV5 )
        = $true )
      | ( ( subset @ SV5 @ ( set_difference @ SV63 @ ( singleton @ SV137 ) ) )
        = $true )
      | ( ( subset @ SV5 @ SV63 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[681]) ).

thf(752,plain,
    ! [SV106: $i,SV65: $i,SV98: $i,SV7: $i] :
      ( ( ( SV7 = SV98 )
        = $true )
      | ( ( ( ( unordered_pair @ SV7 @ SV65 )
           != ( unordered_pair @ SV98 @ SV106 ) ) )
        = $true )
      | ( ( SV7 = SV106 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[682]) ).

thf(753,plain,
    ! [SV99: $i,SV68: $i,SV10: $i] :
      ( ( ( subset @ SV10 @ SV68 )
        = $false )
      | ( ( ~ ( subset @ SV10 @ SV99 ) )
        = $true )
      | ( ( subset @ SV10 @ ( set_intersection2 @ SV68 @ SV99 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[683]) ).

thf(754,plain,
    ! [SV100: $i,SV69: $i,SV11: $i] :
      ( ( ( subset @ SV11 @ SV69 )
        = $false )
      | ( ( ~ ( subset @ SV69 @ SV100 ) )
        = $true )
      | ( ( subset @ SV11 @ SV100 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[684]) ).

thf(755,plain,
    ! [SV23: $i,SV101: $i,SV79: $i] :
      ( ( ( disjoint @ SV79 @ SV101 )
        = $false )
      | ( ( ~ ( subset @ SV23 @ SV79 ) )
        = $true )
      | ( ( disjoint @ SV23 @ SV101 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[688]) ).

thf(756,plain,
    ! [SV102: $i,SV82: $i,SV27: $i] :
      ( ( ( subset @ SV27 @ SV82 )
        = $false )
      | ( ( ~ ( subset @ SV102 @ SV82 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV27 @ SV102 ) @ SV82 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[689]) ).

thf(757,plain,
    ! [SV50: $i,SV94: $i] :
      ( ( ( empty @ SV94 )
        = $false )
      | ( ( SV50 = SV94 )
        = $true )
      | ( ( empty @ SV50 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[695]) ).

thf(758,plain,
    ! [SV140: $i,SV108: $i] :
      ( ( ( ( ( set_difference @ SV108 @ SV140 )
           != SV108 ) )
        = $true )
      | ( ( disjoint @ SV108 @ SV140 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[696]) ).

thf(759,plain,
    ! [SV141: $i,SV109: $i] :
      ( ( ( ~ ( disjoint @ SV109 @ SV141 ) )
        = $true )
      | ( ( ( set_difference @ SV109 @ SV141 )
          = SV109 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[697]) ).

thf(760,plain,
    ! [SV142: $i,SV110: $i] :
      ( ( ( ( ( set_difference @ SV110 @ SV142 )
           != empty_set ) )
        = $true )
      | ( ( subset @ SV110 @ SV142 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[698]) ).

thf(761,plain,
    ! [SV143: $i,SV111: $i] :
      ( ( ( ~ ( subset @ SV111 @ SV143 ) )
        = $true )
      | ( ( ( set_difference @ SV111 @ SV143 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[699]) ).

thf(762,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                      | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                       != SV51 ) )
                  | ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                      | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                       != SV144 ) ) )
            | ~ ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                  = SV51 )
                | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                  = SV144 ) ) )
        | ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[700]) ).

thf(763,plain,
    ! [SV145: $i,SV51: $i,SV179: $i] :
      ( ( ( SV179
         != ( unordered_pair @ SV51 @ SV145 ) )
        | ~ ( ~ ! [SY398: $i] :
                  ( ~ ( in @ SY398 @ SV179 )
                  | ( SY398 = SV51 )
                  | ( SY398 = SV145 ) )
            | ~ ~ ( ~ ! [SY399: $i] :
                        ( ( SY399 != SV51 )
                        | ( in @ SY399 @ SV179 ) )
                  | ~ ! [SY400: $i] :
                        ( ( SY400 != SV145 )
                        | ( in @ SY400 @ SV179 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[701]) ).

thf(764,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
                | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
                | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
            | ~ ~ ( ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
                      | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
                  | ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
                      | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) ) ) )
        | ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[702]) ).

thf(765,plain,
    ! [SV147: $i,SV52: $i,SV181: $i] :
      ( ( ( SV181
         != ( set_intersection2 @ SV52 @ SV147 ) )
        | ~ ( ~ ! [SY401: $i] :
                  ( ~ ( in @ SY401 @ SV52 )
                  | ~ ( in @ SY401 @ SV147 )
                  | ( in @ SY401 @ SV181 ) )
            | ~ ~ ( ~ ! [SY402: $i] :
                        ( ~ ( in @ SY402 @ SV181 )
                        | ( in @ SY402 @ SV52 ) )
                  | ~ ! [SY403: $i] :
                        ( ~ ( in @ SY403 @ SV181 )
                        | ( in @ SY403 @ SV147 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[703]) ).

thf(766,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
                  | ~ ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) )
              | ~ ( ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
                  | ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) ) ) )
        = $true )
      | ( ( SV148
          = ( powerset @ SV112 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[704]) ).

thf(767,plain,
    ! [SV113: $i,SV149: $i] :
      ( ( ( ( SV149
           != ( powerset @ SV113 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY368: $i] :
                    ( ~ ( in @ SY368 @ SV149 )
                    | ( subset @ SY368 @ SV113 ) )
              | ~ ! [SY369: $i] :
                    ( ~ ( subset @ SY369 @ SV113 )
                    | ( in @ SY369 @ SV149 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[705]) ).

thf(768,plain,
    ! [SV150: $i,SV114: $i] :
      ( ( ( ~ ( in @ SV114 @ SV150 ) )
        = $true )
      | ( ( subset @ ( singleton @ SV114 ) @ SV150 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[706]) ).

thf(769,plain,
    ! [SV151: $i,SV115: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV115 ) @ SV151 ) )
        = $true )
      | ( ( in @ SV115 @ SV151 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[707]) ).

thf(770,plain,
    ! [SV152: $i,SV116: $i] :
      ( ( ( ( SV116 = SV152 )
          | ~ ( subset @ SV116 @ SV152 ) )
        = $true )
      | ( ( proper_subset @ SV116 @ SV152 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[708]) ).

thf(771,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( proper_subset @ SX0 @ SX1 )
          | ( SX0 != SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[709]) ).

thf(772,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( proper_subset @ SX0 @ SX1 )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[710]) ).

thf(773,plain,
    ! [SV118: $i] :
      ( ( ( SV118 = empty_set )
        = $false )
      | ( ( ! [SY330: $i] :
              ~ ( in @ SY330 @ SV118 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[712]) ).

thf(774,plain,
    ! [SV153: $i,SV119: $i] :
      ( ( ( disjoint @ SV119 @ SV153 )
        = $true )
      | ( ( in @ ( sK22_C @ SV153 @ SV119 ) @ ( set_intersection2 @ SV119 @ SV153 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[713]) ).

thf(775,plain,
    ! [SV154: $i,SV120: $i] :
      ( ( ( ! [SY370: $i] :
              ~ ( in @ SY370 @ ( set_intersection2 @ SV120 @ SV154 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV120 @ SV154 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[714]) ).

thf(776,plain,
    ! [SV155: $i,SV182: $i,SV53: $i] :
      ( ( ~ ( in @ SV53 @ SV182 )
        | ~ ( in @ SV155 @ SV182 )
        | ( subset @ ( unordered_pair @ SV53 @ SV155 ) @ SV182 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[715]) ).

thf(777,plain,
    ! [SV53: $i] :
      ( ( ~ ! [SY256: $i,SY257: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV53 @ SY256 ) @ SY257 )
              | ( in @ SV53 @ SY257 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[716]) ).

thf(778,plain,
    ! [SV53: $i] :
      ( ( ~ ! [SY258: $i,SY259: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV53 @ SY258 ) @ SY259 )
              | ( in @ SY258 @ SY259 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[716]) ).

thf(779,plain,
    ! [SV95: $i,SV183: $i,SV54: $i] :
      ( ( ! [SY404: $i] :
            ( ~ ( in @ SV54 @ SV183 )
            | ~ ( in @ SV95 @ SY404 )
            | ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV183 @ SY404 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[717]) ).

thf(780,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ~ ! [SY310: $i] :
              ( ! [SY311: $i] :
                  ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY310 @ SY311 ) )
              | ( in @ SV54 @ SY310 ) )
        | ~ ! [SY312: $i,SY313: $i] :
              ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY312 @ SY313 ) )
              | ( in @ SV95 @ SY313 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[718]) ).

thf(781,plain,
    ! [SV156: $i,SV121: $i] :
      ( ( ( ~ ( subset @ SV121 @ SV156 )
          | ~ ( subset @ SV156 @ SV121 ) )
        = $true )
      | ( ( SV121 = SV156 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[719]) ).

thf(782,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0 != SX1 )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[720]) ).

thf(783,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0 != SX1 )
          | ( subset @ SX1 @ SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[721]) ).

thf(784,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
                | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
                | ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
            | ~ ~ ( ~ ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
                      | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
                  | ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
                      | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) ) ) )
        | ( SV184
          = ( set_difference @ SV55 @ SV157 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[722]) ).

thf(785,plain,
    ! [SV158: $i,SV55: $i,SV185: $i] :
      ( ( ( SV185
         != ( set_difference @ SV55 @ SV158 ) )
        | ~ ( ~ ! [SY405: $i] :
                  ( ~ ( in @ SY405 @ SV55 )
                  | ( in @ SY405 @ SV158 )
                  | ( in @ SY405 @ SV185 ) )
            | ~ ~ ( ~ ! [SY406: $i] :
                        ( ~ ( in @ SY406 @ SV185 )
                        | ( in @ SY406 @ SV55 ) )
                  | ~ ! [SY407: $i] :
                        ( ~ ( in @ SY407 @ SV185 )
                        | ~ ( in @ SY407 @ SV158 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[723]) ).

thf(786,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                      | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 ) )
                  | ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                      | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) )
            | ~ ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 )
                | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) )
        | ( SV186
          = ( set_union2 @ SV56 @ SV159 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[724]) ).

thf(787,plain,
    ! [SV160: $i,SV56: $i,SV187: $i] :
      ( ( ( SV187
         != ( set_union2 @ SV56 @ SV160 ) )
        | ~ ( ~ ! [SY408: $i] :
                  ( ~ ( in @ SY408 @ SV187 )
                  | ( in @ SY408 @ SV56 )
                  | ( in @ SY408 @ SV160 ) )
            | ~ ~ ( ~ ! [SY409: $i] :
                        ( ~ ( in @ SY409 @ SV56 )
                        | ( in @ SY409 @ SV187 ) )
                  | ~ ! [SY410: $i] :
                        ( ~ ( in @ SY410 @ SV160 )
                        | ( in @ SY410 @ SV187 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[725]) ).

thf(788,plain,
    ! [SV161: $i,SV122: $i] :
      ( ( ( ( ( set_intersection2 @ SV122 @ SV161 )
           != empty_set ) )
        = $true )
      | ( ( disjoint @ SV122 @ SV161 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[726]) ).

thf(789,plain,
    ! [SV162: $i,SV123: $i] :
      ( ( ( ~ ( disjoint @ SV123 @ SV162 ) )
        = $true )
      | ( ( ( set_intersection2 @ SV123 @ SV162 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[727]) ).

thf(790,plain,
    ( ( ( sK1_A != empty_set ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[728]) ).

thf(791,plain,
    ( ( ( sK1_A
       != ( singleton @ sK2_SY183 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[729]) ).

thf(792,plain,
    ! [SV163: $i,SV124: $i] :
      ( ( ( ~ ( subset @ SV124 @ ( singleton @ SV163 ) ) )
        = $true )
      | ( ( ( SV124 = empty_set )
          | ( SV124
            = ( singleton @ SV163 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[730]) ).

thf(793,plain,
    ( ( ! [SX0: $i] :
          ( ( SX0 != empty_set )
          | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[731]) ).

thf(794,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0
           != ( singleton @ SX1 ) )
          | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[732]) ).

thf(795,plain,
    ! [SV164: $i,SV125: $i] :
      ( ( ( ~ ( in @ SV125 @ SV164 ) )
        = $true )
      | ( ( subset @ ( singleton @ SV125 ) @ SV164 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[733]) ).

thf(796,plain,
    ! [SV165: $i,SV126: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV126 ) @ SV165 ) )
        = $true )
      | ( ( in @ SV126 @ SV165 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[734]) ).

thf(797,plain,
    ! [SV127: $i,SV166: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV127 )
              | ~ ~ ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV166 ) ) )
        = $true )
      | ( ( subset @ SV127 @ SV166 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[735]) ).

thf(798,plain,
    ! [SV167: $i,SV128: $i] :
      ( ( ( ~ ( subset @ SV128 @ SV167 ) )
        = $true )
      | ( ( ! [SY382: $i] :
              ( ~ ( in @ SY382 @ SV128 )
              | ( in @ SY382 @ SV167 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[736]) ).

thf(799,plain,
    ! [SV188: $i,SV96: $i,SV57: $i] :
      ( ( ! [SY411: $i] :
            ( ( ordered_pair @ SV57 @ SV96 )
           != ( ordered_pair @ SV188 @ SY411 ) )
        | ( SV57 = SV188 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[737]) ).

thf(800,plain,
    ! [SV189: $i,SV96: $i,SV57: $i] :
      ( ( ! [SY412: $i] :
            ( ( ( ordered_pair @ SV57 @ SV96 )
             != ( ordered_pair @ SV189 @ SY412 ) )
            | ( SV96 = SY412 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[738]) ).

thf(801,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ( ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
          | ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) )
        = $true )
      | ( ( SV58 = SV97 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[739]) ).

thf(802,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ( ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
          | ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) )
        = $true )
      | ( ( SV58 = SV97 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[740]) ).

thf(803,plain,
    ! [SV168: $i,SV129: $i] :
      ( ( ( disjoint @ SV129 @ SV168 )
        = $true )
      | ( ( ~ ( ~ ( in @ ( sK23_C @ SV168 @ SV129 ) @ SV129 )
              | ~ ( in @ ( sK23_C @ SV168 @ SV129 ) @ SV168 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[741]) ).

thf(804,plain,
    ! [SV169: $i,SV130: $i] :
      ( ( ( ! [SY383: $i] :
              ( ~ ( in @ SY383 @ SV130 )
              | ~ ( in @ SY383 @ SV169 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV130 @ SV169 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[742]) ).

thf(805,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ( ~ ( ~ ( ( ( sK21_C @ SV170 @ SV131 )
                   != SV131 )
                  | ~ ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) )
              | ~ ( ( ( sK21_C @ SV170 @ SV131 )
                    = SV131 )
                  | ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) ) ) )
        = $true )
      | ( ( SV170
          = ( singleton @ SV131 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[743]) ).

thf(806,plain,
    ! [SV132: $i,SV171: $i] :
      ( ( ( ( SV171
           != ( singleton @ SV132 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY384: $i] :
                    ( ( SY384 != SV132 )
                    | ( in @ SY384 @ SV171 ) )
              | ~ ! [SY385: $i] :
                    ( ~ ( in @ SY385 @ SV171 )
                    | ( SY385 = SV132 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[744]) ).

thf(807,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ~ ( ~ ( ! [SY386: $i] :
                      ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SY386 )
                      | ~ ( in @ SY386 @ SV133 ) )
                  | ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) )
              | ~ ( ~ ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ ( sK9_SY185 @ SV172 @ SV133 ) )
                      | ~ ( in @ ( sK9_SY185 @ SV172 @ SV133 ) @ SV133 ) )
                  | ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) ) ) )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[745]) ).

thf(808,plain,
    ! [SV134: $i,SV173: $i] :
      ( ( ( ( SV173
           != ( union @ SV134 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY387: $i] :
                    ( ! [SY354: $i] :
                        ( ~ ( in @ SY387 @ SY354 )
                        | ~ ( in @ SY354 @ SV134 ) )
                    | ( in @ SY387 @ SV173 ) )
              | ~ ! [SY389: $i] :
                    ( ~ ( in @ SY389 @ SV173 )
                    | ~ ( ~ ( in @ SY389 @ ( sK7_D @ SY389 @ SV173 @ SV134 ) )
                        | ~ ( in @ ( sK7_D @ SY389 @ SV173 @ SV134 ) @ SV134 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[746]) ).

thf(809,plain,
    ! [SV174: $i,SV135: $i] :
      ( ( ( ( ( set_difference @ SV135 @ SV174 )
           != empty_set ) )
        = $true )
      | ( ( subset @ SV135 @ SV174 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[747]) ).

thf(810,plain,
    ! [SV175: $i,SV136: $i] :
      ( ( ( ~ ( subset @ SV136 @ SV175 ) )
        = $true )
      | ( ( ( set_difference @ SV136 @ SV175 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[748]) ).

thf(811,plain,
    ! [SV190: $i,SV176: $i,SV59: $i] :
      ( ( ~ ( ~ ( ! [SY413: $i,SY414: $i] :
                    ( ~ ( in @ SY413 @ SV59 )
                    | ~ ( in @ SY414 @ SV176 )
                    | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
                     != ( ordered_pair @ SY413 @ SY414 ) ) )
                | ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
            | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
                          | ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) )
                    | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
                     != ( ordered_pair @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) ) ) )
                | ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) ) )
        | ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[749]) ).

thf(812,plain,
    ! [SV177: $i,SV59: $i,SV191: $i] :
      ( ( ( SV191
         != ( cartesian_product2 @ SV59 @ SV177 ) )
        | ~ ( ~ ! [SY415: $i] :
                  ( ! [SY395: $i,SY396: $i] :
                      ( ~ ( in @ SY395 @ SV59 )
                      | ~ ( in @ SY396 @ SV177 )
                      | ( SY415
                       != ( ordered_pair @ SY395 @ SY396 ) ) )
                  | ( in @ SY415 @ SV191 ) )
            | ~ ! [SY418: $i] :
                  ( ~ ( in @ SY418 @ SV191 )
                  | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                            | ~ ( in @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
                      | ( SY418
                       != ( ordered_pair @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[750]) ).

thf(813,plain,
    ! [SV106: $i,SV98: $i,SV65: $i,SV7: $i] :
      ( ( ( ( unordered_pair @ SV7 @ SV65 )
          = ( unordered_pair @ SV98 @ SV106 ) )
        = $false )
      | ( ( SV7 = SV98 )
        = $true )
      | ( ( SV7 = SV106 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[752]) ).

thf(814,plain,
    ! [SV68: $i,SV99: $i,SV10: $i] :
      ( ( ( subset @ SV10 @ SV99 )
        = $false )
      | ( ( subset @ SV10 @ SV68 )
        = $false )
      | ( ( subset @ SV10 @ ( set_intersection2 @ SV68 @ SV99 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[753]) ).

thf(815,plain,
    ! [SV11: $i,SV100: $i,SV69: $i] :
      ( ( ( subset @ SV69 @ SV100 )
        = $false )
      | ( ( subset @ SV11 @ SV69 )
        = $false )
      | ( ( subset @ SV11 @ SV100 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[754]) ).

thf(816,plain,
    ! [SV101: $i,SV79: $i,SV23: $i] :
      ( ( ( subset @ SV23 @ SV79 )
        = $false )
      | ( ( disjoint @ SV79 @ SV101 )
        = $false )
      | ( ( disjoint @ SV23 @ SV101 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[755]) ).

thf(817,plain,
    ! [SV27: $i,SV82: $i,SV102: $i] :
      ( ( ( subset @ SV102 @ SV82 )
        = $false )
      | ( ( subset @ SV27 @ SV82 )
        = $false )
      | ( ( subset @ ( set_union2 @ SV27 @ SV102 ) @ SV82 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[756]) ).

thf(818,plain,
    ! [SV140: $i,SV108: $i] :
      ( ( ( ( set_difference @ SV108 @ SV140 )
          = SV108 )
        = $false )
      | ( ( disjoint @ SV108 @ SV140 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[758]) ).

thf(819,plain,
    ! [SV141: $i,SV109: $i] :
      ( ( ( disjoint @ SV109 @ SV141 )
        = $false )
      | ( ( ( set_difference @ SV109 @ SV141 )
          = SV109 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[759]) ).

thf(820,plain,
    ! [SV142: $i,SV110: $i] :
      ( ( ( ( set_difference @ SV110 @ SV142 )
          = empty_set )
        = $false )
      | ( ( subset @ SV110 @ SV142 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[760]) ).

thf(821,plain,
    ! [SV143: $i,SV111: $i] :
      ( ( ( subset @ SV111 @ SV143 )
        = $false )
      | ( ( ( set_difference @ SV111 @ SV143 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[761]) ).

thf(822,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                        | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                         != SV51 ) )
                    | ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                        | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                         != SV144 ) ) )
              | ~ ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                  | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                    = SV51 )
                  | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                    = SV144 ) ) ) )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[762]) ).

thf(823,plain,
    ! [SV145: $i,SV51: $i,SV179: $i] :
      ( ( ( ( SV179
           != ( unordered_pair @ SV51 @ SV145 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY398: $i] :
                    ( ~ ( in @ SY398 @ SV179 )
                    | ( SY398 = SV51 )
                    | ( SY398 = SV145 ) )
              | ~ ~ ( ~ ! [SY399: $i] :
                          ( ( SY399 != SV51 )
                          | ( in @ SY399 @ SV179 ) )
                    | ~ ! [SY400: $i] :
                          ( ( SY400 != SV145 )
                          | ( in @ SY400 @ SV179 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[763]) ).

thf(824,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
                  | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
                  | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
              | ~ ~ ( ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
                        | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
                    | ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
                        | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) ) ) ) )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[764]) ).

thf(825,plain,
    ! [SV147: $i,SV52: $i,SV181: $i] :
      ( ( ( ( SV181
           != ( set_intersection2 @ SV52 @ SV147 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY401: $i] :
                    ( ~ ( in @ SY401 @ SV52 )
                    | ~ ( in @ SY401 @ SV147 )
                    | ( in @ SY401 @ SV181 ) )
              | ~ ~ ( ~ ! [SY402: $i] :
                          ( ~ ( in @ SY402 @ SV181 )
                          | ( in @ SY402 @ SV52 ) )
                    | ~ ! [SY403: $i] :
                          ( ~ ( in @ SY403 @ SV181 )
                          | ( in @ SY403 @ SV147 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[765]) ).

thf(826,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
              | ~ ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) )
          | ~ ( ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
              | ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) ) )
        = $false )
      | ( ( SV148
          = ( powerset @ SV112 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[766]) ).

thf(827,plain,
    ! [SV113: $i,SV149: $i] :
      ( ( ( SV149
          = ( powerset @ SV113 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY368: $i] :
                    ( ~ ( in @ SY368 @ SV149 )
                    | ( subset @ SY368 @ SV113 ) )
              | ~ ! [SY369: $i] :
                    ( ~ ( subset @ SY369 @ SV113 )
                    | ( in @ SY369 @ SV149 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[767]) ).

thf(828,plain,
    ! [SV150: $i,SV114: $i] :
      ( ( ( in @ SV114 @ SV150 )
        = $false )
      | ( ( subset @ ( singleton @ SV114 ) @ SV150 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[768]) ).

thf(829,plain,
    ! [SV151: $i,SV115: $i] :
      ( ( ( subset @ ( singleton @ SV115 ) @ SV151 )
        = $false )
      | ( ( in @ SV115 @ SV151 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[769]) ).

thf(830,plain,
    ! [SV152: $i,SV116: $i] :
      ( ( ( SV116 = SV152 )
        = $true )
      | ( ( ~ ( subset @ SV116 @ SV152 ) )
        = $true )
      | ( ( proper_subset @ SV116 @ SV152 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[770]) ).

thf(831,plain,
    ! [SV192: $i] :
      ( ( ! [SY419: $i] :
            ( ~ ( proper_subset @ SV192 @ SY419 )
            | ( SV192 != SY419 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[771]) ).

thf(832,plain,
    ! [SV193: $i] :
      ( ( ! [SY420: $i] :
            ( ~ ( proper_subset @ SV193 @ SY420 )
            | ( subset @ SV193 @ SY420 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[772]) ).

thf(833,plain,
    ! [SV118: $i,SV194: $i] :
      ( ( ( ~ ( in @ SV194 @ SV118 ) )
        = $true )
      | ( ( SV118 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[773]) ).

thf(834,plain,
    ! [SV154: $i,SV120: $i,SV195: $i] :
      ( ( ( ~ ( in @ SV195 @ ( set_intersection2 @ SV120 @ SV154 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV120 @ SV154 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[775]) ).

thf(835,plain,
    ! [SV155: $i,SV182: $i,SV53: $i] :
      ( ( ( ~ ( in @ SV53 @ SV182 )
          | ~ ( in @ SV155 @ SV182 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV53 @ SV155 ) @ SV182 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[776]) ).

thf(836,plain,
    ! [SV53: $i] :
      ( ( ! [SY256: $i,SY257: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV53 @ SY256 ) @ SY257 )
            | ( in @ SV53 @ SY257 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[777]) ).

thf(837,plain,
    ! [SV53: $i] :
      ( ( ! [SY258: $i,SY259: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV53 @ SY258 ) @ SY259 )
            | ( in @ SY258 @ SY259 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[778]) ).

thf(838,plain,
    ! [SV196: $i,SV95: $i,SV183: $i,SV54: $i] :
      ( ( ~ ( in @ SV54 @ SV183 )
        | ~ ( in @ SV95 @ SV196 )
        | ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV183 @ SV196 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[779]) ).

thf(839,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ~ ! [SY310: $i] :
              ( ! [SY311: $i] :
                  ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY310 @ SY311 ) )
              | ( in @ SV54 @ SY310 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[780]) ).

thf(840,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ~ ! [SY312: $i,SY313: $i] :
              ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY312 @ SY313 ) )
              | ( in @ SV95 @ SY313 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[780]) ).

thf(841,plain,
    ! [SV156: $i,SV121: $i] :
      ( ( ( ~ ( subset @ SV121 @ SV156 ) )
        = $true )
      | ( ( ~ ( subset @ SV156 @ SV121 ) )
        = $true )
      | ( ( SV121 = SV156 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[781]) ).

thf(842,plain,
    ! [SV197: $i] :
      ( ( ! [SY421: $i] :
            ( ( SV197 != SY421 )
            | ( subset @ SV197 @ SY421 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[782]) ).

thf(843,plain,
    ! [SV198: $i] :
      ( ( ! [SY422: $i] :
            ( ( SV198 != SY422 )
            | ( subset @ SY422 @ SV198 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[783]) ).

thf(844,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
                  | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
                  | ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
              | ~ ~ ( ~ ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
                        | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
                    | ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
                        | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) ) ) ) )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[784]) ).

thf(845,plain,
    ! [SV158: $i,SV55: $i,SV185: $i] :
      ( ( ( ( SV185
           != ( set_difference @ SV55 @ SV158 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY405: $i] :
                    ( ~ ( in @ SY405 @ SV55 )
                    | ( in @ SY405 @ SV158 )
                    | ( in @ SY405 @ SV185 ) )
              | ~ ~ ( ~ ! [SY406: $i] :
                          ( ~ ( in @ SY406 @ SV185 )
                          | ( in @ SY406 @ SV55 ) )
                    | ~ ! [SY407: $i] :
                          ( ~ ( in @ SY407 @ SV185 )
                          | ~ ( in @ SY407 @ SV158 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[785]) ).

thf(846,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                        | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 ) )
                    | ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                        | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) )
              | ~ ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                  | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 )
                  | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) ) )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[786]) ).

thf(847,plain,
    ! [SV160: $i,SV56: $i,SV187: $i] :
      ( ( ( ( SV187
           != ( set_union2 @ SV56 @ SV160 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY408: $i] :
                    ( ~ ( in @ SY408 @ SV187 )
                    | ( in @ SY408 @ SV56 )
                    | ( in @ SY408 @ SV160 ) )
              | ~ ~ ( ~ ! [SY409: $i] :
                          ( ~ ( in @ SY409 @ SV56 )
                          | ( in @ SY409 @ SV187 ) )
                    | ~ ! [SY410: $i] :
                          ( ~ ( in @ SY410 @ SV160 )
                          | ( in @ SY410 @ SV187 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[787]) ).

thf(848,plain,
    ! [SV161: $i,SV122: $i] :
      ( ( ( ( set_intersection2 @ SV122 @ SV161 )
          = empty_set )
        = $false )
      | ( ( disjoint @ SV122 @ SV161 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[788]) ).

thf(849,plain,
    ! [SV162: $i,SV123: $i] :
      ( ( ( disjoint @ SV123 @ SV162 )
        = $false )
      | ( ( ( set_intersection2 @ SV123 @ SV162 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[789]) ).

thf(850,plain,
    ( ( sK1_A = empty_set )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[790]) ).

thf(851,plain,
    ( ( sK1_A
      = ( singleton @ sK2_SY183 ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[791]) ).

thf(852,plain,
    ! [SV163: $i,SV124: $i] :
      ( ( ( subset @ SV124 @ ( singleton @ SV163 ) )
        = $false )
      | ( ( ( SV124 = empty_set )
          | ( SV124
            = ( singleton @ SV163 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[792]) ).

thf(853,plain,
    ! [SV199: $i] :
      ( ( ( SV199 != empty_set )
        | ! [SY423: $i] : ( subset @ SV199 @ ( singleton @ SY423 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[793]) ).

thf(854,plain,
    ! [SV200: $i] :
      ( ( ! [SY424: $i] :
            ( ( SV200
             != ( singleton @ SY424 ) )
            | ( subset @ SV200 @ ( singleton @ SY424 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[794]) ).

thf(855,plain,
    ! [SV164: $i,SV125: $i] :
      ( ( ( in @ SV125 @ SV164 )
        = $false )
      | ( ( subset @ ( singleton @ SV125 ) @ SV164 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[795]) ).

thf(856,plain,
    ! [SV165: $i,SV126: $i] :
      ( ( ( subset @ ( singleton @ SV126 ) @ SV165 )
        = $false )
      | ( ( in @ SV126 @ SV165 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[796]) ).

thf(857,plain,
    ! [SV127: $i,SV166: $i] :
      ( ( ( ~ ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV127 )
          | ~ ~ ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV166 ) )
        = $false )
      | ( ( subset @ SV127 @ SV166 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[797]) ).

thf(858,plain,
    ! [SV167: $i,SV128: $i] :
      ( ( ( subset @ SV128 @ SV167 )
        = $false )
      | ( ( ! [SY382: $i] :
              ( ~ ( in @ SY382 @ SV128 )
              | ( in @ SY382 @ SV167 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[798]) ).

thf(859,plain,
    ! [SV188: $i,SV96: $i,SV57: $i] :
      ( ( ( ! [SY411: $i] :
              ( ( ordered_pair @ SV57 @ SV96 )
             != ( ordered_pair @ SV188 @ SY411 ) ) )
        = $true )
      | ( ( SV57 = SV188 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[799]) ).

thf(860,plain,
    ! [SV201: $i,SV189: $i,SV96: $i,SV57: $i] :
      ( ( ( ( ordered_pair @ SV57 @ SV96 )
         != ( ordered_pair @ SV189 @ SV201 ) )
        | ( SV96 = SV201 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[800]) ).

thf(861,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ( ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 ) )
        = $true )
      | ( ( ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) )
        = $true )
      | ( ( SV58 = SV97 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[801]) ).

thf(862,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
        = $true )
      | ( ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 )
        = $true )
      | ( ( SV58 = SV97 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[802]) ).

thf(863,plain,
    ! [SV129: $i,SV168: $i] :
      ( ( ( ~ ( in @ ( sK23_C @ SV168 @ SV129 ) @ SV129 )
          | ~ ( in @ ( sK23_C @ SV168 @ SV129 ) @ SV168 ) )
        = $false )
      | ( ( disjoint @ SV129 @ SV168 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[803]) ).

thf(864,plain,
    ! [SV169: $i,SV130: $i,SV202: $i] :
      ( ( ( ~ ( in @ SV202 @ SV130 )
          | ~ ( in @ SV202 @ SV169 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV130 @ SV169 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[804]) ).

thf(865,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ( ~ ( ( ( sK21_C @ SV170 @ SV131 )
               != SV131 )
              | ~ ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) )
          | ~ ( ( ( sK21_C @ SV170 @ SV131 )
                = SV131 )
              | ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) ) )
        = $false )
      | ( ( SV170
          = ( singleton @ SV131 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[805]) ).

thf(866,plain,
    ! [SV132: $i,SV171: $i] :
      ( ( ( SV171
          = ( singleton @ SV132 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY384: $i] :
                    ( ( SY384 != SV132 )
                    | ( in @ SY384 @ SV171 ) )
              | ~ ! [SY385: $i] :
                    ( ~ ( in @ SY385 @ SV171 )
                    | ( SY385 = SV132 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[806]) ).

thf(867,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ~ ( ! [SY386: $i] :
                  ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SY386 )
                  | ~ ( in @ SY386 @ SV133 ) )
              | ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) )
          | ~ ( ~ ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ ( sK9_SY185 @ SV172 @ SV133 ) )
                  | ~ ( in @ ( sK9_SY185 @ SV172 @ SV133 ) @ SV133 ) )
              | ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) ) )
        = $false )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[807]) ).

thf(868,plain,
    ! [SV134: $i,SV173: $i] :
      ( ( ( SV173
          = ( union @ SV134 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY387: $i] :
                    ( ! [SY354: $i] :
                        ( ~ ( in @ SY387 @ SY354 )
                        | ~ ( in @ SY354 @ SV134 ) )
                    | ( in @ SY387 @ SV173 ) )
              | ~ ! [SY389: $i] :
                    ( ~ ( in @ SY389 @ SV173 )
                    | ~ ( ~ ( in @ SY389 @ ( sK7_D @ SY389 @ SV173 @ SV134 ) )
                        | ~ ( in @ ( sK7_D @ SY389 @ SV173 @ SV134 ) @ SV134 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[808]) ).

thf(869,plain,
    ! [SV174: $i,SV135: $i] :
      ( ( ( ( set_difference @ SV135 @ SV174 )
          = empty_set )
        = $false )
      | ( ( subset @ SV135 @ SV174 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[809]) ).

thf(870,plain,
    ! [SV175: $i,SV136: $i] :
      ( ( ( subset @ SV136 @ SV175 )
        = $false )
      | ( ( ( set_difference @ SV136 @ SV175 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[810]) ).

thf(871,plain,
    ! [SV190: $i,SV176: $i,SV59: $i] :
      ( ( ( ~ ( ~ ( ! [SY413: $i,SY414: $i] :
                      ( ~ ( in @ SY413 @ SV59 )
                      | ~ ( in @ SY414 @ SV176 )
                      | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
                       != ( ordered_pair @ SY413 @ SY414 ) ) )
                  | ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
              | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
                            | ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) )
                      | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
                       != ( ordered_pair @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) ) ) )
                  | ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) ) ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[811]) ).

thf(872,plain,
    ! [SV177: $i,SV59: $i,SV191: $i] :
      ( ( ( ( SV191
           != ( cartesian_product2 @ SV59 @ SV177 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY415: $i] :
                    ( ! [SY395: $i,SY396: $i] :
                        ( ~ ( in @ SY395 @ SV59 )
                        | ~ ( in @ SY396 @ SV177 )
                        | ( SY415
                         != ( ordered_pair @ SY395 @ SY396 ) ) )
                    | ( in @ SY415 @ SV191 ) )
              | ~ ! [SY418: $i] :
                    ( ~ ( in @ SY418 @ SV191 )
                    | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                              | ~ ( in @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
                        | ( SY418
                         != ( ordered_pair @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) ) ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[812]) ).

thf(873,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                    | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                     != SV51 ) )
                | ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                    | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                     != SV144 ) ) )
          | ~ ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
              | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                = SV51 )
              | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                = SV144 ) ) )
        = $false )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[822]) ).

thf(874,plain,
    ! [SV145: $i,SV51: $i,SV179: $i] :
      ( ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY398: $i] :
                    ( ~ ( in @ SY398 @ SV179 )
                    | ( SY398 = SV51 )
                    | ( SY398 = SV145 ) )
              | ~ ~ ( ~ ! [SY399: $i] :
                          ( ( SY399 != SV51 )
                          | ( in @ SY399 @ SV179 ) )
                    | ~ ! [SY400: $i] :
                          ( ( SY400 != SV145 )
                          | ( in @ SY400 @ SV179 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[823]) ).

thf(875,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
              | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
              | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
          | ~ ~ ( ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
                    | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
                | ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
                    | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) ) ) )
        = $false )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[824]) ).

thf(876,plain,
    ! [SV147: $i,SV52: $i,SV181: $i] :
      ( ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY401: $i] :
                    ( ~ ( in @ SY401 @ SV52 )
                    | ~ ( in @ SY401 @ SV147 )
                    | ( in @ SY401 @ SV181 ) )
              | ~ ~ ( ~ ! [SY402: $i] :
                          ( ~ ( in @ SY402 @ SV181 )
                          | ( in @ SY402 @ SV52 ) )
                    | ~ ! [SY403: $i] :
                          ( ~ ( in @ SY403 @ SV181 )
                          | ( in @ SY403 @ SV147 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[825]) ).

thf(877,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
              | ~ ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) ) )
        = $false )
      | ( ( SV148
          = ( powerset @ SV112 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[826]) ).

thf(878,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ( ~ ( ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
              | ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) ) )
        = $false )
      | ( ( SV148
          = ( powerset @ SV112 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[826]) ).

thf(879,plain,
    ! [SV113: $i,SV149: $i] :
      ( ( ( ~ ! [SY368: $i] :
                ( ~ ( in @ SY368 @ SV149 )
                | ( subset @ SY368 @ SV113 ) )
          | ~ ! [SY369: $i] :
                ( ~ ( subset @ SY369 @ SV113 )
                | ( in @ SY369 @ SV149 ) ) )
        = $false )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[827]) ).

thf(880,plain,
    ! [SV152: $i,SV116: $i] :
      ( ( ( subset @ SV116 @ SV152 )
        = $false )
      | ( ( SV116 = SV152 )
        = $true )
      | ( ( proper_subset @ SV116 @ SV152 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[830]) ).

thf(881,plain,
    ! [SV203: $i,SV192: $i] :
      ( ( ~ ( proper_subset @ SV192 @ SV203 )
        | ( SV192 != SV203 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[831]) ).

thf(882,plain,
    ! [SV204: $i,SV193: $i] :
      ( ( ~ ( proper_subset @ SV193 @ SV204 )
        | ( subset @ SV193 @ SV204 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[832]) ).

thf(883,plain,
    ! [SV118: $i,SV194: $i] :
      ( ( ( in @ SV194 @ SV118 )
        = $false )
      | ( ( SV118 = empty_set )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[833]) ).

thf(884,plain,
    ! [SV154: $i,SV120: $i,SV195: $i] :
      ( ( ( in @ SV195 @ ( set_intersection2 @ SV120 @ SV154 ) )
        = $false )
      | ( ( ~ ( disjoint @ SV120 @ SV154 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[834]) ).

thf(885,plain,
    ! [SV155: $i,SV182: $i,SV53: $i] :
      ( ( ( ~ ( in @ SV53 @ SV182 ) )
        = $true )
      | ( ( ~ ( in @ SV155 @ SV182 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV53 @ SV155 ) @ SV182 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[835]) ).

thf(886,plain,
    ! [SV205: $i,SV53: $i] :
      ( ( ! [SY425: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV53 @ SV205 ) @ SY425 )
            | ( in @ SV53 @ SY425 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[836]) ).

thf(887,plain,
    ! [SV206: $i,SV53: $i] :
      ( ( ! [SY426: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV53 @ SV206 ) @ SY426 )
            | ( in @ SV206 @ SY426 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[837]) ).

thf(888,plain,
    ! [SV196: $i,SV95: $i,SV183: $i,SV54: $i] :
      ( ( ( ~ ( in @ SV54 @ SV183 )
          | ~ ( in @ SV95 @ SV196 ) )
        = $true )
      | ( ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV183 @ SV196 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[838]) ).

thf(889,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ! [SY310: $i] :
            ( ! [SY311: $i] :
                ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY310 @ SY311 ) )
            | ( in @ SV54 @ SY310 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[839]) ).

thf(890,plain,
    ! [SV95: $i,SV54: $i] :
      ( ( ! [SY312: $i,SY313: $i] :
            ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SY312 @ SY313 ) )
            | ( in @ SV95 @ SY313 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[840]) ).

thf(891,plain,
    ! [SV156: $i,SV121: $i] :
      ( ( ( subset @ SV121 @ SV156 )
        = $false )
      | ( ( ~ ( subset @ SV156 @ SV121 ) )
        = $true )
      | ( ( SV121 = SV156 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[841]) ).

thf(892,plain,
    ! [SV207: $i,SV197: $i] :
      ( ( ( SV197 != SV207 )
        | ( subset @ SV197 @ SV207 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[842]) ).

thf(893,plain,
    ! [SV208: $i,SV198: $i] :
      ( ( ( SV198 != SV208 )
        | ( subset @ SV208 @ SV198 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[843]) ).

thf(894,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
              | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
              | ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
          | ~ ~ ( ~ ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
                    | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
                | ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
                    | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) ) ) )
        = $false )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[844]) ).

thf(895,plain,
    ! [SV158: $i,SV55: $i,SV185: $i] :
      ( ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY405: $i] :
                    ( ~ ( in @ SY405 @ SV55 )
                    | ( in @ SY405 @ SV158 )
                    | ( in @ SY405 @ SV185 ) )
              | ~ ~ ( ~ ! [SY406: $i] :
                          ( ~ ( in @ SY406 @ SV185 )
                          | ( in @ SY406 @ SV55 ) )
                    | ~ ! [SY407: $i] :
                          ( ~ ( in @ SY407 @ SV185 )
                          | ~ ( in @ SY407 @ SV158 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[845]) ).

thf(896,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                    | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 ) )
                | ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                    | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) )
          | ~ ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
              | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 )
              | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) )
        = $false )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[846]) ).

thf(897,plain,
    ! [SV160: $i,SV56: $i,SV187: $i] :
      ( ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY408: $i] :
                    ( ~ ( in @ SY408 @ SV187 )
                    | ( in @ SY408 @ SV56 )
                    | ( in @ SY408 @ SV160 ) )
              | ~ ~ ( ~ ! [SY409: $i] :
                          ( ~ ( in @ SY409 @ SV56 )
                          | ( in @ SY409 @ SV187 ) )
                    | ~ ! [SY410: $i] :
                          ( ~ ( in @ SY410 @ SV160 )
                          | ( in @ SY410 @ SV187 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[847]) ).

thf(898,plain,
    ! [SV163: $i,SV124: $i] :
      ( ( ( SV124 = empty_set )
        = $true )
      | ( ( SV124
          = ( singleton @ SV163 ) )
        = $true )
      | ( ( subset @ SV124 @ ( singleton @ SV163 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[852]) ).

thf(899,plain,
    ! [SV199: $i] :
      ( ( ( ( SV199 != empty_set ) )
        = $true )
      | ( ( ! [SY423: $i] : ( subset @ SV199 @ ( singleton @ SY423 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[853]) ).

thf(900,plain,
    ! [SV209: $i,SV200: $i] :
      ( ( ( SV200
         != ( singleton @ SV209 ) )
        | ( subset @ SV200 @ ( singleton @ SV209 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[854]) ).

thf(901,plain,
    ! [SV127: $i,SV166: $i] :
      ( ( ( ~ ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV127 ) )
        = $false )
      | ( ( subset @ SV127 @ SV166 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[857]) ).

thf(902,plain,
    ! [SV127: $i,SV166: $i] :
      ( ( ( ~ ~ ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV166 ) )
        = $false )
      | ( ( subset @ SV127 @ SV166 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[857]) ).

thf(903,plain,
    ! [SV167: $i,SV128: $i,SV210: $i] :
      ( ( ( ~ ( in @ SV210 @ SV128 )
          | ( in @ SV210 @ SV167 ) )
        = $true )
      | ( ( subset @ SV128 @ SV167 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[858]) ).

thf(904,plain,
    ! [SV211: $i,SV188: $i,SV96: $i,SV57: $i] :
      ( ( ( ( ( ordered_pair @ SV57 @ SV96 )
           != ( ordered_pair @ SV188 @ SV211 ) ) )
        = $true )
      | ( ( SV57 = SV188 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[859]) ).

thf(905,plain,
    ! [SV201: $i,SV189: $i,SV96: $i,SV57: $i] :
      ( ( ( ( ( ordered_pair @ SV57 @ SV96 )
           != ( ordered_pair @ SV189 @ SV201 ) ) )
        = $true )
      | ( ( SV96 = SV201 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[860]) ).

thf(906,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
        = $false )
      | ( ( ~ ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 ) )
        = $true )
      | ( ( SV58 = SV97 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[861]) ).

thf(907,plain,
    ! [SV129: $i,SV168: $i] :
      ( ( ( ~ ( in @ ( sK23_C @ SV168 @ SV129 ) @ SV129 ) )
        = $false )
      | ( ( disjoint @ SV129 @ SV168 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[863]) ).

thf(908,plain,
    ! [SV129: $i,SV168: $i] :
      ( ( ( ~ ( in @ ( sK23_C @ SV168 @ SV129 ) @ SV168 ) )
        = $false )
      | ( ( disjoint @ SV129 @ SV168 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[863]) ).

thf(909,plain,
    ! [SV169: $i,SV130: $i,SV202: $i] :
      ( ( ( ~ ( in @ SV202 @ SV130 ) )
        = $true )
      | ( ( ~ ( in @ SV202 @ SV169 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV130 @ SV169 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[864]) ).

thf(910,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ( ~ ( ( ( sK21_C @ SV170 @ SV131 )
               != SV131 )
              | ~ ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) ) )
        = $false )
      | ( ( SV170
          = ( singleton @ SV131 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[865]) ).

thf(911,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ( ~ ( ( ( sK21_C @ SV170 @ SV131 )
                = SV131 )
              | ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) ) )
        = $false )
      | ( ( SV170
          = ( singleton @ SV131 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[865]) ).

thf(912,plain,
    ! [SV171: $i,SV132: $i] :
      ( ( ( ~ ! [SY384: $i] :
                ( ( SY384 != SV132 )
                | ( in @ SY384 @ SV171 ) )
          | ~ ! [SY385: $i] :
                ( ~ ( in @ SY385 @ SV171 )
                | ( SY385 = SV132 ) ) )
        = $false )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[866]) ).

thf(913,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ~ ( ! [SY386: $i] :
                  ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SY386 )
                  | ~ ( in @ SY386 @ SV133 ) )
              | ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) ) )
        = $false )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[867]) ).

thf(914,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ ( sK9_SY185 @ SV172 @ SV133 ) )
                  | ~ ( in @ ( sK9_SY185 @ SV172 @ SV133 ) @ SV133 ) )
              | ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) ) )
        = $false )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[867]) ).

thf(915,plain,
    ! [SV173: $i,SV134: $i] :
      ( ( ( ~ ! [SY387: $i] :
                ( ! [SY354: $i] :
                    ( ~ ( in @ SY387 @ SY354 )
                    | ~ ( in @ SY354 @ SV134 ) )
                | ( in @ SY387 @ SV173 ) )
          | ~ ! [SY389: $i] :
                ( ~ ( in @ SY389 @ SV173 )
                | ~ ( ~ ( in @ SY389 @ ( sK7_D @ SY389 @ SV173 @ SV134 ) )
                    | ~ ( in @ ( sK7_D @ SY389 @ SV173 @ SV134 ) @ SV134 ) ) ) )
        = $false )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[868]) ).

thf(916,plain,
    ! [SV190: $i,SV176: $i,SV59: $i] :
      ( ( ( ~ ( ! [SY413: $i,SY414: $i] :
                  ( ~ ( in @ SY413 @ SV59 )
                  | ~ ( in @ SY414 @ SV176 )
                  | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
                   != ( ordered_pair @ SY413 @ SY414 ) ) )
              | ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
          | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
                        | ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) )
                  | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
                   != ( ordered_pair @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) ) ) )
              | ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) ) )
        = $false )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[871]) ).

thf(917,plain,
    ! [SV177: $i,SV59: $i,SV191: $i] :
      ( ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY415: $i] :
                    ( ! [SY395: $i,SY396: $i] :
                        ( ~ ( in @ SY395 @ SV59 )
                        | ~ ( in @ SY396 @ SV177 )
                        | ( SY415
                         != ( ordered_pair @ SY395 @ SY396 ) ) )
                    | ( in @ SY415 @ SV191 ) )
              | ~ ! [SY418: $i] :
                    ( ~ ( in @ SY418 @ SV191 )
                    | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                              | ~ ( in @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
                        | ( SY418
                         != ( ordered_pair @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) ) ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[872]) ).

thf(918,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                    | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                     != SV51 ) )
                | ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                    | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                     != SV144 ) ) ) )
        = $false )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[873]) ).

thf(919,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
              | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                = SV51 )
              | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                = SV144 ) ) )
        = $false )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[873]) ).

thf(920,plain,
    ! [SV145: $i,SV51: $i,SV179: $i] :
      ( ( ( ~ ! [SY398: $i] :
                ( ~ ( in @ SY398 @ SV179 )
                | ( SY398 = SV51 )
                | ( SY398 = SV145 ) )
          | ~ ~ ( ~ ! [SY399: $i] :
                      ( ( SY399 != SV51 )
                      | ( in @ SY399 @ SV179 ) )
                | ~ ! [SY400: $i] :
                      ( ( SY400 != SV145 )
                      | ( in @ SY400 @ SV179 ) ) ) )
        = $false )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[874]) ).

thf(921,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
              | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
              | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) ) )
        = $false )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[875]) ).

thf(922,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ~ ( ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
                    | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
                | ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
                    | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) ) ) )
        = $false )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[875]) ).

thf(923,plain,
    ! [SV181: $i,SV147: $i,SV52: $i] :
      ( ( ( ~ ! [SY401: $i] :
                ( ~ ( in @ SY401 @ SV52 )
                | ~ ( in @ SY401 @ SV147 )
                | ( in @ SY401 @ SV181 ) )
          | ~ ~ ( ~ ! [SY402: $i] :
                      ( ~ ( in @ SY402 @ SV181 )
                      | ( in @ SY402 @ SV52 ) )
                | ~ ! [SY403: $i] :
                      ( ~ ( in @ SY403 @ SV181 )
                      | ( in @ SY403 @ SV147 ) ) ) )
        = $false )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[876]) ).

thf(924,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ( ~ ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
          | ~ ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) )
        = $true )
      | ( ( SV148
          = ( powerset @ SV112 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[877]) ).

thf(925,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ( ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
          | ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) )
        = $true )
      | ( ( SV148
          = ( powerset @ SV112 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[878]) ).

thf(926,plain,
    ! [SV113: $i,SV149: $i] :
      ( ( ( ~ ! [SY368: $i] :
                ( ~ ( in @ SY368 @ SV149 )
                | ( subset @ SY368 @ SV113 ) ) )
        = $false )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[879]) ).

thf(927,plain,
    ! [SV149: $i,SV113: $i] :
      ( ( ( ~ ! [SY369: $i] :
                ( ~ ( subset @ SY369 @ SV113 )
                | ( in @ SY369 @ SV149 ) ) )
        = $false )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[879]) ).

thf(928,plain,
    ! [SV203: $i,SV192: $i] :
      ( ( ( ~ ( proper_subset @ SV192 @ SV203 ) )
        = $true )
      | ( ( ( SV192 != SV203 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[881]) ).

thf(929,plain,
    ! [SV204: $i,SV193: $i] :
      ( ( ( ~ ( proper_subset @ SV193 @ SV204 ) )
        = $true )
      | ( ( subset @ SV193 @ SV204 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[882]) ).

thf(930,plain,
    ! [SV195: $i,SV154: $i,SV120: $i] :
      ( ( ( disjoint @ SV120 @ SV154 )
        = $false )
      | ( ( in @ SV195 @ ( set_intersection2 @ SV120 @ SV154 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[884]) ).

thf(931,plain,
    ! [SV155: $i,SV182: $i,SV53: $i] :
      ( ( ( in @ SV53 @ SV182 )
        = $false )
      | ( ( ~ ( in @ SV155 @ SV182 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV53 @ SV155 ) @ SV182 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[885]) ).

thf(932,plain,
    ! [SV212: $i,SV205: $i,SV53: $i] :
      ( ( ~ ( subset @ ( unordered_pair @ SV53 @ SV205 ) @ SV212 )
        | ( in @ SV53 @ SV212 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[886]) ).

thf(933,plain,
    ! [SV213: $i,SV206: $i,SV53: $i] :
      ( ( ~ ( subset @ ( unordered_pair @ SV53 @ SV206 ) @ SV213 )
        | ( in @ SV206 @ SV213 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[887]) ).

thf(934,plain,
    ! [SV196: $i,SV95: $i,SV183: $i,SV54: $i] :
      ( ( ( ~ ( in @ SV54 @ SV183 ) )
        = $true )
      | ( ( ~ ( in @ SV95 @ SV196 ) )
        = $true )
      | ( ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV183 @ SV196 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[888]) ).

thf(935,plain,
    ! [SV214: $i,SV95: $i,SV54: $i] :
      ( ( ! [SY427: $i] :
            ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV214 @ SY427 ) )
        | ( in @ SV54 @ SV214 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[889]) ).

thf(936,plain,
    ! [SV215: $i,SV95: $i,SV54: $i] :
      ( ( ! [SY428: $i] :
            ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV215 @ SY428 ) )
            | ( in @ SV95 @ SY428 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[890]) ).

thf(937,plain,
    ! [SV121: $i,SV156: $i] :
      ( ( ( subset @ SV156 @ SV121 )
        = $false )
      | ( ( subset @ SV121 @ SV156 )
        = $false )
      | ( ( SV121 = SV156 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[891]) ).

thf(938,plain,
    ! [SV207: $i,SV197: $i] :
      ( ( ( ( SV197 != SV207 ) )
        = $true )
      | ( ( subset @ SV197 @ SV207 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[892]) ).

thf(939,plain,
    ! [SV208: $i,SV198: $i] :
      ( ( ( ( SV198 != SV208 ) )
        = $true )
      | ( ( subset @ SV208 @ SV198 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[893]) ).

thf(940,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
              | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
              | ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) ) )
        = $false )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[894]) ).

thf(941,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ~ ( ~ ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
                    | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
                | ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
                    | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) ) ) )
        = $false )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[894]) ).

thf(942,plain,
    ! [SV185: $i,SV158: $i,SV55: $i] :
      ( ( ( ~ ! [SY405: $i] :
                ( ~ ( in @ SY405 @ SV55 )
                | ( in @ SY405 @ SV158 )
                | ( in @ SY405 @ SV185 ) )
          | ~ ~ ( ~ ! [SY406: $i] :
                      ( ~ ( in @ SY406 @ SV185 )
                      | ( in @ SY406 @ SV55 ) )
                | ~ ! [SY407: $i] :
                      ( ~ ( in @ SY407 @ SV185 )
                      | ~ ( in @ SY407 @ SV158 ) ) ) )
        = $false )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[895]) ).

thf(943,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                    | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 ) )
                | ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                    | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) ) )
        = $false )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[896]) ).

thf(944,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
              | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 )
              | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) )
        = $false )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[896]) ).

thf(945,plain,
    ! [SV160: $i,SV56: $i,SV187: $i] :
      ( ( ( ~ ! [SY408: $i] :
                ( ~ ( in @ SY408 @ SV187 )
                | ( in @ SY408 @ SV56 )
                | ( in @ SY408 @ SV160 ) )
          | ~ ~ ( ~ ! [SY409: $i] :
                      ( ~ ( in @ SY409 @ SV56 )
                      | ( in @ SY409 @ SV187 ) )
                | ~ ! [SY410: $i] :
                      ( ~ ( in @ SY410 @ SV160 )
                      | ( in @ SY410 @ SV187 ) ) ) )
        = $false )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[897]) ).

thf(946,plain,
    ! [SV199: $i] :
      ( ( ( SV199 = empty_set )
        = $false )
      | ( ( ! [SY423: $i] : ( subset @ SV199 @ ( singleton @ SY423 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[899]) ).

thf(947,plain,
    ! [SV209: $i,SV200: $i] :
      ( ( ( ( SV200
           != ( singleton @ SV209 ) ) )
        = $true )
      | ( ( subset @ SV200 @ ( singleton @ SV209 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[900]) ).

thf(948,plain,
    ! [SV127: $i,SV166: $i] :
      ( ( ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV127 )
        = $true )
      | ( ( subset @ SV127 @ SV166 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[901]) ).

thf(949,plain,
    ! [SV127: $i,SV166: $i] :
      ( ( ( ~ ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV166 ) )
        = $true )
      | ( ( subset @ SV127 @ SV166 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[902]) ).

thf(950,plain,
    ! [SV167: $i,SV128: $i,SV210: $i] :
      ( ( ( ~ ( in @ SV210 @ SV128 ) )
        = $true )
      | ( ( in @ SV210 @ SV167 )
        = $true )
      | ( ( subset @ SV128 @ SV167 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[903]) ).

thf(951,plain,
    ! [SV211: $i,SV188: $i,SV96: $i,SV57: $i] :
      ( ( ( ( ordered_pair @ SV57 @ SV96 )
          = ( ordered_pair @ SV188 @ SV211 ) )
        = $false )
      | ( ( SV57 = SV188 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[904]) ).

thf(952,plain,
    ! [SV201: $i,SV189: $i,SV96: $i,SV57: $i] :
      ( ( ( ( ordered_pair @ SV57 @ SV96 )
          = ( ordered_pair @ SV189 @ SV201 ) )
        = $false )
      | ( ( SV96 = SV201 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[905]) ).

thf(953,plain,
    ! [SV58: $i,SV97: $i] :
      ( ( ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV97 )
        = $false )
      | ( ( in @ ( sK3_C @ SV97 @ SV58 ) @ SV58 )
        = $false )
      | ( ( SV58 = SV97 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[906]) ).

thf(954,plain,
    ! [SV129: $i,SV168: $i] :
      ( ( ( in @ ( sK23_C @ SV168 @ SV129 ) @ SV129 )
        = $true )
      | ( ( disjoint @ SV129 @ SV168 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[907]) ).

thf(955,plain,
    ! [SV129: $i,SV168: $i] :
      ( ( ( in @ ( sK23_C @ SV168 @ SV129 ) @ SV168 )
        = $true )
      | ( ( disjoint @ SV129 @ SV168 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[908]) ).

thf(956,plain,
    ! [SV169: $i,SV130: $i,SV202: $i] :
      ( ( ( in @ SV202 @ SV130 )
        = $false )
      | ( ( ~ ( in @ SV202 @ SV169 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV130 @ SV169 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[909]) ).

thf(957,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ( ( ( sK21_C @ SV170 @ SV131 )
           != SV131 )
          | ~ ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) )
        = $true )
      | ( ( SV170
          = ( singleton @ SV131 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[910]) ).

thf(958,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ( ( ( sK21_C @ SV170 @ SV131 )
            = SV131 )
          | ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) )
        = $true )
      | ( ( SV170
          = ( singleton @ SV131 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[911]) ).

thf(959,plain,
    ! [SV171: $i,SV132: $i] :
      ( ( ( ~ ! [SY384: $i] :
                ( ( SY384 != SV132 )
                | ( in @ SY384 @ SV171 ) ) )
        = $false )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[912]) ).

thf(960,plain,
    ! [SV132: $i,SV171: $i] :
      ( ( ( ~ ! [SY385: $i] :
                ( ~ ( in @ SY385 @ SV171 )
                | ( SY385 = SV132 ) ) )
        = $false )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[912]) ).

thf(961,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ! [SY386: $i] :
              ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SY386 )
              | ~ ( in @ SY386 @ SV133 ) )
          | ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[913]) ).

thf(962,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ ( sK9_SY185 @ SV172 @ SV133 ) )
              | ~ ( in @ ( sK9_SY185 @ SV172 @ SV133 ) @ SV133 ) )
          | ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[914]) ).

thf(963,plain,
    ! [SV173: $i,SV134: $i] :
      ( ( ( ~ ! [SY387: $i] :
                ( ! [SY354: $i] :
                    ( ~ ( in @ SY387 @ SY354 )
                    | ~ ( in @ SY354 @ SV134 ) )
                | ( in @ SY387 @ SV173 ) ) )
        = $false )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[915]) ).

thf(964,plain,
    ! [SV134: $i,SV173: $i] :
      ( ( ( ~ ! [SY389: $i] :
                ( ~ ( in @ SY389 @ SV173 )
                | ~ ( ~ ( in @ SY389 @ ( sK7_D @ SY389 @ SV173 @ SV134 ) )
                    | ~ ( in @ ( sK7_D @ SY389 @ SV173 @ SV134 ) @ SV134 ) ) ) )
        = $false )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[915]) ).

thf(965,plain,
    ! [SV190: $i,SV176: $i,SV59: $i] :
      ( ( ( ~ ( ! [SY413: $i,SY414: $i] :
                  ( ~ ( in @ SY413 @ SV59 )
                  | ~ ( in @ SY414 @ SV176 )
                  | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
                   != ( ordered_pair @ SY413 @ SY414 ) ) )
              | ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) ) )
        = $false )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[916]) ).

thf(966,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
                        | ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) )
                  | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
                   != ( ordered_pair @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) ) ) )
              | ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) ) )
        = $false )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[916]) ).

thf(967,plain,
    ! [SV191: $i,SV177: $i,SV59: $i] :
      ( ( ( ~ ! [SY415: $i] :
                ( ! [SY395: $i,SY396: $i] :
                    ( ~ ( in @ SY395 @ SV59 )
                    | ~ ( in @ SY396 @ SV177 )
                    | ( SY415
                     != ( ordered_pair @ SY395 @ SY396 ) ) )
                | ( in @ SY415 @ SV191 ) )
          | ~ ! [SY418: $i] :
                ( ~ ( in @ SY418 @ SV191 )
                | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                          | ~ ( in @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
                    | ( SY418
                     != ( ordered_pair @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) ) ) ) ) )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[917]) ).

thf(968,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                  | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                   != SV51 ) )
              | ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
                  | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
                   != SV144 ) ) ) )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[918]) ).

thf(969,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
          | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
            = SV51 )
          | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
            = SV144 ) )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[919]) ).

thf(970,plain,
    ! [SV145: $i,SV51: $i,SV179: $i] :
      ( ( ( ~ ! [SY398: $i] :
                ( ~ ( in @ SY398 @ SV179 )
                | ( SY398 = SV51 )
                | ( SY398 = SV145 ) ) )
        = $false )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[920]) ).

thf(971,plain,
    ! [SV145: $i,SV179: $i,SV51: $i] :
      ( ( ( ~ ~ ( ~ ! [SY399: $i] :
                      ( ( SY399 != SV51 )
                      | ( in @ SY399 @ SV179 ) )
                | ~ ! [SY400: $i] :
                      ( ( SY400 != SV145 )
                      | ( in @ SY400 @ SV179 ) ) ) )
        = $false )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[920]) ).

thf(972,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
          | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
          | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[921]) ).

thf(973,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ( ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
                  | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
              | ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
                  | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) ) ) )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[922]) ).

thf(974,plain,
    ! [SV181: $i,SV147: $i,SV52: $i] :
      ( ( ( ~ ! [SY401: $i] :
                ( ~ ( in @ SY401 @ SV52 )
                | ~ ( in @ SY401 @ SV147 )
                | ( in @ SY401 @ SV181 ) ) )
        = $false )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[923]) ).

thf(975,plain,
    ! [SV147: $i,SV52: $i,SV181: $i] :
      ( ( ( ~ ~ ( ~ ! [SY402: $i] :
                      ( ~ ( in @ SY402 @ SV181 )
                      | ( in @ SY402 @ SV52 ) )
                | ~ ! [SY403: $i] :
                      ( ~ ( in @ SY403 @ SV181 )
                      | ( in @ SY403 @ SV147 ) ) ) )
        = $false )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[923]) ).

thf(976,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ( ~ ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 ) )
        = $true )
      | ( ( ~ ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) )
        = $true )
      | ( ( SV148
          = ( powerset @ SV112 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[924]) ).

thf(977,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
        = $true )
      | ( ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 )
        = $true )
      | ( ( SV148
          = ( powerset @ SV112 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[925]) ).

thf(978,plain,
    ! [SV113: $i,SV149: $i] :
      ( ( ( ! [SY368: $i] :
              ( ~ ( in @ SY368 @ SV149 )
              | ( subset @ SY368 @ SV113 ) ) )
        = $true )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[926]) ).

thf(979,plain,
    ! [SV149: $i,SV113: $i] :
      ( ( ( ! [SY369: $i] :
              ( ~ ( subset @ SY369 @ SV113 )
              | ( in @ SY369 @ SV149 ) ) )
        = $true )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[927]) ).

thf(980,plain,
    ! [SV203: $i,SV192: $i] :
      ( ( ( proper_subset @ SV192 @ SV203 )
        = $false )
      | ( ( ( SV192 != SV203 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[928]) ).

thf(981,plain,
    ! [SV204: $i,SV193: $i] :
      ( ( ( proper_subset @ SV193 @ SV204 )
        = $false )
      | ( ( subset @ SV193 @ SV204 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[929]) ).

thf(982,plain,
    ! [SV53: $i,SV182: $i,SV155: $i] :
      ( ( ( in @ SV155 @ SV182 )
        = $false )
      | ( ( in @ SV53 @ SV182 )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV53 @ SV155 ) @ SV182 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[931]) ).

thf(983,plain,
    ! [SV212: $i,SV205: $i,SV53: $i] :
      ( ( ( ~ ( subset @ ( unordered_pair @ SV53 @ SV205 ) @ SV212 ) )
        = $true )
      | ( ( in @ SV53 @ SV212 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[932]) ).

thf(984,plain,
    ! [SV213: $i,SV206: $i,SV53: $i] :
      ( ( ( ~ ( subset @ ( unordered_pair @ SV53 @ SV206 ) @ SV213 ) )
        = $true )
      | ( ( in @ SV206 @ SV213 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[933]) ).

thf(985,plain,
    ! [SV196: $i,SV95: $i,SV183: $i,SV54: $i] :
      ( ( ( in @ SV54 @ SV183 )
        = $false )
      | ( ( ~ ( in @ SV95 @ SV196 ) )
        = $true )
      | ( ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV183 @ SV196 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[934]) ).

thf(986,plain,
    ! [SV214: $i,SV95: $i,SV54: $i] :
      ( ( ( ! [SY427: $i] :
              ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV214 @ SY427 ) ) )
        = $true )
      | ( ( in @ SV54 @ SV214 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[935]) ).

thf(987,plain,
    ! [SV216: $i,SV215: $i,SV95: $i,SV54: $i] :
      ( ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV215 @ SV216 ) )
        | ( in @ SV95 @ SV216 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[936]) ).

thf(988,plain,
    ! [SV207: $i,SV197: $i] :
      ( ( ( SV197 = SV207 )
        = $false )
      | ( ( subset @ SV197 @ SV207 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[938]) ).

thf(989,plain,
    ! [SV208: $i,SV198: $i] :
      ( ( ( SV198 = SV208 )
        = $false )
      | ( ( subset @ SV208 @ SV198 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[939]) ).

thf(990,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
          | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
          | ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[940]) ).

thf(991,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( ~ ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
                  | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
              | ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
                  | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) ) ) )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[941]) ).

thf(992,plain,
    ! [SV185: $i,SV158: $i,SV55: $i] :
      ( ( ( ~ ! [SY405: $i] :
                ( ~ ( in @ SY405 @ SV55 )
                | ( in @ SY405 @ SV158 )
                | ( in @ SY405 @ SV185 ) ) )
        = $false )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[942]) ).

thf(993,plain,
    ! [SV158: $i,SV55: $i,SV185: $i] :
      ( ( ( ~ ~ ( ~ ! [SY406: $i] :
                      ( ~ ( in @ SY406 @ SV185 )
                      | ( in @ SY406 @ SV55 ) )
                | ~ ! [SY407: $i] :
                      ( ~ ( in @ SY407 @ SV185 )
                      | ~ ( in @ SY407 @ SV158 ) ) ) )
        = $false )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[942]) ).

thf(994,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                  | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 ) )
              | ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
                  | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) ) )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[943]) ).

thf(995,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
          | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 )
          | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[944]) ).

thf(996,plain,
    ! [SV160: $i,SV56: $i,SV187: $i] :
      ( ( ( ~ ! [SY408: $i] :
                ( ~ ( in @ SY408 @ SV187 )
                | ( in @ SY408 @ SV56 )
                | ( in @ SY408 @ SV160 ) ) )
        = $false )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[945]) ).

thf(997,plain,
    ! [SV160: $i,SV187: $i,SV56: $i] :
      ( ( ( ~ ~ ( ~ ! [SY409: $i] :
                      ( ~ ( in @ SY409 @ SV56 )
                      | ( in @ SY409 @ SV187 ) )
                | ~ ! [SY410: $i] :
                      ( ~ ( in @ SY410 @ SV160 )
                      | ( in @ SY410 @ SV187 ) ) ) )
        = $false )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[945]) ).

thf(998,plain,
    ! [SV217: $i,SV199: $i] :
      ( ( ( subset @ SV199 @ ( singleton @ SV217 ) )
        = $true )
      | ( ( SV199 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[946]) ).

thf(999,plain,
    ! [SV209: $i,SV200: $i] :
      ( ( ( SV200
          = ( singleton @ SV209 ) )
        = $false )
      | ( ( subset @ SV200 @ ( singleton @ SV209 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[947]) ).

thf(1000,plain,
    ! [SV127: $i,SV166: $i] :
      ( ( ( in @ ( sK11_C @ SV166 @ SV127 ) @ SV166 )
        = $false )
      | ( ( subset @ SV127 @ SV166 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[949]) ).

thf(1001,plain,
    ! [SV167: $i,SV128: $i,SV210: $i] :
      ( ( ( in @ SV210 @ SV128 )
        = $false )
      | ( ( in @ SV210 @ SV167 )
        = $true )
      | ( ( subset @ SV128 @ SV167 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[950]) ).

thf(1002,plain,
    ! [SV130: $i,SV169: $i,SV202: $i] :
      ( ( ( in @ SV202 @ SV169 )
        = $false )
      | ( ( in @ SV202 @ SV130 )
        = $false )
      | ( ( ~ ( disjoint @ SV130 @ SV169 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[956]) ).

thf(1003,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ( ( ( sK21_C @ SV170 @ SV131 )
           != SV131 ) )
        = $true )
      | ( ( ~ ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) )
        = $true )
      | ( ( SV170
          = ( singleton @ SV131 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[957]) ).

thf(1004,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ( ( sK21_C @ SV170 @ SV131 )
          = SV131 )
        = $true )
      | ( ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 )
        = $true )
      | ( ( SV170
          = ( singleton @ SV131 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[958]) ).

thf(1005,plain,
    ! [SV171: $i,SV132: $i] :
      ( ( ( ! [SY384: $i] :
              ( ( SY384 != SV132 )
              | ( in @ SY384 @ SV171 ) ) )
        = $true )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[959]) ).

thf(1006,plain,
    ! [SV132: $i,SV171: $i] :
      ( ( ( ! [SY385: $i] :
              ( ~ ( in @ SY385 @ SV171 )
              | ( SY385 = SV132 ) ) )
        = $true )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[960]) ).

thf(1007,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ! [SY386: $i] :
              ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SY386 )
              | ~ ( in @ SY386 @ SV133 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[961]) ).

thf(1008,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ ( sK9_SY185 @ SV172 @ SV133 ) )
              | ~ ( in @ ( sK9_SY185 @ SV172 @ SV133 ) @ SV133 ) ) )
        = $true )
      | ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[962]) ).

thf(1009,plain,
    ! [SV173: $i,SV134: $i] :
      ( ( ( ! [SY387: $i] :
              ( ! [SY354: $i] :
                  ( ~ ( in @ SY387 @ SY354 )
                  | ~ ( in @ SY354 @ SV134 ) )
              | ( in @ SY387 @ SV173 ) ) )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[963]) ).

thf(1010,plain,
    ! [SV134: $i,SV173: $i] :
      ( ( ( ! [SY389: $i] :
              ( ~ ( in @ SY389 @ SV173 )
              | ~ ( ~ ( in @ SY389 @ ( sK7_D @ SY389 @ SV173 @ SV134 ) )
                  | ~ ( in @ ( sK7_D @ SY389 @ SV173 @ SV134 ) @ SV134 ) ) ) )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[964]) ).

thf(1011,plain,
    ! [SV190: $i,SV176: $i,SV59: $i] :
      ( ( ( ! [SY413: $i,SY414: $i] :
              ( ~ ( in @ SY413 @ SV59 )
              | ~ ( in @ SY414 @ SV176 )
              | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
               != ( ordered_pair @ SY413 @ SY414 ) ) )
          | ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[965]) ).

thf(1012,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
                    | ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) )
              | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
               != ( ordered_pair @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) ) ) )
          | ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[966]) ).

thf(1013,plain,
    ! [SV191: $i,SV177: $i,SV59: $i] :
      ( ( ( ~ ! [SY415: $i] :
                ( ! [SY395: $i,SY396: $i] :
                    ( ~ ( in @ SY395 @ SV59 )
                    | ~ ( in @ SY396 @ SV177 )
                    | ( SY415
                     != ( ordered_pair @ SY395 @ SY396 ) ) )
                | ( in @ SY415 @ SV191 ) ) )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[967]) ).

thf(1014,plain,
    ! [SV59: $i,SV177: $i,SV191: $i] :
      ( ( ( ~ ! [SY418: $i] :
                ( ~ ( in @ SY418 @ SV191 )
                | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                          | ~ ( in @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
                    | ( SY418
                     != ( ordered_pair @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) ) ) ) ) )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[967]) ).

thf(1015,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
              | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
               != SV51 ) )
          | ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
              | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
               != SV144 ) ) )
        = $false )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[968]) ).

thf(1016,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
        = $true )
      | ( ( ( ( sK18_D @ SV178 @ SV144 @ SV51 )
            = SV51 )
          | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
            = SV144 ) )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[969]) ).

thf(1017,plain,
    ! [SV145: $i,SV51: $i,SV179: $i] :
      ( ( ( ! [SY398: $i] :
              ( ~ ( in @ SY398 @ SV179 )
              | ( SY398 = SV51 )
              | ( SY398 = SV145 ) ) )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[970]) ).

thf(1018,plain,
    ! [SV145: $i,SV179: $i,SV51: $i] :
      ( ( ( ~ ( ~ ! [SY399: $i] :
                    ( ( SY399 != SV51 )
                    | ( in @ SY399 @ SV179 ) )
              | ~ ! [SY400: $i] :
                    ( ( SY400 != SV145 )
                    | ( in @ SY400 @ SV179 ) ) ) )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[971]) ).

thf(1019,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
          | ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[972]) ).

thf(1020,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
              | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
          | ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
              | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) ) )
        = $false )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[973]) ).

thf(1021,plain,
    ! [SV181: $i,SV147: $i,SV52: $i] :
      ( ( ( ! [SY401: $i] :
              ( ~ ( in @ SY401 @ SV52 )
              | ~ ( in @ SY401 @ SV147 )
              | ( in @ SY401 @ SV181 ) ) )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[974]) ).

thf(1022,plain,
    ! [SV147: $i,SV52: $i,SV181: $i] :
      ( ( ( ~ ( ~ ! [SY402: $i] :
                    ( ~ ( in @ SY402 @ SV181 )
                    | ( in @ SY402 @ SV52 ) )
              | ~ ! [SY403: $i] :
                    ( ~ ( in @ SY403 @ SV181 )
                    | ( in @ SY403 @ SV147 ) ) ) )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[975]) ).

thf(1023,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
        = $false )
      | ( ( ~ ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 ) )
        = $true )
      | ( ( SV148
          = ( powerset @ SV112 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[976]) ).

thf(1024,plain,
    ! [SV113: $i,SV149: $i,SV218: $i] :
      ( ( ( ~ ( in @ SV218 @ SV149 )
          | ( subset @ SV218 @ SV113 ) )
        = $true )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[978]) ).

thf(1025,plain,
    ! [SV149: $i,SV113: $i,SV219: $i] :
      ( ( ( ~ ( subset @ SV219 @ SV113 )
          | ( in @ SV219 @ SV149 ) )
        = $true )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[979]) ).

thf(1026,plain,
    ! [SV203: $i,SV192: $i] :
      ( ( ( SV192 = SV203 )
        = $false )
      | ( ( proper_subset @ SV192 @ SV203 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[980]) ).

thf(1027,plain,
    ! [SV212: $i,SV205: $i,SV53: $i] :
      ( ( ( subset @ ( unordered_pair @ SV53 @ SV205 ) @ SV212 )
        = $false )
      | ( ( in @ SV53 @ SV212 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[983]) ).

thf(1028,plain,
    ! [SV213: $i,SV206: $i,SV53: $i] :
      ( ( ( subset @ ( unordered_pair @ SV53 @ SV206 ) @ SV213 )
        = $false )
      | ( ( in @ SV206 @ SV213 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[984]) ).

thf(1029,plain,
    ! [SV183: $i,SV54: $i,SV196: $i,SV95: $i] :
      ( ( ( in @ SV95 @ SV196 )
        = $false )
      | ( ( in @ SV54 @ SV183 )
        = $false )
      | ( ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV183 @ SV196 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[985]) ).

thf(1030,plain,
    ! [SV220: $i,SV214: $i,SV95: $i,SV54: $i] :
      ( ( ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV214 @ SV220 ) ) )
        = $true )
      | ( ( in @ SV54 @ SV214 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[986]) ).

thf(1031,plain,
    ! [SV216: $i,SV215: $i,SV95: $i,SV54: $i] :
      ( ( ( ~ ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV215 @ SV216 ) ) )
        = $true )
      | ( ( in @ SV95 @ SV216 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[987]) ).

thf(1032,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
          | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 ) )
        = $true )
      | ( ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[990]) ).

thf(1033,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
              | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
          | ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
              | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) ) )
        = $false )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[991]) ).

thf(1034,plain,
    ! [SV185: $i,SV158: $i,SV55: $i] :
      ( ( ( ! [SY405: $i] :
              ( ~ ( in @ SY405 @ SV55 )
              | ( in @ SY405 @ SV158 )
              | ( in @ SY405 @ SV185 ) ) )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[992]) ).

thf(1035,plain,
    ! [SV158: $i,SV55: $i,SV185: $i] :
      ( ( ( ~ ( ~ ! [SY406: $i] :
                    ( ~ ( in @ SY406 @ SV185 )
                    | ( in @ SY406 @ SV55 ) )
              | ~ ! [SY407: $i] :
                    ( ~ ( in @ SY407 @ SV185 )
                    | ~ ( in @ SY407 @ SV158 ) ) ) )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[993]) ).

thf(1036,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
              | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 ) )
          | ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
              | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) )
        = $false )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[994]) ).

thf(1037,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
        = $true )
      | ( ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 )
          | ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[995]) ).

thf(1038,plain,
    ! [SV160: $i,SV56: $i,SV187: $i] :
      ( ( ( ! [SY408: $i] :
              ( ~ ( in @ SY408 @ SV187 )
              | ( in @ SY408 @ SV56 )
              | ( in @ SY408 @ SV160 ) ) )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[996]) ).

thf(1039,plain,
    ! [SV160: $i,SV187: $i,SV56: $i] :
      ( ( ( ~ ( ~ ! [SY409: $i] :
                    ( ~ ( in @ SY409 @ SV56 )
                    | ( in @ SY409 @ SV187 ) )
              | ~ ! [SY410: $i] :
                    ( ~ ( in @ SY410 @ SV160 )
                    | ( in @ SY410 @ SV187 ) ) ) )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[997]) ).

thf(1040,plain,
    ! [SV202: $i,SV169: $i,SV130: $i] :
      ( ( ( disjoint @ SV130 @ SV169 )
        = $false )
      | ( ( in @ SV202 @ SV130 )
        = $false )
      | ( ( in @ SV202 @ SV169 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1002]) ).

thf(1041,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ( ( sK21_C @ SV170 @ SV131 )
          = SV131 )
        = $false )
      | ( ( ~ ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 ) )
        = $true )
      | ( ( SV170
          = ( singleton @ SV131 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1003]) ).

thf(1042,plain,
    ! [SV171: $i,SV132: $i,SV221: $i] :
      ( ( ( ( SV221 != SV132 )
          | ( in @ SV221 @ SV171 ) )
        = $true )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1005]) ).

thf(1043,plain,
    ! [SV132: $i,SV171: $i,SV222: $i] :
      ( ( ( ~ ( in @ SV222 @ SV171 )
          | ( SV222 = SV132 ) )
        = $true )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1006]) ).

thf(1044,plain,
    ! [SV223: $i,SV133: $i,SV172: $i] :
      ( ( ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV223 )
          | ~ ( in @ SV223 @ SV133 ) )
        = $true )
      | ( ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1007]) ).

thf(1045,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ ( sK9_SY185 @ SV172 @ SV133 ) )
          | ~ ( in @ ( sK9_SY185 @ SV172 @ SV133 ) @ SV133 ) )
        = $false )
      | ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1008]) ).

thf(1046,plain,
    ! [SV173: $i,SV134: $i,SV224: $i] :
      ( ( ( ! [SY429: $i] :
              ( ~ ( in @ SV224 @ SY429 )
              | ~ ( in @ SY429 @ SV134 ) )
          | ( in @ SV224 @ SV173 ) )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1009]) ).

thf(1047,plain,
    ! [SV134: $i,SV173: $i,SV225: $i] :
      ( ( ( ~ ( in @ SV225 @ SV173 )
          | ~ ( ~ ( in @ SV225 @ ( sK7_D @ SV225 @ SV173 @ SV134 ) )
              | ~ ( in @ ( sK7_D @ SV225 @ SV173 @ SV134 ) @ SV134 ) ) )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1010]) ).

thf(1048,plain,
    ! [SV190: $i,SV176: $i,SV59: $i] :
      ( ( ( ! [SY413: $i,SY414: $i] :
              ( ~ ( in @ SY413 @ SV59 )
              | ~ ( in @ SY414 @ SV176 )
              | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
               != ( ordered_pair @ SY413 @ SY414 ) ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1011]) ).

thf(1049,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
                    | ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) )
              | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
               != ( ordered_pair @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) ) ) ) )
        = $true )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1012]) ).

thf(1050,plain,
    ! [SV191: $i,SV177: $i,SV59: $i] :
      ( ( ( ! [SY415: $i] :
              ( ! [SY395: $i,SY396: $i] :
                  ( ~ ( in @ SY395 @ SV59 )
                  | ~ ( in @ SY396 @ SV177 )
                  | ( SY415
                   != ( ordered_pair @ SY395 @ SY396 ) ) )
              | ( in @ SY415 @ SV191 ) ) )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1013]) ).

thf(1051,plain,
    ! [SV59: $i,SV177: $i,SV191: $i] :
      ( ( ( ! [SY418: $i] :
              ( ~ ( in @ SY418 @ SV191 )
              | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                        | ~ ( in @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
                  | ( SY418
                   != ( ordered_pair @ ( sK12_E @ SY418 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SY418 @ SV191 @ SV177 @ SV59 ) ) ) ) ) )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1014]) ).

thf(1052,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
              | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
               != SV51 ) ) )
        = $false )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1015]) ).

thf(1053,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
              | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
               != SV144 ) ) )
        = $false )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1015]) ).

thf(1054,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ( sK18_D @ SV178 @ SV144 @ SV51 )
          = SV51 )
        = $true )
      | ( ( ( sK18_D @ SV178 @ SV144 @ SV51 )
          = SV144 )
        = $true )
      | ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1016]) ).

thf(1055,plain,
    ! [SV145: $i,SV51: $i,SV179: $i,SV226: $i] :
      ( ( ( ~ ( in @ SV226 @ SV179 )
          | ( SV226 = SV51 )
          | ( SV226 = SV145 ) )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1017]) ).

thf(1056,plain,
    ! [SV145: $i,SV179: $i,SV51: $i] :
      ( ( ( ~ ! [SY399: $i] :
                ( ( SY399 != SV51 )
                | ( in @ SY399 @ SV179 ) )
          | ~ ! [SY400: $i] :
                ( ( SY400 != SV145 )
                | ( in @ SY400 @ SV179 ) ) )
        = $false )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1018]) ).

thf(1057,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1019]) ).

thf(1058,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
              | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) ) )
        = $false )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1020]) ).

thf(1059,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ~ ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
              | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) ) )
        = $false )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1020]) ).

thf(1060,plain,
    ! [SV181: $i,SV147: $i,SV52: $i,SV227: $i] :
      ( ( ( ~ ( in @ SV227 @ SV52 )
          | ~ ( in @ SV227 @ SV147 )
          | ( in @ SV227 @ SV181 ) )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1021]) ).

thf(1061,plain,
    ! [SV147: $i,SV52: $i,SV181: $i] :
      ( ( ( ~ ! [SY402: $i] :
                ( ~ ( in @ SY402 @ SV181 )
                | ( in @ SY402 @ SV52 ) )
          | ~ ! [SY403: $i] :
                ( ~ ( in @ SY403 @ SV181 )
                | ( in @ SY403 @ SV147 ) ) )
        = $false )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1022]) ).

thf(1062,plain,
    ! [SV112: $i,SV148: $i] :
      ( ( ( subset @ ( sK19_C @ SV148 @ SV112 ) @ SV112 )
        = $false )
      | ( ( in @ ( sK19_C @ SV148 @ SV112 ) @ SV148 )
        = $false )
      | ( ( SV148
          = ( powerset @ SV112 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1023]) ).

thf(1063,plain,
    ! [SV113: $i,SV149: $i,SV218: $i] :
      ( ( ( ~ ( in @ SV218 @ SV149 ) )
        = $true )
      | ( ( subset @ SV218 @ SV113 )
        = $true )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1024]) ).

thf(1064,plain,
    ! [SV149: $i,SV113: $i,SV219: $i] :
      ( ( ( ~ ( subset @ SV219 @ SV113 ) )
        = $true )
      | ( ( in @ SV219 @ SV149 )
        = $true )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1025]) ).

thf(1065,plain,
    ! [SV220: $i,SV214: $i,SV95: $i,SV54: $i] :
      ( ( ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV214 @ SV220 ) )
        = $false )
      | ( ( in @ SV54 @ SV214 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1030]) ).

thf(1066,plain,
    ! [SV216: $i,SV215: $i,SV95: $i,SV54: $i] :
      ( ( ( in @ ( ordered_pair @ SV54 @ SV95 ) @ ( cartesian_product2 @ SV215 @ SV216 ) )
        = $false )
      | ( ( in @ SV95 @ SV216 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1031]) ).

thf(1067,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 ) )
        = $true )
      | ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
        = $true )
      | ( ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1032]) ).

thf(1068,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
              | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) ) )
        = $false )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1033]) ).

thf(1069,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
              | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) ) )
        = $false )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1033]) ).

thf(1070,plain,
    ! [SV185: $i,SV158: $i,SV55: $i,SV228: $i] :
      ( ( ( ~ ( in @ SV228 @ SV55 )
          | ( in @ SV228 @ SV158 )
          | ( in @ SV228 @ SV185 ) )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1034]) ).

thf(1071,plain,
    ! [SV158: $i,SV55: $i,SV185: $i] :
      ( ( ( ~ ! [SY406: $i] :
                ( ~ ( in @ SY406 @ SV185 )
                | ( in @ SY406 @ SV55 ) )
          | ~ ! [SY407: $i] :
                ( ~ ( in @ SY407 @ SV185 )
                | ~ ( in @ SY407 @ SV158 ) ) )
        = $false )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1035]) ).

thf(1072,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
              | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 ) ) )
        = $false )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1036]) ).

thf(1073,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
              | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) ) )
        = $false )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1036]) ).

thf(1074,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 )
        = $true )
      | ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 )
        = $true )
      | ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1037]) ).

thf(1075,plain,
    ! [SV160: $i,SV56: $i,SV187: $i,SV229: $i] :
      ( ( ( ~ ( in @ SV229 @ SV187 )
          | ( in @ SV229 @ SV56 )
          | ( in @ SV229 @ SV160 ) )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1038]) ).

thf(1076,plain,
    ! [SV160: $i,SV187: $i,SV56: $i] :
      ( ( ( ~ ! [SY409: $i] :
                ( ~ ( in @ SY409 @ SV56 )
                | ( in @ SY409 @ SV187 ) )
          | ~ ! [SY410: $i] :
                ( ~ ( in @ SY410 @ SV160 )
                | ( in @ SY410 @ SV187 ) ) )
        = $false )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1039]) ).

thf(1077,plain,
    ! [SV131: $i,SV170: $i] :
      ( ( ( in @ ( sK21_C @ SV170 @ SV131 ) @ SV170 )
        = $false )
      | ( ( ( sK21_C @ SV170 @ SV131 )
          = SV131 )
        = $false )
      | ( ( SV170
          = ( singleton @ SV131 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1041]) ).

thf(1078,plain,
    ! [SV171: $i,SV132: $i,SV221: $i] :
      ( ( ( ( SV221 != SV132 ) )
        = $true )
      | ( ( in @ SV221 @ SV171 )
        = $true )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1042]) ).

thf(1079,plain,
    ! [SV132: $i,SV171: $i,SV222: $i] :
      ( ( ( ~ ( in @ SV222 @ SV171 ) )
        = $true )
      | ( ( SV222 = SV132 )
        = $true )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1043]) ).

thf(1080,plain,
    ! [SV223: $i,SV133: $i,SV172: $i] :
      ( ( ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV223 ) )
        = $true )
      | ( ( ~ ( in @ SV223 @ SV133 ) )
        = $true )
      | ( ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1044]) ).

thf(1081,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ ( sK9_SY185 @ SV172 @ SV133 ) ) )
        = $false )
      | ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1045]) ).

thf(1082,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( ~ ( in @ ( sK9_SY185 @ SV172 @ SV133 ) @ SV133 ) )
        = $false )
      | ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1045]) ).

thf(1083,plain,
    ! [SV173: $i,SV134: $i,SV224: $i] :
      ( ( ( ! [SY429: $i] :
              ( ~ ( in @ SV224 @ SY429 )
              | ~ ( in @ SY429 @ SV134 ) ) )
        = $true )
      | ( ( in @ SV224 @ SV173 )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1046]) ).

thf(1084,plain,
    ! [SV134: $i,SV173: $i,SV225: $i] :
      ( ( ( ~ ( in @ SV225 @ SV173 ) )
        = $true )
      | ( ( ~ ( ~ ( in @ SV225 @ ( sK7_D @ SV225 @ SV173 @ SV134 ) )
              | ~ ( in @ ( sK7_D @ SV225 @ SV173 @ SV134 ) @ SV134 ) ) )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1047]) ).

thf(1085,plain,
    ! [SV190: $i,SV176: $i,SV59: $i,SV230: $i] :
      ( ( ( ! [SY430: $i] :
              ( ~ ( in @ SV230 @ SV59 )
              | ~ ( in @ SY430 @ SV176 )
              | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
               != ( ordered_pair @ SV230 @ SY430 ) ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1048]) ).

thf(1086,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
                | ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) )
          | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
           != ( ordered_pair @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) ) ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1049]) ).

thf(1087,plain,
    ! [SV191: $i,SV231: $i,SV177: $i,SV59: $i] :
      ( ( ( ! [SY431: $i,SY432: $i] :
              ( ~ ( in @ SY431 @ SV59 )
              | ~ ( in @ SY432 @ SV177 )
              | ( SV231
               != ( ordered_pair @ SY431 @ SY432 ) ) )
          | ( in @ SV231 @ SV191 ) )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1050]) ).

thf(1088,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( ~ ( in @ SV232 @ SV191 )
          | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                    | ~ ( in @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
              | ( SV232
               != ( ordered_pair @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) ) ) ) )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1051]) ).

thf(1089,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
          | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
           != SV51 ) )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1052]) ).

thf(1090,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
          | ( ( sK18_D @ SV178 @ SV144 @ SV51 )
           != SV144 ) )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1053]) ).

thf(1091,plain,
    ! [SV145: $i,SV51: $i,SV179: $i,SV226: $i] :
      ( ( ( ~ ( in @ SV226 @ SV179 ) )
        = $true )
      | ( ( ( SV226 = SV51 )
          | ( SV226 = SV145 ) )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1055]) ).

thf(1092,plain,
    ! [SV145: $i,SV179: $i,SV51: $i] :
      ( ( ( ~ ! [SY399: $i] :
                ( ( SY399 != SV51 )
                | ( in @ SY399 @ SV179 ) ) )
        = $false )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1056]) ).

thf(1093,plain,
    ! [SV51: $i,SV179: $i,SV145: $i] :
      ( ( ( ~ ! [SY400: $i] :
                ( ( SY400 != SV145 )
                | ( in @ SY400 @ SV179 ) ) )
        = $false )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1056]) ).

thf(1094,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
        = $false )
      | ( ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1057]) ).

thf(1095,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
          | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1058]) ).

thf(1096,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
          | ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1059]) ).

thf(1097,plain,
    ! [SV181: $i,SV147: $i,SV52: $i,SV227: $i] :
      ( ( ( ~ ( in @ SV227 @ SV52 )
          | ~ ( in @ SV227 @ SV147 ) )
        = $true )
      | ( ( in @ SV227 @ SV181 )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1060]) ).

thf(1098,plain,
    ! [SV147: $i,SV52: $i,SV181: $i] :
      ( ( ( ~ ! [SY402: $i] :
                ( ~ ( in @ SY402 @ SV181 )
                | ( in @ SY402 @ SV52 ) ) )
        = $false )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1061]) ).

thf(1099,plain,
    ! [SV52: $i,SV147: $i,SV181: $i] :
      ( ( ( ~ ! [SY403: $i] :
                ( ~ ( in @ SY403 @ SV181 )
                | ( in @ SY403 @ SV147 ) ) )
        = $false )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1061]) ).

thf(1100,plain,
    ! [SV113: $i,SV149: $i,SV218: $i] :
      ( ( ( in @ SV218 @ SV149 )
        = $false )
      | ( ( subset @ SV218 @ SV113 )
        = $true )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1063]) ).

thf(1101,plain,
    ! [SV149: $i,SV113: $i,SV219: $i] :
      ( ( ( subset @ SV219 @ SV113 )
        = $false )
      | ( ( in @ SV219 @ SV149 )
        = $true )
      | ( ( SV149
          = ( powerset @ SV113 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1064]) ).

thf(1102,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
        = $false )
      | ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
        = $true )
      | ( ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1067]) ).

thf(1103,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
          | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1068]) ).

thf(1104,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
          | ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 ) )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1069]) ).

thf(1105,plain,
    ! [SV185: $i,SV158: $i,SV55: $i,SV228: $i] :
      ( ( ( ~ ( in @ SV228 @ SV55 )
          | ( in @ SV228 @ SV158 ) )
        = $true )
      | ( ( in @ SV228 @ SV185 )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1070]) ).

thf(1106,plain,
    ! [SV158: $i,SV55: $i,SV185: $i] :
      ( ( ( ~ ! [SY406: $i] :
                ( ~ ( in @ SY406 @ SV185 )
                | ( in @ SY406 @ SV55 ) ) )
        = $false )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1071]) ).

thf(1107,plain,
    ! [SV55: $i,SV158: $i,SV185: $i] :
      ( ( ( ~ ! [SY407: $i] :
                ( ~ ( in @ SY407 @ SV185 )
                | ~ ( in @ SY407 @ SV158 ) ) )
        = $false )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1071]) ).

thf(1108,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
          | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 ) )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1072]) ).

thf(1109,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
          | ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1073]) ).

thf(1110,plain,
    ! [SV160: $i,SV56: $i,SV187: $i,SV229: $i] :
      ( ( ( ~ ( in @ SV229 @ SV187 ) )
        = $true )
      | ( ( ( in @ SV229 @ SV56 )
          | ( in @ SV229 @ SV160 ) )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1075]) ).

thf(1111,plain,
    ! [SV160: $i,SV187: $i,SV56: $i] :
      ( ( ( ~ ! [SY409: $i] :
                ( ~ ( in @ SY409 @ SV56 )
                | ( in @ SY409 @ SV187 ) ) )
        = $false )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1076]) ).

thf(1112,plain,
    ! [SV56: $i,SV187: $i,SV160: $i] :
      ( ( ( ~ ! [SY410: $i] :
                ( ~ ( in @ SY410 @ SV160 )
                | ( in @ SY410 @ SV187 ) ) )
        = $false )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1076]) ).

thf(1113,plain,
    ! [SV171: $i,SV132: $i,SV221: $i] :
      ( ( ( SV221 = SV132 )
        = $false )
      | ( ( in @ SV221 @ SV171 )
        = $true )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1078]) ).

thf(1114,plain,
    ! [SV132: $i,SV171: $i,SV222: $i] :
      ( ( ( in @ SV222 @ SV171 )
        = $false )
      | ( ( SV222 = SV132 )
        = $true )
      | ( ( SV171
          = ( singleton @ SV132 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1079]) ).

thf(1115,plain,
    ! [SV223: $i,SV133: $i,SV172: $i] :
      ( ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV223 )
        = $false )
      | ( ( ~ ( in @ SV223 @ SV133 ) )
        = $true )
      | ( ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1080]) ).

thf(1116,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ ( sK9_SY185 @ SV172 @ SV133 ) )
        = $true )
      | ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1081]) ).

thf(1117,plain,
    ! [SV133: $i,SV172: $i] :
      ( ( ( in @ ( sK9_SY185 @ SV172 @ SV133 ) @ SV133 )
        = $true )
      | ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1082]) ).

thf(1118,plain,
    ! [SV173: $i,SV134: $i,SV233: $i,SV224: $i] :
      ( ( ( ~ ( in @ SV224 @ SV233 )
          | ~ ( in @ SV233 @ SV134 ) )
        = $true )
      | ( ( in @ SV224 @ SV173 )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1083]) ).

thf(1119,plain,
    ! [SV134: $i,SV173: $i,SV225: $i] :
      ( ( ( in @ SV225 @ SV173 )
        = $false )
      | ( ( ~ ( ~ ( in @ SV225 @ ( sK7_D @ SV225 @ SV173 @ SV134 ) )
              | ~ ( in @ ( sK7_D @ SV225 @ SV173 @ SV134 ) @ SV134 ) ) )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1084]) ).

thf(1120,plain,
    ! [SV190: $i,SV176: $i,SV234: $i,SV59: $i,SV230: $i] :
      ( ( ( ~ ( in @ SV230 @ SV59 )
          | ~ ( in @ SV234 @ SV176 )
          | ( ( sK14_D @ SV190 @ SV176 @ SV59 )
           != ( ordered_pair @ SV230 @ SV234 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1085]) ).

thf(1121,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
                | ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1086]) ).

thf(1122,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ( ( sK14_D @ SV190 @ SV176 @ SV59 )
           != ( ordered_pair @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) ) ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1086]) ).

thf(1123,plain,
    ! [SV191: $i,SV231: $i,SV177: $i,SV59: $i] :
      ( ( ( ! [SY431: $i,SY432: $i] :
              ( ~ ( in @ SY431 @ SV59 )
              | ~ ( in @ SY432 @ SV177 )
              | ( SV231
               != ( ordered_pair @ SY431 @ SY432 ) ) ) )
        = $true )
      | ( ( in @ SV231 @ SV191 )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1087]) ).

thf(1124,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( ~ ( in @ SV232 @ SV191 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                    | ~ ( in @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
              | ( SV232
               != ( ordered_pair @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) ) ) ) )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1088]) ).

thf(1125,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 ) )
        = $true )
      | ( ( ( ( sK18_D @ SV178 @ SV144 @ SV51 )
           != SV51 ) )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1089]) ).

thf(1126,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ~ ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 ) )
        = $true )
      | ( ( ( ( sK18_D @ SV178 @ SV144 @ SV51 )
           != SV144 ) )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1090]) ).

thf(1127,plain,
    ! [SV145: $i,SV51: $i,SV179: $i,SV226: $i] :
      ( ( ( in @ SV226 @ SV179 )
        = $false )
      | ( ( ( SV226 = SV51 )
          | ( SV226 = SV145 ) )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1091]) ).

thf(1128,plain,
    ! [SV145: $i,SV179: $i,SV51: $i] :
      ( ( ( ! [SY399: $i] :
              ( ( SY399 != SV51 )
              | ( in @ SY399 @ SV179 ) ) )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1092]) ).

thf(1129,plain,
    ! [SV51: $i,SV179: $i,SV145: $i] :
      ( ( ( ! [SY400: $i] :
              ( ( SY400 != SV145 )
              | ( in @ SY400 @ SV179 ) ) )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1093]) ).

thf(1130,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
        = $false )
      | ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
        = $false )
      | ( ( ~ ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 ) )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1094]) ).

thf(1131,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
        = $true )
      | ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1095]) ).

thf(1132,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
        = $true )
      | ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 )
        = $true )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1096]) ).

thf(1133,plain,
    ! [SV181: $i,SV147: $i,SV52: $i,SV227: $i] :
      ( ( ( ~ ( in @ SV227 @ SV52 ) )
        = $true )
      | ( ( ~ ( in @ SV227 @ SV147 ) )
        = $true )
      | ( ( in @ SV227 @ SV181 )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1097]) ).

thf(1134,plain,
    ! [SV147: $i,SV52: $i,SV181: $i] :
      ( ( ( ! [SY402: $i] :
              ( ~ ( in @ SY402 @ SV181 )
              | ( in @ SY402 @ SV52 ) ) )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1098]) ).

thf(1135,plain,
    ! [SV52: $i,SV147: $i,SV181: $i] :
      ( ( ( ! [SY403: $i] :
              ( ~ ( in @ SY403 @ SV181 )
              | ( in @ SY403 @ SV147 ) ) )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1099]) ).

thf(1136,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 )
        = $false )
      | ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
        = $true )
      | ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
        = $false )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1102]) ).

thf(1137,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV55 )
        = $true )
      | ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1103]) ).

thf(1138,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 ) )
        = $true )
      | ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1104]) ).

thf(1139,plain,
    ! [SV185: $i,SV158: $i,SV55: $i,SV228: $i] :
      ( ( ( ~ ( in @ SV228 @ SV55 ) )
        = $true )
      | ( ( in @ SV228 @ SV158 )
        = $true )
      | ( ( in @ SV228 @ SV185 )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1105]) ).

thf(1140,plain,
    ! [SV158: $i,SV55: $i,SV185: $i] :
      ( ( ( ! [SY406: $i] :
              ( ~ ( in @ SY406 @ SV185 )
              | ( in @ SY406 @ SV55 ) ) )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1106]) ).

thf(1141,plain,
    ! [SV55: $i,SV158: $i,SV185: $i] :
      ( ( ( ! [SY407: $i] :
              ( ~ ( in @ SY407 @ SV185 )
              | ~ ( in @ SY407 @ SV158 ) ) )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1107]) ).

thf(1142,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 ) )
        = $true )
      | ( ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 ) )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1108]) ).

thf(1143,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 ) )
        = $true )
      | ( ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1109]) ).

thf(1144,plain,
    ! [SV160: $i,SV56: $i,SV187: $i,SV229: $i] :
      ( ( ( in @ SV229 @ SV187 )
        = $false )
      | ( ( ( in @ SV229 @ SV56 )
          | ( in @ SV229 @ SV160 ) )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1110]) ).

thf(1145,plain,
    ! [SV160: $i,SV187: $i,SV56: $i] :
      ( ( ( ! [SY409: $i] :
              ( ~ ( in @ SY409 @ SV56 )
              | ( in @ SY409 @ SV187 ) ) )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1111]) ).

thf(1146,plain,
    ! [SV56: $i,SV187: $i,SV160: $i] :
      ( ( ( ! [SY410: $i] :
              ( ~ ( in @ SY410 @ SV160 )
              | ( in @ SY410 @ SV187 ) ) )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1112]) ).

thf(1147,plain,
    ! [SV172: $i,SV133: $i,SV223: $i] :
      ( ( ( in @ SV223 @ SV133 )
        = $false )
      | ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV223 )
        = $false )
      | ( ( ~ ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 ) )
        = $true )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1115]) ).

thf(1148,plain,
    ! [SV173: $i,SV134: $i,SV233: $i,SV224: $i] :
      ( ( ( ~ ( in @ SV224 @ SV233 ) )
        = $true )
      | ( ( ~ ( in @ SV233 @ SV134 ) )
        = $true )
      | ( ( in @ SV224 @ SV173 )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1118]) ).

thf(1149,plain,
    ! [SV134: $i,SV173: $i,SV225: $i] :
      ( ( ( ~ ( in @ SV225 @ ( sK7_D @ SV225 @ SV173 @ SV134 ) )
          | ~ ( in @ ( sK7_D @ SV225 @ SV173 @ SV134 ) @ SV134 ) )
        = $false )
      | ( ( in @ SV225 @ SV173 )
        = $false )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1119]) ).

thf(1150,plain,
    ! [SV190: $i,SV176: $i,SV234: $i,SV59: $i,SV230: $i] :
      ( ( ( ~ ( in @ SV230 @ SV59 )
          | ~ ( in @ SV234 @ SV176 ) )
        = $true )
      | ( ( ( ( sK14_D @ SV190 @ SV176 @ SV59 )
           != ( ordered_pair @ SV230 @ SV234 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1120]) ).

thf(1151,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
              | ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) ) )
        = $true )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1121]) ).

thf(1152,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ( sK14_D @ SV190 @ SV176 @ SV59 )
          = ( ordered_pair @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) ) )
        = $true )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1122]) ).

thf(1153,plain,
    ! [SV191: $i,SV231: $i,SV177: $i,SV59: $i,SV235: $i] :
      ( ( ( ! [SY433: $i] :
              ( ~ ( in @ SV235 @ SV59 )
              | ~ ( in @ SY433 @ SV177 )
              | ( SV231
               != ( ordered_pair @ SV235 @ SY433 ) ) ) )
        = $true )
      | ( ( in @ SV231 @ SV191 )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1123]) ).

thf(1154,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                    | ~ ( in @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
              | ( SV232
               != ( ordered_pair @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) ) ) ) )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1124]) ).

thf(1155,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
        = $false )
      | ( ( ( ( sK18_D @ SV178 @ SV144 @ SV51 )
           != SV51 ) )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1125]) ).

thf(1156,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
        = $false )
      | ( ( ( ( sK18_D @ SV178 @ SV144 @ SV51 )
           != SV144 ) )
        = $true )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1126]) ).

thf(1157,plain,
    ! [SV179: $i,SV145: $i,SV51: $i,SV226: $i] :
      ( ( ( SV226 = SV51 )
        = $true )
      | ( ( SV226 = SV145 )
        = $true )
      | ( ( in @ SV226 @ SV179 )
        = $false )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1127]) ).

thf(1158,plain,
    ! [SV145: $i,SV179: $i,SV51: $i,SV236: $i] :
      ( ( ( ( SV236 != SV51 )
          | ( in @ SV236 @ SV179 ) )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1128]) ).

thf(1159,plain,
    ! [SV51: $i,SV179: $i,SV145: $i,SV237: $i] :
      ( ( ( ( SV237 != SV145 )
          | ( in @ SV237 @ SV179 ) )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1129]) ).

thf(1160,plain,
    ! [SV52: $i,SV146: $i,SV180: $i] :
      ( ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV180 )
        = $false )
      | ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV52 )
        = $false )
      | ( ( in @ ( sK10_D @ SV180 @ SV146 @ SV52 ) @ SV146 )
        = $false )
      | ( ( SV180
          = ( set_intersection2 @ SV52 @ SV146 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1130]) ).

thf(1161,plain,
    ! [SV181: $i,SV147: $i,SV52: $i,SV227: $i] :
      ( ( ( in @ SV227 @ SV52 )
        = $false )
      | ( ( ~ ( in @ SV227 @ SV147 ) )
        = $true )
      | ( ( in @ SV227 @ SV181 )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1133]) ).

thf(1162,plain,
    ! [SV147: $i,SV52: $i,SV181: $i,SV238: $i] :
      ( ( ( ~ ( in @ SV238 @ SV181 )
          | ( in @ SV238 @ SV52 ) )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1134]) ).

thf(1163,plain,
    ! [SV52: $i,SV147: $i,SV181: $i,SV239: $i] :
      ( ( ( ~ ( in @ SV239 @ SV181 )
          | ( in @ SV239 @ SV147 ) )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1135]) ).

thf(1164,plain,
    ! [SV55: $i,SV157: $i,SV184: $i] :
      ( ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV157 )
        = $false )
      | ( ( in @ ( sK6_D @ SV184 @ SV157 @ SV55 ) @ SV184 )
        = $true )
      | ( ( SV184
          = ( set_difference @ SV55 @ SV157 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1138]) ).

thf(1165,plain,
    ! [SV185: $i,SV158: $i,SV55: $i,SV228: $i] :
      ( ( ( in @ SV228 @ SV55 )
        = $false )
      | ( ( in @ SV228 @ SV158 )
        = $true )
      | ( ( in @ SV228 @ SV185 )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1139]) ).

thf(1166,plain,
    ! [SV158: $i,SV55: $i,SV185: $i,SV240: $i] :
      ( ( ( ~ ( in @ SV240 @ SV185 )
          | ( in @ SV240 @ SV55 ) )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1140]) ).

thf(1167,plain,
    ! [SV55: $i,SV158: $i,SV185: $i,SV241: $i] :
      ( ( ( ~ ( in @ SV241 @ SV185 )
          | ~ ( in @ SV241 @ SV158 ) )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1141]) ).

thf(1168,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
        = $false )
      | ( ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 ) )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1142]) ).

thf(1169,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
        = $false )
      | ( ( ~ ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 ) )
        = $true )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1143]) ).

thf(1170,plain,
    ! [SV187: $i,SV160: $i,SV56: $i,SV229: $i] :
      ( ( ( in @ SV229 @ SV56 )
        = $true )
      | ( ( in @ SV229 @ SV160 )
        = $true )
      | ( ( in @ SV229 @ SV187 )
        = $false )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1144]) ).

thf(1171,plain,
    ! [SV160: $i,SV187: $i,SV56: $i,SV242: $i] :
      ( ( ( ~ ( in @ SV242 @ SV56 )
          | ( in @ SV242 @ SV187 ) )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1145]) ).

thf(1172,plain,
    ! [SV56: $i,SV187: $i,SV160: $i,SV243: $i] :
      ( ( ( ~ ( in @ SV243 @ SV160 )
          | ( in @ SV243 @ SV187 ) )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1146]) ).

thf(1173,plain,
    ! [SV223: $i,SV133: $i,SV172: $i] :
      ( ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV172 )
        = $false )
      | ( ( in @ ( sK8_C @ SV172 @ SV133 ) @ SV223 )
        = $false )
      | ( ( in @ SV223 @ SV133 )
        = $false )
      | ( ( SV172
          = ( union @ SV133 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1147]) ).

thf(1174,plain,
    ! [SV173: $i,SV134: $i,SV233: $i,SV224: $i] :
      ( ( ( in @ SV224 @ SV233 )
        = $false )
      | ( ( ~ ( in @ SV233 @ SV134 ) )
        = $true )
      | ( ( in @ SV224 @ SV173 )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1148]) ).

thf(1175,plain,
    ! [SV134: $i,SV173: $i,SV225: $i] :
      ( ( ( ~ ( in @ SV225 @ ( sK7_D @ SV225 @ SV173 @ SV134 ) ) )
        = $false )
      | ( ( in @ SV225 @ SV173 )
        = $false )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1149]) ).

thf(1176,plain,
    ! [SV134: $i,SV173: $i,SV225: $i] :
      ( ( ( ~ ( in @ ( sK7_D @ SV225 @ SV173 @ SV134 ) @ SV134 ) )
        = $false )
      | ( ( in @ SV225 @ SV173 )
        = $false )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1149]) ).

thf(1177,plain,
    ! [SV190: $i,SV176: $i,SV234: $i,SV59: $i,SV230: $i] :
      ( ( ( ~ ( in @ SV230 @ SV59 ) )
        = $true )
      | ( ( ~ ( in @ SV234 @ SV176 ) )
        = $true )
      | ( ( ( ( sK14_D @ SV190 @ SV176 @ SV59 )
           != ( ordered_pair @ SV230 @ SV234 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1150]) ).

thf(1178,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
          | ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1151]) ).

thf(1179,plain,
    ! [SV191: $i,SV231: $i,SV177: $i,SV244: $i,SV59: $i,SV235: $i] :
      ( ( ( ~ ( in @ SV235 @ SV59 )
          | ~ ( in @ SV244 @ SV177 )
          | ( SV231
           != ( ordered_pair @ SV235 @ SV244 ) ) )
        = $true )
      | ( ( in @ SV231 @ SV191 )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1153]) ).

thf(1180,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                | ~ ( in @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
          | ( SV232
           != ( ordered_pair @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) ) ) )
        = $false )
      | ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1154]) ).

thf(1181,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ( sK18_D @ SV178 @ SV144 @ SV51 )
          = SV51 )
        = $false )
      | ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
        = $false )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1155]) ).

thf(1182,plain,
    ! [SV51: $i,SV144: $i,SV178: $i] :
      ( ( ( ( sK18_D @ SV178 @ SV144 @ SV51 )
          = SV144 )
        = $false )
      | ( ( in @ ( sK18_D @ SV178 @ SV144 @ SV51 ) @ SV178 )
        = $false )
      | ( ( SV178
          = ( unordered_pair @ SV51 @ SV144 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1156]) ).

thf(1183,plain,
    ! [SV145: $i,SV179: $i,SV51: $i,SV236: $i] :
      ( ( ( ( SV236 != SV51 ) )
        = $true )
      | ( ( in @ SV236 @ SV179 )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1158]) ).

thf(1184,plain,
    ! [SV51: $i,SV179: $i,SV145: $i,SV237: $i] :
      ( ( ( ( SV237 != SV145 ) )
        = $true )
      | ( ( in @ SV237 @ SV179 )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1159]) ).

thf(1185,plain,
    ! [SV181: $i,SV52: $i,SV147: $i,SV227: $i] :
      ( ( ( in @ SV227 @ SV147 )
        = $false )
      | ( ( in @ SV227 @ SV52 )
        = $false )
      | ( ( in @ SV227 @ SV181 )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1161]) ).

thf(1186,plain,
    ! [SV147: $i,SV52: $i,SV181: $i,SV238: $i] :
      ( ( ( ~ ( in @ SV238 @ SV181 ) )
        = $true )
      | ( ( in @ SV238 @ SV52 )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1162]) ).

thf(1187,plain,
    ! [SV52: $i,SV147: $i,SV181: $i,SV239: $i] :
      ( ( ( ~ ( in @ SV239 @ SV181 ) )
        = $true )
      | ( ( in @ SV239 @ SV147 )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1163]) ).

thf(1188,plain,
    ! [SV158: $i,SV55: $i,SV185: $i,SV240: $i] :
      ( ( ( ~ ( in @ SV240 @ SV185 ) )
        = $true )
      | ( ( in @ SV240 @ SV55 )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1166]) ).

thf(1189,plain,
    ! [SV55: $i,SV158: $i,SV185: $i,SV241: $i] :
      ( ( ( ~ ( in @ SV241 @ SV185 ) )
        = $true )
      | ( ( ~ ( in @ SV241 @ SV158 ) )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1167]) ).

thf(1190,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV56 )
        = $false )
      | ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
        = $false )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1168]) ).

thf(1191,plain,
    ! [SV56: $i,SV159: $i,SV186: $i] :
      ( ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV159 )
        = $false )
      | ( ( in @ ( sK17_D @ SV186 @ SV159 @ SV56 ) @ SV186 )
        = $false )
      | ( ( SV186
          = ( set_union2 @ SV56 @ SV159 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1169]) ).

thf(1192,plain,
    ! [SV160: $i,SV187: $i,SV56: $i,SV242: $i] :
      ( ( ( ~ ( in @ SV242 @ SV56 ) )
        = $true )
      | ( ( in @ SV242 @ SV187 )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1171]) ).

thf(1193,plain,
    ! [SV56: $i,SV187: $i,SV160: $i,SV243: $i] :
      ( ( ( ~ ( in @ SV243 @ SV160 ) )
        = $true )
      | ( ( in @ SV243 @ SV187 )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1172]) ).

thf(1194,plain,
    ! [SV173: $i,SV224: $i,SV134: $i,SV233: $i] :
      ( ( ( in @ SV233 @ SV134 )
        = $false )
      | ( ( in @ SV224 @ SV233 )
        = $false )
      | ( ( in @ SV224 @ SV173 )
        = $true )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1174]) ).

thf(1195,plain,
    ! [SV134: $i,SV173: $i,SV225: $i] :
      ( ( ( in @ SV225 @ ( sK7_D @ SV225 @ SV173 @ SV134 ) )
        = $true )
      | ( ( in @ SV225 @ SV173 )
        = $false )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1175]) ).

thf(1196,plain,
    ! [SV134: $i,SV173: $i,SV225: $i] :
      ( ( ( in @ ( sK7_D @ SV225 @ SV173 @ SV134 ) @ SV134 )
        = $true )
      | ( ( in @ SV225 @ SV173 )
        = $false )
      | ( ( SV173
          = ( union @ SV134 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1176]) ).

thf(1197,plain,
    ! [SV190: $i,SV176: $i,SV234: $i,SV59: $i,SV230: $i] :
      ( ( ( in @ SV230 @ SV59 )
        = $false )
      | ( ( ~ ( in @ SV234 @ SV176 ) )
        = $true )
      | ( ( ( ( sK14_D @ SV190 @ SV176 @ SV59 )
           != ( ordered_pair @ SV230 @ SV234 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1177]) ).

thf(1198,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ~ ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1178]) ).

thf(1199,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ~ ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1178]) ).

thf(1200,plain,
    ! [SV191: $i,SV231: $i,SV177: $i,SV244: $i,SV59: $i,SV235: $i] :
      ( ( ( ~ ( in @ SV235 @ SV59 )
          | ~ ( in @ SV244 @ SV177 ) )
        = $true )
      | ( ( ( SV231
           != ( ordered_pair @ SV235 @ SV244 ) ) )
        = $true )
      | ( ( in @ SV231 @ SV191 )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1179]) ).

thf(1201,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV59 )
                | ~ ( in @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV177 ) ) )
        = $false )
      | ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1180]) ).

thf(1202,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( ( SV232
           != ( ordered_pair @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) ) ) )
        = $false )
      | ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1180]) ).

thf(1203,plain,
    ! [SV145: $i,SV179: $i,SV51: $i,SV236: $i] :
      ( ( ( SV236 = SV51 )
        = $false )
      | ( ( in @ SV236 @ SV179 )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1183]) ).

thf(1204,plain,
    ! [SV51: $i,SV179: $i,SV145: $i,SV237: $i] :
      ( ( ( SV237 = SV145 )
        = $false )
      | ( ( in @ SV237 @ SV179 )
        = $true )
      | ( ( SV179
          = ( unordered_pair @ SV51 @ SV145 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1184]) ).

thf(1205,plain,
    ! [SV147: $i,SV52: $i,SV181: $i,SV238: $i] :
      ( ( ( in @ SV238 @ SV181 )
        = $false )
      | ( ( in @ SV238 @ SV52 )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1186]) ).

thf(1206,plain,
    ! [SV52: $i,SV147: $i,SV181: $i,SV239: $i] :
      ( ( ( in @ SV239 @ SV181 )
        = $false )
      | ( ( in @ SV239 @ SV147 )
        = $true )
      | ( ( SV181
          = ( set_intersection2 @ SV52 @ SV147 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1187]) ).

thf(1207,plain,
    ! [SV158: $i,SV55: $i,SV185: $i,SV240: $i] :
      ( ( ( in @ SV240 @ SV185 )
        = $false )
      | ( ( in @ SV240 @ SV55 )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1188]) ).

thf(1208,plain,
    ! [SV55: $i,SV158: $i,SV185: $i,SV241: $i] :
      ( ( ( in @ SV241 @ SV185 )
        = $false )
      | ( ( ~ ( in @ SV241 @ SV158 ) )
        = $true )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1189]) ).

thf(1209,plain,
    ! [SV160: $i,SV187: $i,SV56: $i,SV242: $i] :
      ( ( ( in @ SV242 @ SV56 )
        = $false )
      | ( ( in @ SV242 @ SV187 )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1192]) ).

thf(1210,plain,
    ! [SV56: $i,SV187: $i,SV160: $i,SV243: $i] :
      ( ( ( in @ SV243 @ SV160 )
        = $false )
      | ( ( in @ SV243 @ SV187 )
        = $true )
      | ( ( SV187
          = ( set_union2 @ SV56 @ SV160 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1193]) ).

thf(1211,plain,
    ! [SV190: $i,SV59: $i,SV230: $i,SV176: $i,SV234: $i] :
      ( ( ( in @ SV234 @ SV176 )
        = $false )
      | ( ( in @ SV230 @ SV59 )
        = $false )
      | ( ( ( ( sK14_D @ SV190 @ SV176 @ SV59 )
           != ( ordered_pair @ SV230 @ SV234 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1197]) ).

thf(1212,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( in @ ( sK15_SY189 @ SV190 @ SV176 @ SV59 ) @ SV59 )
        = $true )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1198]) ).

thf(1213,plain,
    ! [SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( in @ ( sK16_SY191 @ SV190 @ SV176 @ SV59 ) @ SV176 )
        = $true )
      | ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1199]) ).

thf(1214,plain,
    ! [SV191: $i,SV231: $i,SV177: $i,SV244: $i,SV59: $i,SV235: $i] :
      ( ( ( ~ ( in @ SV235 @ SV59 ) )
        = $true )
      | ( ( ~ ( in @ SV244 @ SV177 ) )
        = $true )
      | ( ( ( SV231
           != ( ordered_pair @ SV235 @ SV244 ) ) )
        = $true )
      | ( ( in @ SV231 @ SV191 )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1200]) ).

thf(1215,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV59 )
              | ~ ( in @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV177 ) ) )
        = $true )
      | ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1201]) ).

thf(1216,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( SV232
          = ( ordered_pair @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) ) )
        = $true )
      | ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1202]) ).

thf(1217,plain,
    ! [SV55: $i,SV185: $i,SV158: $i,SV241: $i] :
      ( ( ( in @ SV241 @ SV158 )
        = $false )
      | ( ( in @ SV241 @ SV185 )
        = $false )
      | ( ( SV185
          = ( set_difference @ SV55 @ SV158 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1208]) ).

thf(1218,plain,
    ! [SV234: $i,SV230: $i,SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( ( sK14_D @ SV190 @ SV176 @ SV59 )
          = ( ordered_pair @ SV230 @ SV234 ) )
        = $false )
      | ( ( in @ SV230 @ SV59 )
        = $false )
      | ( ( in @ SV234 @ SV176 )
        = $false )
      | ( ( ~ ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 ) )
        = $true )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1211]) ).

thf(1219,plain,
    ! [SV191: $i,SV231: $i,SV177: $i,SV244: $i,SV59: $i,SV235: $i] :
      ( ( ( in @ SV235 @ SV59 )
        = $false )
      | ( ( ~ ( in @ SV244 @ SV177 ) )
        = $true )
      | ( ( ( SV231
           != ( ordered_pair @ SV235 @ SV244 ) ) )
        = $true )
      | ( ( in @ SV231 @ SV191 )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1214]) ).

thf(1220,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( ~ ( in @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV59 )
          | ~ ( in @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
        = $false )
      | ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1215]) ).

thf(1221,plain,
    ! [SV230: $i,SV234: $i,SV59: $i,SV176: $i,SV190: $i] :
      ( ( ( in @ ( sK14_D @ SV190 @ SV176 @ SV59 ) @ SV190 )
        = $false )
      | ( ( in @ SV234 @ SV176 )
        = $false )
      | ( ( in @ SV230 @ SV59 )
        = $false )
      | ( ( ( sK14_D @ SV190 @ SV176 @ SV59 )
          = ( ordered_pair @ SV230 @ SV234 ) )
        = $false )
      | ( ( SV190
          = ( cartesian_product2 @ SV59 @ SV176 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1218]) ).

thf(1222,plain,
    ! [SV191: $i,SV231: $i,SV59: $i,SV235: $i,SV177: $i,SV244: $i] :
      ( ( ( in @ SV244 @ SV177 )
        = $false )
      | ( ( in @ SV235 @ SV59 )
        = $false )
      | ( ( ( SV231
           != ( ordered_pair @ SV235 @ SV244 ) ) )
        = $true )
      | ( ( in @ SV231 @ SV191 )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1219]) ).

thf(1223,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( ~ ( in @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV59 ) )
        = $false )
      | ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1220]) ).

thf(1224,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( ~ ( in @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV177 ) )
        = $false )
      | ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1220]) ).

thf(1225,plain,
    ! [SV191: $i,SV177: $i,SV59: $i,SV244: $i,SV235: $i,SV231: $i] :
      ( ( ( SV231
          = ( ordered_pair @ SV235 @ SV244 ) )
        = $false )
      | ( ( in @ SV235 @ SV59 )
        = $false )
      | ( ( in @ SV244 @ SV177 )
        = $false )
      | ( ( in @ SV231 @ SV191 )
        = $true )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1222]) ).

thf(1226,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( in @ ( sK12_E @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV59 )
        = $true )
      | ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1223]) ).

thf(1227,plain,
    ! [SV59: $i,SV177: $i,SV191: $i,SV232: $i] :
      ( ( ( in @ ( sK13_SY186 @ SV232 @ SV191 @ SV177 @ SV59 ) @ SV177 )
        = $true )
      | ( ( in @ SV232 @ SV191 )
        = $false )
      | ( ( SV191
          = ( cartesian_product2 @ SV59 @ SV177 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1224]) ).

thf(1228,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[265,1227,1226,1225,1221,1217,1216,1213,1212,1210,1209,1207,1206,1205,1204,1203,1196,1195,1194,1191,1190,1185,1182,1181,1173,1170,1165,1164,1160,1157,1152,1137,1136,1132,1131,1117,1116,1114,1113,1101,1100,1077,1074,1066,1065,1062,1054,1040,1029,1028,1027,1026,1004,1001,1000,999,998,989,988,982,981,977,955,954,953,952,951,948,937,930,898,883,880,870,869,862,856,855,851,850,849,848,829,828,821,820,819,818,817,816,815,814,813,774,757,751,711,694,693,692,691,690,687,686,685,680,627,626,625,619,616,614,610,608,605,585,553,549,539,529,479,475,474,473,472,466,462,460,458,457,451,443,413,412,411,410,408,407,405,404,389,379,327,320,319,318,317,316,315,314,313,312,311,310]) ).

thf(1229,plain,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[249]) ).

thf(1230,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[248]) ).

thf(1231,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( disjoint @ ( singleton @ A ) @ B )
          | ~ ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[247]) ).

thf(1232,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
          | ( disjoint @ ( singleton @ A ) @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[246]) ).

thf(1233,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ ( singleton @ A ) @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ B )
          | ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[245]) ).

thf(1234,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
           != empty_set )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_difference @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[244]) ).

thf(1235,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] :
              ( ( in @ C @ A )
              | ( subset @ A @ ( set_difference @ B @ ( singleton @ C ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[243]) ).

thf(1236,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ ( singleton @ B ) )
          | ( A = empty_set )
          | ( A
            = ( singleton @ B ) ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] : ( subset @ A @ ( singleton @ B ) ) )
      & ! [A: $i,B: $i] :
          ( ( A
           != ( singleton @ B ) )
          | ( subset @ A @ ( singleton @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[242]) ).

thf(1237,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ A @ ( union @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[241]) ).

thf(1238,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i,D: $i] :
              ( ~ ( in @ A @ C )
              | ~ ( in @ B @ D )
              | ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) ) )
          & ! [C: $i] :
              ( ! [D: $i] :
                  ~ ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
              | ( in @ A @ C ) )
          & ! [C: $i,D: $i] :
              ( ~ ( in @ ( ordered_pair @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
              | ( in @ B @ D ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[240]) ).

thf(1239,plain,
    ( ( ! [A: $i,B: $i,C: $i,D: $i] :
          ( ( A = D )
          | ( A = C )
          | ( ( unordered_pair @ A @ B )
           != ( unordered_pair @ C @ D ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[239]) ).

thf(1240,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_union2 @ A @ B )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[238]) ).

thf(1241,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ ( set_intersection2 @ A @ B ) @ A ) )
    = $true ),
    inference(copy,[status(thm)],[169]) ).

thf(1242,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ A @ C )
          | ( subset @ A @ ( set_intersection2 @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[237]) ).

thf(1243,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ B @ C )
          | ( subset @ A @ C ) ) )
    = $true ),
    inference(copy,[status(thm)],[236]) ).

thf(1244,plain,
    ( ( ( powerset @ empty_set )
      = ( singleton @ empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[166]) ).

thf(1245,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] : ( subset @ ( set_intersection2 @ A @ C ) @ ( set_intersection2 @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[235]) ).

thf(1246,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_intersection2 @ A @ B )
            = A ) ) )
    = $true ),
    inference(copy,[status(thm)],[234]) ).

thf(1247,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(copy,[status(thm)],[163]) ).

thf(1248,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] : ( subset @ ( set_difference @ A @ C ) @ ( set_difference @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[233]) ).

thf(1249,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ! [D: $i] :
                  ( ( ordered_pair @ A @ B )
                 != ( ordered_pair @ C @ D ) )
              | ( A = C ) )
          & ! [C: $i,D: $i] :
              ( ( ( ordered_pair @ A @ B )
               != ( ordered_pair @ C @ D ) )
              | ( B = D ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[232]) ).

thf(1250,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ ( set_difference @ A @ B ) @ A ) )
    = $true ),
    inference(copy,[status(thm)],[160]) ).

thf(1251,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
           != empty_set )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_difference @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[231]) ).

thf(1252,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ ( singleton @ A ) @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ B )
          | ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[230]) ).

thf(1253,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ~ ( in @ A @ C )
              | ~ ( in @ B @ C )
              | ( subset @ ( unordered_pair @ A @ B ) @ C ) )
          & ! [B: $i,C: $i] :
              ( ~ ( subset @ ( unordered_pair @ A @ B ) @ C )
              | ( in @ A @ C ) )
          & ! [B: $i,C: $i] :
              ( ~ ( subset @ ( unordered_pair @ A @ B ) @ C )
              | ( in @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[229]) ).

thf(1254,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ ( set_difference @ B @ A ) )
          = ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[156]) ).

thf(1255,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
          | ( ( in @ ( sK23_C @ B @ A ) @ A )
            & ( in @ ( sK23_C @ B @ A ) @ B ) ) )
      & ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ~ ( in @ C @ A )
              | ~ ( in @ C @ B ) )
          | ~ ( disjoint @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[228]) ).

thf(1256,plain,
    ( ( ! [A: $i] :
          ( ~ ( subset @ A @ empty_set )
          | ( A = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[227]) ).

thf(1257,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ ( set_union2 @ A @ B ) @ B )
          = ( set_difference @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[153]) ).

thf(1258,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( B
            = ( set_union2 @ A @ ( set_difference @ B @ A ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[226]) ).

thf(1259,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ A @ ( set_difference @ A @ B ) )
          = ( set_intersection2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[151]) ).

thf(1260,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
          | ( in @ ( sK22_C @ B @ A ) @ ( set_intersection2 @ A @ B ) ) )
      & ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ~ ( in @ C @ ( set_intersection2 @ A @ B ) )
          | ~ ( disjoint @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[225]) ).

thf(1261,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ B @ A )
          | ~ ( subset @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[224]) ).

thf(1262,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( disjoint @ B @ C )
          | ~ ( subset @ A @ B )
          | ( disjoint @ A @ C ) ) )
    = $true ),
    inference(copy,[status(thm)],[223]) ).

thf(1263,plain,
    ( ( ! [A: $i] :
          ( ( unordered_pair @ A @ A )
          = ( singleton @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[147]) ).

thf(1264,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
          | ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[222]) ).

thf(1265,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[145]) ).

thf(1266,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
           != A )
          | ( disjoint @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( ( set_difference @ A @ B )
            = A ) ) )
    = $true ),
    inference(copy,[status(thm)],[221]) ).

thf(1267,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ C @ B )
          | ( subset @ ( set_union2 @ A @ C ) @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[220]) ).

thf(1268,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ( singleton @ A )
             != ( unordered_pair @ B @ C ) )
          | ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[219]) ).

thf(1269,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
           != ( unordered_pair @ B @ C ) )
          | ( B = C ) ) )
    = $true ),
    inference(copy,[status(thm)],[218]) ).

thf(1270,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[217]) ).

thf(1271,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ A @ B )
          | ~ ( proper_subset @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[216]) ).

thf(1272,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( unordered_pair @ A @ B )
          = ( unordered_pair @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[138]) ).

thf(1273,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[137]) ).

thf(1274,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_intersection2 @ A @ B )
          = ( set_intersection2 @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[136]) ).

thf(1275,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ B @ A )
          | ( A = B ) )
      & ! [A: $i,B: $i] :
          ( ( A != B )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ( A != B )
          | ( subset @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[215]) ).

thf(1276,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ( ( sK21_C @ B @ A )
               != A )
              | ~ ( in @ ( sK21_C @ B @ A ) @ B ) )
            & ( ( ( sK21_C @ B @ A )
                = A )
              | ( in @ ( sK21_C @ B @ A ) @ B ) ) )
          | ( B
            = ( singleton @ A ) ) )
      & ! [A: $i,B: $i] :
          ( ( B
           != ( singleton @ A ) )
          | ( ! [C: $i] :
                ( ( C != A )
                | ( in @ C @ B ) )
            & ! [C: $i] :
                ( ~ ( in @ C @ B )
                | ( C = A ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[214]) ).

thf(1277,plain,
    ( ( ! [A: $i] :
          ( ( in @ ( sK20_B @ A ) @ A )
          | ( A = empty_set ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[213]) ).

thf(1278,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ~ ( in @ ( sK19_C @ B @ A ) @ B )
              | ~ ( subset @ ( sK19_C @ B @ A ) @ A ) )
            & ( ( in @ ( sK19_C @ B @ A ) @ B )
              | ( subset @ ( sK19_C @ B @ A ) @ A ) ) )
          | ( B
            = ( powerset @ A ) ) )
      & ! [A: $i,B: $i] :
          ( ( B
           != ( powerset @ A ) )
          | ( ! [C: $i] :
                ( ~ ( in @ C @ B )
                | ( subset @ C @ A ) )
            & ! [C: $i] :
                ( ~ ( subset @ C @ A )
                | ( in @ C @ B ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[212]) ).

thf(1279,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK18_D @ C @ B @ A ) @ C )
                  | ( ( sK18_D @ C @ B @ A )
                   != A ) )
                & ( ~ ( in @ ( sK18_D @ C @ B @ A ) @ C )
                  | ( ( sK18_D @ C @ B @ A )
                   != B ) )
                & ( ( in @ ( sK18_D @ C @ B @ A ) @ C )
                  | ( ( sK18_D @ C @ B @ A )
                    = A )
                  | ( ( sK18_D @ C @ B @ A )
                    = B ) ) )
              | ( C
                = ( unordered_pair @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( unordered_pair @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( D = A )
                    | ( D = B ) )
                & ! [D: $i] :
                    ( ( D != A )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ( D != B )
                    | ( in @ D @ C ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[211]) ).

thf(1280,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK17_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK17_D @ C @ B @ A ) @ A ) )
                & ( ~ ( in @ ( sK17_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK17_D @ C @ B @ A ) @ B ) )
                & ( ( in @ ( sK17_D @ C @ B @ A ) @ C )
                  | ( in @ ( sK17_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK17_D @ C @ B @ A ) @ B ) ) )
              | ( C
                = ( set_union2 @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( set_union2 @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ A )
                    | ( in @ D @ B ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ A )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ B )
                    | ( in @ D @ C ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[210]) ).

thf(1281,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ! [SY187: $i,SY188: $i] :
                      ( ~ ( in @ SY187 @ A )
                      | ~ ( in @ SY188 @ B )
                      | ( ( sK14_D @ C @ B @ A )
                       != ( ordered_pair @ SY187 @ SY188 ) ) )
                  | ~ ( in @ ( sK14_D @ C @ B @ A ) @ C ) )
                & ( ( ( in @ ( sK15_SY189 @ C @ B @ A ) @ A )
                    & ( in @ ( sK16_SY191 @ C @ B @ A ) @ B )
                    & ( ( sK14_D @ C @ B @ A )
                      = ( ordered_pair @ ( sK15_SY189 @ C @ B @ A ) @ ( sK16_SY191 @ C @ B @ A ) ) ) )
                  | ( in @ ( sK14_D @ C @ B @ A ) @ C ) ) )
              | ( C
                = ( cartesian_product2 @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( cartesian_product2 @ A @ B ) )
              | ( ! [D: $i] :
                    ( ! [E: $i,F: $i] :
                        ( ~ ( in @ E @ A )
                        | ~ ( in @ F @ B )
                        | ( D
                         != ( ordered_pair @ E @ F ) ) )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( ( in @ ( sK12_E @ D @ C @ B @ A ) @ A )
                      & ( in @ ( sK13_SY186 @ D @ C @ B @ A ) @ B )
                      & ( D
                        = ( ordered_pair @ ( sK12_E @ D @ C @ B @ A ) @ ( sK13_SY186 @ D @ C @ B @ A ) ) ) ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[209]) ).

thf(1282,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( in @ ( sK11_C @ B @ A ) @ A )
            & ~ ( in @ ( sK11_C @ B @ A ) @ B ) )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] :
              ( ~ ( in @ C @ A )
              | ( in @ C @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[208]) ).

thf(1283,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK10_D @ C @ B @ A ) @ A )
                  | ~ ( in @ ( sK10_D @ C @ B @ A ) @ B )
                  | ~ ( in @ ( sK10_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK10_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK10_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK10_D @ C @ B @ A ) @ B )
                  | ( in @ ( sK10_D @ C @ B @ A ) @ C ) ) )
              | ( C
                = ( set_intersection2 @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( set_intersection2 @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ A )
                    | ~ ( in @ D @ B )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ A ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ B ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[207]) ).

thf(1284,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ! [SY184: $i] :
                  ( ~ ( in @ ( sK8_C @ B @ A ) @ SY184 )
                  | ~ ( in @ SY184 @ A ) )
              | ~ ( in @ ( sK8_C @ B @ A ) @ B ) )
            & ( ( ( in @ ( sK8_C @ B @ A ) @ ( sK9_SY185 @ B @ A ) )
                & ( in @ ( sK9_SY185 @ B @ A ) @ A ) )
              | ( in @ ( sK8_C @ B @ A ) @ B ) ) )
          | ( B
            = ( union @ A ) ) )
      & ! [A: $i,B: $i] :
          ( ( B
           != ( union @ A ) )
          | ( ! [C: $i] :
                ( ! [D: $i] :
                    ( ~ ( in @ C @ D )
                    | ~ ( in @ D @ A ) )
                | ( in @ C @ B ) )
            & ! [C: $i] :
                ( ~ ( in @ C @ B )
                | ( ( in @ C @ ( sK7_D @ C @ B @ A ) )
                  & ( in @ ( sK7_D @ C @ B @ A ) @ A ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[206]) ).

thf(1285,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK6_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ B )
                  | ~ ( in @ ( sK6_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK6_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ C ) )
                & ( ~ ( in @ ( sK6_D @ C @ B @ A ) @ B )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ C ) ) )
              | ( C
                = ( set_difference @ A @ B ) ) )
          & ! [B: $i,C: $i] :
              ( ( C
               != ( set_difference @ A @ B ) )
              | ( ! [D: $i] :
                    ( ~ ( in @ D @ A )
                    | ( in @ D @ B )
                    | ( in @ D @ C ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ( in @ D @ A ) )
                & ! [D: $i] :
                    ( ~ ( in @ D @ C )
                    | ~ ( in @ D @ B ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[205]) ).

thf(1286,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ordered_pair @ A @ B )
          = ( unordered_pair @ ( unordered_pair @ A @ B ) @ ( singleton @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[124]) ).

thf(1287,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_intersection2 @ A @ B )
           != empty_set )
          | ( disjoint @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( ( set_intersection2 @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[204]) ).

thf(1288,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
          | ~ ( subset @ A @ B )
          | ( proper_subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ A @ B )
          | ( A != B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ A @ B )
          | ( subset @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[203]) ).

thf(1289,plain,
    $true = $true,
    inference(copy,[status(thm)],[121]) ).

thf(1290,plain,
    $true = $true,
    inference(copy,[status(thm)],[120]) ).

thf(1291,plain,
    $true = $true,
    inference(copy,[status(thm)],[119]) ).

thf(1292,plain,
    $true = $true,
    inference(copy,[status(thm)],[118]) ).

thf(1293,plain,
    $true = $true,
    inference(copy,[status(thm)],[117]) ).

thf(1294,plain,
    $true = $true,
    inference(copy,[status(thm)],[116]) ).

thf(1295,plain,
    $true = $true,
    inference(copy,[status(thm)],[115]) ).

thf(1296,plain,
    $true = $true,
    inference(copy,[status(thm)],[114]) ).

thf(1297,plain,
    $true = $true,
    inference(copy,[status(thm)],[113]) ).

thf(1298,plain,
    $true = $true,
    inference(copy,[status(thm)],[112]) ).

thf(1299,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(copy,[status(thm)],[111]) ).

thf(1300,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( empty @ ( ordered_pair @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[110]) ).

thf(1301,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[202]) ).

thf(1302,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[201]) ).

thf(1303,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[200]) ).

thf(1304,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ A )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[199]) ).

thf(1305,plain,
    ( ( ! [A: $i] :
          ~ ( proper_subset @ A @ A ) )
    = $true ),
    inference(copy,[status(thm)],[198]) ).

thf(1306,plain,
    ( ( empty @ sK5_A )
    = $true ),
    inference(copy,[status(thm)],[197]) ).

thf(1307,plain,
    ( ( ~ ( empty @ sK4_A ) )
    = $true ),
    inference(copy,[status(thm)],[196]) ).

thf(1308,plain,
    ( ( ! [A: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(copy,[status(thm)],[195]) ).

thf(1309,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( disjoint @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[194]) ).

thf(1310,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[100]) ).

thf(1311,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ empty_set )
          = empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[99]) ).

thf(1312,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ~ ( in @ ( sK3_C @ B @ A ) @ A )
              | ~ ( in @ ( sK3_C @ B @ A ) @ B ) )
            & ( ( in @ ( sK3_C @ B @ A ) @ A )
              | ( in @ ( sK3_C @ B @ A ) @ B ) ) )
          | ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[193]) ).

thf(1313,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ A @ empty_set )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[97]) ).

thf(1314,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ empty_set @ A )
          = empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[96]) ).

thf(1315,plain,
    ( ( ! [A: $i] :
          ( ~ ( empty @ A )
          | ( A = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[192]) ).

thf(1316,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ B )
          | ~ ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[191]) ).

thf(1317,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
          | ~ ( empty @ A )
          | ~ ( empty @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[190]) ).

thf(1318,plain,
    ( ( ( ( sK1_A = empty_set )
        | ( sK1_A
          = ( singleton @ sK2_SY183 ) ) )
      & ~ ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) ) )
    = $true ),
    inference(copy,[status(thm)],[189]) ).

thf(1319,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( in @ SX0 @ SX2 )
                  | ~ ( in @ SX1 @ SX2 )
                  | ( subset @ ( unordered_pair @ SX0 @ SX1 ) @ SX2 ) )
            | ~ ~ ( ~ ! [SX1: $i,SX2: $i] :
                        ( ~ ( subset @ ( unordered_pair @ SX0 @ SX1 ) @ SX2 )
                        | ( in @ SX0 @ SX2 ) )
                  | ~ ! [SX1: $i,SX2: $i] :
                        ( ~ ( subset @ ( unordered_pair @ SX0 @ SX1 ) @ SX2 )
                        | ( in @ SX1 @ SX2 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1253]) ).

thf(1320,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( ( set_difference @ SX0 @ SX1 )
                 != empty_set )
                | ( subset @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ SX1 )
                | ( ( set_difference @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1251]) ).

thf(1321,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( ( set_difference @ SX0 @ SX1 )
                 != SX0 )
                | ( disjoint @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( disjoint @ SX0 @ SX1 )
                | ( ( set_difference @ SX0 @ SX1 )
                  = SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1266]) ).

thf(1322,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( in @ SX0 @ SX1 )
                | ( subset @ ( singleton @ SX0 ) @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
                | ( in @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1252]) ).

thf(1323,plain,
    ( ( ~ ( ~ ( ( sK1_A = empty_set )
              | ( sK1_A
                = ( singleton @ sK2_SY183 ) ) )
          | ~ ~ ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1318]) ).

thf(1324,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( ( set_difference @ SX0 @ SX1 )
                 != empty_set )
                | ( subset @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ SX1 )
                | ( ( set_difference @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1234]) ).

thf(1325,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ( ! [SX3: $i,SX4: $i] :
                              ( ~ ( in @ SX3 @ SX0 )
                              | ~ ( in @ SX4 @ SX1 )
                              | ( ( sK14_D @ SX2 @ SX1 @ SX0 )
                               != ( ordered_pair @ SX3 @ SX4 ) ) )
                          | ~ ( in @ ( sK14_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                      | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SX2 @ SX1 @ SX0 ) @ SX0 )
                                    | ~ ( in @ ( sK16_SY191 @ SX2 @ SX1 @ SX0 ) @ SX1 ) )
                              | ( ( sK14_D @ SX2 @ SX1 @ SX0 )
                               != ( ordered_pair @ ( sK15_SY189 @ SX2 @ SX1 @ SX0 ) @ ( sK16_SY191 @ SX2 @ SX1 @ SX0 ) ) ) )
                          | ( in @ ( sK14_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) ) )
                  | ( SX2
                    = ( cartesian_product2 @ SX0 @ SX1 ) ) )
            | ~ ! [SX1: $i,SX2: $i] :
                  ( ( SX2
                   != ( cartesian_product2 @ SX0 @ SX1 ) )
                  | ~ ( ~ ! [SX3: $i] :
                            ( ! [SX4: $i,SX5: $i] :
                                ( ~ ( in @ SX4 @ SX0 )
                                | ~ ( in @ SX5 @ SX1 )
                                | ( SX3
                                 != ( ordered_pair @ SX4 @ SX5 ) ) )
                            | ( in @ SX3 @ SX2 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SX2 )
                            | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SX3 @ SX2 @ SX1 @ SX0 ) @ SX0 )
                                      | ~ ( in @ ( sK13_SY186 @ SX3 @ SX2 @ SX1 @ SX0 ) @ SX1 ) )
                                | ( SX3
                                 != ( ordered_pair @ ( sK12_E @ SX3 @ SX2 @ SX1 @ SX0 ) @ ( sK13_SY186 @ SX3 @ SX2 @ SX1 @ SX0 ) ) ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1281]) ).

thf(1326,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
                | ( SX0 = empty_set )
                | ( SX0
                  = ( singleton @ SX1 ) ) )
          | ~ ~ ( ~ ! [SX0: $i] :
                      ( ( SX0 != empty_set )
                      | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) )
                | ~ ! [SX0: $i,SX1: $i] :
                      ( ( SX0
                       != ( singleton @ SX1 ) )
                      | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1236]) ).

thf(1327,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( ( ( sK21_C @ SX1 @ SX0 )
                         != SX0 )
                        | ~ ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) )
                    | ~ ( ( ( sK21_C @ SX1 @ SX0 )
                          = SX0 )
                        | ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) ) )
                | ( SX1
                  = ( singleton @ SX0 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX1
                 != ( singleton @ SX0 ) )
                | ~ ( ~ ! [SX2: $i] :
                          ( ( SX2 != SX0 )
                          | ( in @ SX2 @ SX1 ) )
                    | ~ ! [SX2: $i] :
                          ( ~ ( in @ SX2 @ SX1 )
                          | ( SX2 = SX0 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1276]) ).

thf(1328,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                          | ~ ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                          | ~ ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                                | ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                            | ~ ( ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                                | ( in @ ( sK10_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) ) ) )
                  | ( SX2
                    = ( set_intersection2 @ SX0 @ SX1 ) ) )
            | ~ ! [SX1: $i,SX2: $i] :
                  ( ( SX2
                   != ( set_intersection2 @ SX0 @ SX1 ) )
                  | ~ ( ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SX0 )
                            | ~ ( in @ SX3 @ SX1 )
                            | ( in @ SX3 @ SX2 ) )
                      | ~ ~ ( ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX2 )
                                  | ( in @ SX3 @ SX0 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX2 )
                                  | ( in @ SX3 @ SX1 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1283]) ).

thf(1329,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ~ ( in @ ( sK3_C @ SX1 @ SX0 ) @ SX0 )
                  | ~ ( in @ ( sK3_C @ SX1 @ SX0 ) @ SX1 ) )
              | ~ ( ( in @ ( sK3_C @ SX1 @ SX0 ) @ SX0 )
                  | ( in @ ( sK3_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ( SX0 = SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1312]) ).

thf(1330,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ! [SX2: $i,SX3: $i] :
                  ( ~ ( in @ SX0 @ SX2 )
                  | ~ ( in @ SX1 @ SX3 )
                  | ( in @ ( ordered_pair @ SX0 @ SX1 ) @ ( cartesian_product2 @ SX2 @ SX3 ) ) )
            | ~ ~ ( ~ ! [SX2: $i] :
                        ( ! [SX3: $i] :
                            ~ ( in @ ( ordered_pair @ SX0 @ SX1 ) @ ( cartesian_product2 @ SX2 @ SX3 ) )
                        | ( in @ SX0 @ SX2 ) )
                  | ~ ! [SX2: $i,SX3: $i] :
                        ( ~ ( in @ ( ordered_pair @ SX0 @ SX1 ) @ ( cartesian_product2 @ SX2 @ SX3 ) )
                        | ( in @ SX1 @ SX3 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1238]) ).

thf(1331,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( SX0 = SX1 )
                | ~ ( subset @ SX0 @ SX1 )
                | ( proper_subset @ SX0 @ SX1 ) )
          | ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                      ( ~ ( proper_subset @ SX0 @ SX1 )
                      | ( SX0 != SX1 ) )
                | ~ ! [SX0: $i,SX1: $i] :
                      ( ~ ( proper_subset @ SX0 @ SX1 )
                      | ( subset @ SX0 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1288]) ).

thf(1332,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( ( set_intersection2 @ SX0 @ SX1 )
                 != empty_set )
                | ( disjoint @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( disjoint @ SX0 @ SX1 )
                | ( ( set_intersection2 @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1287]) ).

thf(1333,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ( ( sK18_D @ SX2 @ SX1 @ SX0 )
                                 != SX0 ) )
                            | ~ ( ~ ( in @ ( sK18_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ( ( sK18_D @ SX2 @ SX1 @ SX0 )
                                 != SX1 ) ) )
                      | ~ ( ( in @ ( sK18_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                          | ( ( sK18_D @ SX2 @ SX1 @ SX0 )
                            = SX0 )
                          | ( ( sK18_D @ SX2 @ SX1 @ SX0 )
                            = SX1 ) ) )
                  | ( SX2
                    = ( unordered_pair @ SX0 @ SX1 ) ) )
            | ~ ! [SX1: $i,SX2: $i] :
                  ( ( SX2
                   != ( unordered_pair @ SX0 @ SX1 ) )
                  | ~ ( ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SX2 )
                            | ( SX3 = SX0 )
                            | ( SX3 = SX1 ) )
                      | ~ ~ ( ~ ! [SX3: $i] :
                                  ( ( SX3 != SX0 )
                                  | ( in @ SX3 @ SX2 ) )
                            | ~ ! [SX3: $i] :
                                  ( ( SX3 != SX1 )
                                  | ( in @ SX3 @ SX2 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1279]) ).

thf(1334,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( disjoint @ SX0 @ SX1 )
                | ( in @ ( sK22_C @ SX1 @ SX0 ) @ ( set_intersection2 @ SX0 @ SX1 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ! [SX2: $i] :
                    ~ ( in @ SX2 @ ( set_intersection2 @ SX0 @ SX1 ) )
                | ~ ( disjoint @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1260]) ).

thf(1335,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                        | ~ ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) )
                    | ~ ( ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                        | ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) ) )
                | ( SX1
                  = ( powerset @ SX0 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX1
                 != ( powerset @ SX0 ) )
                | ~ ( ~ ! [SX2: $i] :
                          ( ~ ( in @ SX2 @ SX1 )
                          | ( subset @ SX2 @ SX0 ) )
                    | ~ ! [SX2: $i] :
                          ( ~ ( subset @ SX2 @ SX0 )
                          | ( in @ SX2 @ SX1 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1278]) ).

thf(1336,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ! [SX2: $i] :
                  ( ! [SX3: $i] :
                      ( ( ordered_pair @ SX0 @ SX1 )
                     != ( ordered_pair @ SX2 @ SX3 ) )
                  | ( SX0 = SX2 ) )
            | ~ ! [SX2: $i,SX3: $i] :
                  ( ( ( ordered_pair @ SX0 @ SX1 )
                   != ( ordered_pair @ SX2 @ SX3 ) )
                  | ( SX1 = SX3 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1249]) ).

thf(1337,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ~ ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) )
                            | ~ ( ~ ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ~ ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX1 ) ) )
                      | ~ ( ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                          | ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                          | ( in @ ( sK17_D @ SX2 @ SX1 @ SX0 ) @ SX1 ) ) )
                  | ( SX2
                    = ( set_union2 @ SX0 @ SX1 ) ) )
            | ~ ! [SX1: $i,SX2: $i] :
                  ( ( SX2
                   != ( set_union2 @ SX0 @ SX1 ) )
                  | ~ ( ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SX2 )
                            | ( in @ SX3 @ SX0 )
                            | ( in @ SX3 @ SX1 ) )
                      | ~ ~ ( ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX0 )
                                  | ( in @ SX3 @ SX2 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX1 )
                                  | ( in @ SX3 @ SX2 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1280]) ).

thf(1338,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( ! [SX2: $i] :
                            ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX2 )
                            | ~ ( in @ SX2 @ SX0 ) )
                        | ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) )
                    | ~ ( ~ ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ ( sK9_SY185 @ SX1 @ SX0 ) )
                            | ~ ( in @ ( sK9_SY185 @ SX1 @ SX0 ) @ SX0 ) )
                        | ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) ) )
                | ( SX1
                  = ( union @ SX0 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX1
                 != ( union @ SX0 ) )
                | ~ ( ~ ! [SX2: $i] :
                          ( ! [SX3: $i] :
                              ( ~ ( in @ SX2 @ SX3 )
                              | ~ ( in @ SX3 @ SX0 ) )
                          | ( in @ SX2 @ SX1 ) )
                    | ~ ! [SX2: $i] :
                          ( ~ ( in @ SX2 @ SX1 )
                          | ~ ( ~ ( in @ SX2 @ ( sK7_D @ SX2 @ SX1 @ SX0 ) )
                              | ~ ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1284]) ).

thf(1339,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                          | ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                          | ~ ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                                | ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                            | ~ ( ~ ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                                | ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) ) ) )
                  | ( SX2
                    = ( set_difference @ SX0 @ SX1 ) ) )
            | ~ ! [SX1: $i,SX2: $i] :
                  ( ( SX2
                   != ( set_difference @ SX0 @ SX1 ) )
                  | ~ ( ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SX0 )
                            | ( in @ SX3 @ SX1 )
                            | ( in @ SX3 @ SX2 ) )
                      | ~ ~ ( ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX2 )
                                  | ( in @ SX3 @ SX0 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SX2 )
                                  | ~ ( in @ SX3 @ SX1 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1285]) ).

thf(1340,plain,
    ( ( ~ ( ~ ! [SX0: $i] :
                ( ( in @ ( sK20_B @ SX0 ) @ SX0 )
                | ( SX0 = empty_set ) )
          | ~ ! [SX0: $i] :
                ( ( SX0 != empty_set )
                | ! [SX1: $i] :
                    ~ ( in @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1277]) ).

thf(1341,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( in @ SX0 @ SX1 )
                | ( subset @ ( singleton @ SX0 ) @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
                | ( in @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1233]) ).

thf(1342,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( disjoint @ SX0 @ SX1 )
                | ~ ( ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX0 )
                    | ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX0 )
                    | ~ ( in @ SX2 @ SX1 ) )
                | ~ ( disjoint @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1255]) ).

thf(1343,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ SX1 )
                | ~ ( subset @ SX1 @ SX0 )
                | ( SX0 = SX1 ) )
          | ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                      ( ( SX0 != SX1 )
                      | ( subset @ SX0 @ SX1 ) )
                | ~ ! [SX0: $i,SX1: $i] :
                      ( ( SX0 != SX1 )
                      | ( subset @ SX1 @ SX0 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1275]) ).

thf(1344,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX0 )
                    | ~ ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX1 ) )
                | ( subset @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ SX1 )
                | ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX0 )
                    | ( in @ SX2 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1282]) ).

thf(1345,plain,
    ! [SV245: $i] :
      ( ( ( ( singleton @ SV245 )
         != empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1229]) ).

thf(1346,plain,
    ! [SV246: $i] :
      ( ( ! [SY434: $i] :
            ( ~ ( in @ SV246 @ SY434 )
            | ( ( set_union2 @ ( singleton @ SV246 ) @ SY434 )
              = SY434 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1230]) ).

thf(1347,plain,
    ! [SV247: $i] :
      ( ( ! [SY435: $i] :
            ( ~ ( disjoint @ ( singleton @ SV247 ) @ SY435 )
            | ~ ( in @ SV247 @ SY435 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1231]) ).

thf(1348,plain,
    ! [SV248: $i] :
      ( ( ! [SY436: $i] :
            ( ( in @ SV248 @ SY436 )
            | ( disjoint @ ( singleton @ SV248 ) @ SY436 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1232]) ).

thf(1349,plain,
    ! [SV249: $i] :
      ( ( ! [SY437: $i] :
            ( ~ ( subset @ SV249 @ SY437 )
            | ! [SY438: $i] :
                ( ( in @ SY438 @ SV249 )
                | ( subset @ SV249 @ ( set_difference @ SY437 @ ( singleton @ SY438 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1235]) ).

thf(1350,plain,
    ! [SV250: $i] :
      ( ( ! [SY439: $i] :
            ( ~ ( in @ SV250 @ SY439 )
            | ( subset @ SV250 @ ( union @ SY439 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1237]) ).

thf(1351,plain,
    ! [SV251: $i] :
      ( ( ! [SY440: $i,SY441: $i,SY442: $i] :
            ( ( SV251 = SY442 )
            | ( SV251 = SY441 )
            | ( ( unordered_pair @ SV251 @ SY440 )
             != ( unordered_pair @ SY441 @ SY442 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1239]) ).

thf(1352,plain,
    ! [SV252: $i] :
      ( ( ! [SY443: $i] :
            ( ~ ( subset @ SV252 @ SY443 )
            | ( ( set_union2 @ SV252 @ SY443 )
              = SY443 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1240]) ).

thf(1353,plain,
    ! [SV253: $i] :
      ( ( ! [SY444: $i] : ( subset @ ( set_intersection2 @ SV253 @ SY444 ) @ SV253 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1241]) ).

thf(1354,plain,
    ! [SV254: $i] :
      ( ( ! [SY445: $i,SY446: $i] :
            ( ~ ( subset @ SV254 @ SY445 )
            | ~ ( subset @ SV254 @ SY446 )
            | ( subset @ SV254 @ ( set_intersection2 @ SY445 @ SY446 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1242]) ).

thf(1355,plain,
    ! [SV255: $i] :
      ( ( ! [SY447: $i,SY448: $i] :
            ( ~ ( subset @ SV255 @ SY447 )
            | ~ ( subset @ SY447 @ SY448 )
            | ( subset @ SV255 @ SY448 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1243]) ).

thf(1356,plain,
    ! [SV256: $i] :
      ( ( ! [SY449: $i] :
            ( ~ ( subset @ SV256 @ SY449 )
            | ! [SY450: $i] : ( subset @ ( set_intersection2 @ SV256 @ SY450 ) @ ( set_intersection2 @ SY449 @ SY450 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1245]) ).

thf(1357,plain,
    ! [SV257: $i] :
      ( ( ! [SY451: $i] :
            ( ~ ( subset @ SV257 @ SY451 )
            | ( ( set_intersection2 @ SV257 @ SY451 )
              = SV257 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1246]) ).

thf(1358,plain,
    ! [SV258: $i] :
      ( ( subset @ empty_set @ SV258 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1247]) ).

thf(1359,plain,
    ! [SV259: $i] :
      ( ( ! [SY452: $i] :
            ( ~ ( subset @ SV259 @ SY452 )
            | ! [SY453: $i] : ( subset @ ( set_difference @ SV259 @ SY453 ) @ ( set_difference @ SY452 @ SY453 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1248]) ).

thf(1360,plain,
    ! [SV260: $i] :
      ( ( ! [SY454: $i] : ( subset @ ( set_difference @ SV260 @ SY454 ) @ SV260 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1250]) ).

thf(1361,plain,
    ! [SV261: $i] :
      ( ( ! [SY455: $i] :
            ( ( set_union2 @ SV261 @ ( set_difference @ SY455 @ SV261 ) )
            = ( set_union2 @ SV261 @ SY455 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1254]) ).

thf(1362,plain,
    ! [SV262: $i] :
      ( ( ~ ( subset @ SV262 @ empty_set )
        | ( SV262 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1256]) ).

thf(1363,plain,
    ! [SV263: $i] :
      ( ( ! [SY456: $i] :
            ( ( set_difference @ ( set_union2 @ SV263 @ SY456 ) @ SY456 )
            = ( set_difference @ SV263 @ SY456 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1257]) ).

thf(1364,plain,
    ! [SV264: $i] :
      ( ( ! [SY457: $i] :
            ( ~ ( subset @ SV264 @ SY457 )
            | ( SY457
              = ( set_union2 @ SV264 @ ( set_difference @ SY457 @ SV264 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1258]) ).

thf(1365,plain,
    ! [SV265: $i] :
      ( ( ! [SY458: $i] :
            ( ( set_difference @ SV265 @ ( set_difference @ SV265 @ SY458 ) )
            = ( set_intersection2 @ SV265 @ SY458 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1259]) ).

thf(1366,plain,
    ! [SV266: $i] :
      ( ( ! [SY459: $i] :
            ( ~ ( proper_subset @ SY459 @ SV266 )
            | ~ ( subset @ SV266 @ SY459 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1261]) ).

thf(1367,plain,
    ! [SV267: $i] :
      ( ( ! [SY460: $i,SY461: $i] :
            ( ~ ( disjoint @ SY460 @ SY461 )
            | ~ ( subset @ SV267 @ SY460 )
            | ( disjoint @ SV267 @ SY461 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1262]) ).

thf(1368,plain,
    ! [SV268: $i] :
      ( ( ( unordered_pair @ SV268 @ SV268 )
        = ( singleton @ SV268 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1263]) ).

thf(1369,plain,
    ! [SV269: $i] :
      ( ( ! [SY462: $i] :
            ( ~ ( subset @ ( singleton @ SV269 ) @ ( singleton @ SY462 ) )
            | ( SV269 = SY462 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1264]) ).

thf(1370,plain,
    ! [SV270: $i] :
      ( ( ! [SY463: $i] : ( subset @ SV270 @ ( set_union2 @ SV270 @ SY463 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1265]) ).

thf(1371,plain,
    ! [SV271: $i] :
      ( ( ! [SY464: $i,SY465: $i] :
            ( ~ ( subset @ SV271 @ SY464 )
            | ~ ( subset @ SY465 @ SY464 )
            | ( subset @ ( set_union2 @ SV271 @ SY465 ) @ SY464 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1267]) ).

thf(1372,plain,
    ! [SV272: $i] :
      ( ( ! [SY466: $i] :
            ( ! [SY467: $i] :
                ( ( singleton @ SV272 )
               != ( unordered_pair @ SY466 @ SY467 ) )
            | ( SV272 = SY466 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1268]) ).

thf(1373,plain,
    ! [SV273: $i] :
      ( ( ! [SY468: $i,SY469: $i] :
            ( ( ( singleton @ SV273 )
             != ( unordered_pair @ SY468 @ SY469 ) )
            | ( SY468 = SY469 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1269]) ).

thf(1374,plain,
    ! [SV274: $i] :
      ( ( ! [SY470: $i] :
            ( ~ ( in @ SV274 @ SY470 )
            | ~ ( in @ SY470 @ SV274 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1270]) ).

thf(1375,plain,
    ! [SV275: $i] :
      ( ( ! [SY471: $i] :
            ( ~ ( proper_subset @ SV275 @ SY471 )
            | ~ ( proper_subset @ SY471 @ SV275 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1271]) ).

thf(1376,plain,
    ! [SV276: $i] :
      ( ( ! [SY472: $i] :
            ( ( unordered_pair @ SV276 @ SY472 )
            = ( unordered_pair @ SY472 @ SV276 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1272]) ).

thf(1377,plain,
    ! [SV277: $i] :
      ( ( ! [SY473: $i] :
            ( ( set_union2 @ SV277 @ SY473 )
            = ( set_union2 @ SY473 @ SV277 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1273]) ).

thf(1378,plain,
    ! [SV278: $i] :
      ( ( ! [SY474: $i] :
            ( ( set_intersection2 @ SV278 @ SY474 )
            = ( set_intersection2 @ SY474 @ SV278 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1274]) ).

thf(1379,plain,
    ! [SV279: $i] :
      ( ( ! [SY475: $i] :
            ( ( ordered_pair @ SV279 @ SY475 )
            = ( unordered_pair @ ( unordered_pair @ SV279 @ SY475 ) @ ( singleton @ SV279 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1286]) ).

thf(1380,plain,
    ! [SV280: $i] :
      ( ( ! [SY476: $i] :
            ~ ( empty @ ( ordered_pair @ SV280 @ SY476 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1300]) ).

thf(1381,plain,
    ! [SV281: $i] :
      ( ( ( empty @ SV281 )
        | ! [SY477: $i] :
            ~ ( empty @ ( set_union2 @ SV281 @ SY477 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1301]) ).

thf(1382,plain,
    ! [SV282: $i] :
      ( ( ( empty @ SV282 )
        | ! [SY478: $i] :
            ~ ( empty @ ( set_union2 @ SY478 @ SV282 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1302]) ).

thf(1383,plain,
    ! [SV283: $i] :
      ( ( ( set_union2 @ SV283 @ SV283 )
        = SV283 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1303]) ).

thf(1384,plain,
    ! [SV284: $i] :
      ( ( ( set_intersection2 @ SV284 @ SV284 )
        = SV284 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1304]) ).

thf(1385,plain,
    ! [SV285: $i] :
      ( ( ~ ( proper_subset @ SV285 @ SV285 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1305]) ).

thf(1386,plain,
    ( ( empty @ sK4_A )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1307]) ).

thf(1387,plain,
    ! [SV286: $i] :
      ( ( subset @ SV286 @ SV286 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1308]) ).

thf(1388,plain,
    ! [SV287: $i] :
      ( ( ! [SY479: $i] :
            ( ~ ( disjoint @ SV287 @ SY479 )
            | ( disjoint @ SY479 @ SV287 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1309]) ).

thf(1389,plain,
    ! [SV288: $i] :
      ( ( ( set_union2 @ SV288 @ empty_set )
        = SV288 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1310]) ).

thf(1390,plain,
    ! [SV289: $i] :
      ( ( ( set_intersection2 @ SV289 @ empty_set )
        = empty_set )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1311]) ).

thf(1391,plain,
    ! [SV290: $i] :
      ( ( ( set_difference @ SV290 @ empty_set )
        = SV290 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1313]) ).

thf(1392,plain,
    ! [SV291: $i] :
      ( ( ( set_difference @ empty_set @ SV291 )
        = empty_set )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1314]) ).

thf(1393,plain,
    ! [SV292: $i] :
      ( ( ~ ( empty @ SV292 )
        | ( SV292 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1315]) ).

thf(1394,plain,
    ! [SV293: $i] :
      ( ( ! [SY480: $i] :
            ( ~ ( empty @ SY480 )
            | ~ ( in @ SV293 @ SY480 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1316]) ).

thf(1395,plain,
    ! [SV294: $i] :
      ( ( ! [SY481: $i] :
            ( ( SV294 = SY481 )
            | ~ ( empty @ SV294 )
            | ~ ( empty @ SY481 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1317]) ).

thf(1396,plain,
    ! [SV295: $i] :
      ( ( ~ ( ~ ! [SY482: $i,SY483: $i] :
                  ( ~ ( in @ SV295 @ SY483 )
                  | ~ ( in @ SY482 @ SY483 )
                  | ( subset @ ( unordered_pair @ SV295 @ SY482 ) @ SY483 ) )
            | ~ ~ ( ~ ! [SY484: $i,SY485: $i] :
                        ( ~ ( subset @ ( unordered_pair @ SV295 @ SY484 ) @ SY485 )
                        | ( in @ SV295 @ SY485 ) )
                  | ~ ! [SY486: $i,SY487: $i] :
                        ( ~ ( subset @ ( unordered_pair @ SV295 @ SY486 ) @ SY487 )
                        | ( in @ SY486 @ SY487 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1319]) ).

thf(1397,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != empty_set )
            | ( subset @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1320]) ).

thf(1398,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != SX0 )
            | ( disjoint @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( disjoint @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = SX0 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1321]) ).

thf(1399,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( in @ SX0 @ SX1 )
            | ( subset @ ( singleton @ SX0 ) @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
            | ( in @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1322]) ).

thf(1400,plain,
    ( ( ~ ( ( sK1_A = empty_set )
          | ( sK1_A
            = ( singleton @ sK2_SY183 ) ) )
      | ~ ~ ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1323]) ).

thf(1401,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != empty_set )
            | ( subset @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1324]) ).

thf(1402,plain,
    ! [SV296: $i] :
      ( ( ~ ( ~ ! [SY488: $i,SY489: $i] :
                  ( ~ ( ~ ( ! [SY490: $i,SY491: $i] :
                              ( ~ ( in @ SY490 @ SV296 )
                              | ~ ( in @ SY491 @ SY488 )
                              | ( ( sK14_D @ SY489 @ SY488 @ SV296 )
                               != ( ordered_pair @ SY490 @ SY491 ) ) )
                          | ~ ( in @ ( sK14_D @ SY489 @ SY488 @ SV296 ) @ SY489 ) )
                      | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SY489 @ SY488 @ SV296 ) @ SV296 )
                                    | ~ ( in @ ( sK16_SY191 @ SY489 @ SY488 @ SV296 ) @ SY488 ) )
                              | ( ( sK14_D @ SY489 @ SY488 @ SV296 )
                               != ( ordered_pair @ ( sK15_SY189 @ SY489 @ SY488 @ SV296 ) @ ( sK16_SY191 @ SY489 @ SY488 @ SV296 ) ) ) )
                          | ( in @ ( sK14_D @ SY489 @ SY488 @ SV296 ) @ SY489 ) ) )
                  | ( SY489
                    = ( cartesian_product2 @ SV296 @ SY488 ) ) )
            | ~ ! [SY492: $i,SY493: $i] :
                  ( ( SY493
                   != ( cartesian_product2 @ SV296 @ SY492 ) )
                  | ~ ( ~ ! [SY494: $i] :
                            ( ! [SY495: $i,SY496: $i] :
                                ( ~ ( in @ SY495 @ SV296 )
                                | ~ ( in @ SY496 @ SY492 )
                                | ( SY494
                                 != ( ordered_pair @ SY495 @ SY496 ) ) )
                            | ( in @ SY494 @ SY493 ) )
                      | ~ ! [SY497: $i] :
                            ( ~ ( in @ SY497 @ SY493 )
                            | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY497 @ SY493 @ SY492 @ SV296 ) @ SV296 )
                                      | ~ ( in @ ( sK13_SY186 @ SY497 @ SY493 @ SY492 @ SV296 ) @ SY492 ) )
                                | ( SY497
                                 != ( ordered_pair @ ( sK12_E @ SY497 @ SY493 @ SY492 @ SV296 ) @ ( sK13_SY186 @ SY497 @ SY493 @ SY492 @ SV296 ) ) ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1325]) ).

thf(1403,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
            | ( SX0 = empty_set )
            | ( SX0
              = ( singleton @ SX1 ) ) )
      | ~ ~ ( ~ ! [SX0: $i] :
                  ( ( SX0 != empty_set )
                  | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0
                   != ( singleton @ SX1 ) )
                  | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1326]) ).

thf(1404,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ( ( sK21_C @ SX1 @ SX0 )
                     != SX0 )
                    | ~ ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ( ( sK21_C @ SX1 @ SX0 )
                      = SX0 )
                    | ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) ) )
            | ( SX1
              = ( singleton @ SX0 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( singleton @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ( SX2 != SX0 )
                      | ( in @ SX2 @ SX1 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ( SX2 = SX0 ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1327]) ).

thf(1405,plain,
    ! [SV297: $i] :
      ( ( ~ ( ~ ! [SY498: $i,SY499: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SV297 )
                          | ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY498 )
                          | ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SV297 )
                                | ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) )
                            | ~ ( ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY498 )
                                | ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) ) ) )
                  | ( SY499
                    = ( set_intersection2 @ SV297 @ SY498 ) ) )
            | ~ ! [SY500: $i,SY501: $i] :
                  ( ( SY501
                   != ( set_intersection2 @ SV297 @ SY500 ) )
                  | ~ ( ~ ! [SY502: $i] :
                            ( ~ ( in @ SY502 @ SV297 )
                            | ~ ( in @ SY502 @ SY500 )
                            | ( in @ SY502 @ SY501 ) )
                      | ~ ~ ( ~ ! [SY503: $i] :
                                  ( ~ ( in @ SY503 @ SY501 )
                                  | ( in @ SY503 @ SV297 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SY501 )
                                  | ( in @ SX3 @ SY500 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1328]) ).

thf(1406,plain,
    ! [SV298: $i] :
      ( ( ! [SY505: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK3_C @ SY505 @ SV298 ) @ SV298 )
                    | ~ ( in @ ( sK3_C @ SY505 @ SV298 ) @ SY505 ) )
                | ~ ( ( in @ ( sK3_C @ SY505 @ SV298 ) @ SV298 )
                    | ( in @ ( sK3_C @ SY505 @ SV298 ) @ SY505 ) ) )
            | ( SV298 = SY505 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1329]) ).

thf(1407,plain,
    ! [SV299: $i] :
      ( ( ! [SY506: $i] :
            ~ ( ~ ! [SY507: $i,SY508: $i] :
                    ( ~ ( in @ SV299 @ SY507 )
                    | ~ ( in @ SY506 @ SY508 )
                    | ( in @ ( ordered_pair @ SV299 @ SY506 ) @ ( cartesian_product2 @ SY507 @ SY508 ) ) )
              | ~ ~ ( ~ ! [SY509: $i] :
                          ( ! [SY510: $i] :
                              ~ ( in @ ( ordered_pair @ SV299 @ SY506 ) @ ( cartesian_product2 @ SY509 @ SY510 ) )
                          | ( in @ SV299 @ SY509 ) )
                    | ~ ! [SY511: $i,SY512: $i] :
                          ( ~ ( in @ ( ordered_pair @ SV299 @ SY506 ) @ ( cartesian_product2 @ SY511 @ SY512 ) )
                          | ( in @ SY506 @ SY512 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1330]) ).

thf(1408,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 = SX1 )
            | ~ ( subset @ SX0 @ SX1 )
            | ( proper_subset @ SX0 @ SX1 ) )
      | ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                  ( ~ ( proper_subset @ SX0 @ SX1 )
                  | ( SX0 != SX1 ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ~ ( proper_subset @ SX0 @ SX1 )
                  | ( subset @ SX0 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1331]) ).

thf(1409,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_intersection2 @ SX0 @ SX1 )
             != empty_set )
            | ( disjoint @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( disjoint @ SX0 @ SX1 )
            | ( ( set_intersection2 @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1332]) ).

thf(1410,plain,
    ! [SV300: $i] :
      ( ( ~ ( ~ ! [SY513: $i,SY514: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                                | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                                 != SV300 ) )
                            | ~ ( ~ ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                                | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                                 != SY513 ) ) )
                      | ~ ( ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                          | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                            = SV300 )
                          | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                            = SY513 ) ) )
                  | ( SY514
                    = ( unordered_pair @ SV300 @ SY513 ) ) )
            | ~ ! [SY515: $i,SY516: $i] :
                  ( ( SY516
                   != ( unordered_pair @ SV300 @ SY515 ) )
                  | ~ ( ~ ! [SY517: $i] :
                            ( ~ ( in @ SY517 @ SY516 )
                            | ( SY517 = SV300 )
                            | ( SY517 = SY515 ) )
                      | ~ ~ ( ~ ! [SY518: $i] :
                                  ( ( SY518 != SV300 )
                                  | ( in @ SY518 @ SY516 ) )
                            | ~ ! [SX3: $i] :
                                  ( ( SX3 != SY515 )
                                  | ( in @ SX3 @ SY516 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1333]) ).

thf(1411,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ( in @ ( sK22_C @ SX1 @ SX0 ) @ ( set_intersection2 @ SX0 @ SX1 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ! [SX2: $i] :
                ~ ( in @ SX2 @ ( set_intersection2 @ SX0 @ SX1 ) )
            | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1334]) ).

thf(1412,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                    | ~ ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) )
                | ~ ( ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                    | ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) ) )
            | ( SX1
              = ( powerset @ SX0 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( powerset @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ( subset @ SX2 @ SX0 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( subset @ SX2 @ SX0 )
                      | ( in @ SX2 @ SX1 ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1335]) ).

thf(1413,plain,
    ! [SV301: $i] :
      ( ( ! [SY520: $i] :
            ~ ( ~ ! [SY521: $i] :
                    ( ! [SY522: $i] :
                        ( ( ordered_pair @ SV301 @ SY520 )
                       != ( ordered_pair @ SY521 @ SY522 ) )
                    | ( SV301 = SY521 ) )
              | ~ ! [SY523: $i,SY524: $i] :
                    ( ( ( ordered_pair @ SV301 @ SY520 )
                     != ( ordered_pair @ SY523 @ SY524 ) )
                    | ( SY520 = SY524 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1336]) ).

thf(1414,plain,
    ! [SV302: $i] :
      ( ( ~ ( ~ ! [SY525: $i,SY526: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                                | ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SV302 ) )
                            | ~ ( ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                                | ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY525 ) ) )
                      | ~ ( ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                          | ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SV302 )
                          | ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY525 ) ) )
                  | ( SY526
                    = ( set_union2 @ SV302 @ SY525 ) ) )
            | ~ ! [SY527: $i,SY528: $i] :
                  ( ( SY528
                   != ( set_union2 @ SV302 @ SY527 ) )
                  | ~ ( ~ ! [SY529: $i] :
                            ( ~ ( in @ SY529 @ SY528 )
                            | ( in @ SY529 @ SV302 )
                            | ( in @ SY529 @ SY527 ) )
                      | ~ ~ ( ~ ! [SY530: $i] :
                                  ( ~ ( in @ SY530 @ SV302 )
                                  | ( in @ SY530 @ SY528 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SY527 )
                                  | ( in @ SX3 @ SY528 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1337]) ).

thf(1415,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ! [SX2: $i] :
                        ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX2 )
                        | ~ ( in @ SX2 @ SX0 ) )
                    | ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ~ ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ ( sK9_SY185 @ SX1 @ SX0 ) )
                        | ~ ( in @ ( sK9_SY185 @ SX1 @ SX0 ) @ SX0 ) )
                    | ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) ) )
            | ( SX1
              = ( union @ SX0 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( union @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ! [SX3: $i] :
                          ( ~ ( in @ SX2 @ SX3 )
                          | ~ ( in @ SX3 @ SX0 ) )
                      | ( in @ SX2 @ SX1 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ~ ( ~ ( in @ SX2 @ ( sK7_D @ SX2 @ SX1 @ SX0 ) )
                          | ~ ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1338]) ).

thf(1416,plain,
    ! [SV303: $i] :
      ( ( ~ ( ~ ! [SY532: $i,SY533: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SV303 )
                          | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY532 )
                          | ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SV303 )
                                | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) )
                            | ~ ( ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY532 )
                                | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) ) ) )
                  | ( SY533
                    = ( set_difference @ SV303 @ SY532 ) ) )
            | ~ ! [SY534: $i,SY535: $i] :
                  ( ( SY535
                   != ( set_difference @ SV303 @ SY534 ) )
                  | ~ ( ~ ! [SY536: $i] :
                            ( ~ ( in @ SY536 @ SV303 )
                            | ( in @ SY536 @ SY534 )
                            | ( in @ SY536 @ SY535 ) )
                      | ~ ~ ( ~ ! [SY537: $i] :
                                  ( ~ ( in @ SY537 @ SY535 )
                                  | ( in @ SY537 @ SV303 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SY535 )
                                  | ~ ( in @ SX3 @ SY534 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1339]) ).

thf(1417,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( in @ ( sK20_B @ SX0 ) @ SX0 )
            | ( SX0 = empty_set ) )
      | ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] :
                ~ ( in @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1340]) ).

thf(1418,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( in @ SX0 @ SX1 )
            | ( subset @ ( singleton @ SX0 ) @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
            | ( in @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1341]) ).

thf(1419,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ~ ( ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX1 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ! [SX2: $i] :
                ( ~ ( in @ SX2 @ SX0 )
                | ~ ( in @ SX2 @ SX1 ) )
            | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1342]) ).

thf(1420,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ~ ( subset @ SX1 @ SX0 )
            | ( SX0 = SX1 ) )
      | ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0 != SX1 )
                  | ( subset @ SX0 @ SX1 ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0 != SX1 )
                  | ( subset @ SX1 @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1343]) ).

thf(1421,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX1 ) )
            | ( subset @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ! [SX2: $i] :
                ( ~ ( in @ SX2 @ SX0 )
                | ( in @ SX2 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1344]) ).

thf(1422,plain,
    ! [SV245: $i] :
      ( ( ( singleton @ SV245 )
        = empty_set )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1345]) ).

thf(1423,plain,
    ! [SV304: $i,SV246: $i] :
      ( ( ~ ( in @ SV246 @ SV304 )
        | ( ( set_union2 @ ( singleton @ SV246 ) @ SV304 )
          = SV304 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1346]) ).

thf(1424,plain,
    ! [SV305: $i,SV247: $i] :
      ( ( ~ ( disjoint @ ( singleton @ SV247 ) @ SV305 )
        | ~ ( in @ SV247 @ SV305 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1347]) ).

thf(1425,plain,
    ! [SV306: $i,SV248: $i] :
      ( ( ( in @ SV248 @ SV306 )
        | ( disjoint @ ( singleton @ SV248 ) @ SV306 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1348]) ).

thf(1426,plain,
    ! [SV307: $i,SV249: $i] :
      ( ( ~ ( subset @ SV249 @ SV307 )
        | ! [SY539: $i] :
            ( ( in @ SY539 @ SV249 )
            | ( subset @ SV249 @ ( set_difference @ SV307 @ ( singleton @ SY539 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1349]) ).

thf(1427,plain,
    ! [SV308: $i,SV250: $i] :
      ( ( ~ ( in @ SV250 @ SV308 )
        | ( subset @ SV250 @ ( union @ SV308 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1350]) ).

thf(1428,plain,
    ! [SV309: $i,SV251: $i] :
      ( ( ! [SY540: $i,SY541: $i] :
            ( ( SV251 = SY541 )
            | ( SV251 = SY540 )
            | ( ( unordered_pair @ SV251 @ SV309 )
             != ( unordered_pair @ SY540 @ SY541 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1351]) ).

thf(1429,plain,
    ! [SV310: $i,SV252: $i] :
      ( ( ~ ( subset @ SV252 @ SV310 )
        | ( ( set_union2 @ SV252 @ SV310 )
          = SV310 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1352]) ).

thf(1430,plain,
    ! [SV311: $i,SV253: $i] :
      ( ( subset @ ( set_intersection2 @ SV253 @ SV311 ) @ SV253 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1353]) ).

thf(1431,plain,
    ! [SV312: $i,SV254: $i] :
      ( ( ! [SY542: $i] :
            ( ~ ( subset @ SV254 @ SV312 )
            | ~ ( subset @ SV254 @ SY542 )
            | ( subset @ SV254 @ ( set_intersection2 @ SV312 @ SY542 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1354]) ).

thf(1432,plain,
    ! [SV313: $i,SV255: $i] :
      ( ( ! [SY543: $i] :
            ( ~ ( subset @ SV255 @ SV313 )
            | ~ ( subset @ SV313 @ SY543 )
            | ( subset @ SV255 @ SY543 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1355]) ).

thf(1433,plain,
    ! [SV314: $i,SV256: $i] :
      ( ( ~ ( subset @ SV256 @ SV314 )
        | ! [SY544: $i] : ( subset @ ( set_intersection2 @ SV256 @ SY544 ) @ ( set_intersection2 @ SV314 @ SY544 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1356]) ).

thf(1434,plain,
    ! [SV315: $i,SV257: $i] :
      ( ( ~ ( subset @ SV257 @ SV315 )
        | ( ( set_intersection2 @ SV257 @ SV315 )
          = SV257 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1357]) ).

thf(1435,plain,
    ! [SV316: $i,SV259: $i] :
      ( ( ~ ( subset @ SV259 @ SV316 )
        | ! [SY545: $i] : ( subset @ ( set_difference @ SV259 @ SY545 ) @ ( set_difference @ SV316 @ SY545 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1359]) ).

thf(1436,plain,
    ! [SV317: $i,SV260: $i] :
      ( ( subset @ ( set_difference @ SV260 @ SV317 ) @ SV260 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1360]) ).

thf(1437,plain,
    ! [SV318: $i,SV261: $i] :
      ( ( ( set_union2 @ SV261 @ ( set_difference @ SV318 @ SV261 ) )
        = ( set_union2 @ SV261 @ SV318 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1361]) ).

thf(1438,plain,
    ! [SV262: $i] :
      ( ( ( ~ ( subset @ SV262 @ empty_set ) )
        = $true )
      | ( ( SV262 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1362]) ).

thf(1439,plain,
    ! [SV319: $i,SV263: $i] :
      ( ( ( set_difference @ ( set_union2 @ SV263 @ SV319 ) @ SV319 )
        = ( set_difference @ SV263 @ SV319 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1363]) ).

thf(1440,plain,
    ! [SV320: $i,SV264: $i] :
      ( ( ~ ( subset @ SV264 @ SV320 )
        | ( SV320
          = ( set_union2 @ SV264 @ ( set_difference @ SV320 @ SV264 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1364]) ).

thf(1441,plain,
    ! [SV321: $i,SV265: $i] :
      ( ( ( set_difference @ SV265 @ ( set_difference @ SV265 @ SV321 ) )
        = ( set_intersection2 @ SV265 @ SV321 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1365]) ).

thf(1442,plain,
    ! [SV266: $i,SV322: $i] :
      ( ( ~ ( proper_subset @ SV322 @ SV266 )
        | ~ ( subset @ SV266 @ SV322 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1366]) ).

thf(1443,plain,
    ! [SV267: $i,SV323: $i] :
      ( ( ! [SY546: $i] :
            ( ~ ( disjoint @ SV323 @ SY546 )
            | ~ ( subset @ SV267 @ SV323 )
            | ( disjoint @ SV267 @ SY546 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1367]) ).

thf(1444,plain,
    ! [SV324: $i,SV269: $i] :
      ( ( ~ ( subset @ ( singleton @ SV269 ) @ ( singleton @ SV324 ) )
        | ( SV269 = SV324 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1369]) ).

thf(1445,plain,
    ! [SV325: $i,SV270: $i] :
      ( ( subset @ SV270 @ ( set_union2 @ SV270 @ SV325 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1370]) ).

thf(1446,plain,
    ! [SV326: $i,SV271: $i] :
      ( ( ! [SY547: $i] :
            ( ~ ( subset @ SV271 @ SV326 )
            | ~ ( subset @ SY547 @ SV326 )
            | ( subset @ ( set_union2 @ SV271 @ SY547 ) @ SV326 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1371]) ).

thf(1447,plain,
    ! [SV327: $i,SV272: $i] :
      ( ( ! [SY548: $i] :
            ( ( singleton @ SV272 )
           != ( unordered_pair @ SV327 @ SY548 ) )
        | ( SV272 = SV327 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1372]) ).

thf(1448,plain,
    ! [SV328: $i,SV273: $i] :
      ( ( ! [SY549: $i] :
            ( ( ( singleton @ SV273 )
             != ( unordered_pair @ SV328 @ SY549 ) )
            | ( SV328 = SY549 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1373]) ).

thf(1449,plain,
    ! [SV329: $i,SV274: $i] :
      ( ( ~ ( in @ SV274 @ SV329 )
        | ~ ( in @ SV329 @ SV274 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1374]) ).

thf(1450,plain,
    ! [SV330: $i,SV275: $i] :
      ( ( ~ ( proper_subset @ SV275 @ SV330 )
        | ~ ( proper_subset @ SV330 @ SV275 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1375]) ).

thf(1451,plain,
    ! [SV331: $i,SV276: $i] :
      ( ( ( unordered_pair @ SV276 @ SV331 )
        = ( unordered_pair @ SV331 @ SV276 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1376]) ).

thf(1452,plain,
    ! [SV332: $i,SV277: $i] :
      ( ( ( set_union2 @ SV277 @ SV332 )
        = ( set_union2 @ SV332 @ SV277 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1377]) ).

thf(1453,plain,
    ! [SV333: $i,SV278: $i] :
      ( ( ( set_intersection2 @ SV278 @ SV333 )
        = ( set_intersection2 @ SV333 @ SV278 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1378]) ).

thf(1454,plain,
    ! [SV334: $i,SV279: $i] :
      ( ( ( ordered_pair @ SV279 @ SV334 )
        = ( unordered_pair @ ( unordered_pair @ SV279 @ SV334 ) @ ( singleton @ SV279 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1379]) ).

thf(1455,plain,
    ! [SV335: $i,SV280: $i] :
      ( ( ~ ( empty @ ( ordered_pair @ SV280 @ SV335 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1380]) ).

thf(1456,plain,
    ! [SV281: $i] :
      ( ( ( empty @ SV281 )
        = $true )
      | ( ( ! [SY477: $i] :
              ~ ( empty @ ( set_union2 @ SV281 @ SY477 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1381]) ).

thf(1457,plain,
    ! [SV282: $i] :
      ( ( ( empty @ SV282 )
        = $true )
      | ( ( ! [SY478: $i] :
              ~ ( empty @ ( set_union2 @ SY478 @ SV282 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1382]) ).

thf(1458,plain,
    ! [SV285: $i] :
      ( ( proper_subset @ SV285 @ SV285 )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1385]) ).

thf(1459,plain,
    ! [SV336: $i,SV287: $i] :
      ( ( ~ ( disjoint @ SV287 @ SV336 )
        | ( disjoint @ SV336 @ SV287 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1388]) ).

thf(1460,plain,
    ! [SV292: $i] :
      ( ( ( ~ ( empty @ SV292 ) )
        = $true )
      | ( ( SV292 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1393]) ).

thf(1461,plain,
    ! [SV293: $i,SV337: $i] :
      ( ( ~ ( empty @ SV337 )
        | ~ ( in @ SV293 @ SV337 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1394]) ).

thf(1462,plain,
    ! [SV338: $i,SV294: $i] :
      ( ( ( SV294 = SV338 )
        | ~ ( empty @ SV294 )
        | ~ ( empty @ SV338 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1395]) ).

thf(1463,plain,
    ! [SV295: $i] :
      ( ( ~ ! [SY482: $i,SY483: $i] :
              ( ~ ( in @ SV295 @ SY483 )
              | ~ ( in @ SY482 @ SY483 )
              | ( subset @ ( unordered_pair @ SV295 @ SY482 ) @ SY483 ) )
        | ~ ~ ( ~ ! [SY484: $i,SY485: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV295 @ SY484 ) @ SY485 )
                    | ( in @ SV295 @ SY485 ) )
              | ~ ! [SY486: $i,SY487: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV295 @ SY486 ) @ SY487 )
                    | ( in @ SY486 @ SY487 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1396]) ).

thf(1464,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != empty_set )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1397]) ).

thf(1465,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1397]) ).

thf(1466,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != SX0 )
            | ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1398]) ).

thf(1467,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( disjoint @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1398]) ).

thf(1468,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( in @ SX0 @ SX1 )
            | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1399]) ).

thf(1469,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
            | ( in @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1399]) ).

thf(1470,plain,
    ( ( ~ ( ( sK1_A = empty_set )
          | ( sK1_A
            = ( singleton @ sK2_SY183 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1400]) ).

thf(1471,plain,
    ( ( ~ ~ ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1400]) ).

thf(1472,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != empty_set )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1401]) ).

thf(1473,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1401]) ).

thf(1474,plain,
    ! [SV296: $i] :
      ( ( ~ ! [SY488: $i,SY489: $i] :
              ( ~ ( ~ ( ! [SY490: $i,SY491: $i] :
                          ( ~ ( in @ SY490 @ SV296 )
                          | ~ ( in @ SY491 @ SY488 )
                          | ( ( sK14_D @ SY489 @ SY488 @ SV296 )
                           != ( ordered_pair @ SY490 @ SY491 ) ) )
                      | ~ ( in @ ( sK14_D @ SY489 @ SY488 @ SV296 ) @ SY489 ) )
                  | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SY489 @ SY488 @ SV296 ) @ SV296 )
                                | ~ ( in @ ( sK16_SY191 @ SY489 @ SY488 @ SV296 ) @ SY488 ) )
                          | ( ( sK14_D @ SY489 @ SY488 @ SV296 )
                           != ( ordered_pair @ ( sK15_SY189 @ SY489 @ SY488 @ SV296 ) @ ( sK16_SY191 @ SY489 @ SY488 @ SV296 ) ) ) )
                      | ( in @ ( sK14_D @ SY489 @ SY488 @ SV296 ) @ SY489 ) ) )
              | ( SY489
                = ( cartesian_product2 @ SV296 @ SY488 ) ) )
        | ~ ! [SY492: $i,SY493: $i] :
              ( ( SY493
               != ( cartesian_product2 @ SV296 @ SY492 ) )
              | ~ ( ~ ! [SY494: $i] :
                        ( ! [SY495: $i,SY496: $i] :
                            ( ~ ( in @ SY495 @ SV296 )
                            | ~ ( in @ SY496 @ SY492 )
                            | ( SY494
                             != ( ordered_pair @ SY495 @ SY496 ) ) )
                        | ( in @ SY494 @ SY493 ) )
                  | ~ ! [SY497: $i] :
                        ( ~ ( in @ SY497 @ SY493 )
                        | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY497 @ SY493 @ SY492 @ SV296 ) @ SV296 )
                                  | ~ ( in @ ( sK13_SY186 @ SY497 @ SY493 @ SY492 @ SV296 ) @ SY492 ) )
                            | ( SY497
                             != ( ordered_pair @ ( sK12_E @ SY497 @ SY493 @ SY492 @ SV296 ) @ ( sK13_SY186 @ SY497 @ SY493 @ SY492 @ SV296 ) ) ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1402]) ).

thf(1475,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
            | ( SX0 = empty_set )
            | ( SX0
              = ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1403]) ).

thf(1476,plain,
    ( ( ~ ~ ( ~ ! [SX0: $i] :
                  ( ( SX0 != empty_set )
                  | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0
                   != ( singleton @ SX1 ) )
                  | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1403]) ).

thf(1477,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ( ( sK21_C @ SX1 @ SX0 )
                     != SX0 )
                    | ~ ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ( ( sK21_C @ SX1 @ SX0 )
                      = SX0 )
                    | ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) ) )
            | ( SX1
              = ( singleton @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1404]) ).

thf(1478,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( singleton @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ( SX2 != SX0 )
                      | ( in @ SX2 @ SX1 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ( SX2 = SX0 ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1404]) ).

thf(1479,plain,
    ! [SV297: $i] :
      ( ( ~ ! [SY498: $i,SY499: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SV297 )
                      | ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY498 )
                      | ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SV297 )
                            | ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) )
                        | ~ ( ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY498 )
                            | ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) ) ) )
              | ( SY499
                = ( set_intersection2 @ SV297 @ SY498 ) ) )
        | ~ ! [SY500: $i,SY501: $i] :
              ( ( SY501
               != ( set_intersection2 @ SV297 @ SY500 ) )
              | ~ ( ~ ! [SY502: $i] :
                        ( ~ ( in @ SY502 @ SV297 )
                        | ~ ( in @ SY502 @ SY500 )
                        | ( in @ SY502 @ SY501 ) )
                  | ~ ~ ( ~ ! [SY503: $i] :
                              ( ~ ( in @ SY503 @ SY501 )
                              | ( in @ SY503 @ SV297 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY501 )
                              | ( in @ SX3 @ SY500 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1405]) ).

thf(1480,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
                | ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) )
            | ~ ( ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
                | ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) ) )
        | ( SV298 = SV339 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1406]) ).

thf(1481,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ~ ( ~ ! [SY550: $i,SY551: $i] :
                  ( ~ ( in @ SV299 @ SY550 )
                  | ~ ( in @ SV340 @ SY551 )
                  | ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY550 @ SY551 ) ) )
            | ~ ~ ( ~ ! [SY552: $i] :
                        ( ! [SY553: $i] :
                            ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY552 @ SY553 ) )
                        | ( in @ SV299 @ SY552 ) )
                  | ~ ! [SY554: $i,SY555: $i] :
                        ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY554 @ SY555 ) )
                        | ( in @ SV340 @ SY555 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1407]) ).

thf(1482,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 = SX1 )
            | ~ ( subset @ SX0 @ SX1 )
            | ( proper_subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1408]) ).

thf(1483,plain,
    ( ( ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                  ( ~ ( proper_subset @ SX0 @ SX1 )
                  | ( SX0 != SX1 ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ~ ( proper_subset @ SX0 @ SX1 )
                  | ( subset @ SX0 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1408]) ).

thf(1484,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_intersection2 @ SX0 @ SX1 )
             != empty_set )
            | ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1409]) ).

thf(1485,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( disjoint @ SX0 @ SX1 )
            | ( ( set_intersection2 @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1409]) ).

thf(1486,plain,
    ! [SV300: $i] :
      ( ( ~ ! [SY513: $i,SY514: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                            | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                             != SV300 ) )
                        | ~ ( ~ ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                            | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                             != SY513 ) ) )
                  | ~ ( ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                      | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                        = SV300 )
                      | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                        = SY513 ) ) )
              | ( SY514
                = ( unordered_pair @ SV300 @ SY513 ) ) )
        | ~ ! [SY515: $i,SY516: $i] :
              ( ( SY516
               != ( unordered_pair @ SV300 @ SY515 ) )
              | ~ ( ~ ! [SY517: $i] :
                        ( ~ ( in @ SY517 @ SY516 )
                        | ( SY517 = SV300 )
                        | ( SY517 = SY515 ) )
                  | ~ ~ ( ~ ! [SY518: $i] :
                              ( ( SY518 != SV300 )
                              | ( in @ SY518 @ SY516 ) )
                        | ~ ! [SX3: $i] :
                              ( ( SX3 != SY515 )
                              | ( in @ SX3 @ SY516 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1410]) ).

thf(1487,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ( in @ ( sK22_C @ SX1 @ SX0 ) @ ( set_intersection2 @ SX0 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1411]) ).

thf(1488,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ! [SX2: $i] :
                ~ ( in @ SX2 @ ( set_intersection2 @ SX0 @ SX1 ) )
            | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1411]) ).

thf(1489,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                    | ~ ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) )
                | ~ ( ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                    | ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) ) )
            | ( SX1
              = ( powerset @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1412]) ).

thf(1490,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( powerset @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ( subset @ SX2 @ SX0 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( subset @ SX2 @ SX0 )
                      | ( in @ SX2 @ SX1 ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1412]) ).

thf(1491,plain,
    ! [SV341: $i,SV301: $i] :
      ( ( ~ ( ~ ! [SY556: $i] :
                  ( ! [SY557: $i] :
                      ( ( ordered_pair @ SV301 @ SV341 )
                     != ( ordered_pair @ SY556 @ SY557 ) )
                  | ( SV301 = SY556 ) )
            | ~ ! [SY558: $i,SY559: $i] :
                  ( ( ( ordered_pair @ SV301 @ SV341 )
                   != ( ordered_pair @ SY558 @ SY559 ) )
                  | ( SV341 = SY559 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1413]) ).

thf(1492,plain,
    ! [SV302: $i] :
      ( ( ~ ! [SY525: $i,SY526: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                            | ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SV302 ) )
                        | ~ ( ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                            | ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY525 ) ) )
                  | ~ ( ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                      | ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SV302 )
                      | ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY525 ) ) )
              | ( SY526
                = ( set_union2 @ SV302 @ SY525 ) ) )
        | ~ ! [SY527: $i,SY528: $i] :
              ( ( SY528
               != ( set_union2 @ SV302 @ SY527 ) )
              | ~ ( ~ ! [SY529: $i] :
                        ( ~ ( in @ SY529 @ SY528 )
                        | ( in @ SY529 @ SV302 )
                        | ( in @ SY529 @ SY527 ) )
                  | ~ ~ ( ~ ! [SY530: $i] :
                              ( ~ ( in @ SY530 @ SV302 )
                              | ( in @ SY530 @ SY528 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY527 )
                              | ( in @ SX3 @ SY528 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1414]) ).

thf(1493,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ! [SX2: $i] :
                        ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX2 )
                        | ~ ( in @ SX2 @ SX0 ) )
                    | ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ~ ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ ( sK9_SY185 @ SX1 @ SX0 ) )
                        | ~ ( in @ ( sK9_SY185 @ SX1 @ SX0 ) @ SX0 ) )
                    | ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) ) )
            | ( SX1
              = ( union @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1415]) ).

thf(1494,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1
             != ( union @ SX0 ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ! [SX3: $i] :
                          ( ~ ( in @ SX2 @ SX3 )
                          | ~ ( in @ SX3 @ SX0 ) )
                      | ( in @ SX2 @ SX1 ) )
                | ~ ! [SX2: $i] :
                      ( ~ ( in @ SX2 @ SX1 )
                      | ~ ( ~ ( in @ SX2 @ ( sK7_D @ SX2 @ SX1 @ SX0 ) )
                          | ~ ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1415]) ).

thf(1495,plain,
    ! [SV303: $i] :
      ( ( ~ ! [SY532: $i,SY533: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SV303 )
                      | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY532 )
                      | ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SV303 )
                            | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) )
                        | ~ ( ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY532 )
                            | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) ) ) )
              | ( SY533
                = ( set_difference @ SV303 @ SY532 ) ) )
        | ~ ! [SY534: $i,SY535: $i] :
              ( ( SY535
               != ( set_difference @ SV303 @ SY534 ) )
              | ~ ( ~ ! [SY536: $i] :
                        ( ~ ( in @ SY536 @ SV303 )
                        | ( in @ SY536 @ SY534 )
                        | ( in @ SY536 @ SY535 ) )
                  | ~ ~ ( ~ ! [SY537: $i] :
                              ( ~ ( in @ SY537 @ SY535 )
                              | ( in @ SY537 @ SV303 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY535 )
                              | ~ ( in @ SX3 @ SY534 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1416]) ).

thf(1496,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( in @ ( sK20_B @ SX0 ) @ SX0 )
            | ( SX0 = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1417]) ).

thf(1497,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] :
                ~ ( in @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1417]) ).

thf(1498,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( in @ SX0 @ SX1 )
            | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1418]) ).

thf(1499,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
            | ( in @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1418]) ).

thf(1500,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ~ ( ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1419]) ).

thf(1501,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ! [SX2: $i] :
                ( ~ ( in @ SX2 @ SX0 )
                | ~ ( in @ SX2 @ SX1 ) )
            | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1419]) ).

thf(1502,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ~ ( subset @ SX1 @ SX0 )
            | ( SX0 = SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1420]) ).

thf(1503,plain,
    ( ( ~ ~ ( ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0 != SX1 )
                  | ( subset @ SX0 @ SX1 ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX0 != SX1 )
                  | ( subset @ SX1 @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1420]) ).

thf(1504,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX1 ) )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1421]) ).

thf(1505,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ! [SX2: $i] :
                ( ~ ( in @ SX2 @ SX0 )
                | ( in @ SX2 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1421]) ).

thf(1506,plain,
    ! [SV304: $i,SV246: $i] :
      ( ( ( ~ ( in @ SV246 @ SV304 ) )
        = $true )
      | ( ( ( set_union2 @ ( singleton @ SV246 ) @ SV304 )
          = SV304 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1423]) ).

thf(1507,plain,
    ! [SV305: $i,SV247: $i] :
      ( ( ( ~ ( disjoint @ ( singleton @ SV247 ) @ SV305 ) )
        = $true )
      | ( ( ~ ( in @ SV247 @ SV305 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1424]) ).

thf(1508,plain,
    ! [SV306: $i,SV248: $i] :
      ( ( ( in @ SV248 @ SV306 )
        = $true )
      | ( ( disjoint @ ( singleton @ SV248 ) @ SV306 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1425]) ).

thf(1509,plain,
    ! [SV307: $i,SV249: $i] :
      ( ( ( ~ ( subset @ SV249 @ SV307 ) )
        = $true )
      | ( ( ! [SY539: $i] :
              ( ( in @ SY539 @ SV249 )
              | ( subset @ SV249 @ ( set_difference @ SV307 @ ( singleton @ SY539 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1426]) ).

thf(1510,plain,
    ! [SV308: $i,SV250: $i] :
      ( ( ( ~ ( in @ SV250 @ SV308 ) )
        = $true )
      | ( ( subset @ SV250 @ ( union @ SV308 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1427]) ).

thf(1511,plain,
    ! [SV309: $i,SV342: $i,SV251: $i] :
      ( ( ! [SY560: $i] :
            ( ( SV251 = SY560 )
            | ( SV251 = SV342 )
            | ( ( unordered_pair @ SV251 @ SV309 )
             != ( unordered_pair @ SV342 @ SY560 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1428]) ).

thf(1512,plain,
    ! [SV310: $i,SV252: $i] :
      ( ( ( ~ ( subset @ SV252 @ SV310 ) )
        = $true )
      | ( ( ( set_union2 @ SV252 @ SV310 )
          = SV310 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1429]) ).

thf(1513,plain,
    ! [SV343: $i,SV312: $i,SV254: $i] :
      ( ( ~ ( subset @ SV254 @ SV312 )
        | ~ ( subset @ SV254 @ SV343 )
        | ( subset @ SV254 @ ( set_intersection2 @ SV312 @ SV343 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1431]) ).

thf(1514,plain,
    ! [SV344: $i,SV313: $i,SV255: $i] :
      ( ( ~ ( subset @ SV255 @ SV313 )
        | ~ ( subset @ SV313 @ SV344 )
        | ( subset @ SV255 @ SV344 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1432]) ).

thf(1515,plain,
    ! [SV314: $i,SV256: $i] :
      ( ( ( ~ ( subset @ SV256 @ SV314 ) )
        = $true )
      | ( ( ! [SY544: $i] : ( subset @ ( set_intersection2 @ SV256 @ SY544 ) @ ( set_intersection2 @ SV314 @ SY544 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1433]) ).

thf(1516,plain,
    ! [SV315: $i,SV257: $i] :
      ( ( ( ~ ( subset @ SV257 @ SV315 ) )
        = $true )
      | ( ( ( set_intersection2 @ SV257 @ SV315 )
          = SV257 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1434]) ).

thf(1517,plain,
    ! [SV316: $i,SV259: $i] :
      ( ( ( ~ ( subset @ SV259 @ SV316 ) )
        = $true )
      | ( ( ! [SY545: $i] : ( subset @ ( set_difference @ SV259 @ SY545 ) @ ( set_difference @ SV316 @ SY545 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1435]) ).

thf(1518,plain,
    ! [SV262: $i] :
      ( ( ( subset @ SV262 @ empty_set )
        = $false )
      | ( ( SV262 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1438]) ).

thf(1519,plain,
    ! [SV320: $i,SV264: $i] :
      ( ( ( ~ ( subset @ SV264 @ SV320 ) )
        = $true )
      | ( ( SV320
          = ( set_union2 @ SV264 @ ( set_difference @ SV320 @ SV264 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1440]) ).

thf(1520,plain,
    ! [SV266: $i,SV322: $i] :
      ( ( ( ~ ( proper_subset @ SV322 @ SV266 ) )
        = $true )
      | ( ( ~ ( subset @ SV266 @ SV322 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1442]) ).

thf(1521,plain,
    ! [SV267: $i,SV345: $i,SV323: $i] :
      ( ( ~ ( disjoint @ SV323 @ SV345 )
        | ~ ( subset @ SV267 @ SV323 )
        | ( disjoint @ SV267 @ SV345 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1443]) ).

thf(1522,plain,
    ! [SV324: $i,SV269: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV269 ) @ ( singleton @ SV324 ) ) )
        = $true )
      | ( ( SV269 = SV324 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1444]) ).

thf(1523,plain,
    ! [SV346: $i,SV326: $i,SV271: $i] :
      ( ( ~ ( subset @ SV271 @ SV326 )
        | ~ ( subset @ SV346 @ SV326 )
        | ( subset @ ( set_union2 @ SV271 @ SV346 ) @ SV326 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1446]) ).

thf(1524,plain,
    ! [SV327: $i,SV272: $i] :
      ( ( ( ! [SY548: $i] :
              ( ( singleton @ SV272 )
             != ( unordered_pair @ SV327 @ SY548 ) ) )
        = $true )
      | ( ( SV272 = SV327 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1447]) ).

thf(1525,plain,
    ! [SV347: $i,SV328: $i,SV273: $i] :
      ( ( ( ( singleton @ SV273 )
         != ( unordered_pair @ SV328 @ SV347 ) )
        | ( SV328 = SV347 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1448]) ).

thf(1526,plain,
    ! [SV329: $i,SV274: $i] :
      ( ( ( ~ ( in @ SV274 @ SV329 ) )
        = $true )
      | ( ( ~ ( in @ SV329 @ SV274 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1449]) ).

thf(1527,plain,
    ! [SV330: $i,SV275: $i] :
      ( ( ( ~ ( proper_subset @ SV275 @ SV330 ) )
        = $true )
      | ( ( ~ ( proper_subset @ SV330 @ SV275 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1450]) ).

thf(1528,plain,
    ! [SV335: $i,SV280: $i] :
      ( ( empty @ ( ordered_pair @ SV280 @ SV335 ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1455]) ).

thf(1529,plain,
    ! [SV348: $i,SV281: $i] :
      ( ( ( ~ ( empty @ ( set_union2 @ SV281 @ SV348 ) ) )
        = $true )
      | ( ( empty @ SV281 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1456]) ).

thf(1530,plain,
    ! [SV282: $i,SV349: $i] :
      ( ( ( ~ ( empty @ ( set_union2 @ SV349 @ SV282 ) ) )
        = $true )
      | ( ( empty @ SV282 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1457]) ).

thf(1531,plain,
    ! [SV336: $i,SV287: $i] :
      ( ( ( ~ ( disjoint @ SV287 @ SV336 ) )
        = $true )
      | ( ( disjoint @ SV336 @ SV287 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1459]) ).

thf(1532,plain,
    ! [SV292: $i] :
      ( ( ( empty @ SV292 )
        = $false )
      | ( ( SV292 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1460]) ).

thf(1533,plain,
    ! [SV293: $i,SV337: $i] :
      ( ( ( ~ ( empty @ SV337 ) )
        = $true )
      | ( ( ~ ( in @ SV293 @ SV337 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1461]) ).

thf(1534,plain,
    ! [SV338: $i,SV294: $i] :
      ( ( ( ( SV294 = SV338 )
          | ~ ( empty @ SV294 ) )
        = $true )
      | ( ( ~ ( empty @ SV338 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1462]) ).

thf(1535,plain,
    ! [SV295: $i] :
      ( ( ~ ! [SY482: $i,SY483: $i] :
              ( ~ ( in @ SV295 @ SY483 )
              | ~ ( in @ SY482 @ SY483 )
              | ( subset @ ( unordered_pair @ SV295 @ SY482 ) @ SY483 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1463]) ).

thf(1536,plain,
    ! [SV295: $i] :
      ( ( ~ ~ ( ~ ! [SY484: $i,SY485: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV295 @ SY484 ) @ SY485 )
                    | ( in @ SV295 @ SY485 ) )
              | ~ ! [SY486: $i,SY487: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV295 @ SY486 ) @ SY487 )
                    | ( in @ SY486 @ SY487 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1463]) ).

thf(1537,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_difference @ SX0 @ SX1 )
           != empty_set )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1464]) ).

thf(1538,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ( ( set_difference @ SX0 @ SX1 )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1465]) ).

thf(1539,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_difference @ SX0 @ SX1 )
           != SX0 )
          | ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1466]) ).

thf(1540,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( disjoint @ SX0 @ SX1 )
          | ( ( set_difference @ SX0 @ SX1 )
            = SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1467]) ).

thf(1541,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( in @ SX0 @ SX1 )
          | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1468]) ).

thf(1542,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
          | ( in @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1469]) ).

thf(1543,plain,
    ( ( ( sK1_A = empty_set )
      | ( sK1_A
        = ( singleton @ sK2_SY183 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1470]) ).

thf(1544,plain,
    ( ( ~ ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1471]) ).

thf(1545,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_difference @ SX0 @ SX1 )
           != empty_set )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1472]) ).

thf(1546,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ( ( set_difference @ SX0 @ SX1 )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1473]) ).

thf(1547,plain,
    ! [SV296: $i] :
      ( ( ~ ! [SY488: $i,SY489: $i] :
              ( ~ ( ~ ( ! [SY490: $i,SY491: $i] :
                          ( ~ ( in @ SY490 @ SV296 )
                          | ~ ( in @ SY491 @ SY488 )
                          | ( ( sK14_D @ SY489 @ SY488 @ SV296 )
                           != ( ordered_pair @ SY490 @ SY491 ) ) )
                      | ~ ( in @ ( sK14_D @ SY489 @ SY488 @ SV296 ) @ SY489 ) )
                  | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SY489 @ SY488 @ SV296 ) @ SV296 )
                                | ~ ( in @ ( sK16_SY191 @ SY489 @ SY488 @ SV296 ) @ SY488 ) )
                          | ( ( sK14_D @ SY489 @ SY488 @ SV296 )
                           != ( ordered_pair @ ( sK15_SY189 @ SY489 @ SY488 @ SV296 ) @ ( sK16_SY191 @ SY489 @ SY488 @ SV296 ) ) ) )
                      | ( in @ ( sK14_D @ SY489 @ SY488 @ SV296 ) @ SY489 ) ) )
              | ( SY489
                = ( cartesian_product2 @ SV296 @ SY488 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1474]) ).

thf(1548,plain,
    ! [SV296: $i] :
      ( ( ~ ! [SY492: $i,SY493: $i] :
              ( ( SY493
               != ( cartesian_product2 @ SV296 @ SY492 ) )
              | ~ ( ~ ! [SY494: $i] :
                        ( ! [SY495: $i,SY496: $i] :
                            ( ~ ( in @ SY495 @ SV296 )
                            | ~ ( in @ SY496 @ SY492 )
                            | ( SY494
                             != ( ordered_pair @ SY495 @ SY496 ) ) )
                        | ( in @ SY494 @ SY493 ) )
                  | ~ ! [SY497: $i] :
                        ( ~ ( in @ SY497 @ SY493 )
                        | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY497 @ SY493 @ SY492 @ SV296 ) @ SV296 )
                                  | ~ ( in @ ( sK13_SY186 @ SY497 @ SY493 @ SY492 @ SV296 ) @ SY492 ) )
                            | ( SY497
                             != ( ordered_pair @ ( sK12_E @ SY497 @ SY493 @ SY492 @ SV296 ) @ ( sK13_SY186 @ SY497 @ SY493 @ SY492 @ SV296 ) ) ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1474]) ).

thf(1549,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
          | ( SX0 = empty_set )
          | ( SX0
            = ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1475]) ).

thf(1550,plain,
    ( ( ~ ( ~ ! [SX0: $i] :
                ( ( SX0 != empty_set )
                | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX0
                 != ( singleton @ SX1 ) )
                | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1476]) ).

thf(1551,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ( ( sK21_C @ SX1 @ SX0 )
                   != SX0 )
                  | ~ ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) )
              | ~ ( ( ( sK21_C @ SX1 @ SX0 )
                    = SX0 )
                  | ( in @ ( sK21_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ( SX1
            = ( singleton @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1477]) ).

thf(1552,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX1
           != ( singleton @ SX0 ) )
          | ~ ( ~ ! [SX2: $i] :
                    ( ( SX2 != SX0 )
                    | ( in @ SX2 @ SX1 ) )
              | ~ ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX1 )
                    | ( SX2 = SX0 ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1478]) ).

thf(1553,plain,
    ! [SV297: $i] :
      ( ( ~ ! [SY498: $i,SY499: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SV297 )
                      | ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY498 )
                      | ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SV297 )
                            | ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) )
                        | ~ ( ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY498 )
                            | ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) ) ) )
              | ( SY499
                = ( set_intersection2 @ SV297 @ SY498 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1479]) ).

thf(1554,plain,
    ! [SV297: $i] :
      ( ( ~ ! [SY500: $i,SY501: $i] :
              ( ( SY501
               != ( set_intersection2 @ SV297 @ SY500 ) )
              | ~ ( ~ ! [SY502: $i] :
                        ( ~ ( in @ SY502 @ SV297 )
                        | ~ ( in @ SY502 @ SY500 )
                        | ( in @ SY502 @ SY501 ) )
                  | ~ ~ ( ~ ! [SY503: $i] :
                              ( ~ ( in @ SY503 @ SY501 )
                              | ( in @ SY503 @ SV297 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY501 )
                              | ( in @ SX3 @ SY500 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1479]) ).

thf(1555,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
                  | ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) )
              | ~ ( ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
                  | ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) ) ) )
        = $true )
      | ( ( SV298 = SV339 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1480]) ).

thf(1556,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ~ ! [SY550: $i,SY551: $i] :
              ( ~ ( in @ SV299 @ SY550 )
              | ~ ( in @ SV340 @ SY551 )
              | ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY550 @ SY551 ) ) )
        | ~ ~ ( ~ ! [SY552: $i] :
                    ( ! [SY553: $i] :
                        ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY552 @ SY553 ) )
                    | ( in @ SV299 @ SY552 ) )
              | ~ ! [SY554: $i,SY555: $i] :
                    ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY554 @ SY555 ) )
                    | ( in @ SV340 @ SY555 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1481]) ).

thf(1557,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0 = SX1 )
          | ~ ( subset @ SX0 @ SX1 )
          | ( proper_subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1482]) ).

thf(1558,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( proper_subset @ SX0 @ SX1 )
                | ( SX0 != SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( proper_subset @ SX0 @ SX1 )
                | ( subset @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1483]) ).

thf(1559,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_intersection2 @ SX0 @ SX1 )
           != empty_set )
          | ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1484]) ).

thf(1560,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( disjoint @ SX0 @ SX1 )
          | ( ( set_intersection2 @ SX0 @ SX1 )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1485]) ).

thf(1561,plain,
    ! [SV300: $i] :
      ( ( ~ ! [SY513: $i,SY514: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                            | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                             != SV300 ) )
                        | ~ ( ~ ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                            | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                             != SY513 ) ) )
                  | ~ ( ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                      | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                        = SV300 )
                      | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                        = SY513 ) ) )
              | ( SY514
                = ( unordered_pair @ SV300 @ SY513 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1486]) ).

thf(1562,plain,
    ! [SV300: $i] :
      ( ( ~ ! [SY515: $i,SY516: $i] :
              ( ( SY516
               != ( unordered_pair @ SV300 @ SY515 ) )
              | ~ ( ~ ! [SY517: $i] :
                        ( ~ ( in @ SY517 @ SY516 )
                        | ( SY517 = SV300 )
                        | ( SY517 = SY515 ) )
                  | ~ ~ ( ~ ! [SY518: $i] :
                              ( ( SY518 != SV300 )
                              | ( in @ SY518 @ SY516 ) )
                        | ~ ! [SX3: $i] :
                              ( ( SX3 != SY515 )
                              | ( in @ SX3 @ SY516 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1486]) ).

thf(1563,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( disjoint @ SX0 @ SX1 )
          | ( in @ ( sK22_C @ SX1 @ SX0 ) @ ( set_intersection2 @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1487]) ).

thf(1564,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ! [SX2: $i] :
              ~ ( in @ SX2 @ ( set_intersection2 @ SX0 @ SX1 ) )
          | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1488]) ).

thf(1565,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                  | ~ ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) )
              | ~ ( ( in @ ( sK19_C @ SX1 @ SX0 ) @ SX1 )
                  | ( subset @ ( sK19_C @ SX1 @ SX0 ) @ SX0 ) ) )
          | ( SX1
            = ( powerset @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1489]) ).

thf(1566,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX1
           != ( powerset @ SX0 ) )
          | ~ ( ~ ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX1 )
                    | ( subset @ SX2 @ SX0 ) )
              | ~ ! [SX2: $i] :
                    ( ~ ( subset @ SX2 @ SX0 )
                    | ( in @ SX2 @ SX1 ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1490]) ).

thf(1567,plain,
    ! [SV341: $i,SV301: $i] :
      ( ( ~ ! [SY556: $i] :
              ( ! [SY557: $i] :
                  ( ( ordered_pair @ SV301 @ SV341 )
                 != ( ordered_pair @ SY556 @ SY557 ) )
              | ( SV301 = SY556 ) )
        | ~ ! [SY558: $i,SY559: $i] :
              ( ( ( ordered_pair @ SV301 @ SV341 )
               != ( ordered_pair @ SY558 @ SY559 ) )
              | ( SV341 = SY559 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1491]) ).

thf(1568,plain,
    ! [SV302: $i] :
      ( ( ~ ! [SY525: $i,SY526: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                            | ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SV302 ) )
                        | ~ ( ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                            | ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY525 ) ) )
                  | ~ ( ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                      | ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SV302 )
                      | ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY525 ) ) )
              | ( SY526
                = ( set_union2 @ SV302 @ SY525 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1492]) ).

thf(1569,plain,
    ! [SV302: $i] :
      ( ( ~ ! [SY527: $i,SY528: $i] :
              ( ( SY528
               != ( set_union2 @ SV302 @ SY527 ) )
              | ~ ( ~ ! [SY529: $i] :
                        ( ~ ( in @ SY529 @ SY528 )
                        | ( in @ SY529 @ SV302 )
                        | ( in @ SY529 @ SY527 ) )
                  | ~ ~ ( ~ ! [SY530: $i] :
                              ( ~ ( in @ SY530 @ SV302 )
                              | ( in @ SY530 @ SY528 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY527 )
                              | ( in @ SX3 @ SY528 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1492]) ).

thf(1570,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ! [SX2: $i] :
                      ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX2 )
                      | ~ ( in @ SX2 @ SX0 ) )
                  | ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) )
              | ~ ( ~ ( ~ ( in @ ( sK8_C @ SX1 @ SX0 ) @ ( sK9_SY185 @ SX1 @ SX0 ) )
                      | ~ ( in @ ( sK9_SY185 @ SX1 @ SX0 ) @ SX0 ) )
                  | ( in @ ( sK8_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ( SX1
            = ( union @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1493]) ).

thf(1571,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX1
           != ( union @ SX0 ) )
          | ~ ( ~ ! [SX2: $i] :
                    ( ! [SX3: $i] :
                        ( ~ ( in @ SX2 @ SX3 )
                        | ~ ( in @ SX3 @ SX0 ) )
                    | ( in @ SX2 @ SX1 ) )
              | ~ ! [SX2: $i] :
                    ( ~ ( in @ SX2 @ SX1 )
                    | ~ ( ~ ( in @ SX2 @ ( sK7_D @ SX2 @ SX1 @ SX0 ) )
                        | ~ ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1494]) ).

thf(1572,plain,
    ! [SV303: $i] :
      ( ( ~ ! [SY532: $i,SY533: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SV303 )
                      | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY532 )
                      | ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SV303 )
                            | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) )
                        | ~ ( ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY532 )
                            | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) ) ) )
              | ( SY533
                = ( set_difference @ SV303 @ SY532 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1495]) ).

thf(1573,plain,
    ! [SV303: $i] :
      ( ( ~ ! [SY534: $i,SY535: $i] :
              ( ( SY535
               != ( set_difference @ SV303 @ SY534 ) )
              | ~ ( ~ ! [SY536: $i] :
                        ( ~ ( in @ SY536 @ SV303 )
                        | ( in @ SY536 @ SY534 )
                        | ( in @ SY536 @ SY535 ) )
                  | ~ ~ ( ~ ! [SY537: $i] :
                              ( ~ ( in @ SY537 @ SY535 )
                              | ( in @ SY537 @ SV303 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY535 )
                              | ~ ( in @ SX3 @ SY534 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1495]) ).

thf(1574,plain,
    ( ( ! [SX0: $i] :
          ( ( in @ ( sK20_B @ SX0 ) @ SX0 )
          | ( SX0 = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1496]) ).

thf(1575,plain,
    ( ( ! [SX0: $i] :
          ( ( SX0 != empty_set )
          | ! [SX1: $i] :
              ~ ( in @ SX1 @ SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1497]) ).

thf(1576,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( in @ SX0 @ SX1 )
          | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1498]) ).

thf(1577,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
          | ( in @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1499]) ).

thf(1578,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( disjoint @ SX0 @ SX1 )
          | ~ ( ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX0 )
              | ~ ( in @ ( sK23_C @ SX1 @ SX0 ) @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1500]) ).

thf(1579,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ! [SX2: $i] :
              ( ~ ( in @ SX2 @ SX0 )
              | ~ ( in @ SX2 @ SX1 ) )
          | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1501]) ).

thf(1580,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ~ ( subset @ SX1 @ SX0 )
          | ( SX0 = SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1502]) ).

thf(1581,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( SX0 != SX1 )
                | ( subset @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX0 != SX1 )
                | ( subset @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1503]) ).

thf(1582,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX0 )
              | ~ ~ ( in @ ( sK11_C @ SX1 @ SX0 ) @ SX1 ) )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1504]) ).

thf(1583,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ! [SX2: $i] :
              ( ~ ( in @ SX2 @ SX0 )
              | ( in @ SX2 @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1505]) ).

thf(1584,plain,
    ! [SV304: $i,SV246: $i] :
      ( ( ( in @ SV246 @ SV304 )
        = $false )
      | ( ( ( set_union2 @ ( singleton @ SV246 ) @ SV304 )
          = SV304 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1506]) ).

thf(1585,plain,
    ! [SV305: $i,SV247: $i] :
      ( ( ( disjoint @ ( singleton @ SV247 ) @ SV305 )
        = $false )
      | ( ( ~ ( in @ SV247 @ SV305 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1507]) ).

thf(1586,plain,
    ! [SV307: $i,SV249: $i] :
      ( ( ( subset @ SV249 @ SV307 )
        = $false )
      | ( ( ! [SY539: $i] :
              ( ( in @ SY539 @ SV249 )
              | ( subset @ SV249 @ ( set_difference @ SV307 @ ( singleton @ SY539 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1509]) ).

thf(1587,plain,
    ! [SV308: $i,SV250: $i] :
      ( ( ( in @ SV250 @ SV308 )
        = $false )
      | ( ( subset @ SV250 @ ( union @ SV308 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1510]) ).

thf(1588,plain,
    ! [SV309: $i,SV342: $i,SV350: $i,SV251: $i] :
      ( ( ( SV251 = SV350 )
        | ( SV251 = SV342 )
        | ( ( unordered_pair @ SV251 @ SV309 )
         != ( unordered_pair @ SV342 @ SV350 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1511]) ).

thf(1589,plain,
    ! [SV310: $i,SV252: $i] :
      ( ( ( subset @ SV252 @ SV310 )
        = $false )
      | ( ( ( set_union2 @ SV252 @ SV310 )
          = SV310 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1512]) ).

thf(1590,plain,
    ! [SV343: $i,SV312: $i,SV254: $i] :
      ( ( ( ~ ( subset @ SV254 @ SV312 )
          | ~ ( subset @ SV254 @ SV343 ) )
        = $true )
      | ( ( subset @ SV254 @ ( set_intersection2 @ SV312 @ SV343 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1513]) ).

thf(1591,plain,
    ! [SV344: $i,SV313: $i,SV255: $i] :
      ( ( ( ~ ( subset @ SV255 @ SV313 )
          | ~ ( subset @ SV313 @ SV344 ) )
        = $true )
      | ( ( subset @ SV255 @ SV344 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1514]) ).

thf(1592,plain,
    ! [SV314: $i,SV256: $i] :
      ( ( ( subset @ SV256 @ SV314 )
        = $false )
      | ( ( ! [SY544: $i] : ( subset @ ( set_intersection2 @ SV256 @ SY544 ) @ ( set_intersection2 @ SV314 @ SY544 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1515]) ).

thf(1593,plain,
    ! [SV315: $i,SV257: $i] :
      ( ( ( subset @ SV257 @ SV315 )
        = $false )
      | ( ( ( set_intersection2 @ SV257 @ SV315 )
          = SV257 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1516]) ).

thf(1594,plain,
    ! [SV316: $i,SV259: $i] :
      ( ( ( subset @ SV259 @ SV316 )
        = $false )
      | ( ( ! [SY545: $i] : ( subset @ ( set_difference @ SV259 @ SY545 ) @ ( set_difference @ SV316 @ SY545 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1517]) ).

thf(1595,plain,
    ! [SV320: $i,SV264: $i] :
      ( ( ( subset @ SV264 @ SV320 )
        = $false )
      | ( ( SV320
          = ( set_union2 @ SV264 @ ( set_difference @ SV320 @ SV264 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1519]) ).

thf(1596,plain,
    ! [SV266: $i,SV322: $i] :
      ( ( ( proper_subset @ SV322 @ SV266 )
        = $false )
      | ( ( ~ ( subset @ SV266 @ SV322 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1520]) ).

thf(1597,plain,
    ! [SV267: $i,SV345: $i,SV323: $i] :
      ( ( ( ~ ( disjoint @ SV323 @ SV345 )
          | ~ ( subset @ SV267 @ SV323 ) )
        = $true )
      | ( ( disjoint @ SV267 @ SV345 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1521]) ).

thf(1598,plain,
    ! [SV324: $i,SV269: $i] :
      ( ( ( subset @ ( singleton @ SV269 ) @ ( singleton @ SV324 ) )
        = $false )
      | ( ( SV269 = SV324 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1522]) ).

thf(1599,plain,
    ! [SV346: $i,SV326: $i,SV271: $i] :
      ( ( ( ~ ( subset @ SV271 @ SV326 )
          | ~ ( subset @ SV346 @ SV326 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV271 @ SV346 ) @ SV326 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1523]) ).

thf(1600,plain,
    ! [SV351: $i,SV327: $i,SV272: $i] :
      ( ( ( ( ( singleton @ SV272 )
           != ( unordered_pair @ SV327 @ SV351 ) ) )
        = $true )
      | ( ( SV272 = SV327 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1524]) ).

thf(1601,plain,
    ! [SV347: $i,SV328: $i,SV273: $i] :
      ( ( ( ( ( singleton @ SV273 )
           != ( unordered_pair @ SV328 @ SV347 ) ) )
        = $true )
      | ( ( SV328 = SV347 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1525]) ).

thf(1602,plain,
    ! [SV329: $i,SV274: $i] :
      ( ( ( in @ SV274 @ SV329 )
        = $false )
      | ( ( ~ ( in @ SV329 @ SV274 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1526]) ).

thf(1603,plain,
    ! [SV330: $i,SV275: $i] :
      ( ( ( proper_subset @ SV275 @ SV330 )
        = $false )
      | ( ( ~ ( proper_subset @ SV330 @ SV275 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1527]) ).

thf(1604,plain,
    ! [SV348: $i,SV281: $i] :
      ( ( ( empty @ ( set_union2 @ SV281 @ SV348 ) )
        = $false )
      | ( ( empty @ SV281 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1529]) ).

thf(1605,plain,
    ! [SV282: $i,SV349: $i] :
      ( ( ( empty @ ( set_union2 @ SV349 @ SV282 ) )
        = $false )
      | ( ( empty @ SV282 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1530]) ).

thf(1606,plain,
    ! [SV336: $i,SV287: $i] :
      ( ( ( disjoint @ SV287 @ SV336 )
        = $false )
      | ( ( disjoint @ SV336 @ SV287 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1531]) ).

thf(1607,plain,
    ! [SV293: $i,SV337: $i] :
      ( ( ( empty @ SV337 )
        = $false )
      | ( ( ~ ( in @ SV293 @ SV337 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1533]) ).

thf(1608,plain,
    ! [SV338: $i,SV294: $i] :
      ( ( ( SV294 = SV338 )
        = $true )
      | ( ( ~ ( empty @ SV294 ) )
        = $true )
      | ( ( ~ ( empty @ SV338 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1534]) ).

thf(1609,plain,
    ! [SV295: $i] :
      ( ( ! [SY482: $i,SY483: $i] :
            ( ~ ( in @ SV295 @ SY483 )
            | ~ ( in @ SY482 @ SY483 )
            | ( subset @ ( unordered_pair @ SV295 @ SY482 ) @ SY483 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1535]) ).

thf(1610,plain,
    ! [SV295: $i] :
      ( ( ~ ( ~ ! [SY484: $i,SY485: $i] :
                  ( ~ ( subset @ ( unordered_pair @ SV295 @ SY484 ) @ SY485 )
                  | ( in @ SV295 @ SY485 ) )
            | ~ ! [SY486: $i,SY487: $i] :
                  ( ~ ( subset @ ( unordered_pair @ SV295 @ SY486 ) @ SY487 )
                  | ( in @ SY486 @ SY487 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1536]) ).

thf(1611,plain,
    ! [SV352: $i] :
      ( ( ! [SY561: $i] :
            ( ( ( set_difference @ SV352 @ SY561 )
             != empty_set )
            | ( subset @ SV352 @ SY561 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1537]) ).

thf(1612,plain,
    ! [SV353: $i] :
      ( ( ! [SY562: $i] :
            ( ~ ( subset @ SV353 @ SY562 )
            | ( ( set_difference @ SV353 @ SY562 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1538]) ).

thf(1613,plain,
    ! [SV354: $i] :
      ( ( ! [SY563: $i] :
            ( ( ( set_difference @ SV354 @ SY563 )
             != SV354 )
            | ( disjoint @ SV354 @ SY563 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1539]) ).

thf(1614,plain,
    ! [SV355: $i] :
      ( ( ! [SY564: $i] :
            ( ~ ( disjoint @ SV355 @ SY564 )
            | ( ( set_difference @ SV355 @ SY564 )
              = SV355 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1540]) ).

thf(1615,plain,
    ! [SV356: $i] :
      ( ( ! [SY565: $i] :
            ( ~ ( in @ SV356 @ SY565 )
            | ( subset @ ( singleton @ SV356 ) @ SY565 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1541]) ).

thf(1616,plain,
    ! [SV357: $i] :
      ( ( ! [SY566: $i] :
            ( ~ ( subset @ ( singleton @ SV357 ) @ SY566 )
            | ( in @ SV357 @ SY566 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1542]) ).

thf(1617,plain,
    ( ( ( sK1_A = empty_set )
      = $true )
    | ( ( sK1_A
        = ( singleton @ sK2_SY183 ) )
      = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1543]) ).

thf(1618,plain,
    ( ( subset @ sK1_A @ ( singleton @ sK2_SY183 ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1544]) ).

thf(1619,plain,
    ! [SV358: $i] :
      ( ( ! [SY567: $i] :
            ( ( ( set_difference @ SV358 @ SY567 )
             != empty_set )
            | ( subset @ SV358 @ SY567 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1545]) ).

thf(1620,plain,
    ! [SV359: $i] :
      ( ( ! [SY568: $i] :
            ( ~ ( subset @ SV359 @ SY568 )
            | ( ( set_difference @ SV359 @ SY568 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1546]) ).

thf(1621,plain,
    ! [SV296: $i] :
      ( ( ! [SY488: $i,SY489: $i] :
            ( ~ ( ~ ( ! [SY490: $i,SY491: $i] :
                        ( ~ ( in @ SY490 @ SV296 )
                        | ~ ( in @ SY491 @ SY488 )
                        | ( ( sK14_D @ SY489 @ SY488 @ SV296 )
                         != ( ordered_pair @ SY490 @ SY491 ) ) )
                    | ~ ( in @ ( sK14_D @ SY489 @ SY488 @ SV296 ) @ SY489 ) )
                | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SY489 @ SY488 @ SV296 ) @ SV296 )
                              | ~ ( in @ ( sK16_SY191 @ SY489 @ SY488 @ SV296 ) @ SY488 ) )
                        | ( ( sK14_D @ SY489 @ SY488 @ SV296 )
                         != ( ordered_pair @ ( sK15_SY189 @ SY489 @ SY488 @ SV296 ) @ ( sK16_SY191 @ SY489 @ SY488 @ SV296 ) ) ) )
                    | ( in @ ( sK14_D @ SY489 @ SY488 @ SV296 ) @ SY489 ) ) )
            | ( SY489
              = ( cartesian_product2 @ SV296 @ SY488 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1547]) ).

thf(1622,plain,
    ! [SV296: $i] :
      ( ( ! [SY492: $i,SY493: $i] :
            ( ( SY493
             != ( cartesian_product2 @ SV296 @ SY492 ) )
            | ~ ( ~ ! [SY494: $i] :
                      ( ! [SY495: $i,SY496: $i] :
                          ( ~ ( in @ SY495 @ SV296 )
                          | ~ ( in @ SY496 @ SY492 )
                          | ( SY494
                           != ( ordered_pair @ SY495 @ SY496 ) ) )
                      | ( in @ SY494 @ SY493 ) )
                | ~ ! [SY497: $i] :
                      ( ~ ( in @ SY497 @ SY493 )
                      | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY497 @ SY493 @ SY492 @ SV296 ) @ SV296 )
                                | ~ ( in @ ( sK13_SY186 @ SY497 @ SY493 @ SY492 @ SV296 ) @ SY492 ) )
                          | ( SY497
                           != ( ordered_pair @ ( sK12_E @ SY497 @ SY493 @ SY492 @ SV296 ) @ ( sK13_SY186 @ SY497 @ SY493 @ SY492 @ SV296 ) ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1548]) ).

thf(1623,plain,
    ! [SV360: $i] :
      ( ( ! [SY569: $i] :
            ( ~ ( subset @ SV360 @ ( singleton @ SY569 ) )
            | ( SV360 = empty_set )
            | ( SV360
              = ( singleton @ SY569 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1549]) ).

thf(1624,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0
             != ( singleton @ SX1 ) )
            | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1550]) ).

thf(1625,plain,
    ! [SV361: $i] :
      ( ( ! [SY570: $i] :
            ( ~ ( ~ ( ( ( sK21_C @ SY570 @ SV361 )
                     != SV361 )
                    | ~ ( in @ ( sK21_C @ SY570 @ SV361 ) @ SY570 ) )
                | ~ ( ( ( sK21_C @ SY570 @ SV361 )
                      = SV361 )
                    | ( in @ ( sK21_C @ SY570 @ SV361 ) @ SY570 ) ) )
            | ( SY570
              = ( singleton @ SV361 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1551]) ).

thf(1626,plain,
    ! [SV362: $i] :
      ( ( ! [SY571: $i] :
            ( ( SY571
             != ( singleton @ SV362 ) )
            | ~ ( ~ ! [SY572: $i] :
                      ( ( SY572 != SV362 )
                      | ( in @ SY572 @ SY571 ) )
                | ~ ! [SY573: $i] :
                      ( ~ ( in @ SY573 @ SY571 )
                      | ( SY573 = SV362 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1552]) ).

thf(1627,plain,
    ! [SV297: $i] :
      ( ( ! [SY498: $i,SY499: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SV297 )
                    | ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY498 )
                    | ~ ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) )
                | ~ ~ ( ~ ( ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SV297 )
                          | ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) )
                      | ~ ( ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY498 )
                          | ( in @ ( sK10_D @ SY499 @ SY498 @ SV297 ) @ SY499 ) ) ) )
            | ( SY499
              = ( set_intersection2 @ SV297 @ SY498 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1553]) ).

thf(1628,plain,
    ! [SV297: $i] :
      ( ( ! [SY500: $i,SY501: $i] :
            ( ( SY501
             != ( set_intersection2 @ SV297 @ SY500 ) )
            | ~ ( ~ ! [SY502: $i] :
                      ( ~ ( in @ SY502 @ SV297 )
                      | ~ ( in @ SY502 @ SY500 )
                      | ( in @ SY502 @ SY501 ) )
                | ~ ~ ( ~ ! [SY503: $i] :
                            ( ~ ( in @ SY503 @ SY501 )
                            | ( in @ SY503 @ SV297 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SY501 )
                            | ( in @ SX3 @ SY500 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1554]) ).

thf(1629,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
              | ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) )
          | ~ ( ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
              | ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) ) )
        = $false )
      | ( ( SV298 = SV339 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1555]) ).

thf(1630,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ~ ! [SY550: $i,SY551: $i] :
              ( ~ ( in @ SV299 @ SY550 )
              | ~ ( in @ SV340 @ SY551 )
              | ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY550 @ SY551 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1556]) ).

thf(1631,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ~ ~ ( ~ ! [SY552: $i] :
                    ( ! [SY553: $i] :
                        ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY552 @ SY553 ) )
                    | ( in @ SV299 @ SY552 ) )
              | ~ ! [SY554: $i,SY555: $i] :
                    ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY554 @ SY555 ) )
                    | ( in @ SV340 @ SY555 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1556]) ).

thf(1632,plain,
    ! [SV363: $i] :
      ( ( ! [SY574: $i] :
            ( ( SV363 = SY574 )
            | ~ ( subset @ SV363 @ SY574 )
            | ( proper_subset @ SV363 @ SY574 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1557]) ).

thf(1633,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( proper_subset @ SX0 @ SX1 )
            | ( SX0 != SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( proper_subset @ SX0 @ SX1 )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1558]) ).

thf(1634,plain,
    ! [SV364: $i] :
      ( ( ! [SY575: $i] :
            ( ( ( set_intersection2 @ SV364 @ SY575 )
             != empty_set )
            | ( disjoint @ SV364 @ SY575 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1559]) ).

thf(1635,plain,
    ! [SV365: $i] :
      ( ( ! [SY576: $i] :
            ( ~ ( disjoint @ SV365 @ SY576 )
            | ( ( set_intersection2 @ SV365 @ SY576 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1560]) ).

thf(1636,plain,
    ! [SV300: $i] :
      ( ( ! [SY513: $i,SY514: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                          | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                           != SV300 ) )
                      | ~ ( ~ ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                          | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                           != SY513 ) ) )
                | ~ ( ( in @ ( sK18_D @ SY514 @ SY513 @ SV300 ) @ SY514 )
                    | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                      = SV300 )
                    | ( ( sK18_D @ SY514 @ SY513 @ SV300 )
                      = SY513 ) ) )
            | ( SY514
              = ( unordered_pair @ SV300 @ SY513 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1561]) ).

thf(1637,plain,
    ! [SV300: $i] :
      ( ( ! [SY515: $i,SY516: $i] :
            ( ( SY516
             != ( unordered_pair @ SV300 @ SY515 ) )
            | ~ ( ~ ! [SY517: $i] :
                      ( ~ ( in @ SY517 @ SY516 )
                      | ( SY517 = SV300 )
                      | ( SY517 = SY515 ) )
                | ~ ~ ( ~ ! [SY518: $i] :
                            ( ( SY518 != SV300 )
                            | ( in @ SY518 @ SY516 ) )
                      | ~ ! [SX3: $i] :
                            ( ( SX3 != SY515 )
                            | ( in @ SX3 @ SY516 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1562]) ).

thf(1638,plain,
    ! [SV366: $i] :
      ( ( ! [SY577: $i] :
            ( ( disjoint @ SV366 @ SY577 )
            | ( in @ ( sK22_C @ SY577 @ SV366 ) @ ( set_intersection2 @ SV366 @ SY577 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1563]) ).

thf(1639,plain,
    ! [SV367: $i] :
      ( ( ! [SY578: $i] :
            ( ! [SY579: $i] :
                ~ ( in @ SY579 @ ( set_intersection2 @ SV367 @ SY578 ) )
            | ~ ( disjoint @ SV367 @ SY578 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1564]) ).

thf(1640,plain,
    ! [SV368: $i] :
      ( ( ! [SY580: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SY580 @ SV368 ) @ SY580 )
                    | ~ ( subset @ ( sK19_C @ SY580 @ SV368 ) @ SV368 ) )
                | ~ ( ( in @ ( sK19_C @ SY580 @ SV368 ) @ SY580 )
                    | ( subset @ ( sK19_C @ SY580 @ SV368 ) @ SV368 ) ) )
            | ( SY580
              = ( powerset @ SV368 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1565]) ).

thf(1641,plain,
    ! [SV369: $i] :
      ( ( ! [SY581: $i] :
            ( ( SY581
             != ( powerset @ SV369 ) )
            | ~ ( ~ ! [SY582: $i] :
                      ( ~ ( in @ SY582 @ SY581 )
                      | ( subset @ SY582 @ SV369 ) )
                | ~ ! [SY583: $i] :
                      ( ~ ( subset @ SY583 @ SV369 )
                      | ( in @ SY583 @ SY581 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1566]) ).

thf(1642,plain,
    ! [SV341: $i,SV301: $i] :
      ( ( ~ ! [SY556: $i] :
              ( ! [SY557: $i] :
                  ( ( ordered_pair @ SV301 @ SV341 )
                 != ( ordered_pair @ SY556 @ SY557 ) )
              | ( SV301 = SY556 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1567]) ).

thf(1643,plain,
    ! [SV341: $i,SV301: $i] :
      ( ( ~ ! [SY558: $i,SY559: $i] :
              ( ( ( ordered_pair @ SV301 @ SV341 )
               != ( ordered_pair @ SY558 @ SY559 ) )
              | ( SV341 = SY559 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1567]) ).

thf(1644,plain,
    ! [SV302: $i] :
      ( ( ! [SY525: $i,SY526: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                          | ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SV302 ) )
                      | ~ ( ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                          | ~ ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY525 ) ) )
                | ~ ( ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY526 )
                    | ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SV302 )
                    | ( in @ ( sK17_D @ SY526 @ SY525 @ SV302 ) @ SY525 ) ) )
            | ( SY526
              = ( set_union2 @ SV302 @ SY525 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1568]) ).

thf(1645,plain,
    ! [SV302: $i] :
      ( ( ! [SY527: $i,SY528: $i] :
            ( ( SY528
             != ( set_union2 @ SV302 @ SY527 ) )
            | ~ ( ~ ! [SY529: $i] :
                      ( ~ ( in @ SY529 @ SY528 )
                      | ( in @ SY529 @ SV302 )
                      | ( in @ SY529 @ SY527 ) )
                | ~ ~ ( ~ ! [SY530: $i] :
                            ( ~ ( in @ SY530 @ SV302 )
                            | ( in @ SY530 @ SY528 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SY527 )
                            | ( in @ SX3 @ SY528 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1569]) ).

thf(1646,plain,
    ! [SV370: $i] :
      ( ( ! [SY584: $i] :
            ( ~ ( ~ ( ! [SY585: $i] :
                        ( ~ ( in @ ( sK8_C @ SY584 @ SV370 ) @ SY585 )
                        | ~ ( in @ SY585 @ SV370 ) )
                    | ~ ( in @ ( sK8_C @ SY584 @ SV370 ) @ SY584 ) )
                | ~ ( ~ ( ~ ( in @ ( sK8_C @ SY584 @ SV370 ) @ ( sK9_SY185 @ SY584 @ SV370 ) )
                        | ~ ( in @ ( sK9_SY185 @ SY584 @ SV370 ) @ SV370 ) )
                    | ( in @ ( sK8_C @ SY584 @ SV370 ) @ SY584 ) ) )
            | ( SY584
              = ( union @ SV370 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1570]) ).

thf(1647,plain,
    ! [SV371: $i] :
      ( ( ! [SY586: $i] :
            ( ( SY586
             != ( union @ SV371 ) )
            | ~ ( ~ ! [SY587: $i] :
                      ( ! [SY588: $i] :
                          ( ~ ( in @ SY587 @ SY588 )
                          | ~ ( in @ SY588 @ SV371 ) )
                      | ( in @ SY587 @ SY586 ) )
                | ~ ! [SY589: $i] :
                      ( ~ ( in @ SY589 @ SY586 )
                      | ~ ( ~ ( in @ SY589 @ ( sK7_D @ SY589 @ SY586 @ SV371 ) )
                          | ~ ( in @ ( sK7_D @ SY589 @ SY586 @ SV371 ) @ SV371 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1571]) ).

thf(1648,plain,
    ! [SV303: $i] :
      ( ( ! [SY532: $i,SY533: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SV303 )
                    | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY532 )
                    | ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) )
                | ~ ~ ( ~ ( ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SV303 )
                          | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) )
                      | ~ ( ~ ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY532 )
                          | ( in @ ( sK6_D @ SY533 @ SY532 @ SV303 ) @ SY533 ) ) ) )
            | ( SY533
              = ( set_difference @ SV303 @ SY532 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1572]) ).

thf(1649,plain,
    ! [SV303: $i] :
      ( ( ! [SY534: $i,SY535: $i] :
            ( ( SY535
             != ( set_difference @ SV303 @ SY534 ) )
            | ~ ( ~ ! [SY536: $i] :
                      ( ~ ( in @ SY536 @ SV303 )
                      | ( in @ SY536 @ SY534 )
                      | ( in @ SY536 @ SY535 ) )
                | ~ ~ ( ~ ! [SY537: $i] :
                            ( ~ ( in @ SY537 @ SY535 )
                            | ( in @ SY537 @ SV303 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SY535 )
                            | ~ ( in @ SX3 @ SY534 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1573]) ).

thf(1650,plain,
    ! [SV372: $i] :
      ( ( ( in @ ( sK20_B @ SV372 ) @ SV372 )
        | ( SV372 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1574]) ).

thf(1651,plain,
    ! [SV373: $i] :
      ( ( ( SV373 != empty_set )
        | ! [SY590: $i] :
            ~ ( in @ SY590 @ SV373 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1575]) ).

thf(1652,plain,
    ! [SV374: $i] :
      ( ( ! [SY591: $i] :
            ( ~ ( in @ SV374 @ SY591 )
            | ( subset @ ( singleton @ SV374 ) @ SY591 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1576]) ).

thf(1653,plain,
    ! [SV375: $i] :
      ( ( ! [SY592: $i] :
            ( ~ ( subset @ ( singleton @ SV375 ) @ SY592 )
            | ( in @ SV375 @ SY592 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1577]) ).

thf(1654,plain,
    ! [SV376: $i] :
      ( ( ! [SY593: $i] :
            ( ( disjoint @ SV376 @ SY593 )
            | ~ ( ~ ( in @ ( sK23_C @ SY593 @ SV376 ) @ SV376 )
                | ~ ( in @ ( sK23_C @ SY593 @ SV376 ) @ SY593 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1578]) ).

thf(1655,plain,
    ! [SV377: $i] :
      ( ( ! [SY594: $i] :
            ( ! [SY595: $i] :
                ( ~ ( in @ SY595 @ SV377 )
                | ~ ( in @ SY595 @ SY594 ) )
            | ~ ( disjoint @ SV377 @ SY594 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1579]) ).

thf(1656,plain,
    ! [SV378: $i] :
      ( ( ! [SY596: $i] :
            ( ~ ( subset @ SV378 @ SY596 )
            | ~ ( subset @ SY596 @ SV378 )
            | ( SV378 = SY596 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1580]) ).

thf(1657,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 != SX1 )
            | ( subset @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 != SX1 )
            | ( subset @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[1581]) ).

thf(1658,plain,
    ! [SV379: $i] :
      ( ( ! [SY597: $i] :
            ( ~ ( ~ ( in @ ( sK11_C @ SY597 @ SV379 ) @ SV379 )
                | ~ ~ ( in @ ( sK11_C @ SY597 @ SV379 ) @ SY597 ) )
            | ( subset @ SV379 @ SY597 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1582]) ).

thf(1659,plain,
    ! [SV380: $i] :
      ( ( ! [SY598: $i] :
            ( ~ ( subset @ SV380 @ SY598 )
            | ! [SY599: $i] :
                ( ~ ( in @ SY599 @ SV380 )
                | ( in @ SY599 @ SY598 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1583]) ).

thf(1660,plain,
    ! [SV305: $i,SV247: $i] :
      ( ( ( in @ SV247 @ SV305 )
        = $false )
      | ( ( disjoint @ ( singleton @ SV247 ) @ SV305 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1585]) ).

thf(1661,plain,
    ! [SV307: $i,SV249: $i,SV381: $i] :
      ( ( ( ( in @ SV381 @ SV249 )
          | ( subset @ SV249 @ ( set_difference @ SV307 @ ( singleton @ SV381 ) ) ) )
        = $true )
      | ( ( subset @ SV249 @ SV307 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1586]) ).

thf(1662,plain,
    ! [SV309: $i,SV342: $i,SV350: $i,SV251: $i] :
      ( ( ( SV251 = SV350 )
        = $true )
      | ( ( ( SV251 = SV342 )
          | ( ( unordered_pair @ SV251 @ SV309 )
           != ( unordered_pair @ SV342 @ SV350 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1588]) ).

thf(1663,plain,
    ! [SV343: $i,SV312: $i,SV254: $i] :
      ( ( ( ~ ( subset @ SV254 @ SV312 ) )
        = $true )
      | ( ( ~ ( subset @ SV254 @ SV343 ) )
        = $true )
      | ( ( subset @ SV254 @ ( set_intersection2 @ SV312 @ SV343 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1590]) ).

thf(1664,plain,
    ! [SV344: $i,SV313: $i,SV255: $i] :
      ( ( ( ~ ( subset @ SV255 @ SV313 ) )
        = $true )
      | ( ( ~ ( subset @ SV313 @ SV344 ) )
        = $true )
      | ( ( subset @ SV255 @ SV344 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1591]) ).

thf(1665,plain,
    ! [SV314: $i,SV382: $i,SV256: $i] :
      ( ( ( subset @ ( set_intersection2 @ SV256 @ SV382 ) @ ( set_intersection2 @ SV314 @ SV382 ) )
        = $true )
      | ( ( subset @ SV256 @ SV314 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1592]) ).

thf(1666,plain,
    ! [SV316: $i,SV383: $i,SV259: $i] :
      ( ( ( subset @ ( set_difference @ SV259 @ SV383 ) @ ( set_difference @ SV316 @ SV383 ) )
        = $true )
      | ( ( subset @ SV259 @ SV316 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1594]) ).

thf(1667,plain,
    ! [SV322: $i,SV266: $i] :
      ( ( ( subset @ SV266 @ SV322 )
        = $false )
      | ( ( proper_subset @ SV322 @ SV266 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1596]) ).

thf(1668,plain,
    ! [SV267: $i,SV345: $i,SV323: $i] :
      ( ( ( ~ ( disjoint @ SV323 @ SV345 ) )
        = $true )
      | ( ( ~ ( subset @ SV267 @ SV323 ) )
        = $true )
      | ( ( disjoint @ SV267 @ SV345 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1597]) ).

thf(1669,plain,
    ! [SV346: $i,SV326: $i,SV271: $i] :
      ( ( ( ~ ( subset @ SV271 @ SV326 ) )
        = $true )
      | ( ( ~ ( subset @ SV346 @ SV326 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV271 @ SV346 ) @ SV326 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1599]) ).

thf(1670,plain,
    ! [SV351: $i,SV327: $i,SV272: $i] :
      ( ( ( ( singleton @ SV272 )
          = ( unordered_pair @ SV327 @ SV351 ) )
        = $false )
      | ( ( SV272 = SV327 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1600]) ).

thf(1671,plain,
    ! [SV347: $i,SV328: $i,SV273: $i] :
      ( ( ( ( singleton @ SV273 )
          = ( unordered_pair @ SV328 @ SV347 ) )
        = $false )
      | ( ( SV328 = SV347 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1601]) ).

thf(1672,plain,
    ! [SV274: $i,SV329: $i] :
      ( ( ( in @ SV329 @ SV274 )
        = $false )
      | ( ( in @ SV274 @ SV329 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1602]) ).

thf(1673,plain,
    ! [SV275: $i,SV330: $i] :
      ( ( ( proper_subset @ SV330 @ SV275 )
        = $false )
      | ( ( proper_subset @ SV275 @ SV330 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1603]) ).

thf(1674,plain,
    ! [SV337: $i,SV293: $i] :
      ( ( ( in @ SV293 @ SV337 )
        = $false )
      | ( ( empty @ SV337 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1607]) ).

thf(1675,plain,
    ! [SV338: $i,SV294: $i] :
      ( ( ( empty @ SV294 )
        = $false )
      | ( ( SV294 = SV338 )
        = $true )
      | ( ( ~ ( empty @ SV338 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1608]) ).

thf(1676,plain,
    ! [SV384: $i,SV295: $i] :
      ( ( ! [SY600: $i] :
            ( ~ ( in @ SV295 @ SY600 )
            | ~ ( in @ SV384 @ SY600 )
            | ( subset @ ( unordered_pair @ SV295 @ SV384 ) @ SY600 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1609]) ).

thf(1677,plain,
    ! [SV295: $i] :
      ( ( ~ ! [SY484: $i,SY485: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV295 @ SY484 ) @ SY485 )
              | ( in @ SV295 @ SY485 ) )
        | ~ ! [SY486: $i,SY487: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV295 @ SY486 ) @ SY487 )
              | ( in @ SY486 @ SY487 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1610]) ).

thf(1678,plain,
    ! [SV385: $i,SV352: $i] :
      ( ( ( ( set_difference @ SV352 @ SV385 )
         != empty_set )
        | ( subset @ SV352 @ SV385 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1611]) ).

thf(1679,plain,
    ! [SV386: $i,SV353: $i] :
      ( ( ~ ( subset @ SV353 @ SV386 )
        | ( ( set_difference @ SV353 @ SV386 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1612]) ).

thf(1680,plain,
    ! [SV387: $i,SV354: $i] :
      ( ( ( ( set_difference @ SV354 @ SV387 )
         != SV354 )
        | ( disjoint @ SV354 @ SV387 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1613]) ).

thf(1681,plain,
    ! [SV388: $i,SV355: $i] :
      ( ( ~ ( disjoint @ SV355 @ SV388 )
        | ( ( set_difference @ SV355 @ SV388 )
          = SV355 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1614]) ).

thf(1682,plain,
    ! [SV389: $i,SV356: $i] :
      ( ( ~ ( in @ SV356 @ SV389 )
        | ( subset @ ( singleton @ SV356 ) @ SV389 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1615]) ).

thf(1683,plain,
    ! [SV390: $i,SV357: $i] :
      ( ( ~ ( subset @ ( singleton @ SV357 ) @ SV390 )
        | ( in @ SV357 @ SV390 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1616]) ).

thf(1684,plain,
    ! [SV391: $i,SV358: $i] :
      ( ( ( ( set_difference @ SV358 @ SV391 )
         != empty_set )
        | ( subset @ SV358 @ SV391 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1619]) ).

thf(1685,plain,
    ! [SV392: $i,SV359: $i] :
      ( ( ~ ( subset @ SV359 @ SV392 )
        | ( ( set_difference @ SV359 @ SV392 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1620]) ).

thf(1686,plain,
    ! [SV393: $i,SV296: $i] :
      ( ( ! [SY601: $i] :
            ( ~ ( ~ ( ! [SY602: $i,SY603: $i] :
                        ( ~ ( in @ SY602 @ SV296 )
                        | ~ ( in @ SY603 @ SV393 )
                        | ( ( sK14_D @ SY601 @ SV393 @ SV296 )
                         != ( ordered_pair @ SY602 @ SY603 ) ) )
                    | ~ ( in @ ( sK14_D @ SY601 @ SV393 @ SV296 ) @ SY601 ) )
                | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SY601 @ SV393 @ SV296 ) @ SV296 )
                              | ~ ( in @ ( sK16_SY191 @ SY601 @ SV393 @ SV296 ) @ SV393 ) )
                        | ( ( sK14_D @ SY601 @ SV393 @ SV296 )
                         != ( ordered_pair @ ( sK15_SY189 @ SY601 @ SV393 @ SV296 ) @ ( sK16_SY191 @ SY601 @ SV393 @ SV296 ) ) ) )
                    | ( in @ ( sK14_D @ SY601 @ SV393 @ SV296 ) @ SY601 ) ) )
            | ( SY601
              = ( cartesian_product2 @ SV296 @ SV393 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1621]) ).

thf(1687,plain,
    ! [SV394: $i,SV296: $i] :
      ( ( ! [SY604: $i] :
            ( ( SY604
             != ( cartesian_product2 @ SV296 @ SV394 ) )
            | ~ ( ~ ! [SY605: $i] :
                      ( ! [SY606: $i,SY607: $i] :
                          ( ~ ( in @ SY606 @ SV296 )
                          | ~ ( in @ SY607 @ SV394 )
                          | ( SY605
                           != ( ordered_pair @ SY606 @ SY607 ) ) )
                      | ( in @ SY605 @ SY604 ) )
                | ~ ! [SY608: $i] :
                      ( ~ ( in @ SY608 @ SY604 )
                      | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY608 @ SY604 @ SV394 @ SV296 ) @ SV296 )
                                | ~ ( in @ ( sK13_SY186 @ SY608 @ SY604 @ SV394 @ SV296 ) @ SV394 ) )
                          | ( SY608
                           != ( ordered_pair @ ( sK12_E @ SY608 @ SY604 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SY608 @ SY604 @ SV394 @ SV296 ) ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1622]) ).

thf(1688,plain,
    ! [SV395: $i,SV360: $i] :
      ( ( ~ ( subset @ SV360 @ ( singleton @ SV395 ) )
        | ( SV360 = empty_set )
        | ( SV360
          = ( singleton @ SV395 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1623]) ).

thf(1689,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1624]) ).

thf(1690,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0
             != ( singleton @ SX1 ) )
            | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1624]) ).

thf(1691,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ~ ( ~ ( ( ( sK21_C @ SV396 @ SV361 )
                 != SV361 )
                | ~ ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) )
            | ~ ( ( ( sK21_C @ SV396 @ SV361 )
                  = SV361 )
                | ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) ) )
        | ( SV396
          = ( singleton @ SV361 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1625]) ).

thf(1692,plain,
    ! [SV362: $i,SV397: $i] :
      ( ( ( SV397
         != ( singleton @ SV362 ) )
        | ~ ( ~ ! [SY609: $i] :
                  ( ( SY609 != SV362 )
                  | ( in @ SY609 @ SV397 ) )
            | ~ ! [SY610: $i] :
                  ( ~ ( in @ SY610 @ SV397 )
                  | ( SY610 = SV362 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1626]) ).

thf(1693,plain,
    ! [SV297: $i,SV398: $i] :
      ( ( ! [SY611: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SY611 @ SV398 @ SV297 ) @ SV297 )
                    | ~ ( in @ ( sK10_D @ SY611 @ SV398 @ SV297 ) @ SV398 )
                    | ~ ( in @ ( sK10_D @ SY611 @ SV398 @ SV297 ) @ SY611 ) )
                | ~ ~ ( ~ ( ( in @ ( sK10_D @ SY611 @ SV398 @ SV297 ) @ SV297 )
                          | ( in @ ( sK10_D @ SY611 @ SV398 @ SV297 ) @ SY611 ) )
                      | ~ ( ( in @ ( sK10_D @ SY611 @ SV398 @ SV297 ) @ SV398 )
                          | ( in @ ( sK10_D @ SY611 @ SV398 @ SV297 ) @ SY611 ) ) ) )
            | ( SY611
              = ( set_intersection2 @ SV297 @ SV398 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1627]) ).

thf(1694,plain,
    ! [SV399: $i,SV297: $i] :
      ( ( ! [SY612: $i] :
            ( ( SY612
             != ( set_intersection2 @ SV297 @ SV399 ) )
            | ~ ( ~ ! [SY613: $i] :
                      ( ~ ( in @ SY613 @ SV297 )
                      | ~ ( in @ SY613 @ SV399 )
                      | ( in @ SY613 @ SY612 ) )
                | ~ ~ ( ~ ! [SY503: $i] :
                            ( ~ ( in @ SY503 @ SY612 )
                            | ( in @ SY503 @ SV297 ) )
                      | ~ ! [SY615: $i] :
                            ( ~ ( in @ SY615 @ SY612 )
                            | ( in @ SY615 @ SV399 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1628]) ).

thf(1695,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
              | ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) ) )
        = $false )
      | ( ( SV298 = SV339 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1629]) ).

thf(1696,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ( ~ ( ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
              | ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) ) )
        = $false )
      | ( ( SV298 = SV339 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1629]) ).

thf(1697,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ! [SY550: $i,SY551: $i] :
            ( ~ ( in @ SV299 @ SY550 )
            | ~ ( in @ SV340 @ SY551 )
            | ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY550 @ SY551 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1630]) ).

thf(1698,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ~ ( ~ ! [SY552: $i] :
                  ( ! [SY553: $i] :
                      ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY552 @ SY553 ) )
                  | ( in @ SV299 @ SY552 ) )
            | ~ ! [SY554: $i,SY555: $i] :
                  ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY554 @ SY555 ) )
                  | ( in @ SV340 @ SY555 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1631]) ).

thf(1699,plain,
    ! [SV400: $i,SV363: $i] :
      ( ( ( SV363 = SV400 )
        | ~ ( subset @ SV363 @ SV400 )
        | ( proper_subset @ SV363 @ SV400 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1632]) ).

thf(1700,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( proper_subset @ SX0 @ SX1 )
            | ( SX0 != SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1633]) ).

thf(1701,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( proper_subset @ SX0 @ SX1 )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1633]) ).

thf(1702,plain,
    ! [SV401: $i,SV364: $i] :
      ( ( ( ( set_intersection2 @ SV364 @ SV401 )
         != empty_set )
        | ( disjoint @ SV364 @ SV401 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1634]) ).

thf(1703,plain,
    ! [SV402: $i,SV365: $i] :
      ( ( ~ ( disjoint @ SV365 @ SV402 )
        | ( ( set_intersection2 @ SV365 @ SV402 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1635]) ).

thf(1704,plain,
    ! [SV300: $i,SV403: $i] :
      ( ( ! [SY616: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SY616 @ SV403 @ SV300 ) @ SY616 )
                          | ( ( sK18_D @ SY616 @ SV403 @ SV300 )
                           != SV300 ) )
                      | ~ ( ~ ( in @ ( sK18_D @ SY616 @ SV403 @ SV300 ) @ SY616 )
                          | ( ( sK18_D @ SY616 @ SV403 @ SV300 )
                           != SV403 ) ) )
                | ~ ( ( in @ ( sK18_D @ SY616 @ SV403 @ SV300 ) @ SY616 )
                    | ( ( sK18_D @ SY616 @ SV403 @ SV300 )
                      = SV300 )
                    | ( ( sK18_D @ SY616 @ SV403 @ SV300 )
                      = SV403 ) ) )
            | ( SY616
              = ( unordered_pair @ SV300 @ SV403 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1636]) ).

thf(1705,plain,
    ! [SV404: $i,SV300: $i] :
      ( ( ! [SY617: $i] :
            ( ( SY617
             != ( unordered_pair @ SV300 @ SV404 ) )
            | ~ ( ~ ! [SY618: $i] :
                      ( ~ ( in @ SY618 @ SY617 )
                      | ( SY618 = SV300 )
                      | ( SY618 = SV404 ) )
                | ~ ~ ( ~ ! [SY518: $i] :
                            ( ( SY518 != SV300 )
                            | ( in @ SY518 @ SY617 ) )
                      | ~ ! [SY620: $i] :
                            ( ( SY620 != SV404 )
                            | ( in @ SY620 @ SY617 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1637]) ).

thf(1706,plain,
    ! [SV405: $i,SV366: $i] :
      ( ( ( disjoint @ SV366 @ SV405 )
        | ( in @ ( sK22_C @ SV405 @ SV366 ) @ ( set_intersection2 @ SV366 @ SV405 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1638]) ).

thf(1707,plain,
    ! [SV406: $i,SV367: $i] :
      ( ( ! [SY621: $i] :
            ~ ( in @ SY621 @ ( set_intersection2 @ SV367 @ SV406 ) )
        | ~ ( disjoint @ SV367 @ SV406 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1639]) ).

thf(1708,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
                | ~ ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) )
            | ~ ( ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
                | ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) ) )
        | ( SV407
          = ( powerset @ SV368 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1640]) ).

thf(1709,plain,
    ! [SV369: $i,SV408: $i] :
      ( ( ( SV408
         != ( powerset @ SV369 ) )
        | ~ ( ~ ! [SY622: $i] :
                  ( ~ ( in @ SY622 @ SV408 )
                  | ( subset @ SY622 @ SV369 ) )
            | ~ ! [SY623: $i] :
                  ( ~ ( subset @ SY623 @ SV369 )
                  | ( in @ SY623 @ SV408 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1641]) ).

thf(1710,plain,
    ! [SV341: $i,SV301: $i] :
      ( ( ! [SY556: $i] :
            ( ! [SY557: $i] :
                ( ( ordered_pair @ SV301 @ SV341 )
               != ( ordered_pair @ SY556 @ SY557 ) )
            | ( SV301 = SY556 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1642]) ).

thf(1711,plain,
    ! [SV341: $i,SV301: $i] :
      ( ( ! [SY558: $i,SY559: $i] :
            ( ( ( ordered_pair @ SV301 @ SV341 )
             != ( ordered_pair @ SY558 @ SY559 ) )
            | ( SV341 = SY559 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1643]) ).

thf(1712,plain,
    ! [SV302: $i,SV409: $i] :
      ( ( ! [SY624: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SY624 @ SV409 @ SV302 ) @ SY624 )
                          | ~ ( in @ ( sK17_D @ SY624 @ SV409 @ SV302 ) @ SV302 ) )
                      | ~ ( ~ ( in @ ( sK17_D @ SY624 @ SV409 @ SV302 ) @ SY624 )
                          | ~ ( in @ ( sK17_D @ SY624 @ SV409 @ SV302 ) @ SV409 ) ) )
                | ~ ( ( in @ ( sK17_D @ SY624 @ SV409 @ SV302 ) @ SY624 )
                    | ( in @ ( sK17_D @ SY624 @ SV409 @ SV302 ) @ SV302 )
                    | ( in @ ( sK17_D @ SY624 @ SV409 @ SV302 ) @ SV409 ) ) )
            | ( SY624
              = ( set_union2 @ SV302 @ SV409 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1644]) ).

thf(1713,plain,
    ! [SV410: $i,SV302: $i] :
      ( ( ! [SY625: $i] :
            ( ( SY625
             != ( set_union2 @ SV302 @ SV410 ) )
            | ~ ( ~ ! [SY626: $i] :
                      ( ~ ( in @ SY626 @ SY625 )
                      | ( in @ SY626 @ SV302 )
                      | ( in @ SY626 @ SV410 ) )
                | ~ ~ ( ~ ! [SY530: $i] :
                            ( ~ ( in @ SY530 @ SV302 )
                            | ( in @ SY530 @ SY625 ) )
                      | ~ ! [SY628: $i] :
                            ( ~ ( in @ SY628 @ SV410 )
                            | ( in @ SY628 @ SY625 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1645]) ).

thf(1714,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ~ ( ~ ( ! [SY629: $i] :
                    ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SY629 )
                    | ~ ( in @ SY629 @ SV370 ) )
                | ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) )
            | ~ ( ~ ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ ( sK9_SY185 @ SV411 @ SV370 ) )
                    | ~ ( in @ ( sK9_SY185 @ SV411 @ SV370 ) @ SV370 ) )
                | ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) ) )
        | ( SV411
          = ( union @ SV370 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1646]) ).

thf(1715,plain,
    ! [SV371: $i,SV412: $i] :
      ( ( ( SV412
         != ( union @ SV371 ) )
        | ~ ( ~ ! [SY630: $i] :
                  ( ! [SY588: $i] :
                      ( ~ ( in @ SY630 @ SY588 )
                      | ~ ( in @ SY588 @ SV371 ) )
                  | ( in @ SY630 @ SV412 ) )
            | ~ ! [SY632: $i] :
                  ( ~ ( in @ SY632 @ SV412 )
                  | ~ ( ~ ( in @ SY632 @ ( sK7_D @ SY632 @ SV412 @ SV371 ) )
                      | ~ ( in @ ( sK7_D @ SY632 @ SV412 @ SV371 ) @ SV371 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1647]) ).

thf(1716,plain,
    ! [SV303: $i,SV413: $i] :
      ( ( ! [SY633: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SY633 @ SV413 @ SV303 ) @ SV303 )
                    | ( in @ ( sK6_D @ SY633 @ SV413 @ SV303 ) @ SV413 )
                    | ~ ( in @ ( sK6_D @ SY633 @ SV413 @ SV303 ) @ SY633 ) )
                | ~ ~ ( ~ ( ( in @ ( sK6_D @ SY633 @ SV413 @ SV303 ) @ SV303 )
                          | ( in @ ( sK6_D @ SY633 @ SV413 @ SV303 ) @ SY633 ) )
                      | ~ ( ~ ( in @ ( sK6_D @ SY633 @ SV413 @ SV303 ) @ SV413 )
                          | ( in @ ( sK6_D @ SY633 @ SV413 @ SV303 ) @ SY633 ) ) ) )
            | ( SY633
              = ( set_difference @ SV303 @ SV413 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1648]) ).

thf(1717,plain,
    ! [SV414: $i,SV303: $i] :
      ( ( ! [SY634: $i] :
            ( ( SY634
             != ( set_difference @ SV303 @ SV414 ) )
            | ~ ( ~ ! [SY635: $i] :
                      ( ~ ( in @ SY635 @ SV303 )
                      | ( in @ SY635 @ SV414 )
                      | ( in @ SY635 @ SY634 ) )
                | ~ ~ ( ~ ! [SY537: $i] :
                            ( ~ ( in @ SY537 @ SY634 )
                            | ( in @ SY537 @ SV303 ) )
                      | ~ ! [SY637: $i] :
                            ( ~ ( in @ SY637 @ SY634 )
                            | ~ ( in @ SY637 @ SV414 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1649]) ).

thf(1718,plain,
    ! [SV372: $i] :
      ( ( ( in @ ( sK20_B @ SV372 ) @ SV372 )
        = $true )
      | ( ( SV372 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1650]) ).

thf(1719,plain,
    ! [SV373: $i] :
      ( ( ( ( SV373 != empty_set ) )
        = $true )
      | ( ( ! [SY590: $i] :
              ~ ( in @ SY590 @ SV373 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1651]) ).

thf(1720,plain,
    ! [SV415: $i,SV374: $i] :
      ( ( ~ ( in @ SV374 @ SV415 )
        | ( subset @ ( singleton @ SV374 ) @ SV415 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1652]) ).

thf(1721,plain,
    ! [SV416: $i,SV375: $i] :
      ( ( ~ ( subset @ ( singleton @ SV375 ) @ SV416 )
        | ( in @ SV375 @ SV416 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1653]) ).

thf(1722,plain,
    ! [SV417: $i,SV376: $i] :
      ( ( ( disjoint @ SV376 @ SV417 )
        | ~ ( ~ ( in @ ( sK23_C @ SV417 @ SV376 ) @ SV376 )
            | ~ ( in @ ( sK23_C @ SV417 @ SV376 ) @ SV417 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1654]) ).

thf(1723,plain,
    ! [SV418: $i,SV377: $i] :
      ( ( ! [SY638: $i] :
            ( ~ ( in @ SY638 @ SV377 )
            | ~ ( in @ SY638 @ SV418 ) )
        | ~ ( disjoint @ SV377 @ SV418 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1655]) ).

thf(1724,plain,
    ! [SV419: $i,SV378: $i] :
      ( ( ~ ( subset @ SV378 @ SV419 )
        | ~ ( subset @ SV419 @ SV378 )
        | ( SV378 = SV419 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1656]) ).

thf(1725,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 != SX1 )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1657]) ).

thf(1726,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 != SX1 )
            | ( subset @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[1657]) ).

thf(1727,plain,
    ! [SV379: $i,SV420: $i] :
      ( ( ~ ( ~ ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV379 )
            | ~ ~ ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV420 ) )
        | ( subset @ SV379 @ SV420 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1658]) ).

thf(1728,plain,
    ! [SV421: $i,SV380: $i] :
      ( ( ~ ( subset @ SV380 @ SV421 )
        | ! [SY639: $i] :
            ( ~ ( in @ SY639 @ SV380 )
            | ( in @ SY639 @ SV421 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1659]) ).

thf(1729,plain,
    ! [SV307: $i,SV249: $i,SV381: $i] :
      ( ( ( in @ SV381 @ SV249 )
        = $true )
      | ( ( subset @ SV249 @ ( set_difference @ SV307 @ ( singleton @ SV381 ) ) )
        = $true )
      | ( ( subset @ SV249 @ SV307 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1661]) ).

thf(1730,plain,
    ! [SV350: $i,SV309: $i,SV342: $i,SV251: $i] :
      ( ( ( SV251 = SV342 )
        = $true )
      | ( ( ( ( unordered_pair @ SV251 @ SV309 )
           != ( unordered_pair @ SV342 @ SV350 ) ) )
        = $true )
      | ( ( SV251 = SV350 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1662]) ).

thf(1731,plain,
    ! [SV343: $i,SV312: $i,SV254: $i] :
      ( ( ( subset @ SV254 @ SV312 )
        = $false )
      | ( ( ~ ( subset @ SV254 @ SV343 ) )
        = $true )
      | ( ( subset @ SV254 @ ( set_intersection2 @ SV312 @ SV343 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1663]) ).

thf(1732,plain,
    ! [SV344: $i,SV313: $i,SV255: $i] :
      ( ( ( subset @ SV255 @ SV313 )
        = $false )
      | ( ( ~ ( subset @ SV313 @ SV344 ) )
        = $true )
      | ( ( subset @ SV255 @ SV344 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1664]) ).

thf(1733,plain,
    ! [SV267: $i,SV345: $i,SV323: $i] :
      ( ( ( disjoint @ SV323 @ SV345 )
        = $false )
      | ( ( ~ ( subset @ SV267 @ SV323 ) )
        = $true )
      | ( ( disjoint @ SV267 @ SV345 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1668]) ).

thf(1734,plain,
    ! [SV346: $i,SV326: $i,SV271: $i] :
      ( ( ( subset @ SV271 @ SV326 )
        = $false )
      | ( ( ~ ( subset @ SV346 @ SV326 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV271 @ SV346 ) @ SV326 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1669]) ).

thf(1735,plain,
    ! [SV294: $i,SV338: $i] :
      ( ( ( empty @ SV338 )
        = $false )
      | ( ( SV294 = SV338 )
        = $true )
      | ( ( empty @ SV294 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1675]) ).

thf(1736,plain,
    ! [SV384: $i,SV422: $i,SV295: $i] :
      ( ( ~ ( in @ SV295 @ SV422 )
        | ~ ( in @ SV384 @ SV422 )
        | ( subset @ ( unordered_pair @ SV295 @ SV384 ) @ SV422 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1676]) ).

thf(1737,plain,
    ! [SV295: $i] :
      ( ( ~ ! [SY484: $i,SY485: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV295 @ SY484 ) @ SY485 )
              | ( in @ SV295 @ SY485 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1677]) ).

thf(1738,plain,
    ! [SV295: $i] :
      ( ( ~ ! [SY486: $i,SY487: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV295 @ SY486 ) @ SY487 )
              | ( in @ SY486 @ SY487 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1677]) ).

thf(1739,plain,
    ! [SV385: $i,SV352: $i] :
      ( ( ( ( ( set_difference @ SV352 @ SV385 )
           != empty_set ) )
        = $true )
      | ( ( subset @ SV352 @ SV385 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1678]) ).

thf(1740,plain,
    ! [SV386: $i,SV353: $i] :
      ( ( ( ~ ( subset @ SV353 @ SV386 ) )
        = $true )
      | ( ( ( set_difference @ SV353 @ SV386 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1679]) ).

thf(1741,plain,
    ! [SV387: $i,SV354: $i] :
      ( ( ( ( ( set_difference @ SV354 @ SV387 )
           != SV354 ) )
        = $true )
      | ( ( disjoint @ SV354 @ SV387 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1680]) ).

thf(1742,plain,
    ! [SV388: $i,SV355: $i] :
      ( ( ( ~ ( disjoint @ SV355 @ SV388 ) )
        = $true )
      | ( ( ( set_difference @ SV355 @ SV388 )
          = SV355 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1681]) ).

thf(1743,plain,
    ! [SV389: $i,SV356: $i] :
      ( ( ( ~ ( in @ SV356 @ SV389 ) )
        = $true )
      | ( ( subset @ ( singleton @ SV356 ) @ SV389 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1682]) ).

thf(1744,plain,
    ! [SV390: $i,SV357: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV357 ) @ SV390 ) )
        = $true )
      | ( ( in @ SV357 @ SV390 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1683]) ).

thf(1745,plain,
    ! [SV391: $i,SV358: $i] :
      ( ( ( ( ( set_difference @ SV358 @ SV391 )
           != empty_set ) )
        = $true )
      | ( ( subset @ SV358 @ SV391 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1684]) ).

thf(1746,plain,
    ! [SV392: $i,SV359: $i] :
      ( ( ( ~ ( subset @ SV359 @ SV392 ) )
        = $true )
      | ( ( ( set_difference @ SV359 @ SV392 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1685]) ).

thf(1747,plain,
    ! [SV423: $i,SV393: $i,SV296: $i] :
      ( ( ~ ( ~ ( ! [SY640: $i,SY641: $i] :
                    ( ~ ( in @ SY640 @ SV296 )
                    | ~ ( in @ SY641 @ SV393 )
                    | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
                     != ( ordered_pair @ SY640 @ SY641 ) ) )
                | ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
            | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
                          | ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) )
                    | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
                     != ( ordered_pair @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) ) ) )
                | ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) ) )
        | ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1686]) ).

thf(1748,plain,
    ! [SV394: $i,SV296: $i,SV424: $i] :
      ( ( ( SV424
         != ( cartesian_product2 @ SV296 @ SV394 ) )
        | ~ ( ~ ! [SY642: $i] :
                  ( ! [SY606: $i,SY607: $i] :
                      ( ~ ( in @ SY606 @ SV296 )
                      | ~ ( in @ SY607 @ SV394 )
                      | ( SY642
                       != ( ordered_pair @ SY606 @ SY607 ) ) )
                  | ( in @ SY642 @ SV424 ) )
            | ~ ! [SY645: $i] :
                  ( ~ ( in @ SY645 @ SV424 )
                  | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                            | ~ ( in @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
                      | ( SY645
                       != ( ordered_pair @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1687]) ).

thf(1749,plain,
    ! [SV395: $i,SV360: $i] :
      ( ( ( ~ ( subset @ SV360 @ ( singleton @ SV395 ) ) )
        = $true )
      | ( ( ( SV360 = empty_set )
          | ( SV360
            = ( singleton @ SV395 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1688]) ).

thf(1750,plain,
    ( ( ! [SX0: $i] :
          ( ( SX0 != empty_set )
          | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1689]) ).

thf(1751,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0
           != ( singleton @ SX1 ) )
          | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1690]) ).

thf(1752,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ( ~ ( ~ ( ( ( sK21_C @ SV396 @ SV361 )
                   != SV361 )
                  | ~ ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) )
              | ~ ( ( ( sK21_C @ SV396 @ SV361 )
                    = SV361 )
                  | ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) ) ) )
        = $true )
      | ( ( SV396
          = ( singleton @ SV361 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1691]) ).

thf(1753,plain,
    ! [SV362: $i,SV397: $i] :
      ( ( ( ( SV397
           != ( singleton @ SV362 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY609: $i] :
                    ( ( SY609 != SV362 )
                    | ( in @ SY609 @ SV397 ) )
              | ~ ! [SY610: $i] :
                    ( ~ ( in @ SY610 @ SV397 )
                    | ( SY610 = SV362 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1692]) ).

thf(1754,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
                | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
                | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
            | ~ ~ ( ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
                      | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
                  | ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
                      | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) ) ) )
        | ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1693]) ).

thf(1755,plain,
    ! [SV399: $i,SV297: $i,SV426: $i] :
      ( ( ( SV426
         != ( set_intersection2 @ SV297 @ SV399 ) )
        | ~ ( ~ ! [SY646: $i] :
                  ( ~ ( in @ SY646 @ SV297 )
                  | ~ ( in @ SY646 @ SV399 )
                  | ( in @ SY646 @ SV426 ) )
            | ~ ~ ( ~ ! [SY647: $i] :
                        ( ~ ( in @ SY647 @ SV426 )
                        | ( in @ SY647 @ SV297 ) )
                  | ~ ! [SY648: $i] :
                        ( ~ ( in @ SY648 @ SV426 )
                        | ( in @ SY648 @ SV399 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1694]) ).

thf(1756,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ( ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
          | ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) )
        = $true )
      | ( ( SV298 = SV339 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1695]) ).

thf(1757,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ( ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
          | ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) )
        = $true )
      | ( ( SV298 = SV339 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1696]) ).

thf(1758,plain,
    ! [SV340: $i,SV427: $i,SV299: $i] :
      ( ( ! [SY649: $i] :
            ( ~ ( in @ SV299 @ SV427 )
            | ~ ( in @ SV340 @ SY649 )
            | ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV427 @ SY649 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1697]) ).

thf(1759,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ~ ! [SY552: $i] :
              ( ! [SY553: $i] :
                  ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY552 @ SY553 ) )
              | ( in @ SV299 @ SY552 ) )
        | ~ ! [SY554: $i,SY555: $i] :
              ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY554 @ SY555 ) )
              | ( in @ SV340 @ SY555 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1698]) ).

thf(1760,plain,
    ! [SV400: $i,SV363: $i] :
      ( ( ( ( SV363 = SV400 )
          | ~ ( subset @ SV363 @ SV400 ) )
        = $true )
      | ( ( proper_subset @ SV363 @ SV400 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1699]) ).

thf(1761,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( proper_subset @ SX0 @ SX1 )
          | ( SX0 != SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1700]) ).

thf(1762,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( proper_subset @ SX0 @ SX1 )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1701]) ).

thf(1763,plain,
    ! [SV401: $i,SV364: $i] :
      ( ( ( ( ( set_intersection2 @ SV364 @ SV401 )
           != empty_set ) )
        = $true )
      | ( ( disjoint @ SV364 @ SV401 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1702]) ).

thf(1764,plain,
    ! [SV402: $i,SV365: $i] :
      ( ( ( ~ ( disjoint @ SV365 @ SV402 ) )
        = $true )
      | ( ( ( set_intersection2 @ SV365 @ SV402 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1703]) ).

thf(1765,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                      | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                       != SV300 ) )
                  | ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                      | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                       != SV403 ) ) )
            | ~ ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                  = SV300 )
                | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                  = SV403 ) ) )
        | ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1704]) ).

thf(1766,plain,
    ! [SV404: $i,SV300: $i,SV429: $i] :
      ( ( ( SV429
         != ( unordered_pair @ SV300 @ SV404 ) )
        | ~ ( ~ ! [SY650: $i] :
                  ( ~ ( in @ SY650 @ SV429 )
                  | ( SY650 = SV300 )
                  | ( SY650 = SV404 ) )
            | ~ ~ ( ~ ! [SY651: $i] :
                        ( ( SY651 != SV300 )
                        | ( in @ SY651 @ SV429 ) )
                  | ~ ! [SY652: $i] :
                        ( ( SY652 != SV404 )
                        | ( in @ SY652 @ SV429 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1705]) ).

thf(1767,plain,
    ! [SV405: $i,SV366: $i] :
      ( ( ( disjoint @ SV366 @ SV405 )
        = $true )
      | ( ( in @ ( sK22_C @ SV405 @ SV366 ) @ ( set_intersection2 @ SV366 @ SV405 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1706]) ).

thf(1768,plain,
    ! [SV406: $i,SV367: $i] :
      ( ( ( ! [SY621: $i] :
              ~ ( in @ SY621 @ ( set_intersection2 @ SV367 @ SV406 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV367 @ SV406 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1707]) ).

thf(1769,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
                  | ~ ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) )
              | ~ ( ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
                  | ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) ) ) )
        = $true )
      | ( ( SV407
          = ( powerset @ SV368 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1708]) ).

thf(1770,plain,
    ! [SV369: $i,SV408: $i] :
      ( ( ( ( SV408
           != ( powerset @ SV369 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY622: $i] :
                    ( ~ ( in @ SY622 @ SV408 )
                    | ( subset @ SY622 @ SV369 ) )
              | ~ ! [SY623: $i] :
                    ( ~ ( subset @ SY623 @ SV369 )
                    | ( in @ SY623 @ SV408 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1709]) ).

thf(1771,plain,
    ! [SV430: $i,SV341: $i,SV301: $i] :
      ( ( ! [SY653: $i] :
            ( ( ordered_pair @ SV301 @ SV341 )
           != ( ordered_pair @ SV430 @ SY653 ) )
        | ( SV301 = SV430 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1710]) ).

thf(1772,plain,
    ! [SV431: $i,SV341: $i,SV301: $i] :
      ( ( ! [SY654: $i] :
            ( ( ( ordered_pair @ SV301 @ SV341 )
             != ( ordered_pair @ SV431 @ SY654 ) )
            | ( SV341 = SY654 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1711]) ).

thf(1773,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                      | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 ) )
                  | ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                      | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) )
            | ~ ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 )
                | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) )
        | ( SV432
          = ( set_union2 @ SV302 @ SV409 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1712]) ).

thf(1774,plain,
    ! [SV410: $i,SV302: $i,SV433: $i] :
      ( ( ( SV433
         != ( set_union2 @ SV302 @ SV410 ) )
        | ~ ( ~ ! [SY655: $i] :
                  ( ~ ( in @ SY655 @ SV433 )
                  | ( in @ SY655 @ SV302 )
                  | ( in @ SY655 @ SV410 ) )
            | ~ ~ ( ~ ! [SY656: $i] :
                        ( ~ ( in @ SY656 @ SV302 )
                        | ( in @ SY656 @ SV433 ) )
                  | ~ ! [SY657: $i] :
                        ( ~ ( in @ SY657 @ SV410 )
                        | ( in @ SY657 @ SV433 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1713]) ).

thf(1775,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ~ ( ~ ( ! [SY629: $i] :
                      ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SY629 )
                      | ~ ( in @ SY629 @ SV370 ) )
                  | ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) )
              | ~ ( ~ ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ ( sK9_SY185 @ SV411 @ SV370 ) )
                      | ~ ( in @ ( sK9_SY185 @ SV411 @ SV370 ) @ SV370 ) )
                  | ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) ) ) )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1714]) ).

thf(1776,plain,
    ! [SV371: $i,SV412: $i] :
      ( ( ( ( SV412
           != ( union @ SV371 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY630: $i] :
                    ( ! [SY588: $i] :
                        ( ~ ( in @ SY630 @ SY588 )
                        | ~ ( in @ SY588 @ SV371 ) )
                    | ( in @ SY630 @ SV412 ) )
              | ~ ! [SY632: $i] :
                    ( ~ ( in @ SY632 @ SV412 )
                    | ~ ( ~ ( in @ SY632 @ ( sK7_D @ SY632 @ SV412 @ SV371 ) )
                        | ~ ( in @ ( sK7_D @ SY632 @ SV412 @ SV371 ) @ SV371 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1715]) ).

thf(1777,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
                | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
                | ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
            | ~ ~ ( ~ ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
                      | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
                  | ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
                      | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) ) ) )
        | ( SV434
          = ( set_difference @ SV303 @ SV413 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1716]) ).

thf(1778,plain,
    ! [SV414: $i,SV303: $i,SV435: $i] :
      ( ( ( SV435
         != ( set_difference @ SV303 @ SV414 ) )
        | ~ ( ~ ! [SY658: $i] :
                  ( ~ ( in @ SY658 @ SV303 )
                  | ( in @ SY658 @ SV414 )
                  | ( in @ SY658 @ SV435 ) )
            | ~ ~ ( ~ ! [SY659: $i] :
                        ( ~ ( in @ SY659 @ SV435 )
                        | ( in @ SY659 @ SV303 ) )
                  | ~ ! [SY660: $i] :
                        ( ~ ( in @ SY660 @ SV435 )
                        | ~ ( in @ SY660 @ SV414 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1717]) ).

thf(1779,plain,
    ! [SV373: $i] :
      ( ( ( SV373 = empty_set )
        = $false )
      | ( ( ! [SY590: $i] :
              ~ ( in @ SY590 @ SV373 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1719]) ).

thf(1780,plain,
    ! [SV415: $i,SV374: $i] :
      ( ( ( ~ ( in @ SV374 @ SV415 ) )
        = $true )
      | ( ( subset @ ( singleton @ SV374 ) @ SV415 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1720]) ).

thf(1781,plain,
    ! [SV416: $i,SV375: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV375 ) @ SV416 ) )
        = $true )
      | ( ( in @ SV375 @ SV416 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1721]) ).

thf(1782,plain,
    ! [SV417: $i,SV376: $i] :
      ( ( ( disjoint @ SV376 @ SV417 )
        = $true )
      | ( ( ~ ( ~ ( in @ ( sK23_C @ SV417 @ SV376 ) @ SV376 )
              | ~ ( in @ ( sK23_C @ SV417 @ SV376 ) @ SV417 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1722]) ).

thf(1783,plain,
    ! [SV418: $i,SV377: $i] :
      ( ( ( ! [SY638: $i] :
              ( ~ ( in @ SY638 @ SV377 )
              | ~ ( in @ SY638 @ SV418 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV377 @ SV418 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1723]) ).

thf(1784,plain,
    ! [SV419: $i,SV378: $i] :
      ( ( ( ~ ( subset @ SV378 @ SV419 )
          | ~ ( subset @ SV419 @ SV378 ) )
        = $true )
      | ( ( SV378 = SV419 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1724]) ).

thf(1785,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0 != SX1 )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1725]) ).

thf(1786,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0 != SX1 )
          | ( subset @ SX1 @ SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[1726]) ).

thf(1787,plain,
    ! [SV379: $i,SV420: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV379 )
              | ~ ~ ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV420 ) ) )
        = $true )
      | ( ( subset @ SV379 @ SV420 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1727]) ).

thf(1788,plain,
    ! [SV421: $i,SV380: $i] :
      ( ( ( ~ ( subset @ SV380 @ SV421 ) )
        = $true )
      | ( ( ! [SY639: $i] :
              ( ~ ( in @ SY639 @ SV380 )
              | ( in @ SY639 @ SV421 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1728]) ).

thf(1789,plain,
    ! [SV350: $i,SV342: $i,SV309: $i,SV251: $i] :
      ( ( ( ( unordered_pair @ SV251 @ SV309 )
          = ( unordered_pair @ SV342 @ SV350 ) )
        = $false )
      | ( ( SV251 = SV342 )
        = $true )
      | ( ( SV251 = SV350 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1730]) ).

thf(1790,plain,
    ! [SV312: $i,SV343: $i,SV254: $i] :
      ( ( ( subset @ SV254 @ SV343 )
        = $false )
      | ( ( subset @ SV254 @ SV312 )
        = $false )
      | ( ( subset @ SV254 @ ( set_intersection2 @ SV312 @ SV343 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1731]) ).

thf(1791,plain,
    ! [SV255: $i,SV344: $i,SV313: $i] :
      ( ( ( subset @ SV313 @ SV344 )
        = $false )
      | ( ( subset @ SV255 @ SV313 )
        = $false )
      | ( ( subset @ SV255 @ SV344 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1732]) ).

thf(1792,plain,
    ! [SV345: $i,SV323: $i,SV267: $i] :
      ( ( ( subset @ SV267 @ SV323 )
        = $false )
      | ( ( disjoint @ SV323 @ SV345 )
        = $false )
      | ( ( disjoint @ SV267 @ SV345 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1733]) ).

thf(1793,plain,
    ! [SV271: $i,SV326: $i,SV346: $i] :
      ( ( ( subset @ SV346 @ SV326 )
        = $false )
      | ( ( subset @ SV271 @ SV326 )
        = $false )
      | ( ( subset @ ( set_union2 @ SV271 @ SV346 ) @ SV326 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1734]) ).

thf(1794,plain,
    ! [SV384: $i,SV422: $i,SV295: $i] :
      ( ( ( ~ ( in @ SV295 @ SV422 )
          | ~ ( in @ SV384 @ SV422 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV295 @ SV384 ) @ SV422 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1736]) ).

thf(1795,plain,
    ! [SV295: $i] :
      ( ( ! [SY484: $i,SY485: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV295 @ SY484 ) @ SY485 )
            | ( in @ SV295 @ SY485 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1737]) ).

thf(1796,plain,
    ! [SV295: $i] :
      ( ( ! [SY486: $i,SY487: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV295 @ SY486 ) @ SY487 )
            | ( in @ SY486 @ SY487 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1738]) ).

thf(1797,plain,
    ! [SV385: $i,SV352: $i] :
      ( ( ( ( set_difference @ SV352 @ SV385 )
          = empty_set )
        = $false )
      | ( ( subset @ SV352 @ SV385 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1739]) ).

thf(1798,plain,
    ! [SV386: $i,SV353: $i] :
      ( ( ( subset @ SV353 @ SV386 )
        = $false )
      | ( ( ( set_difference @ SV353 @ SV386 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1740]) ).

thf(1799,plain,
    ! [SV387: $i,SV354: $i] :
      ( ( ( ( set_difference @ SV354 @ SV387 )
          = SV354 )
        = $false )
      | ( ( disjoint @ SV354 @ SV387 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1741]) ).

thf(1800,plain,
    ! [SV388: $i,SV355: $i] :
      ( ( ( disjoint @ SV355 @ SV388 )
        = $false )
      | ( ( ( set_difference @ SV355 @ SV388 )
          = SV355 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1742]) ).

thf(1801,plain,
    ! [SV389: $i,SV356: $i] :
      ( ( ( in @ SV356 @ SV389 )
        = $false )
      | ( ( subset @ ( singleton @ SV356 ) @ SV389 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1743]) ).

thf(1802,plain,
    ! [SV390: $i,SV357: $i] :
      ( ( ( subset @ ( singleton @ SV357 ) @ SV390 )
        = $false )
      | ( ( in @ SV357 @ SV390 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1744]) ).

thf(1803,plain,
    ! [SV391: $i,SV358: $i] :
      ( ( ( ( set_difference @ SV358 @ SV391 )
          = empty_set )
        = $false )
      | ( ( subset @ SV358 @ SV391 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1745]) ).

thf(1804,plain,
    ! [SV392: $i,SV359: $i] :
      ( ( ( subset @ SV359 @ SV392 )
        = $false )
      | ( ( ( set_difference @ SV359 @ SV392 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1746]) ).

thf(1805,plain,
    ! [SV423: $i,SV393: $i,SV296: $i] :
      ( ( ( ~ ( ~ ( ! [SY640: $i,SY641: $i] :
                      ( ~ ( in @ SY640 @ SV296 )
                      | ~ ( in @ SY641 @ SV393 )
                      | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
                       != ( ordered_pair @ SY640 @ SY641 ) ) )
                  | ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
              | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
                            | ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) )
                      | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
                       != ( ordered_pair @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) ) ) )
                  | ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) ) ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1747]) ).

thf(1806,plain,
    ! [SV394: $i,SV296: $i,SV424: $i] :
      ( ( ( ( SV424
           != ( cartesian_product2 @ SV296 @ SV394 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY642: $i] :
                    ( ! [SY606: $i,SY607: $i] :
                        ( ~ ( in @ SY606 @ SV296 )
                        | ~ ( in @ SY607 @ SV394 )
                        | ( SY642
                         != ( ordered_pair @ SY606 @ SY607 ) ) )
                    | ( in @ SY642 @ SV424 ) )
              | ~ ! [SY645: $i] :
                    ( ~ ( in @ SY645 @ SV424 )
                    | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                              | ~ ( in @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
                        | ( SY645
                         != ( ordered_pair @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) ) ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1748]) ).

thf(1807,plain,
    ! [SV395: $i,SV360: $i] :
      ( ( ( subset @ SV360 @ ( singleton @ SV395 ) )
        = $false )
      | ( ( ( SV360 = empty_set )
          | ( SV360
            = ( singleton @ SV395 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1749]) ).

thf(1808,plain,
    ! [SV436: $i] :
      ( ( ( SV436 != empty_set )
        | ! [SY661: $i] : ( subset @ SV436 @ ( singleton @ SY661 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1750]) ).

thf(1809,plain,
    ! [SV437: $i] :
      ( ( ! [SY662: $i] :
            ( ( SV437
             != ( singleton @ SY662 ) )
            | ( subset @ SV437 @ ( singleton @ SY662 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1751]) ).

thf(1810,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ( ~ ( ( ( sK21_C @ SV396 @ SV361 )
               != SV361 )
              | ~ ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) )
          | ~ ( ( ( sK21_C @ SV396 @ SV361 )
                = SV361 )
              | ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) ) )
        = $false )
      | ( ( SV396
          = ( singleton @ SV361 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1752]) ).

thf(1811,plain,
    ! [SV362: $i,SV397: $i] :
      ( ( ( SV397
          = ( singleton @ SV362 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY609: $i] :
                    ( ( SY609 != SV362 )
                    | ( in @ SY609 @ SV397 ) )
              | ~ ! [SY610: $i] :
                    ( ~ ( in @ SY610 @ SV397 )
                    | ( SY610 = SV362 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1753]) ).

thf(1812,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
                  | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
                  | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
              | ~ ~ ( ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
                        | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
                    | ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
                        | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) ) ) ) )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1754]) ).

thf(1813,plain,
    ! [SV399: $i,SV297: $i,SV426: $i] :
      ( ( ( ( SV426
           != ( set_intersection2 @ SV297 @ SV399 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY646: $i] :
                    ( ~ ( in @ SY646 @ SV297 )
                    | ~ ( in @ SY646 @ SV399 )
                    | ( in @ SY646 @ SV426 ) )
              | ~ ~ ( ~ ! [SY647: $i] :
                          ( ~ ( in @ SY647 @ SV426 )
                          | ( in @ SY647 @ SV297 ) )
                    | ~ ! [SY648: $i] :
                          ( ~ ( in @ SY648 @ SV426 )
                          | ( in @ SY648 @ SV399 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1755]) ).

thf(1814,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ( ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 ) )
        = $true )
      | ( ( ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) )
        = $true )
      | ( ( SV298 = SV339 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1756]) ).

thf(1815,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
        = $true )
      | ( ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 )
        = $true )
      | ( ( SV298 = SV339 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1757]) ).

thf(1816,plain,
    ! [SV438: $i,SV340: $i,SV427: $i,SV299: $i] :
      ( ( ~ ( in @ SV299 @ SV427 )
        | ~ ( in @ SV340 @ SV438 )
        | ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV427 @ SV438 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1758]) ).

thf(1817,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ~ ! [SY552: $i] :
              ( ! [SY553: $i] :
                  ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY552 @ SY553 ) )
              | ( in @ SV299 @ SY552 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1759]) ).

thf(1818,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ~ ! [SY554: $i,SY555: $i] :
              ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY554 @ SY555 ) )
              | ( in @ SV340 @ SY555 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1759]) ).

thf(1819,plain,
    ! [SV400: $i,SV363: $i] :
      ( ( ( SV363 = SV400 )
        = $true )
      | ( ( ~ ( subset @ SV363 @ SV400 ) )
        = $true )
      | ( ( proper_subset @ SV363 @ SV400 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1760]) ).

thf(1820,plain,
    ! [SV439: $i] :
      ( ( ! [SY663: $i] :
            ( ~ ( proper_subset @ SV439 @ SY663 )
            | ( SV439 != SY663 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1761]) ).

thf(1821,plain,
    ! [SV440: $i] :
      ( ( ! [SY664: $i] :
            ( ~ ( proper_subset @ SV440 @ SY664 )
            | ( subset @ SV440 @ SY664 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1762]) ).

thf(1822,plain,
    ! [SV401: $i,SV364: $i] :
      ( ( ( ( set_intersection2 @ SV364 @ SV401 )
          = empty_set )
        = $false )
      | ( ( disjoint @ SV364 @ SV401 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1763]) ).

thf(1823,plain,
    ! [SV402: $i,SV365: $i] :
      ( ( ( disjoint @ SV365 @ SV402 )
        = $false )
      | ( ( ( set_intersection2 @ SV365 @ SV402 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1764]) ).

thf(1824,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                        | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                         != SV300 ) )
                    | ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                        | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                         != SV403 ) ) )
              | ~ ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                  | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                    = SV300 )
                  | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                    = SV403 ) ) ) )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1765]) ).

thf(1825,plain,
    ! [SV404: $i,SV300: $i,SV429: $i] :
      ( ( ( ( SV429
           != ( unordered_pair @ SV300 @ SV404 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY650: $i] :
                    ( ~ ( in @ SY650 @ SV429 )
                    | ( SY650 = SV300 )
                    | ( SY650 = SV404 ) )
              | ~ ~ ( ~ ! [SY651: $i] :
                          ( ( SY651 != SV300 )
                          | ( in @ SY651 @ SV429 ) )
                    | ~ ! [SY652: $i] :
                          ( ( SY652 != SV404 )
                          | ( in @ SY652 @ SV429 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1766]) ).

thf(1826,plain,
    ! [SV406: $i,SV367: $i,SV441: $i] :
      ( ( ( ~ ( in @ SV441 @ ( set_intersection2 @ SV367 @ SV406 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV367 @ SV406 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1768]) ).

thf(1827,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
              | ~ ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) )
          | ~ ( ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
              | ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) ) )
        = $false )
      | ( ( SV407
          = ( powerset @ SV368 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1769]) ).

thf(1828,plain,
    ! [SV369: $i,SV408: $i] :
      ( ( ( SV408
          = ( powerset @ SV369 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY622: $i] :
                    ( ~ ( in @ SY622 @ SV408 )
                    | ( subset @ SY622 @ SV369 ) )
              | ~ ! [SY623: $i] :
                    ( ~ ( subset @ SY623 @ SV369 )
                    | ( in @ SY623 @ SV408 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1770]) ).

thf(1829,plain,
    ! [SV430: $i,SV341: $i,SV301: $i] :
      ( ( ( ! [SY653: $i] :
              ( ( ordered_pair @ SV301 @ SV341 )
             != ( ordered_pair @ SV430 @ SY653 ) ) )
        = $true )
      | ( ( SV301 = SV430 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1771]) ).

thf(1830,plain,
    ! [SV442: $i,SV431: $i,SV341: $i,SV301: $i] :
      ( ( ( ( ordered_pair @ SV301 @ SV341 )
         != ( ordered_pair @ SV431 @ SV442 ) )
        | ( SV341 = SV442 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1772]) ).

thf(1831,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                        | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 ) )
                    | ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                        | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) )
              | ~ ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                  | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 )
                  | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) ) )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1773]) ).

thf(1832,plain,
    ! [SV410: $i,SV302: $i,SV433: $i] :
      ( ( ( ( SV433
           != ( set_union2 @ SV302 @ SV410 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY655: $i] :
                    ( ~ ( in @ SY655 @ SV433 )
                    | ( in @ SY655 @ SV302 )
                    | ( in @ SY655 @ SV410 ) )
              | ~ ~ ( ~ ! [SY656: $i] :
                          ( ~ ( in @ SY656 @ SV302 )
                          | ( in @ SY656 @ SV433 ) )
                    | ~ ! [SY657: $i] :
                          ( ~ ( in @ SY657 @ SV410 )
                          | ( in @ SY657 @ SV433 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1774]) ).

thf(1833,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ~ ( ! [SY629: $i] :
                  ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SY629 )
                  | ~ ( in @ SY629 @ SV370 ) )
              | ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) )
          | ~ ( ~ ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ ( sK9_SY185 @ SV411 @ SV370 ) )
                  | ~ ( in @ ( sK9_SY185 @ SV411 @ SV370 ) @ SV370 ) )
              | ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) ) )
        = $false )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1775]) ).

thf(1834,plain,
    ! [SV371: $i,SV412: $i] :
      ( ( ( SV412
          = ( union @ SV371 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY630: $i] :
                    ( ! [SY588: $i] :
                        ( ~ ( in @ SY630 @ SY588 )
                        | ~ ( in @ SY588 @ SV371 ) )
                    | ( in @ SY630 @ SV412 ) )
              | ~ ! [SY632: $i] :
                    ( ~ ( in @ SY632 @ SV412 )
                    | ~ ( ~ ( in @ SY632 @ ( sK7_D @ SY632 @ SV412 @ SV371 ) )
                        | ~ ( in @ ( sK7_D @ SY632 @ SV412 @ SV371 ) @ SV371 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1776]) ).

thf(1835,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
                  | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
                  | ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
              | ~ ~ ( ~ ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
                        | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
                    | ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
                        | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) ) ) ) )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1777]) ).

thf(1836,plain,
    ! [SV414: $i,SV303: $i,SV435: $i] :
      ( ( ( ( SV435
           != ( set_difference @ SV303 @ SV414 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY658: $i] :
                    ( ~ ( in @ SY658 @ SV303 )
                    | ( in @ SY658 @ SV414 )
                    | ( in @ SY658 @ SV435 ) )
              | ~ ~ ( ~ ! [SY659: $i] :
                          ( ~ ( in @ SY659 @ SV435 )
                          | ( in @ SY659 @ SV303 ) )
                    | ~ ! [SY660: $i] :
                          ( ~ ( in @ SY660 @ SV435 )
                          | ~ ( in @ SY660 @ SV414 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1778]) ).

thf(1837,plain,
    ! [SV373: $i,SV443: $i] :
      ( ( ( ~ ( in @ SV443 @ SV373 ) )
        = $true )
      | ( ( SV373 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1779]) ).

thf(1838,plain,
    ! [SV415: $i,SV374: $i] :
      ( ( ( in @ SV374 @ SV415 )
        = $false )
      | ( ( subset @ ( singleton @ SV374 ) @ SV415 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1780]) ).

thf(1839,plain,
    ! [SV416: $i,SV375: $i] :
      ( ( ( subset @ ( singleton @ SV375 ) @ SV416 )
        = $false )
      | ( ( in @ SV375 @ SV416 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1781]) ).

thf(1840,plain,
    ! [SV376: $i,SV417: $i] :
      ( ( ( ~ ( in @ ( sK23_C @ SV417 @ SV376 ) @ SV376 )
          | ~ ( in @ ( sK23_C @ SV417 @ SV376 ) @ SV417 ) )
        = $false )
      | ( ( disjoint @ SV376 @ SV417 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1782]) ).

thf(1841,plain,
    ! [SV418: $i,SV377: $i,SV444: $i] :
      ( ( ( ~ ( in @ SV444 @ SV377 )
          | ~ ( in @ SV444 @ SV418 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV377 @ SV418 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1783]) ).

thf(1842,plain,
    ! [SV419: $i,SV378: $i] :
      ( ( ( ~ ( subset @ SV378 @ SV419 ) )
        = $true )
      | ( ( ~ ( subset @ SV419 @ SV378 ) )
        = $true )
      | ( ( SV378 = SV419 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1784]) ).

thf(1843,plain,
    ! [SV445: $i] :
      ( ( ! [SY665: $i] :
            ( ( SV445 != SY665 )
            | ( subset @ SV445 @ SY665 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1785]) ).

thf(1844,plain,
    ! [SV446: $i] :
      ( ( ! [SY666: $i] :
            ( ( SV446 != SY666 )
            | ( subset @ SY666 @ SV446 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1786]) ).

thf(1845,plain,
    ! [SV379: $i,SV420: $i] :
      ( ( ( ~ ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV379 )
          | ~ ~ ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV420 ) )
        = $false )
      | ( ( subset @ SV379 @ SV420 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1787]) ).

thf(1846,plain,
    ! [SV421: $i,SV380: $i] :
      ( ( ( subset @ SV380 @ SV421 )
        = $false )
      | ( ( ! [SY639: $i] :
              ( ~ ( in @ SY639 @ SV380 )
              | ( in @ SY639 @ SV421 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1788]) ).

thf(1847,plain,
    ! [SV384: $i,SV422: $i,SV295: $i] :
      ( ( ( ~ ( in @ SV295 @ SV422 ) )
        = $true )
      | ( ( ~ ( in @ SV384 @ SV422 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV295 @ SV384 ) @ SV422 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1794]) ).

thf(1848,plain,
    ! [SV447: $i,SV295: $i] :
      ( ( ! [SY667: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV295 @ SV447 ) @ SY667 )
            | ( in @ SV295 @ SY667 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1795]) ).

thf(1849,plain,
    ! [SV448: $i,SV295: $i] :
      ( ( ! [SY668: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV295 @ SV448 ) @ SY668 )
            | ( in @ SV448 @ SY668 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1796]) ).

thf(1850,plain,
    ! [SV423: $i,SV393: $i,SV296: $i] :
      ( ( ( ~ ( ! [SY640: $i,SY641: $i] :
                  ( ~ ( in @ SY640 @ SV296 )
                  | ~ ( in @ SY641 @ SV393 )
                  | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
                   != ( ordered_pair @ SY640 @ SY641 ) ) )
              | ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
          | ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
                        | ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) )
                  | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
                   != ( ordered_pair @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) ) ) )
              | ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) ) )
        = $false )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1805]) ).

thf(1851,plain,
    ! [SV394: $i,SV296: $i,SV424: $i] :
      ( ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY642: $i] :
                    ( ! [SY606: $i,SY607: $i] :
                        ( ~ ( in @ SY606 @ SV296 )
                        | ~ ( in @ SY607 @ SV394 )
                        | ( SY642
                         != ( ordered_pair @ SY606 @ SY607 ) ) )
                    | ( in @ SY642 @ SV424 ) )
              | ~ ! [SY645: $i] :
                    ( ~ ( in @ SY645 @ SV424 )
                    | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                              | ~ ( in @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
                        | ( SY645
                         != ( ordered_pair @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) ) ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1806]) ).

thf(1852,plain,
    ! [SV395: $i,SV360: $i] :
      ( ( ( SV360 = empty_set )
        = $true )
      | ( ( SV360
          = ( singleton @ SV395 ) )
        = $true )
      | ( ( subset @ SV360 @ ( singleton @ SV395 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1807]) ).

thf(1853,plain,
    ! [SV436: $i] :
      ( ( ( ( SV436 != empty_set ) )
        = $true )
      | ( ( ! [SY661: $i] : ( subset @ SV436 @ ( singleton @ SY661 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1808]) ).

thf(1854,plain,
    ! [SV449: $i,SV437: $i] :
      ( ( ( SV437
         != ( singleton @ SV449 ) )
        | ( subset @ SV437 @ ( singleton @ SV449 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1809]) ).

thf(1855,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ( ~ ( ( ( sK21_C @ SV396 @ SV361 )
               != SV361 )
              | ~ ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) ) )
        = $false )
      | ( ( SV396
          = ( singleton @ SV361 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1810]) ).

thf(1856,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ( ~ ( ( ( sK21_C @ SV396 @ SV361 )
                = SV361 )
              | ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) ) )
        = $false )
      | ( ( SV396
          = ( singleton @ SV361 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1810]) ).

thf(1857,plain,
    ! [SV397: $i,SV362: $i] :
      ( ( ( ~ ! [SY609: $i] :
                ( ( SY609 != SV362 )
                | ( in @ SY609 @ SV397 ) )
          | ~ ! [SY610: $i] :
                ( ~ ( in @ SY610 @ SV397 )
                | ( SY610 = SV362 ) ) )
        = $false )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1811]) ).

thf(1858,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
              | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
              | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
          | ~ ~ ( ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
                    | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
                | ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
                    | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) ) ) )
        = $false )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1812]) ).

thf(1859,plain,
    ! [SV399: $i,SV297: $i,SV426: $i] :
      ( ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY646: $i] :
                    ( ~ ( in @ SY646 @ SV297 )
                    | ~ ( in @ SY646 @ SV399 )
                    | ( in @ SY646 @ SV426 ) )
              | ~ ~ ( ~ ! [SY647: $i] :
                          ( ~ ( in @ SY647 @ SV426 )
                          | ( in @ SY647 @ SV297 ) )
                    | ~ ! [SY648: $i] :
                          ( ~ ( in @ SY648 @ SV426 )
                          | ( in @ SY648 @ SV399 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1813]) ).

thf(1860,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
        = $false )
      | ( ( ~ ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 ) )
        = $true )
      | ( ( SV298 = SV339 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1814]) ).

thf(1861,plain,
    ! [SV438: $i,SV340: $i,SV427: $i,SV299: $i] :
      ( ( ( ~ ( in @ SV299 @ SV427 )
          | ~ ( in @ SV340 @ SV438 ) )
        = $true )
      | ( ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV427 @ SV438 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1816]) ).

thf(1862,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ! [SY552: $i] :
            ( ! [SY553: $i] :
                ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY552 @ SY553 ) )
            | ( in @ SV299 @ SY552 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1817]) ).

thf(1863,plain,
    ! [SV340: $i,SV299: $i] :
      ( ( ! [SY554: $i,SY555: $i] :
            ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SY554 @ SY555 ) )
            | ( in @ SV340 @ SY555 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1818]) ).

thf(1864,plain,
    ! [SV400: $i,SV363: $i] :
      ( ( ( subset @ SV363 @ SV400 )
        = $false )
      | ( ( SV363 = SV400 )
        = $true )
      | ( ( proper_subset @ SV363 @ SV400 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1819]) ).

thf(1865,plain,
    ! [SV450: $i,SV439: $i] :
      ( ( ~ ( proper_subset @ SV439 @ SV450 )
        | ( SV439 != SV450 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1820]) ).

thf(1866,plain,
    ! [SV451: $i,SV440: $i] :
      ( ( ~ ( proper_subset @ SV440 @ SV451 )
        | ( subset @ SV440 @ SV451 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1821]) ).

thf(1867,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                    | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                     != SV300 ) )
                | ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                    | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                     != SV403 ) ) )
          | ~ ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
              | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                = SV300 )
              | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                = SV403 ) ) )
        = $false )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1824]) ).

thf(1868,plain,
    ! [SV404: $i,SV300: $i,SV429: $i] :
      ( ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY650: $i] :
                    ( ~ ( in @ SY650 @ SV429 )
                    | ( SY650 = SV300 )
                    | ( SY650 = SV404 ) )
              | ~ ~ ( ~ ! [SY651: $i] :
                          ( ( SY651 != SV300 )
                          | ( in @ SY651 @ SV429 ) )
                    | ~ ! [SY652: $i] :
                          ( ( SY652 != SV404 )
                          | ( in @ SY652 @ SV429 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1825]) ).

thf(1869,plain,
    ! [SV406: $i,SV367: $i,SV441: $i] :
      ( ( ( in @ SV441 @ ( set_intersection2 @ SV367 @ SV406 ) )
        = $false )
      | ( ( ~ ( disjoint @ SV367 @ SV406 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1826]) ).

thf(1870,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
              | ~ ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) ) )
        = $false )
      | ( ( SV407
          = ( powerset @ SV368 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1827]) ).

thf(1871,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ( ~ ( ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
              | ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) ) )
        = $false )
      | ( ( SV407
          = ( powerset @ SV368 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1827]) ).

thf(1872,plain,
    ! [SV369: $i,SV408: $i] :
      ( ( ( ~ ! [SY622: $i] :
                ( ~ ( in @ SY622 @ SV408 )
                | ( subset @ SY622 @ SV369 ) )
          | ~ ! [SY623: $i] :
                ( ~ ( subset @ SY623 @ SV369 )
                | ( in @ SY623 @ SV408 ) ) )
        = $false )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1828]) ).

thf(1873,plain,
    ! [SV452: $i,SV430: $i,SV341: $i,SV301: $i] :
      ( ( ( ( ( ordered_pair @ SV301 @ SV341 )
           != ( ordered_pair @ SV430 @ SV452 ) ) )
        = $true )
      | ( ( SV301 = SV430 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1829]) ).

thf(1874,plain,
    ! [SV442: $i,SV431: $i,SV341: $i,SV301: $i] :
      ( ( ( ( ( ordered_pair @ SV301 @ SV341 )
           != ( ordered_pair @ SV431 @ SV442 ) ) )
        = $true )
      | ( ( SV341 = SV442 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1830]) ).

thf(1875,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                    | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 ) )
                | ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                    | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) )
          | ~ ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
              | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 )
              | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) )
        = $false )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1831]) ).

thf(1876,plain,
    ! [SV410: $i,SV302: $i,SV433: $i] :
      ( ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY655: $i] :
                    ( ~ ( in @ SY655 @ SV433 )
                    | ( in @ SY655 @ SV302 )
                    | ( in @ SY655 @ SV410 ) )
              | ~ ~ ( ~ ! [SY656: $i] :
                          ( ~ ( in @ SY656 @ SV302 )
                          | ( in @ SY656 @ SV433 ) )
                    | ~ ! [SY657: $i] :
                          ( ~ ( in @ SY657 @ SV410 )
                          | ( in @ SY657 @ SV433 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1832]) ).

thf(1877,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ~ ( ! [SY629: $i] :
                  ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SY629 )
                  | ~ ( in @ SY629 @ SV370 ) )
              | ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) ) )
        = $false )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1833]) ).

thf(1878,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ ( sK9_SY185 @ SV411 @ SV370 ) )
                  | ~ ( in @ ( sK9_SY185 @ SV411 @ SV370 ) @ SV370 ) )
              | ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) ) )
        = $false )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1833]) ).

thf(1879,plain,
    ! [SV412: $i,SV371: $i] :
      ( ( ( ~ ! [SY630: $i] :
                ( ! [SY588: $i] :
                    ( ~ ( in @ SY630 @ SY588 )
                    | ~ ( in @ SY588 @ SV371 ) )
                | ( in @ SY630 @ SV412 ) )
          | ~ ! [SY632: $i] :
                ( ~ ( in @ SY632 @ SV412 )
                | ~ ( ~ ( in @ SY632 @ ( sK7_D @ SY632 @ SV412 @ SV371 ) )
                    | ~ ( in @ ( sK7_D @ SY632 @ SV412 @ SV371 ) @ SV371 ) ) ) )
        = $false )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1834]) ).

thf(1880,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
              | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
              | ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
          | ~ ~ ( ~ ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
                    | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
                | ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
                    | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) ) ) )
        = $false )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1835]) ).

thf(1881,plain,
    ! [SV414: $i,SV303: $i,SV435: $i] :
      ( ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY658: $i] :
                    ( ~ ( in @ SY658 @ SV303 )
                    | ( in @ SY658 @ SV414 )
                    | ( in @ SY658 @ SV435 ) )
              | ~ ~ ( ~ ! [SY659: $i] :
                          ( ~ ( in @ SY659 @ SV435 )
                          | ( in @ SY659 @ SV303 ) )
                    | ~ ! [SY660: $i] :
                          ( ~ ( in @ SY660 @ SV435 )
                          | ~ ( in @ SY660 @ SV414 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1836]) ).

thf(1882,plain,
    ! [SV373: $i,SV443: $i] :
      ( ( ( in @ SV443 @ SV373 )
        = $false )
      | ( ( SV373 = empty_set )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1837]) ).

thf(1883,plain,
    ! [SV376: $i,SV417: $i] :
      ( ( ( ~ ( in @ ( sK23_C @ SV417 @ SV376 ) @ SV376 ) )
        = $false )
      | ( ( disjoint @ SV376 @ SV417 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1840]) ).

thf(1884,plain,
    ! [SV376: $i,SV417: $i] :
      ( ( ( ~ ( in @ ( sK23_C @ SV417 @ SV376 ) @ SV417 ) )
        = $false )
      | ( ( disjoint @ SV376 @ SV417 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1840]) ).

thf(1885,plain,
    ! [SV418: $i,SV377: $i,SV444: $i] :
      ( ( ( ~ ( in @ SV444 @ SV377 ) )
        = $true )
      | ( ( ~ ( in @ SV444 @ SV418 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV377 @ SV418 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1841]) ).

thf(1886,plain,
    ! [SV419: $i,SV378: $i] :
      ( ( ( subset @ SV378 @ SV419 )
        = $false )
      | ( ( ~ ( subset @ SV419 @ SV378 ) )
        = $true )
      | ( ( SV378 = SV419 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1842]) ).

thf(1887,plain,
    ! [SV453: $i,SV445: $i] :
      ( ( ( SV445 != SV453 )
        | ( subset @ SV445 @ SV453 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1843]) ).

thf(1888,plain,
    ! [SV454: $i,SV446: $i] :
      ( ( ( SV446 != SV454 )
        | ( subset @ SV454 @ SV446 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1844]) ).

thf(1889,plain,
    ! [SV379: $i,SV420: $i] :
      ( ( ( ~ ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV379 ) )
        = $false )
      | ( ( subset @ SV379 @ SV420 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1845]) ).

thf(1890,plain,
    ! [SV379: $i,SV420: $i] :
      ( ( ( ~ ~ ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV420 ) )
        = $false )
      | ( ( subset @ SV379 @ SV420 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1845]) ).

thf(1891,plain,
    ! [SV421: $i,SV380: $i,SV455: $i] :
      ( ( ( ~ ( in @ SV455 @ SV380 )
          | ( in @ SV455 @ SV421 ) )
        = $true )
      | ( ( subset @ SV380 @ SV421 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1846]) ).

thf(1892,plain,
    ! [SV384: $i,SV422: $i,SV295: $i] :
      ( ( ( in @ SV295 @ SV422 )
        = $false )
      | ( ( ~ ( in @ SV384 @ SV422 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV295 @ SV384 ) @ SV422 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1847]) ).

thf(1893,plain,
    ! [SV456: $i,SV447: $i,SV295: $i] :
      ( ( ~ ( subset @ ( unordered_pair @ SV295 @ SV447 ) @ SV456 )
        | ( in @ SV295 @ SV456 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1848]) ).

thf(1894,plain,
    ! [SV457: $i,SV448: $i,SV295: $i] :
      ( ( ~ ( subset @ ( unordered_pair @ SV295 @ SV448 ) @ SV457 )
        | ( in @ SV448 @ SV457 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1849]) ).

thf(1895,plain,
    ! [SV423: $i,SV393: $i,SV296: $i] :
      ( ( ( ~ ( ! [SY640: $i,SY641: $i] :
                  ( ~ ( in @ SY640 @ SV296 )
                  | ~ ( in @ SY641 @ SV393 )
                  | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
                   != ( ordered_pair @ SY640 @ SY641 ) ) )
              | ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) ) )
        = $false )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1850]) ).

thf(1896,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ~ ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
                        | ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) )
                  | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
                   != ( ordered_pair @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) ) ) )
              | ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) ) )
        = $false )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1850]) ).

thf(1897,plain,
    ! [SV424: $i,SV394: $i,SV296: $i] :
      ( ( ( ~ ! [SY642: $i] :
                ( ! [SY606: $i,SY607: $i] :
                    ( ~ ( in @ SY606 @ SV296 )
                    | ~ ( in @ SY607 @ SV394 )
                    | ( SY642
                     != ( ordered_pair @ SY606 @ SY607 ) ) )
                | ( in @ SY642 @ SV424 ) )
          | ~ ! [SY645: $i] :
                ( ~ ( in @ SY645 @ SV424 )
                | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                          | ~ ( in @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
                    | ( SY645
                     != ( ordered_pair @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) ) ) ) ) )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1851]) ).

thf(1898,plain,
    ! [SV436: $i] :
      ( ( ( SV436 = empty_set )
        = $false )
      | ( ( ! [SY661: $i] : ( subset @ SV436 @ ( singleton @ SY661 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1853]) ).

thf(1899,plain,
    ! [SV449: $i,SV437: $i] :
      ( ( ( ( SV437
           != ( singleton @ SV449 ) ) )
        = $true )
      | ( ( subset @ SV437 @ ( singleton @ SV449 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1854]) ).

thf(1900,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ( ( ( sK21_C @ SV396 @ SV361 )
           != SV361 )
          | ~ ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) )
        = $true )
      | ( ( SV396
          = ( singleton @ SV361 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1855]) ).

thf(1901,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ( ( ( sK21_C @ SV396 @ SV361 )
            = SV361 )
          | ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) )
        = $true )
      | ( ( SV396
          = ( singleton @ SV361 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1856]) ).

thf(1902,plain,
    ! [SV397: $i,SV362: $i] :
      ( ( ( ~ ! [SY609: $i] :
                ( ( SY609 != SV362 )
                | ( in @ SY609 @ SV397 ) ) )
        = $false )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1857]) ).

thf(1903,plain,
    ! [SV362: $i,SV397: $i] :
      ( ( ( ~ ! [SY610: $i] :
                ( ~ ( in @ SY610 @ SV397 )
                | ( SY610 = SV362 ) ) )
        = $false )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1857]) ).

thf(1904,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
              | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
              | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) ) )
        = $false )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1858]) ).

thf(1905,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ~ ( ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
                    | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
                | ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
                    | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) ) ) )
        = $false )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1858]) ).

thf(1906,plain,
    ! [SV426: $i,SV399: $i,SV297: $i] :
      ( ( ( ~ ! [SY646: $i] :
                ( ~ ( in @ SY646 @ SV297 )
                | ~ ( in @ SY646 @ SV399 )
                | ( in @ SY646 @ SV426 ) )
          | ~ ~ ( ~ ! [SY647: $i] :
                      ( ~ ( in @ SY647 @ SV426 )
                      | ( in @ SY647 @ SV297 ) )
                | ~ ! [SY648: $i] :
                      ( ~ ( in @ SY648 @ SV426 )
                      | ( in @ SY648 @ SV399 ) ) ) )
        = $false )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1859]) ).

thf(1907,plain,
    ! [SV298: $i,SV339: $i] :
      ( ( ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV339 )
        = $false )
      | ( ( in @ ( sK3_C @ SV339 @ SV298 ) @ SV298 )
        = $false )
      | ( ( SV298 = SV339 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1860]) ).

thf(1908,plain,
    ! [SV438: $i,SV340: $i,SV427: $i,SV299: $i] :
      ( ( ( ~ ( in @ SV299 @ SV427 ) )
        = $true )
      | ( ( ~ ( in @ SV340 @ SV438 ) )
        = $true )
      | ( ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV427 @ SV438 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1861]) ).

thf(1909,plain,
    ! [SV458: $i,SV340: $i,SV299: $i] :
      ( ( ! [SY669: $i] :
            ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV458 @ SY669 ) )
        | ( in @ SV299 @ SV458 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1862]) ).

thf(1910,plain,
    ! [SV459: $i,SV340: $i,SV299: $i] :
      ( ( ! [SY670: $i] :
            ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV459 @ SY670 ) )
            | ( in @ SV340 @ SY670 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1863]) ).

thf(1911,plain,
    ! [SV450: $i,SV439: $i] :
      ( ( ( ~ ( proper_subset @ SV439 @ SV450 ) )
        = $true )
      | ( ( ( SV439 != SV450 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1865]) ).

thf(1912,plain,
    ! [SV451: $i,SV440: $i] :
      ( ( ( ~ ( proper_subset @ SV440 @ SV451 ) )
        = $true )
      | ( ( subset @ SV440 @ SV451 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1866]) ).

thf(1913,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                    | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                     != SV300 ) )
                | ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                    | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                     != SV403 ) ) ) )
        = $false )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1867]) ).

thf(1914,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
              | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                = SV300 )
              | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                = SV403 ) ) )
        = $false )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1867]) ).

thf(1915,plain,
    ! [SV404: $i,SV300: $i,SV429: $i] :
      ( ( ( ~ ! [SY650: $i] :
                ( ~ ( in @ SY650 @ SV429 )
                | ( SY650 = SV300 )
                | ( SY650 = SV404 ) )
          | ~ ~ ( ~ ! [SY651: $i] :
                      ( ( SY651 != SV300 )
                      | ( in @ SY651 @ SV429 ) )
                | ~ ! [SY652: $i] :
                      ( ( SY652 != SV404 )
                      | ( in @ SY652 @ SV429 ) ) ) )
        = $false )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1868]) ).

thf(1916,plain,
    ! [SV441: $i,SV406: $i,SV367: $i] :
      ( ( ( disjoint @ SV367 @ SV406 )
        = $false )
      | ( ( in @ SV441 @ ( set_intersection2 @ SV367 @ SV406 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1869]) ).

thf(1917,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ( ~ ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
          | ~ ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) )
        = $true )
      | ( ( SV407
          = ( powerset @ SV368 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1870]) ).

thf(1918,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ( ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
          | ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) )
        = $true )
      | ( ( SV407
          = ( powerset @ SV368 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1871]) ).

thf(1919,plain,
    ! [SV369: $i,SV408: $i] :
      ( ( ( ~ ! [SY622: $i] :
                ( ~ ( in @ SY622 @ SV408 )
                | ( subset @ SY622 @ SV369 ) ) )
        = $false )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1872]) ).

thf(1920,plain,
    ! [SV408: $i,SV369: $i] :
      ( ( ( ~ ! [SY623: $i] :
                ( ~ ( subset @ SY623 @ SV369 )
                | ( in @ SY623 @ SV408 ) ) )
        = $false )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1872]) ).

thf(1921,plain,
    ! [SV452: $i,SV430: $i,SV341: $i,SV301: $i] :
      ( ( ( ( ordered_pair @ SV301 @ SV341 )
          = ( ordered_pair @ SV430 @ SV452 ) )
        = $false )
      | ( ( SV301 = SV430 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1873]) ).

thf(1922,plain,
    ! [SV442: $i,SV431: $i,SV341: $i,SV301: $i] :
      ( ( ( ( ordered_pair @ SV301 @ SV341 )
          = ( ordered_pair @ SV431 @ SV442 ) )
        = $false )
      | ( ( SV341 = SV442 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1874]) ).

thf(1923,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                    | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 ) )
                | ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                    | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) ) )
        = $false )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1875]) ).

thf(1924,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
              | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 )
              | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) )
        = $false )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1875]) ).

thf(1925,plain,
    ! [SV410: $i,SV302: $i,SV433: $i] :
      ( ( ( ~ ! [SY655: $i] :
                ( ~ ( in @ SY655 @ SV433 )
                | ( in @ SY655 @ SV302 )
                | ( in @ SY655 @ SV410 ) )
          | ~ ~ ( ~ ! [SY656: $i] :
                      ( ~ ( in @ SY656 @ SV302 )
                      | ( in @ SY656 @ SV433 ) )
                | ~ ! [SY657: $i] :
                      ( ~ ( in @ SY657 @ SV410 )
                      | ( in @ SY657 @ SV433 ) ) ) )
        = $false )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1876]) ).

thf(1926,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ! [SY629: $i] :
              ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SY629 )
              | ~ ( in @ SY629 @ SV370 ) )
          | ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1877]) ).

thf(1927,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ ( sK9_SY185 @ SV411 @ SV370 ) )
              | ~ ( in @ ( sK9_SY185 @ SV411 @ SV370 ) @ SV370 ) )
          | ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1878]) ).

thf(1928,plain,
    ! [SV412: $i,SV371: $i] :
      ( ( ( ~ ! [SY630: $i] :
                ( ! [SY588: $i] :
                    ( ~ ( in @ SY630 @ SY588 )
                    | ~ ( in @ SY588 @ SV371 ) )
                | ( in @ SY630 @ SV412 ) ) )
        = $false )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1879]) ).

thf(1929,plain,
    ! [SV371: $i,SV412: $i] :
      ( ( ( ~ ! [SY632: $i] :
                ( ~ ( in @ SY632 @ SV412 )
                | ~ ( ~ ( in @ SY632 @ ( sK7_D @ SY632 @ SV412 @ SV371 ) )
                    | ~ ( in @ ( sK7_D @ SY632 @ SV412 @ SV371 ) @ SV371 ) ) ) )
        = $false )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1879]) ).

thf(1930,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
              | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
              | ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) ) )
        = $false )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1880]) ).

thf(1931,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ~ ( ~ ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
                    | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
                | ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
                    | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) ) ) )
        = $false )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1880]) ).

thf(1932,plain,
    ! [SV435: $i,SV414: $i,SV303: $i] :
      ( ( ( ~ ! [SY658: $i] :
                ( ~ ( in @ SY658 @ SV303 )
                | ( in @ SY658 @ SV414 )
                | ( in @ SY658 @ SV435 ) )
          | ~ ~ ( ~ ! [SY659: $i] :
                      ( ~ ( in @ SY659 @ SV435 )
                      | ( in @ SY659 @ SV303 ) )
                | ~ ! [SY660: $i] :
                      ( ~ ( in @ SY660 @ SV435 )
                      | ~ ( in @ SY660 @ SV414 ) ) ) )
        = $false )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1881]) ).

thf(1933,plain,
    ! [SV376: $i,SV417: $i] :
      ( ( ( in @ ( sK23_C @ SV417 @ SV376 ) @ SV376 )
        = $true )
      | ( ( disjoint @ SV376 @ SV417 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1883]) ).

thf(1934,plain,
    ! [SV376: $i,SV417: $i] :
      ( ( ( in @ ( sK23_C @ SV417 @ SV376 ) @ SV417 )
        = $true )
      | ( ( disjoint @ SV376 @ SV417 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1884]) ).

thf(1935,plain,
    ! [SV418: $i,SV377: $i,SV444: $i] :
      ( ( ( in @ SV444 @ SV377 )
        = $false )
      | ( ( ~ ( in @ SV444 @ SV418 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV377 @ SV418 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1885]) ).

thf(1936,plain,
    ! [SV378: $i,SV419: $i] :
      ( ( ( subset @ SV419 @ SV378 )
        = $false )
      | ( ( subset @ SV378 @ SV419 )
        = $false )
      | ( ( SV378 = SV419 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1886]) ).

thf(1937,plain,
    ! [SV453: $i,SV445: $i] :
      ( ( ( ( SV445 != SV453 ) )
        = $true )
      | ( ( subset @ SV445 @ SV453 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1887]) ).

thf(1938,plain,
    ! [SV454: $i,SV446: $i] :
      ( ( ( ( SV446 != SV454 ) )
        = $true )
      | ( ( subset @ SV454 @ SV446 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1888]) ).

thf(1939,plain,
    ! [SV379: $i,SV420: $i] :
      ( ( ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV379 )
        = $true )
      | ( ( subset @ SV379 @ SV420 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1889]) ).

thf(1940,plain,
    ! [SV379: $i,SV420: $i] :
      ( ( ( ~ ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV420 ) )
        = $true )
      | ( ( subset @ SV379 @ SV420 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1890]) ).

thf(1941,plain,
    ! [SV421: $i,SV380: $i,SV455: $i] :
      ( ( ( ~ ( in @ SV455 @ SV380 ) )
        = $true )
      | ( ( in @ SV455 @ SV421 )
        = $true )
      | ( ( subset @ SV380 @ SV421 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1891]) ).

thf(1942,plain,
    ! [SV295: $i,SV422: $i,SV384: $i] :
      ( ( ( in @ SV384 @ SV422 )
        = $false )
      | ( ( in @ SV295 @ SV422 )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV295 @ SV384 ) @ SV422 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1892]) ).

thf(1943,plain,
    ! [SV456: $i,SV447: $i,SV295: $i] :
      ( ( ( ~ ( subset @ ( unordered_pair @ SV295 @ SV447 ) @ SV456 ) )
        = $true )
      | ( ( in @ SV295 @ SV456 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1893]) ).

thf(1944,plain,
    ! [SV457: $i,SV448: $i,SV295: $i] :
      ( ( ( ~ ( subset @ ( unordered_pair @ SV295 @ SV448 ) @ SV457 ) )
        = $true )
      | ( ( in @ SV448 @ SV457 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1894]) ).

thf(1945,plain,
    ! [SV423: $i,SV393: $i,SV296: $i] :
      ( ( ( ! [SY640: $i,SY641: $i] :
              ( ~ ( in @ SY640 @ SV296 )
              | ~ ( in @ SY641 @ SV393 )
              | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
               != ( ordered_pair @ SY640 @ SY641 ) ) )
          | ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1895]) ).

thf(1946,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
                    | ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) )
              | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
               != ( ordered_pair @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) ) ) )
          | ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1896]) ).

thf(1947,plain,
    ! [SV424: $i,SV394: $i,SV296: $i] :
      ( ( ( ~ ! [SY642: $i] :
                ( ! [SY606: $i,SY607: $i] :
                    ( ~ ( in @ SY606 @ SV296 )
                    | ~ ( in @ SY607 @ SV394 )
                    | ( SY642
                     != ( ordered_pair @ SY606 @ SY607 ) ) )
                | ( in @ SY642 @ SV424 ) ) )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1897]) ).

thf(1948,plain,
    ! [SV296: $i,SV394: $i,SV424: $i] :
      ( ( ( ~ ! [SY645: $i] :
                ( ~ ( in @ SY645 @ SV424 )
                | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                          | ~ ( in @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
                    | ( SY645
                     != ( ordered_pair @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) ) ) ) ) )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1897]) ).

thf(1949,plain,
    ! [SV460: $i,SV436: $i] :
      ( ( ( subset @ SV436 @ ( singleton @ SV460 ) )
        = $true )
      | ( ( SV436 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1898]) ).

thf(1950,plain,
    ! [SV449: $i,SV437: $i] :
      ( ( ( SV437
          = ( singleton @ SV449 ) )
        = $false )
      | ( ( subset @ SV437 @ ( singleton @ SV449 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1899]) ).

thf(1951,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ( ( ( sK21_C @ SV396 @ SV361 )
           != SV361 ) )
        = $true )
      | ( ( ~ ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) )
        = $true )
      | ( ( SV396
          = ( singleton @ SV361 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1900]) ).

thf(1952,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ( ( sK21_C @ SV396 @ SV361 )
          = SV361 )
        = $true )
      | ( ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 )
        = $true )
      | ( ( SV396
          = ( singleton @ SV361 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1901]) ).

thf(1953,plain,
    ! [SV397: $i,SV362: $i] :
      ( ( ( ! [SY609: $i] :
              ( ( SY609 != SV362 )
              | ( in @ SY609 @ SV397 ) ) )
        = $true )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1902]) ).

thf(1954,plain,
    ! [SV362: $i,SV397: $i] :
      ( ( ( ! [SY610: $i] :
              ( ~ ( in @ SY610 @ SV397 )
              | ( SY610 = SV362 ) ) )
        = $true )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1903]) ).

thf(1955,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
          | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
          | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1904]) ).

thf(1956,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ( ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
                  | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
              | ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
                  | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) ) ) )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1905]) ).

thf(1957,plain,
    ! [SV426: $i,SV399: $i,SV297: $i] :
      ( ( ( ~ ! [SY646: $i] :
                ( ~ ( in @ SY646 @ SV297 )
                | ~ ( in @ SY646 @ SV399 )
                | ( in @ SY646 @ SV426 ) ) )
        = $false )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1906]) ).

thf(1958,plain,
    ! [SV399: $i,SV297: $i,SV426: $i] :
      ( ( ( ~ ~ ( ~ ! [SY647: $i] :
                      ( ~ ( in @ SY647 @ SV426 )
                      | ( in @ SY647 @ SV297 ) )
                | ~ ! [SY648: $i] :
                      ( ~ ( in @ SY648 @ SV426 )
                      | ( in @ SY648 @ SV399 ) ) ) )
        = $false )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1906]) ).

thf(1959,plain,
    ! [SV438: $i,SV340: $i,SV427: $i,SV299: $i] :
      ( ( ( in @ SV299 @ SV427 )
        = $false )
      | ( ( ~ ( in @ SV340 @ SV438 ) )
        = $true )
      | ( ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV427 @ SV438 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1908]) ).

thf(1960,plain,
    ! [SV458: $i,SV340: $i,SV299: $i] :
      ( ( ( ! [SY669: $i] :
              ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV458 @ SY669 ) ) )
        = $true )
      | ( ( in @ SV299 @ SV458 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1909]) ).

thf(1961,plain,
    ! [SV461: $i,SV459: $i,SV340: $i,SV299: $i] :
      ( ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV459 @ SV461 ) )
        | ( in @ SV340 @ SV461 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1910]) ).

thf(1962,plain,
    ! [SV450: $i,SV439: $i] :
      ( ( ( proper_subset @ SV439 @ SV450 )
        = $false )
      | ( ( ( SV439 != SV450 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1911]) ).

thf(1963,plain,
    ! [SV451: $i,SV440: $i] :
      ( ( ( proper_subset @ SV440 @ SV451 )
        = $false )
      | ( ( subset @ SV440 @ SV451 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1912]) ).

thf(1964,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                  | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                   != SV300 ) )
              | ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
                  | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
                   != SV403 ) ) ) )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1913]) ).

thf(1965,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
          | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
            = SV300 )
          | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
            = SV403 ) )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1914]) ).

thf(1966,plain,
    ! [SV404: $i,SV300: $i,SV429: $i] :
      ( ( ( ~ ! [SY650: $i] :
                ( ~ ( in @ SY650 @ SV429 )
                | ( SY650 = SV300 )
                | ( SY650 = SV404 ) ) )
        = $false )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1915]) ).

thf(1967,plain,
    ! [SV404: $i,SV429: $i,SV300: $i] :
      ( ( ( ~ ~ ( ~ ! [SY651: $i] :
                      ( ( SY651 != SV300 )
                      | ( in @ SY651 @ SV429 ) )
                | ~ ! [SY652: $i] :
                      ( ( SY652 != SV404 )
                      | ( in @ SY652 @ SV429 ) ) ) )
        = $false )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1915]) ).

thf(1968,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ( ~ ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 ) )
        = $true )
      | ( ( ~ ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) )
        = $true )
      | ( ( SV407
          = ( powerset @ SV368 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1917]) ).

thf(1969,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
        = $true )
      | ( ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 )
        = $true )
      | ( ( SV407
          = ( powerset @ SV368 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1918]) ).

thf(1970,plain,
    ! [SV369: $i,SV408: $i] :
      ( ( ( ! [SY622: $i] :
              ( ~ ( in @ SY622 @ SV408 )
              | ( subset @ SY622 @ SV369 ) ) )
        = $true )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1919]) ).

thf(1971,plain,
    ! [SV408: $i,SV369: $i] :
      ( ( ( ! [SY623: $i] :
              ( ~ ( subset @ SY623 @ SV369 )
              | ( in @ SY623 @ SV408 ) ) )
        = $true )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1920]) ).

thf(1972,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                  | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 ) )
              | ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
                  | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) ) )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1923]) ).

thf(1973,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
          | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 )
          | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1924]) ).

thf(1974,plain,
    ! [SV410: $i,SV302: $i,SV433: $i] :
      ( ( ( ~ ! [SY655: $i] :
                ( ~ ( in @ SY655 @ SV433 )
                | ( in @ SY655 @ SV302 )
                | ( in @ SY655 @ SV410 ) ) )
        = $false )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1925]) ).

thf(1975,plain,
    ! [SV410: $i,SV433: $i,SV302: $i] :
      ( ( ( ~ ~ ( ~ ! [SY656: $i] :
                      ( ~ ( in @ SY656 @ SV302 )
                      | ( in @ SY656 @ SV433 ) )
                | ~ ! [SY657: $i] :
                      ( ~ ( in @ SY657 @ SV410 )
                      | ( in @ SY657 @ SV433 ) ) ) )
        = $false )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1925]) ).

thf(1976,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ! [SY629: $i] :
              ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SY629 )
              | ~ ( in @ SY629 @ SV370 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1926]) ).

thf(1977,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ ( sK9_SY185 @ SV411 @ SV370 ) )
              | ~ ( in @ ( sK9_SY185 @ SV411 @ SV370 ) @ SV370 ) ) )
        = $true )
      | ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1927]) ).

thf(1978,plain,
    ! [SV412: $i,SV371: $i] :
      ( ( ( ! [SY630: $i] :
              ( ! [SY588: $i] :
                  ( ~ ( in @ SY630 @ SY588 )
                  | ~ ( in @ SY588 @ SV371 ) )
              | ( in @ SY630 @ SV412 ) ) )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1928]) ).

thf(1979,plain,
    ! [SV371: $i,SV412: $i] :
      ( ( ( ! [SY632: $i] :
              ( ~ ( in @ SY632 @ SV412 )
              | ~ ( ~ ( in @ SY632 @ ( sK7_D @ SY632 @ SV412 @ SV371 ) )
                  | ~ ( in @ ( sK7_D @ SY632 @ SV412 @ SV371 ) @ SV371 ) ) ) )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1929]) ).

thf(1980,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
          | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
          | ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1930]) ).

thf(1981,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( ~ ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
                  | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
              | ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
                  | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) ) ) )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1931]) ).

thf(1982,plain,
    ! [SV435: $i,SV414: $i,SV303: $i] :
      ( ( ( ~ ! [SY658: $i] :
                ( ~ ( in @ SY658 @ SV303 )
                | ( in @ SY658 @ SV414 )
                | ( in @ SY658 @ SV435 ) ) )
        = $false )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1932]) ).

thf(1983,plain,
    ! [SV414: $i,SV303: $i,SV435: $i] :
      ( ( ( ~ ~ ( ~ ! [SY659: $i] :
                      ( ~ ( in @ SY659 @ SV435 )
                      | ( in @ SY659 @ SV303 ) )
                | ~ ! [SY660: $i] :
                      ( ~ ( in @ SY660 @ SV435 )
                      | ~ ( in @ SY660 @ SV414 ) ) ) )
        = $false )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1932]) ).

thf(1984,plain,
    ! [SV377: $i,SV418: $i,SV444: $i] :
      ( ( ( in @ SV444 @ SV418 )
        = $false )
      | ( ( in @ SV444 @ SV377 )
        = $false )
      | ( ( ~ ( disjoint @ SV377 @ SV418 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1935]) ).

thf(1985,plain,
    ! [SV453: $i,SV445: $i] :
      ( ( ( SV445 = SV453 )
        = $false )
      | ( ( subset @ SV445 @ SV453 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1937]) ).

thf(1986,plain,
    ! [SV454: $i,SV446: $i] :
      ( ( ( SV446 = SV454 )
        = $false )
      | ( ( subset @ SV454 @ SV446 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1938]) ).

thf(1987,plain,
    ! [SV379: $i,SV420: $i] :
      ( ( ( in @ ( sK11_C @ SV420 @ SV379 ) @ SV420 )
        = $false )
      | ( ( subset @ SV379 @ SV420 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1940]) ).

thf(1988,plain,
    ! [SV421: $i,SV380: $i,SV455: $i] :
      ( ( ( in @ SV455 @ SV380 )
        = $false )
      | ( ( in @ SV455 @ SV421 )
        = $true )
      | ( ( subset @ SV380 @ SV421 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1941]) ).

thf(1989,plain,
    ! [SV456: $i,SV447: $i,SV295: $i] :
      ( ( ( subset @ ( unordered_pair @ SV295 @ SV447 ) @ SV456 )
        = $false )
      | ( ( in @ SV295 @ SV456 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1943]) ).

thf(1990,plain,
    ! [SV457: $i,SV448: $i,SV295: $i] :
      ( ( ( subset @ ( unordered_pair @ SV295 @ SV448 ) @ SV457 )
        = $false )
      | ( ( in @ SV448 @ SV457 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1944]) ).

thf(1991,plain,
    ! [SV423: $i,SV393: $i,SV296: $i] :
      ( ( ( ! [SY640: $i,SY641: $i] :
              ( ~ ( in @ SY640 @ SV296 )
              | ~ ( in @ SY641 @ SV393 )
              | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
               != ( ordered_pair @ SY640 @ SY641 ) ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1945]) ).

thf(1992,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
                    | ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) )
              | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
               != ( ordered_pair @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) ) ) ) )
        = $true )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1946]) ).

thf(1993,plain,
    ! [SV424: $i,SV394: $i,SV296: $i] :
      ( ( ( ! [SY642: $i] :
              ( ! [SY606: $i,SY607: $i] :
                  ( ~ ( in @ SY606 @ SV296 )
                  | ~ ( in @ SY607 @ SV394 )
                  | ( SY642
                   != ( ordered_pair @ SY606 @ SY607 ) ) )
              | ( in @ SY642 @ SV424 ) ) )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1947]) ).

thf(1994,plain,
    ! [SV296: $i,SV394: $i,SV424: $i] :
      ( ( ( ! [SY645: $i] :
              ( ~ ( in @ SY645 @ SV424 )
              | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                        | ~ ( in @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
                  | ( SY645
                   != ( ordered_pair @ ( sK12_E @ SY645 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SY645 @ SV424 @ SV394 @ SV296 ) ) ) ) ) )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1948]) ).

thf(1995,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ( ( sK21_C @ SV396 @ SV361 )
          = SV361 )
        = $false )
      | ( ( ~ ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 ) )
        = $true )
      | ( ( SV396
          = ( singleton @ SV361 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1951]) ).

thf(1996,plain,
    ! [SV397: $i,SV362: $i,SV462: $i] :
      ( ( ( ( SV462 != SV362 )
          | ( in @ SV462 @ SV397 ) )
        = $true )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1953]) ).

thf(1997,plain,
    ! [SV362: $i,SV397: $i,SV463: $i] :
      ( ( ( ~ ( in @ SV463 @ SV397 )
          | ( SV463 = SV362 ) )
        = $true )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1954]) ).

thf(1998,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
          | ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1955]) ).

thf(1999,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
              | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
          | ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
              | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) ) )
        = $false )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1956]) ).

thf(2000,plain,
    ! [SV426: $i,SV399: $i,SV297: $i] :
      ( ( ( ! [SY646: $i] :
              ( ~ ( in @ SY646 @ SV297 )
              | ~ ( in @ SY646 @ SV399 )
              | ( in @ SY646 @ SV426 ) ) )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1957]) ).

thf(2001,plain,
    ! [SV399: $i,SV297: $i,SV426: $i] :
      ( ( ( ~ ( ~ ! [SY647: $i] :
                    ( ~ ( in @ SY647 @ SV426 )
                    | ( in @ SY647 @ SV297 ) )
              | ~ ! [SY648: $i] :
                    ( ~ ( in @ SY648 @ SV426 )
                    | ( in @ SY648 @ SV399 ) ) ) )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1958]) ).

thf(2002,plain,
    ! [SV427: $i,SV299: $i,SV438: $i,SV340: $i] :
      ( ( ( in @ SV340 @ SV438 )
        = $false )
      | ( ( in @ SV299 @ SV427 )
        = $false )
      | ( ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV427 @ SV438 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1959]) ).

thf(2003,plain,
    ! [SV464: $i,SV458: $i,SV340: $i,SV299: $i] :
      ( ( ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV458 @ SV464 ) ) )
        = $true )
      | ( ( in @ SV299 @ SV458 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1960]) ).

thf(2004,plain,
    ! [SV461: $i,SV459: $i,SV340: $i,SV299: $i] :
      ( ( ( ~ ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV459 @ SV461 ) ) )
        = $true )
      | ( ( in @ SV340 @ SV461 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1961]) ).

thf(2005,plain,
    ! [SV450: $i,SV439: $i] :
      ( ( ( SV439 = SV450 )
        = $false )
      | ( ( proper_subset @ SV439 @ SV450 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1962]) ).

thf(2006,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
              | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
               != SV300 ) )
          | ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
              | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
               != SV403 ) ) )
        = $false )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1964]) ).

thf(2007,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
        = $true )
      | ( ( ( ( sK18_D @ SV428 @ SV403 @ SV300 )
            = SV300 )
          | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
            = SV403 ) )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1965]) ).

thf(2008,plain,
    ! [SV404: $i,SV300: $i,SV429: $i] :
      ( ( ( ! [SY650: $i] :
              ( ~ ( in @ SY650 @ SV429 )
              | ( SY650 = SV300 )
              | ( SY650 = SV404 ) ) )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1966]) ).

thf(2009,plain,
    ! [SV404: $i,SV429: $i,SV300: $i] :
      ( ( ( ~ ( ~ ! [SY651: $i] :
                    ( ( SY651 != SV300 )
                    | ( in @ SY651 @ SV429 ) )
              | ~ ! [SY652: $i] :
                    ( ( SY652 != SV404 )
                    | ( in @ SY652 @ SV429 ) ) ) )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1967]) ).

thf(2010,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
        = $false )
      | ( ( ~ ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 ) )
        = $true )
      | ( ( SV407
          = ( powerset @ SV368 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1968]) ).

thf(2011,plain,
    ! [SV369: $i,SV408: $i,SV465: $i] :
      ( ( ( ~ ( in @ SV465 @ SV408 )
          | ( subset @ SV465 @ SV369 ) )
        = $true )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1970]) ).

thf(2012,plain,
    ! [SV408: $i,SV369: $i,SV466: $i] :
      ( ( ( ~ ( subset @ SV466 @ SV369 )
          | ( in @ SV466 @ SV408 ) )
        = $true )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1971]) ).

thf(2013,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
              | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 ) )
          | ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
              | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) )
        = $false )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1972]) ).

thf(2014,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
        = $true )
      | ( ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 )
          | ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1973]) ).

thf(2015,plain,
    ! [SV410: $i,SV302: $i,SV433: $i] :
      ( ( ( ! [SY655: $i] :
              ( ~ ( in @ SY655 @ SV433 )
              | ( in @ SY655 @ SV302 )
              | ( in @ SY655 @ SV410 ) ) )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1974]) ).

thf(2016,plain,
    ! [SV410: $i,SV433: $i,SV302: $i] :
      ( ( ( ~ ( ~ ! [SY656: $i] :
                    ( ~ ( in @ SY656 @ SV302 )
                    | ( in @ SY656 @ SV433 ) )
              | ~ ! [SY657: $i] :
                    ( ~ ( in @ SY657 @ SV410 )
                    | ( in @ SY657 @ SV433 ) ) ) )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1975]) ).

thf(2017,plain,
    ! [SV467: $i,SV370: $i,SV411: $i] :
      ( ( ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV467 )
          | ~ ( in @ SV467 @ SV370 ) )
        = $true )
      | ( ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1976]) ).

thf(2018,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ ( sK9_SY185 @ SV411 @ SV370 ) )
          | ~ ( in @ ( sK9_SY185 @ SV411 @ SV370 ) @ SV370 ) )
        = $false )
      | ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1977]) ).

thf(2019,plain,
    ! [SV412: $i,SV371: $i,SV468: $i] :
      ( ( ( ! [SY671: $i] :
              ( ~ ( in @ SV468 @ SY671 )
              | ~ ( in @ SY671 @ SV371 ) )
          | ( in @ SV468 @ SV412 ) )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1978]) ).

thf(2020,plain,
    ! [SV371: $i,SV412: $i,SV469: $i] :
      ( ( ( ~ ( in @ SV469 @ SV412 )
          | ~ ( ~ ( in @ SV469 @ ( sK7_D @ SV469 @ SV412 @ SV371 ) )
              | ~ ( in @ ( sK7_D @ SV469 @ SV412 @ SV371 ) @ SV371 ) ) )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1979]) ).

thf(2021,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
          | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 ) )
        = $true )
      | ( ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1980]) ).

thf(2022,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
              | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
          | ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
              | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) ) )
        = $false )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1981]) ).

thf(2023,plain,
    ! [SV435: $i,SV414: $i,SV303: $i] :
      ( ( ( ! [SY658: $i] :
              ( ~ ( in @ SY658 @ SV303 )
              | ( in @ SY658 @ SV414 )
              | ( in @ SY658 @ SV435 ) ) )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1982]) ).

thf(2024,plain,
    ! [SV414: $i,SV303: $i,SV435: $i] :
      ( ( ( ~ ( ~ ! [SY659: $i] :
                    ( ~ ( in @ SY659 @ SV435 )
                    | ( in @ SY659 @ SV303 ) )
              | ~ ! [SY660: $i] :
                    ( ~ ( in @ SY660 @ SV435 )
                    | ~ ( in @ SY660 @ SV414 ) ) ) )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1983]) ).

thf(2025,plain,
    ! [SV444: $i,SV418: $i,SV377: $i] :
      ( ( ( disjoint @ SV377 @ SV418 )
        = $false )
      | ( ( in @ SV444 @ SV377 )
        = $false )
      | ( ( in @ SV444 @ SV418 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1984]) ).

thf(2026,plain,
    ! [SV423: $i,SV393: $i,SV296: $i,SV470: $i] :
      ( ( ( ! [SY672: $i] :
              ( ~ ( in @ SV470 @ SV296 )
              | ~ ( in @ SY672 @ SV393 )
              | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
               != ( ordered_pair @ SV470 @ SY672 ) ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1991]) ).

thf(2027,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
                | ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) )
          | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
           != ( ordered_pair @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) ) ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1992]) ).

thf(2028,plain,
    ! [SV424: $i,SV471: $i,SV394: $i,SV296: $i] :
      ( ( ( ! [SY673: $i,SY674: $i] :
              ( ~ ( in @ SY673 @ SV296 )
              | ~ ( in @ SY674 @ SV394 )
              | ( SV471
               != ( ordered_pair @ SY673 @ SY674 ) ) )
          | ( in @ SV471 @ SV424 ) )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1993]) ).

thf(2029,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( ~ ( in @ SV472 @ SV424 )
          | ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                    | ~ ( in @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
              | ( SV472
               != ( ordered_pair @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) ) ) ) )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1994]) ).

thf(2030,plain,
    ! [SV361: $i,SV396: $i] :
      ( ( ( in @ ( sK21_C @ SV396 @ SV361 ) @ SV396 )
        = $false )
      | ( ( ( sK21_C @ SV396 @ SV361 )
          = SV361 )
        = $false )
      | ( ( SV396
          = ( singleton @ SV361 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1995]) ).

thf(2031,plain,
    ! [SV397: $i,SV362: $i,SV462: $i] :
      ( ( ( ( SV462 != SV362 ) )
        = $true )
      | ( ( in @ SV462 @ SV397 )
        = $true )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1996]) ).

thf(2032,plain,
    ! [SV362: $i,SV397: $i,SV463: $i] :
      ( ( ( ~ ( in @ SV463 @ SV397 ) )
        = $true )
      | ( ( SV463 = SV362 )
        = $true )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1997]) ).

thf(2033,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1998]) ).

thf(2034,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
              | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) ) )
        = $false )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1999]) ).

thf(2035,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ~ ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
              | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) ) )
        = $false )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1999]) ).

thf(2036,plain,
    ! [SV426: $i,SV399: $i,SV297: $i,SV473: $i] :
      ( ( ( ~ ( in @ SV473 @ SV297 )
          | ~ ( in @ SV473 @ SV399 )
          | ( in @ SV473 @ SV426 ) )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2000]) ).

thf(2037,plain,
    ! [SV399: $i,SV297: $i,SV426: $i] :
      ( ( ( ~ ! [SY647: $i] :
                ( ~ ( in @ SY647 @ SV426 )
                | ( in @ SY647 @ SV297 ) )
          | ~ ! [SY648: $i] :
                ( ~ ( in @ SY648 @ SV426 )
                | ( in @ SY648 @ SV399 ) ) )
        = $false )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2001]) ).

thf(2038,plain,
    ! [SV464: $i,SV458: $i,SV340: $i,SV299: $i] :
      ( ( ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV458 @ SV464 ) )
        = $false )
      | ( ( in @ SV299 @ SV458 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2003]) ).

thf(2039,plain,
    ! [SV461: $i,SV459: $i,SV340: $i,SV299: $i] :
      ( ( ( in @ ( ordered_pair @ SV299 @ SV340 ) @ ( cartesian_product2 @ SV459 @ SV461 ) )
        = $false )
      | ( ( in @ SV340 @ SV461 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2004]) ).

thf(2040,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
              | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
               != SV300 ) ) )
        = $false )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2006]) ).

thf(2041,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
              | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
               != SV403 ) ) )
        = $false )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2006]) ).

thf(2042,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ( sK18_D @ SV428 @ SV403 @ SV300 )
          = SV300 )
        = $true )
      | ( ( ( sK18_D @ SV428 @ SV403 @ SV300 )
          = SV403 )
        = $true )
      | ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2007]) ).

thf(2043,plain,
    ! [SV404: $i,SV300: $i,SV429: $i,SV474: $i] :
      ( ( ( ~ ( in @ SV474 @ SV429 )
          | ( SV474 = SV300 )
          | ( SV474 = SV404 ) )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2008]) ).

thf(2044,plain,
    ! [SV404: $i,SV429: $i,SV300: $i] :
      ( ( ( ~ ! [SY651: $i] :
                ( ( SY651 != SV300 )
                | ( in @ SY651 @ SV429 ) )
          | ~ ! [SY652: $i] :
                ( ( SY652 != SV404 )
                | ( in @ SY652 @ SV429 ) ) )
        = $false )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2009]) ).

thf(2045,plain,
    ! [SV368: $i,SV407: $i] :
      ( ( ( subset @ ( sK19_C @ SV407 @ SV368 ) @ SV368 )
        = $false )
      | ( ( in @ ( sK19_C @ SV407 @ SV368 ) @ SV407 )
        = $false )
      | ( ( SV407
          = ( powerset @ SV368 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2010]) ).

thf(2046,plain,
    ! [SV369: $i,SV408: $i,SV465: $i] :
      ( ( ( ~ ( in @ SV465 @ SV408 ) )
        = $true )
      | ( ( subset @ SV465 @ SV369 )
        = $true )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2011]) ).

thf(2047,plain,
    ! [SV408: $i,SV369: $i,SV466: $i] :
      ( ( ( ~ ( subset @ SV466 @ SV369 ) )
        = $true )
      | ( ( in @ SV466 @ SV408 )
        = $true )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2012]) ).

thf(2048,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
              | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 ) ) )
        = $false )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2013]) ).

thf(2049,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
              | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) ) )
        = $false )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2013]) ).

thf(2050,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 )
        = $true )
      | ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 )
        = $true )
      | ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2014]) ).

thf(2051,plain,
    ! [SV410: $i,SV302: $i,SV433: $i,SV475: $i] :
      ( ( ( ~ ( in @ SV475 @ SV433 )
          | ( in @ SV475 @ SV302 )
          | ( in @ SV475 @ SV410 ) )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2015]) ).

thf(2052,plain,
    ! [SV410: $i,SV433: $i,SV302: $i] :
      ( ( ( ~ ! [SY656: $i] :
                ( ~ ( in @ SY656 @ SV302 )
                | ( in @ SY656 @ SV433 ) )
          | ~ ! [SY657: $i] :
                ( ~ ( in @ SY657 @ SV410 )
                | ( in @ SY657 @ SV433 ) ) )
        = $false )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2016]) ).

thf(2053,plain,
    ! [SV467: $i,SV370: $i,SV411: $i] :
      ( ( ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV467 ) )
        = $true )
      | ( ( ~ ( in @ SV467 @ SV370 ) )
        = $true )
      | ( ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2017]) ).

thf(2054,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ ( sK9_SY185 @ SV411 @ SV370 ) ) )
        = $false )
      | ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2018]) ).

thf(2055,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( ~ ( in @ ( sK9_SY185 @ SV411 @ SV370 ) @ SV370 ) )
        = $false )
      | ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2018]) ).

thf(2056,plain,
    ! [SV412: $i,SV371: $i,SV468: $i] :
      ( ( ( ! [SY671: $i] :
              ( ~ ( in @ SV468 @ SY671 )
              | ~ ( in @ SY671 @ SV371 ) ) )
        = $true )
      | ( ( in @ SV468 @ SV412 )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2019]) ).

thf(2057,plain,
    ! [SV371: $i,SV412: $i,SV469: $i] :
      ( ( ( ~ ( in @ SV469 @ SV412 ) )
        = $true )
      | ( ( ~ ( ~ ( in @ SV469 @ ( sK7_D @ SV469 @ SV412 @ SV371 ) )
              | ~ ( in @ ( sK7_D @ SV469 @ SV412 @ SV371 ) @ SV371 ) ) )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2020]) ).

thf(2058,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 ) )
        = $true )
      | ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
        = $true )
      | ( ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2021]) ).

thf(2059,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
              | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) ) )
        = $false )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2022]) ).

thf(2060,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
              | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) ) )
        = $false )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2022]) ).

thf(2061,plain,
    ! [SV435: $i,SV414: $i,SV303: $i,SV476: $i] :
      ( ( ( ~ ( in @ SV476 @ SV303 )
          | ( in @ SV476 @ SV414 )
          | ( in @ SV476 @ SV435 ) )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2023]) ).

thf(2062,plain,
    ! [SV414: $i,SV303: $i,SV435: $i] :
      ( ( ( ~ ! [SY659: $i] :
                ( ~ ( in @ SY659 @ SV435 )
                | ( in @ SY659 @ SV303 ) )
          | ~ ! [SY660: $i] :
                ( ~ ( in @ SY660 @ SV435 )
                | ~ ( in @ SY660 @ SV414 ) ) )
        = $false )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2024]) ).

thf(2063,plain,
    ! [SV423: $i,SV393: $i,SV477: $i,SV296: $i,SV470: $i] :
      ( ( ( ~ ( in @ SV470 @ SV296 )
          | ~ ( in @ SV477 @ SV393 )
          | ( ( sK14_D @ SV423 @ SV393 @ SV296 )
           != ( ordered_pair @ SV470 @ SV477 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[2026]) ).

thf(2064,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
                | ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2027]) ).

thf(2065,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ( ( sK14_D @ SV423 @ SV393 @ SV296 )
           != ( ordered_pair @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) ) ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2027]) ).

thf(2066,plain,
    ! [SV424: $i,SV471: $i,SV394: $i,SV296: $i] :
      ( ( ( ! [SY673: $i,SY674: $i] :
              ( ~ ( in @ SY673 @ SV296 )
              | ~ ( in @ SY674 @ SV394 )
              | ( SV471
               != ( ordered_pair @ SY673 @ SY674 ) ) ) )
        = $true )
      | ( ( in @ SV471 @ SV424 )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2028]) ).

thf(2067,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( ~ ( in @ SV472 @ SV424 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                    | ~ ( in @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
              | ( SV472
               != ( ordered_pair @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) ) ) ) )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2029]) ).

thf(2068,plain,
    ! [SV397: $i,SV362: $i,SV462: $i] :
      ( ( ( SV462 = SV362 )
        = $false )
      | ( ( in @ SV462 @ SV397 )
        = $true )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2031]) ).

thf(2069,plain,
    ! [SV362: $i,SV397: $i,SV463: $i] :
      ( ( ( in @ SV463 @ SV397 )
        = $false )
      | ( ( SV463 = SV362 )
        = $true )
      | ( ( SV397
          = ( singleton @ SV362 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2032]) ).

thf(2070,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
        = $false )
      | ( ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2033]) ).

thf(2071,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
          | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2034]) ).

thf(2072,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
          | ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2035]) ).

thf(2073,plain,
    ! [SV426: $i,SV399: $i,SV297: $i,SV473: $i] :
      ( ( ( ~ ( in @ SV473 @ SV297 )
          | ~ ( in @ SV473 @ SV399 ) )
        = $true )
      | ( ( in @ SV473 @ SV426 )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2036]) ).

thf(2074,plain,
    ! [SV399: $i,SV297: $i,SV426: $i] :
      ( ( ( ~ ! [SY647: $i] :
                ( ~ ( in @ SY647 @ SV426 )
                | ( in @ SY647 @ SV297 ) ) )
        = $false )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2037]) ).

thf(2075,plain,
    ! [SV297: $i,SV399: $i,SV426: $i] :
      ( ( ( ~ ! [SY648: $i] :
                ( ~ ( in @ SY648 @ SV426 )
                | ( in @ SY648 @ SV399 ) ) )
        = $false )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2037]) ).

thf(2076,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
          | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
           != SV300 ) )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2040]) ).

thf(2077,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
          | ( ( sK18_D @ SV428 @ SV403 @ SV300 )
           != SV403 ) )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2041]) ).

thf(2078,plain,
    ! [SV404: $i,SV300: $i,SV429: $i,SV474: $i] :
      ( ( ( ~ ( in @ SV474 @ SV429 ) )
        = $true )
      | ( ( ( SV474 = SV300 )
          | ( SV474 = SV404 ) )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2043]) ).

thf(2079,plain,
    ! [SV404: $i,SV429: $i,SV300: $i] :
      ( ( ( ~ ! [SY651: $i] :
                ( ( SY651 != SV300 )
                | ( in @ SY651 @ SV429 ) ) )
        = $false )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2044]) ).

thf(2080,plain,
    ! [SV300: $i,SV429: $i,SV404: $i] :
      ( ( ( ~ ! [SY652: $i] :
                ( ( SY652 != SV404 )
                | ( in @ SY652 @ SV429 ) ) )
        = $false )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2044]) ).

thf(2081,plain,
    ! [SV369: $i,SV408: $i,SV465: $i] :
      ( ( ( in @ SV465 @ SV408 )
        = $false )
      | ( ( subset @ SV465 @ SV369 )
        = $true )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2046]) ).

thf(2082,plain,
    ! [SV408: $i,SV369: $i,SV466: $i] :
      ( ( ( subset @ SV466 @ SV369 )
        = $false )
      | ( ( in @ SV466 @ SV408 )
        = $true )
      | ( ( SV408
          = ( powerset @ SV369 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2047]) ).

thf(2083,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
          | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 ) )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2048]) ).

thf(2084,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
          | ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2049]) ).

thf(2085,plain,
    ! [SV410: $i,SV302: $i,SV433: $i,SV475: $i] :
      ( ( ( ~ ( in @ SV475 @ SV433 ) )
        = $true )
      | ( ( ( in @ SV475 @ SV302 )
          | ( in @ SV475 @ SV410 ) )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2051]) ).

thf(2086,plain,
    ! [SV410: $i,SV433: $i,SV302: $i] :
      ( ( ( ~ ! [SY656: $i] :
                ( ~ ( in @ SY656 @ SV302 )
                | ( in @ SY656 @ SV433 ) ) )
        = $false )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2052]) ).

thf(2087,plain,
    ! [SV302: $i,SV433: $i,SV410: $i] :
      ( ( ( ~ ! [SY657: $i] :
                ( ~ ( in @ SY657 @ SV410 )
                | ( in @ SY657 @ SV433 ) ) )
        = $false )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2052]) ).

thf(2088,plain,
    ! [SV467: $i,SV370: $i,SV411: $i] :
      ( ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV467 )
        = $false )
      | ( ( ~ ( in @ SV467 @ SV370 ) )
        = $true )
      | ( ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2053]) ).

thf(2089,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ ( sK9_SY185 @ SV411 @ SV370 ) )
        = $true )
      | ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2054]) ).

thf(2090,plain,
    ! [SV370: $i,SV411: $i] :
      ( ( ( in @ ( sK9_SY185 @ SV411 @ SV370 ) @ SV370 )
        = $true )
      | ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2055]) ).

thf(2091,plain,
    ! [SV412: $i,SV371: $i,SV478: $i,SV468: $i] :
      ( ( ( ~ ( in @ SV468 @ SV478 )
          | ~ ( in @ SV478 @ SV371 ) )
        = $true )
      | ( ( in @ SV468 @ SV412 )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2056]) ).

thf(2092,plain,
    ! [SV371: $i,SV412: $i,SV469: $i] :
      ( ( ( in @ SV469 @ SV412 )
        = $false )
      | ( ( ~ ( ~ ( in @ SV469 @ ( sK7_D @ SV469 @ SV412 @ SV371 ) )
              | ~ ( in @ ( sK7_D @ SV469 @ SV412 @ SV371 ) @ SV371 ) ) )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2057]) ).

thf(2093,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
        = $false )
      | ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
        = $true )
      | ( ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2058]) ).

thf(2094,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
          | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2059]) ).

thf(2095,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
          | ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 ) )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2060]) ).

thf(2096,plain,
    ! [SV435: $i,SV414: $i,SV303: $i,SV476: $i] :
      ( ( ( ~ ( in @ SV476 @ SV303 )
          | ( in @ SV476 @ SV414 ) )
        = $true )
      | ( ( in @ SV476 @ SV435 )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2061]) ).

thf(2097,plain,
    ! [SV414: $i,SV303: $i,SV435: $i] :
      ( ( ( ~ ! [SY659: $i] :
                ( ~ ( in @ SY659 @ SV435 )
                | ( in @ SY659 @ SV303 ) ) )
        = $false )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2062]) ).

thf(2098,plain,
    ! [SV303: $i,SV414: $i,SV435: $i] :
      ( ( ( ~ ! [SY660: $i] :
                ( ~ ( in @ SY660 @ SV435 )
                | ~ ( in @ SY660 @ SV414 ) ) )
        = $false )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2062]) ).

thf(2099,plain,
    ! [SV423: $i,SV393: $i,SV477: $i,SV296: $i,SV470: $i] :
      ( ( ( ~ ( in @ SV470 @ SV296 )
          | ~ ( in @ SV477 @ SV393 ) )
        = $true )
      | ( ( ( ( sK14_D @ SV423 @ SV393 @ SV296 )
           != ( ordered_pair @ SV470 @ SV477 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2063]) ).

thf(2100,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
              | ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) ) )
        = $true )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2064]) ).

thf(2101,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ( sK14_D @ SV423 @ SV393 @ SV296 )
          = ( ordered_pair @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) ) )
        = $true )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2065]) ).

thf(2102,plain,
    ! [SV424: $i,SV471: $i,SV394: $i,SV296: $i,SV479: $i] :
      ( ( ( ! [SY675: $i] :
              ( ~ ( in @ SV479 @ SV296 )
              | ~ ( in @ SY675 @ SV394 )
              | ( SV471
               != ( ordered_pair @ SV479 @ SY675 ) ) ) )
        = $true )
      | ( ( in @ SV471 @ SV424 )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2066]) ).

thf(2103,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( ~ ( ~ ~ ( ~ ( in @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                    | ~ ( in @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
              | ( SV472
               != ( ordered_pair @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) ) ) ) )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2067]) ).

thf(2104,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
        = $false )
      | ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
        = $false )
      | ( ( ~ ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 ) )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2070]) ).

thf(2105,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
        = $true )
      | ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2071]) ).

thf(2106,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
        = $true )
      | ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 )
        = $true )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2072]) ).

thf(2107,plain,
    ! [SV426: $i,SV399: $i,SV297: $i,SV473: $i] :
      ( ( ( ~ ( in @ SV473 @ SV297 ) )
        = $true )
      | ( ( ~ ( in @ SV473 @ SV399 ) )
        = $true )
      | ( ( in @ SV473 @ SV426 )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2073]) ).

thf(2108,plain,
    ! [SV399: $i,SV297: $i,SV426: $i] :
      ( ( ( ! [SY647: $i] :
              ( ~ ( in @ SY647 @ SV426 )
              | ( in @ SY647 @ SV297 ) ) )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2074]) ).

thf(2109,plain,
    ! [SV297: $i,SV399: $i,SV426: $i] :
      ( ( ( ! [SY648: $i] :
              ( ~ ( in @ SY648 @ SV426 )
              | ( in @ SY648 @ SV399 ) ) )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2075]) ).

thf(2110,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 ) )
        = $true )
      | ( ( ( ( sK18_D @ SV428 @ SV403 @ SV300 )
           != SV300 ) )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2076]) ).

thf(2111,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ~ ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 ) )
        = $true )
      | ( ( ( ( sK18_D @ SV428 @ SV403 @ SV300 )
           != SV403 ) )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2077]) ).

thf(2112,plain,
    ! [SV404: $i,SV300: $i,SV429: $i,SV474: $i] :
      ( ( ( in @ SV474 @ SV429 )
        = $false )
      | ( ( ( SV474 = SV300 )
          | ( SV474 = SV404 ) )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2078]) ).

thf(2113,plain,
    ! [SV404: $i,SV429: $i,SV300: $i] :
      ( ( ( ! [SY651: $i] :
              ( ( SY651 != SV300 )
              | ( in @ SY651 @ SV429 ) ) )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2079]) ).

thf(2114,plain,
    ! [SV300: $i,SV429: $i,SV404: $i] :
      ( ( ( ! [SY652: $i] :
              ( ( SY652 != SV404 )
              | ( in @ SY652 @ SV429 ) ) )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2080]) ).

thf(2115,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 ) )
        = $true )
      | ( ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 ) )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2083]) ).

thf(2116,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 ) )
        = $true )
      | ( ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2084]) ).

thf(2117,plain,
    ! [SV410: $i,SV302: $i,SV433: $i,SV475: $i] :
      ( ( ( in @ SV475 @ SV433 )
        = $false )
      | ( ( ( in @ SV475 @ SV302 )
          | ( in @ SV475 @ SV410 ) )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2085]) ).

thf(2118,plain,
    ! [SV410: $i,SV433: $i,SV302: $i] :
      ( ( ( ! [SY656: $i] :
              ( ~ ( in @ SY656 @ SV302 )
              | ( in @ SY656 @ SV433 ) ) )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2086]) ).

thf(2119,plain,
    ! [SV302: $i,SV433: $i,SV410: $i] :
      ( ( ( ! [SY657: $i] :
              ( ~ ( in @ SY657 @ SV410 )
              | ( in @ SY657 @ SV433 ) ) )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2087]) ).

thf(2120,plain,
    ! [SV411: $i,SV370: $i,SV467: $i] :
      ( ( ( in @ SV467 @ SV370 )
        = $false )
      | ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV467 )
        = $false )
      | ( ( ~ ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 ) )
        = $true )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2088]) ).

thf(2121,plain,
    ! [SV412: $i,SV371: $i,SV478: $i,SV468: $i] :
      ( ( ( ~ ( in @ SV468 @ SV478 ) )
        = $true )
      | ( ( ~ ( in @ SV478 @ SV371 ) )
        = $true )
      | ( ( in @ SV468 @ SV412 )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2091]) ).

thf(2122,plain,
    ! [SV371: $i,SV412: $i,SV469: $i] :
      ( ( ( ~ ( in @ SV469 @ ( sK7_D @ SV469 @ SV412 @ SV371 ) )
          | ~ ( in @ ( sK7_D @ SV469 @ SV412 @ SV371 ) @ SV371 ) )
        = $false )
      | ( ( in @ SV469 @ SV412 )
        = $false )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2092]) ).

thf(2123,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 )
        = $false )
      | ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
        = $true )
      | ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
        = $false )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2093]) ).

thf(2124,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV303 )
        = $true )
      | ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2094]) ).

thf(2125,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 ) )
        = $true )
      | ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2095]) ).

thf(2126,plain,
    ! [SV435: $i,SV414: $i,SV303: $i,SV476: $i] :
      ( ( ( ~ ( in @ SV476 @ SV303 ) )
        = $true )
      | ( ( in @ SV476 @ SV414 )
        = $true )
      | ( ( in @ SV476 @ SV435 )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2096]) ).

thf(2127,plain,
    ! [SV414: $i,SV303: $i,SV435: $i] :
      ( ( ( ! [SY659: $i] :
              ( ~ ( in @ SY659 @ SV435 )
              | ( in @ SY659 @ SV303 ) ) )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2097]) ).

thf(2128,plain,
    ! [SV303: $i,SV414: $i,SV435: $i] :
      ( ( ( ! [SY660: $i] :
              ( ~ ( in @ SY660 @ SV435 )
              | ~ ( in @ SY660 @ SV414 ) ) )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2098]) ).

thf(2129,plain,
    ! [SV423: $i,SV393: $i,SV477: $i,SV296: $i,SV470: $i] :
      ( ( ( ~ ( in @ SV470 @ SV296 ) )
        = $true )
      | ( ( ~ ( in @ SV477 @ SV393 ) )
        = $true )
      | ( ( ( ( sK14_D @ SV423 @ SV393 @ SV296 )
           != ( ordered_pair @ SV470 @ SV477 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[2099]) ).

thf(2130,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
          | ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2100]) ).

thf(2131,plain,
    ! [SV424: $i,SV471: $i,SV394: $i,SV480: $i,SV296: $i,SV479: $i] :
      ( ( ( ~ ( in @ SV479 @ SV296 )
          | ~ ( in @ SV480 @ SV394 )
          | ( SV471
           != ( ordered_pair @ SV479 @ SV480 ) ) )
        = $true )
      | ( ( in @ SV471 @ SV424 )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2102]) ).

thf(2132,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                | ~ ( in @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
          | ( SV472
           != ( ordered_pair @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) ) ) )
        = $false )
      | ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2103]) ).

thf(2133,plain,
    ! [SV297: $i,SV398: $i,SV425: $i] :
      ( ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV425 )
        = $false )
      | ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV297 )
        = $false )
      | ( ( in @ ( sK10_D @ SV425 @ SV398 @ SV297 ) @ SV398 )
        = $false )
      | ( ( SV425
          = ( set_intersection2 @ SV297 @ SV398 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2104]) ).

thf(2134,plain,
    ! [SV426: $i,SV399: $i,SV297: $i,SV473: $i] :
      ( ( ( in @ SV473 @ SV297 )
        = $false )
      | ( ( ~ ( in @ SV473 @ SV399 ) )
        = $true )
      | ( ( in @ SV473 @ SV426 )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2107]) ).

thf(2135,plain,
    ! [SV399: $i,SV297: $i,SV426: $i,SV481: $i] :
      ( ( ( ~ ( in @ SV481 @ SV426 )
          | ( in @ SV481 @ SV297 ) )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2108]) ).

thf(2136,plain,
    ! [SV297: $i,SV399: $i,SV426: $i,SV482: $i] :
      ( ( ( ~ ( in @ SV482 @ SV426 )
          | ( in @ SV482 @ SV399 ) )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2109]) ).

thf(2137,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
        = $false )
      | ( ( ( ( sK18_D @ SV428 @ SV403 @ SV300 )
           != SV300 ) )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2110]) ).

thf(2138,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
        = $false )
      | ( ( ( ( sK18_D @ SV428 @ SV403 @ SV300 )
           != SV403 ) )
        = $true )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2111]) ).

thf(2139,plain,
    ! [SV429: $i,SV404: $i,SV300: $i,SV474: $i] :
      ( ( ( SV474 = SV300 )
        = $true )
      | ( ( SV474 = SV404 )
        = $true )
      | ( ( in @ SV474 @ SV429 )
        = $false )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2112]) ).

thf(2140,plain,
    ! [SV404: $i,SV429: $i,SV300: $i,SV483: $i] :
      ( ( ( ( SV483 != SV300 )
          | ( in @ SV483 @ SV429 ) )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2113]) ).

thf(2141,plain,
    ! [SV300: $i,SV429: $i,SV404: $i,SV484: $i] :
      ( ( ( ( SV484 != SV404 )
          | ( in @ SV484 @ SV429 ) )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2114]) ).

thf(2142,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
        = $false )
      | ( ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 ) )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2115]) ).

thf(2143,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
        = $false )
      | ( ( ~ ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 ) )
        = $true )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2116]) ).

thf(2144,plain,
    ! [SV433: $i,SV410: $i,SV302: $i,SV475: $i] :
      ( ( ( in @ SV475 @ SV302 )
        = $true )
      | ( ( in @ SV475 @ SV410 )
        = $true )
      | ( ( in @ SV475 @ SV433 )
        = $false )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2117]) ).

thf(2145,plain,
    ! [SV410: $i,SV433: $i,SV302: $i,SV485: $i] :
      ( ( ( ~ ( in @ SV485 @ SV302 )
          | ( in @ SV485 @ SV433 ) )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2118]) ).

thf(2146,plain,
    ! [SV302: $i,SV433: $i,SV410: $i,SV486: $i] :
      ( ( ( ~ ( in @ SV486 @ SV410 )
          | ( in @ SV486 @ SV433 ) )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2119]) ).

thf(2147,plain,
    ! [SV467: $i,SV370: $i,SV411: $i] :
      ( ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV411 )
        = $false )
      | ( ( in @ ( sK8_C @ SV411 @ SV370 ) @ SV467 )
        = $false )
      | ( ( in @ SV467 @ SV370 )
        = $false )
      | ( ( SV411
          = ( union @ SV370 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2120]) ).

thf(2148,plain,
    ! [SV412: $i,SV371: $i,SV478: $i,SV468: $i] :
      ( ( ( in @ SV468 @ SV478 )
        = $false )
      | ( ( ~ ( in @ SV478 @ SV371 ) )
        = $true )
      | ( ( in @ SV468 @ SV412 )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2121]) ).

thf(2149,plain,
    ! [SV371: $i,SV412: $i,SV469: $i] :
      ( ( ( ~ ( in @ SV469 @ ( sK7_D @ SV469 @ SV412 @ SV371 ) ) )
        = $false )
      | ( ( in @ SV469 @ SV412 )
        = $false )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2122]) ).

thf(2150,plain,
    ! [SV371: $i,SV412: $i,SV469: $i] :
      ( ( ( ~ ( in @ ( sK7_D @ SV469 @ SV412 @ SV371 ) @ SV371 ) )
        = $false )
      | ( ( in @ SV469 @ SV412 )
        = $false )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2122]) ).

thf(2151,plain,
    ! [SV303: $i,SV413: $i,SV434: $i] :
      ( ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV413 )
        = $false )
      | ( ( in @ ( sK6_D @ SV434 @ SV413 @ SV303 ) @ SV434 )
        = $true )
      | ( ( SV434
          = ( set_difference @ SV303 @ SV413 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2125]) ).

thf(2152,plain,
    ! [SV435: $i,SV414: $i,SV303: $i,SV476: $i] :
      ( ( ( in @ SV476 @ SV303 )
        = $false )
      | ( ( in @ SV476 @ SV414 )
        = $true )
      | ( ( in @ SV476 @ SV435 )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2126]) ).

thf(2153,plain,
    ! [SV414: $i,SV303: $i,SV435: $i,SV487: $i] :
      ( ( ( ~ ( in @ SV487 @ SV435 )
          | ( in @ SV487 @ SV303 ) )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2127]) ).

thf(2154,plain,
    ! [SV303: $i,SV414: $i,SV435: $i,SV488: $i] :
      ( ( ( ~ ( in @ SV488 @ SV435 )
          | ~ ( in @ SV488 @ SV414 ) )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[2128]) ).

thf(2155,plain,
    ! [SV423: $i,SV393: $i,SV477: $i,SV296: $i,SV470: $i] :
      ( ( ( in @ SV470 @ SV296 )
        = $false )
      | ( ( ~ ( in @ SV477 @ SV393 ) )
        = $true )
      | ( ( ( ( sK14_D @ SV423 @ SV393 @ SV296 )
           != ( ordered_pair @ SV470 @ SV477 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2129]) ).

thf(2156,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ~ ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2130]) ).

thf(2157,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ~ ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 ) )
        = $false )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[2130]) ).

thf(2158,plain,
    ! [SV424: $i,SV471: $i,SV394: $i,SV480: $i,SV296: $i,SV479: $i] :
      ( ( ( ~ ( in @ SV479 @ SV296 )
          | ~ ( in @ SV480 @ SV394 ) )
        = $true )
      | ( ( ( SV471
           != ( ordered_pair @ SV479 @ SV480 ) ) )
        = $true )
      | ( ( in @ SV471 @ SV424 )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2131]) ).

thf(2159,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( ~ ~ ( ~ ( in @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV296 )
                | ~ ( in @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV394 ) ) )
        = $false )
      | ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2132]) ).

thf(2160,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( ( SV472
           != ( ordered_pair @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) ) ) )
        = $false )
      | ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2132]) ).

thf(2161,plain,
    ! [SV426: $i,SV297: $i,SV399: $i,SV473: $i] :
      ( ( ( in @ SV473 @ SV399 )
        = $false )
      | ( ( in @ SV473 @ SV297 )
        = $false )
      | ( ( in @ SV473 @ SV426 )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2134]) ).

thf(2162,plain,
    ! [SV399: $i,SV297: $i,SV426: $i,SV481: $i] :
      ( ( ( ~ ( in @ SV481 @ SV426 ) )
        = $true )
      | ( ( in @ SV481 @ SV297 )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2135]) ).

thf(2163,plain,
    ! [SV297: $i,SV399: $i,SV426: $i,SV482: $i] :
      ( ( ( ~ ( in @ SV482 @ SV426 ) )
        = $true )
      | ( ( in @ SV482 @ SV399 )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2136]) ).

thf(2164,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ( sK18_D @ SV428 @ SV403 @ SV300 )
          = SV300 )
        = $false )
      | ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
        = $false )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2137]) ).

thf(2165,plain,
    ! [SV300: $i,SV403: $i,SV428: $i] :
      ( ( ( ( sK18_D @ SV428 @ SV403 @ SV300 )
          = SV403 )
        = $false )
      | ( ( in @ ( sK18_D @ SV428 @ SV403 @ SV300 ) @ SV428 )
        = $false )
      | ( ( SV428
          = ( unordered_pair @ SV300 @ SV403 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2138]) ).

thf(2166,plain,
    ! [SV404: $i,SV429: $i,SV300: $i,SV483: $i] :
      ( ( ( ( SV483 != SV300 ) )
        = $true )
      | ( ( in @ SV483 @ SV429 )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2140]) ).

thf(2167,plain,
    ! [SV300: $i,SV429: $i,SV404: $i,SV484: $i] :
      ( ( ( ( SV484 != SV404 ) )
        = $true )
      | ( ( in @ SV484 @ SV429 )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2141]) ).

thf(2168,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV302 )
        = $false )
      | ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
        = $false )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2142]) ).

thf(2169,plain,
    ! [SV302: $i,SV409: $i,SV432: $i] :
      ( ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV409 )
        = $false )
      | ( ( in @ ( sK17_D @ SV432 @ SV409 @ SV302 ) @ SV432 )
        = $false )
      | ( ( SV432
          = ( set_union2 @ SV302 @ SV409 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2143]) ).

thf(2170,plain,
    ! [SV410: $i,SV433: $i,SV302: $i,SV485: $i] :
      ( ( ( ~ ( in @ SV485 @ SV302 ) )
        = $true )
      | ( ( in @ SV485 @ SV433 )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2145]) ).

thf(2171,plain,
    ! [SV302: $i,SV433: $i,SV410: $i,SV486: $i] :
      ( ( ( ~ ( in @ SV486 @ SV410 ) )
        = $true )
      | ( ( in @ SV486 @ SV433 )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2146]) ).

thf(2172,plain,
    ! [SV412: $i,SV468: $i,SV371: $i,SV478: $i] :
      ( ( ( in @ SV478 @ SV371 )
        = $false )
      | ( ( in @ SV468 @ SV478 )
        = $false )
      | ( ( in @ SV468 @ SV412 )
        = $true )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2148]) ).

thf(2173,plain,
    ! [SV371: $i,SV412: $i,SV469: $i] :
      ( ( ( in @ SV469 @ ( sK7_D @ SV469 @ SV412 @ SV371 ) )
        = $true )
      | ( ( in @ SV469 @ SV412 )
        = $false )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2149]) ).

thf(2174,plain,
    ! [SV371: $i,SV412: $i,SV469: $i] :
      ( ( ( in @ ( sK7_D @ SV469 @ SV412 @ SV371 ) @ SV371 )
        = $true )
      | ( ( in @ SV469 @ SV412 )
        = $false )
      | ( ( SV412
          = ( union @ SV371 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2150]) ).

thf(2175,plain,
    ! [SV414: $i,SV303: $i,SV435: $i,SV487: $i] :
      ( ( ( ~ ( in @ SV487 @ SV435 ) )
        = $true )
      | ( ( in @ SV487 @ SV303 )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2153]) ).

thf(2176,plain,
    ! [SV303: $i,SV414: $i,SV435: $i,SV488: $i] :
      ( ( ( ~ ( in @ SV488 @ SV435 ) )
        = $true )
      | ( ( ~ ( in @ SV488 @ SV414 ) )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2154]) ).

thf(2177,plain,
    ! [SV423: $i,SV296: $i,SV470: $i,SV393: $i,SV477: $i] :
      ( ( ( in @ SV477 @ SV393 )
        = $false )
      | ( ( in @ SV470 @ SV296 )
        = $false )
      | ( ( ( ( sK14_D @ SV423 @ SV393 @ SV296 )
           != ( ordered_pair @ SV470 @ SV477 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2155]) ).

thf(2178,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( in @ ( sK15_SY189 @ SV423 @ SV393 @ SV296 ) @ SV296 )
        = $true )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2156]) ).

thf(2179,plain,
    ! [SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( in @ ( sK16_SY191 @ SV423 @ SV393 @ SV296 ) @ SV393 )
        = $true )
      | ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[2157]) ).

thf(2180,plain,
    ! [SV424: $i,SV471: $i,SV394: $i,SV480: $i,SV296: $i,SV479: $i] :
      ( ( ( ~ ( in @ SV479 @ SV296 ) )
        = $true )
      | ( ( ~ ( in @ SV480 @ SV394 ) )
        = $true )
      | ( ( ( SV471
           != ( ordered_pair @ SV479 @ SV480 ) ) )
        = $true )
      | ( ( in @ SV471 @ SV424 )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[2158]) ).

thf(2181,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV296 )
              | ~ ( in @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV394 ) ) )
        = $true )
      | ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2159]) ).

thf(2182,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( SV472
          = ( ordered_pair @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) ) )
        = $true )
      | ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2160]) ).

thf(2183,plain,
    ! [SV399: $i,SV297: $i,SV426: $i,SV481: $i] :
      ( ( ( in @ SV481 @ SV426 )
        = $false )
      | ( ( in @ SV481 @ SV297 )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2162]) ).

thf(2184,plain,
    ! [SV297: $i,SV399: $i,SV426: $i,SV482: $i] :
      ( ( ( in @ SV482 @ SV426 )
        = $false )
      | ( ( in @ SV482 @ SV399 )
        = $true )
      | ( ( SV426
          = ( set_intersection2 @ SV297 @ SV399 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2163]) ).

thf(2185,plain,
    ! [SV404: $i,SV429: $i,SV300: $i,SV483: $i] :
      ( ( ( SV483 = SV300 )
        = $false )
      | ( ( in @ SV483 @ SV429 )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2166]) ).

thf(2186,plain,
    ! [SV300: $i,SV429: $i,SV404: $i,SV484: $i] :
      ( ( ( SV484 = SV404 )
        = $false )
      | ( ( in @ SV484 @ SV429 )
        = $true )
      | ( ( SV429
          = ( unordered_pair @ SV300 @ SV404 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2167]) ).

thf(2187,plain,
    ! [SV410: $i,SV433: $i,SV302: $i,SV485: $i] :
      ( ( ( in @ SV485 @ SV302 )
        = $false )
      | ( ( in @ SV485 @ SV433 )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2170]) ).

thf(2188,plain,
    ! [SV302: $i,SV433: $i,SV410: $i,SV486: $i] :
      ( ( ( in @ SV486 @ SV410 )
        = $false )
      | ( ( in @ SV486 @ SV433 )
        = $true )
      | ( ( SV433
          = ( set_union2 @ SV302 @ SV410 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2171]) ).

thf(2189,plain,
    ! [SV414: $i,SV303: $i,SV435: $i,SV487: $i] :
      ( ( ( in @ SV487 @ SV435 )
        = $false )
      | ( ( in @ SV487 @ SV303 )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2175]) ).

thf(2190,plain,
    ! [SV303: $i,SV414: $i,SV435: $i,SV488: $i] :
      ( ( ( in @ SV488 @ SV435 )
        = $false )
      | ( ( ~ ( in @ SV488 @ SV414 ) )
        = $true )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2176]) ).

thf(2191,plain,
    ! [SV477: $i,SV470: $i,SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( ( sK14_D @ SV423 @ SV393 @ SV296 )
          = ( ordered_pair @ SV470 @ SV477 ) )
        = $false )
      | ( ( in @ SV470 @ SV296 )
        = $false )
      | ( ( in @ SV477 @ SV393 )
        = $false )
      | ( ( ~ ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 ) )
        = $true )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2177]) ).

thf(2192,plain,
    ! [SV424: $i,SV471: $i,SV394: $i,SV480: $i,SV296: $i,SV479: $i] :
      ( ( ( in @ SV479 @ SV296 )
        = $false )
      | ( ( ~ ( in @ SV480 @ SV394 ) )
        = $true )
      | ( ( ( SV471
           != ( ordered_pair @ SV479 @ SV480 ) ) )
        = $true )
      | ( ( in @ SV471 @ SV424 )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2180]) ).

thf(2193,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( ~ ( in @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV296 )
          | ~ ( in @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
        = $false )
      | ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2181]) ).

thf(2194,plain,
    ! [SV303: $i,SV435: $i,SV414: $i,SV488: $i] :
      ( ( ( in @ SV488 @ SV414 )
        = $false )
      | ( ( in @ SV488 @ SV435 )
        = $false )
      | ( ( SV435
          = ( set_difference @ SV303 @ SV414 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2190]) ).

thf(2195,plain,
    ! [SV470: $i,SV477: $i,SV296: $i,SV393: $i,SV423: $i] :
      ( ( ( in @ ( sK14_D @ SV423 @ SV393 @ SV296 ) @ SV423 )
        = $false )
      | ( ( in @ SV477 @ SV393 )
        = $false )
      | ( ( in @ SV470 @ SV296 )
        = $false )
      | ( ( ( sK14_D @ SV423 @ SV393 @ SV296 )
          = ( ordered_pair @ SV470 @ SV477 ) )
        = $false )
      | ( ( SV423
          = ( cartesian_product2 @ SV296 @ SV393 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[2191]) ).

thf(2196,plain,
    ! [SV424: $i,SV471: $i,SV296: $i,SV479: $i,SV394: $i,SV480: $i] :
      ( ( ( in @ SV480 @ SV394 )
        = $false )
      | ( ( in @ SV479 @ SV296 )
        = $false )
      | ( ( ( SV471
           != ( ordered_pair @ SV479 @ SV480 ) ) )
        = $true )
      | ( ( in @ SV471 @ SV424 )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2192]) ).

thf(2197,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( ~ ( in @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV296 ) )
        = $false )
      | ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2193]) ).

thf(2198,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( ~ ( in @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV394 ) )
        = $false )
      | ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[2193]) ).

thf(2199,plain,
    ! [SV424: $i,SV394: $i,SV296: $i,SV480: $i,SV479: $i,SV471: $i] :
      ( ( ( SV471
          = ( ordered_pair @ SV479 @ SV480 ) )
        = $false )
      | ( ( in @ SV479 @ SV296 )
        = $false )
      | ( ( in @ SV480 @ SV394 )
        = $false )
      | ( ( in @ SV471 @ SV424 )
        = $true )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[2196]) ).

thf(2200,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( in @ ( sK12_E @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV296 )
        = $true )
      | ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2197]) ).

thf(2201,plain,
    ! [SV296: $i,SV394: $i,SV424: $i,SV472: $i] :
      ( ( ( in @ ( sK13_SY186 @ SV472 @ SV424 @ SV394 @ SV296 ) @ SV394 )
        = $true )
      | ( ( in @ SV472 @ SV424 )
        = $false )
      | ( ( SV424
          = ( cartesian_product2 @ SV296 @ SV394 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[2198]) ).

thf(2202,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[1244,2201,2200,2199,2195,2194,2189,2188,2187,2186,2185,2184,2183,2182,2179,2178,2174,2173,2172,2169,2168,2165,2164,2161,2152,2151,2147,2144,2139,2133,2124,2123,2106,2105,2101,2090,2089,2082,2081,2069,2068,2050,2045,2042,2039,2038,2030,2025,2005,2002,1990,1989,1988,1987,1986,1985,1969,1963,1952,1950,1949,1942,1939,1936,1934,1933,1922,1921,1916,1907,1882,1864,1852,1839,1838,1823,1822,1815,1804,1803,1802,1801,1800,1799,1798,1797,1793,1792,1791,1790,1789,1767,1735,1729,1718,1674,1673,1672,1671,1670,1667,1666,1665,1660,1618,1617,1606,1605,1604,1598,1595,1593,1589,1587,1584,1532,1528,1518,1508,1458,1454,1453,1452,1451,1445,1441,1439,1437,1436,1430,1422,1392,1391,1390,1389,1387,1386,1384,1383,1368,1358,1306,1299,1298,1297,1296,1295,1294,1293,1292,1291,1290,1289]) ).

thf(2203,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[2202,1228]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.04/0.13  % Problem  : SEU160+2 : TPTP v8.1.0. Released v3.3.0.
% 0.04/0.14  % Command  : leo --timeout %d --proofoutput 1 --foatp e --atp e=./eprover %s
% 0.14/0.35  % Computer : n006.cluster.edu
% 0.14/0.35  % Model    : x86_64 x86_64
% 0.14/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.35  % Memory   : 8042.1875MB
% 0.14/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.35  % CPULimit : 300
% 0.14/0.35  % WCLimit  : 600
% 0.14/0.35  % DateTime : Sun Jun 19 02:18:55 EDT 2022
% 0.14/0.35  % CPUTime  : 
% 0.21/0.38  ..
% 0.21/0.40  
% 0.21/0.40   No.of.Axioms: 89
% 0.21/0.40  
% 0.21/0.40   Length.of.Defs: 0
% 0.21/0.40  
% 0.21/0.40   Contains.Choice.Funs: false
% 0.21/0.44  ..
% 0.21/0.45  (rf:0,axioms:89,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:600,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:91,loop_count:0,foatp_calls:0,translation:fof_full).............................................................................................................................................
% 1.03/1.27  
% 1.03/1.27  ********************************
% 1.03/1.27  *   All subproblems solved!    *
% 1.03/1.27  ********************************
% 1.03/1.27  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:0,axioms:89,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:74,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:2202,loop_count:0,foatp_calls:1,translation:fof_full)
% 2.24/2.40  
% 2.24/2.40  %**** Beginning of derivation protocol ****
% 2.24/2.40  % SZS output start CNFRefutation
% See solution above
% 2.24/2.41  
% 2.24/2.41  %**** End of derivation protocol ****
% 2.24/2.41  %**** no. of clauses in derivation: 2203 ****
% 2.24/2.41  %**** clause counter: 2202 ****
% 2.24/2.41  
% 2.24/2.41  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:0,axioms:89,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:74,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:2202,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------