TSTP Solution File: SEU174+2 by LEO-II---1.7.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : LEO-II---1.7.0
% Problem  : SEU174+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 12:07:37 EDT 2022

% Result   : Theorem 17.17s 17.35s
% Output   : CNFRefutation 17.99s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   26
%            Number of leaves      :  147
% Syntax   : Number of formulae    : 1554 ( 819 unt;  45 typ;   0 def)
%            Number of atoms       : 9993 (3534 equ;   0 cnn)
%            Maximal formula atoms :   11 (   6 avg)
%            Number of connectives : 21615 (3722   ~;3400   |; 251   &;14053   @)
%                                         (  70 <=>; 119  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   16 (   3 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   76 (  76   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   48 (  45 usr;   7 con; 0-3 aty)
%            Number of variables   : 4315 (   0   ^4295   !;  20   ?;4315   :)

% Comments : 
%------------------------------------------------------------------------------
thf(tp_are_equipotent,type,
    are_equipotent: $i > $i > $o ).

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

thf(tp_complements_of_subsets,type,
    complements_of_subsets: $i > $i > $i ).

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

thf(tp_element,type,
    element: $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_C,type,
    sK10_C: $i > $i > $i ).

thf(tp_sK11_SY246,type,
    sK11_SY246: $i > $i > $i ).

thf(tp_sK12_D,type,
    sK12_D: $i > $i > $i > $i ).

thf(tp_sK13_C,type,
    sK13_C: $i > $i > $i ).

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

thf(tp_sK15_D,type,
    sK15_D: $i > $i > $i > $i ).

thf(tp_sK16_C,type,
    sK16_C: $i > $i > $i ).

thf(tp_sK17_C,type,
    sK17_C: $i > $i > $i ).

thf(tp_sK18_C,type,
    sK18_C: $i > $i > $i ).

thf(tp_sK19_B,type,
    sK19_B: $i > $i ).

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

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

thf(tp_sK21_B,type,
    sK21_B: $i > $i ).

thf(tp_sK22_B,type,
    sK22_B: $i > $i ).

thf(tp_sK23_D,type,
    sK23_D: $i > $i > $i > $i ).

thf(tp_sK24_C,type,
    sK24_C: $i > $i > $i ).

thf(tp_sK25_B,type,
    sK25_B: $i > $i ).

thf(tp_sK26_C,type,
    sK26_C: $i > $i > $i ).

thf(tp_sK2_SY237,type,
    sK2_SY237: $i ).

thf(tp_sK3_B,type,
    sK3_B: $i > $i ).

thf(tp_sK4_SY240,type,
    sK4_SY240: $i > $i > $i ).

thf(tp_sK5_C,type,
    sK5_C: $i > $i > $i ).

thf(tp_sK6_A,type,
    sK6_A: $i ).

thf(tp_sK7_A,type,
    sK7_A: $i ).

thf(tp_sK8_D,type,
    sK8_D: $i > $i > $i > $i ).

thf(tp_sK9_D,type,
    sK9_D: $i > $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_subset_complement,type,
    subset_complement: $i > $i > $i ).

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

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

thf(1,axiom,
    ! [A: $i] :
    ? [B: $i] :
      ( ( in @ A @ B )
      & ! [C: $i,D: $i] :
          ( ( ( in @ C @ B )
            & ( subset @ D @ C ) )
         => ( in @ D @ B ) )
      & ! [C: $i] :
          ~ ( ( in @ C @ B )
            & ! [D: $i] :
                ~ ( ( in @ D @ B )
                  & ! [E: $i] :
                      ( ( subset @ E @ C )
                     => ( in @ E @ D ) ) ) )
      & ! [C: $i] :
          ~ ( ( subset @ C @ B )
            & ~ ( are_equipotent @ C @ B )
            & ~ ( in @ C @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t9_tarski) ).

thf(2,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( empty @ A )
        & ( A != B )
        & ( empty @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t8_boole) ).

thf(3,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( in @ A @ B )
        & ( empty @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t7_boole) ).

thf(4,axiom,
    ! [A: $i] :
      ( ( empty @ A )
     => ( A = empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t6_boole) ).

thf(5,axiom,
    ! [A: $i,B: $i,C: $i] :
      ~ ( ( in @ A @ B )
        & ( element @ B @ ( powerset @ C ) )
        & ( empty @ C ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t5_subset) ).

thf(6,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( in @ A @ B )
        & ( element @ B @ ( powerset @ C ) ) )
     => ( element @ A @ C ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t4_subset) ).

thf(7,axiom,
    ! [A: $i] :
      ( ( set_difference @ empty_set @ A )
      = empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t4_boole) ).

thf(8,axiom,
    ! [A: $i,B: $i] :
      ( ( element @ A @ ( powerset @ B ) )
    <=> ( subset @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t3_subset) ).

thf(9,axiom,
    ! [A: $i] :
      ( ( set_difference @ A @ empty_set )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t3_boole) ).

thf(10,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(11,axiom,
    ! [A: $i,B: $i] :
      ( ( element @ A @ B )
     => ( ( empty @ B )
        | ( in @ A @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t2_subset) ).

thf(12,axiom,
    ! [A: $i] :
      ( ( set_intersection2 @ A @ empty_set )
      = empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t2_boole) ).

thf(13,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ( element @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t1_subset) ).

thf(14,axiom,
    ! [A: $i] :
      ( ( set_union2 @ A @ empty_set )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t1_boole) ).

thf(15,axiom,
    ! [A: $i,B: $i] :
      ( ( disjoint @ A @ B )
     => ( disjoint @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',symmetry_r1_xboole_0) ).

thf(16,axiom,
    ! [A: $i,B: $i] : ( subset @ A @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',reflexivity_r1_tarski) ).

thf(17,axiom,
    ? [A: $i] :
      ~ ( empty @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rc2_xboole_0) ).

thf(18,axiom,
    ! [A: $i] :
    ? [B: $i] :
      ( ( element @ B @ ( powerset @ A ) )
      & ( empty @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rc2_subset_1) ).

thf(19,axiom,
    ? [A: $i] : ( empty @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rc1_xboole_0) ).

thf(20,axiom,
    ! [A: $i] :
      ( ~ ( empty @ A )
     => ? [B: $i] :
          ( ( element @ B @ ( powerset @ A ) )
          & ~ ( empty @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rc1_subset_1) ).

thf(22,axiom,
    ! [A: $i,B: $i] :
      ( ( element @ B @ ( powerset @ ( powerset @ A ) ) )
     => ( ( complements_of_subsets @ A @ ( complements_of_subsets @ A @ B ) )
        = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',involutiveness_k7_setfam_1) ).

thf(23,axiom,
    ! [A: $i,B: $i] :
      ( ( element @ B @ ( powerset @ A ) )
     => ( ( subset_complement @ A @ ( subset_complement @ A @ B ) )
        = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',involutiveness_k3_subset_1) ).

thf(24,axiom,
    ! [A: $i,B: $i] :
      ( ( set_intersection2 @ A @ A )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',idempotence_k3_xboole_0) ).

thf(25,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ A )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',idempotence_k2_xboole_0) ).

thf(26,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ B @ A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc3_xboole_0) ).

thf(27,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ A @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc2_xboole_0) ).

thf(28,axiom,
    ! [A: $i,B: $i] :
      ~ ( empty @ ( ordered_pair @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc1_zfmisc_1) ).

thf(29,axiom,
    empty @ empty_set,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc1_xboole_0) ).

thf(30,axiom,
    ! [A: $i] :
      ~ ( empty @ ( powerset @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc1_subset_1) ).

thf(31,axiom,
    ! [A: $i] :
    ? [B: $i] : ( element @ B @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',existence_m1_subset_1) ).

thf(33,axiom,
    ! [A: $i,B: $i] :
      ( ( element @ B @ ( powerset @ ( powerset @ A ) ) )
     => ( element @ ( complements_of_subsets @ A @ B ) @ ( powerset @ ( powerset @ A ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k7_setfam_1) ).

thf(38,axiom,
    ! [A: $i,B: $i] :
      ( ( element @ B @ ( powerset @ A ) )
     => ( element @ ( subset_complement @ A @ B ) @ ( powerset @ A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',dt_k3_subset_1) ).

thf(45,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(46,axiom,
    ! [A: $i,B: $i] :
      ( ( element @ B @ ( powerset @ ( powerset @ A ) ) )
     => ! [C: $i] :
          ( ( element @ C @ ( powerset @ ( powerset @ A ) ) )
         => ( ( C
              = ( complements_of_subsets @ A @ B ) )
          <=> ! [D: $i] :
                ( ( element @ D @ ( powerset @ A ) )
               => ( ( in @ D @ C )
                <=> ( in @ ( subset_complement @ A @ D ) @ B ) ) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d8_setfam_1) ).

thf(47,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(49,axiom,
    ! [A: $i,B: $i] :
      ( ( element @ B @ ( powerset @ A ) )
     => ( ( subset_complement @ A @ B )
        = ( set_difference @ A @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d5_subset_1) ).

thf(50,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(51,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(52,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(53,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(55,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(56,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(57,axiom,
    ! [A: $i,B: $i] :
      ( ( ~ ( empty @ A )
       => ( ( element @ B @ A )
        <=> ( in @ B @ A ) ) )
      & ( ( empty @ A )
       => ( ( element @ B @ A )
        <=> ( empty @ B ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d2_subset_1) ).

thf(58,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(59,axiom,
    ! [A: $i] :
      ( ( A = empty_set )
    <=> ! [B: $i] :
          ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d1_xboole_0) ).

thf(60,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(61,axiom,
    ! [A: $i,B: $i] :
      ( ( A = B )
    <=> ( ( subset @ A @ B )
        & ( subset @ B @ A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d10_xboole_0) ).

thf(62,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(63,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(66,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',antisymmetry_r2_hidden) ).

thf(67,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(68,axiom,
    ! [A: $i] :
      ( ( union @ ( powerset @ A ) )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t99_zfmisc_1) ).

thf(69,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ( subset @ A @ ( union @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t92_zfmisc_1) ).

thf(70,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(71,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(72,axiom,
    ! [A: $i,B: $i] :
      ( ( disjoint @ A @ B )
    <=> ( ( set_difference @ A @ B )
        = A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t83_xboole_1) ).

thf(73,axiom,
    ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t7_xboole_1) ).

thf(74,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
     => ( A = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t6_zfmisc_1) ).

thf(75,axiom,
    ! [A: $i] :
      ( ( unordered_pair @ A @ A )
      = ( singleton @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t69_enumset1) ).

thf(76,axiom,
    ! [A: $i,B: $i] :
      ( ( ( set_difference @ A @ ( singleton @ B ) )
        = A )
    <=> ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t65_zfmisc_1) ).

thf(77,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(78,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( subset @ A @ B )
        & ( proper_subset @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t60_xboole_1) ).

thf(79,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( element @ C @ ( powerset @ A ) )
     => ~ ( ( in @ B @ ( subset_complement @ A @ C ) )
          & ( in @ B @ C ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t54_subset_1) ).

thf(80,axiom,
    ! [A: $i] :
      ( ( A != empty_set )
     => ! [B: $i] :
          ( ( element @ B @ ( powerset @ A ) )
         => ! [C: $i] :
              ( ( element @ C @ A )
             => ( ~ ( in @ C @ B )
               => ( in @ C @ ( subset_complement @ A @ B ) ) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t50_subset_1) ).

thf(81,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(82,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(83,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ( ( set_union2 @ ( singleton @ A ) @ B )
        = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t46_zfmisc_1) ).

thf(84,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(85,axiom,
    ! [A: $i,B: $i] :
      ( ( element @ B @ ( powerset @ A ) )
     => ! [C: $i] :
          ( ( element @ C @ ( powerset @ A ) )
         => ( ( disjoint @ B @ C )
          <=> ( subset @ B @ ( subset_complement @ A @ C ) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t43_subset_1) ).

thf(86,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(87,axiom,
    ! [A: $i] :
      ( ( subset @ A @ empty_set )
     => ( A = empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t3_xboole_1) ).

thf(88,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(89,axiom,
    ! [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(90,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(91,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(92,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ ( singleton @ A ) @ B )
    <=> ( in @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t37_zfmisc_1) ).

thf(93,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(94,axiom,
    ! [A: $i,B: $i] : ( subset @ ( set_difference @ A @ B ) @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t36_xboole_1) ).

thf(96,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(97,axiom,
    ! [A: $i] : ( subset @ empty_set @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t2_xboole_1) ).

thf(98,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ B )
     => ( ( set_intersection2 @ A @ B )
        = A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t28_xboole_1) ).

thf(99,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(100,axiom,
    ( ( powerset @ empty_set )
    = ( singleton @ empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t1_zfmisc_1) ).

thf(101,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(102,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(103,axiom,
    ! [A: $i,B: $i] : ( subset @ ( set_intersection2 @ A @ B ) @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t17_xboole_1) ).

thf(104,axiom,
    ! [A: $i] :
    ? [B: $i] :
      ( ( in @ A @ B )
      & ! [C: $i,D: $i] :
          ( ( ( in @ C @ B )
            & ( subset @ D @ C ) )
         => ( in @ D @ B ) )
      & ! [C: $i] :
          ( ( in @ C @ B )
         => ( in @ ( powerset @ C ) @ B ) )
      & ! [C: $i] :
          ~ ( ( subset @ C @ B )
            & ~ ( are_equipotent @ C @ B )
            & ~ ( in @ C @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t136_zfmisc_1) ).

thf(105,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ A @ B )
     => ( ( set_union2 @ A @ B )
        = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t12_xboole_1) ).

thf(106,axiom,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( ( subset @ A @ B )
        & ( subset @ C @ D ) )
     => ( subset @ ( cartesian_product2 @ A @ C ) @ ( cartesian_product2 @ B @ D ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t119_zfmisc_1) ).

thf(107,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( subset @ A @ B )
     => ( ( subset @ ( cartesian_product2 @ A @ C ) @ ( cartesian_product2 @ B @ C ) )
        & ( subset @ ( cartesian_product2 @ C @ A ) @ ( cartesian_product2 @ C @ B ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t118_zfmisc_1) ).

thf(110,axiom,
    ! [A: $i,B: $i] :
      ( ! [C: $i] :
          ( ( in @ C @ A )
         => ( in @ C @ B ) )
     => ( element @ A @ ( powerset @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l71_subset_1) ).

thf(112,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ( subset @ A @ ( union @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l50_zfmisc_1) ).

thf(113,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(114,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(115,axiom,
    ! [A: $i,B: $i] :
      ( ( element @ B @ ( powerset @ A ) )
     => ! [C: $i] :
          ( ( in @ C @ B )
         => ( in @ C @ A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l3_subset_1) ).

thf(116,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(117,axiom,
    ! [A: $i,B: $i] :
      ( ( subset @ ( singleton @ A ) @ B )
    <=> ( in @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l2_zfmisc_1) ).

thf(118,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( in @ A @ B )
     => ( disjoint @ ( singleton @ A ) @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l28_zfmisc_1) ).

thf(119,axiom,
    ! [A: $i,B: $i] :
      ~ ( ( disjoint @ ( singleton @ A ) @ B )
        & ( in @ A @ B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l25_zfmisc_1) ).

thf(120,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(121,axiom,
    ! [A: $i] :
      ( ( singleton @ A )
     != empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',l1_zfmisc_1) ).

thf(122,conjecture,
    ! [A: $i,B: $i] :
      ( ( element @ B @ ( powerset @ ( powerset @ A ) ) )
     => ~ ( ( B != empty_set )
          & ( ( complements_of_subsets @ A @ B )
            = empty_set ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t46_setfam_1) ).

thf(123,negated_conjecture,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ B @ ( powerset @ ( powerset @ A ) ) )
         => ~ ( ( B != empty_set )
              & ( ( complements_of_subsets @ A @ B )
                = empty_set ) ) ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[122]) ).

thf(124,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ B @ ( powerset @ ( powerset @ A ) ) )
         => ~ ( ( B != empty_set )
              & ( ( complements_of_subsets @ A @ B )
                = empty_set ) ) ) )
    = $false ),
    inference(unfold_def,[status(thm)],[123]) ).

thf(125,plain,
    ( ( ! [A: $i] :
        ? [B: $i] :
          ( ( in @ A @ B )
          & ! [C: $i,D: $i] :
              ( ( ( in @ C @ B )
                & ( subset @ D @ C ) )
             => ( in @ D @ B ) )
          & ! [C: $i] :
              ~ ( ( in @ C @ B )
                & ! [D: $i] :
                    ~ ( ( in @ D @ B )
                      & ! [E: $i] :
                          ( ( subset @ E @ C )
                         => ( in @ E @ D ) ) ) )
          & ! [C: $i] :
              ~ ( ( subset @ C @ B )
                & ~ ( are_equipotent @ C @ B )
                & ~ ( in @ C @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1]) ).

thf(126,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( empty @ A )
            & ( A != B )
            & ( empty @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[2]) ).

thf(127,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( in @ A @ B )
            & ( empty @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[3]) ).

thf(128,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ( in @ C @ A )
            <=> ( in @ C @ B ) )
         => ( A = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[10]) ).

thf(129,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
         => ( disjoint @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[15]) ).

thf(130,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[16]) ).

thf(131,plain,
    ( ( ? [A: $i] :
          ~ ( empty @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[17]) ).

thf(132,plain,
    ( ( ? [A: $i] : ( empty @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[19]) ).

thf(133,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_intersection2 @ A @ A )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[24]) ).

thf(134,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[25]) ).

thf(135,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[26]) ).

thf(136,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[27]) ).

thf(137,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( empty @ ( ordered_pair @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[28]) ).

thf(138,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( proper_subset @ A @ B )
        <=> ( ( subset @ A @ B )
            & ( A != B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[45]) ).

thf(139,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)],[50]) ).

thf(140,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)],[51]) ).

thf(141,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)],[52]) ).

thf(142,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
        <=> ! [C: $i] :
              ( ( in @ C @ A )
             => ( in @ C @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[53]) ).

thf(143,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)],[55]) ).

thf(144,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)],[56]) ).

thf(145,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( singleton @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ( C = A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[60]) ).

thf(146,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
        <=> ( ( subset @ A @ B )
            & ( subset @ B @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[61]) ).

thf(147,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_intersection2 @ A @ B )
          = ( set_intersection2 @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[62]) ).

thf(148,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[63]) ).

thf(149,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[66]) ).

thf(150,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
            = ( unordered_pair @ B @ C ) )
         => ( B = C ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[67]) ).

thf(151,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( subset @ A @ ( union @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[69]) ).

thf(152,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
            = ( unordered_pair @ B @ C ) )
         => ( A = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[70]) ).

thf(153,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)],[71]) ).

thf(154,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
        <=> ( ( set_difference @ A @ B )
            = A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[72]) ).

thf(155,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[73]) ).

thf(156,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
         => ( A = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[74]) ).

thf(157,plain,
    ( ( ! [A: $i] :
          ( ( unordered_pair @ A @ A )
          = ( singleton @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[75]) ).

thf(158,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ ( singleton @ B ) )
            = A )
        <=> ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[76]) ).

thf(159,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( disjoint @ B @ C ) )
         => ( disjoint @ A @ C ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[77]) ).

thf(160,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( subset @ A @ B )
            & ( proper_subset @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[78]) ).

thf(161,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)],[81]) ).

thf(162,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ A @ ( set_difference @ A @ B ) )
          = ( set_intersection2 @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[82]) ).

thf(163,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[83]) ).

thf(164,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
         => ( B
            = ( set_union2 @ A @ ( set_difference @ B @ A ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[84]) ).

thf(165,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ B @ ( powerset @ A ) )
         => ! [C: $i] :
              ( ( element @ C @ ( powerset @ A ) )
             => ( ( disjoint @ B @ C )
              <=> ( subset @ B @ ( subset_complement @ A @ C ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[85]) ).

thf(166,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ ( set_union2 @ A @ B ) @ B )
          = ( set_difference @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[86]) ).

thf(167,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)],[88]) ).

thf(168,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ ( set_difference @ B @ A ) )
          = ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[90]) ).

thf(169,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)],[91]) ).

thf(170,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ B )
        <=> ( in @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[92]) ).

thf(171,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ ( set_difference @ A @ B ) @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[94]) ).

thf(172,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)],[96]) ).

thf(173,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
         => ( ( set_intersection2 @ A @ B )
            = A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[98]) ).

thf(174,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)],[99]) ).

thf(175,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ B @ C ) )
         => ( subset @ A @ C ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[101]) ).

thf(176,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)],[102]) ).

thf(177,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ ( set_intersection2 @ A @ B ) @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[103]) ).

thf(178,plain,
    ( ( ! [A: $i] :
        ? [B: $i] :
          ( ( in @ A @ B )
          & ! [C: $i,D: $i] :
              ( ( ( in @ C @ B )
                & ( subset @ D @ C ) )
             => ( in @ D @ B ) )
          & ! [C: $i] :
              ( ( in @ C @ B )
             => ( in @ ( powerset @ C ) @ B ) )
          & ! [C: $i] :
              ~ ( ( subset @ C @ B )
                & ~ ( are_equipotent @ C @ B )
                & ~ ( in @ C @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[104]) ).

thf(179,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ B )
         => ( ( set_union2 @ A @ B )
            = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[105]) ).

thf(180,plain,
    ( ( ! [A: $i,B: $i,C: $i,D: $i] :
          ( ( ( subset @ A @ B )
            & ( subset @ C @ D ) )
         => ( subset @ ( cartesian_product2 @ A @ C ) @ ( cartesian_product2 @ B @ D ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[106]) ).

thf(181,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( subset @ A @ B )
         => ( ( subset @ ( cartesian_product2 @ A @ C ) @ ( cartesian_product2 @ B @ C ) )
            & ( subset @ ( cartesian_product2 @ C @ A ) @ ( cartesian_product2 @ C @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[107]) ).

thf(182,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( subset @ A @ ( union @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[112]) ).

thf(183,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)],[114]) ).

thf(184,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ ( singleton @ A ) @ B )
        <=> ( in @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[117]) ).

thf(185,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
         => ( disjoint @ ( singleton @ A ) @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[118]) ).

thf(186,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( ( disjoint @ ( singleton @ A ) @ B )
            & ( in @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[119]) ).

thf(187,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[120]) ).

thf(188,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
         => ( A = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[4]) ).

thf(189,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ~ ( ( in @ A @ B )
            & ( element @ B @ ( powerset @ C ) )
            & ( empty @ C ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[5]) ).

thf(190,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( in @ A @ B )
            & ( element @ B @ ( powerset @ C ) ) )
         => ( element @ A @ C ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[6]) ).

thf(191,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ empty_set @ A )
          = empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[7]) ).

thf(192,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ A @ ( powerset @ B ) )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[8]) ).

thf(193,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ A @ empty_set )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[9]) ).

thf(194,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ A @ B )
         => ( ( empty @ B )
            | ( in @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[11]) ).

thf(195,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ empty_set )
          = empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[12]) ).

thf(196,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ( element @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[13]) ).

thf(197,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[14]) ).

thf(198,plain,
    ( ( ! [A: $i] :
        ? [B: $i] :
          ( ( element @ B @ ( powerset @ A ) )
          & ( empty @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[18]) ).

thf(199,plain,
    ( ( ! [A: $i] :
          ( ~ ( empty @ A )
         => ? [B: $i] :
              ( ( element @ B @ ( powerset @ A ) )
              & ~ ( empty @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[20]) ).

thf(200,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ B @ ( powerset @ ( powerset @ A ) ) )
         => ( ( complements_of_subsets @ A @ ( complements_of_subsets @ A @ B ) )
            = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[22]) ).

thf(201,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ B @ ( powerset @ A ) )
         => ( ( subset_complement @ A @ ( subset_complement @ A @ B ) )
            = B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[23]) ).

thf(202,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(unfold_def,[status(thm)],[29]) ).

thf(203,plain,
    ( ( ! [A: $i] :
          ~ ( empty @ ( powerset @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[30]) ).

thf(204,plain,
    ( ( ! [A: $i] :
        ? [B: $i] : ( element @ B @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[31]) ).

thf(205,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ B @ ( powerset @ ( powerset @ A ) ) )
         => ( element @ ( complements_of_subsets @ A @ B ) @ ( powerset @ ( powerset @ A ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[33]) ).

thf(206,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ B @ ( powerset @ A ) )
         => ( element @ ( subset_complement @ A @ B ) @ ( powerset @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[38]) ).

thf(207,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ B @ ( powerset @ ( powerset @ A ) ) )
         => ! [C: $i] :
              ( ( element @ C @ ( powerset @ ( powerset @ A ) ) )
             => ( ( C
                  = ( complements_of_subsets @ A @ B ) )
              <=> ! [D: $i] :
                    ( ( element @ D @ ( powerset @ A ) )
                   => ( ( in @ D @ C )
                    <=> ( in @ ( subset_complement @ A @ D ) @ B ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[46]) ).

thf(208,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
        <=> ( ( set_intersection2 @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[47]) ).

thf(209,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ B @ ( powerset @ A ) )
         => ( ( subset_complement @ A @ B )
            = ( set_difference @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[49]) ).

thf(210,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ~ ( empty @ A )
           => ( ( element @ B @ A )
            <=> ( in @ B @ A ) ) )
          & ( ( empty @ A )
           => ( ( element @ B @ A )
            <=> ( empty @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[57]) ).

thf(211,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( B
            = ( powerset @ A ) )
        <=> ! [C: $i] :
              ( ( in @ C @ B )
            <=> ( subset @ C @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[58]) ).

thf(212,plain,
    ( ( ! [A: $i] :
          ( ( A = empty_set )
        <=> ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[59]) ).

thf(213,plain,
    ( ( ! [A: $i] :
          ( ( union @ ( powerset @ A ) )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[68]) ).

thf(214,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( element @ C @ ( powerset @ A ) )
         => ~ ( ( in @ B @ ( subset_complement @ A @ C ) )
              & ( in @ B @ C ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[79]) ).

thf(215,plain,
    ( ( ! [A: $i] :
          ( ( A != empty_set )
         => ! [B: $i] :
              ( ( element @ B @ ( powerset @ A ) )
             => ! [C: $i] :
                  ( ( element @ C @ A )
                 => ( ~ ( in @ C @ B )
                   => ( in @ C @ ( subset_complement @ A @ B ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[80]) ).

thf(216,plain,
    ( ( ! [A: $i] :
          ( ( subset @ A @ empty_set )
         => ( A = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[87]) ).

thf(217,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ ( singleton @ B ) )
        <=> ( ( A = empty_set )
            | ( A
              = ( singleton @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[89]) ).

thf(218,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[93]) ).

thf(219,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[97]) ).

thf(220,plain,
    ( ( ( powerset @ empty_set )
      = ( singleton @ empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[100]) ).

thf(221,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ( in @ C @ A )
             => ( in @ C @ B ) )
         => ( element @ A @ ( powerset @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[110]) ).

thf(222,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( subset @ A @ ( singleton @ B ) )
        <=> ( ( A = empty_set )
            | ( A
              = ( singleton @ B ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[113]) ).

thf(223,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( element @ B @ ( powerset @ A ) )
         => ! [C: $i] :
              ( ( in @ C @ B )
             => ( in @ C @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[115]) ).

thf(224,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[116]) ).

thf(225,plain,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $true ),
    inference(unfold_def,[status(thm)],[121]) ).

thf(226,plain,
    ( ( ! [SY237: $i] :
          ( ( element @ SY237 @ ( powerset @ ( powerset @ sK1_A ) ) )
         => ~ ( ( SY237 != empty_set )
              & ( ( complements_of_subsets @ sK1_A @ SY237 )
                = empty_set ) ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[124]) ).

thf(227,plain,
    ( ( ( element @ sK2_SY237 @ ( powerset @ ( powerset @ sK1_A ) ) )
     => ~ ( ( sK2_SY237 != empty_set )
          & ( ( complements_of_subsets @ sK1_A @ sK2_SY237 )
            = empty_set ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[226]) ).

thf(228,plain,
    ( ( element @ sK2_SY237 @ ( powerset @ ( powerset @ sK1_A ) ) )
    = $true ),
    inference(standard_cnf,[status(thm)],[227]) ).

thf(229,plain,
    ( ( ~ ( ( sK2_SY237 != empty_set )
          & ( ( complements_of_subsets @ sK1_A @ sK2_SY237 )
            = empty_set ) ) )
    = $false ),
    inference(standard_cnf,[status(thm)],[227]) ).

thf(230,plain,
    ( ( ( sK2_SY237 != empty_set )
      & ( ( complements_of_subsets @ sK1_A @ sK2_SY237 )
        = empty_set ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[229]) ).

thf(231,plain,
    ( ( ( sK2_SY237 != empty_set )
      & ( ( complements_of_subsets @ sK1_A @ sK2_SY237 )
        = empty_set ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[230]) ).

thf(232,plain,
    ( ( ! [A: $i] :
          ( ! [SY238: $i] :
              ( ~ ( subset @ SY238 @ ( sK3_B @ A ) )
              | ( are_equipotent @ SY238 @ ( sK3_B @ A ) )
              | ( in @ SY238 @ ( sK3_B @ A ) ) )
          & ! [SY239: $i] :
              ( ( ! [SY244: $i] :
                    ( ~ ( subset @ SY244 @ SY239 )
                    | ( in @ SY244 @ ( sK4_SY240 @ SY239 @ A ) ) )
                & ( in @ ( sK4_SY240 @ SY239 @ A ) @ ( sK3_B @ A ) ) )
              | ~ ( in @ SY239 @ ( sK3_B @ A ) ) )
          & ! [SY242: $i,SY243: $i] :
              ( ~ ( in @ SY242 @ ( sK3_B @ A ) )
              | ~ ( subset @ SY243 @ SY242 )
              | ( in @ SY243 @ ( sK3_B @ A ) ) )
          & ( in @ A @ ( sK3_B @ A ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[125]) ).

thf(233,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
          | ~ ( empty @ A )
          | ~ ( empty @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[126]) ).

thf(234,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ B )
          | ~ ( in @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[127]) ).

thf(235,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ~ ( in @ ( sK5_C @ B @ A ) @ A )
              | ~ ( in @ ( sK5_C @ B @ A ) @ B ) )
            & ( ( in @ ( sK5_C @ B @ A ) @ A )
              | ( in @ ( sK5_C @ B @ A ) @ B ) ) )
          | ( A = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[128]) ).

thf(236,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( disjoint @ B @ A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[129]) ).

thf(237,plain,
    ( ( ! [A: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[130]) ).

thf(238,plain,
    ( ( ~ ( empty @ sK6_A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[131]) ).

thf(239,plain,
    ( ( empty @ sK7_A )
    = $true ),
    inference(extcnf_combined,[status(esa)],[132]) ).

thf(240,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ A )
          = A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[133]) ).

thf(241,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[134]) ).

thf(242,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[135]) ).

thf(243,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[136]) ).

thf(244,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)],[138]) ).

thf(245,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK8_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK8_D @ C @ B @ A ) @ B )
                  | ~ ( in @ ( sK8_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK8_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK8_D @ C @ B @ A ) @ C ) )
                & ( ~ ( in @ ( sK8_D @ C @ B @ A ) @ B )
                  | ( in @ ( sK8_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)],[139]) ).

thf(246,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ! [SY245: $i] :
                  ( ~ ( in @ ( sK10_C @ B @ A ) @ SY245 )
                  | ~ ( in @ SY245 @ A ) )
              | ~ ( in @ ( sK10_C @ B @ A ) @ B ) )
            & ( ( ( in @ ( sK10_C @ B @ A ) @ ( sK11_SY246 @ B @ A ) )
                & ( in @ ( sK11_SY246 @ B @ A ) @ A ) )
              | ( in @ ( sK10_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 @ ( sK9_D @ C @ B @ A ) )
                  & ( in @ ( sK9_D @ C @ B @ A ) @ A ) ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[140]) ).

thf(247,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK12_D @ C @ B @ A ) @ A )
                  | ~ ( in @ ( sK12_D @ C @ B @ A ) @ B )
                  | ~ ( in @ ( sK12_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK12_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK12_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK12_D @ C @ B @ A ) @ B )
                  | ( in @ ( sK12_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)],[141]) ).

thf(248,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( in @ ( sK13_C @ B @ A ) @ A )
            & ~ ( in @ ( sK13_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)],[142]) ).

thf(249,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK14_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK14_D @ C @ B @ A ) @ A ) )
                & ( ~ ( in @ ( sK14_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK14_D @ C @ B @ A ) @ B ) )
                & ( ( in @ ( sK14_D @ C @ B @ A ) @ C )
                  | ( in @ ( sK14_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK14_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)],[143]) ).

thf(250,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK15_D @ C @ B @ A ) @ C )
                  | ( ( sK15_D @ C @ B @ A )
                   != A ) )
                & ( ~ ( in @ ( sK15_D @ C @ B @ A ) @ C )
                  | ( ( sK15_D @ C @ B @ A )
                   != B ) )
                & ( ( in @ ( sK15_D @ C @ B @ A ) @ C )
                  | ( ( sK15_D @ C @ B @ A )
                    = A )
                  | ( ( sK15_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)],[144]) ).

thf(251,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ( ( sK16_C @ B @ A )
               != A )
              | ~ ( in @ ( sK16_C @ B @ A ) @ B ) )
            & ( ( ( sK16_C @ B @ A )
                = A )
              | ( in @ ( sK16_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)],[145]) ).

thf(252,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)],[146]) ).

thf(253,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ~ ( in @ B @ A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[149]) ).

thf(254,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
           != ( unordered_pair @ B @ C ) )
          | ( B = C ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[150]) ).

thf(255,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ A @ ( union @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[151]) ).

thf(256,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ( singleton @ A )
             != ( unordered_pair @ B @ C ) )
          | ( A = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[152]) ).

thf(257,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)],[153]) ).

thf(258,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)],[154]) ).

thf(259,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
          | ( A = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[156]) ).

thf(260,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ ( singleton @ B ) )
           != A )
          | ~ ( in @ B @ A ) )
      & ! [A: $i,B: $i] :
          ( ( in @ B @ A )
          | ( ( set_difference @ A @ ( singleton @ B ) )
            = A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[158]) ).

thf(261,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( disjoint @ B @ C )
          | ~ ( subset @ A @ B )
          | ( disjoint @ A @ C ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[159]) ).

thf(262,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ B @ A )
          | ~ ( subset @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[160]) ).

thf(263,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
          | ( in @ ( sK17_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)],[161]) ).

thf(264,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[163]) ).

thf(265,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( B
            = ( set_union2 @ A @ ( set_difference @ B @ A ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[164]) ).

thf(266,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ A ) )
          | ( ! [C: $i] :
                ( ~ ( element @ C @ ( powerset @ A ) )
                | ~ ( disjoint @ B @ C )
                | ( subset @ B @ ( subset_complement @ A @ C ) ) )
            & ! [C: $i] :
                ( ~ ( element @ C @ ( powerset @ A ) )
                | ~ ( subset @ B @ ( subset_complement @ A @ C ) )
                | ( disjoint @ B @ C ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[165]) ).

thf(267,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
          | ( ( in @ ( sK18_C @ B @ A ) @ A )
            & ( in @ ( sK18_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)],[167]) ).

thf(268,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)],[169]) ).

thf(269,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)],[170]) ).

thf(270,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)],[172]) ).

thf(271,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_intersection2 @ A @ B )
            = A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[173]) ).

thf(272,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)],[174]) ).

thf(273,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ B @ C )
          | ( subset @ A @ C ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[175]) ).

thf(274,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)],[176]) ).

thf(275,plain,
    ( ( ! [A: $i] :
          ( ! [SY247: $i] :
              ( ~ ( subset @ SY247 @ ( sK19_B @ A ) )
              | ( are_equipotent @ SY247 @ ( sK19_B @ A ) )
              | ( in @ SY247 @ ( sK19_B @ A ) ) )
          & ! [SY248: $i] :
              ( ~ ( in @ SY248 @ ( sK19_B @ A ) )
              | ( in @ ( powerset @ SY248 ) @ ( sK19_B @ A ) ) )
          & ! [SY249: $i,SY250: $i] :
              ( ~ ( in @ SY249 @ ( sK19_B @ A ) )
              | ~ ( subset @ SY250 @ SY249 )
              | ( in @ SY250 @ ( sK19_B @ A ) ) )
          & ( in @ A @ ( sK19_B @ A ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[178]) ).

thf(276,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_union2 @ A @ B )
            = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[179]) ).

thf(277,plain,
    ( ( ! [A: $i,B: $i,C: $i,D: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ C @ D )
          | ( subset @ ( cartesian_product2 @ A @ C ) @ ( cartesian_product2 @ B @ D ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[180]) ).

thf(278,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i] :
              ( ~ ( subset @ A @ B )
              | ! [C: $i] : ( subset @ ( cartesian_product2 @ A @ C ) @ ( cartesian_product2 @ B @ C ) ) )
          & ! [B: $i] :
              ( ~ ( subset @ A @ B )
              | ! [C: $i] : ( subset @ ( cartesian_product2 @ C @ A ) @ ( cartesian_product2 @ C @ B ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[181]) ).

thf(279,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ A @ ( union @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[182]) ).

thf(280,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)],[183]) ).

thf(281,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)],[184]) ).

thf(282,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
          | ( disjoint @ ( singleton @ A ) @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[185]) ).

thf(283,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( disjoint @ ( singleton @ A ) @ B )
          | ~ ( in @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[186]) ).

thf(284,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[187]) ).

thf(285,plain,
    ( ( ! [A: $i] :
          ( ~ ( empty @ A )
          | ( A = empty_set ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[188]) ).

thf(286,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( element @ B @ ( powerset @ C ) )
          | ~ ( in @ A @ B )
          | ~ ( empty @ C ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[189]) ).

thf(287,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( element @ B @ ( powerset @ C ) )
          | ~ ( in @ A @ B )
          | ( element @ A @ C ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[190]) ).

thf(288,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ A @ ( powerset @ B ) )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( element @ A @ ( powerset @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[192]) ).

thf(289,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ A @ B )
          | ( empty @ B )
          | ( in @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[194]) ).

thf(290,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( element @ A @ B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[196]) ).

thf(291,plain,
    ( ( ! [A: $i] :
          ( ( element @ ( sK20_B @ A ) @ ( powerset @ A ) )
          & ( empty @ ( sK20_B @ A ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[198]) ).

thf(292,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ( ( element @ ( sK21_B @ A ) @ ( powerset @ A ) )
            & ~ ( empty @ ( sK21_B @ A ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[199]) ).

thf(293,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ ( powerset @ A ) ) )
          | ( ( complements_of_subsets @ A @ ( complements_of_subsets @ A @ B ) )
            = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[200]) ).

thf(294,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ A ) )
          | ( ( subset_complement @ A @ ( subset_complement @ A @ B ) )
            = B ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[201]) ).

thf(295,plain,
    ( ( ! [A: $i] : ( element @ ( sK22_B @ A ) @ A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[204]) ).

thf(296,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ ( powerset @ A ) ) )
          | ( element @ ( complements_of_subsets @ A @ B ) @ ( powerset @ ( powerset @ A ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[205]) ).

thf(297,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ A ) )
          | ( element @ ( subset_complement @ A @ B ) @ ( powerset @ A ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[206]) ).

thf(298,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ ( powerset @ A ) ) )
          | ( ! [C: $i] :
                ( ~ ( element @ C @ ( powerset @ ( powerset @ A ) ) )
                | ( ( element @ ( sK23_D @ C @ B @ A ) @ ( powerset @ A ) )
                  & ( ~ ( in @ ( sK23_D @ C @ B @ A ) @ C )
                    | ~ ( in @ ( subset_complement @ A @ ( sK23_D @ C @ B @ A ) ) @ B ) )
                  & ( ( in @ ( sK23_D @ C @ B @ A ) @ C )
                    | ( in @ ( subset_complement @ A @ ( sK23_D @ C @ B @ A ) ) @ B ) ) )
                | ( C
                  = ( complements_of_subsets @ A @ B ) ) )
            & ! [C: $i] :
                ( ~ ( element @ C @ ( powerset @ ( powerset @ A ) ) )
                | ( C
                 != ( complements_of_subsets @ A @ B ) )
                | ( ! [D: $i] :
                      ( ~ ( element @ D @ ( powerset @ A ) )
                      | ~ ( in @ D @ C )
                      | ( in @ ( subset_complement @ A @ D ) @ B ) )
                  & ! [D: $i] :
                      ( ~ ( element @ D @ ( powerset @ A ) )
                      | ~ ( in @ ( subset_complement @ A @ D ) @ B )
                      | ( in @ D @ C ) ) ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[207]) ).

thf(299,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)],[208]) ).

thf(300,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ A ) )
          | ( ( subset_complement @ A @ B )
            = ( set_difference @ A @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[209]) ).

thf(301,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ( ~ ( element @ B @ A )
              | ( in @ B @ A ) ) )
      & ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ( ~ ( in @ B @ A )
              | ( element @ B @ A ) ) )
      & ! [A: $i] :
          ( ~ ( empty @ A )
          | ! [B: $i] :
              ( ~ ( element @ B @ A )
              | ( empty @ B ) ) )
      & ! [A: $i] :
          ( ~ ( empty @ A )
          | ! [B: $i] :
              ( ~ ( empty @ B )
              | ( element @ B @ A ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[210]) ).

thf(302,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ~ ( in @ ( sK24_C @ B @ A ) @ B )
              | ~ ( subset @ ( sK24_C @ B @ A ) @ A ) )
            & ( ( in @ ( sK24_C @ B @ A ) @ B )
              | ( subset @ ( sK24_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)],[211]) ).

thf(303,plain,
    ( ( ! [A: $i] :
          ( ( in @ ( sK25_B @ A ) @ A )
          | ( A = empty_set ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[212]) ).

thf(304,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( element @ C @ ( powerset @ A ) )
          | ~ ( in @ B @ ( subset_complement @ A @ C ) )
          | ~ ( in @ B @ C ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[214]) ).

thf(305,plain,
    ( ( ! [A: $i] :
          ( ( A = empty_set )
          | ! [B: $i] :
              ( ~ ( element @ B @ ( powerset @ A ) )
              | ! [C: $i] :
                  ( ~ ( element @ C @ A )
                  | ( in @ C @ B )
                  | ( in @ C @ ( subset_complement @ A @ B ) ) ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[215]) ).

thf(306,plain,
    ( ( ! [A: $i] :
          ( ~ ( subset @ A @ empty_set )
          | ( A = empty_set ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[216]) ).

thf(307,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)],[217]) ).

thf(308,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)],[218]) ).

thf(309,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( in @ ( sK26_C @ B @ A ) @ A )
            & ~ ( in @ ( sK26_C @ B @ A ) @ B ) )
          | ( element @ A @ ( powerset @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[221]) ).

thf(310,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)],[222]) ).

thf(311,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ A ) )
          | ! [C: $i] :
              ( ~ ( in @ C @ B )
              | ( in @ C @ A ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[223]) ).

thf(312,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)],[224]) ).

thf(313,plain,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[225]) ).

thf(314,plain,
    ( ( ! [A: $i] :
          ( ( singleton @ A )
         != empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[313]) ).

thf(315,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)],[312]) ).

thf(316,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ A ) )
          | ! [C: $i] :
              ( ~ ( in @ C @ B )
              | ( in @ C @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[311]) ).

thf(317,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)],[310]) ).

thf(318,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( in @ ( sK26_C @ B @ A ) @ A )
            & ~ ( in @ ( sK26_C @ B @ A ) @ B ) )
          | ( element @ A @ ( powerset @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[309]) ).

thf(319,plain,
    ( ( ( powerset @ empty_set )
      = ( singleton @ empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[220]) ).

thf(320,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(copy,[status(thm)],[219]) ).

thf(321,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)],[308]) ).

thf(322,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)],[307]) ).

thf(323,plain,
    ( ( ! [A: $i] :
          ( ~ ( subset @ A @ empty_set )
          | ( A = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[306]) ).

thf(324,plain,
    ( ( ! [A: $i] :
          ( ( A = empty_set )
          | ! [B: $i] :
              ( ~ ( element @ B @ ( powerset @ A ) )
              | ! [C: $i] :
                  ( ~ ( element @ C @ A )
                  | ( in @ C @ B )
                  | ( in @ C @ ( subset_complement @ A @ B ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[305]) ).

thf(325,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( element @ C @ ( powerset @ A ) )
          | ~ ( in @ B @ ( subset_complement @ A @ C ) )
          | ~ ( in @ B @ C ) ) )
    = $true ),
    inference(copy,[status(thm)],[304]) ).

thf(326,plain,
    ( ( ! [A: $i] :
          ( ( union @ ( powerset @ A ) )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[213]) ).

thf(327,plain,
    ( ( ! [A: $i] :
          ( ( in @ ( sK25_B @ A ) @ A )
          | ( A = empty_set ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[303]) ).

thf(328,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ~ ( in @ ( sK24_C @ B @ A ) @ B )
              | ~ ( subset @ ( sK24_C @ B @ A ) @ A ) )
            & ( ( in @ ( sK24_C @ B @ A ) @ B )
              | ( subset @ ( sK24_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)],[302]) ).

thf(329,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ( ~ ( element @ B @ A )
              | ( in @ B @ A ) ) )
      & ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ( ~ ( in @ B @ A )
              | ( element @ B @ A ) ) )
      & ! [A: $i] :
          ( ~ ( empty @ A )
          | ! [B: $i] :
              ( ~ ( element @ B @ A )
              | ( empty @ B ) ) )
      & ! [A: $i] :
          ( ~ ( empty @ A )
          | ! [B: $i] :
              ( ~ ( empty @ B )
              | ( element @ B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[301]) ).

thf(330,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ A ) )
          | ( ( subset_complement @ A @ B )
            = ( set_difference @ A @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[300]) ).

thf(331,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)],[299]) ).

thf(332,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ ( powerset @ A ) ) )
          | ( ! [C: $i] :
                ( ~ ( element @ C @ ( powerset @ ( powerset @ A ) ) )
                | ( ( element @ ( sK23_D @ C @ B @ A ) @ ( powerset @ A ) )
                  & ( ~ ( in @ ( sK23_D @ C @ B @ A ) @ C )
                    | ~ ( in @ ( subset_complement @ A @ ( sK23_D @ C @ B @ A ) ) @ B ) )
                  & ( ( in @ ( sK23_D @ C @ B @ A ) @ C )
                    | ( in @ ( subset_complement @ A @ ( sK23_D @ C @ B @ A ) ) @ B ) ) )
                | ( C
                  = ( complements_of_subsets @ A @ B ) ) )
            & ! [C: $i] :
                ( ~ ( element @ C @ ( powerset @ ( powerset @ A ) ) )
                | ( C
                 != ( complements_of_subsets @ A @ B ) )
                | ( ! [D: $i] :
                      ( ~ ( element @ D @ ( powerset @ A ) )
                      | ~ ( in @ D @ C )
                      | ( in @ ( subset_complement @ A @ D ) @ B ) )
                  & ! [D: $i] :
                      ( ~ ( element @ D @ ( powerset @ A ) )
                      | ~ ( in @ ( subset_complement @ A @ D ) @ B )
                      | ( in @ D @ C ) ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[298]) ).

thf(333,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ A ) )
          | ( element @ ( subset_complement @ A @ B ) @ ( powerset @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[297]) ).

thf(334,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ ( powerset @ A ) ) )
          | ( element @ ( complements_of_subsets @ A @ B ) @ ( powerset @ ( powerset @ A ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[296]) ).

thf(335,plain,
    ( ( ! [A: $i] : ( element @ ( sK22_B @ A ) @ A ) )
    = $true ),
    inference(copy,[status(thm)],[295]) ).

thf(336,plain,
    ( ( ! [A: $i] :
          ~ ( empty @ ( powerset @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[203]) ).

thf(337,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(copy,[status(thm)],[202]) ).

thf(338,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ A ) )
          | ( ( subset_complement @ A @ ( subset_complement @ A @ B ) )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[294]) ).

thf(339,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ ( powerset @ A ) ) )
          | ( ( complements_of_subsets @ A @ ( complements_of_subsets @ A @ B ) )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[293]) ).

thf(340,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ( ( element @ ( sK21_B @ A ) @ ( powerset @ A ) )
            & ~ ( empty @ ( sK21_B @ A ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[292]) ).

thf(341,plain,
    ( ( ! [A: $i] :
          ( ( element @ ( sK20_B @ A ) @ ( powerset @ A ) )
          & ( empty @ ( sK20_B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[291]) ).

thf(342,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ empty_set )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[197]) ).

thf(343,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( element @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[290]) ).

thf(344,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ empty_set )
          = empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[195]) ).

thf(345,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ A @ B )
          | ( empty @ B )
          | ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[289]) ).

thf(346,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ A @ empty_set )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[193]) ).

thf(347,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ A @ ( powerset @ B ) )
          | ( subset @ A @ B ) )
      & ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( element @ A @ ( powerset @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[288]) ).

thf(348,plain,
    ( ( ! [A: $i] :
          ( ( set_difference @ empty_set @ A )
          = empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[191]) ).

thf(349,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( element @ B @ ( powerset @ C ) )
          | ~ ( in @ A @ B )
          | ( element @ A @ C ) ) )
    = $true ),
    inference(copy,[status(thm)],[287]) ).

thf(350,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( element @ B @ ( powerset @ C ) )
          | ~ ( in @ A @ B )
          | ~ ( empty @ C ) ) )
    = $true ),
    inference(copy,[status(thm)],[286]) ).

thf(351,plain,
    ( ( ! [A: $i] :
          ( ~ ( empty @ A )
          | ( A = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[285]) ).

thf(352,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[284]) ).

thf(353,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( disjoint @ ( singleton @ A ) @ B )
          | ~ ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[283]) ).

thf(354,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
          | ( disjoint @ ( singleton @ A ) @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[282]) ).

thf(355,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)],[281]) ).

thf(356,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)],[280]) ).

thf(357,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ A @ ( union @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[279]) ).

thf(358,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i] :
              ( ~ ( subset @ A @ B )
              | ! [C: $i] : ( subset @ ( cartesian_product2 @ A @ C ) @ ( cartesian_product2 @ B @ C ) ) )
          & ! [B: $i] :
              ( ~ ( subset @ A @ B )
              | ! [C: $i] : ( subset @ ( cartesian_product2 @ C @ A ) @ ( cartesian_product2 @ C @ B ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[278]) ).

thf(359,plain,
    ( ( ! [A: $i,B: $i,C: $i,D: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ C @ D )
          | ( subset @ ( cartesian_product2 @ A @ C ) @ ( cartesian_product2 @ B @ D ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[277]) ).

thf(360,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_union2 @ A @ B )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[276]) ).

thf(361,plain,
    ( ( ! [A: $i] :
          ( ! [SY247: $i] :
              ( ~ ( subset @ SY247 @ ( sK19_B @ A ) )
              | ( are_equipotent @ SY247 @ ( sK19_B @ A ) )
              | ( in @ SY247 @ ( sK19_B @ A ) ) )
          & ! [SY248: $i] :
              ( ~ ( in @ SY248 @ ( sK19_B @ A ) )
              | ( in @ ( powerset @ SY248 ) @ ( sK19_B @ A ) ) )
          & ! [SY249: $i,SY250: $i] :
              ( ~ ( in @ SY249 @ ( sK19_B @ A ) )
              | ~ ( subset @ SY250 @ SY249 )
              | ( in @ SY250 @ ( sK19_B @ A ) ) )
          & ( in @ A @ ( sK19_B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[275]) ).

thf(362,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ ( set_intersection2 @ A @ B ) @ A ) )
    = $true ),
    inference(copy,[status(thm)],[177]) ).

thf(363,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ A @ C )
          | ( subset @ A @ ( set_intersection2 @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[274]) ).

thf(364,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ B @ C )
          | ( subset @ A @ C ) ) )
    = $true ),
    inference(copy,[status(thm)],[273]) ).

thf(365,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] : ( subset @ ( set_intersection2 @ A @ C ) @ ( set_intersection2 @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[272]) ).

thf(366,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( ( set_intersection2 @ A @ B )
            = A ) ) )
    = $true ),
    inference(copy,[status(thm)],[271]) ).

thf(367,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ! [C: $i] : ( subset @ ( set_difference @ A @ C ) @ ( set_difference @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[270]) ).

thf(368,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ ( set_difference @ A @ B ) @ A ) )
    = $true ),
    inference(copy,[status(thm)],[171]) ).

thf(369,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)],[269]) ).

thf(370,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)],[268]) ).

thf(371,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ ( set_difference @ B @ A ) )
          = ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[168]) ).

thf(372,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
          | ( ( in @ ( sK18_C @ B @ A ) @ A )
            & ( in @ ( sK18_C @ B @ A ) @ B ) ) )
      & ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ~ ( in @ C @ A )
              | ~ ( in @ C @ B ) )
          | ~ ( disjoint @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[267]) ).

thf(373,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ ( set_union2 @ A @ B ) @ B )
          = ( set_difference @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[166]) ).

thf(374,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( element @ B @ ( powerset @ A ) )
          | ( ! [C: $i] :
                ( ~ ( element @ C @ ( powerset @ A ) )
                | ~ ( disjoint @ B @ C )
                | ( subset @ B @ ( subset_complement @ A @ C ) ) )
            & ! [C: $i] :
                ( ~ ( element @ C @ ( powerset @ A ) )
                | ~ ( subset @ B @ ( subset_complement @ A @ C ) )
                | ( disjoint @ B @ C ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[266]) ).

thf(375,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ A @ B )
          | ( B
            = ( set_union2 @ A @ ( set_difference @ B @ A ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[265]) ).

thf(376,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( ( set_union2 @ ( singleton @ A ) @ B )
            = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[264]) ).

thf(377,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_difference @ A @ ( set_difference @ A @ B ) )
          = ( set_intersection2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[162]) ).

thf(378,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( disjoint @ A @ B )
          | ( in @ ( sK17_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)],[263]) ).

thf(379,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( proper_subset @ B @ A )
          | ~ ( subset @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[262]) ).

thf(380,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( disjoint @ B @ C )
          | ~ ( subset @ A @ B )
          | ( disjoint @ A @ C ) ) )
    = $true ),
    inference(copy,[status(thm)],[261]) ).

thf(381,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ ( singleton @ B ) )
           != A )
          | ~ ( in @ B @ A ) )
      & ! [A: $i,B: $i] :
          ( ( in @ B @ A )
          | ( ( set_difference @ A @ ( singleton @ B ) )
            = A ) ) )
    = $true ),
    inference(copy,[status(thm)],[260]) ).

thf(382,plain,
    ( ( ! [A: $i] :
          ( ( unordered_pair @ A @ A )
          = ( singleton @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[157]) ).

thf(383,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( subset @ ( singleton @ A ) @ ( singleton @ B ) )
          | ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[259]) ).

thf(384,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ ( set_union2 @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[155]) ).

thf(385,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)],[258]) ).

thf(386,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ~ ( subset @ A @ B )
          | ~ ( subset @ C @ B )
          | ( subset @ ( set_union2 @ A @ C ) @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[257]) ).

thf(387,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ( singleton @ A )
             != ( unordered_pair @ B @ C ) )
          | ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[256]) ).

thf(388,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ( subset @ A @ ( union @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[255]) ).

thf(389,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( singleton @ A )
           != ( unordered_pair @ B @ C ) )
          | ( B = C ) ) )
    = $true ),
    inference(copy,[status(thm)],[254]) ).

thf(390,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[253]) ).

thf(391,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[148]) ).

thf(392,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_intersection2 @ A @ B )
          = ( set_intersection2 @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[147]) ).

thf(393,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)],[252]) ).

thf(394,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ( ( sK16_C @ B @ A )
               != A )
              | ~ ( in @ ( sK16_C @ B @ A ) @ B ) )
            & ( ( ( sK16_C @ B @ A )
                = A )
              | ( in @ ( sK16_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)],[251]) ).

thf(395,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK15_D @ C @ B @ A ) @ C )
                  | ( ( sK15_D @ C @ B @ A )
                   != A ) )
                & ( ~ ( in @ ( sK15_D @ C @ B @ A ) @ C )
                  | ( ( sK15_D @ C @ B @ A )
                   != B ) )
                & ( ( in @ ( sK15_D @ C @ B @ A ) @ C )
                  | ( ( sK15_D @ C @ B @ A )
                    = A )
                  | ( ( sK15_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)],[250]) ).

thf(396,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK14_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK14_D @ C @ B @ A ) @ A ) )
                & ( ~ ( in @ ( sK14_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK14_D @ C @ B @ A ) @ B ) )
                & ( ( in @ ( sK14_D @ C @ B @ A ) @ C )
                  | ( in @ ( sK14_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK14_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)],[249]) ).

thf(397,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( in @ ( sK13_C @ B @ A ) @ A )
            & ~ ( in @ ( sK13_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)],[248]) ).

thf(398,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK12_D @ C @ B @ A ) @ A )
                  | ~ ( in @ ( sK12_D @ C @ B @ A ) @ B )
                  | ~ ( in @ ( sK12_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK12_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK12_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK12_D @ C @ B @ A ) @ B )
                  | ( in @ ( sK12_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)],[247]) ).

thf(399,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ! [SY245: $i] :
                  ( ~ ( in @ ( sK10_C @ B @ A ) @ SY245 )
                  | ~ ( in @ SY245 @ A ) )
              | ~ ( in @ ( sK10_C @ B @ A ) @ B ) )
            & ( ( ( in @ ( sK10_C @ B @ A ) @ ( sK11_SY246 @ B @ A ) )
                & ( in @ ( sK11_SY246 @ B @ A ) @ A ) )
              | ( in @ ( sK10_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 @ ( sK9_D @ C @ B @ A ) )
                  & ( in @ ( sK9_D @ C @ B @ A ) @ A ) ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[246]) ).

thf(400,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK8_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK8_D @ C @ B @ A ) @ B )
                  | ~ ( in @ ( sK8_D @ C @ B @ A ) @ C ) )
                & ( ( in @ ( sK8_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK8_D @ C @ B @ A ) @ C ) )
                & ( ~ ( in @ ( sK8_D @ C @ B @ A ) @ B )
                  | ( in @ ( sK8_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)],[245]) ).

thf(401,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)],[244]) ).

thf(402,plain,
    ( ( ! [A: $i,B: $i] :
          ~ ( empty @ ( ordered_pair @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[137]) ).

thf(403,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[243]) ).

thf(404,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[242]) ).

thf(405,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[241]) ).

thf(406,plain,
    ( ( ! [A: $i] :
          ( ( set_intersection2 @ A @ A )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[240]) ).

thf(407,plain,
    ( ( empty @ sK7_A )
    = $true ),
    inference(copy,[status(thm)],[239]) ).

thf(408,plain,
    ( ( ~ ( empty @ sK6_A ) )
    = $true ),
    inference(copy,[status(thm)],[238]) ).

thf(409,plain,
    ( ( ! [A: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(copy,[status(thm)],[237]) ).

thf(410,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( disjoint @ A @ B )
          | ( disjoint @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[236]) ).

thf(411,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( ~ ( in @ ( sK5_C @ B @ A ) @ A )
              | ~ ( in @ ( sK5_C @ B @ A ) @ B ) )
            & ( ( in @ ( sK5_C @ B @ A ) @ A )
              | ( in @ ( sK5_C @ B @ A ) @ B ) ) )
          | ( A = B ) ) )
    = $true ),
    inference(copy,[status(thm)],[235]) ).

thf(412,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ B )
          | ~ ( in @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[234]) ).

thf(413,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( A = B )
          | ~ ( empty @ A )
          | ~ ( empty @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[233]) ).

thf(414,plain,
    ( ( ! [A: $i] :
          ( ! [SY238: $i] :
              ( ~ ( subset @ SY238 @ ( sK3_B @ A ) )
              | ( are_equipotent @ SY238 @ ( sK3_B @ A ) )
              | ( in @ SY238 @ ( sK3_B @ A ) ) )
          & ! [SY239: $i] :
              ( ( ! [SY244: $i] :
                    ( ~ ( subset @ SY244 @ SY239 )
                    | ( in @ SY244 @ ( sK4_SY240 @ SY239 @ A ) ) )
                & ( in @ ( sK4_SY240 @ SY239 @ A ) @ ( sK3_B @ A ) ) )
              | ~ ( in @ SY239 @ ( sK3_B @ A ) ) )
          & ! [SY242: $i,SY243: $i] :
              ( ~ ( in @ SY242 @ ( sK3_B @ A ) )
              | ~ ( subset @ SY243 @ SY242 )
              | ( in @ SY243 @ ( sK3_B @ A ) ) )
          & ( in @ A @ ( sK3_B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[232]) ).

thf(415,plain,
    ( ( element @ sK2_SY237 @ ( powerset @ ( powerset @ sK1_A ) ) )
    = $true ),
    inference(copy,[status(thm)],[228]) ).

thf(416,plain,
    ( ( ( sK2_SY237 != empty_set )
      & ( ( complements_of_subsets @ sK1_A @ sK2_SY237 )
        = empty_set ) )
    = $true ),
    inference(copy,[status(thm)],[231]) ).

thf(417,plain,
    ( ( ~ ( ~ ! [SX0: $i] :
                ( ( in @ ( sK25_B @ SX0 ) @ SX0 )
                | ( SX0 = empty_set ) )
          | ~ ! [SX0: $i] :
                ( ( SX0 != empty_set )
                | ! [SX1: $i] :
                    ~ ( in @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[327]) ).

thf(418,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)],[401]) ).

thf(419,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)],[322]) ).

thf(420,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( element @ SX0 @ ( powerset @ SX1 ) )
                | ( subset @ SX0 @ SX1 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( subset @ SX0 @ SX1 )
                | ( element @ SX0 @ ( powerset @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[347]) ).

thf(421,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)],[393]) ).

thf(422,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ~ ( in @ ( sK5_C @ SX1 @ SX0 ) @ SX0 )
                  | ~ ( in @ ( sK5_C @ SX1 @ SX0 ) @ SX1 ) )
              | ~ ( ( in @ ( sK5_C @ SX1 @ SX0 ) @ SX0 )
                  | ( in @ ( sK5_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ( SX0 = SX1 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[411]) ).

thf(423,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK14_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ~ ( in @ ( sK14_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) )
                            | ~ ( ~ ( in @ ( sK14_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ~ ( in @ ( sK14_D @ SX2 @ SX1 @ SX0 ) @ SX1 ) ) )
                      | ~ ( ( in @ ( sK14_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                          | ( in @ ( sK14_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                          | ( in @ ( sK14_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)],[396]) ).

thf(424,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ( element @ ( sK20_B @ SX0 ) @ ( powerset @ SX0 ) )
            | ~ ( empty @ ( sK20_B @ SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[341]) ).

thf(425,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)],[369]) ).

thf(426,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i] :
                  ( ~ ( subset @ SX0 @ SX1 )
                  | ! [SX2: $i] : ( subset @ ( cartesian_product2 @ SX0 @ SX2 ) @ ( cartesian_product2 @ SX1 @ SX2 ) ) )
            | ~ ! [SX1: $i] :
                  ( ~ ( subset @ SX0 @ SX1 )
                  | ! [SX2: $i] : ( subset @ ( cartesian_product2 @ SX2 @ SX0 ) @ ( cartesian_product2 @ SX2 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[358]) ).

thf(427,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( in @ ( sK13_C @ SX1 @ SX0 ) @ SX0 )
                    | ~ ~ ( in @ ( sK13_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)],[397]) ).

thf(428,plain,
    ( ( ~ ( ~ ~ ( ~ ! [SX0: $i] :
                      ( ( empty @ SX0 )
                      | ! [SX1: $i] :
                          ( ~ ( element @ SX1 @ SX0 )
                          | ( in @ SX1 @ SX0 ) ) )
                | ~ ! [SX0: $i] :
                      ( ( empty @ SX0 )
                      | ! [SX1: $i] :
                          ( ~ ( in @ SX1 @ SX0 )
                          | ( element @ SX1 @ SX0 ) ) ) )
          | ~ ~ ( ~ ! [SX0: $i] :
                      ( ~ ( empty @ SX0 )
                      | ! [SX1: $i] :
                          ( ~ ( element @ SX1 @ SX0 )
                          | ( empty @ SX1 ) ) )
                | ~ ! [SX0: $i] :
                      ( ~ ( empty @ SX0 )
                      | ! [SX1: $i] :
                          ( ~ ( empty @ SX1 )
                          | ( element @ SX1 @ SX0 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[329]) ).

thf(429,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i] :
                  ( ~ ( subset @ SX1 @ ( sK19_B @ SX0 ) )
                  | ( are_equipotent @ SX1 @ ( sK19_B @ SX0 ) )
                  | ( in @ SX1 @ ( sK19_B @ SX0 ) ) )
            | ~ ~ ( ~ ! [SX1: $i] :
                        ( ~ ( in @ SX1 @ ( sK19_B @ SX0 ) )
                        | ( in @ ( powerset @ SX1 ) @ ( sK19_B @ SX0 ) ) )
                  | ~ ~ ( ~ ! [SX1: $i,SX2: $i] :
                              ( ~ ( in @ SX1 @ ( sK19_B @ SX0 ) )
                              | ~ ( subset @ SX2 @ SX1 )
                              | ( in @ SX2 @ ( sK19_B @ SX0 ) ) )
                        | ~ ( in @ SX0 @ ( sK19_B @ SX0 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[361]) ).

thf(430,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( ( ( sK16_C @ SX1 @ SX0 )
                         != SX0 )
                        | ~ ( in @ ( sK16_C @ SX1 @ SX0 ) @ SX1 ) )
                    | ~ ( ( ( sK16_C @ SX1 @ SX0 )
                          = SX0 )
                        | ( in @ ( sK16_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)],[394]) ).

thf(431,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( element @ SX1 @ ( powerset @ ( powerset @ SX0 ) ) )
          | ~ ( ~ ! [SX2: $i] :
                    ( ~ ( element @ SX2 @ ( powerset @ ( powerset @ SX0 ) ) )
                    | ~ ( ~ ( element @ ( sK23_D @ SX2 @ SX1 @ SX0 ) @ ( powerset @ SX0 ) )
                        | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                  | ~ ( in @ ( subset_complement @ SX0 @ ( sK23_D @ SX2 @ SX1 @ SX0 ) ) @ SX1 ) )
                              | ~ ( ( in @ ( sK23_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                  | ( in @ ( subset_complement @ SX0 @ ( sK23_D @ SX2 @ SX1 @ SX0 ) ) @ SX1 ) ) ) )
                    | ( SX2
                      = ( complements_of_subsets @ SX0 @ SX1 ) ) )
              | ~ ! [SX2: $i] :
                    ( ~ ( element @ SX2 @ ( powerset @ ( powerset @ SX0 ) ) )
                    | ( SX2
                     != ( complements_of_subsets @ SX0 @ SX1 ) )
                    | ~ ( ~ ! [SX3: $i] :
                              ( ~ ( element @ SX3 @ ( powerset @ SX0 ) )
                              | ~ ( in @ SX3 @ SX2 )
                              | ( in @ ( subset_complement @ SX0 @ SX3 ) @ SX1 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( element @ SX3 @ ( powerset @ SX0 ) )
                              | ~ ( in @ ( subset_complement @ SX0 @ SX3 ) @ SX1 )
                              | ( in @ SX3 @ SX2 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[332]) ).

thf(432,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)],[370]) ).

thf(433,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i] :
                  ( ~ ( subset @ SX1 @ ( sK3_B @ SX0 ) )
                  | ( are_equipotent @ SX1 @ ( sK3_B @ SX0 ) )
                  | ( in @ SX1 @ ( sK3_B @ SX0 ) ) )
            | ~ ~ ( ~ ! [SX1: $i] :
                        ( ~ ( ~ ! [SX2: $i] :
                                  ( ~ ( subset @ SX2 @ SX1 )
                                  | ( in @ SX2 @ ( sK4_SY240 @ SX1 @ SX0 ) ) )
                            | ~ ( in @ ( sK4_SY240 @ SX1 @ SX0 ) @ ( sK3_B @ SX0 ) ) )
                        | ~ ( in @ SX1 @ ( sK3_B @ SX0 ) ) )
                  | ~ ~ ( ~ ! [SX1: $i,SX2: $i] :
                              ( ~ ( in @ SX1 @ ( sK3_B @ SX0 ) )
                              | ~ ( subset @ SX2 @ SX1 )
                              | ( in @ SX2 @ ( sK3_B @ SX0 ) ) )
                        | ~ ( in @ SX0 @ ( sK3_B @ SX0 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[414]) ).

thf(434,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK8_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                          | ( in @ ( sK8_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                          | ~ ( in @ ( sK8_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK8_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                                | ( in @ ( sK8_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                            | ~ ( ~ ( in @ ( sK8_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                                | ( in @ ( sK8_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)],[400]) ).

thf(435,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( disjoint @ SX0 @ SX1 )
                | ( in @ ( sK17_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)],[378]) ).

thf(436,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( in @ ( sK26_C @ SX1 @ SX0 ) @ SX0 )
              | ~ ~ ( in @ ( sK26_C @ SX1 @ SX0 ) @ SX1 ) )
          | ( element @ SX0 @ ( powerset @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[318]) ).

thf(437,plain,
    ( ( ! [SX0: $i] :
          ( ( empty @ SX0 )
          | ~ ( ~ ( element @ ( sK21_B @ SX0 ) @ ( powerset @ SX0 ) )
              | ~ ~ ( empty @ ( sK21_B @ SX0 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[340]) ).

thf(438,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( disjoint @ SX0 @ SX1 )
                | ~ ( ~ ( in @ ( sK18_C @ SX1 @ SX0 ) @ SX0 )
                    | ~ ( in @ ( sK18_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)],[372]) ).

thf(439,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( element @ SX1 @ ( powerset @ SX0 ) )
          | ~ ( ~ ! [SX2: $i] :
                    ( ~ ( element @ SX2 @ ( powerset @ SX0 ) )
                    | ~ ( disjoint @ SX1 @ SX2 )
                    | ( subset @ SX1 @ ( subset_complement @ SX0 @ SX2 ) ) )
              | ~ ! [SX2: $i] :
                    ( ~ ( element @ SX2 @ ( powerset @ SX0 ) )
                    | ~ ( subset @ SX1 @ ( subset_complement @ SX0 @ SX2 ) )
                    | ( disjoint @ SX1 @ SX2 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[374]) ).

thf(440,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)],[321]) ).

thf(441,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)],[331]) ).

thf(442,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( ! [SX2: $i] :
                            ( ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ SX2 )
                            | ~ ( in @ SX2 @ SX0 ) )
                        | ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ SX1 ) )
                    | ~ ( ~ ( ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ ( sK11_SY246 @ SX1 @ SX0 ) )
                            | ~ ( in @ ( sK11_SY246 @ SX1 @ SX0 ) @ SX0 ) )
                        | ( in @ ( sK10_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 @ ( sK9_D @ SX2 @ SX1 @ SX0 ) )
                              | ~ ( in @ ( sK9_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[399]) ).

thf(443,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)],[315]) ).

thf(444,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK12_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                          | ~ ( in @ ( sK12_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                          | ~ ( in @ ( sK12_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK12_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                                | ( in @ ( sK12_D @ SX2 @ SX1 @ SX0 ) @ SX2 ) )
                            | ~ ( ( in @ ( sK12_D @ SX2 @ SX1 @ SX0 ) @ SX1 )
                                | ( in @ ( sK12_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)],[398]) ).

thf(445,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)],[355]) ).

thf(446,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)],[317]) ).

thf(447,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK15_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ( ( sK15_D @ SX2 @ SX1 @ SX0 )
                                 != SX0 ) )
                            | ~ ( ~ ( in @ ( sK15_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ( ( sK15_D @ SX2 @ SX1 @ SX0 )
                                 != SX1 ) ) )
                      | ~ ( ( in @ ( sK15_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                          | ( ( sK15_D @ SX2 @ SX1 @ SX0 )
                            = SX0 )
                          | ( ( sK15_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)],[395]) ).

thf(448,plain,
    ( ( ~ ( ~ ( ( sK2_SY237 != empty_set ) )
          | ( ( complements_of_subsets @ sK1_A @ sK2_SY237 )
           != empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[416]) ).

thf(449,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( ( set_difference @ SX0 @ ( singleton @ SX1 ) )
                 != SX0 )
                | ~ ( in @ SX1 @ SX0 ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( in @ SX1 @ SX0 )
                | ( ( set_difference @ SX0 @ ( singleton @ SX1 ) )
                  = SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[381]) ).

thf(450,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ~ ( ~ ( ~ ( in @ ( sK24_C @ SX1 @ SX0 ) @ SX1 )
                        | ~ ( subset @ ( sK24_C @ SX1 @ SX0 ) @ SX0 ) )
                    | ~ ( ( in @ ( sK24_C @ SX1 @ SX0 ) @ SX1 )
                        | ( subset @ ( sK24_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)],[328]) ).

thf(451,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)],[385]) ).

thf(452,plain,
    ! [SV1: $i] :
      ( ( ( ( singleton @ SV1 )
         != empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[314]) ).

thf(453,plain,
    ! [SV2: $i] :
      ( ( ! [SY251: $i] :
            ( ~ ( element @ SY251 @ ( powerset @ SV2 ) )
            | ! [SY252: $i] :
                ( ~ ( in @ SY252 @ SY251 )
                | ( in @ SY252 @ SV2 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[316]) ).

thf(454,plain,
    ! [SV3: $i] :
      ( ( subset @ empty_set @ SV3 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[320]) ).

thf(455,plain,
    ! [SV4: $i] :
      ( ( ~ ( subset @ SV4 @ empty_set )
        | ( SV4 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[323]) ).

thf(456,plain,
    ! [SV5: $i] :
      ( ( ( SV5 = empty_set )
        | ! [SY253: $i] :
            ( ~ ( element @ SY253 @ ( powerset @ SV5 ) )
            | ! [SY254: $i] :
                ( ~ ( element @ SY254 @ SV5 )
                | ( in @ SY254 @ SY253 )
                | ( in @ SY254 @ ( subset_complement @ SV5 @ SY253 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[324]) ).

thf(457,plain,
    ! [SV6: $i] :
      ( ( ! [SY255: $i,SY256: $i] :
            ( ~ ( element @ SY256 @ ( powerset @ SV6 ) )
            | ~ ( in @ SY255 @ ( subset_complement @ SV6 @ SY256 ) )
            | ~ ( in @ SY255 @ SY256 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[325]) ).

thf(458,plain,
    ! [SV7: $i] :
      ( ( ( union @ ( powerset @ SV7 ) )
        = SV7 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[326]) ).

thf(459,plain,
    ! [SV8: $i] :
      ( ( ! [SY257: $i] :
            ( ~ ( element @ SY257 @ ( powerset @ SV8 ) )
            | ( ( subset_complement @ SV8 @ SY257 )
              = ( set_difference @ SV8 @ SY257 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[330]) ).

thf(460,plain,
    ! [SV9: $i] :
      ( ( ! [SY258: $i] :
            ( ~ ( element @ SY258 @ ( powerset @ SV9 ) )
            | ( element @ ( subset_complement @ SV9 @ SY258 ) @ ( powerset @ SV9 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[333]) ).

thf(461,plain,
    ! [SV10: $i] :
      ( ( ! [SY259: $i] :
            ( ~ ( element @ SY259 @ ( powerset @ ( powerset @ SV10 ) ) )
            | ( element @ ( complements_of_subsets @ SV10 @ SY259 ) @ ( powerset @ ( powerset @ SV10 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[334]) ).

thf(462,plain,
    ! [SV11: $i] :
      ( ( element @ ( sK22_B @ SV11 ) @ SV11 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[335]) ).

thf(463,plain,
    ! [SV12: $i] :
      ( ( ~ ( empty @ ( powerset @ SV12 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[336]) ).

thf(464,plain,
    ! [SV13: $i] :
      ( ( ! [SY260: $i] :
            ( ~ ( element @ SY260 @ ( powerset @ SV13 ) )
            | ( ( subset_complement @ SV13 @ ( subset_complement @ SV13 @ SY260 ) )
              = SY260 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[338]) ).

thf(465,plain,
    ! [SV14: $i] :
      ( ( ! [SY261: $i] :
            ( ~ ( element @ SY261 @ ( powerset @ ( powerset @ SV14 ) ) )
            | ( ( complements_of_subsets @ SV14 @ ( complements_of_subsets @ SV14 @ SY261 ) )
              = SY261 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[339]) ).

thf(466,plain,
    ! [SV15: $i] :
      ( ( ( set_union2 @ SV15 @ empty_set )
        = SV15 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[342]) ).

thf(467,plain,
    ! [SV16: $i] :
      ( ( ! [SY262: $i] :
            ( ~ ( in @ SV16 @ SY262 )
            | ( element @ SV16 @ SY262 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[343]) ).

thf(468,plain,
    ! [SV17: $i] :
      ( ( ( set_intersection2 @ SV17 @ empty_set )
        = empty_set )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[344]) ).

thf(469,plain,
    ! [SV18: $i] :
      ( ( ! [SY263: $i] :
            ( ~ ( element @ SV18 @ SY263 )
            | ( empty @ SY263 )
            | ( in @ SV18 @ SY263 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[345]) ).

thf(470,plain,
    ! [SV19: $i] :
      ( ( ( set_difference @ SV19 @ empty_set )
        = SV19 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[346]) ).

thf(471,plain,
    ! [SV20: $i] :
      ( ( ( set_difference @ empty_set @ SV20 )
        = empty_set )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[348]) ).

thf(472,plain,
    ! [SV21: $i] :
      ( ( ! [SY264: $i,SY265: $i] :
            ( ~ ( element @ SY264 @ ( powerset @ SY265 ) )
            | ~ ( in @ SV21 @ SY264 )
            | ( element @ SV21 @ SY265 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[349]) ).

thf(473,plain,
    ! [SV22: $i] :
      ( ( ! [SY266: $i,SY267: $i] :
            ( ~ ( element @ SY266 @ ( powerset @ SY267 ) )
            | ~ ( in @ SV22 @ SY266 )
            | ~ ( empty @ SY267 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[350]) ).

thf(474,plain,
    ! [SV23: $i] :
      ( ( ~ ( empty @ SV23 )
        | ( SV23 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[351]) ).

thf(475,plain,
    ! [SV24: $i] :
      ( ( ! [SY268: $i] :
            ( ~ ( in @ SV24 @ SY268 )
            | ( ( set_union2 @ ( singleton @ SV24 ) @ SY268 )
              = SY268 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[352]) ).

thf(476,plain,
    ! [SV25: $i] :
      ( ( ! [SY269: $i] :
            ( ~ ( disjoint @ ( singleton @ SV25 ) @ SY269 )
            | ~ ( in @ SV25 @ SY269 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[353]) ).

thf(477,plain,
    ! [SV26: $i] :
      ( ( ! [SY270: $i] :
            ( ( in @ SV26 @ SY270 )
            | ( disjoint @ ( singleton @ SV26 ) @ SY270 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[354]) ).

thf(478,plain,
    ! [SV27: $i] :
      ( ( ! [SY271: $i] :
            ( ~ ( subset @ SV27 @ SY271 )
            | ! [SY272: $i] :
                ( ( in @ SY272 @ SV27 )
                | ( subset @ SV27 @ ( set_difference @ SY271 @ ( singleton @ SY272 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[356]) ).

thf(479,plain,
    ! [SV28: $i] :
      ( ( ! [SY273: $i] :
            ( ~ ( in @ SV28 @ SY273 )
            | ( subset @ SV28 @ ( union @ SY273 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[357]) ).

thf(480,plain,
    ! [SV29: $i] :
      ( ( ! [SY274: $i,SY275: $i,SY276: $i] :
            ( ~ ( subset @ SV29 @ SY274 )
            | ~ ( subset @ SY275 @ SY276 )
            | ( subset @ ( cartesian_product2 @ SV29 @ SY275 ) @ ( cartesian_product2 @ SY274 @ SY276 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[359]) ).

thf(481,plain,
    ! [SV30: $i] :
      ( ( ! [SY277: $i] :
            ( ~ ( subset @ SV30 @ SY277 )
            | ( ( set_union2 @ SV30 @ SY277 )
              = SY277 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[360]) ).

thf(482,plain,
    ! [SV31: $i] :
      ( ( ! [SY278: $i] : ( subset @ ( set_intersection2 @ SV31 @ SY278 ) @ SV31 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[362]) ).

thf(483,plain,
    ! [SV32: $i] :
      ( ( ! [SY279: $i,SY280: $i] :
            ( ~ ( subset @ SV32 @ SY279 )
            | ~ ( subset @ SV32 @ SY280 )
            | ( subset @ SV32 @ ( set_intersection2 @ SY279 @ SY280 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[363]) ).

thf(484,plain,
    ! [SV33: $i] :
      ( ( ! [SY281: $i,SY282: $i] :
            ( ~ ( subset @ SV33 @ SY281 )
            | ~ ( subset @ SY281 @ SY282 )
            | ( subset @ SV33 @ SY282 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[364]) ).

thf(485,plain,
    ! [SV34: $i] :
      ( ( ! [SY283: $i] :
            ( ~ ( subset @ SV34 @ SY283 )
            | ! [SY284: $i] : ( subset @ ( set_intersection2 @ SV34 @ SY284 ) @ ( set_intersection2 @ SY283 @ SY284 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[365]) ).

thf(486,plain,
    ! [SV35: $i] :
      ( ( ! [SY285: $i] :
            ( ~ ( subset @ SV35 @ SY285 )
            | ( ( set_intersection2 @ SV35 @ SY285 )
              = SV35 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[366]) ).

thf(487,plain,
    ! [SV36: $i] :
      ( ( ! [SY286: $i] :
            ( ~ ( subset @ SV36 @ SY286 )
            | ! [SY287: $i] : ( subset @ ( set_difference @ SV36 @ SY287 ) @ ( set_difference @ SY286 @ SY287 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[367]) ).

thf(488,plain,
    ! [SV37: $i] :
      ( ( ! [SY288: $i] : ( subset @ ( set_difference @ SV37 @ SY288 ) @ SV37 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[368]) ).

thf(489,plain,
    ! [SV38: $i] :
      ( ( ! [SY289: $i] :
            ( ( set_union2 @ SV38 @ ( set_difference @ SY289 @ SV38 ) )
            = ( set_union2 @ SV38 @ SY289 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[371]) ).

thf(490,plain,
    ! [SV39: $i] :
      ( ( ! [SY290: $i] :
            ( ( set_difference @ ( set_union2 @ SV39 @ SY290 ) @ SY290 )
            = ( set_difference @ SV39 @ SY290 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[373]) ).

thf(491,plain,
    ! [SV40: $i] :
      ( ( ! [SY291: $i] :
            ( ~ ( subset @ SV40 @ SY291 )
            | ( SY291
              = ( set_union2 @ SV40 @ ( set_difference @ SY291 @ SV40 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[375]) ).

thf(492,plain,
    ! [SV41: $i] :
      ( ( ! [SY292: $i] :
            ( ~ ( in @ SV41 @ SY292 )
            | ( ( set_union2 @ ( singleton @ SV41 ) @ SY292 )
              = SY292 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[376]) ).

thf(493,plain,
    ! [SV42: $i] :
      ( ( ! [SY293: $i] :
            ( ( set_difference @ SV42 @ ( set_difference @ SV42 @ SY293 ) )
            = ( set_intersection2 @ SV42 @ SY293 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[377]) ).

thf(494,plain,
    ! [SV43: $i] :
      ( ( ! [SY294: $i] :
            ( ~ ( proper_subset @ SY294 @ SV43 )
            | ~ ( subset @ SV43 @ SY294 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[379]) ).

thf(495,plain,
    ! [SV44: $i] :
      ( ( ! [SY295: $i,SY296: $i] :
            ( ~ ( disjoint @ SY295 @ SY296 )
            | ~ ( subset @ SV44 @ SY295 )
            | ( disjoint @ SV44 @ SY296 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[380]) ).

thf(496,plain,
    ! [SV45: $i] :
      ( ( ( unordered_pair @ SV45 @ SV45 )
        = ( singleton @ SV45 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[382]) ).

thf(497,plain,
    ! [SV46: $i] :
      ( ( ! [SY297: $i] :
            ( ~ ( subset @ ( singleton @ SV46 ) @ ( singleton @ SY297 ) )
            | ( SV46 = SY297 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[383]) ).

thf(498,plain,
    ! [SV47: $i] :
      ( ( ! [SY298: $i] : ( subset @ SV47 @ ( set_union2 @ SV47 @ SY298 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[384]) ).

thf(499,plain,
    ! [SV48: $i] :
      ( ( ! [SY299: $i,SY300: $i] :
            ( ~ ( subset @ SV48 @ SY299 )
            | ~ ( subset @ SY300 @ SY299 )
            | ( subset @ ( set_union2 @ SV48 @ SY300 ) @ SY299 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[386]) ).

thf(500,plain,
    ! [SV49: $i] :
      ( ( ! [SY301: $i] :
            ( ! [SY302: $i] :
                ( ( singleton @ SV49 )
               != ( unordered_pair @ SY301 @ SY302 ) )
            | ( SV49 = SY301 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[387]) ).

thf(501,plain,
    ! [SV50: $i] :
      ( ( ! [SY303: $i] :
            ( ~ ( in @ SV50 @ SY303 )
            | ( subset @ SV50 @ ( union @ SY303 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[388]) ).

thf(502,plain,
    ! [SV51: $i] :
      ( ( ! [SY304: $i,SY305: $i] :
            ( ( ( singleton @ SV51 )
             != ( unordered_pair @ SY304 @ SY305 ) )
            | ( SY304 = SY305 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[389]) ).

thf(503,plain,
    ! [SV52: $i] :
      ( ( ! [SY306: $i] :
            ( ~ ( in @ SV52 @ SY306 )
            | ~ ( in @ SY306 @ SV52 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[390]) ).

thf(504,plain,
    ! [SV53: $i] :
      ( ( ! [SY307: $i] :
            ( ( set_union2 @ SV53 @ SY307 )
            = ( set_union2 @ SY307 @ SV53 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[391]) ).

thf(505,plain,
    ! [SV54: $i] :
      ( ( ! [SY308: $i] :
            ( ( set_intersection2 @ SV54 @ SY308 )
            = ( set_intersection2 @ SY308 @ SV54 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[392]) ).

thf(506,plain,
    ! [SV55: $i] :
      ( ( ! [SY309: $i] :
            ~ ( empty @ ( ordered_pair @ SV55 @ SY309 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[402]) ).

thf(507,plain,
    ! [SV56: $i] :
      ( ( ( empty @ SV56 )
        | ! [SY310: $i] :
            ~ ( empty @ ( set_union2 @ SV56 @ SY310 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[403]) ).

thf(508,plain,
    ! [SV57: $i] :
      ( ( ( empty @ SV57 )
        | ! [SY311: $i] :
            ~ ( empty @ ( set_union2 @ SY311 @ SV57 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[404]) ).

thf(509,plain,
    ! [SV58: $i] :
      ( ( ( set_union2 @ SV58 @ SV58 )
        = SV58 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[405]) ).

thf(510,plain,
    ! [SV59: $i] :
      ( ( ( set_intersection2 @ SV59 @ SV59 )
        = SV59 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[406]) ).

thf(511,plain,
    ( ( empty @ sK6_A )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[408]) ).

thf(512,plain,
    ! [SV60: $i] :
      ( ( subset @ SV60 @ SV60 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[409]) ).

thf(513,plain,
    ! [SV61: $i] :
      ( ( ! [SY312: $i] :
            ( ~ ( disjoint @ SV61 @ SY312 )
            | ( disjoint @ SY312 @ SV61 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[410]) ).

thf(514,plain,
    ! [SV62: $i] :
      ( ( ! [SY313: $i] :
            ( ~ ( empty @ SY313 )
            | ~ ( in @ SV62 @ SY313 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[412]) ).

thf(515,plain,
    ! [SV63: $i] :
      ( ( ! [SY314: $i] :
            ( ( SV63 = SY314 )
            | ~ ( empty @ SV63 )
            | ~ ( empty @ SY314 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[413]) ).

thf(516,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( in @ ( sK25_B @ SX0 ) @ SX0 )
            | ( SX0 = empty_set ) )
      | ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] :
                ~ ( in @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[417]) ).

thf(517,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)],[418]) ).

thf(518,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)],[419]) ).

thf(519,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( element @ SX0 @ ( powerset @ SX1 ) )
            | ( subset @ SX0 @ SX1 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( element @ SX0 @ ( powerset @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[420]) ).

thf(520,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)],[421]) ).

thf(521,plain,
    ! [SV64: $i] :
      ( ( ! [SY315: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK5_C @ SY315 @ SV64 ) @ SV64 )
                    | ~ ( in @ ( sK5_C @ SY315 @ SV64 ) @ SY315 ) )
                | ~ ( ( in @ ( sK5_C @ SY315 @ SV64 ) @ SV64 )
                    | ( in @ ( sK5_C @ SY315 @ SV64 ) @ SY315 ) ) )
            | ( SV64 = SY315 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[422]) ).

thf(522,plain,
    ! [SV65: $i] :
      ( ( ~ ( ~ ! [SY316: $i,SY317: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                                | ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SV65 ) )
                            | ~ ( ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                                | ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY316 ) ) )
                      | ~ ( ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                          | ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SV65 )
                          | ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY316 ) ) )
                  | ( SY317
                    = ( set_union2 @ SV65 @ SY316 ) ) )
            | ~ ! [SY318: $i,SY319: $i] :
                  ( ( SY319
                   != ( set_union2 @ SV65 @ SY318 ) )
                  | ~ ( ~ ! [SY320: $i] :
                            ( ~ ( in @ SY320 @ SY319 )
                            | ( in @ SY320 @ SV65 )
                            | ( in @ SY320 @ SY318 ) )
                      | ~ ~ ( ~ ! [SY321: $i] :
                                  ( ~ ( in @ SY321 @ SV65 )
                                  | ( in @ SY321 @ SY319 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SY318 )
                                  | ( in @ SX3 @ SY319 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[423]) ).

thf(523,plain,
    ! [SV66: $i] :
      ( ( ~ ( ~ ( element @ ( sK20_B @ SV66 ) @ ( powerset @ SV66 ) )
            | ~ ( empty @ ( sK20_B @ SV66 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[424]) ).

thf(524,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)],[425]) ).

thf(525,plain,
    ! [SV67: $i] :
      ( ( ~ ( ~ ! [SY323: $i] :
                  ( ~ ( subset @ SV67 @ SY323 )
                  | ! [SY324: $i] : ( subset @ ( cartesian_product2 @ SV67 @ SY324 ) @ ( cartesian_product2 @ SY323 @ SY324 ) ) )
            | ~ ! [SY325: $i] :
                  ( ~ ( subset @ SV67 @ SY325 )
                  | ! [SY326: $i] : ( subset @ ( cartesian_product2 @ SY326 @ SV67 ) @ ( cartesian_product2 @ SY326 @ SY325 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[426]) ).

thf(526,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( in @ ( sK13_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ~ ( in @ ( sK13_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)],[427]) ).

thf(527,plain,
    ( ( ~ ~ ( ~ ! [SX0: $i] :
                  ( ( empty @ SX0 )
                  | ! [SX1: $i] :
                      ( ~ ( element @ SX1 @ SX0 )
                      | ( in @ SX1 @ SX0 ) ) )
            | ~ ! [SX0: $i] :
                  ( ( empty @ SX0 )
                  | ! [SX1: $i] :
                      ( ~ ( in @ SX1 @ SX0 )
                      | ( element @ SX1 @ SX0 ) ) ) )
      | ~ ~ ( ~ ! [SX0: $i] :
                  ( ~ ( empty @ SX0 )
                  | ! [SX1: $i] :
                      ( ~ ( element @ SX1 @ SX0 )
                      | ( empty @ SX1 ) ) )
            | ~ ! [SX0: $i] :
                  ( ~ ( empty @ SX0 )
                  | ! [SX1: $i] :
                      ( ~ ( empty @ SX1 )
                      | ( element @ SX1 @ SX0 ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[428]) ).

thf(528,plain,
    ! [SV68: $i] :
      ( ( ~ ( ~ ! [SY327: $i] :
                  ( ~ ( subset @ SY327 @ ( sK19_B @ SV68 ) )
                  | ( are_equipotent @ SY327 @ ( sK19_B @ SV68 ) )
                  | ( in @ SY327 @ ( sK19_B @ SV68 ) ) )
            | ~ ~ ( ~ ! [SY328: $i] :
                        ( ~ ( in @ SY328 @ ( sK19_B @ SV68 ) )
                        | ( in @ ( powerset @ SY328 ) @ ( sK19_B @ SV68 ) ) )
                  | ~ ~ ( ~ ! [SY329: $i,SY330: $i] :
                              ( ~ ( in @ SY329 @ ( sK19_B @ SV68 ) )
                              | ~ ( subset @ SY330 @ SY329 )
                              | ( in @ SY330 @ ( sK19_B @ SV68 ) ) )
                        | ~ ( in @ SV68 @ ( sK19_B @ SV68 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[429]) ).

thf(529,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ( ( sK16_C @ SX1 @ SX0 )
                     != SX0 )
                    | ~ ( in @ ( sK16_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ( ( sK16_C @ SX1 @ SX0 )
                      = SX0 )
                    | ( in @ ( sK16_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)],[430]) ).

thf(530,plain,
    ! [SV69: $i] :
      ( ( ! [SY331: $i] :
            ( ~ ( element @ SY331 @ ( powerset @ ( powerset @ SV69 ) ) )
            | ~ ( ~ ! [SY332: $i] :
                      ( ~ ( element @ SY332 @ ( powerset @ ( powerset @ SV69 ) ) )
                      | ~ ( ~ ( element @ ( sK23_D @ SY332 @ SY331 @ SV69 ) @ ( powerset @ SV69 ) )
                          | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SY332 @ SY331 @ SV69 ) @ SY332 )
                                    | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY332 @ SY331 @ SV69 ) ) @ SY331 ) )
                                | ~ ( ( in @ ( sK23_D @ SY332 @ SY331 @ SV69 ) @ SY332 )
                                    | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY332 @ SY331 @ SV69 ) ) @ SY331 ) ) ) )
                      | ( SY332
                        = ( complements_of_subsets @ SV69 @ SY331 ) ) )
                | ~ ! [SY333: $i] :
                      ( ~ ( element @ SY333 @ ( powerset @ ( powerset @ SV69 ) ) )
                      | ( SY333
                       != ( complements_of_subsets @ SV69 @ SY331 ) )
                      | ~ ( ~ ! [SY334: $i] :
                                ( ~ ( element @ SY334 @ ( powerset @ SV69 ) )
                                | ~ ( in @ SY334 @ SY333 )
                                | ( in @ ( subset_complement @ SV69 @ SY334 ) @ SY331 ) )
                          | ~ ! [SY335: $i] :
                                ( ~ ( element @ SY335 @ ( powerset @ SV69 ) )
                                | ~ ( in @ ( subset_complement @ SV69 @ SY335 ) @ SY331 )
                                | ( in @ SY335 @ SY333 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[431]) ).

thf(531,plain,
    ! [SV70: $i] :
      ( ( ~ ( ~ ! [SY336: $i,SY337: $i] :
                  ( ~ ( in @ SV70 @ SY337 )
                  | ~ ( in @ SY336 @ SY337 )
                  | ( subset @ ( unordered_pair @ SV70 @ SY336 ) @ SY337 ) )
            | ~ ~ ( ~ ! [SY338: $i,SY339: $i] :
                        ( ~ ( subset @ ( unordered_pair @ SV70 @ SY338 ) @ SY339 )
                        | ( in @ SV70 @ SY339 ) )
                  | ~ ! [SY340: $i,SY341: $i] :
                        ( ~ ( subset @ ( unordered_pair @ SV70 @ SY340 ) @ SY341 )
                        | ( in @ SY340 @ SY341 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[432]) ).

thf(532,plain,
    ! [SV71: $i] :
      ( ( ~ ( ~ ! [SY342: $i] :
                  ( ~ ( subset @ SY342 @ ( sK3_B @ SV71 ) )
                  | ( are_equipotent @ SY342 @ ( sK3_B @ SV71 ) )
                  | ( in @ SY342 @ ( sK3_B @ SV71 ) ) )
            | ~ ~ ( ~ ! [SY343: $i] :
                        ( ~ ( ~ ! [SY344: $i] :
                                  ( ~ ( subset @ SY344 @ SY343 )
                                  | ( in @ SY344 @ ( sK4_SY240 @ SY343 @ SV71 ) ) )
                            | ~ ( in @ ( sK4_SY240 @ SY343 @ SV71 ) @ ( sK3_B @ SV71 ) ) )
                        | ~ ( in @ SY343 @ ( sK3_B @ SV71 ) ) )
                  | ~ ~ ( ~ ! [SY345: $i,SY346: $i] :
                              ( ~ ( in @ SY345 @ ( sK3_B @ SV71 ) )
                              | ~ ( subset @ SY346 @ SY345 )
                              | ( in @ SY346 @ ( sK3_B @ SV71 ) ) )
                        | ~ ( in @ SV71 @ ( sK3_B @ SV71 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[433]) ).

thf(533,plain,
    ! [SV72: $i] :
      ( ( ~ ( ~ ! [SY347: $i,SY348: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SV72 )
                          | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY347 )
                          | ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SV72 )
                                | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) )
                            | ~ ( ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY347 )
                                | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) ) ) )
                  | ( SY348
                    = ( set_difference @ SV72 @ SY347 ) ) )
            | ~ ! [SY349: $i,SY350: $i] :
                  ( ( SY350
                   != ( set_difference @ SV72 @ SY349 ) )
                  | ~ ( ~ ! [SY351: $i] :
                            ( ~ ( in @ SY351 @ SV72 )
                            | ( in @ SY351 @ SY349 )
                            | ( in @ SY351 @ SY350 ) )
                      | ~ ~ ( ~ ! [SY352: $i] :
                                  ( ~ ( in @ SY352 @ SY350 )
                                  | ( in @ SY352 @ SV72 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SY350 )
                                  | ~ ( in @ SX3 @ SY349 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[434]) ).

thf(534,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ( in @ ( sK17_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)],[435]) ).

thf(535,plain,
    ! [SV73: $i] :
      ( ( ! [SY354: $i] :
            ( ~ ( ~ ( in @ ( sK26_C @ SY354 @ SV73 ) @ SV73 )
                | ~ ~ ( in @ ( sK26_C @ SY354 @ SV73 ) @ SY354 ) )
            | ( element @ SV73 @ ( powerset @ SY354 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[436]) ).

thf(536,plain,
    ! [SV74: $i] :
      ( ( ( empty @ SV74 )
        | ~ ( ~ ( element @ ( sK21_B @ SV74 ) @ ( powerset @ SV74 ) )
            | ~ ~ ( empty @ ( sK21_B @ SV74 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[437]) ).

thf(537,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ~ ( ~ ( in @ ( sK18_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ( in @ ( sK18_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)],[438]) ).

thf(538,plain,
    ! [SV75: $i] :
      ( ( ! [SY355: $i] :
            ( ~ ( element @ SY355 @ ( powerset @ SV75 ) )
            | ~ ( ~ ! [SY356: $i] :
                      ( ~ ( element @ SY356 @ ( powerset @ SV75 ) )
                      | ~ ( disjoint @ SY355 @ SY356 )
                      | ( subset @ SY355 @ ( subset_complement @ SV75 @ SY356 ) ) )
                | ~ ! [SY357: $i] :
                      ( ~ ( element @ SY357 @ ( powerset @ SV75 ) )
                      | ~ ( subset @ SY355 @ ( subset_complement @ SV75 @ SY357 ) )
                      | ( disjoint @ SY355 @ SY357 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[439]) ).

thf(539,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)],[440]) ).

thf(540,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)],[441]) ).

thf(541,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ! [SX2: $i] :
                        ( ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ SX2 )
                        | ~ ( in @ SX2 @ SX0 ) )
                    | ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ~ ( ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ ( sK11_SY246 @ SX1 @ SX0 ) )
                        | ~ ( in @ ( sK11_SY246 @ SX1 @ SX0 ) @ SX0 ) )
                    | ( in @ ( sK10_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 @ ( sK9_D @ SX2 @ SX1 @ SX0 ) )
                          | ~ ( in @ ( sK9_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[442]) ).

thf(542,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)],[443]) ).

thf(543,plain,
    ! [SV76: $i] :
      ( ( ~ ( ~ ! [SY358: $i,SY359: $i] :
                  ( ~ ( ~ ( ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SV76 )
                          | ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY358 )
                          | ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) )
                      | ~ ~ ( ~ ( ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SV76 )
                                | ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) )
                            | ~ ( ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY358 )
                                | ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) ) ) )
                  | ( SY359
                    = ( set_intersection2 @ SV76 @ SY358 ) ) )
            | ~ ! [SY360: $i,SY361: $i] :
                  ( ( SY361
                   != ( set_intersection2 @ SV76 @ SY360 ) )
                  | ~ ( ~ ! [SY362: $i] :
                            ( ~ ( in @ SY362 @ SV76 )
                            | ~ ( in @ SY362 @ SY360 )
                            | ( in @ SY362 @ SY361 ) )
                      | ~ ~ ( ~ ! [SY363: $i] :
                                  ( ~ ( in @ SY363 @ SY361 )
                                  | ( in @ SY363 @ SV76 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SY361 )
                                  | ( in @ SX3 @ SY360 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[444]) ).

thf(544,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)],[445]) ).

thf(545,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)],[446]) ).

thf(546,plain,
    ! [SV77: $i] :
      ( ( ~ ( ~ ! [SY365: $i,SY366: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                                | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                                 != SV77 ) )
                            | ~ ( ~ ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                                | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                                 != SY365 ) ) )
                      | ~ ( ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                          | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                            = SV77 )
                          | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                            = SY365 ) ) )
                  | ( SY366
                    = ( unordered_pair @ SV77 @ SY365 ) ) )
            | ~ ! [SY367: $i,SY368: $i] :
                  ( ( SY368
                   != ( unordered_pair @ SV77 @ SY367 ) )
                  | ~ ( ~ ! [SY369: $i] :
                            ( ~ ( in @ SY369 @ SY368 )
                            | ( SY369 = SV77 )
                            | ( SY369 = SY367 ) )
                      | ~ ~ ( ~ ! [SY370: $i] :
                                  ( ( SY370 != SV77 )
                                  | ( in @ SY370 @ SY368 ) )
                            | ~ ! [SX3: $i] :
                                  ( ( SX3 != SY367 )
                                  | ( in @ SX3 @ SY368 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[447]) ).

thf(547,plain,
    ( ( ~ ( ( sK2_SY237 != empty_set ) )
      | ( ( complements_of_subsets @ sK1_A @ sK2_SY237 )
       != empty_set ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[448]) ).

thf(548,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ ( singleton @ SX1 ) )
             != SX0 )
            | ~ ( in @ SX1 @ SX0 ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( in @ SX1 @ SX0 )
            | ( ( set_difference @ SX0 @ ( singleton @ SX1 ) )
              = SX0 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[449]) ).

thf(549,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK24_C @ SX1 @ SX0 ) @ SX1 )
                    | ~ ( subset @ ( sK24_C @ SX1 @ SX0 ) @ SX0 ) )
                | ~ ( ( in @ ( sK24_C @ SX1 @ SX0 ) @ SX1 )
                    | ( subset @ ( sK24_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)],[450]) ).

thf(550,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)],[451]) ).

thf(551,plain,
    ! [SV1: $i] :
      ( ( ( singleton @ SV1 )
        = empty_set )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[452]) ).

thf(552,plain,
    ! [SV2: $i,SV78: $i] :
      ( ( ~ ( element @ SV78 @ ( powerset @ SV2 ) )
        | ! [SY372: $i] :
            ( ~ ( in @ SY372 @ SV78 )
            | ( in @ SY372 @ SV2 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[453]) ).

thf(553,plain,
    ! [SV4: $i] :
      ( ( ( ~ ( subset @ SV4 @ empty_set ) )
        = $true )
      | ( ( SV4 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[455]) ).

thf(554,plain,
    ! [SV5: $i] :
      ( ( ( SV5 = empty_set )
        = $true )
      | ( ( ! [SY253: $i] :
              ( ~ ( element @ SY253 @ ( powerset @ SV5 ) )
              | ! [SY254: $i] :
                  ( ~ ( element @ SY254 @ SV5 )
                  | ( in @ SY254 @ SY253 )
                  | ( in @ SY254 @ ( subset_complement @ SV5 @ SY253 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[456]) ).

thf(555,plain,
    ! [SV79: $i,SV6: $i] :
      ( ( ! [SY373: $i] :
            ( ~ ( element @ SY373 @ ( powerset @ SV6 ) )
            | ~ ( in @ SV79 @ ( subset_complement @ SV6 @ SY373 ) )
            | ~ ( in @ SV79 @ SY373 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[457]) ).

thf(556,plain,
    ! [SV8: $i,SV80: $i] :
      ( ( ~ ( element @ SV80 @ ( powerset @ SV8 ) )
        | ( ( subset_complement @ SV8 @ SV80 )
          = ( set_difference @ SV8 @ SV80 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[459]) ).

thf(557,plain,
    ! [SV9: $i,SV81: $i] :
      ( ( ~ ( element @ SV81 @ ( powerset @ SV9 ) )
        | ( element @ ( subset_complement @ SV9 @ SV81 ) @ ( powerset @ SV9 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[460]) ).

thf(558,plain,
    ! [SV10: $i,SV82: $i] :
      ( ( ~ ( element @ SV82 @ ( powerset @ ( powerset @ SV10 ) ) )
        | ( element @ ( complements_of_subsets @ SV10 @ SV82 ) @ ( powerset @ ( powerset @ SV10 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[461]) ).

thf(559,plain,
    ! [SV12: $i] :
      ( ( empty @ ( powerset @ SV12 ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[463]) ).

thf(560,plain,
    ! [SV13: $i,SV83: $i] :
      ( ( ~ ( element @ SV83 @ ( powerset @ SV13 ) )
        | ( ( subset_complement @ SV13 @ ( subset_complement @ SV13 @ SV83 ) )
          = SV83 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[464]) ).

thf(561,plain,
    ! [SV14: $i,SV84: $i] :
      ( ( ~ ( element @ SV84 @ ( powerset @ ( powerset @ SV14 ) ) )
        | ( ( complements_of_subsets @ SV14 @ ( complements_of_subsets @ SV14 @ SV84 ) )
          = SV84 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[465]) ).

thf(562,plain,
    ! [SV85: $i,SV16: $i] :
      ( ( ~ ( in @ SV16 @ SV85 )
        | ( element @ SV16 @ SV85 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[467]) ).

thf(563,plain,
    ! [SV86: $i,SV18: $i] :
      ( ( ~ ( element @ SV18 @ SV86 )
        | ( empty @ SV86 )
        | ( in @ SV18 @ SV86 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[469]) ).

thf(564,plain,
    ! [SV21: $i,SV87: $i] :
      ( ( ! [SY374: $i] :
            ( ~ ( element @ SV87 @ ( powerset @ SY374 ) )
            | ~ ( in @ SV21 @ SV87 )
            | ( element @ SV21 @ SY374 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[472]) ).

thf(565,plain,
    ! [SV22: $i,SV88: $i] :
      ( ( ! [SY375: $i] :
            ( ~ ( element @ SV88 @ ( powerset @ SY375 ) )
            | ~ ( in @ SV22 @ SV88 )
            | ~ ( empty @ SY375 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[473]) ).

thf(566,plain,
    ! [SV23: $i] :
      ( ( ( ~ ( empty @ SV23 ) )
        = $true )
      | ( ( SV23 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[474]) ).

thf(567,plain,
    ! [SV89: $i,SV24: $i] :
      ( ( ~ ( in @ SV24 @ SV89 )
        | ( ( set_union2 @ ( singleton @ SV24 ) @ SV89 )
          = SV89 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[475]) ).

thf(568,plain,
    ! [SV90: $i,SV25: $i] :
      ( ( ~ ( disjoint @ ( singleton @ SV25 ) @ SV90 )
        | ~ ( in @ SV25 @ SV90 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[476]) ).

thf(569,plain,
    ! [SV91: $i,SV26: $i] :
      ( ( ( in @ SV26 @ SV91 )
        | ( disjoint @ ( singleton @ SV26 ) @ SV91 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[477]) ).

thf(570,plain,
    ! [SV92: $i,SV27: $i] :
      ( ( ~ ( subset @ SV27 @ SV92 )
        | ! [SY376: $i] :
            ( ( in @ SY376 @ SV27 )
            | ( subset @ SV27 @ ( set_difference @ SV92 @ ( singleton @ SY376 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[478]) ).

thf(571,plain,
    ! [SV93: $i,SV28: $i] :
      ( ( ~ ( in @ SV28 @ SV93 )
        | ( subset @ SV28 @ ( union @ SV93 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[479]) ).

thf(572,plain,
    ! [SV94: $i,SV29: $i] :
      ( ( ! [SY377: $i,SY378: $i] :
            ( ~ ( subset @ SV29 @ SV94 )
            | ~ ( subset @ SY377 @ SY378 )
            | ( subset @ ( cartesian_product2 @ SV29 @ SY377 ) @ ( cartesian_product2 @ SV94 @ SY378 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[480]) ).

thf(573,plain,
    ! [SV95: $i,SV30: $i] :
      ( ( ~ ( subset @ SV30 @ SV95 )
        | ( ( set_union2 @ SV30 @ SV95 )
          = SV95 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[481]) ).

thf(574,plain,
    ! [SV96: $i,SV31: $i] :
      ( ( subset @ ( set_intersection2 @ SV31 @ SV96 ) @ SV31 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[482]) ).

thf(575,plain,
    ! [SV97: $i,SV32: $i] :
      ( ( ! [SY379: $i] :
            ( ~ ( subset @ SV32 @ SV97 )
            | ~ ( subset @ SV32 @ SY379 )
            | ( subset @ SV32 @ ( set_intersection2 @ SV97 @ SY379 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[483]) ).

thf(576,plain,
    ! [SV98: $i,SV33: $i] :
      ( ( ! [SY380: $i] :
            ( ~ ( subset @ SV33 @ SV98 )
            | ~ ( subset @ SV98 @ SY380 )
            | ( subset @ SV33 @ SY380 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[484]) ).

thf(577,plain,
    ! [SV99: $i,SV34: $i] :
      ( ( ~ ( subset @ SV34 @ SV99 )
        | ! [SY381: $i] : ( subset @ ( set_intersection2 @ SV34 @ SY381 ) @ ( set_intersection2 @ SV99 @ SY381 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[485]) ).

thf(578,plain,
    ! [SV100: $i,SV35: $i] :
      ( ( ~ ( subset @ SV35 @ SV100 )
        | ( ( set_intersection2 @ SV35 @ SV100 )
          = SV35 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[486]) ).

thf(579,plain,
    ! [SV101: $i,SV36: $i] :
      ( ( ~ ( subset @ SV36 @ SV101 )
        | ! [SY382: $i] : ( subset @ ( set_difference @ SV36 @ SY382 ) @ ( set_difference @ SV101 @ SY382 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[487]) ).

thf(580,plain,
    ! [SV102: $i,SV37: $i] :
      ( ( subset @ ( set_difference @ SV37 @ SV102 ) @ SV37 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[488]) ).

thf(581,plain,
    ! [SV103: $i,SV38: $i] :
      ( ( ( set_union2 @ SV38 @ ( set_difference @ SV103 @ SV38 ) )
        = ( set_union2 @ SV38 @ SV103 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[489]) ).

thf(582,plain,
    ! [SV104: $i,SV39: $i] :
      ( ( ( set_difference @ ( set_union2 @ SV39 @ SV104 ) @ SV104 )
        = ( set_difference @ SV39 @ SV104 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[490]) ).

thf(583,plain,
    ! [SV105: $i,SV40: $i] :
      ( ( ~ ( subset @ SV40 @ SV105 )
        | ( SV105
          = ( set_union2 @ SV40 @ ( set_difference @ SV105 @ SV40 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[491]) ).

thf(584,plain,
    ! [SV106: $i,SV41: $i] :
      ( ( ~ ( in @ SV41 @ SV106 )
        | ( ( set_union2 @ ( singleton @ SV41 ) @ SV106 )
          = SV106 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[492]) ).

thf(585,plain,
    ! [SV107: $i,SV42: $i] :
      ( ( ( set_difference @ SV42 @ ( set_difference @ SV42 @ SV107 ) )
        = ( set_intersection2 @ SV42 @ SV107 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[493]) ).

thf(586,plain,
    ! [SV43: $i,SV108: $i] :
      ( ( ~ ( proper_subset @ SV108 @ SV43 )
        | ~ ( subset @ SV43 @ SV108 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[494]) ).

thf(587,plain,
    ! [SV44: $i,SV109: $i] :
      ( ( ! [SY383: $i] :
            ( ~ ( disjoint @ SV109 @ SY383 )
            | ~ ( subset @ SV44 @ SV109 )
            | ( disjoint @ SV44 @ SY383 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[495]) ).

thf(588,plain,
    ! [SV110: $i,SV46: $i] :
      ( ( ~ ( subset @ ( singleton @ SV46 ) @ ( singleton @ SV110 ) )
        | ( SV46 = SV110 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[497]) ).

thf(589,plain,
    ! [SV111: $i,SV47: $i] :
      ( ( subset @ SV47 @ ( set_union2 @ SV47 @ SV111 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[498]) ).

thf(590,plain,
    ! [SV112: $i,SV48: $i] :
      ( ( ! [SY384: $i] :
            ( ~ ( subset @ SV48 @ SV112 )
            | ~ ( subset @ SY384 @ SV112 )
            | ( subset @ ( set_union2 @ SV48 @ SY384 ) @ SV112 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[499]) ).

thf(591,plain,
    ! [SV113: $i,SV49: $i] :
      ( ( ! [SY385: $i] :
            ( ( singleton @ SV49 )
           != ( unordered_pair @ SV113 @ SY385 ) )
        | ( SV49 = SV113 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[500]) ).

thf(592,plain,
    ! [SV114: $i,SV50: $i] :
      ( ( ~ ( in @ SV50 @ SV114 )
        | ( subset @ SV50 @ ( union @ SV114 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[501]) ).

thf(593,plain,
    ! [SV115: $i,SV51: $i] :
      ( ( ! [SY386: $i] :
            ( ( ( singleton @ SV51 )
             != ( unordered_pair @ SV115 @ SY386 ) )
            | ( SV115 = SY386 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[502]) ).

thf(594,plain,
    ! [SV116: $i,SV52: $i] :
      ( ( ~ ( in @ SV52 @ SV116 )
        | ~ ( in @ SV116 @ SV52 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[503]) ).

thf(595,plain,
    ! [SV117: $i,SV53: $i] :
      ( ( ( set_union2 @ SV53 @ SV117 )
        = ( set_union2 @ SV117 @ SV53 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[504]) ).

thf(596,plain,
    ! [SV118: $i,SV54: $i] :
      ( ( ( set_intersection2 @ SV54 @ SV118 )
        = ( set_intersection2 @ SV118 @ SV54 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[505]) ).

thf(597,plain,
    ! [SV119: $i,SV55: $i] :
      ( ( ~ ( empty @ ( ordered_pair @ SV55 @ SV119 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[506]) ).

thf(598,plain,
    ! [SV56: $i] :
      ( ( ( empty @ SV56 )
        = $true )
      | ( ( ! [SY310: $i] :
              ~ ( empty @ ( set_union2 @ SV56 @ SY310 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[507]) ).

thf(599,plain,
    ! [SV57: $i] :
      ( ( ( empty @ SV57 )
        = $true )
      | ( ( ! [SY311: $i] :
              ~ ( empty @ ( set_union2 @ SY311 @ SV57 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[508]) ).

thf(600,plain,
    ! [SV120: $i,SV61: $i] :
      ( ( ~ ( disjoint @ SV61 @ SV120 )
        | ( disjoint @ SV120 @ SV61 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[513]) ).

thf(601,plain,
    ! [SV62: $i,SV121: $i] :
      ( ( ~ ( empty @ SV121 )
        | ~ ( in @ SV62 @ SV121 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[514]) ).

thf(602,plain,
    ! [SV122: $i,SV63: $i] :
      ( ( ( SV63 = SV122 )
        | ~ ( empty @ SV63 )
        | ~ ( empty @ SV122 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[515]) ).

thf(603,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( in @ ( sK25_B @ SX0 ) @ SX0 )
            | ( SX0 = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[516]) ).

thf(604,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] :
                ~ ( in @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[516]) ).

thf(605,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 = SX1 )
            | ~ ( subset @ SX0 @ SX1 )
            | ( proper_subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[517]) ).

thf(606,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)],[517]) ).

thf(607,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
            | ( SX0 = empty_set )
            | ( SX0
              = ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[518]) ).

thf(608,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)],[518]) ).

thf(609,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( element @ SX0 @ ( powerset @ SX1 ) )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[519]) ).

thf(610,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( element @ SX0 @ ( powerset @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[519]) ).

thf(611,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ~ ( subset @ SX1 @ SX0 )
            | ( SX0 = SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[520]) ).

thf(612,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)],[520]) ).

thf(613,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
                | ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) )
            | ~ ( ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
                | ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) ) )
        | ( SV64 = SV123 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[521]) ).

thf(614,plain,
    ! [SV65: $i] :
      ( ( ~ ! [SY316: $i,SY317: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                            | ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SV65 ) )
                        | ~ ( ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                            | ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY316 ) ) )
                  | ~ ( ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                      | ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SV65 )
                      | ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY316 ) ) )
              | ( SY317
                = ( set_union2 @ SV65 @ SY316 ) ) )
        | ~ ! [SY318: $i,SY319: $i] :
              ( ( SY319
               != ( set_union2 @ SV65 @ SY318 ) )
              | ~ ( ~ ! [SY320: $i] :
                        ( ~ ( in @ SY320 @ SY319 )
                        | ( in @ SY320 @ SV65 )
                        | ( in @ SY320 @ SY318 ) )
                  | ~ ~ ( ~ ! [SY321: $i] :
                              ( ~ ( in @ SY321 @ SV65 )
                              | ( in @ SY321 @ SY319 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY318 )
                              | ( in @ SX3 @ SY319 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[522]) ).

thf(615,plain,
    ! [SV66: $i] :
      ( ( ~ ( element @ ( sK20_B @ SV66 ) @ ( powerset @ SV66 ) )
        | ~ ( empty @ ( sK20_B @ SV66 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[523]) ).

thf(616,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( in @ SX0 @ SX1 )
            | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[524]) ).

thf(617,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
            | ( in @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[524]) ).

thf(618,plain,
    ! [SV67: $i] :
      ( ( ~ ! [SY323: $i] :
              ( ~ ( subset @ SV67 @ SY323 )
              | ! [SY324: $i] : ( subset @ ( cartesian_product2 @ SV67 @ SY324 ) @ ( cartesian_product2 @ SY323 @ SY324 ) ) )
        | ~ ! [SY325: $i] :
              ( ~ ( subset @ SV67 @ SY325 )
              | ! [SY326: $i] : ( subset @ ( cartesian_product2 @ SY326 @ SV67 ) @ ( cartesian_product2 @ SY326 @ SY325 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[525]) ).

thf(619,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( in @ ( sK13_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ~ ( in @ ( sK13_C @ SX1 @ SX0 ) @ SX1 ) )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[526]) ).

thf(620,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ! [SX2: $i] :
                ( ~ ( in @ SX2 @ SX0 )
                | ( in @ SX2 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[526]) ).

thf(621,plain,
    ( ( ~ ~ ( ~ ! [SX0: $i] :
                  ( ( empty @ SX0 )
                  | ! [SX1: $i] :
                      ( ~ ( element @ SX1 @ SX0 )
                      | ( in @ SX1 @ SX0 ) ) )
            | ~ ! [SX0: $i] :
                  ( ( empty @ SX0 )
                  | ! [SX1: $i] :
                      ( ~ ( in @ SX1 @ SX0 )
                      | ( element @ SX1 @ SX0 ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[527]) ).

thf(622,plain,
    ( ( ~ ~ ( ~ ! [SX0: $i] :
                  ( ~ ( empty @ SX0 )
                  | ! [SX1: $i] :
                      ( ~ ( element @ SX1 @ SX0 )
                      | ( empty @ SX1 ) ) )
            | ~ ! [SX0: $i] :
                  ( ~ ( empty @ SX0 )
                  | ! [SX1: $i] :
                      ( ~ ( empty @ SX1 )
                      | ( element @ SX1 @ SX0 ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[527]) ).

thf(623,plain,
    ! [SV68: $i] :
      ( ( ~ ! [SY327: $i] :
              ( ~ ( subset @ SY327 @ ( sK19_B @ SV68 ) )
              | ( are_equipotent @ SY327 @ ( sK19_B @ SV68 ) )
              | ( in @ SY327 @ ( sK19_B @ SV68 ) ) )
        | ~ ~ ( ~ ! [SY328: $i] :
                    ( ~ ( in @ SY328 @ ( sK19_B @ SV68 ) )
                    | ( in @ ( powerset @ SY328 ) @ ( sK19_B @ SV68 ) ) )
              | ~ ~ ( ~ ! [SY329: $i,SY330: $i] :
                          ( ~ ( in @ SY329 @ ( sK19_B @ SV68 ) )
                          | ~ ( subset @ SY330 @ SY329 )
                          | ( in @ SY330 @ ( sK19_B @ SV68 ) ) )
                    | ~ ( in @ SV68 @ ( sK19_B @ SV68 ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[528]) ).

thf(624,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ( ( sK16_C @ SX1 @ SX0 )
                     != SX0 )
                    | ~ ( in @ ( sK16_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ( ( sK16_C @ SX1 @ SX0 )
                      = SX0 )
                    | ( in @ ( sK16_C @ SX1 @ SX0 ) @ SX1 ) ) )
            | ( SX1
              = ( singleton @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[529]) ).

thf(625,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)],[529]) ).

thf(626,plain,
    ! [SV69: $i,SV124: $i] :
      ( ( ~ ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        | ~ ( ~ ! [SY387: $i] :
                  ( ~ ( element @ SY387 @ ( powerset @ ( powerset @ SV69 ) ) )
                  | ~ ( ~ ( element @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
                      | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                                | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) )
                            | ~ ( ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                                | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
                  | ( SY387
                    = ( complements_of_subsets @ SV69 @ SV124 ) ) )
            | ~ ! [SY388: $i] :
                  ( ~ ( element @ SY388 @ ( powerset @ ( powerset @ SV69 ) ) )
                  | ( SY388
                   != ( complements_of_subsets @ SV69 @ SV124 ) )
                  | ~ ( ~ ! [SY389: $i] :
                            ( ~ ( element @ SY389 @ ( powerset @ SV69 ) )
                            | ~ ( in @ SY389 @ SY388 )
                            | ( in @ ( subset_complement @ SV69 @ SY389 ) @ SV124 ) )
                      | ~ ! [SY390: $i] :
                            ( ~ ( element @ SY390 @ ( powerset @ SV69 ) )
                            | ~ ( in @ ( subset_complement @ SV69 @ SY390 ) @ SV124 )
                            | ( in @ SY390 @ SY388 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[530]) ).

thf(627,plain,
    ! [SV70: $i] :
      ( ( ~ ! [SY336: $i,SY337: $i] :
              ( ~ ( in @ SV70 @ SY337 )
              | ~ ( in @ SY336 @ SY337 )
              | ( subset @ ( unordered_pair @ SV70 @ SY336 ) @ SY337 ) )
        | ~ ~ ( ~ ! [SY338: $i,SY339: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV70 @ SY338 ) @ SY339 )
                    | ( in @ SV70 @ SY339 ) )
              | ~ ! [SY340: $i,SY341: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV70 @ SY340 ) @ SY341 )
                    | ( in @ SY340 @ SY341 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[531]) ).

thf(628,plain,
    ! [SV71: $i] :
      ( ( ~ ! [SY342: $i] :
              ( ~ ( subset @ SY342 @ ( sK3_B @ SV71 ) )
              | ( are_equipotent @ SY342 @ ( sK3_B @ SV71 ) )
              | ( in @ SY342 @ ( sK3_B @ SV71 ) ) )
        | ~ ~ ( ~ ! [SY343: $i] :
                    ( ~ ( ~ ! [SY344: $i] :
                              ( ~ ( subset @ SY344 @ SY343 )
                              | ( in @ SY344 @ ( sK4_SY240 @ SY343 @ SV71 ) ) )
                        | ~ ( in @ ( sK4_SY240 @ SY343 @ SV71 ) @ ( sK3_B @ SV71 ) ) )
                    | ~ ( in @ SY343 @ ( sK3_B @ SV71 ) ) )
              | ~ ~ ( ~ ! [SY345: $i,SY346: $i] :
                          ( ~ ( in @ SY345 @ ( sK3_B @ SV71 ) )
                          | ~ ( subset @ SY346 @ SY345 )
                          | ( in @ SY346 @ ( sK3_B @ SV71 ) ) )
                    | ~ ( in @ SV71 @ ( sK3_B @ SV71 ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[532]) ).

thf(629,plain,
    ! [SV72: $i] :
      ( ( ~ ! [SY347: $i,SY348: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SV72 )
                      | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY347 )
                      | ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SV72 )
                            | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) )
                        | ~ ( ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY347 )
                            | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) ) ) )
              | ( SY348
                = ( set_difference @ SV72 @ SY347 ) ) )
        | ~ ! [SY349: $i,SY350: $i] :
              ( ( SY350
               != ( set_difference @ SV72 @ SY349 ) )
              | ~ ( ~ ! [SY351: $i] :
                        ( ~ ( in @ SY351 @ SV72 )
                        | ( in @ SY351 @ SY349 )
                        | ( in @ SY351 @ SY350 ) )
                  | ~ ~ ( ~ ! [SY352: $i] :
                              ( ~ ( in @ SY352 @ SY350 )
                              | ( in @ SY352 @ SV72 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY350 )
                              | ~ ( in @ SX3 @ SY349 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[533]) ).

thf(630,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ( in @ ( sK17_C @ SX1 @ SX0 ) @ ( set_intersection2 @ SX0 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[534]) ).

thf(631,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ! [SX2: $i] :
                ~ ( in @ SX2 @ ( set_intersection2 @ SX0 @ SX1 ) )
            | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[534]) ).

thf(632,plain,
    ! [SV73: $i,SV125: $i] :
      ( ( ~ ( ~ ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV73 )
            | ~ ~ ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV125 ) )
        | ( element @ SV73 @ ( powerset @ SV125 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[535]) ).

thf(633,plain,
    ! [SV74: $i] :
      ( ( ( empty @ SV74 )
        = $true )
      | ( ( ~ ( ~ ( element @ ( sK21_B @ SV74 ) @ ( powerset @ SV74 ) )
              | ~ ~ ( empty @ ( sK21_B @ SV74 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[536]) ).

thf(634,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( disjoint @ SX0 @ SX1 )
            | ~ ( ~ ( in @ ( sK18_C @ SX1 @ SX0 ) @ SX0 )
                | ~ ( in @ ( sK18_C @ SX1 @ SX0 ) @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[537]) ).

thf(635,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ! [SX2: $i] :
                ( ~ ( in @ SX2 @ SX0 )
                | ~ ( in @ SX2 @ SX1 ) )
            | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[537]) ).

thf(636,plain,
    ! [SV75: $i,SV126: $i] :
      ( ( ~ ( element @ SV126 @ ( powerset @ SV75 ) )
        | ~ ( ~ ! [SY391: $i] :
                  ( ~ ( element @ SY391 @ ( powerset @ SV75 ) )
                  | ~ ( disjoint @ SV126 @ SY391 )
                  | ( subset @ SV126 @ ( subset_complement @ SV75 @ SY391 ) ) )
            | ~ ! [SY392: $i] :
                  ( ~ ( element @ SY392 @ ( powerset @ SV75 ) )
                  | ~ ( subset @ SV126 @ ( subset_complement @ SV75 @ SY392 ) )
                  | ( disjoint @ SV126 @ SY392 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[538]) ).

thf(637,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != empty_set )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[539]) ).

thf(638,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[539]) ).

thf(639,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_intersection2 @ SX0 @ SX1 )
             != empty_set )
            | ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[540]) ).

thf(640,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( disjoint @ SX0 @ SX1 )
            | ( ( set_intersection2 @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[540]) ).

thf(641,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ! [SX2: $i] :
                        ( ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ SX2 )
                        | ~ ( in @ SX2 @ SX0 ) )
                    | ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ SX1 ) )
                | ~ ( ~ ( ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ ( sK11_SY246 @ SX1 @ SX0 ) )
                        | ~ ( in @ ( sK11_SY246 @ SX1 @ SX0 ) @ SX0 ) )
                    | ( in @ ( sK10_C @ SX1 @ SX0 ) @ SX1 ) ) )
            | ( SX1
              = ( union @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[541]) ).

thf(642,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 @ ( sK9_D @ SX2 @ SX1 @ SX0 ) )
                          | ~ ( in @ ( sK9_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[541]) ).

thf(643,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != empty_set )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[542]) ).

thf(644,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[542]) ).

thf(645,plain,
    ! [SV76: $i] :
      ( ( ~ ! [SY358: $i,SY359: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SV76 )
                      | ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY358 )
                      | ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SV76 )
                            | ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) )
                        | ~ ( ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY358 )
                            | ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) ) ) )
              | ( SY359
                = ( set_intersection2 @ SV76 @ SY358 ) ) )
        | ~ ! [SY360: $i,SY361: $i] :
              ( ( SY361
               != ( set_intersection2 @ SV76 @ SY360 ) )
              | ~ ( ~ ! [SY362: $i] :
                        ( ~ ( in @ SY362 @ SV76 )
                        | ~ ( in @ SY362 @ SY360 )
                        | ( in @ SY362 @ SY361 ) )
                  | ~ ~ ( ~ ! [SY363: $i] :
                              ( ~ ( in @ SY363 @ SY361 )
                              | ( in @ SY363 @ SV76 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY361 )
                              | ( in @ SX3 @ SY360 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[543]) ).

thf(646,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( in @ SX0 @ SX1 )
            | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[544]) ).

thf(647,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
            | ( in @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[544]) ).

thf(648,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
            | ( SX0 = empty_set )
            | ( SX0
              = ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[545]) ).

thf(649,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)],[545]) ).

thf(650,plain,
    ! [SV77: $i] :
      ( ( ~ ! [SY365: $i,SY366: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                            | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                             != SV77 ) )
                        | ~ ( ~ ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                            | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                             != SY365 ) ) )
                  | ~ ( ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                      | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                        = SV77 )
                      | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                        = SY365 ) ) )
              | ( SY366
                = ( unordered_pair @ SV77 @ SY365 ) ) )
        | ~ ! [SY367: $i,SY368: $i] :
              ( ( SY368
               != ( unordered_pair @ SV77 @ SY367 ) )
              | ~ ( ~ ! [SY369: $i] :
                        ( ~ ( in @ SY369 @ SY368 )
                        | ( SY369 = SV77 )
                        | ( SY369 = SY367 ) )
                  | ~ ~ ( ~ ! [SY370: $i] :
                              ( ( SY370 != SV77 )
                              | ( in @ SY370 @ SY368 ) )
                        | ~ ! [SX3: $i] :
                              ( ( SX3 != SY367 )
                              | ( in @ SX3 @ SY368 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[546]) ).

thf(651,plain,
    ( ( ~ ( ( sK2_SY237 != empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[547]) ).

thf(652,plain,
    ( ( ( ( complements_of_subsets @ sK1_A @ sK2_SY237 )
       != empty_set ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[547]) ).

thf(653,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ ( singleton @ SX1 ) )
             != SX0 )
            | ~ ( in @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[548]) ).

thf(654,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( in @ SX1 @ SX0 )
            | ( ( set_difference @ SX0 @ ( singleton @ SX1 ) )
              = SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[548]) ).

thf(655,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK24_C @ SX1 @ SX0 ) @ SX1 )
                    | ~ ( subset @ ( sK24_C @ SX1 @ SX0 ) @ SX0 ) )
                | ~ ( ( in @ ( sK24_C @ SX1 @ SX0 ) @ SX1 )
                    | ( subset @ ( sK24_C @ SX1 @ SX0 ) @ SX0 ) ) )
            | ( SX1
              = ( powerset @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[549]) ).

thf(656,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)],[549]) ).

thf(657,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( set_difference @ SX0 @ SX1 )
             != SX0 )
            | ( disjoint @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[550]) ).

thf(658,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( disjoint @ SX0 @ SX1 )
            | ( ( set_difference @ SX0 @ SX1 )
              = SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[550]) ).

thf(659,plain,
    ! [SV2: $i,SV78: $i] :
      ( ( ( ~ ( element @ SV78 @ ( powerset @ SV2 ) ) )
        = $true )
      | ( ( ! [SY372: $i] :
              ( ~ ( in @ SY372 @ SV78 )
              | ( in @ SY372 @ SV2 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[552]) ).

thf(660,plain,
    ! [SV4: $i] :
      ( ( ( subset @ SV4 @ empty_set )
        = $false )
      | ( ( SV4 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[553]) ).

thf(661,plain,
    ! [SV5: $i,SV127: $i] :
      ( ( ( ~ ( element @ SV127 @ ( powerset @ SV5 ) )
          | ! [SY393: $i] :
              ( ~ ( element @ SY393 @ SV5 )
              | ( in @ SY393 @ SV127 )
              | ( in @ SY393 @ ( subset_complement @ SV5 @ SV127 ) ) ) )
        = $true )
      | ( ( SV5 = empty_set )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[554]) ).

thf(662,plain,
    ! [SV79: $i,SV6: $i,SV128: $i] :
      ( ( ~ ( element @ SV128 @ ( powerset @ SV6 ) )
        | ~ ( in @ SV79 @ ( subset_complement @ SV6 @ SV128 ) )
        | ~ ( in @ SV79 @ SV128 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[555]) ).

thf(663,plain,
    ! [SV8: $i,SV80: $i] :
      ( ( ( ~ ( element @ SV80 @ ( powerset @ SV8 ) ) )
        = $true )
      | ( ( ( subset_complement @ SV8 @ SV80 )
          = ( set_difference @ SV8 @ SV80 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[556]) ).

thf(664,plain,
    ! [SV9: $i,SV81: $i] :
      ( ( ( ~ ( element @ SV81 @ ( powerset @ SV9 ) ) )
        = $true )
      | ( ( element @ ( subset_complement @ SV9 @ SV81 ) @ ( powerset @ SV9 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[557]) ).

thf(665,plain,
    ! [SV10: $i,SV82: $i] :
      ( ( ( ~ ( element @ SV82 @ ( powerset @ ( powerset @ SV10 ) ) ) )
        = $true )
      | ( ( element @ ( complements_of_subsets @ SV10 @ SV82 ) @ ( powerset @ ( powerset @ SV10 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[558]) ).

thf(666,plain,
    ! [SV13: $i,SV83: $i] :
      ( ( ( ~ ( element @ SV83 @ ( powerset @ SV13 ) ) )
        = $true )
      | ( ( ( subset_complement @ SV13 @ ( subset_complement @ SV13 @ SV83 ) )
          = SV83 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[560]) ).

thf(667,plain,
    ! [SV14: $i,SV84: $i] :
      ( ( ( ~ ( element @ SV84 @ ( powerset @ ( powerset @ SV14 ) ) ) )
        = $true )
      | ( ( ( complements_of_subsets @ SV14 @ ( complements_of_subsets @ SV14 @ SV84 ) )
          = SV84 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[561]) ).

thf(668,plain,
    ! [SV85: $i,SV16: $i] :
      ( ( ( ~ ( in @ SV16 @ SV85 ) )
        = $true )
      | ( ( element @ SV16 @ SV85 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[562]) ).

thf(669,plain,
    ! [SV86: $i,SV18: $i] :
      ( ( ( ~ ( element @ SV18 @ SV86 ) )
        = $true )
      | ( ( ( empty @ SV86 )
          | ( in @ SV18 @ SV86 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[563]) ).

thf(670,plain,
    ! [SV21: $i,SV129: $i,SV87: $i] :
      ( ( ~ ( element @ SV87 @ ( powerset @ SV129 ) )
        | ~ ( in @ SV21 @ SV87 )
        | ( element @ SV21 @ SV129 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[564]) ).

thf(671,plain,
    ! [SV22: $i,SV130: $i,SV88: $i] :
      ( ( ~ ( element @ SV88 @ ( powerset @ SV130 ) )
        | ~ ( in @ SV22 @ SV88 )
        | ~ ( empty @ SV130 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[565]) ).

thf(672,plain,
    ! [SV23: $i] :
      ( ( ( empty @ SV23 )
        = $false )
      | ( ( SV23 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[566]) ).

thf(673,plain,
    ! [SV89: $i,SV24: $i] :
      ( ( ( ~ ( in @ SV24 @ SV89 ) )
        = $true )
      | ( ( ( set_union2 @ ( singleton @ SV24 ) @ SV89 )
          = SV89 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[567]) ).

thf(674,plain,
    ! [SV90: $i,SV25: $i] :
      ( ( ( ~ ( disjoint @ ( singleton @ SV25 ) @ SV90 ) )
        = $true )
      | ( ( ~ ( in @ SV25 @ SV90 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[568]) ).

thf(675,plain,
    ! [SV91: $i,SV26: $i] :
      ( ( ( in @ SV26 @ SV91 )
        = $true )
      | ( ( disjoint @ ( singleton @ SV26 ) @ SV91 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[569]) ).

thf(676,plain,
    ! [SV92: $i,SV27: $i] :
      ( ( ( ~ ( subset @ SV27 @ SV92 ) )
        = $true )
      | ( ( ! [SY376: $i] :
              ( ( in @ SY376 @ SV27 )
              | ( subset @ SV27 @ ( set_difference @ SV92 @ ( singleton @ SY376 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[570]) ).

thf(677,plain,
    ! [SV93: $i,SV28: $i] :
      ( ( ( ~ ( in @ SV28 @ SV93 ) )
        = $true )
      | ( ( subset @ SV28 @ ( union @ SV93 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[571]) ).

thf(678,plain,
    ! [SV131: $i,SV94: $i,SV29: $i] :
      ( ( ! [SY394: $i] :
            ( ~ ( subset @ SV29 @ SV94 )
            | ~ ( subset @ SV131 @ SY394 )
            | ( subset @ ( cartesian_product2 @ SV29 @ SV131 ) @ ( cartesian_product2 @ SV94 @ SY394 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[572]) ).

thf(679,plain,
    ! [SV95: $i,SV30: $i] :
      ( ( ( ~ ( subset @ SV30 @ SV95 ) )
        = $true )
      | ( ( ( set_union2 @ SV30 @ SV95 )
          = SV95 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[573]) ).

thf(680,plain,
    ! [SV132: $i,SV97: $i,SV32: $i] :
      ( ( ~ ( subset @ SV32 @ SV97 )
        | ~ ( subset @ SV32 @ SV132 )
        | ( subset @ SV32 @ ( set_intersection2 @ SV97 @ SV132 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[575]) ).

thf(681,plain,
    ! [SV133: $i,SV98: $i,SV33: $i] :
      ( ( ~ ( subset @ SV33 @ SV98 )
        | ~ ( subset @ SV98 @ SV133 )
        | ( subset @ SV33 @ SV133 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[576]) ).

thf(682,plain,
    ! [SV99: $i,SV34: $i] :
      ( ( ( ~ ( subset @ SV34 @ SV99 ) )
        = $true )
      | ( ( ! [SY381: $i] : ( subset @ ( set_intersection2 @ SV34 @ SY381 ) @ ( set_intersection2 @ SV99 @ SY381 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[577]) ).

thf(683,plain,
    ! [SV100: $i,SV35: $i] :
      ( ( ( ~ ( subset @ SV35 @ SV100 ) )
        = $true )
      | ( ( ( set_intersection2 @ SV35 @ SV100 )
          = SV35 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[578]) ).

thf(684,plain,
    ! [SV101: $i,SV36: $i] :
      ( ( ( ~ ( subset @ SV36 @ SV101 ) )
        = $true )
      | ( ( ! [SY382: $i] : ( subset @ ( set_difference @ SV36 @ SY382 ) @ ( set_difference @ SV101 @ SY382 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[579]) ).

thf(685,plain,
    ! [SV105: $i,SV40: $i] :
      ( ( ( ~ ( subset @ SV40 @ SV105 ) )
        = $true )
      | ( ( SV105
          = ( set_union2 @ SV40 @ ( set_difference @ SV105 @ SV40 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[583]) ).

thf(686,plain,
    ! [SV106: $i,SV41: $i] :
      ( ( ( ~ ( in @ SV41 @ SV106 ) )
        = $true )
      | ( ( ( set_union2 @ ( singleton @ SV41 ) @ SV106 )
          = SV106 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[584]) ).

thf(687,plain,
    ! [SV43: $i,SV108: $i] :
      ( ( ( ~ ( proper_subset @ SV108 @ SV43 ) )
        = $true )
      | ( ( ~ ( subset @ SV43 @ SV108 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[586]) ).

thf(688,plain,
    ! [SV44: $i,SV134: $i,SV109: $i] :
      ( ( ~ ( disjoint @ SV109 @ SV134 )
        | ~ ( subset @ SV44 @ SV109 )
        | ( disjoint @ SV44 @ SV134 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[587]) ).

thf(689,plain,
    ! [SV110: $i,SV46: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV46 ) @ ( singleton @ SV110 ) ) )
        = $true )
      | ( ( SV46 = SV110 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[588]) ).

thf(690,plain,
    ! [SV135: $i,SV112: $i,SV48: $i] :
      ( ( ~ ( subset @ SV48 @ SV112 )
        | ~ ( subset @ SV135 @ SV112 )
        | ( subset @ ( set_union2 @ SV48 @ SV135 ) @ SV112 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[590]) ).

thf(691,plain,
    ! [SV113: $i,SV49: $i] :
      ( ( ( ! [SY385: $i] :
              ( ( singleton @ SV49 )
             != ( unordered_pair @ SV113 @ SY385 ) ) )
        = $true )
      | ( ( SV49 = SV113 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[591]) ).

thf(692,plain,
    ! [SV114: $i,SV50: $i] :
      ( ( ( ~ ( in @ SV50 @ SV114 ) )
        = $true )
      | ( ( subset @ SV50 @ ( union @ SV114 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[592]) ).

thf(693,plain,
    ! [SV136: $i,SV115: $i,SV51: $i] :
      ( ( ( ( singleton @ SV51 )
         != ( unordered_pair @ SV115 @ SV136 ) )
        | ( SV115 = SV136 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[593]) ).

thf(694,plain,
    ! [SV116: $i,SV52: $i] :
      ( ( ( ~ ( in @ SV52 @ SV116 ) )
        = $true )
      | ( ( ~ ( in @ SV116 @ SV52 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[594]) ).

thf(695,plain,
    ! [SV119: $i,SV55: $i] :
      ( ( empty @ ( ordered_pair @ SV55 @ SV119 ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[597]) ).

thf(696,plain,
    ! [SV137: $i,SV56: $i] :
      ( ( ( ~ ( empty @ ( set_union2 @ SV56 @ SV137 ) ) )
        = $true )
      | ( ( empty @ SV56 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[598]) ).

thf(697,plain,
    ! [SV57: $i,SV138: $i] :
      ( ( ( ~ ( empty @ ( set_union2 @ SV138 @ SV57 ) ) )
        = $true )
      | ( ( empty @ SV57 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[599]) ).

thf(698,plain,
    ! [SV120: $i,SV61: $i] :
      ( ( ( ~ ( disjoint @ SV61 @ SV120 ) )
        = $true )
      | ( ( disjoint @ SV120 @ SV61 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[600]) ).

thf(699,plain,
    ! [SV62: $i,SV121: $i] :
      ( ( ( ~ ( empty @ SV121 ) )
        = $true )
      | ( ( ~ ( in @ SV62 @ SV121 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[601]) ).

thf(700,plain,
    ! [SV122: $i,SV63: $i] :
      ( ( ( ( SV63 = SV122 )
          | ~ ( empty @ SV63 ) )
        = $true )
      | ( ( ~ ( empty @ SV122 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[602]) ).

thf(701,plain,
    ( ( ! [SX0: $i] :
          ( ( in @ ( sK25_B @ SX0 ) @ SX0 )
          | ( SX0 = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[603]) ).

thf(702,plain,
    ( ( ! [SX0: $i] :
          ( ( SX0 != empty_set )
          | ! [SX1: $i] :
              ~ ( in @ SX1 @ SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[604]) ).

thf(703,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0 = SX1 )
          | ~ ( subset @ SX0 @ SX1 )
          | ( proper_subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[605]) ).

thf(704,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)],[606]) ).

thf(705,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
          | ( SX0 = empty_set )
          | ( SX0
            = ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[607]) ).

thf(706,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)],[608]) ).

thf(707,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( element @ SX0 @ ( powerset @ SX1 ) )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[609]) ).

thf(708,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ( element @ SX0 @ ( powerset @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[610]) ).

thf(709,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ~ ( subset @ SX1 @ SX0 )
          | ( SX0 = SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[611]) ).

thf(710,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)],[612]) ).

thf(711,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
                  | ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) )
              | ~ ( ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
                  | ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) ) ) )
        = $true )
      | ( ( SV64 = SV123 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[613]) ).

thf(712,plain,
    ! [SV65: $i] :
      ( ( ~ ! [SY316: $i,SY317: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                            | ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SV65 ) )
                        | ~ ( ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                            | ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY316 ) ) )
                  | ~ ( ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                      | ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SV65 )
                      | ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY316 ) ) )
              | ( SY317
                = ( set_union2 @ SV65 @ SY316 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[614]) ).

thf(713,plain,
    ! [SV65: $i] :
      ( ( ~ ! [SY318: $i,SY319: $i] :
              ( ( SY319
               != ( set_union2 @ SV65 @ SY318 ) )
              | ~ ( ~ ! [SY320: $i] :
                        ( ~ ( in @ SY320 @ SY319 )
                        | ( in @ SY320 @ SV65 )
                        | ( in @ SY320 @ SY318 ) )
                  | ~ ~ ( ~ ! [SY321: $i] :
                              ( ~ ( in @ SY321 @ SV65 )
                              | ( in @ SY321 @ SY319 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY318 )
                              | ( in @ SX3 @ SY319 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[614]) ).

thf(714,plain,
    ! [SV66: $i] :
      ( ( ~ ( element @ ( sK20_B @ SV66 ) @ ( powerset @ SV66 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[615]) ).

thf(715,plain,
    ! [SV66: $i] :
      ( ( ~ ( empty @ ( sK20_B @ SV66 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[615]) ).

thf(716,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( in @ SX0 @ SX1 )
          | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[616]) ).

thf(717,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
          | ( in @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[617]) ).

thf(718,plain,
    ! [SV67: $i] :
      ( ( ~ ! [SY323: $i] :
              ( ~ ( subset @ SV67 @ SY323 )
              | ! [SY324: $i] : ( subset @ ( cartesian_product2 @ SV67 @ SY324 ) @ ( cartesian_product2 @ SY323 @ SY324 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[618]) ).

thf(719,plain,
    ! [SV67: $i] :
      ( ( ~ ! [SY325: $i] :
              ( ~ ( subset @ SV67 @ SY325 )
              | ! [SY326: $i] : ( subset @ ( cartesian_product2 @ SY326 @ SV67 ) @ ( cartesian_product2 @ SY326 @ SY325 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[618]) ).

thf(720,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( in @ ( sK13_C @ SX1 @ SX0 ) @ SX0 )
              | ~ ~ ( in @ ( sK13_C @ SX1 @ SX0 ) @ SX1 ) )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[619]) ).

thf(721,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ! [SX2: $i] :
              ( ~ ( in @ SX2 @ SX0 )
              | ( in @ SX2 @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[620]) ).

thf(722,plain,
    ( ( ~ ( ~ ! [SX0: $i] :
                ( ( empty @ SX0 )
                | ! [SX1: $i] :
                    ( ~ ( element @ SX1 @ SX0 )
                    | ( in @ SX1 @ SX0 ) ) )
          | ~ ! [SX0: $i] :
                ( ( empty @ SX0 )
                | ! [SX1: $i] :
                    ( ~ ( in @ SX1 @ SX0 )
                    | ( element @ SX1 @ SX0 ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[621]) ).

thf(723,plain,
    ( ( ~ ( ~ ! [SX0: $i] :
                ( ~ ( empty @ SX0 )
                | ! [SX1: $i] :
                    ( ~ ( element @ SX1 @ SX0 )
                    | ( empty @ SX1 ) ) )
          | ~ ! [SX0: $i] :
                ( ~ ( empty @ SX0 )
                | ! [SX1: $i] :
                    ( ~ ( empty @ SX1 )
                    | ( element @ SX1 @ SX0 ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[622]) ).

thf(724,plain,
    ! [SV68: $i] :
      ( ( ~ ! [SY327: $i] :
              ( ~ ( subset @ SY327 @ ( sK19_B @ SV68 ) )
              | ( are_equipotent @ SY327 @ ( sK19_B @ SV68 ) )
              | ( in @ SY327 @ ( sK19_B @ SV68 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[623]) ).

thf(725,plain,
    ! [SV68: $i] :
      ( ( ~ ~ ( ~ ! [SY328: $i] :
                    ( ~ ( in @ SY328 @ ( sK19_B @ SV68 ) )
                    | ( in @ ( powerset @ SY328 ) @ ( sK19_B @ SV68 ) ) )
              | ~ ~ ( ~ ! [SY329: $i,SY330: $i] :
                          ( ~ ( in @ SY329 @ ( sK19_B @ SV68 ) )
                          | ~ ( subset @ SY330 @ SY329 )
                          | ( in @ SY330 @ ( sK19_B @ SV68 ) ) )
                    | ~ ( in @ SV68 @ ( sK19_B @ SV68 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[623]) ).

thf(726,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ( ( sK16_C @ SX1 @ SX0 )
                   != SX0 )
                  | ~ ( in @ ( sK16_C @ SX1 @ SX0 ) @ SX1 ) )
              | ~ ( ( ( sK16_C @ SX1 @ SX0 )
                    = SX0 )
                  | ( in @ ( sK16_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ( SX1
            = ( singleton @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[624]) ).

thf(727,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)],[625]) ).

thf(728,plain,
    ! [SV69: $i,SV124: $i] :
      ( ( ( ~ ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY387: $i] :
                    ( ~ ( element @ SY387 @ ( powerset @ ( powerset @ SV69 ) ) )
                    | ~ ( ~ ( element @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
                        | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                                  | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) )
                              | ~ ( ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                                  | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
                    | ( SY387
                      = ( complements_of_subsets @ SV69 @ SV124 ) ) )
              | ~ ! [SY388: $i] :
                    ( ~ ( element @ SY388 @ ( powerset @ ( powerset @ SV69 ) ) )
                    | ( SY388
                     != ( complements_of_subsets @ SV69 @ SV124 ) )
                    | ~ ( ~ ! [SY389: $i] :
                              ( ~ ( element @ SY389 @ ( powerset @ SV69 ) )
                              | ~ ( in @ SY389 @ SY388 )
                              | ( in @ ( subset_complement @ SV69 @ SY389 ) @ SV124 ) )
                        | ~ ! [SY390: $i] :
                              ( ~ ( element @ SY390 @ ( powerset @ SV69 ) )
                              | ~ ( in @ ( subset_complement @ SV69 @ SY390 ) @ SV124 )
                              | ( in @ SY390 @ SY388 ) ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[626]) ).

thf(729,plain,
    ! [SV70: $i] :
      ( ( ~ ! [SY336: $i,SY337: $i] :
              ( ~ ( in @ SV70 @ SY337 )
              | ~ ( in @ SY336 @ SY337 )
              | ( subset @ ( unordered_pair @ SV70 @ SY336 ) @ SY337 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[627]) ).

thf(730,plain,
    ! [SV70: $i] :
      ( ( ~ ~ ( ~ ! [SY338: $i,SY339: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV70 @ SY338 ) @ SY339 )
                    | ( in @ SV70 @ SY339 ) )
              | ~ ! [SY340: $i,SY341: $i] :
                    ( ~ ( subset @ ( unordered_pair @ SV70 @ SY340 ) @ SY341 )
                    | ( in @ SY340 @ SY341 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[627]) ).

thf(731,plain,
    ! [SV71: $i] :
      ( ( ~ ! [SY342: $i] :
              ( ~ ( subset @ SY342 @ ( sK3_B @ SV71 ) )
              | ( are_equipotent @ SY342 @ ( sK3_B @ SV71 ) )
              | ( in @ SY342 @ ( sK3_B @ SV71 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[628]) ).

thf(732,plain,
    ! [SV71: $i] :
      ( ( ~ ~ ( ~ ! [SY343: $i] :
                    ( ~ ( ~ ! [SY344: $i] :
                              ( ~ ( subset @ SY344 @ SY343 )
                              | ( in @ SY344 @ ( sK4_SY240 @ SY343 @ SV71 ) ) )
                        | ~ ( in @ ( sK4_SY240 @ SY343 @ SV71 ) @ ( sK3_B @ SV71 ) ) )
                    | ~ ( in @ SY343 @ ( sK3_B @ SV71 ) ) )
              | ~ ~ ( ~ ! [SY345: $i,SY346: $i] :
                          ( ~ ( in @ SY345 @ ( sK3_B @ SV71 ) )
                          | ~ ( subset @ SY346 @ SY345 )
                          | ( in @ SY346 @ ( sK3_B @ SV71 ) ) )
                    | ~ ( in @ SV71 @ ( sK3_B @ SV71 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[628]) ).

thf(733,plain,
    ! [SV72: $i] :
      ( ( ~ ! [SY347: $i,SY348: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SV72 )
                      | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY347 )
                      | ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SV72 )
                            | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) )
                        | ~ ( ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY347 )
                            | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) ) ) )
              | ( SY348
                = ( set_difference @ SV72 @ SY347 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[629]) ).

thf(734,plain,
    ! [SV72: $i] :
      ( ( ~ ! [SY349: $i,SY350: $i] :
              ( ( SY350
               != ( set_difference @ SV72 @ SY349 ) )
              | ~ ( ~ ! [SY351: $i] :
                        ( ~ ( in @ SY351 @ SV72 )
                        | ( in @ SY351 @ SY349 )
                        | ( in @ SY351 @ SY350 ) )
                  | ~ ~ ( ~ ! [SY352: $i] :
                              ( ~ ( in @ SY352 @ SY350 )
                              | ( in @ SY352 @ SV72 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY350 )
                              | ~ ( in @ SX3 @ SY349 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[629]) ).

thf(735,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( disjoint @ SX0 @ SX1 )
          | ( in @ ( sK17_C @ SX1 @ SX0 ) @ ( set_intersection2 @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[630]) ).

thf(736,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ! [SX2: $i] :
              ~ ( in @ SX2 @ ( set_intersection2 @ SX0 @ SX1 ) )
          | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[631]) ).

thf(737,plain,
    ! [SV73: $i,SV125: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV73 )
              | ~ ~ ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV125 ) ) )
        = $true )
      | ( ( element @ SV73 @ ( powerset @ SV125 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[632]) ).

thf(738,plain,
    ! [SV74: $i] :
      ( ( ( ~ ( element @ ( sK21_B @ SV74 ) @ ( powerset @ SV74 ) )
          | ~ ~ ( empty @ ( sK21_B @ SV74 ) ) )
        = $false )
      | ( ( empty @ SV74 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[633]) ).

thf(739,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( disjoint @ SX0 @ SX1 )
          | ~ ( ~ ( in @ ( sK18_C @ SX1 @ SX0 ) @ SX0 )
              | ~ ( in @ ( sK18_C @ SX1 @ SX0 ) @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[634]) ).

thf(740,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ! [SX2: $i] :
              ( ~ ( in @ SX2 @ SX0 )
              | ~ ( in @ SX2 @ SX1 ) )
          | ~ ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[635]) ).

thf(741,plain,
    ! [SV75: $i,SV126: $i] :
      ( ( ( ~ ( element @ SV126 @ ( powerset @ SV75 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY391: $i] :
                    ( ~ ( element @ SY391 @ ( powerset @ SV75 ) )
                    | ~ ( disjoint @ SV126 @ SY391 )
                    | ( subset @ SV126 @ ( subset_complement @ SV75 @ SY391 ) ) )
              | ~ ! [SY392: $i] :
                    ( ~ ( element @ SY392 @ ( powerset @ SV75 ) )
                    | ~ ( subset @ SV126 @ ( subset_complement @ SV75 @ SY392 ) )
                    | ( disjoint @ SV126 @ SY392 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[636]) ).

thf(742,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_difference @ SX0 @ SX1 )
           != empty_set )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[637]) ).

thf(743,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ( ( set_difference @ SX0 @ SX1 )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[638]) ).

thf(744,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_intersection2 @ SX0 @ SX1 )
           != empty_set )
          | ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[639]) ).

thf(745,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( disjoint @ SX0 @ SX1 )
          | ( ( set_intersection2 @ SX0 @ SX1 )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[640]) ).

thf(746,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ! [SX2: $i] :
                      ( ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ SX2 )
                      | ~ ( in @ SX2 @ SX0 ) )
                  | ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ SX1 ) )
              | ~ ( ~ ( ~ ( in @ ( sK10_C @ SX1 @ SX0 ) @ ( sK11_SY246 @ SX1 @ SX0 ) )
                      | ~ ( in @ ( sK11_SY246 @ SX1 @ SX0 ) @ SX0 ) )
                  | ( in @ ( sK10_C @ SX1 @ SX0 ) @ SX1 ) ) )
          | ( SX1
            = ( union @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[641]) ).

thf(747,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 @ ( sK9_D @ SX2 @ SX1 @ SX0 ) )
                        | ~ ( in @ ( sK9_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[642]) ).

thf(748,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_difference @ SX0 @ SX1 )
           != empty_set )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[643]) ).

thf(749,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ SX1 )
          | ( ( set_difference @ SX0 @ SX1 )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[644]) ).

thf(750,plain,
    ! [SV76: $i] :
      ( ( ~ ! [SY358: $i,SY359: $i] :
              ( ~ ( ~ ( ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SV76 )
                      | ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY358 )
                      | ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) )
                  | ~ ~ ( ~ ( ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SV76 )
                            | ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) )
                        | ~ ( ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY358 )
                            | ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) ) ) )
              | ( SY359
                = ( set_intersection2 @ SV76 @ SY358 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[645]) ).

thf(751,plain,
    ! [SV76: $i] :
      ( ( ~ ! [SY360: $i,SY361: $i] :
              ( ( SY361
               != ( set_intersection2 @ SV76 @ SY360 ) )
              | ~ ( ~ ! [SY362: $i] :
                        ( ~ ( in @ SY362 @ SV76 )
                        | ~ ( in @ SY362 @ SY360 )
                        | ( in @ SY362 @ SY361 ) )
                  | ~ ~ ( ~ ! [SY363: $i] :
                              ( ~ ( in @ SY363 @ SY361 )
                              | ( in @ SY363 @ SV76 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY361 )
                              | ( in @ SX3 @ SY360 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[645]) ).

thf(752,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( in @ SX0 @ SX1 )
          | ( subset @ ( singleton @ SX0 ) @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[646]) ).

thf(753,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ ( singleton @ SX0 ) @ SX1 )
          | ( in @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[647]) ).

thf(754,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( subset @ SX0 @ ( singleton @ SX1 ) )
          | ( SX0 = empty_set )
          | ( SX0
            = ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[648]) ).

thf(755,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)],[649]) ).

thf(756,plain,
    ! [SV77: $i] :
      ( ( ~ ! [SY365: $i,SY366: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                            | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                             != SV77 ) )
                        | ~ ( ~ ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                            | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                             != SY365 ) ) )
                  | ~ ( ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                      | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                        = SV77 )
                      | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                        = SY365 ) ) )
              | ( SY366
                = ( unordered_pair @ SV77 @ SY365 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[650]) ).

thf(757,plain,
    ! [SV77: $i] :
      ( ( ~ ! [SY367: $i,SY368: $i] :
              ( ( SY368
               != ( unordered_pair @ SV77 @ SY367 ) )
              | ~ ( ~ ! [SY369: $i] :
                        ( ~ ( in @ SY369 @ SY368 )
                        | ( SY369 = SV77 )
                        | ( SY369 = SY367 ) )
                  | ~ ~ ( ~ ! [SY370: $i] :
                              ( ( SY370 != SV77 )
                              | ( in @ SY370 @ SY368 ) )
                        | ~ ! [SX3: $i] :
                              ( ( SX3 != SY367 )
                              | ( in @ SX3 @ SY368 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[650]) ).

thf(758,plain,
    ( ( ( sK2_SY237 != empty_set ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[651]) ).

thf(759,plain,
    ( ( ( complements_of_subsets @ sK1_A @ sK2_SY237 )
      = empty_set )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[652]) ).

thf(760,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_difference @ SX0 @ ( singleton @ SX1 ) )
           != SX0 )
          | ~ ( in @ SX1 @ SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[653]) ).

thf(761,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( in @ SX1 @ SX0 )
          | ( ( set_difference @ SX0 @ ( singleton @ SX1 ) )
            = SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[654]) ).

thf(762,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( ~ ( ~ ( in @ ( sK24_C @ SX1 @ SX0 ) @ SX1 )
                  | ~ ( subset @ ( sK24_C @ SX1 @ SX0 ) @ SX0 ) )
              | ~ ( ( in @ ( sK24_C @ SX1 @ SX0 ) @ SX1 )
                  | ( subset @ ( sK24_C @ SX1 @ SX0 ) @ SX0 ) ) )
          | ( SX1
            = ( powerset @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[655]) ).

thf(763,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)],[656]) ).

thf(764,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( set_difference @ SX0 @ SX1 )
           != SX0 )
          | ( disjoint @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[657]) ).

thf(765,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( disjoint @ SX0 @ SX1 )
          | ( ( set_difference @ SX0 @ SX1 )
            = SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[658]) ).

thf(766,plain,
    ! [SV2: $i,SV78: $i] :
      ( ( ( element @ SV78 @ ( powerset @ SV2 ) )
        = $false )
      | ( ( ! [SY372: $i] :
              ( ~ ( in @ SY372 @ SV78 )
              | ( in @ SY372 @ SV2 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[659]) ).

thf(767,plain,
    ! [SV5: $i,SV127: $i] :
      ( ( ( ~ ( element @ SV127 @ ( powerset @ SV5 ) ) )
        = $true )
      | ( ( ! [SY393: $i] :
              ( ~ ( element @ SY393 @ SV5 )
              | ( in @ SY393 @ SV127 )
              | ( in @ SY393 @ ( subset_complement @ SV5 @ SV127 ) ) ) )
        = $true )
      | ( ( SV5 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[661]) ).

thf(768,plain,
    ! [SV79: $i,SV6: $i,SV128: $i] :
      ( ( ( ~ ( element @ SV128 @ ( powerset @ SV6 ) ) )
        = $true )
      | ( ( ~ ( in @ SV79 @ ( subset_complement @ SV6 @ SV128 ) )
          | ~ ( in @ SV79 @ SV128 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[662]) ).

thf(769,plain,
    ! [SV8: $i,SV80: $i] :
      ( ( ( element @ SV80 @ ( powerset @ SV8 ) )
        = $false )
      | ( ( ( subset_complement @ SV8 @ SV80 )
          = ( set_difference @ SV8 @ SV80 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[663]) ).

thf(770,plain,
    ! [SV9: $i,SV81: $i] :
      ( ( ( element @ SV81 @ ( powerset @ SV9 ) )
        = $false )
      | ( ( element @ ( subset_complement @ SV9 @ SV81 ) @ ( powerset @ SV9 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[664]) ).

thf(771,plain,
    ! [SV10: $i,SV82: $i] :
      ( ( ( element @ SV82 @ ( powerset @ ( powerset @ SV10 ) ) )
        = $false )
      | ( ( element @ ( complements_of_subsets @ SV10 @ SV82 ) @ ( powerset @ ( powerset @ SV10 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[665]) ).

thf(772,plain,
    ! [SV13: $i,SV83: $i] :
      ( ( ( element @ SV83 @ ( powerset @ SV13 ) )
        = $false )
      | ( ( ( subset_complement @ SV13 @ ( subset_complement @ SV13 @ SV83 ) )
          = SV83 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[666]) ).

thf(773,plain,
    ! [SV14: $i,SV84: $i] :
      ( ( ( element @ SV84 @ ( powerset @ ( powerset @ SV14 ) ) )
        = $false )
      | ( ( ( complements_of_subsets @ SV14 @ ( complements_of_subsets @ SV14 @ SV84 ) )
          = SV84 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[667]) ).

thf(774,plain,
    ! [SV85: $i,SV16: $i] :
      ( ( ( in @ SV16 @ SV85 )
        = $false )
      | ( ( element @ SV16 @ SV85 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[668]) ).

thf(775,plain,
    ! [SV86: $i,SV18: $i] :
      ( ( ( element @ SV18 @ SV86 )
        = $false )
      | ( ( ( empty @ SV86 )
          | ( in @ SV18 @ SV86 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[669]) ).

thf(776,plain,
    ! [SV21: $i,SV129: $i,SV87: $i] :
      ( ( ( ~ ( element @ SV87 @ ( powerset @ SV129 ) )
          | ~ ( in @ SV21 @ SV87 ) )
        = $true )
      | ( ( element @ SV21 @ SV129 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[670]) ).

thf(777,plain,
    ! [SV22: $i,SV130: $i,SV88: $i] :
      ( ( ( ~ ( element @ SV88 @ ( powerset @ SV130 ) )
          | ~ ( in @ SV22 @ SV88 ) )
        = $true )
      | ( ( ~ ( empty @ SV130 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[671]) ).

thf(778,plain,
    ! [SV89: $i,SV24: $i] :
      ( ( ( in @ SV24 @ SV89 )
        = $false )
      | ( ( ( set_union2 @ ( singleton @ SV24 ) @ SV89 )
          = SV89 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[673]) ).

thf(779,plain,
    ! [SV90: $i,SV25: $i] :
      ( ( ( disjoint @ ( singleton @ SV25 ) @ SV90 )
        = $false )
      | ( ( ~ ( in @ SV25 @ SV90 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[674]) ).

thf(780,plain,
    ! [SV92: $i,SV27: $i] :
      ( ( ( subset @ SV27 @ SV92 )
        = $false )
      | ( ( ! [SY376: $i] :
              ( ( in @ SY376 @ SV27 )
              | ( subset @ SV27 @ ( set_difference @ SV92 @ ( singleton @ SY376 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[676]) ).

thf(781,plain,
    ! [SV93: $i,SV28: $i] :
      ( ( ( in @ SV28 @ SV93 )
        = $false )
      | ( ( subset @ SV28 @ ( union @ SV93 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[677]) ).

thf(782,plain,
    ! [SV139: $i,SV131: $i,SV94: $i,SV29: $i] :
      ( ( ~ ( subset @ SV29 @ SV94 )
        | ~ ( subset @ SV131 @ SV139 )
        | ( subset @ ( cartesian_product2 @ SV29 @ SV131 ) @ ( cartesian_product2 @ SV94 @ SV139 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[678]) ).

thf(783,plain,
    ! [SV95: $i,SV30: $i] :
      ( ( ( subset @ SV30 @ SV95 )
        = $false )
      | ( ( ( set_union2 @ SV30 @ SV95 )
          = SV95 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[679]) ).

thf(784,plain,
    ! [SV132: $i,SV97: $i,SV32: $i] :
      ( ( ( ~ ( subset @ SV32 @ SV97 )
          | ~ ( subset @ SV32 @ SV132 ) )
        = $true )
      | ( ( subset @ SV32 @ ( set_intersection2 @ SV97 @ SV132 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[680]) ).

thf(785,plain,
    ! [SV133: $i,SV98: $i,SV33: $i] :
      ( ( ( ~ ( subset @ SV33 @ SV98 )
          | ~ ( subset @ SV98 @ SV133 ) )
        = $true )
      | ( ( subset @ SV33 @ SV133 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[681]) ).

thf(786,plain,
    ! [SV99: $i,SV34: $i] :
      ( ( ( subset @ SV34 @ SV99 )
        = $false )
      | ( ( ! [SY381: $i] : ( subset @ ( set_intersection2 @ SV34 @ SY381 ) @ ( set_intersection2 @ SV99 @ SY381 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[682]) ).

thf(787,plain,
    ! [SV100: $i,SV35: $i] :
      ( ( ( subset @ SV35 @ SV100 )
        = $false )
      | ( ( ( set_intersection2 @ SV35 @ SV100 )
          = SV35 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[683]) ).

thf(788,plain,
    ! [SV101: $i,SV36: $i] :
      ( ( ( subset @ SV36 @ SV101 )
        = $false )
      | ( ( ! [SY382: $i] : ( subset @ ( set_difference @ SV36 @ SY382 ) @ ( set_difference @ SV101 @ SY382 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[684]) ).

thf(789,plain,
    ! [SV105: $i,SV40: $i] :
      ( ( ( subset @ SV40 @ SV105 )
        = $false )
      | ( ( SV105
          = ( set_union2 @ SV40 @ ( set_difference @ SV105 @ SV40 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[685]) ).

thf(790,plain,
    ! [SV106: $i,SV41: $i] :
      ( ( ( in @ SV41 @ SV106 )
        = $false )
      | ( ( ( set_union2 @ ( singleton @ SV41 ) @ SV106 )
          = SV106 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[686]) ).

thf(791,plain,
    ! [SV43: $i,SV108: $i] :
      ( ( ( proper_subset @ SV108 @ SV43 )
        = $false )
      | ( ( ~ ( subset @ SV43 @ SV108 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[687]) ).

thf(792,plain,
    ! [SV44: $i,SV134: $i,SV109: $i] :
      ( ( ( ~ ( disjoint @ SV109 @ SV134 )
          | ~ ( subset @ SV44 @ SV109 ) )
        = $true )
      | ( ( disjoint @ SV44 @ SV134 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[688]) ).

thf(793,plain,
    ! [SV110: $i,SV46: $i] :
      ( ( ( subset @ ( singleton @ SV46 ) @ ( singleton @ SV110 ) )
        = $false )
      | ( ( SV46 = SV110 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[689]) ).

thf(794,plain,
    ! [SV135: $i,SV112: $i,SV48: $i] :
      ( ( ( ~ ( subset @ SV48 @ SV112 )
          | ~ ( subset @ SV135 @ SV112 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV48 @ SV135 ) @ SV112 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[690]) ).

thf(795,plain,
    ! [SV140: $i,SV113: $i,SV49: $i] :
      ( ( ( ( ( singleton @ SV49 )
           != ( unordered_pair @ SV113 @ SV140 ) ) )
        = $true )
      | ( ( SV49 = SV113 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[691]) ).

thf(796,plain,
    ! [SV114: $i,SV50: $i] :
      ( ( ( in @ SV50 @ SV114 )
        = $false )
      | ( ( subset @ SV50 @ ( union @ SV114 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[692]) ).

thf(797,plain,
    ! [SV136: $i,SV115: $i,SV51: $i] :
      ( ( ( ( ( singleton @ SV51 )
           != ( unordered_pair @ SV115 @ SV136 ) ) )
        = $true )
      | ( ( SV115 = SV136 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[693]) ).

thf(798,plain,
    ! [SV116: $i,SV52: $i] :
      ( ( ( in @ SV52 @ SV116 )
        = $false )
      | ( ( ~ ( in @ SV116 @ SV52 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[694]) ).

thf(799,plain,
    ! [SV137: $i,SV56: $i] :
      ( ( ( empty @ ( set_union2 @ SV56 @ SV137 ) )
        = $false )
      | ( ( empty @ SV56 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[696]) ).

thf(800,plain,
    ! [SV57: $i,SV138: $i] :
      ( ( ( empty @ ( set_union2 @ SV138 @ SV57 ) )
        = $false )
      | ( ( empty @ SV57 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[697]) ).

thf(801,plain,
    ! [SV120: $i,SV61: $i] :
      ( ( ( disjoint @ SV61 @ SV120 )
        = $false )
      | ( ( disjoint @ SV120 @ SV61 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[698]) ).

thf(802,plain,
    ! [SV62: $i,SV121: $i] :
      ( ( ( empty @ SV121 )
        = $false )
      | ( ( ~ ( in @ SV62 @ SV121 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[699]) ).

thf(803,plain,
    ! [SV122: $i,SV63: $i] :
      ( ( ( SV63 = SV122 )
        = $true )
      | ( ( ~ ( empty @ SV63 ) )
        = $true )
      | ( ( ~ ( empty @ SV122 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[700]) ).

thf(804,plain,
    ! [SV141: $i] :
      ( ( ( in @ ( sK25_B @ SV141 ) @ SV141 )
        | ( SV141 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[701]) ).

thf(805,plain,
    ! [SV142: $i] :
      ( ( ( SV142 != empty_set )
        | ! [SY395: $i] :
            ~ ( in @ SY395 @ SV142 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[702]) ).

thf(806,plain,
    ! [SV143: $i] :
      ( ( ! [SY396: $i] :
            ( ( SV143 = SY396 )
            | ~ ( subset @ SV143 @ SY396 )
            | ( proper_subset @ SV143 @ SY396 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[703]) ).

thf(807,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)],[704]) ).

thf(808,plain,
    ! [SV144: $i] :
      ( ( ! [SY397: $i] :
            ( ~ ( subset @ SV144 @ ( singleton @ SY397 ) )
            | ( SV144 = empty_set )
            | ( SV144
              = ( singleton @ SY397 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[705]) ).

thf(809,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)],[706]) ).

thf(810,plain,
    ! [SV145: $i] :
      ( ( ! [SY398: $i] :
            ( ~ ( element @ SV145 @ ( powerset @ SY398 ) )
            | ( subset @ SV145 @ SY398 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[707]) ).

thf(811,plain,
    ! [SV146: $i] :
      ( ( ! [SY399: $i] :
            ( ~ ( subset @ SV146 @ SY399 )
            | ( element @ SV146 @ ( powerset @ SY399 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[708]) ).

thf(812,plain,
    ! [SV147: $i] :
      ( ( ! [SY400: $i] :
            ( ~ ( subset @ SV147 @ SY400 )
            | ~ ( subset @ SY400 @ SV147 )
            | ( SV147 = SY400 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[709]) ).

thf(813,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)],[710]) ).

thf(814,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
              | ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) )
          | ~ ( ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
              | ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) ) )
        = $false )
      | ( ( SV64 = SV123 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[711]) ).

thf(815,plain,
    ! [SV65: $i] :
      ( ( ! [SY316: $i,SY317: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                          | ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SV65 ) )
                      | ~ ( ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                          | ~ ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY316 ) ) )
                | ~ ( ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY317 )
                    | ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SV65 )
                    | ( in @ ( sK14_D @ SY317 @ SY316 @ SV65 ) @ SY316 ) ) )
            | ( SY317
              = ( set_union2 @ SV65 @ SY316 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[712]) ).

thf(816,plain,
    ! [SV65: $i] :
      ( ( ! [SY318: $i,SY319: $i] :
            ( ( SY319
             != ( set_union2 @ SV65 @ SY318 ) )
            | ~ ( ~ ! [SY320: $i] :
                      ( ~ ( in @ SY320 @ SY319 )
                      | ( in @ SY320 @ SV65 )
                      | ( in @ SY320 @ SY318 ) )
                | ~ ~ ( ~ ! [SY321: $i] :
                            ( ~ ( in @ SY321 @ SV65 )
                            | ( in @ SY321 @ SY319 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SY318 )
                            | ( in @ SX3 @ SY319 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[713]) ).

thf(817,plain,
    ! [SV66: $i] :
      ( ( element @ ( sK20_B @ SV66 ) @ ( powerset @ SV66 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[714]) ).

thf(818,plain,
    ! [SV66: $i] :
      ( ( empty @ ( sK20_B @ SV66 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[715]) ).

thf(819,plain,
    ! [SV148: $i] :
      ( ( ! [SY401: $i] :
            ( ~ ( in @ SV148 @ SY401 )
            | ( subset @ ( singleton @ SV148 ) @ SY401 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[716]) ).

thf(820,plain,
    ! [SV149: $i] :
      ( ( ! [SY402: $i] :
            ( ~ ( subset @ ( singleton @ SV149 ) @ SY402 )
            | ( in @ SV149 @ SY402 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[717]) ).

thf(821,plain,
    ! [SV67: $i] :
      ( ( ! [SY323: $i] :
            ( ~ ( subset @ SV67 @ SY323 )
            | ! [SY324: $i] : ( subset @ ( cartesian_product2 @ SV67 @ SY324 ) @ ( cartesian_product2 @ SY323 @ SY324 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[718]) ).

thf(822,plain,
    ! [SV67: $i] :
      ( ( ! [SY325: $i] :
            ( ~ ( subset @ SV67 @ SY325 )
            | ! [SY326: $i] : ( subset @ ( cartesian_product2 @ SY326 @ SV67 ) @ ( cartesian_product2 @ SY326 @ SY325 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[719]) ).

thf(823,plain,
    ! [SV150: $i] :
      ( ( ! [SY403: $i] :
            ( ~ ( ~ ( in @ ( sK13_C @ SY403 @ SV150 ) @ SV150 )
                | ~ ~ ( in @ ( sK13_C @ SY403 @ SV150 ) @ SY403 ) )
            | ( subset @ SV150 @ SY403 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[720]) ).

thf(824,plain,
    ! [SV151: $i] :
      ( ( ! [SY404: $i] :
            ( ~ ( subset @ SV151 @ SY404 )
            | ! [SY405: $i] :
                ( ~ ( in @ SY405 @ SV151 )
                | ( in @ SY405 @ SY404 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[721]) ).

thf(825,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( empty @ SX0 )
            | ! [SX1: $i] :
                ( ~ ( element @ SX1 @ SX0 )
                | ( in @ SX1 @ SX0 ) ) )
      | ~ ! [SX0: $i] :
            ( ( empty @ SX0 )
            | ! [SX1: $i] :
                ( ~ ( in @ SX1 @ SX0 )
                | ( element @ SX1 @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[722]) ).

thf(826,plain,
    ( ( ~ ! [SX0: $i] :
            ( ~ ( empty @ SX0 )
            | ! [SX1: $i] :
                ( ~ ( element @ SX1 @ SX0 )
                | ( empty @ SX1 ) ) )
      | ~ ! [SX0: $i] :
            ( ~ ( empty @ SX0 )
            | ! [SX1: $i] :
                ( ~ ( empty @ SX1 )
                | ( element @ SX1 @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[723]) ).

thf(827,plain,
    ! [SV68: $i] :
      ( ( ! [SY327: $i] :
            ( ~ ( subset @ SY327 @ ( sK19_B @ SV68 ) )
            | ( are_equipotent @ SY327 @ ( sK19_B @ SV68 ) )
            | ( in @ SY327 @ ( sK19_B @ SV68 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[724]) ).

thf(828,plain,
    ! [SV68: $i] :
      ( ( ~ ( ~ ! [SY328: $i] :
                  ( ~ ( in @ SY328 @ ( sK19_B @ SV68 ) )
                  | ( in @ ( powerset @ SY328 ) @ ( sK19_B @ SV68 ) ) )
            | ~ ~ ( ~ ! [SY329: $i,SY330: $i] :
                        ( ~ ( in @ SY329 @ ( sK19_B @ SV68 ) )
                        | ~ ( subset @ SY330 @ SY329 )
                        | ( in @ SY330 @ ( sK19_B @ SV68 ) ) )
                  | ~ ( in @ SV68 @ ( sK19_B @ SV68 ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[725]) ).

thf(829,plain,
    ! [SV152: $i] :
      ( ( ! [SY406: $i] :
            ( ~ ( ~ ( ( ( sK16_C @ SY406 @ SV152 )
                     != SV152 )
                    | ~ ( in @ ( sK16_C @ SY406 @ SV152 ) @ SY406 ) )
                | ~ ( ( ( sK16_C @ SY406 @ SV152 )
                      = SV152 )
                    | ( in @ ( sK16_C @ SY406 @ SV152 ) @ SY406 ) ) )
            | ( SY406
              = ( singleton @ SV152 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[726]) ).

thf(830,plain,
    ! [SV153: $i] :
      ( ( ! [SY407: $i] :
            ( ( SY407
             != ( singleton @ SV153 ) )
            | ~ ( ~ ! [SY408: $i] :
                      ( ( SY408 != SV153 )
                      | ( in @ SY408 @ SY407 ) )
                | ~ ! [SY409: $i] :
                      ( ~ ( in @ SY409 @ SY407 )
                      | ( SY409 = SV153 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[727]) ).

thf(831,plain,
    ! [SV69: $i,SV124: $i] :
      ( ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( ~ ( ~ ! [SY387: $i] :
                    ( ~ ( element @ SY387 @ ( powerset @ ( powerset @ SV69 ) ) )
                    | ~ ( ~ ( element @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
                        | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                                  | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) )
                              | ~ ( ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                                  | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
                    | ( SY387
                      = ( complements_of_subsets @ SV69 @ SV124 ) ) )
              | ~ ! [SY388: $i] :
                    ( ~ ( element @ SY388 @ ( powerset @ ( powerset @ SV69 ) ) )
                    | ( SY388
                     != ( complements_of_subsets @ SV69 @ SV124 ) )
                    | ~ ( ~ ! [SY389: $i] :
                              ( ~ ( element @ SY389 @ ( powerset @ SV69 ) )
                              | ~ ( in @ SY389 @ SY388 )
                              | ( in @ ( subset_complement @ SV69 @ SY389 ) @ SV124 ) )
                        | ~ ! [SY390: $i] :
                              ( ~ ( element @ SY390 @ ( powerset @ SV69 ) )
                              | ~ ( in @ ( subset_complement @ SV69 @ SY390 ) @ SV124 )
                              | ( in @ SY390 @ SY388 ) ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[728]) ).

thf(832,plain,
    ! [SV70: $i] :
      ( ( ! [SY336: $i,SY337: $i] :
            ( ~ ( in @ SV70 @ SY337 )
            | ~ ( in @ SY336 @ SY337 )
            | ( subset @ ( unordered_pair @ SV70 @ SY336 ) @ SY337 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[729]) ).

thf(833,plain,
    ! [SV70: $i] :
      ( ( ~ ( ~ ! [SY338: $i,SY339: $i] :
                  ( ~ ( subset @ ( unordered_pair @ SV70 @ SY338 ) @ SY339 )
                  | ( in @ SV70 @ SY339 ) )
            | ~ ! [SY340: $i,SY341: $i] :
                  ( ~ ( subset @ ( unordered_pair @ SV70 @ SY340 ) @ SY341 )
                  | ( in @ SY340 @ SY341 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[730]) ).

thf(834,plain,
    ! [SV71: $i] :
      ( ( ! [SY342: $i] :
            ( ~ ( subset @ SY342 @ ( sK3_B @ SV71 ) )
            | ( are_equipotent @ SY342 @ ( sK3_B @ SV71 ) )
            | ( in @ SY342 @ ( sK3_B @ SV71 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[731]) ).

thf(835,plain,
    ! [SV71: $i] :
      ( ( ~ ( ~ ! [SY343: $i] :
                  ( ~ ( ~ ! [SY344: $i] :
                            ( ~ ( subset @ SY344 @ SY343 )
                            | ( in @ SY344 @ ( sK4_SY240 @ SY343 @ SV71 ) ) )
                      | ~ ( in @ ( sK4_SY240 @ SY343 @ SV71 ) @ ( sK3_B @ SV71 ) ) )
                  | ~ ( in @ SY343 @ ( sK3_B @ SV71 ) ) )
            | ~ ~ ( ~ ! [SY345: $i,SY346: $i] :
                        ( ~ ( in @ SY345 @ ( sK3_B @ SV71 ) )
                        | ~ ( subset @ SY346 @ SY345 )
                        | ( in @ SY346 @ ( sK3_B @ SV71 ) ) )
                  | ~ ( in @ SV71 @ ( sK3_B @ SV71 ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[732]) ).

thf(836,plain,
    ! [SV72: $i] :
      ( ( ! [SY347: $i,SY348: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SV72 )
                    | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY347 )
                    | ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) )
                | ~ ~ ( ~ ( ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SV72 )
                          | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) )
                      | ~ ( ~ ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY347 )
                          | ( in @ ( sK8_D @ SY348 @ SY347 @ SV72 ) @ SY348 ) ) ) )
            | ( SY348
              = ( set_difference @ SV72 @ SY347 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[733]) ).

thf(837,plain,
    ! [SV72: $i] :
      ( ( ! [SY349: $i,SY350: $i] :
            ( ( SY350
             != ( set_difference @ SV72 @ SY349 ) )
            | ~ ( ~ ! [SY351: $i] :
                      ( ~ ( in @ SY351 @ SV72 )
                      | ( in @ SY351 @ SY349 )
                      | ( in @ SY351 @ SY350 ) )
                | ~ ~ ( ~ ! [SY352: $i] :
                            ( ~ ( in @ SY352 @ SY350 )
                            | ( in @ SY352 @ SV72 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SY350 )
                            | ~ ( in @ SX3 @ SY349 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[734]) ).

thf(838,plain,
    ! [SV154: $i] :
      ( ( ! [SY410: $i] :
            ( ( disjoint @ SV154 @ SY410 )
            | ( in @ ( sK17_C @ SY410 @ SV154 ) @ ( set_intersection2 @ SV154 @ SY410 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[735]) ).

thf(839,plain,
    ! [SV155: $i] :
      ( ( ! [SY411: $i] :
            ( ! [SY412: $i] :
                ~ ( in @ SY412 @ ( set_intersection2 @ SV155 @ SY411 ) )
            | ~ ( disjoint @ SV155 @ SY411 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[736]) ).

thf(840,plain,
    ! [SV73: $i,SV125: $i] :
      ( ( ( ~ ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV73 )
          | ~ ~ ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV125 ) )
        = $false )
      | ( ( element @ SV73 @ ( powerset @ SV125 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[737]) ).

thf(841,plain,
    ! [SV74: $i] :
      ( ( ( ~ ( element @ ( sK21_B @ SV74 ) @ ( powerset @ SV74 ) ) )
        = $false )
      | ( ( empty @ SV74 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[738]) ).

thf(842,plain,
    ! [SV74: $i] :
      ( ( ( ~ ~ ( empty @ ( sK21_B @ SV74 ) ) )
        = $false )
      | ( ( empty @ SV74 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[738]) ).

thf(843,plain,
    ! [SV156: $i] :
      ( ( ! [SY413: $i] :
            ( ( disjoint @ SV156 @ SY413 )
            | ~ ( ~ ( in @ ( sK18_C @ SY413 @ SV156 ) @ SV156 )
                | ~ ( in @ ( sK18_C @ SY413 @ SV156 ) @ SY413 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[739]) ).

thf(844,plain,
    ! [SV157: $i] :
      ( ( ! [SY414: $i] :
            ( ! [SY415: $i] :
                ( ~ ( in @ SY415 @ SV157 )
                | ~ ( in @ SY415 @ SY414 ) )
            | ~ ( disjoint @ SV157 @ SY414 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[740]) ).

thf(845,plain,
    ! [SV75: $i,SV126: $i] :
      ( ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY391: $i] :
                    ( ~ ( element @ SY391 @ ( powerset @ SV75 ) )
                    | ~ ( disjoint @ SV126 @ SY391 )
                    | ( subset @ SV126 @ ( subset_complement @ SV75 @ SY391 ) ) )
              | ~ ! [SY392: $i] :
                    ( ~ ( element @ SY392 @ ( powerset @ SV75 ) )
                    | ~ ( subset @ SV126 @ ( subset_complement @ SV75 @ SY392 ) )
                    | ( disjoint @ SV126 @ SY392 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[741]) ).

thf(846,plain,
    ! [SV158: $i] :
      ( ( ! [SY416: $i] :
            ( ( ( set_difference @ SV158 @ SY416 )
             != empty_set )
            | ( subset @ SV158 @ SY416 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[742]) ).

thf(847,plain,
    ! [SV159: $i] :
      ( ( ! [SY417: $i] :
            ( ~ ( subset @ SV159 @ SY417 )
            | ( ( set_difference @ SV159 @ SY417 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[743]) ).

thf(848,plain,
    ! [SV160: $i] :
      ( ( ! [SY418: $i] :
            ( ( ( set_intersection2 @ SV160 @ SY418 )
             != empty_set )
            | ( disjoint @ SV160 @ SY418 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[744]) ).

thf(849,plain,
    ! [SV161: $i] :
      ( ( ! [SY419: $i] :
            ( ~ ( disjoint @ SV161 @ SY419 )
            | ( ( set_intersection2 @ SV161 @ SY419 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[745]) ).

thf(850,plain,
    ! [SV162: $i] :
      ( ( ! [SY420: $i] :
            ( ~ ( ~ ( ! [SY421: $i] :
                        ( ~ ( in @ ( sK10_C @ SY420 @ SV162 ) @ SY421 )
                        | ~ ( in @ SY421 @ SV162 ) )
                    | ~ ( in @ ( sK10_C @ SY420 @ SV162 ) @ SY420 ) )
                | ~ ( ~ ( ~ ( in @ ( sK10_C @ SY420 @ SV162 ) @ ( sK11_SY246 @ SY420 @ SV162 ) )
                        | ~ ( in @ ( sK11_SY246 @ SY420 @ SV162 ) @ SV162 ) )
                    | ( in @ ( sK10_C @ SY420 @ SV162 ) @ SY420 ) ) )
            | ( SY420
              = ( union @ SV162 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[746]) ).

thf(851,plain,
    ! [SV163: $i] :
      ( ( ! [SY422: $i] :
            ( ( SY422
             != ( union @ SV163 ) )
            | ~ ( ~ ! [SY423: $i] :
                      ( ! [SY424: $i] :
                          ( ~ ( in @ SY423 @ SY424 )
                          | ~ ( in @ SY424 @ SV163 ) )
                      | ( in @ SY423 @ SY422 ) )
                | ~ ! [SY425: $i] :
                      ( ~ ( in @ SY425 @ SY422 )
                      | ~ ( ~ ( in @ SY425 @ ( sK9_D @ SY425 @ SY422 @ SV163 ) )
                          | ~ ( in @ ( sK9_D @ SY425 @ SY422 @ SV163 ) @ SV163 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[747]) ).

thf(852,plain,
    ! [SV164: $i] :
      ( ( ! [SY426: $i] :
            ( ( ( set_difference @ SV164 @ SY426 )
             != empty_set )
            | ( subset @ SV164 @ SY426 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[748]) ).

thf(853,plain,
    ! [SV165: $i] :
      ( ( ! [SY427: $i] :
            ( ~ ( subset @ SV165 @ SY427 )
            | ( ( set_difference @ SV165 @ SY427 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[749]) ).

thf(854,plain,
    ! [SV76: $i] :
      ( ( ! [SY358: $i,SY359: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SV76 )
                    | ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY358 )
                    | ~ ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) )
                | ~ ~ ( ~ ( ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SV76 )
                          | ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) )
                      | ~ ( ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY358 )
                          | ( in @ ( sK12_D @ SY359 @ SY358 @ SV76 ) @ SY359 ) ) ) )
            | ( SY359
              = ( set_intersection2 @ SV76 @ SY358 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[750]) ).

thf(855,plain,
    ! [SV76: $i] :
      ( ( ! [SY360: $i,SY361: $i] :
            ( ( SY361
             != ( set_intersection2 @ SV76 @ SY360 ) )
            | ~ ( ~ ! [SY362: $i] :
                      ( ~ ( in @ SY362 @ SV76 )
                      | ~ ( in @ SY362 @ SY360 )
                      | ( in @ SY362 @ SY361 ) )
                | ~ ~ ( ~ ! [SY363: $i] :
                            ( ~ ( in @ SY363 @ SY361 )
                            | ( in @ SY363 @ SV76 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SY361 )
                            | ( in @ SX3 @ SY360 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[751]) ).

thf(856,plain,
    ! [SV166: $i] :
      ( ( ! [SY428: $i] :
            ( ~ ( in @ SV166 @ SY428 )
            | ( subset @ ( singleton @ SV166 ) @ SY428 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[752]) ).

thf(857,plain,
    ! [SV167: $i] :
      ( ( ! [SY429: $i] :
            ( ~ ( subset @ ( singleton @ SV167 ) @ SY429 )
            | ( in @ SV167 @ SY429 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[753]) ).

thf(858,plain,
    ! [SV168: $i] :
      ( ( ! [SY430: $i] :
            ( ~ ( subset @ SV168 @ ( singleton @ SY430 ) )
            | ( SV168 = empty_set )
            | ( SV168
              = ( singleton @ SY430 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[754]) ).

thf(859,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)],[755]) ).

thf(860,plain,
    ! [SV77: $i] :
      ( ( ! [SY365: $i,SY366: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                          | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                           != SV77 ) )
                      | ~ ( ~ ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                          | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                           != SY365 ) ) )
                | ~ ( ( in @ ( sK15_D @ SY366 @ SY365 @ SV77 ) @ SY366 )
                    | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                      = SV77 )
                    | ( ( sK15_D @ SY366 @ SY365 @ SV77 )
                      = SY365 ) ) )
            | ( SY366
              = ( unordered_pair @ SV77 @ SY365 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[756]) ).

thf(861,plain,
    ! [SV77: $i] :
      ( ( ! [SY367: $i,SY368: $i] :
            ( ( SY368
             != ( unordered_pair @ SV77 @ SY367 ) )
            | ~ ( ~ ! [SY369: $i] :
                      ( ~ ( in @ SY369 @ SY368 )
                      | ( SY369 = SV77 )
                      | ( SY369 = SY367 ) )
                | ~ ~ ( ~ ! [SY370: $i] :
                            ( ( SY370 != SV77 )
                            | ( in @ SY370 @ SY368 ) )
                      | ~ ! [SX3: $i] :
                            ( ( SX3 != SY367 )
                            | ( in @ SX3 @ SY368 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[757]) ).

thf(862,plain,
    ( ( sK2_SY237 = empty_set )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[758]) ).

thf(863,plain,
    ! [SV169: $i] :
      ( ( ! [SY431: $i] :
            ( ( ( set_difference @ SV169 @ ( singleton @ SY431 ) )
             != SV169 )
            | ~ ( in @ SY431 @ SV169 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[760]) ).

thf(864,plain,
    ! [SV170: $i] :
      ( ( ! [SY432: $i] :
            ( ( in @ SY432 @ SV170 )
            | ( ( set_difference @ SV170 @ ( singleton @ SY432 ) )
              = SV170 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[761]) ).

thf(865,plain,
    ! [SV171: $i] :
      ( ( ! [SY433: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK24_C @ SY433 @ SV171 ) @ SY433 )
                    | ~ ( subset @ ( sK24_C @ SY433 @ SV171 ) @ SV171 ) )
                | ~ ( ( in @ ( sK24_C @ SY433 @ SV171 ) @ SY433 )
                    | ( subset @ ( sK24_C @ SY433 @ SV171 ) @ SV171 ) ) )
            | ( SY433
              = ( powerset @ SV171 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[762]) ).

thf(866,plain,
    ! [SV172: $i] :
      ( ( ! [SY434: $i] :
            ( ( SY434
             != ( powerset @ SV172 ) )
            | ~ ( ~ ! [SY435: $i] :
                      ( ~ ( in @ SY435 @ SY434 )
                      | ( subset @ SY435 @ SV172 ) )
                | ~ ! [SY436: $i] :
                      ( ~ ( subset @ SY436 @ SV172 )
                      | ( in @ SY436 @ SY434 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[763]) ).

thf(867,plain,
    ! [SV173: $i] :
      ( ( ! [SY437: $i] :
            ( ( ( set_difference @ SV173 @ SY437 )
             != SV173 )
            | ( disjoint @ SV173 @ SY437 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[764]) ).

thf(868,plain,
    ! [SV174: $i] :
      ( ( ! [SY438: $i] :
            ( ~ ( disjoint @ SV174 @ SY438 )
            | ( ( set_difference @ SV174 @ SY438 )
              = SV174 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[765]) ).

thf(869,plain,
    ! [SV2: $i,SV78: $i,SV175: $i] :
      ( ( ( ~ ( in @ SV175 @ SV78 )
          | ( in @ SV175 @ SV2 ) )
        = $true )
      | ( ( element @ SV78 @ ( powerset @ SV2 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[766]) ).

thf(870,plain,
    ! [SV5: $i,SV127: $i] :
      ( ( ( element @ SV127 @ ( powerset @ SV5 ) )
        = $false )
      | ( ( ! [SY393: $i] :
              ( ~ ( element @ SY393 @ SV5 )
              | ( in @ SY393 @ SV127 )
              | ( in @ SY393 @ ( subset_complement @ SV5 @ SV127 ) ) ) )
        = $true )
      | ( ( SV5 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[767]) ).

thf(871,plain,
    ! [SV79: $i,SV6: $i,SV128: $i] :
      ( ( ( element @ SV128 @ ( powerset @ SV6 ) )
        = $false )
      | ( ( ~ ( in @ SV79 @ ( subset_complement @ SV6 @ SV128 ) )
          | ~ ( in @ SV79 @ SV128 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[768]) ).

thf(872,plain,
    ! [SV18: $i,SV86: $i] :
      ( ( ( empty @ SV86 )
        = $true )
      | ( ( in @ SV18 @ SV86 )
        = $true )
      | ( ( element @ SV18 @ SV86 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[775]) ).

thf(873,plain,
    ! [SV21: $i,SV129: $i,SV87: $i] :
      ( ( ( ~ ( element @ SV87 @ ( powerset @ SV129 ) ) )
        = $true )
      | ( ( ~ ( in @ SV21 @ SV87 ) )
        = $true )
      | ( ( element @ SV21 @ SV129 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[776]) ).

thf(874,plain,
    ! [SV22: $i,SV130: $i,SV88: $i] :
      ( ( ( ~ ( element @ SV88 @ ( powerset @ SV130 ) ) )
        = $true )
      | ( ( ~ ( in @ SV22 @ SV88 ) )
        = $true )
      | ( ( ~ ( empty @ SV130 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[777]) ).

thf(875,plain,
    ! [SV90: $i,SV25: $i] :
      ( ( ( in @ SV25 @ SV90 )
        = $false )
      | ( ( disjoint @ ( singleton @ SV25 ) @ SV90 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[779]) ).

thf(876,plain,
    ! [SV92: $i,SV27: $i,SV176: $i] :
      ( ( ( ( in @ SV176 @ SV27 )
          | ( subset @ SV27 @ ( set_difference @ SV92 @ ( singleton @ SV176 ) ) ) )
        = $true )
      | ( ( subset @ SV27 @ SV92 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[780]) ).

thf(877,plain,
    ! [SV139: $i,SV131: $i,SV94: $i,SV29: $i] :
      ( ( ( ~ ( subset @ SV29 @ SV94 )
          | ~ ( subset @ SV131 @ SV139 ) )
        = $true )
      | ( ( subset @ ( cartesian_product2 @ SV29 @ SV131 ) @ ( cartesian_product2 @ SV94 @ SV139 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[782]) ).

thf(878,plain,
    ! [SV132: $i,SV97: $i,SV32: $i] :
      ( ( ( ~ ( subset @ SV32 @ SV97 ) )
        = $true )
      | ( ( ~ ( subset @ SV32 @ SV132 ) )
        = $true )
      | ( ( subset @ SV32 @ ( set_intersection2 @ SV97 @ SV132 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[784]) ).

thf(879,plain,
    ! [SV133: $i,SV98: $i,SV33: $i] :
      ( ( ( ~ ( subset @ SV33 @ SV98 ) )
        = $true )
      | ( ( ~ ( subset @ SV98 @ SV133 ) )
        = $true )
      | ( ( subset @ SV33 @ SV133 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[785]) ).

thf(880,plain,
    ! [SV99: $i,SV177: $i,SV34: $i] :
      ( ( ( subset @ ( set_intersection2 @ SV34 @ SV177 ) @ ( set_intersection2 @ SV99 @ SV177 ) )
        = $true )
      | ( ( subset @ SV34 @ SV99 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[786]) ).

thf(881,plain,
    ! [SV101: $i,SV178: $i,SV36: $i] :
      ( ( ( subset @ ( set_difference @ SV36 @ SV178 ) @ ( set_difference @ SV101 @ SV178 ) )
        = $true )
      | ( ( subset @ SV36 @ SV101 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[788]) ).

thf(882,plain,
    ! [SV108: $i,SV43: $i] :
      ( ( ( subset @ SV43 @ SV108 )
        = $false )
      | ( ( proper_subset @ SV108 @ SV43 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[791]) ).

thf(883,plain,
    ! [SV44: $i,SV134: $i,SV109: $i] :
      ( ( ( ~ ( disjoint @ SV109 @ SV134 ) )
        = $true )
      | ( ( ~ ( subset @ SV44 @ SV109 ) )
        = $true )
      | ( ( disjoint @ SV44 @ SV134 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[792]) ).

thf(884,plain,
    ! [SV135: $i,SV112: $i,SV48: $i] :
      ( ( ( ~ ( subset @ SV48 @ SV112 ) )
        = $true )
      | ( ( ~ ( subset @ SV135 @ SV112 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV48 @ SV135 ) @ SV112 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[794]) ).

thf(885,plain,
    ! [SV140: $i,SV113: $i,SV49: $i] :
      ( ( ( ( singleton @ SV49 )
          = ( unordered_pair @ SV113 @ SV140 ) )
        = $false )
      | ( ( SV49 = SV113 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[795]) ).

thf(886,plain,
    ! [SV136: $i,SV115: $i,SV51: $i] :
      ( ( ( ( singleton @ SV51 )
          = ( unordered_pair @ SV115 @ SV136 ) )
        = $false )
      | ( ( SV115 = SV136 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[797]) ).

thf(887,plain,
    ! [SV52: $i,SV116: $i] :
      ( ( ( in @ SV116 @ SV52 )
        = $false )
      | ( ( in @ SV52 @ SV116 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[798]) ).

thf(888,plain,
    ! [SV121: $i,SV62: $i] :
      ( ( ( in @ SV62 @ SV121 )
        = $false )
      | ( ( empty @ SV121 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[802]) ).

thf(889,plain,
    ! [SV122: $i,SV63: $i] :
      ( ( ( empty @ SV63 )
        = $false )
      | ( ( SV63 = SV122 )
        = $true )
      | ( ( ~ ( empty @ SV122 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[803]) ).

thf(890,plain,
    ! [SV141: $i] :
      ( ( ( in @ ( sK25_B @ SV141 ) @ SV141 )
        = $true )
      | ( ( SV141 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[804]) ).

thf(891,plain,
    ! [SV142: $i] :
      ( ( ( ( SV142 != empty_set ) )
        = $true )
      | ( ( ! [SY395: $i] :
              ~ ( in @ SY395 @ SV142 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[805]) ).

thf(892,plain,
    ! [SV179: $i,SV143: $i] :
      ( ( ( SV143 = SV179 )
        | ~ ( subset @ SV143 @ SV179 )
        | ( proper_subset @ SV143 @ SV179 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[806]) ).

thf(893,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( proper_subset @ SX0 @ SX1 )
            | ( SX0 != SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[807]) ).

thf(894,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ~ ( proper_subset @ SX0 @ SX1 )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[807]) ).

thf(895,plain,
    ! [SV180: $i,SV144: $i] :
      ( ( ~ ( subset @ SV144 @ ( singleton @ SV180 ) )
        | ( SV144 = empty_set )
        | ( SV144
          = ( singleton @ SV180 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[808]) ).

thf(896,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[809]) ).

thf(897,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0
             != ( singleton @ SX1 ) )
            | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[809]) ).

thf(898,plain,
    ! [SV181: $i,SV145: $i] :
      ( ( ~ ( element @ SV145 @ ( powerset @ SV181 ) )
        | ( subset @ SV145 @ SV181 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[810]) ).

thf(899,plain,
    ! [SV182: $i,SV146: $i] :
      ( ( ~ ( subset @ SV146 @ SV182 )
        | ( element @ SV146 @ ( powerset @ SV182 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[811]) ).

thf(900,plain,
    ! [SV183: $i,SV147: $i] :
      ( ( ~ ( subset @ SV147 @ SV183 )
        | ~ ( subset @ SV183 @ SV147 )
        | ( SV147 = SV183 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[812]) ).

thf(901,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 != SX1 )
            | ( subset @ SX0 @ SX1 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[813]) ).

thf(902,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0 != SX1 )
            | ( subset @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[813]) ).

thf(903,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
              | ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) ) )
        = $false )
      | ( ( SV64 = SV123 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[814]) ).

thf(904,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ( ~ ( ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
              | ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) ) )
        = $false )
      | ( ( SV64 = SV123 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[814]) ).

thf(905,plain,
    ! [SV65: $i,SV184: $i] :
      ( ( ! [SY439: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK14_D @ SY439 @ SV184 @ SV65 ) @ SY439 )
                          | ~ ( in @ ( sK14_D @ SY439 @ SV184 @ SV65 ) @ SV65 ) )
                      | ~ ( ~ ( in @ ( sK14_D @ SY439 @ SV184 @ SV65 ) @ SY439 )
                          | ~ ( in @ ( sK14_D @ SY439 @ SV184 @ SV65 ) @ SV184 ) ) )
                | ~ ( ( in @ ( sK14_D @ SY439 @ SV184 @ SV65 ) @ SY439 )
                    | ( in @ ( sK14_D @ SY439 @ SV184 @ SV65 ) @ SV65 )
                    | ( in @ ( sK14_D @ SY439 @ SV184 @ SV65 ) @ SV184 ) ) )
            | ( SY439
              = ( set_union2 @ SV65 @ SV184 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[815]) ).

thf(906,plain,
    ! [SV185: $i,SV65: $i] :
      ( ( ! [SY440: $i] :
            ( ( SY440
             != ( set_union2 @ SV65 @ SV185 ) )
            | ~ ( ~ ! [SY441: $i] :
                      ( ~ ( in @ SY441 @ SY440 )
                      | ( in @ SY441 @ SV65 )
                      | ( in @ SY441 @ SV185 ) )
                | ~ ~ ( ~ ! [SY321: $i] :
                            ( ~ ( in @ SY321 @ SV65 )
                            | ( in @ SY321 @ SY440 ) )
                      | ~ ! [SY443: $i] :
                            ( ~ ( in @ SY443 @ SV185 )
                            | ( in @ SY443 @ SY440 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[816]) ).

thf(907,plain,
    ! [SV186: $i,SV148: $i] :
      ( ( ~ ( in @ SV148 @ SV186 )
        | ( subset @ ( singleton @ SV148 ) @ SV186 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[819]) ).

thf(908,plain,
    ! [SV187: $i,SV149: $i] :
      ( ( ~ ( subset @ ( singleton @ SV149 ) @ SV187 )
        | ( in @ SV149 @ SV187 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[820]) ).

thf(909,plain,
    ! [SV188: $i,SV67: $i] :
      ( ( ~ ( subset @ SV67 @ SV188 )
        | ! [SY444: $i] : ( subset @ ( cartesian_product2 @ SV67 @ SY444 ) @ ( cartesian_product2 @ SV188 @ SY444 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[821]) ).

thf(910,plain,
    ! [SV189: $i,SV67: $i] :
      ( ( ~ ( subset @ SV67 @ SV189 )
        | ! [SY445: $i] : ( subset @ ( cartesian_product2 @ SY445 @ SV67 ) @ ( cartesian_product2 @ SY445 @ SV189 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[822]) ).

thf(911,plain,
    ! [SV150: $i,SV190: $i] :
      ( ( ~ ( ~ ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV150 )
            | ~ ~ ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV190 ) )
        | ( subset @ SV150 @ SV190 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[823]) ).

thf(912,plain,
    ! [SV191: $i,SV151: $i] :
      ( ( ~ ( subset @ SV151 @ SV191 )
        | ! [SY446: $i] :
            ( ~ ( in @ SY446 @ SV151 )
            | ( in @ SY446 @ SV191 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[824]) ).

thf(913,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( empty @ SX0 )
            | ! [SX1: $i] :
                ( ~ ( element @ SX1 @ SX0 )
                | ( in @ SX1 @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[825]) ).

thf(914,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( empty @ SX0 )
            | ! [SX1: $i] :
                ( ~ ( in @ SX1 @ SX0 )
                | ( element @ SX1 @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[825]) ).

thf(915,plain,
    ( ( ~ ! [SX0: $i] :
            ( ~ ( empty @ SX0 )
            | ! [SX1: $i] :
                ( ~ ( element @ SX1 @ SX0 )
                | ( empty @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[826]) ).

thf(916,plain,
    ( ( ~ ! [SX0: $i] :
            ( ~ ( empty @ SX0 )
            | ! [SX1: $i] :
                ( ~ ( empty @ SX1 )
                | ( element @ SX1 @ SX0 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[826]) ).

thf(917,plain,
    ! [SV68: $i,SV192: $i] :
      ( ( ~ ( subset @ SV192 @ ( sK19_B @ SV68 ) )
        | ( are_equipotent @ SV192 @ ( sK19_B @ SV68 ) )
        | ( in @ SV192 @ ( sK19_B @ SV68 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[827]) ).

thf(918,plain,
    ! [SV68: $i] :
      ( ( ~ ! [SY328: $i] :
              ( ~ ( in @ SY328 @ ( sK19_B @ SV68 ) )
              | ( in @ ( powerset @ SY328 ) @ ( sK19_B @ SV68 ) ) )
        | ~ ~ ( ~ ! [SY329: $i,SY330: $i] :
                    ( ~ ( in @ SY329 @ ( sK19_B @ SV68 ) )
                    | ~ ( subset @ SY330 @ SY329 )
                    | ( in @ SY330 @ ( sK19_B @ SV68 ) ) )
              | ~ ( in @ SV68 @ ( sK19_B @ SV68 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[828]) ).

thf(919,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ~ ( ~ ( ( ( sK16_C @ SV193 @ SV152 )
                 != SV152 )
                | ~ ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) )
            | ~ ( ( ( sK16_C @ SV193 @ SV152 )
                  = SV152 )
                | ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) ) )
        | ( SV193
          = ( singleton @ SV152 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[829]) ).

thf(920,plain,
    ! [SV153: $i,SV194: $i] :
      ( ( ( SV194
         != ( singleton @ SV153 ) )
        | ~ ( ~ ! [SY447: $i] :
                  ( ( SY447 != SV153 )
                  | ( in @ SY447 @ SV194 ) )
            | ~ ! [SY448: $i] :
                  ( ~ ( in @ SY448 @ SV194 )
                  | ( SY448 = SV153 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[830]) ).

thf(921,plain,
    ! [SV124: $i,SV69: $i] :
      ( ( ( ~ ! [SY387: $i] :
                ( ~ ( element @ SY387 @ ( powerset @ ( powerset @ SV69 ) ) )
                | ~ ( ~ ( element @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
                    | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                              | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) )
                          | ~ ( ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                              | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
                | ( SY387
                  = ( complements_of_subsets @ SV69 @ SV124 ) ) )
          | ~ ! [SY388: $i] :
                ( ~ ( element @ SY388 @ ( powerset @ ( powerset @ SV69 ) ) )
                | ( SY388
                 != ( complements_of_subsets @ SV69 @ SV124 ) )
                | ~ ( ~ ! [SY389: $i] :
                          ( ~ ( element @ SY389 @ ( powerset @ SV69 ) )
                          | ~ ( in @ SY389 @ SY388 )
                          | ( in @ ( subset_complement @ SV69 @ SY389 ) @ SV124 ) )
                    | ~ ! [SY390: $i] :
                          ( ~ ( element @ SY390 @ ( powerset @ SV69 ) )
                          | ~ ( in @ ( subset_complement @ SV69 @ SY390 ) @ SV124 )
                          | ( in @ SY390 @ SY388 ) ) ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[831]) ).

thf(922,plain,
    ! [SV195: $i,SV70: $i] :
      ( ( ! [SY449: $i] :
            ( ~ ( in @ SV70 @ SY449 )
            | ~ ( in @ SV195 @ SY449 )
            | ( subset @ ( unordered_pair @ SV70 @ SV195 ) @ SY449 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[832]) ).

thf(923,plain,
    ! [SV70: $i] :
      ( ( ~ ! [SY338: $i,SY339: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV70 @ SY338 ) @ SY339 )
              | ( in @ SV70 @ SY339 ) )
        | ~ ! [SY340: $i,SY341: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV70 @ SY340 ) @ SY341 )
              | ( in @ SY340 @ SY341 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[833]) ).

thf(924,plain,
    ! [SV71: $i,SV196: $i] :
      ( ( ~ ( subset @ SV196 @ ( sK3_B @ SV71 ) )
        | ( are_equipotent @ SV196 @ ( sK3_B @ SV71 ) )
        | ( in @ SV196 @ ( sK3_B @ SV71 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[834]) ).

thf(925,plain,
    ! [SV71: $i] :
      ( ( ~ ! [SY343: $i] :
              ( ~ ( ~ ! [SY344: $i] :
                        ( ~ ( subset @ SY344 @ SY343 )
                        | ( in @ SY344 @ ( sK4_SY240 @ SY343 @ SV71 ) ) )
                  | ~ ( in @ ( sK4_SY240 @ SY343 @ SV71 ) @ ( sK3_B @ SV71 ) ) )
              | ~ ( in @ SY343 @ ( sK3_B @ SV71 ) ) )
        | ~ ~ ( ~ ! [SY345: $i,SY346: $i] :
                    ( ~ ( in @ SY345 @ ( sK3_B @ SV71 ) )
                    | ~ ( subset @ SY346 @ SY345 )
                    | ( in @ SY346 @ ( sK3_B @ SV71 ) ) )
              | ~ ( in @ SV71 @ ( sK3_B @ SV71 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[835]) ).

thf(926,plain,
    ! [SV72: $i,SV197: $i] :
      ( ( ! [SY450: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK8_D @ SY450 @ SV197 @ SV72 ) @ SV72 )
                    | ( in @ ( sK8_D @ SY450 @ SV197 @ SV72 ) @ SV197 )
                    | ~ ( in @ ( sK8_D @ SY450 @ SV197 @ SV72 ) @ SY450 ) )
                | ~ ~ ( ~ ( ( in @ ( sK8_D @ SY450 @ SV197 @ SV72 ) @ SV72 )
                          | ( in @ ( sK8_D @ SY450 @ SV197 @ SV72 ) @ SY450 ) )
                      | ~ ( ~ ( in @ ( sK8_D @ SY450 @ SV197 @ SV72 ) @ SV197 )
                          | ( in @ ( sK8_D @ SY450 @ SV197 @ SV72 ) @ SY450 ) ) ) )
            | ( SY450
              = ( set_difference @ SV72 @ SV197 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[836]) ).

thf(927,plain,
    ! [SV198: $i,SV72: $i] :
      ( ( ! [SY451: $i] :
            ( ( SY451
             != ( set_difference @ SV72 @ SV198 ) )
            | ~ ( ~ ! [SY452: $i] :
                      ( ~ ( in @ SY452 @ SV72 )
                      | ( in @ SY452 @ SV198 )
                      | ( in @ SY452 @ SY451 ) )
                | ~ ~ ( ~ ! [SY352: $i] :
                            ( ~ ( in @ SY352 @ SY451 )
                            | ( in @ SY352 @ SV72 ) )
                      | ~ ! [SY454: $i] :
                            ( ~ ( in @ SY454 @ SY451 )
                            | ~ ( in @ SY454 @ SV198 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[837]) ).

thf(928,plain,
    ! [SV199: $i,SV154: $i] :
      ( ( ( disjoint @ SV154 @ SV199 )
        | ( in @ ( sK17_C @ SV199 @ SV154 ) @ ( set_intersection2 @ SV154 @ SV199 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[838]) ).

thf(929,plain,
    ! [SV200: $i,SV155: $i] :
      ( ( ! [SY455: $i] :
            ~ ( in @ SY455 @ ( set_intersection2 @ SV155 @ SV200 ) )
        | ~ ( disjoint @ SV155 @ SV200 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[839]) ).

thf(930,plain,
    ! [SV73: $i,SV125: $i] :
      ( ( ( ~ ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV73 ) )
        = $false )
      | ( ( element @ SV73 @ ( powerset @ SV125 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[840]) ).

thf(931,plain,
    ! [SV73: $i,SV125: $i] :
      ( ( ( ~ ~ ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV125 ) )
        = $false )
      | ( ( element @ SV73 @ ( powerset @ SV125 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[840]) ).

thf(932,plain,
    ! [SV74: $i] :
      ( ( ( element @ ( sK21_B @ SV74 ) @ ( powerset @ SV74 ) )
        = $true )
      | ( ( empty @ SV74 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[841]) ).

thf(933,plain,
    ! [SV74: $i] :
      ( ( ( ~ ( empty @ ( sK21_B @ SV74 ) ) )
        = $true )
      | ( ( empty @ SV74 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[842]) ).

thf(934,plain,
    ! [SV201: $i,SV156: $i] :
      ( ( ( disjoint @ SV156 @ SV201 )
        | ~ ( ~ ( in @ ( sK18_C @ SV201 @ SV156 ) @ SV156 )
            | ~ ( in @ ( sK18_C @ SV201 @ SV156 ) @ SV201 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[843]) ).

thf(935,plain,
    ! [SV202: $i,SV157: $i] :
      ( ( ! [SY456: $i] :
            ( ~ ( in @ SY456 @ SV157 )
            | ~ ( in @ SY456 @ SV202 ) )
        | ~ ( disjoint @ SV157 @ SV202 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[844]) ).

thf(936,plain,
    ! [SV126: $i,SV75: $i] :
      ( ( ( ~ ! [SY391: $i] :
                ( ~ ( element @ SY391 @ ( powerset @ SV75 ) )
                | ~ ( disjoint @ SV126 @ SY391 )
                | ( subset @ SV126 @ ( subset_complement @ SV75 @ SY391 ) ) )
          | ~ ! [SY392: $i] :
                ( ~ ( element @ SY392 @ ( powerset @ SV75 ) )
                | ~ ( subset @ SV126 @ ( subset_complement @ SV75 @ SY392 ) )
                | ( disjoint @ SV126 @ SY392 ) ) )
        = $false )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[845]) ).

thf(937,plain,
    ! [SV203: $i,SV158: $i] :
      ( ( ( ( set_difference @ SV158 @ SV203 )
         != empty_set )
        | ( subset @ SV158 @ SV203 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[846]) ).

thf(938,plain,
    ! [SV204: $i,SV159: $i] :
      ( ( ~ ( subset @ SV159 @ SV204 )
        | ( ( set_difference @ SV159 @ SV204 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[847]) ).

thf(939,plain,
    ! [SV205: $i,SV160: $i] :
      ( ( ( ( set_intersection2 @ SV160 @ SV205 )
         != empty_set )
        | ( disjoint @ SV160 @ SV205 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[848]) ).

thf(940,plain,
    ! [SV206: $i,SV161: $i] :
      ( ( ~ ( disjoint @ SV161 @ SV206 )
        | ( ( set_intersection2 @ SV161 @ SV206 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[849]) ).

thf(941,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ~ ( ~ ( ! [SY457: $i] :
                    ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SY457 )
                    | ~ ( in @ SY457 @ SV162 ) )
                | ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) )
            | ~ ( ~ ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ ( sK11_SY246 @ SV207 @ SV162 ) )
                    | ~ ( in @ ( sK11_SY246 @ SV207 @ SV162 ) @ SV162 ) )
                | ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) ) )
        | ( SV207
          = ( union @ SV162 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[850]) ).

thf(942,plain,
    ! [SV163: $i,SV208: $i] :
      ( ( ( SV208
         != ( union @ SV163 ) )
        | ~ ( ~ ! [SY458: $i] :
                  ( ! [SY424: $i] :
                      ( ~ ( in @ SY458 @ SY424 )
                      | ~ ( in @ SY424 @ SV163 ) )
                  | ( in @ SY458 @ SV208 ) )
            | ~ ! [SY460: $i] :
                  ( ~ ( in @ SY460 @ SV208 )
                  | ~ ( ~ ( in @ SY460 @ ( sK9_D @ SY460 @ SV208 @ SV163 ) )
                      | ~ ( in @ ( sK9_D @ SY460 @ SV208 @ SV163 ) @ SV163 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[851]) ).

thf(943,plain,
    ! [SV209: $i,SV164: $i] :
      ( ( ( ( set_difference @ SV164 @ SV209 )
         != empty_set )
        | ( subset @ SV164 @ SV209 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[852]) ).

thf(944,plain,
    ! [SV210: $i,SV165: $i] :
      ( ( ~ ( subset @ SV165 @ SV210 )
        | ( ( set_difference @ SV165 @ SV210 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[853]) ).

thf(945,plain,
    ! [SV76: $i,SV211: $i] :
      ( ( ! [SY461: $i] :
            ( ~ ( ~ ( ~ ( in @ ( sK12_D @ SY461 @ SV211 @ SV76 ) @ SV76 )
                    | ~ ( in @ ( sK12_D @ SY461 @ SV211 @ SV76 ) @ SV211 )
                    | ~ ( in @ ( sK12_D @ SY461 @ SV211 @ SV76 ) @ SY461 ) )
                | ~ ~ ( ~ ( ( in @ ( sK12_D @ SY461 @ SV211 @ SV76 ) @ SV76 )
                          | ( in @ ( sK12_D @ SY461 @ SV211 @ SV76 ) @ SY461 ) )
                      | ~ ( ( in @ ( sK12_D @ SY461 @ SV211 @ SV76 ) @ SV211 )
                          | ( in @ ( sK12_D @ SY461 @ SV211 @ SV76 ) @ SY461 ) ) ) )
            | ( SY461
              = ( set_intersection2 @ SV76 @ SV211 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[854]) ).

thf(946,plain,
    ! [SV212: $i,SV76: $i] :
      ( ( ! [SY462: $i] :
            ( ( SY462
             != ( set_intersection2 @ SV76 @ SV212 ) )
            | ~ ( ~ ! [SY463: $i] :
                      ( ~ ( in @ SY463 @ SV76 )
                      | ~ ( in @ SY463 @ SV212 )
                      | ( in @ SY463 @ SY462 ) )
                | ~ ~ ( ~ ! [SY363: $i] :
                            ( ~ ( in @ SY363 @ SY462 )
                            | ( in @ SY363 @ SV76 ) )
                      | ~ ! [SY465: $i] :
                            ( ~ ( in @ SY465 @ SY462 )
                            | ( in @ SY465 @ SV212 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[855]) ).

thf(947,plain,
    ! [SV213: $i,SV166: $i] :
      ( ( ~ ( in @ SV166 @ SV213 )
        | ( subset @ ( singleton @ SV166 ) @ SV213 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[856]) ).

thf(948,plain,
    ! [SV214: $i,SV167: $i] :
      ( ( ~ ( subset @ ( singleton @ SV167 ) @ SV214 )
        | ( in @ SV167 @ SV214 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[857]) ).

thf(949,plain,
    ! [SV215: $i,SV168: $i] :
      ( ( ~ ( subset @ SV168 @ ( singleton @ SV215 ) )
        | ( SV168 = empty_set )
        | ( SV168
          = ( singleton @ SV215 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[858]) ).

thf(950,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[859]) ).

thf(951,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX0
             != ( singleton @ SX1 ) )
            | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[859]) ).

thf(952,plain,
    ! [SV77: $i,SV216: $i] :
      ( ( ! [SY466: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK15_D @ SY466 @ SV216 @ SV77 ) @ SY466 )
                          | ( ( sK15_D @ SY466 @ SV216 @ SV77 )
                           != SV77 ) )
                      | ~ ( ~ ( in @ ( sK15_D @ SY466 @ SV216 @ SV77 ) @ SY466 )
                          | ( ( sK15_D @ SY466 @ SV216 @ SV77 )
                           != SV216 ) ) )
                | ~ ( ( in @ ( sK15_D @ SY466 @ SV216 @ SV77 ) @ SY466 )
                    | ( ( sK15_D @ SY466 @ SV216 @ SV77 )
                      = SV77 )
                    | ( ( sK15_D @ SY466 @ SV216 @ SV77 )
                      = SV216 ) ) )
            | ( SY466
              = ( unordered_pair @ SV77 @ SV216 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[860]) ).

thf(953,plain,
    ! [SV217: $i,SV77: $i] :
      ( ( ! [SY467: $i] :
            ( ( SY467
             != ( unordered_pair @ SV77 @ SV217 ) )
            | ~ ( ~ ! [SY468: $i] :
                      ( ~ ( in @ SY468 @ SY467 )
                      | ( SY468 = SV77 )
                      | ( SY468 = SV217 ) )
                | ~ ~ ( ~ ! [SY370: $i] :
                            ( ( SY370 != SV77 )
                            | ( in @ SY370 @ SY467 ) )
                      | ~ ! [SY470: $i] :
                            ( ( SY470 != SV217 )
                            | ( in @ SY470 @ SY467 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[861]) ).

thf(954,plain,
    ! [SV218: $i,SV169: $i] :
      ( ( ( ( set_difference @ SV169 @ ( singleton @ SV218 ) )
         != SV169 )
        | ~ ( in @ SV218 @ SV169 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[863]) ).

thf(955,plain,
    ! [SV170: $i,SV219: $i] :
      ( ( ( in @ SV219 @ SV170 )
        | ( ( set_difference @ SV170 @ ( singleton @ SV219 ) )
          = SV170 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[864]) ).

thf(956,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
                | ~ ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) )
            | ~ ( ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
                | ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) ) )
        | ( SV220
          = ( powerset @ SV171 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[865]) ).

thf(957,plain,
    ! [SV172: $i,SV221: $i] :
      ( ( ( SV221
         != ( powerset @ SV172 ) )
        | ~ ( ~ ! [SY471: $i] :
                  ( ~ ( in @ SY471 @ SV221 )
                  | ( subset @ SY471 @ SV172 ) )
            | ~ ! [SY472: $i] :
                  ( ~ ( subset @ SY472 @ SV172 )
                  | ( in @ SY472 @ SV221 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[866]) ).

thf(958,plain,
    ! [SV222: $i,SV173: $i] :
      ( ( ( ( set_difference @ SV173 @ SV222 )
         != SV173 )
        | ( disjoint @ SV173 @ SV222 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[867]) ).

thf(959,plain,
    ! [SV223: $i,SV174: $i] :
      ( ( ~ ( disjoint @ SV174 @ SV223 )
        | ( ( set_difference @ SV174 @ SV223 )
          = SV174 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[868]) ).

thf(960,plain,
    ! [SV2: $i,SV78: $i,SV175: $i] :
      ( ( ( ~ ( in @ SV175 @ SV78 ) )
        = $true )
      | ( ( in @ SV175 @ SV2 )
        = $true )
      | ( ( element @ SV78 @ ( powerset @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[869]) ).

thf(961,plain,
    ! [SV127: $i,SV5: $i,SV224: $i] :
      ( ( ( ~ ( element @ SV224 @ SV5 )
          | ( in @ SV224 @ SV127 )
          | ( in @ SV224 @ ( subset_complement @ SV5 @ SV127 ) ) )
        = $true )
      | ( ( element @ SV127 @ ( powerset @ SV5 ) )
        = $false )
      | ( ( SV5 = empty_set )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[870]) ).

thf(962,plain,
    ! [SV128: $i,SV6: $i,SV79: $i] :
      ( ( ( ~ ( in @ SV79 @ ( subset_complement @ SV6 @ SV128 ) ) )
        = $true )
      | ( ( ~ ( in @ SV79 @ SV128 ) )
        = $true )
      | ( ( element @ SV128 @ ( powerset @ SV6 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[871]) ).

thf(963,plain,
    ! [SV21: $i,SV129: $i,SV87: $i] :
      ( ( ( element @ SV87 @ ( powerset @ SV129 ) )
        = $false )
      | ( ( ~ ( in @ SV21 @ SV87 ) )
        = $true )
      | ( ( element @ SV21 @ SV129 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[873]) ).

thf(964,plain,
    ! [SV22: $i,SV130: $i,SV88: $i] :
      ( ( ( element @ SV88 @ ( powerset @ SV130 ) )
        = $false )
      | ( ( ~ ( in @ SV22 @ SV88 ) )
        = $true )
      | ( ( ~ ( empty @ SV130 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[874]) ).

thf(965,plain,
    ! [SV92: $i,SV27: $i,SV176: $i] :
      ( ( ( in @ SV176 @ SV27 )
        = $true )
      | ( ( subset @ SV27 @ ( set_difference @ SV92 @ ( singleton @ SV176 ) ) )
        = $true )
      | ( ( subset @ SV27 @ SV92 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[876]) ).

thf(966,plain,
    ! [SV139: $i,SV131: $i,SV94: $i,SV29: $i] :
      ( ( ( ~ ( subset @ SV29 @ SV94 ) )
        = $true )
      | ( ( ~ ( subset @ SV131 @ SV139 ) )
        = $true )
      | ( ( subset @ ( cartesian_product2 @ SV29 @ SV131 ) @ ( cartesian_product2 @ SV94 @ SV139 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[877]) ).

thf(967,plain,
    ! [SV132: $i,SV97: $i,SV32: $i] :
      ( ( ( subset @ SV32 @ SV97 )
        = $false )
      | ( ( ~ ( subset @ SV32 @ SV132 ) )
        = $true )
      | ( ( subset @ SV32 @ ( set_intersection2 @ SV97 @ SV132 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[878]) ).

thf(968,plain,
    ! [SV133: $i,SV98: $i,SV33: $i] :
      ( ( ( subset @ SV33 @ SV98 )
        = $false )
      | ( ( ~ ( subset @ SV98 @ SV133 ) )
        = $true )
      | ( ( subset @ SV33 @ SV133 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[879]) ).

thf(969,plain,
    ! [SV44: $i,SV134: $i,SV109: $i] :
      ( ( ( disjoint @ SV109 @ SV134 )
        = $false )
      | ( ( ~ ( subset @ SV44 @ SV109 ) )
        = $true )
      | ( ( disjoint @ SV44 @ SV134 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[883]) ).

thf(970,plain,
    ! [SV135: $i,SV112: $i,SV48: $i] :
      ( ( ( subset @ SV48 @ SV112 )
        = $false )
      | ( ( ~ ( subset @ SV135 @ SV112 ) )
        = $true )
      | ( ( subset @ ( set_union2 @ SV48 @ SV135 ) @ SV112 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[884]) ).

thf(971,plain,
    ! [SV63: $i,SV122: $i] :
      ( ( ( empty @ SV122 )
        = $false )
      | ( ( SV63 = SV122 )
        = $true )
      | ( ( empty @ SV63 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[889]) ).

thf(972,plain,
    ! [SV142: $i] :
      ( ( ( SV142 = empty_set )
        = $false )
      | ( ( ! [SY395: $i] :
              ~ ( in @ SY395 @ SV142 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[891]) ).

thf(973,plain,
    ! [SV179: $i,SV143: $i] :
      ( ( ( ( SV143 = SV179 )
          | ~ ( subset @ SV143 @ SV179 ) )
        = $true )
      | ( ( proper_subset @ SV143 @ SV179 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[892]) ).

thf(974,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( proper_subset @ SX0 @ SX1 )
          | ( SX0 != SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[893]) ).

thf(975,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( proper_subset @ SX0 @ SX1 )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[894]) ).

thf(976,plain,
    ! [SV180: $i,SV144: $i] :
      ( ( ( ~ ( subset @ SV144 @ ( singleton @ SV180 ) ) )
        = $true )
      | ( ( ( SV144 = empty_set )
          | ( SV144
            = ( singleton @ SV180 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[895]) ).

thf(977,plain,
    ( ( ! [SX0: $i] :
          ( ( SX0 != empty_set )
          | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[896]) ).

thf(978,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0
           != ( singleton @ SX1 ) )
          | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[897]) ).

thf(979,plain,
    ! [SV181: $i,SV145: $i] :
      ( ( ( ~ ( element @ SV145 @ ( powerset @ SV181 ) ) )
        = $true )
      | ( ( subset @ SV145 @ SV181 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[898]) ).

thf(980,plain,
    ! [SV182: $i,SV146: $i] :
      ( ( ( ~ ( subset @ SV146 @ SV182 ) )
        = $true )
      | ( ( element @ SV146 @ ( powerset @ SV182 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[899]) ).

thf(981,plain,
    ! [SV183: $i,SV147: $i] :
      ( ( ( ~ ( subset @ SV147 @ SV183 )
          | ~ ( subset @ SV183 @ SV147 ) )
        = $true )
      | ( ( SV147 = SV183 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[900]) ).

thf(982,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0 != SX1 )
          | ( subset @ SX0 @ SX1 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[901]) ).

thf(983,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0 != SX1 )
          | ( subset @ SX1 @ SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[902]) ).

thf(984,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ( ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
          | ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) )
        = $true )
      | ( ( SV64 = SV123 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[903]) ).

thf(985,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ( ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
          | ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) )
        = $true )
      | ( ( SV64 = SV123 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[904]) ).

thf(986,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                      | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 ) )
                  | ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                      | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) )
            | ~ ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 )
                | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) )
        | ( SV225
          = ( set_union2 @ SV65 @ SV184 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[905]) ).

thf(987,plain,
    ! [SV185: $i,SV65: $i,SV226: $i] :
      ( ( ( SV226
         != ( set_union2 @ SV65 @ SV185 ) )
        | ~ ( ~ ! [SY473: $i] :
                  ( ~ ( in @ SY473 @ SV226 )
                  | ( in @ SY473 @ SV65 )
                  | ( in @ SY473 @ SV185 ) )
            | ~ ~ ( ~ ! [SY474: $i] :
                        ( ~ ( in @ SY474 @ SV65 )
                        | ( in @ SY474 @ SV226 ) )
                  | ~ ! [SY475: $i] :
                        ( ~ ( in @ SY475 @ SV185 )
                        | ( in @ SY475 @ SV226 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[906]) ).

thf(988,plain,
    ! [SV186: $i,SV148: $i] :
      ( ( ( ~ ( in @ SV148 @ SV186 ) )
        = $true )
      | ( ( subset @ ( singleton @ SV148 ) @ SV186 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[907]) ).

thf(989,plain,
    ! [SV187: $i,SV149: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV149 ) @ SV187 ) )
        = $true )
      | ( ( in @ SV149 @ SV187 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[908]) ).

thf(990,plain,
    ! [SV188: $i,SV67: $i] :
      ( ( ( ~ ( subset @ SV67 @ SV188 ) )
        = $true )
      | ( ( ! [SY444: $i] : ( subset @ ( cartesian_product2 @ SV67 @ SY444 ) @ ( cartesian_product2 @ SV188 @ SY444 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[909]) ).

thf(991,plain,
    ! [SV189: $i,SV67: $i] :
      ( ( ( ~ ( subset @ SV67 @ SV189 ) )
        = $true )
      | ( ( ! [SY445: $i] : ( subset @ ( cartesian_product2 @ SY445 @ SV67 ) @ ( cartesian_product2 @ SY445 @ SV189 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[910]) ).

thf(992,plain,
    ! [SV150: $i,SV190: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV150 )
              | ~ ~ ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV190 ) ) )
        = $true )
      | ( ( subset @ SV150 @ SV190 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[911]) ).

thf(993,plain,
    ! [SV191: $i,SV151: $i] :
      ( ( ( ~ ( subset @ SV151 @ SV191 ) )
        = $true )
      | ( ( ! [SY446: $i] :
              ( ~ ( in @ SY446 @ SV151 )
              | ( in @ SY446 @ SV191 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[912]) ).

thf(994,plain,
    ( ( ! [SX0: $i] :
          ( ( empty @ SX0 )
          | ! [SX1: $i] :
              ( ~ ( element @ SX1 @ SX0 )
              | ( in @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[913]) ).

thf(995,plain,
    ( ( ! [SX0: $i] :
          ( ( empty @ SX0 )
          | ! [SX1: $i] :
              ( ~ ( in @ SX1 @ SX0 )
              | ( element @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[914]) ).

thf(996,plain,
    ( ( ! [SX0: $i] :
          ( ~ ( empty @ SX0 )
          | ! [SX1: $i] :
              ( ~ ( element @ SX1 @ SX0 )
              | ( empty @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[915]) ).

thf(997,plain,
    ( ( ! [SX0: $i] :
          ( ~ ( empty @ SX0 )
          | ! [SX1: $i] :
              ( ~ ( empty @ SX1 )
              | ( element @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[916]) ).

thf(998,plain,
    ! [SV68: $i,SV192: $i] :
      ( ( ( ~ ( subset @ SV192 @ ( sK19_B @ SV68 ) )
          | ( are_equipotent @ SV192 @ ( sK19_B @ SV68 ) ) )
        = $true )
      | ( ( in @ SV192 @ ( sK19_B @ SV68 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[917]) ).

thf(999,plain,
    ! [SV68: $i] :
      ( ( ~ ! [SY328: $i] :
              ( ~ ( in @ SY328 @ ( sK19_B @ SV68 ) )
              | ( in @ ( powerset @ SY328 ) @ ( sK19_B @ SV68 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[918]) ).

thf(1000,plain,
    ! [SV68: $i] :
      ( ( ~ ~ ( ~ ! [SY329: $i,SY330: $i] :
                    ( ~ ( in @ SY329 @ ( sK19_B @ SV68 ) )
                    | ~ ( subset @ SY330 @ SY329 )
                    | ( in @ SY330 @ ( sK19_B @ SV68 ) ) )
              | ~ ( in @ SV68 @ ( sK19_B @ SV68 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[918]) ).

thf(1001,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ( ~ ( ~ ( ( ( sK16_C @ SV193 @ SV152 )
                   != SV152 )
                  | ~ ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) )
              | ~ ( ( ( sK16_C @ SV193 @ SV152 )
                    = SV152 )
                  | ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) ) ) )
        = $true )
      | ( ( SV193
          = ( singleton @ SV152 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[919]) ).

thf(1002,plain,
    ! [SV153: $i,SV194: $i] :
      ( ( ( ( SV194
           != ( singleton @ SV153 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY447: $i] :
                    ( ( SY447 != SV153 )
                    | ( in @ SY447 @ SV194 ) )
              | ~ ! [SY448: $i] :
                    ( ~ ( in @ SY448 @ SV194 )
                    | ( SY448 = SV153 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[920]) ).

thf(1003,plain,
    ! [SV124: $i,SV69: $i] :
      ( ( ( ~ ! [SY387: $i] :
                ( ~ ( element @ SY387 @ ( powerset @ ( powerset @ SV69 ) ) )
                | ~ ( ~ ( element @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
                    | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                              | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) )
                          | ~ ( ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                              | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
                | ( SY387
                  = ( complements_of_subsets @ SV69 @ SV124 ) ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[921]) ).

thf(1004,plain,
    ! [SV124: $i,SV69: $i] :
      ( ( ( ~ ! [SY388: $i] :
                ( ~ ( element @ SY388 @ ( powerset @ ( powerset @ SV69 ) ) )
                | ( SY388
                 != ( complements_of_subsets @ SV69 @ SV124 ) )
                | ~ ( ~ ! [SY389: $i] :
                          ( ~ ( element @ SY389 @ ( powerset @ SV69 ) )
                          | ~ ( in @ SY389 @ SY388 )
                          | ( in @ ( subset_complement @ SV69 @ SY389 ) @ SV124 ) )
                    | ~ ! [SY390: $i] :
                          ( ~ ( element @ SY390 @ ( powerset @ SV69 ) )
                          | ~ ( in @ ( subset_complement @ SV69 @ SY390 ) @ SV124 )
                          | ( in @ SY390 @ SY388 ) ) ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[921]) ).

thf(1005,plain,
    ! [SV195: $i,SV227: $i,SV70: $i] :
      ( ( ~ ( in @ SV70 @ SV227 )
        | ~ ( in @ SV195 @ SV227 )
        | ( subset @ ( unordered_pair @ SV70 @ SV195 ) @ SV227 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[922]) ).

thf(1006,plain,
    ! [SV70: $i] :
      ( ( ~ ! [SY338: $i,SY339: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV70 @ SY338 ) @ SY339 )
              | ( in @ SV70 @ SY339 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[923]) ).

thf(1007,plain,
    ! [SV70: $i] :
      ( ( ~ ! [SY340: $i,SY341: $i] :
              ( ~ ( subset @ ( unordered_pair @ SV70 @ SY340 ) @ SY341 )
              | ( in @ SY340 @ SY341 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[923]) ).

thf(1008,plain,
    ! [SV71: $i,SV196: $i] :
      ( ( ( ~ ( subset @ SV196 @ ( sK3_B @ SV71 ) )
          | ( are_equipotent @ SV196 @ ( sK3_B @ SV71 ) ) )
        = $true )
      | ( ( in @ SV196 @ ( sK3_B @ SV71 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[924]) ).

thf(1009,plain,
    ! [SV71: $i] :
      ( ( ~ ! [SY343: $i] :
              ( ~ ( ~ ! [SY344: $i] :
                        ( ~ ( subset @ SY344 @ SY343 )
                        | ( in @ SY344 @ ( sK4_SY240 @ SY343 @ SV71 ) ) )
                  | ~ ( in @ ( sK4_SY240 @ SY343 @ SV71 ) @ ( sK3_B @ SV71 ) ) )
              | ~ ( in @ SY343 @ ( sK3_B @ SV71 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[925]) ).

thf(1010,plain,
    ! [SV71: $i] :
      ( ( ~ ~ ( ~ ! [SY345: $i,SY346: $i] :
                    ( ~ ( in @ SY345 @ ( sK3_B @ SV71 ) )
                    | ~ ( subset @ SY346 @ SY345 )
                    | ( in @ SY346 @ ( sK3_B @ SV71 ) ) )
              | ~ ( in @ SV71 @ ( sK3_B @ SV71 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[925]) ).

thf(1011,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
                | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
                | ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
            | ~ ~ ( ~ ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
                      | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
                  | ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
                      | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) ) ) )
        | ( SV228
          = ( set_difference @ SV72 @ SV197 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[926]) ).

thf(1012,plain,
    ! [SV198: $i,SV72: $i,SV229: $i] :
      ( ( ( SV229
         != ( set_difference @ SV72 @ SV198 ) )
        | ~ ( ~ ! [SY476: $i] :
                  ( ~ ( in @ SY476 @ SV72 )
                  | ( in @ SY476 @ SV198 )
                  | ( in @ SY476 @ SV229 ) )
            | ~ ~ ( ~ ! [SY477: $i] :
                        ( ~ ( in @ SY477 @ SV229 )
                        | ( in @ SY477 @ SV72 ) )
                  | ~ ! [SY478: $i] :
                        ( ~ ( in @ SY478 @ SV229 )
                        | ~ ( in @ SY478 @ SV198 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[927]) ).

thf(1013,plain,
    ! [SV199: $i,SV154: $i] :
      ( ( ( disjoint @ SV154 @ SV199 )
        = $true )
      | ( ( in @ ( sK17_C @ SV199 @ SV154 ) @ ( set_intersection2 @ SV154 @ SV199 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[928]) ).

thf(1014,plain,
    ! [SV200: $i,SV155: $i] :
      ( ( ( ! [SY455: $i] :
              ~ ( in @ SY455 @ ( set_intersection2 @ SV155 @ SV200 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV155 @ SV200 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[929]) ).

thf(1015,plain,
    ! [SV73: $i,SV125: $i] :
      ( ( ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV73 )
        = $true )
      | ( ( element @ SV73 @ ( powerset @ SV125 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[930]) ).

thf(1016,plain,
    ! [SV73: $i,SV125: $i] :
      ( ( ( ~ ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV125 ) )
        = $true )
      | ( ( element @ SV73 @ ( powerset @ SV125 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[931]) ).

thf(1017,plain,
    ! [SV74: $i] :
      ( ( ( empty @ ( sK21_B @ SV74 ) )
        = $false )
      | ( ( empty @ SV74 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[933]) ).

thf(1018,plain,
    ! [SV201: $i,SV156: $i] :
      ( ( ( disjoint @ SV156 @ SV201 )
        = $true )
      | ( ( ~ ( ~ ( in @ ( sK18_C @ SV201 @ SV156 ) @ SV156 )
              | ~ ( in @ ( sK18_C @ SV201 @ SV156 ) @ SV201 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[934]) ).

thf(1019,plain,
    ! [SV202: $i,SV157: $i] :
      ( ( ( ! [SY456: $i] :
              ( ~ ( in @ SY456 @ SV157 )
              | ~ ( in @ SY456 @ SV202 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV157 @ SV202 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[935]) ).

thf(1020,plain,
    ! [SV126: $i,SV75: $i] :
      ( ( ( ~ ! [SY391: $i] :
                ( ~ ( element @ SY391 @ ( powerset @ SV75 ) )
                | ~ ( disjoint @ SV126 @ SY391 )
                | ( subset @ SV126 @ ( subset_complement @ SV75 @ SY391 ) ) ) )
        = $false )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[936]) ).

thf(1021,plain,
    ! [SV126: $i,SV75: $i] :
      ( ( ( ~ ! [SY392: $i] :
                ( ~ ( element @ SY392 @ ( powerset @ SV75 ) )
                | ~ ( subset @ SV126 @ ( subset_complement @ SV75 @ SY392 ) )
                | ( disjoint @ SV126 @ SY392 ) ) )
        = $false )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[936]) ).

thf(1022,plain,
    ! [SV203: $i,SV158: $i] :
      ( ( ( ( ( set_difference @ SV158 @ SV203 )
           != empty_set ) )
        = $true )
      | ( ( subset @ SV158 @ SV203 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[937]) ).

thf(1023,plain,
    ! [SV204: $i,SV159: $i] :
      ( ( ( ~ ( subset @ SV159 @ SV204 ) )
        = $true )
      | ( ( ( set_difference @ SV159 @ SV204 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[938]) ).

thf(1024,plain,
    ! [SV205: $i,SV160: $i] :
      ( ( ( ( ( set_intersection2 @ SV160 @ SV205 )
           != empty_set ) )
        = $true )
      | ( ( disjoint @ SV160 @ SV205 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[939]) ).

thf(1025,plain,
    ! [SV206: $i,SV161: $i] :
      ( ( ( ~ ( disjoint @ SV161 @ SV206 ) )
        = $true )
      | ( ( ( set_intersection2 @ SV161 @ SV206 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[940]) ).

thf(1026,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ~ ( ~ ( ! [SY457: $i] :
                      ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SY457 )
                      | ~ ( in @ SY457 @ SV162 ) )
                  | ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) )
              | ~ ( ~ ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ ( sK11_SY246 @ SV207 @ SV162 ) )
                      | ~ ( in @ ( sK11_SY246 @ SV207 @ SV162 ) @ SV162 ) )
                  | ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) ) ) )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[941]) ).

thf(1027,plain,
    ! [SV163: $i,SV208: $i] :
      ( ( ( ( SV208
           != ( union @ SV163 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY458: $i] :
                    ( ! [SY424: $i] :
                        ( ~ ( in @ SY458 @ SY424 )
                        | ~ ( in @ SY424 @ SV163 ) )
                    | ( in @ SY458 @ SV208 ) )
              | ~ ! [SY460: $i] :
                    ( ~ ( in @ SY460 @ SV208 )
                    | ~ ( ~ ( in @ SY460 @ ( sK9_D @ SY460 @ SV208 @ SV163 ) )
                        | ~ ( in @ ( sK9_D @ SY460 @ SV208 @ SV163 ) @ SV163 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[942]) ).

thf(1028,plain,
    ! [SV209: $i,SV164: $i] :
      ( ( ( ( ( set_difference @ SV164 @ SV209 )
           != empty_set ) )
        = $true )
      | ( ( subset @ SV164 @ SV209 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[943]) ).

thf(1029,plain,
    ! [SV210: $i,SV165: $i] :
      ( ( ( ~ ( subset @ SV165 @ SV210 ) )
        = $true )
      | ( ( ( set_difference @ SV165 @ SV210 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[944]) ).

thf(1030,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ~ ( ~ ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
                | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
                | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
            | ~ ~ ( ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
                      | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
                  | ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
                      | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) ) ) )
        | ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[945]) ).

thf(1031,plain,
    ! [SV212: $i,SV76: $i,SV231: $i] :
      ( ( ( SV231
         != ( set_intersection2 @ SV76 @ SV212 ) )
        | ~ ( ~ ! [SY479: $i] :
                  ( ~ ( in @ SY479 @ SV76 )
                  | ~ ( in @ SY479 @ SV212 )
                  | ( in @ SY479 @ SV231 ) )
            | ~ ~ ( ~ ! [SY480: $i] :
                        ( ~ ( in @ SY480 @ SV231 )
                        | ( in @ SY480 @ SV76 ) )
                  | ~ ! [SY481: $i] :
                        ( ~ ( in @ SY481 @ SV231 )
                        | ( in @ SY481 @ SV212 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[946]) ).

thf(1032,plain,
    ! [SV213: $i,SV166: $i] :
      ( ( ( ~ ( in @ SV166 @ SV213 ) )
        = $true )
      | ( ( subset @ ( singleton @ SV166 ) @ SV213 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[947]) ).

thf(1033,plain,
    ! [SV214: $i,SV167: $i] :
      ( ( ( ~ ( subset @ ( singleton @ SV167 ) @ SV214 ) )
        = $true )
      | ( ( in @ SV167 @ SV214 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[948]) ).

thf(1034,plain,
    ! [SV215: $i,SV168: $i] :
      ( ( ( ~ ( subset @ SV168 @ ( singleton @ SV215 ) ) )
        = $true )
      | ( ( ( SV168 = empty_set )
          | ( SV168
            = ( singleton @ SV215 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[949]) ).

thf(1035,plain,
    ( ( ! [SX0: $i] :
          ( ( SX0 != empty_set )
          | ! [SX1: $i] : ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[950]) ).

thf(1036,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX0
           != ( singleton @ SX1 ) )
          | ( subset @ SX0 @ ( singleton @ SX1 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[951]) ).

thf(1037,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                      | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                       != SV77 ) )
                  | ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                      | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                       != SV216 ) ) )
            | ~ ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                  = SV77 )
                | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                  = SV216 ) ) )
        | ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[952]) ).

thf(1038,plain,
    ! [SV217: $i,SV77: $i,SV233: $i] :
      ( ( ( SV233
         != ( unordered_pair @ SV77 @ SV217 ) )
        | ~ ( ~ ! [SY482: $i] :
                  ( ~ ( in @ SY482 @ SV233 )
                  | ( SY482 = SV77 )
                  | ( SY482 = SV217 ) )
            | ~ ~ ( ~ ! [SY483: $i] :
                        ( ( SY483 != SV77 )
                        | ( in @ SY483 @ SV233 ) )
                  | ~ ! [SY484: $i] :
                        ( ( SY484 != SV217 )
                        | ( in @ SY484 @ SV233 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[953]) ).

thf(1039,plain,
    ! [SV218: $i,SV169: $i] :
      ( ( ( ( ( set_difference @ SV169 @ ( singleton @ SV218 ) )
           != SV169 ) )
        = $true )
      | ( ( ~ ( in @ SV218 @ SV169 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[954]) ).

thf(1040,plain,
    ! [SV170: $i,SV219: $i] :
      ( ( ( in @ SV219 @ SV170 )
        = $true )
      | ( ( ( set_difference @ SV170 @ ( singleton @ SV219 ) )
          = SV170 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[955]) ).

thf(1041,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
                  | ~ ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) )
              | ~ ( ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
                  | ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) ) ) )
        = $true )
      | ( ( SV220
          = ( powerset @ SV171 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[956]) ).

thf(1042,plain,
    ! [SV172: $i,SV221: $i] :
      ( ( ( ( SV221
           != ( powerset @ SV172 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY471: $i] :
                    ( ~ ( in @ SY471 @ SV221 )
                    | ( subset @ SY471 @ SV172 ) )
              | ~ ! [SY472: $i] :
                    ( ~ ( subset @ SY472 @ SV172 )
                    | ( in @ SY472 @ SV221 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[957]) ).

thf(1043,plain,
    ! [SV222: $i,SV173: $i] :
      ( ( ( ( ( set_difference @ SV173 @ SV222 )
           != SV173 ) )
        = $true )
      | ( ( disjoint @ SV173 @ SV222 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[958]) ).

thf(1044,plain,
    ! [SV223: $i,SV174: $i] :
      ( ( ( ~ ( disjoint @ SV174 @ SV223 ) )
        = $true )
      | ( ( ( set_difference @ SV174 @ SV223 )
          = SV174 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[959]) ).

thf(1045,plain,
    ! [SV2: $i,SV78: $i,SV175: $i] :
      ( ( ( in @ SV175 @ SV78 )
        = $false )
      | ( ( in @ SV175 @ SV2 )
        = $true )
      | ( ( element @ SV78 @ ( powerset @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[960]) ).

thf(1046,plain,
    ! [SV127: $i,SV5: $i,SV224: $i] :
      ( ( ( ~ ( element @ SV224 @ SV5 ) )
        = $true )
      | ( ( ( in @ SV224 @ SV127 )
          | ( in @ SV224 @ ( subset_complement @ SV5 @ SV127 ) ) )
        = $true )
      | ( ( element @ SV127 @ ( powerset @ SV5 ) )
        = $false )
      | ( ( SV5 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[961]) ).

thf(1047,plain,
    ! [SV128: $i,SV6: $i,SV79: $i] :
      ( ( ( in @ SV79 @ ( subset_complement @ SV6 @ SV128 ) )
        = $false )
      | ( ( ~ ( in @ SV79 @ SV128 ) )
        = $true )
      | ( ( element @ SV128 @ ( powerset @ SV6 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[962]) ).

thf(1048,plain,
    ! [SV129: $i,SV87: $i,SV21: $i] :
      ( ( ( in @ SV21 @ SV87 )
        = $false )
      | ( ( element @ SV87 @ ( powerset @ SV129 ) )
        = $false )
      | ( ( element @ SV21 @ SV129 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[963]) ).

thf(1049,plain,
    ! [SV130: $i,SV88: $i,SV22: $i] :
      ( ( ( in @ SV22 @ SV88 )
        = $false )
      | ( ( element @ SV88 @ ( powerset @ SV130 ) )
        = $false )
      | ( ( ~ ( empty @ SV130 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[964]) ).

thf(1050,plain,
    ! [SV139: $i,SV131: $i,SV94: $i,SV29: $i] :
      ( ( ( subset @ SV29 @ SV94 )
        = $false )
      | ( ( ~ ( subset @ SV131 @ SV139 ) )
        = $true )
      | ( ( subset @ ( cartesian_product2 @ SV29 @ SV131 ) @ ( cartesian_product2 @ SV94 @ SV139 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[966]) ).

thf(1051,plain,
    ! [SV97: $i,SV132: $i,SV32: $i] :
      ( ( ( subset @ SV32 @ SV132 )
        = $false )
      | ( ( subset @ SV32 @ SV97 )
        = $false )
      | ( ( subset @ SV32 @ ( set_intersection2 @ SV97 @ SV132 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[967]) ).

thf(1052,plain,
    ! [SV33: $i,SV133: $i,SV98: $i] :
      ( ( ( subset @ SV98 @ SV133 )
        = $false )
      | ( ( subset @ SV33 @ SV98 )
        = $false )
      | ( ( subset @ SV33 @ SV133 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[968]) ).

thf(1053,plain,
    ! [SV134: $i,SV109: $i,SV44: $i] :
      ( ( ( subset @ SV44 @ SV109 )
        = $false )
      | ( ( disjoint @ SV109 @ SV134 )
        = $false )
      | ( ( disjoint @ SV44 @ SV134 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[969]) ).

thf(1054,plain,
    ! [SV48: $i,SV112: $i,SV135: $i] :
      ( ( ( subset @ SV135 @ SV112 )
        = $false )
      | ( ( subset @ SV48 @ SV112 )
        = $false )
      | ( ( subset @ ( set_union2 @ SV48 @ SV135 ) @ SV112 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[970]) ).

thf(1055,plain,
    ! [SV142: $i,SV234: $i] :
      ( ( ( ~ ( in @ SV234 @ SV142 ) )
        = $true )
      | ( ( SV142 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[972]) ).

thf(1056,plain,
    ! [SV179: $i,SV143: $i] :
      ( ( ( SV143 = SV179 )
        = $true )
      | ( ( ~ ( subset @ SV143 @ SV179 ) )
        = $true )
      | ( ( proper_subset @ SV143 @ SV179 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[973]) ).

thf(1057,plain,
    ! [SV235: $i] :
      ( ( ! [SY485: $i] :
            ( ~ ( proper_subset @ SV235 @ SY485 )
            | ( SV235 != SY485 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[974]) ).

thf(1058,plain,
    ! [SV236: $i] :
      ( ( ! [SY486: $i] :
            ( ~ ( proper_subset @ SV236 @ SY486 )
            | ( subset @ SV236 @ SY486 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[975]) ).

thf(1059,plain,
    ! [SV180: $i,SV144: $i] :
      ( ( ( subset @ SV144 @ ( singleton @ SV180 ) )
        = $false )
      | ( ( ( SV144 = empty_set )
          | ( SV144
            = ( singleton @ SV180 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[976]) ).

thf(1060,plain,
    ! [SV237: $i] :
      ( ( ( SV237 != empty_set )
        | ! [SY487: $i] : ( subset @ SV237 @ ( singleton @ SY487 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[977]) ).

thf(1061,plain,
    ! [SV238: $i] :
      ( ( ! [SY488: $i] :
            ( ( SV238
             != ( singleton @ SY488 ) )
            | ( subset @ SV238 @ ( singleton @ SY488 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[978]) ).

thf(1062,plain,
    ! [SV181: $i,SV145: $i] :
      ( ( ( element @ SV145 @ ( powerset @ SV181 ) )
        = $false )
      | ( ( subset @ SV145 @ SV181 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[979]) ).

thf(1063,plain,
    ! [SV182: $i,SV146: $i] :
      ( ( ( subset @ SV146 @ SV182 )
        = $false )
      | ( ( element @ SV146 @ ( powerset @ SV182 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[980]) ).

thf(1064,plain,
    ! [SV183: $i,SV147: $i] :
      ( ( ( ~ ( subset @ SV147 @ SV183 ) )
        = $true )
      | ( ( ~ ( subset @ SV183 @ SV147 ) )
        = $true )
      | ( ( SV147 = SV183 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[981]) ).

thf(1065,plain,
    ! [SV239: $i] :
      ( ( ! [SY489: $i] :
            ( ( SV239 != SY489 )
            | ( subset @ SV239 @ SY489 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[982]) ).

thf(1066,plain,
    ! [SV240: $i] :
      ( ( ! [SY490: $i] :
            ( ( SV240 != SY490 )
            | ( subset @ SY490 @ SV240 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[983]) ).

thf(1067,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ( ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 ) )
        = $true )
      | ( ( ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) )
        = $true )
      | ( ( SV64 = SV123 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[984]) ).

thf(1068,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
        = $true )
      | ( ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 )
        = $true )
      | ( ( SV64 = SV123 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[985]) ).

thf(1069,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                        | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 ) )
                    | ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                        | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) )
              | ~ ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                  | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 )
                  | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) ) )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[986]) ).

thf(1070,plain,
    ! [SV185: $i,SV65: $i,SV226: $i] :
      ( ( ( ( SV226
           != ( set_union2 @ SV65 @ SV185 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY473: $i] :
                    ( ~ ( in @ SY473 @ SV226 )
                    | ( in @ SY473 @ SV65 )
                    | ( in @ SY473 @ SV185 ) )
              | ~ ~ ( ~ ! [SY474: $i] :
                          ( ~ ( in @ SY474 @ SV65 )
                          | ( in @ SY474 @ SV226 ) )
                    | ~ ! [SY475: $i] :
                          ( ~ ( in @ SY475 @ SV185 )
                          | ( in @ SY475 @ SV226 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[987]) ).

thf(1071,plain,
    ! [SV186: $i,SV148: $i] :
      ( ( ( in @ SV148 @ SV186 )
        = $false )
      | ( ( subset @ ( singleton @ SV148 ) @ SV186 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[988]) ).

thf(1072,plain,
    ! [SV187: $i,SV149: $i] :
      ( ( ( subset @ ( singleton @ SV149 ) @ SV187 )
        = $false )
      | ( ( in @ SV149 @ SV187 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[989]) ).

thf(1073,plain,
    ! [SV188: $i,SV67: $i] :
      ( ( ( subset @ SV67 @ SV188 )
        = $false )
      | ( ( ! [SY444: $i] : ( subset @ ( cartesian_product2 @ SV67 @ SY444 ) @ ( cartesian_product2 @ SV188 @ SY444 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[990]) ).

thf(1074,plain,
    ! [SV189: $i,SV67: $i] :
      ( ( ( subset @ SV67 @ SV189 )
        = $false )
      | ( ( ! [SY445: $i] : ( subset @ ( cartesian_product2 @ SY445 @ SV67 ) @ ( cartesian_product2 @ SY445 @ SV189 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[991]) ).

thf(1075,plain,
    ! [SV150: $i,SV190: $i] :
      ( ( ( ~ ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV150 )
          | ~ ~ ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV190 ) )
        = $false )
      | ( ( subset @ SV150 @ SV190 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[992]) ).

thf(1076,plain,
    ! [SV191: $i,SV151: $i] :
      ( ( ( subset @ SV151 @ SV191 )
        = $false )
      | ( ( ! [SY446: $i] :
              ( ~ ( in @ SY446 @ SV151 )
              | ( in @ SY446 @ SV191 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[993]) ).

thf(1077,plain,
    ! [SV241: $i] :
      ( ( ( empty @ SV241 )
        | ! [SY491: $i] :
            ( ~ ( element @ SY491 @ SV241 )
            | ( in @ SY491 @ SV241 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[994]) ).

thf(1078,plain,
    ! [SV242: $i] :
      ( ( ( empty @ SV242 )
        | ! [SY492: $i] :
            ( ~ ( in @ SY492 @ SV242 )
            | ( element @ SY492 @ SV242 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[995]) ).

thf(1079,plain,
    ! [SV243: $i] :
      ( ( ~ ( empty @ SV243 )
        | ! [SY493: $i] :
            ( ~ ( element @ SY493 @ SV243 )
            | ( empty @ SY493 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[996]) ).

thf(1080,plain,
    ! [SV244: $i] :
      ( ( ~ ( empty @ SV244 )
        | ! [SY494: $i] :
            ( ~ ( empty @ SY494 )
            | ( element @ SY494 @ SV244 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[997]) ).

thf(1081,plain,
    ! [SV68: $i,SV192: $i] :
      ( ( ( ~ ( subset @ SV192 @ ( sK19_B @ SV68 ) ) )
        = $true )
      | ( ( are_equipotent @ SV192 @ ( sK19_B @ SV68 ) )
        = $true )
      | ( ( in @ SV192 @ ( sK19_B @ SV68 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[998]) ).

thf(1082,plain,
    ! [SV68: $i] :
      ( ( ! [SY328: $i] :
            ( ~ ( in @ SY328 @ ( sK19_B @ SV68 ) )
            | ( in @ ( powerset @ SY328 ) @ ( sK19_B @ SV68 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[999]) ).

thf(1083,plain,
    ! [SV68: $i] :
      ( ( ~ ( ~ ! [SY329: $i,SY330: $i] :
                  ( ~ ( in @ SY329 @ ( sK19_B @ SV68 ) )
                  | ~ ( subset @ SY330 @ SY329 )
                  | ( in @ SY330 @ ( sK19_B @ SV68 ) ) )
            | ~ ( in @ SV68 @ ( sK19_B @ SV68 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1000]) ).

thf(1084,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ( ~ ( ( ( sK16_C @ SV193 @ SV152 )
               != SV152 )
              | ~ ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) )
          | ~ ( ( ( sK16_C @ SV193 @ SV152 )
                = SV152 )
              | ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) ) )
        = $false )
      | ( ( SV193
          = ( singleton @ SV152 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1001]) ).

thf(1085,plain,
    ! [SV153: $i,SV194: $i] :
      ( ( ( SV194
          = ( singleton @ SV153 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY447: $i] :
                    ( ( SY447 != SV153 )
                    | ( in @ SY447 @ SV194 ) )
              | ~ ! [SY448: $i] :
                    ( ~ ( in @ SY448 @ SV194 )
                    | ( SY448 = SV153 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1002]) ).

thf(1086,plain,
    ! [SV124: $i,SV69: $i] :
      ( ( ( ! [SY387: $i] :
              ( ~ ( element @ SY387 @ ( powerset @ ( powerset @ SV69 ) ) )
              | ~ ( ~ ( element @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
                  | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                            | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) )
                        | ~ ( ( in @ ( sK23_D @ SY387 @ SV124 @ SV69 ) @ SY387 )
                            | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SY387 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
              | ( SY387
                = ( complements_of_subsets @ SV69 @ SV124 ) ) ) )
        = $true )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1003]) ).

thf(1087,plain,
    ! [SV124: $i,SV69: $i] :
      ( ( ( ! [SY388: $i] :
              ( ~ ( element @ SY388 @ ( powerset @ ( powerset @ SV69 ) ) )
              | ( SY388
               != ( complements_of_subsets @ SV69 @ SV124 ) )
              | ~ ( ~ ! [SY389: $i] :
                        ( ~ ( element @ SY389 @ ( powerset @ SV69 ) )
                        | ~ ( in @ SY389 @ SY388 )
                        | ( in @ ( subset_complement @ SV69 @ SY389 ) @ SV124 ) )
                  | ~ ! [SY390: $i] :
                        ( ~ ( element @ SY390 @ ( powerset @ SV69 ) )
                        | ~ ( in @ ( subset_complement @ SV69 @ SY390 ) @ SV124 )
                        | ( in @ SY390 @ SY388 ) ) ) ) )
        = $true )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1004]) ).

thf(1088,plain,
    ! [SV195: $i,SV227: $i,SV70: $i] :
      ( ( ( ~ ( in @ SV70 @ SV227 )
          | ~ ( in @ SV195 @ SV227 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV70 @ SV195 ) @ SV227 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1005]) ).

thf(1089,plain,
    ! [SV70: $i] :
      ( ( ! [SY338: $i,SY339: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV70 @ SY338 ) @ SY339 )
            | ( in @ SV70 @ SY339 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1006]) ).

thf(1090,plain,
    ! [SV70: $i] :
      ( ( ! [SY340: $i,SY341: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV70 @ SY340 ) @ SY341 )
            | ( in @ SY340 @ SY341 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1007]) ).

thf(1091,plain,
    ! [SV71: $i,SV196: $i] :
      ( ( ( ~ ( subset @ SV196 @ ( sK3_B @ SV71 ) ) )
        = $true )
      | ( ( are_equipotent @ SV196 @ ( sK3_B @ SV71 ) )
        = $true )
      | ( ( in @ SV196 @ ( sK3_B @ SV71 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1008]) ).

thf(1092,plain,
    ! [SV71: $i] :
      ( ( ! [SY343: $i] :
            ( ~ ( ~ ! [SY344: $i] :
                      ( ~ ( subset @ SY344 @ SY343 )
                      | ( in @ SY344 @ ( sK4_SY240 @ SY343 @ SV71 ) ) )
                | ~ ( in @ ( sK4_SY240 @ SY343 @ SV71 ) @ ( sK3_B @ SV71 ) ) )
            | ~ ( in @ SY343 @ ( sK3_B @ SV71 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1009]) ).

thf(1093,plain,
    ! [SV71: $i] :
      ( ( ~ ( ~ ! [SY345: $i,SY346: $i] :
                  ( ~ ( in @ SY345 @ ( sK3_B @ SV71 ) )
                  | ~ ( subset @ SY346 @ SY345 )
                  | ( in @ SY346 @ ( sK3_B @ SV71 ) ) )
            | ~ ( in @ SV71 @ ( sK3_B @ SV71 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1010]) ).

thf(1094,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
                  | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
                  | ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
              | ~ ~ ( ~ ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
                        | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
                    | ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
                        | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) ) ) ) )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1011]) ).

thf(1095,plain,
    ! [SV198: $i,SV72: $i,SV229: $i] :
      ( ( ( ( SV229
           != ( set_difference @ SV72 @ SV198 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY476: $i] :
                    ( ~ ( in @ SY476 @ SV72 )
                    | ( in @ SY476 @ SV198 )
                    | ( in @ SY476 @ SV229 ) )
              | ~ ~ ( ~ ! [SY477: $i] :
                          ( ~ ( in @ SY477 @ SV229 )
                          | ( in @ SY477 @ SV72 ) )
                    | ~ ! [SY478: $i] :
                          ( ~ ( in @ SY478 @ SV229 )
                          | ~ ( in @ SY478 @ SV198 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1012]) ).

thf(1096,plain,
    ! [SV200: $i,SV155: $i,SV245: $i] :
      ( ( ( ~ ( in @ SV245 @ ( set_intersection2 @ SV155 @ SV200 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV155 @ SV200 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1014]) ).

thf(1097,plain,
    ! [SV73: $i,SV125: $i] :
      ( ( ( in @ ( sK26_C @ SV125 @ SV73 ) @ SV125 )
        = $false )
      | ( ( element @ SV73 @ ( powerset @ SV125 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1016]) ).

thf(1098,plain,
    ! [SV156: $i,SV201: $i] :
      ( ( ( ~ ( in @ ( sK18_C @ SV201 @ SV156 ) @ SV156 )
          | ~ ( in @ ( sK18_C @ SV201 @ SV156 ) @ SV201 ) )
        = $false )
      | ( ( disjoint @ SV156 @ SV201 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1018]) ).

thf(1099,plain,
    ! [SV202: $i,SV157: $i,SV246: $i] :
      ( ( ( ~ ( in @ SV246 @ SV157 )
          | ~ ( in @ SV246 @ SV202 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV157 @ SV202 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1019]) ).

thf(1100,plain,
    ! [SV126: $i,SV75: $i] :
      ( ( ( ! [SY391: $i] :
              ( ~ ( element @ SY391 @ ( powerset @ SV75 ) )
              | ~ ( disjoint @ SV126 @ SY391 )
              | ( subset @ SV126 @ ( subset_complement @ SV75 @ SY391 ) ) ) )
        = $true )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1020]) ).

thf(1101,plain,
    ! [SV126: $i,SV75: $i] :
      ( ( ( ! [SY392: $i] :
              ( ~ ( element @ SY392 @ ( powerset @ SV75 ) )
              | ~ ( subset @ SV126 @ ( subset_complement @ SV75 @ SY392 ) )
              | ( disjoint @ SV126 @ SY392 ) ) )
        = $true )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1021]) ).

thf(1102,plain,
    ! [SV203: $i,SV158: $i] :
      ( ( ( ( set_difference @ SV158 @ SV203 )
          = empty_set )
        = $false )
      | ( ( subset @ SV158 @ SV203 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1022]) ).

thf(1103,plain,
    ! [SV204: $i,SV159: $i] :
      ( ( ( subset @ SV159 @ SV204 )
        = $false )
      | ( ( ( set_difference @ SV159 @ SV204 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1023]) ).

thf(1104,plain,
    ! [SV205: $i,SV160: $i] :
      ( ( ( ( set_intersection2 @ SV160 @ SV205 )
          = empty_set )
        = $false )
      | ( ( disjoint @ SV160 @ SV205 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1024]) ).

thf(1105,plain,
    ! [SV206: $i,SV161: $i] :
      ( ( ( disjoint @ SV161 @ SV206 )
        = $false )
      | ( ( ( set_intersection2 @ SV161 @ SV206 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1025]) ).

thf(1106,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ~ ( ! [SY457: $i] :
                  ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SY457 )
                  | ~ ( in @ SY457 @ SV162 ) )
              | ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) )
          | ~ ( ~ ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ ( sK11_SY246 @ SV207 @ SV162 ) )
                  | ~ ( in @ ( sK11_SY246 @ SV207 @ SV162 ) @ SV162 ) )
              | ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) ) )
        = $false )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1026]) ).

thf(1107,plain,
    ! [SV163: $i,SV208: $i] :
      ( ( ( SV208
          = ( union @ SV163 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY458: $i] :
                    ( ! [SY424: $i] :
                        ( ~ ( in @ SY458 @ SY424 )
                        | ~ ( in @ SY424 @ SV163 ) )
                    | ( in @ SY458 @ SV208 ) )
              | ~ ! [SY460: $i] :
                    ( ~ ( in @ SY460 @ SV208 )
                    | ~ ( ~ ( in @ SY460 @ ( sK9_D @ SY460 @ SV208 @ SV163 ) )
                        | ~ ( in @ ( sK9_D @ SY460 @ SV208 @ SV163 ) @ SV163 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1027]) ).

thf(1108,plain,
    ! [SV209: $i,SV164: $i] :
      ( ( ( ( set_difference @ SV164 @ SV209 )
          = empty_set )
        = $false )
      | ( ( subset @ SV164 @ SV209 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1028]) ).

thf(1109,plain,
    ! [SV210: $i,SV165: $i] :
      ( ( ( subset @ SV165 @ SV210 )
        = $false )
      | ( ( ( set_difference @ SV165 @ SV210 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1029]) ).

thf(1110,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
                  | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
                  | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
              | ~ ~ ( ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
                        | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
                    | ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
                        | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) ) ) ) )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1030]) ).

thf(1111,plain,
    ! [SV212: $i,SV76: $i,SV231: $i] :
      ( ( ( ( SV231
           != ( set_intersection2 @ SV76 @ SV212 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY479: $i] :
                    ( ~ ( in @ SY479 @ SV76 )
                    | ~ ( in @ SY479 @ SV212 )
                    | ( in @ SY479 @ SV231 ) )
              | ~ ~ ( ~ ! [SY480: $i] :
                          ( ~ ( in @ SY480 @ SV231 )
                          | ( in @ SY480 @ SV76 ) )
                    | ~ ! [SY481: $i] :
                          ( ~ ( in @ SY481 @ SV231 )
                          | ( in @ SY481 @ SV212 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1031]) ).

thf(1112,plain,
    ! [SV213: $i,SV166: $i] :
      ( ( ( in @ SV166 @ SV213 )
        = $false )
      | ( ( subset @ ( singleton @ SV166 ) @ SV213 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1032]) ).

thf(1113,plain,
    ! [SV214: $i,SV167: $i] :
      ( ( ( subset @ ( singleton @ SV167 ) @ SV214 )
        = $false )
      | ( ( in @ SV167 @ SV214 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1033]) ).

thf(1114,plain,
    ! [SV215: $i,SV168: $i] :
      ( ( ( subset @ SV168 @ ( singleton @ SV215 ) )
        = $false )
      | ( ( ( SV168 = empty_set )
          | ( SV168
            = ( singleton @ SV215 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1034]) ).

thf(1115,plain,
    ! [SV247: $i] :
      ( ( ( SV247 != empty_set )
        | ! [SY495: $i] : ( subset @ SV247 @ ( singleton @ SY495 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1035]) ).

thf(1116,plain,
    ! [SV248: $i] :
      ( ( ! [SY496: $i] :
            ( ( SV248
             != ( singleton @ SY496 ) )
            | ( subset @ SV248 @ ( singleton @ SY496 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1036]) ).

thf(1117,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                        | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                         != SV77 ) )
                    | ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                        | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                         != SV216 ) ) )
              | ~ ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                  | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                    = SV77 )
                  | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                    = SV216 ) ) ) )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1037]) ).

thf(1118,plain,
    ! [SV217: $i,SV77: $i,SV233: $i] :
      ( ( ( ( SV233
           != ( unordered_pair @ SV77 @ SV217 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY482: $i] :
                    ( ~ ( in @ SY482 @ SV233 )
                    | ( SY482 = SV77 )
                    | ( SY482 = SV217 ) )
              | ~ ~ ( ~ ! [SY483: $i] :
                          ( ( SY483 != SV77 )
                          | ( in @ SY483 @ SV233 ) )
                    | ~ ! [SY484: $i] :
                          ( ( SY484 != SV217 )
                          | ( in @ SY484 @ SV233 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1038]) ).

thf(1119,plain,
    ! [SV218: $i,SV169: $i] :
      ( ( ( ( set_difference @ SV169 @ ( singleton @ SV218 ) )
          = SV169 )
        = $false )
      | ( ( ~ ( in @ SV218 @ SV169 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1039]) ).

thf(1120,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
              | ~ ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) )
          | ~ ( ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
              | ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) ) )
        = $false )
      | ( ( SV220
          = ( powerset @ SV171 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1041]) ).

thf(1121,plain,
    ! [SV172: $i,SV221: $i] :
      ( ( ( SV221
          = ( powerset @ SV172 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY471: $i] :
                    ( ~ ( in @ SY471 @ SV221 )
                    | ( subset @ SY471 @ SV172 ) )
              | ~ ! [SY472: $i] :
                    ( ~ ( subset @ SY472 @ SV172 )
                    | ( in @ SY472 @ SV221 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1042]) ).

thf(1122,plain,
    ! [SV222: $i,SV173: $i] :
      ( ( ( ( set_difference @ SV173 @ SV222 )
          = SV173 )
        = $false )
      | ( ( disjoint @ SV173 @ SV222 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1043]) ).

thf(1123,plain,
    ! [SV223: $i,SV174: $i] :
      ( ( ( disjoint @ SV174 @ SV223 )
        = $false )
      | ( ( ( set_difference @ SV174 @ SV223 )
          = SV174 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1044]) ).

thf(1124,plain,
    ! [SV127: $i,SV5: $i,SV224: $i] :
      ( ( ( element @ SV224 @ SV5 )
        = $false )
      | ( ( ( in @ SV224 @ SV127 )
          | ( in @ SV224 @ ( subset_complement @ SV5 @ SV127 ) ) )
        = $true )
      | ( ( element @ SV127 @ ( powerset @ SV5 ) )
        = $false )
      | ( ( SV5 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1046]) ).

thf(1125,plain,
    ! [SV6: $i,SV128: $i,SV79: $i] :
      ( ( ( in @ SV79 @ SV128 )
        = $false )
      | ( ( in @ SV79 @ ( subset_complement @ SV6 @ SV128 ) )
        = $false )
      | ( ( element @ SV128 @ ( powerset @ SV6 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1047]) ).

thf(1126,plain,
    ! [SV22: $i,SV88: $i,SV130: $i] :
      ( ( ( empty @ SV130 )
        = $false )
      | ( ( element @ SV88 @ ( powerset @ SV130 ) )
        = $false )
      | ( ( in @ SV22 @ SV88 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1049]) ).

thf(1127,plain,
    ! [SV94: $i,SV29: $i,SV139: $i,SV131: $i] :
      ( ( ( subset @ SV131 @ SV139 )
        = $false )
      | ( ( subset @ SV29 @ SV94 )
        = $false )
      | ( ( subset @ ( cartesian_product2 @ SV29 @ SV131 ) @ ( cartesian_product2 @ SV94 @ SV139 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1050]) ).

thf(1128,plain,
    ! [SV142: $i,SV234: $i] :
      ( ( ( in @ SV234 @ SV142 )
        = $false )
      | ( ( SV142 = empty_set )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1055]) ).

thf(1129,plain,
    ! [SV179: $i,SV143: $i] :
      ( ( ( subset @ SV143 @ SV179 )
        = $false )
      | ( ( SV143 = SV179 )
        = $true )
      | ( ( proper_subset @ SV143 @ SV179 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1056]) ).

thf(1130,plain,
    ! [SV249: $i,SV235: $i] :
      ( ( ~ ( proper_subset @ SV235 @ SV249 )
        | ( SV235 != SV249 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1057]) ).

thf(1131,plain,
    ! [SV250: $i,SV236: $i] :
      ( ( ~ ( proper_subset @ SV236 @ SV250 )
        | ( subset @ SV236 @ SV250 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1058]) ).

thf(1132,plain,
    ! [SV180: $i,SV144: $i] :
      ( ( ( SV144 = empty_set )
        = $true )
      | ( ( SV144
          = ( singleton @ SV180 ) )
        = $true )
      | ( ( subset @ SV144 @ ( singleton @ SV180 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1059]) ).

thf(1133,plain,
    ! [SV237: $i] :
      ( ( ( ( SV237 != empty_set ) )
        = $true )
      | ( ( ! [SY487: $i] : ( subset @ SV237 @ ( singleton @ SY487 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1060]) ).

thf(1134,plain,
    ! [SV251: $i,SV238: $i] :
      ( ( ( SV238
         != ( singleton @ SV251 ) )
        | ( subset @ SV238 @ ( singleton @ SV251 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1061]) ).

thf(1135,plain,
    ! [SV183: $i,SV147: $i] :
      ( ( ( subset @ SV147 @ SV183 )
        = $false )
      | ( ( ~ ( subset @ SV183 @ SV147 ) )
        = $true )
      | ( ( SV147 = SV183 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1064]) ).

thf(1136,plain,
    ! [SV252: $i,SV239: $i] :
      ( ( ( SV239 != SV252 )
        | ( subset @ SV239 @ SV252 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1065]) ).

thf(1137,plain,
    ! [SV253: $i,SV240: $i] :
      ( ( ( SV240 != SV253 )
        | ( subset @ SV253 @ SV240 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1066]) ).

thf(1138,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
        = $false )
      | ( ( ~ ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 ) )
        = $true )
      | ( ( SV64 = SV123 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1067]) ).

thf(1139,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                    | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 ) )
                | ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                    | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) )
          | ~ ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
              | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 )
              | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) )
        = $false )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1069]) ).

thf(1140,plain,
    ! [SV185: $i,SV65: $i,SV226: $i] :
      ( ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY473: $i] :
                    ( ~ ( in @ SY473 @ SV226 )
                    | ( in @ SY473 @ SV65 )
                    | ( in @ SY473 @ SV185 ) )
              | ~ ~ ( ~ ! [SY474: $i] :
                          ( ~ ( in @ SY474 @ SV65 )
                          | ( in @ SY474 @ SV226 ) )
                    | ~ ! [SY475: $i] :
                          ( ~ ( in @ SY475 @ SV185 )
                          | ( in @ SY475 @ SV226 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1070]) ).

thf(1141,plain,
    ! [SV188: $i,SV254: $i,SV67: $i] :
      ( ( ( subset @ ( cartesian_product2 @ SV67 @ SV254 ) @ ( cartesian_product2 @ SV188 @ SV254 ) )
        = $true )
      | ( ( subset @ SV67 @ SV188 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1073]) ).

thf(1142,plain,
    ! [SV189: $i,SV67: $i,SV255: $i] :
      ( ( ( subset @ ( cartesian_product2 @ SV255 @ SV67 ) @ ( cartesian_product2 @ SV255 @ SV189 ) )
        = $true )
      | ( ( subset @ SV67 @ SV189 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1074]) ).

thf(1143,plain,
    ! [SV150: $i,SV190: $i] :
      ( ( ( ~ ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV150 ) )
        = $false )
      | ( ( subset @ SV150 @ SV190 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1075]) ).

thf(1144,plain,
    ! [SV150: $i,SV190: $i] :
      ( ( ( ~ ~ ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV190 ) )
        = $false )
      | ( ( subset @ SV150 @ SV190 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1075]) ).

thf(1145,plain,
    ! [SV191: $i,SV151: $i,SV256: $i] :
      ( ( ( ~ ( in @ SV256 @ SV151 )
          | ( in @ SV256 @ SV191 ) )
        = $true )
      | ( ( subset @ SV151 @ SV191 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1076]) ).

thf(1146,plain,
    ! [SV241: $i] :
      ( ( ( empty @ SV241 )
        = $true )
      | ( ( ! [SY491: $i] :
              ( ~ ( element @ SY491 @ SV241 )
              | ( in @ SY491 @ SV241 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1077]) ).

thf(1147,plain,
    ! [SV242: $i] :
      ( ( ( empty @ SV242 )
        = $true )
      | ( ( ! [SY492: $i] :
              ( ~ ( in @ SY492 @ SV242 )
              | ( element @ SY492 @ SV242 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1078]) ).

thf(1148,plain,
    ! [SV243: $i] :
      ( ( ( ~ ( empty @ SV243 ) )
        = $true )
      | ( ( ! [SY493: $i] :
              ( ~ ( element @ SY493 @ SV243 )
              | ( empty @ SY493 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1079]) ).

thf(1149,plain,
    ! [SV244: $i] :
      ( ( ( ~ ( empty @ SV244 ) )
        = $true )
      | ( ( ! [SY494: $i] :
              ( ~ ( empty @ SY494 )
              | ( element @ SY494 @ SV244 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1080]) ).

thf(1150,plain,
    ! [SV68: $i,SV192: $i] :
      ( ( ( subset @ SV192 @ ( sK19_B @ SV68 ) )
        = $false )
      | ( ( are_equipotent @ SV192 @ ( sK19_B @ SV68 ) )
        = $true )
      | ( ( in @ SV192 @ ( sK19_B @ SV68 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1081]) ).

thf(1151,plain,
    ! [SV68: $i,SV257: $i] :
      ( ( ~ ( in @ SV257 @ ( sK19_B @ SV68 ) )
        | ( in @ ( powerset @ SV257 ) @ ( sK19_B @ SV68 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1082]) ).

thf(1152,plain,
    ! [SV68: $i] :
      ( ( ~ ! [SY329: $i,SY330: $i] :
              ( ~ ( in @ SY329 @ ( sK19_B @ SV68 ) )
              | ~ ( subset @ SY330 @ SY329 )
              | ( in @ SY330 @ ( sK19_B @ SV68 ) ) )
        | ~ ( in @ SV68 @ ( sK19_B @ SV68 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1083]) ).

thf(1153,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ( ~ ( ( ( sK16_C @ SV193 @ SV152 )
               != SV152 )
              | ~ ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) ) )
        = $false )
      | ( ( SV193
          = ( singleton @ SV152 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1084]) ).

thf(1154,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ( ~ ( ( ( sK16_C @ SV193 @ SV152 )
                = SV152 )
              | ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) ) )
        = $false )
      | ( ( SV193
          = ( singleton @ SV152 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1084]) ).

thf(1155,plain,
    ! [SV194: $i,SV153: $i] :
      ( ( ( ~ ! [SY447: $i] :
                ( ( SY447 != SV153 )
                | ( in @ SY447 @ SV194 ) )
          | ~ ! [SY448: $i] :
                ( ~ ( in @ SY448 @ SV194 )
                | ( SY448 = SV153 ) ) )
        = $false )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1085]) ).

thf(1156,plain,
    ! [SV124: $i,SV69: $i,SV258: $i] :
      ( ( ( ~ ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
          | ~ ( ~ ( element @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
              | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                        | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
                    | ~ ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                        | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
          | ( SV258
            = ( complements_of_subsets @ SV69 @ SV124 ) ) )
        = $true )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1086]) ).

thf(1157,plain,
    ! [SV124: $i,SV69: $i,SV259: $i] :
      ( ( ( ~ ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
          | ( SV259
           != ( complements_of_subsets @ SV69 @ SV124 ) )
          | ~ ( ~ ! [SY497: $i] :
                    ( ~ ( element @ SY497 @ ( powerset @ SV69 ) )
                    | ~ ( in @ SY497 @ SV259 )
                    | ( in @ ( subset_complement @ SV69 @ SY497 ) @ SV124 ) )
              | ~ ! [SY498: $i] :
                    ( ~ ( element @ SY498 @ ( powerset @ SV69 ) )
                    | ~ ( in @ ( subset_complement @ SV69 @ SY498 ) @ SV124 )
                    | ( in @ SY498 @ SV259 ) ) ) )
        = $true )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1087]) ).

thf(1158,plain,
    ! [SV195: $i,SV227: $i,SV70: $i] :
      ( ( ( ~ ( in @ SV70 @ SV227 ) )
        = $true )
      | ( ( ~ ( in @ SV195 @ SV227 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV70 @ SV195 ) @ SV227 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1088]) ).

thf(1159,plain,
    ! [SV260: $i,SV70: $i] :
      ( ( ! [SY499: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV70 @ SV260 ) @ SY499 )
            | ( in @ SV70 @ SY499 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1089]) ).

thf(1160,plain,
    ! [SV261: $i,SV70: $i] :
      ( ( ! [SY500: $i] :
            ( ~ ( subset @ ( unordered_pair @ SV70 @ SV261 ) @ SY500 )
            | ( in @ SV261 @ SY500 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1090]) ).

thf(1161,plain,
    ! [SV71: $i,SV196: $i] :
      ( ( ( subset @ SV196 @ ( sK3_B @ SV71 ) )
        = $false )
      | ( ( are_equipotent @ SV196 @ ( sK3_B @ SV71 ) )
        = $true )
      | ( ( in @ SV196 @ ( sK3_B @ SV71 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1091]) ).

thf(1162,plain,
    ! [SV71: $i,SV262: $i] :
      ( ( ~ ( ~ ! [SY501: $i] :
                  ( ~ ( subset @ SY501 @ SV262 )
                  | ( in @ SY501 @ ( sK4_SY240 @ SV262 @ SV71 ) ) )
            | ~ ( in @ ( sK4_SY240 @ SV262 @ SV71 ) @ ( sK3_B @ SV71 ) ) )
        | ~ ( in @ SV262 @ ( sK3_B @ SV71 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1092]) ).

thf(1163,plain,
    ! [SV71: $i] :
      ( ( ~ ! [SY345: $i,SY346: $i] :
              ( ~ ( in @ SY345 @ ( sK3_B @ SV71 ) )
              | ~ ( subset @ SY346 @ SY345 )
              | ( in @ SY346 @ ( sK3_B @ SV71 ) ) )
        | ~ ( in @ SV71 @ ( sK3_B @ SV71 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[1093]) ).

thf(1164,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
              | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
              | ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
          | ~ ~ ( ~ ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
                    | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
                | ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
                    | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) ) ) )
        = $false )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1094]) ).

thf(1165,plain,
    ! [SV198: $i,SV72: $i,SV229: $i] :
      ( ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY476: $i] :
                    ( ~ ( in @ SY476 @ SV72 )
                    | ( in @ SY476 @ SV198 )
                    | ( in @ SY476 @ SV229 ) )
              | ~ ~ ( ~ ! [SY477: $i] :
                          ( ~ ( in @ SY477 @ SV229 )
                          | ( in @ SY477 @ SV72 ) )
                    | ~ ! [SY478: $i] :
                          ( ~ ( in @ SY478 @ SV229 )
                          | ~ ( in @ SY478 @ SV198 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1095]) ).

thf(1166,plain,
    ! [SV200: $i,SV155: $i,SV245: $i] :
      ( ( ( in @ SV245 @ ( set_intersection2 @ SV155 @ SV200 ) )
        = $false )
      | ( ( ~ ( disjoint @ SV155 @ SV200 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1096]) ).

thf(1167,plain,
    ! [SV156: $i,SV201: $i] :
      ( ( ( ~ ( in @ ( sK18_C @ SV201 @ SV156 ) @ SV156 ) )
        = $false )
      | ( ( disjoint @ SV156 @ SV201 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1098]) ).

thf(1168,plain,
    ! [SV156: $i,SV201: $i] :
      ( ( ( ~ ( in @ ( sK18_C @ SV201 @ SV156 ) @ SV201 ) )
        = $false )
      | ( ( disjoint @ SV156 @ SV201 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1098]) ).

thf(1169,plain,
    ! [SV202: $i,SV157: $i,SV246: $i] :
      ( ( ( ~ ( in @ SV246 @ SV157 ) )
        = $true )
      | ( ( ~ ( in @ SV246 @ SV202 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV157 @ SV202 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1099]) ).

thf(1170,plain,
    ! [SV126: $i,SV75: $i,SV263: $i] :
      ( ( ( ~ ( element @ SV263 @ ( powerset @ SV75 ) )
          | ~ ( disjoint @ SV126 @ SV263 )
          | ( subset @ SV126 @ ( subset_complement @ SV75 @ SV263 ) ) )
        = $true )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1100]) ).

thf(1171,plain,
    ! [SV126: $i,SV75: $i,SV264: $i] :
      ( ( ( ~ ( element @ SV264 @ ( powerset @ SV75 ) )
          | ~ ( subset @ SV126 @ ( subset_complement @ SV75 @ SV264 ) )
          | ( disjoint @ SV126 @ SV264 ) )
        = $true )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1101]) ).

thf(1172,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ~ ( ! [SY457: $i] :
                  ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SY457 )
                  | ~ ( in @ SY457 @ SV162 ) )
              | ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) ) )
        = $false )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1106]) ).

thf(1173,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ ( sK11_SY246 @ SV207 @ SV162 ) )
                  | ~ ( in @ ( sK11_SY246 @ SV207 @ SV162 ) @ SV162 ) )
              | ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) ) )
        = $false )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1106]) ).

thf(1174,plain,
    ! [SV208: $i,SV163: $i] :
      ( ( ( ~ ! [SY458: $i] :
                ( ! [SY424: $i] :
                    ( ~ ( in @ SY458 @ SY424 )
                    | ~ ( in @ SY424 @ SV163 ) )
                | ( in @ SY458 @ SV208 ) )
          | ~ ! [SY460: $i] :
                ( ~ ( in @ SY460 @ SV208 )
                | ~ ( ~ ( in @ SY460 @ ( sK9_D @ SY460 @ SV208 @ SV163 ) )
                    | ~ ( in @ ( sK9_D @ SY460 @ SV208 @ SV163 ) @ SV163 ) ) ) )
        = $false )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1107]) ).

thf(1175,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
              | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
              | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
          | ~ ~ ( ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
                    | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
                | ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
                    | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) ) ) )
        = $false )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1110]) ).

thf(1176,plain,
    ! [SV212: $i,SV76: $i,SV231: $i] :
      ( ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY479: $i] :
                    ( ~ ( in @ SY479 @ SV76 )
                    | ~ ( in @ SY479 @ SV212 )
                    | ( in @ SY479 @ SV231 ) )
              | ~ ~ ( ~ ! [SY480: $i] :
                          ( ~ ( in @ SY480 @ SV231 )
                          | ( in @ SY480 @ SV76 ) )
                    | ~ ! [SY481: $i] :
                          ( ~ ( in @ SY481 @ SV231 )
                          | ( in @ SY481 @ SV212 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1111]) ).

thf(1177,plain,
    ! [SV215: $i,SV168: $i] :
      ( ( ( SV168 = empty_set )
        = $true )
      | ( ( SV168
          = ( singleton @ SV215 ) )
        = $true )
      | ( ( subset @ SV168 @ ( singleton @ SV215 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1114]) ).

thf(1178,plain,
    ! [SV247: $i] :
      ( ( ( ( SV247 != empty_set ) )
        = $true )
      | ( ( ! [SY495: $i] : ( subset @ SV247 @ ( singleton @ SY495 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1115]) ).

thf(1179,plain,
    ! [SV265: $i,SV248: $i] :
      ( ( ( SV248
         != ( singleton @ SV265 ) )
        | ( subset @ SV248 @ ( singleton @ SV265 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1116]) ).

thf(1180,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                    | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                     != SV77 ) )
                | ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                    | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                     != SV216 ) ) )
          | ~ ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
              | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                = SV77 )
              | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                = SV216 ) ) )
        = $false )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1117]) ).

thf(1181,plain,
    ! [SV217: $i,SV77: $i,SV233: $i] :
      ( ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY482: $i] :
                    ( ~ ( in @ SY482 @ SV233 )
                    | ( SY482 = SV77 )
                    | ( SY482 = SV217 ) )
              | ~ ~ ( ~ ! [SY483: $i] :
                          ( ( SY483 != SV77 )
                          | ( in @ SY483 @ SV233 ) )
                    | ~ ! [SY484: $i] :
                          ( ( SY484 != SV217 )
                          | ( in @ SY484 @ SV233 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1118]) ).

thf(1182,plain,
    ! [SV169: $i,SV218: $i] :
      ( ( ( in @ SV218 @ SV169 )
        = $false )
      | ( ( ( set_difference @ SV169 @ ( singleton @ SV218 ) )
          = SV169 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1119]) ).

thf(1183,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
              | ~ ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) ) )
        = $false )
      | ( ( SV220
          = ( powerset @ SV171 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1120]) ).

thf(1184,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ( ~ ( ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
              | ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) ) )
        = $false )
      | ( ( SV220
          = ( powerset @ SV171 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1120]) ).

thf(1185,plain,
    ! [SV172: $i,SV221: $i] :
      ( ( ( ~ ! [SY471: $i] :
                ( ~ ( in @ SY471 @ SV221 )
                | ( subset @ SY471 @ SV172 ) )
          | ~ ! [SY472: $i] :
                ( ~ ( subset @ SY472 @ SV172 )
                | ( in @ SY472 @ SV221 ) ) )
        = $false )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1121]) ).

thf(1186,plain,
    ! [SV5: $i,SV127: $i,SV224: $i] :
      ( ( ( in @ SV224 @ SV127 )
        = $true )
      | ( ( in @ SV224 @ ( subset_complement @ SV5 @ SV127 ) )
        = $true )
      | ( ( element @ SV224 @ SV5 )
        = $false )
      | ( ( element @ SV127 @ ( powerset @ SV5 ) )
        = $false )
      | ( ( SV5 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1124]) ).

thf(1187,plain,
    ! [SV249: $i,SV235: $i] :
      ( ( ( ~ ( proper_subset @ SV235 @ SV249 ) )
        = $true )
      | ( ( ( SV235 != SV249 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1130]) ).

thf(1188,plain,
    ! [SV250: $i,SV236: $i] :
      ( ( ( ~ ( proper_subset @ SV236 @ SV250 ) )
        = $true )
      | ( ( subset @ SV236 @ SV250 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1131]) ).

thf(1189,plain,
    ! [SV237: $i] :
      ( ( ( SV237 = empty_set )
        = $false )
      | ( ( ! [SY487: $i] : ( subset @ SV237 @ ( singleton @ SY487 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1133]) ).

thf(1190,plain,
    ! [SV251: $i,SV238: $i] :
      ( ( ( ( SV238
           != ( singleton @ SV251 ) ) )
        = $true )
      | ( ( subset @ SV238 @ ( singleton @ SV251 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1134]) ).

thf(1191,plain,
    ! [SV147: $i,SV183: $i] :
      ( ( ( subset @ SV183 @ SV147 )
        = $false )
      | ( ( subset @ SV147 @ SV183 )
        = $false )
      | ( ( SV147 = SV183 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1135]) ).

thf(1192,plain,
    ! [SV252: $i,SV239: $i] :
      ( ( ( ( SV239 != SV252 ) )
        = $true )
      | ( ( subset @ SV239 @ SV252 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1136]) ).

thf(1193,plain,
    ! [SV253: $i,SV240: $i] :
      ( ( ( ( SV240 != SV253 ) )
        = $true )
      | ( ( subset @ SV253 @ SV240 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1137]) ).

thf(1194,plain,
    ! [SV64: $i,SV123: $i] :
      ( ( ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV123 )
        = $false )
      | ( ( in @ ( sK5_C @ SV123 @ SV64 ) @ SV64 )
        = $false )
      | ( ( SV64 = SV123 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1138]) ).

thf(1195,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                    | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 ) )
                | ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                    | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) ) )
        = $false )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1139]) ).

thf(1196,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
              | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 )
              | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) )
        = $false )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1139]) ).

thf(1197,plain,
    ! [SV185: $i,SV65: $i,SV226: $i] :
      ( ( ( ~ ! [SY473: $i] :
                ( ~ ( in @ SY473 @ SV226 )
                | ( in @ SY473 @ SV65 )
                | ( in @ SY473 @ SV185 ) )
          | ~ ~ ( ~ ! [SY474: $i] :
                      ( ~ ( in @ SY474 @ SV65 )
                      | ( in @ SY474 @ SV226 ) )
                | ~ ! [SY475: $i] :
                      ( ~ ( in @ SY475 @ SV185 )
                      | ( in @ SY475 @ SV226 ) ) ) )
        = $false )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1140]) ).

thf(1198,plain,
    ! [SV150: $i,SV190: $i] :
      ( ( ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV150 )
        = $true )
      | ( ( subset @ SV150 @ SV190 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1143]) ).

thf(1199,plain,
    ! [SV150: $i,SV190: $i] :
      ( ( ( ~ ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV190 ) )
        = $true )
      | ( ( subset @ SV150 @ SV190 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1144]) ).

thf(1200,plain,
    ! [SV191: $i,SV151: $i,SV256: $i] :
      ( ( ( ~ ( in @ SV256 @ SV151 ) )
        = $true )
      | ( ( in @ SV256 @ SV191 )
        = $true )
      | ( ( subset @ SV151 @ SV191 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1145]) ).

thf(1201,plain,
    ! [SV241: $i,SV266: $i] :
      ( ( ( ~ ( element @ SV266 @ SV241 )
          | ( in @ SV266 @ SV241 ) )
        = $true )
      | ( ( empty @ SV241 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1146]) ).

thf(1202,plain,
    ! [SV242: $i,SV267: $i] :
      ( ( ( ~ ( in @ SV267 @ SV242 )
          | ( element @ SV267 @ SV242 ) )
        = $true )
      | ( ( empty @ SV242 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1147]) ).

thf(1203,plain,
    ! [SV243: $i] :
      ( ( ( empty @ SV243 )
        = $false )
      | ( ( ! [SY493: $i] :
              ( ~ ( element @ SY493 @ SV243 )
              | ( empty @ SY493 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1148]) ).

thf(1204,plain,
    ! [SV244: $i] :
      ( ( ( empty @ SV244 )
        = $false )
      | ( ( ! [SY494: $i] :
              ( ~ ( empty @ SY494 )
              | ( element @ SY494 @ SV244 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1149]) ).

thf(1205,plain,
    ! [SV68: $i,SV257: $i] :
      ( ( ( ~ ( in @ SV257 @ ( sK19_B @ SV68 ) ) )
        = $true )
      | ( ( in @ ( powerset @ SV257 ) @ ( sK19_B @ SV68 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1151]) ).

thf(1206,plain,
    ! [SV68: $i] :
      ( ( ~ ! [SY329: $i,SY330: $i] :
              ( ~ ( in @ SY329 @ ( sK19_B @ SV68 ) )
              | ~ ( subset @ SY330 @ SY329 )
              | ( in @ SY330 @ ( sK19_B @ SV68 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1152]) ).

thf(1207,plain,
    ! [SV68: $i] :
      ( ( ~ ( in @ SV68 @ ( sK19_B @ SV68 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1152]) ).

thf(1208,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ( ( ( sK16_C @ SV193 @ SV152 )
           != SV152 )
          | ~ ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) )
        = $true )
      | ( ( SV193
          = ( singleton @ SV152 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1153]) ).

thf(1209,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ( ( ( sK16_C @ SV193 @ SV152 )
            = SV152 )
          | ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) )
        = $true )
      | ( ( SV193
          = ( singleton @ SV152 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1154]) ).

thf(1210,plain,
    ! [SV194: $i,SV153: $i] :
      ( ( ( ~ ! [SY447: $i] :
                ( ( SY447 != SV153 )
                | ( in @ SY447 @ SV194 ) ) )
        = $false )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1155]) ).

thf(1211,plain,
    ! [SV153: $i,SV194: $i] :
      ( ( ( ~ ! [SY448: $i] :
                ( ~ ( in @ SY448 @ SV194 )
                | ( SY448 = SV153 ) ) )
        = $false )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1155]) ).

thf(1212,plain,
    ! [SV124: $i,SV69: $i,SV258: $i] :
      ( ( ( ~ ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) ) )
        = $true )
      | ( ( ~ ( ~ ( element @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
              | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                        | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
                    | ~ ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                        | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
          | ( SV258
            = ( complements_of_subsets @ SV69 @ SV124 ) ) )
        = $true )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1156]) ).

thf(1213,plain,
    ! [SV124: $i,SV69: $i,SV259: $i] :
      ( ( ( ~ ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) ) )
        = $true )
      | ( ( ( SV259
           != ( complements_of_subsets @ SV69 @ SV124 ) )
          | ~ ( ~ ! [SY497: $i] :
                    ( ~ ( element @ SY497 @ ( powerset @ SV69 ) )
                    | ~ ( in @ SY497 @ SV259 )
                    | ( in @ ( subset_complement @ SV69 @ SY497 ) @ SV124 ) )
              | ~ ! [SY498: $i] :
                    ( ~ ( element @ SY498 @ ( powerset @ SV69 ) )
                    | ~ ( in @ ( subset_complement @ SV69 @ SY498 ) @ SV124 )
                    | ( in @ SY498 @ SV259 ) ) ) )
        = $true )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1157]) ).

thf(1214,plain,
    ! [SV195: $i,SV227: $i,SV70: $i] :
      ( ( ( in @ SV70 @ SV227 )
        = $false )
      | ( ( ~ ( in @ SV195 @ SV227 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV70 @ SV195 ) @ SV227 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1158]) ).

thf(1215,plain,
    ! [SV268: $i,SV260: $i,SV70: $i] :
      ( ( ~ ( subset @ ( unordered_pair @ SV70 @ SV260 ) @ SV268 )
        | ( in @ SV70 @ SV268 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1159]) ).

thf(1216,plain,
    ! [SV269: $i,SV261: $i,SV70: $i] :
      ( ( ~ ( subset @ ( unordered_pair @ SV70 @ SV261 ) @ SV269 )
        | ( in @ SV261 @ SV269 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1160]) ).

thf(1217,plain,
    ! [SV71: $i,SV262: $i] :
      ( ( ( ~ ( ~ ! [SY501: $i] :
                    ( ~ ( subset @ SY501 @ SV262 )
                    | ( in @ SY501 @ ( sK4_SY240 @ SV262 @ SV71 ) ) )
              | ~ ( in @ ( sK4_SY240 @ SV262 @ SV71 ) @ ( sK3_B @ SV71 ) ) ) )
        = $true )
      | ( ( ~ ( in @ SV262 @ ( sK3_B @ SV71 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1162]) ).

thf(1218,plain,
    ! [SV71: $i] :
      ( ( ~ ! [SY345: $i,SY346: $i] :
              ( ~ ( in @ SY345 @ ( sK3_B @ SV71 ) )
              | ~ ( subset @ SY346 @ SY345 )
              | ( in @ SY346 @ ( sK3_B @ SV71 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1163]) ).

thf(1219,plain,
    ! [SV71: $i] :
      ( ( ~ ( in @ SV71 @ ( sK3_B @ SV71 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[1163]) ).

thf(1220,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
              | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
              | ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) ) )
        = $false )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1164]) ).

thf(1221,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ~ ( ~ ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
                    | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
                | ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
                    | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) ) ) )
        = $false )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1164]) ).

thf(1222,plain,
    ! [SV229: $i,SV198: $i,SV72: $i] :
      ( ( ( ~ ! [SY476: $i] :
                ( ~ ( in @ SY476 @ SV72 )
                | ( in @ SY476 @ SV198 )
                | ( in @ SY476 @ SV229 ) )
          | ~ ~ ( ~ ! [SY477: $i] :
                      ( ~ ( in @ SY477 @ SV229 )
                      | ( in @ SY477 @ SV72 ) )
                | ~ ! [SY478: $i] :
                      ( ~ ( in @ SY478 @ SV229 )
                      | ~ ( in @ SY478 @ SV198 ) ) ) )
        = $false )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1165]) ).

thf(1223,plain,
    ! [SV245: $i,SV200: $i,SV155: $i] :
      ( ( ( disjoint @ SV155 @ SV200 )
        = $false )
      | ( ( in @ SV245 @ ( set_intersection2 @ SV155 @ SV200 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1166]) ).

thf(1224,plain,
    ! [SV156: $i,SV201: $i] :
      ( ( ( in @ ( sK18_C @ SV201 @ SV156 ) @ SV156 )
        = $true )
      | ( ( disjoint @ SV156 @ SV201 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1167]) ).

thf(1225,plain,
    ! [SV156: $i,SV201: $i] :
      ( ( ( in @ ( sK18_C @ SV201 @ SV156 ) @ SV201 )
        = $true )
      | ( ( disjoint @ SV156 @ SV201 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1168]) ).

thf(1226,plain,
    ! [SV202: $i,SV157: $i,SV246: $i] :
      ( ( ( in @ SV246 @ SV157 )
        = $false )
      | ( ( ~ ( in @ SV246 @ SV202 ) )
        = $true )
      | ( ( ~ ( disjoint @ SV157 @ SV202 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1169]) ).

thf(1227,plain,
    ! [SV126: $i,SV75: $i,SV263: $i] :
      ( ( ( ~ ( element @ SV263 @ ( powerset @ SV75 ) ) )
        = $true )
      | ( ( ~ ( disjoint @ SV126 @ SV263 )
          | ( subset @ SV126 @ ( subset_complement @ SV75 @ SV263 ) ) )
        = $true )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1170]) ).

thf(1228,plain,
    ! [SV126: $i,SV75: $i,SV264: $i] :
      ( ( ( ~ ( element @ SV264 @ ( powerset @ SV75 ) ) )
        = $true )
      | ( ( ~ ( subset @ SV126 @ ( subset_complement @ SV75 @ SV264 ) )
          | ( disjoint @ SV126 @ SV264 ) )
        = $true )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1171]) ).

thf(1229,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ! [SY457: $i] :
              ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SY457 )
              | ~ ( in @ SY457 @ SV162 ) )
          | ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1172]) ).

thf(1230,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ ( sK11_SY246 @ SV207 @ SV162 ) )
              | ~ ( in @ ( sK11_SY246 @ SV207 @ SV162 ) @ SV162 ) )
          | ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1173]) ).

thf(1231,plain,
    ! [SV208: $i,SV163: $i] :
      ( ( ( ~ ! [SY458: $i] :
                ( ! [SY424: $i] :
                    ( ~ ( in @ SY458 @ SY424 )
                    | ~ ( in @ SY424 @ SV163 ) )
                | ( in @ SY458 @ SV208 ) ) )
        = $false )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1174]) ).

thf(1232,plain,
    ! [SV163: $i,SV208: $i] :
      ( ( ( ~ ! [SY460: $i] :
                ( ~ ( in @ SY460 @ SV208 )
                | ~ ( ~ ( in @ SY460 @ ( sK9_D @ SY460 @ SV208 @ SV163 ) )
                    | ~ ( in @ ( sK9_D @ SY460 @ SV208 @ SV163 ) @ SV163 ) ) ) )
        = $false )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1174]) ).

thf(1233,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
              | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
              | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) ) )
        = $false )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1175]) ).

thf(1234,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ~ ( ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
                    | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
                | ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
                    | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) ) ) )
        = $false )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1175]) ).

thf(1235,plain,
    ! [SV231: $i,SV212: $i,SV76: $i] :
      ( ( ( ~ ! [SY479: $i] :
                ( ~ ( in @ SY479 @ SV76 )
                | ~ ( in @ SY479 @ SV212 )
                | ( in @ SY479 @ SV231 ) )
          | ~ ~ ( ~ ! [SY480: $i] :
                      ( ~ ( in @ SY480 @ SV231 )
                      | ( in @ SY480 @ SV76 ) )
                | ~ ! [SY481: $i] :
                      ( ~ ( in @ SY481 @ SV231 )
                      | ( in @ SY481 @ SV212 ) ) ) )
        = $false )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1176]) ).

thf(1236,plain,
    ! [SV247: $i] :
      ( ( ( SV247 = empty_set )
        = $false )
      | ( ( ! [SY495: $i] : ( subset @ SV247 @ ( singleton @ SY495 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1178]) ).

thf(1237,plain,
    ! [SV265: $i,SV248: $i] :
      ( ( ( ( SV248
           != ( singleton @ SV265 ) ) )
        = $true )
      | ( ( subset @ SV248 @ ( singleton @ SV265 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1179]) ).

thf(1238,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                    | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                     != SV77 ) )
                | ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                    | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                     != SV216 ) ) ) )
        = $false )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1180]) ).

thf(1239,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
              | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                = SV77 )
              | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                = SV216 ) ) )
        = $false )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1180]) ).

thf(1240,plain,
    ! [SV217: $i,SV77: $i,SV233: $i] :
      ( ( ( ~ ! [SY482: $i] :
                ( ~ ( in @ SY482 @ SV233 )
                | ( SY482 = SV77 )
                | ( SY482 = SV217 ) )
          | ~ ~ ( ~ ! [SY483: $i] :
                      ( ( SY483 != SV77 )
                      | ( in @ SY483 @ SV233 ) )
                | ~ ! [SY484: $i] :
                      ( ( SY484 != SV217 )
                      | ( in @ SY484 @ SV233 ) ) ) )
        = $false )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1181]) ).

thf(1241,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ( ~ ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
          | ~ ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) )
        = $true )
      | ( ( SV220
          = ( powerset @ SV171 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1183]) ).

thf(1242,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ( ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
          | ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) )
        = $true )
      | ( ( SV220
          = ( powerset @ SV171 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1184]) ).

thf(1243,plain,
    ! [SV172: $i,SV221: $i] :
      ( ( ( ~ ! [SY471: $i] :
                ( ~ ( in @ SY471 @ SV221 )
                | ( subset @ SY471 @ SV172 ) ) )
        = $false )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1185]) ).

thf(1244,plain,
    ! [SV221: $i,SV172: $i] :
      ( ( ( ~ ! [SY472: $i] :
                ( ~ ( subset @ SY472 @ SV172 )
                | ( in @ SY472 @ SV221 ) ) )
        = $false )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1185]) ).

thf(1245,plain,
    ! [SV249: $i,SV235: $i] :
      ( ( ( proper_subset @ SV235 @ SV249 )
        = $false )
      | ( ( ( SV235 != SV249 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1187]) ).

thf(1246,plain,
    ! [SV250: $i,SV236: $i] :
      ( ( ( proper_subset @ SV236 @ SV250 )
        = $false )
      | ( ( subset @ SV236 @ SV250 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1188]) ).

thf(1247,plain,
    ! [SV270: $i,SV237: $i] :
      ( ( ( subset @ SV237 @ ( singleton @ SV270 ) )
        = $true )
      | ( ( SV237 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1189]) ).

thf(1248,plain,
    ! [SV251: $i,SV238: $i] :
      ( ( ( SV238
          = ( singleton @ SV251 ) )
        = $false )
      | ( ( subset @ SV238 @ ( singleton @ SV251 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1190]) ).

thf(1249,plain,
    ! [SV252: $i,SV239: $i] :
      ( ( ( SV239 = SV252 )
        = $false )
      | ( ( subset @ SV239 @ SV252 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1192]) ).

thf(1250,plain,
    ! [SV253: $i,SV240: $i] :
      ( ( ( SV240 = SV253 )
        = $false )
      | ( ( subset @ SV253 @ SV240 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1193]) ).

thf(1251,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                  | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 ) )
              | ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
                  | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) ) )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1195]) ).

thf(1252,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
          | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 )
          | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1196]) ).

thf(1253,plain,
    ! [SV185: $i,SV65: $i,SV226: $i] :
      ( ( ( ~ ! [SY473: $i] :
                ( ~ ( in @ SY473 @ SV226 )
                | ( in @ SY473 @ SV65 )
                | ( in @ SY473 @ SV185 ) ) )
        = $false )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1197]) ).

thf(1254,plain,
    ! [SV185: $i,SV226: $i,SV65: $i] :
      ( ( ( ~ ~ ( ~ ! [SY474: $i] :
                      ( ~ ( in @ SY474 @ SV65 )
                      | ( in @ SY474 @ SV226 ) )
                | ~ ! [SY475: $i] :
                      ( ~ ( in @ SY475 @ SV185 )
                      | ( in @ SY475 @ SV226 ) ) ) )
        = $false )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1197]) ).

thf(1255,plain,
    ! [SV150: $i,SV190: $i] :
      ( ( ( in @ ( sK13_C @ SV190 @ SV150 ) @ SV190 )
        = $false )
      | ( ( subset @ SV150 @ SV190 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1199]) ).

thf(1256,plain,
    ! [SV191: $i,SV151: $i,SV256: $i] :
      ( ( ( in @ SV256 @ SV151 )
        = $false )
      | ( ( in @ SV256 @ SV191 )
        = $true )
      | ( ( subset @ SV151 @ SV191 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1200]) ).

thf(1257,plain,
    ! [SV241: $i,SV266: $i] :
      ( ( ( ~ ( element @ SV266 @ SV241 ) )
        = $true )
      | ( ( in @ SV266 @ SV241 )
        = $true )
      | ( ( empty @ SV241 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1201]) ).

thf(1258,plain,
    ! [SV242: $i,SV267: $i] :
      ( ( ( ~ ( in @ SV267 @ SV242 ) )
        = $true )
      | ( ( element @ SV267 @ SV242 )
        = $true )
      | ( ( empty @ SV242 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1202]) ).

thf(1259,plain,
    ! [SV243: $i,SV271: $i] :
      ( ( ( ~ ( element @ SV271 @ SV243 )
          | ( empty @ SV271 ) )
        = $true )
      | ( ( empty @ SV243 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1203]) ).

thf(1260,plain,
    ! [SV244: $i,SV272: $i] :
      ( ( ( ~ ( empty @ SV272 )
          | ( element @ SV272 @ SV244 ) )
        = $true )
      | ( ( empty @ SV244 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1204]) ).

thf(1261,plain,
    ! [SV68: $i,SV257: $i] :
      ( ( ( in @ SV257 @ ( sK19_B @ SV68 ) )
        = $false )
      | ( ( in @ ( powerset @ SV257 ) @ ( sK19_B @ SV68 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1205]) ).

thf(1262,plain,
    ! [SV68: $i] :
      ( ( ! [SY329: $i,SY330: $i] :
            ( ~ ( in @ SY329 @ ( sK19_B @ SV68 ) )
            | ~ ( subset @ SY330 @ SY329 )
            | ( in @ SY330 @ ( sK19_B @ SV68 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1206]) ).

thf(1263,plain,
    ! [SV68: $i] :
      ( ( in @ SV68 @ ( sK19_B @ SV68 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1207]) ).

thf(1264,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ( ( ( sK16_C @ SV193 @ SV152 )
           != SV152 ) )
        = $true )
      | ( ( ~ ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) )
        = $true )
      | ( ( SV193
          = ( singleton @ SV152 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1208]) ).

thf(1265,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ( ( sK16_C @ SV193 @ SV152 )
          = SV152 )
        = $true )
      | ( ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 )
        = $true )
      | ( ( SV193
          = ( singleton @ SV152 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1209]) ).

thf(1266,plain,
    ! [SV194: $i,SV153: $i] :
      ( ( ( ! [SY447: $i] :
              ( ( SY447 != SV153 )
              | ( in @ SY447 @ SV194 ) ) )
        = $true )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1210]) ).

thf(1267,plain,
    ! [SV153: $i,SV194: $i] :
      ( ( ( ! [SY448: $i] :
              ( ~ ( in @ SY448 @ SV194 )
              | ( SY448 = SV153 ) ) )
        = $true )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1211]) ).

thf(1268,plain,
    ! [SV124: $i,SV69: $i,SV258: $i] :
      ( ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( ~ ( ~ ( element @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
              | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                        | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
                    | ~ ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                        | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
          | ( SV258
            = ( complements_of_subsets @ SV69 @ SV124 ) ) )
        = $true )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1212]) ).

thf(1269,plain,
    ! [SV124: $i,SV69: $i,SV259: $i] :
      ( ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( ( SV259
           != ( complements_of_subsets @ SV69 @ SV124 ) )
          | ~ ( ~ ! [SY497: $i] :
                    ( ~ ( element @ SY497 @ ( powerset @ SV69 ) )
                    | ~ ( in @ SY497 @ SV259 )
                    | ( in @ ( subset_complement @ SV69 @ SY497 ) @ SV124 ) )
              | ~ ! [SY498: $i] :
                    ( ~ ( element @ SY498 @ ( powerset @ SV69 ) )
                    | ~ ( in @ ( subset_complement @ SV69 @ SY498 ) @ SV124 )
                    | ( in @ SY498 @ SV259 ) ) ) )
        = $true )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1213]) ).

thf(1270,plain,
    ! [SV70: $i,SV227: $i,SV195: $i] :
      ( ( ( in @ SV195 @ SV227 )
        = $false )
      | ( ( in @ SV70 @ SV227 )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV70 @ SV195 ) @ SV227 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1214]) ).

thf(1271,plain,
    ! [SV268: $i,SV260: $i,SV70: $i] :
      ( ( ( ~ ( subset @ ( unordered_pair @ SV70 @ SV260 ) @ SV268 ) )
        = $true )
      | ( ( in @ SV70 @ SV268 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1215]) ).

thf(1272,plain,
    ! [SV269: $i,SV261: $i,SV70: $i] :
      ( ( ( ~ ( subset @ ( unordered_pair @ SV70 @ SV261 ) @ SV269 ) )
        = $true )
      | ( ( in @ SV261 @ SV269 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1216]) ).

thf(1273,plain,
    ! [SV71: $i,SV262: $i] :
      ( ( ( ~ ! [SY501: $i] :
                ( ~ ( subset @ SY501 @ SV262 )
                | ( in @ SY501 @ ( sK4_SY240 @ SV262 @ SV71 ) ) )
          | ~ ( in @ ( sK4_SY240 @ SV262 @ SV71 ) @ ( sK3_B @ SV71 ) ) )
        = $false )
      | ( ( ~ ( in @ SV262 @ ( sK3_B @ SV71 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1217]) ).

thf(1274,plain,
    ! [SV71: $i] :
      ( ( ! [SY345: $i,SY346: $i] :
            ( ~ ( in @ SY345 @ ( sK3_B @ SV71 ) )
            | ~ ( subset @ SY346 @ SY345 )
            | ( in @ SY346 @ ( sK3_B @ SV71 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1218]) ).

thf(1275,plain,
    ! [SV71: $i] :
      ( ( in @ SV71 @ ( sK3_B @ SV71 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[1219]) ).

thf(1276,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
          | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
          | ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1220]) ).

thf(1277,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( ~ ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
                  | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
              | ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
                  | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) ) ) )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1221]) ).

thf(1278,plain,
    ! [SV229: $i,SV198: $i,SV72: $i] :
      ( ( ( ~ ! [SY476: $i] :
                ( ~ ( in @ SY476 @ SV72 )
                | ( in @ SY476 @ SV198 )
                | ( in @ SY476 @ SV229 ) ) )
        = $false )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1222]) ).

thf(1279,plain,
    ! [SV198: $i,SV72: $i,SV229: $i] :
      ( ( ( ~ ~ ( ~ ! [SY477: $i] :
                      ( ~ ( in @ SY477 @ SV229 )
                      | ( in @ SY477 @ SV72 ) )
                | ~ ! [SY478: $i] :
                      ( ~ ( in @ SY478 @ SV229 )
                      | ~ ( in @ SY478 @ SV198 ) ) ) )
        = $false )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1222]) ).

thf(1280,plain,
    ! [SV157: $i,SV202: $i,SV246: $i] :
      ( ( ( in @ SV246 @ SV202 )
        = $false )
      | ( ( in @ SV246 @ SV157 )
        = $false )
      | ( ( ~ ( disjoint @ SV157 @ SV202 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1226]) ).

thf(1281,plain,
    ! [SV126: $i,SV75: $i,SV263: $i] :
      ( ( ( element @ SV263 @ ( powerset @ SV75 ) )
        = $false )
      | ( ( ~ ( disjoint @ SV126 @ SV263 )
          | ( subset @ SV126 @ ( subset_complement @ SV75 @ SV263 ) ) )
        = $true )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1227]) ).

thf(1282,plain,
    ! [SV126: $i,SV75: $i,SV264: $i] :
      ( ( ( element @ SV264 @ ( powerset @ SV75 ) )
        = $false )
      | ( ( ~ ( subset @ SV126 @ ( subset_complement @ SV75 @ SV264 ) )
          | ( disjoint @ SV126 @ SV264 ) )
        = $true )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1228]) ).

thf(1283,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ! [SY457: $i] :
              ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SY457 )
              | ~ ( in @ SY457 @ SV162 ) ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1229]) ).

thf(1284,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ ( sK11_SY246 @ SV207 @ SV162 ) )
              | ~ ( in @ ( sK11_SY246 @ SV207 @ SV162 ) @ SV162 ) ) )
        = $true )
      | ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1230]) ).

thf(1285,plain,
    ! [SV208: $i,SV163: $i] :
      ( ( ( ! [SY458: $i] :
              ( ! [SY424: $i] :
                  ( ~ ( in @ SY458 @ SY424 )
                  | ~ ( in @ SY424 @ SV163 ) )
              | ( in @ SY458 @ SV208 ) ) )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1231]) ).

thf(1286,plain,
    ! [SV163: $i,SV208: $i] :
      ( ( ( ! [SY460: $i] :
              ( ~ ( in @ SY460 @ SV208 )
              | ~ ( ~ ( in @ SY460 @ ( sK9_D @ SY460 @ SV208 @ SV163 ) )
                  | ~ ( in @ ( sK9_D @ SY460 @ SV208 @ SV163 ) @ SV163 ) ) ) )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1232]) ).

thf(1287,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
          | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
          | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1233]) ).

thf(1288,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ( ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
                  | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
              | ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
                  | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) ) ) )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1234]) ).

thf(1289,plain,
    ! [SV231: $i,SV212: $i,SV76: $i] :
      ( ( ( ~ ! [SY479: $i] :
                ( ~ ( in @ SY479 @ SV76 )
                | ~ ( in @ SY479 @ SV212 )
                | ( in @ SY479 @ SV231 ) ) )
        = $false )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1235]) ).

thf(1290,plain,
    ! [SV212: $i,SV76: $i,SV231: $i] :
      ( ( ( ~ ~ ( ~ ! [SY480: $i] :
                      ( ~ ( in @ SY480 @ SV231 )
                      | ( in @ SY480 @ SV76 ) )
                | ~ ! [SY481: $i] :
                      ( ~ ( in @ SY481 @ SV231 )
                      | ( in @ SY481 @ SV212 ) ) ) )
        = $false )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1235]) ).

thf(1291,plain,
    ! [SV273: $i,SV247: $i] :
      ( ( ( subset @ SV247 @ ( singleton @ SV273 ) )
        = $true )
      | ( ( SV247 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1236]) ).

thf(1292,plain,
    ! [SV265: $i,SV248: $i] :
      ( ( ( SV248
          = ( singleton @ SV265 ) )
        = $false )
      | ( ( subset @ SV248 @ ( singleton @ SV265 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1237]) ).

thf(1293,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                  | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                   != SV77 ) )
              | ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
                  | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
                   != SV216 ) ) ) )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1238]) ).

thf(1294,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
          | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
            = SV77 )
          | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
            = SV216 ) )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1239]) ).

thf(1295,plain,
    ! [SV217: $i,SV77: $i,SV233: $i] :
      ( ( ( ~ ! [SY482: $i] :
                ( ~ ( in @ SY482 @ SV233 )
                | ( SY482 = SV77 )
                | ( SY482 = SV217 ) ) )
        = $false )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1240]) ).

thf(1296,plain,
    ! [SV217: $i,SV233: $i,SV77: $i] :
      ( ( ( ~ ~ ( ~ ! [SY483: $i] :
                      ( ( SY483 != SV77 )
                      | ( in @ SY483 @ SV233 ) )
                | ~ ! [SY484: $i] :
                      ( ( SY484 != SV217 )
                      | ( in @ SY484 @ SV233 ) ) ) )
        = $false )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1240]) ).

thf(1297,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ( ~ ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 ) )
        = $true )
      | ( ( ~ ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) )
        = $true )
      | ( ( SV220
          = ( powerset @ SV171 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1241]) ).

thf(1298,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
        = $true )
      | ( ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 )
        = $true )
      | ( ( SV220
          = ( powerset @ SV171 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1242]) ).

thf(1299,plain,
    ! [SV172: $i,SV221: $i] :
      ( ( ( ! [SY471: $i] :
              ( ~ ( in @ SY471 @ SV221 )
              | ( subset @ SY471 @ SV172 ) ) )
        = $true )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1243]) ).

thf(1300,plain,
    ! [SV221: $i,SV172: $i] :
      ( ( ( ! [SY472: $i] :
              ( ~ ( subset @ SY472 @ SV172 )
              | ( in @ SY472 @ SV221 ) ) )
        = $true )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1244]) ).

thf(1301,plain,
    ! [SV249: $i,SV235: $i] :
      ( ( ( SV235 = SV249 )
        = $false )
      | ( ( proper_subset @ SV235 @ SV249 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1245]) ).

thf(1302,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
              | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 ) )
          | ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
              | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) )
        = $false )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1251]) ).

thf(1303,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
        = $true )
      | ( ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 )
          | ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1252]) ).

thf(1304,plain,
    ! [SV185: $i,SV65: $i,SV226: $i] :
      ( ( ( ! [SY473: $i] :
              ( ~ ( in @ SY473 @ SV226 )
              | ( in @ SY473 @ SV65 )
              | ( in @ SY473 @ SV185 ) ) )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1253]) ).

thf(1305,plain,
    ! [SV185: $i,SV226: $i,SV65: $i] :
      ( ( ( ~ ( ~ ! [SY474: $i] :
                    ( ~ ( in @ SY474 @ SV65 )
                    | ( in @ SY474 @ SV226 ) )
              | ~ ! [SY475: $i] :
                    ( ~ ( in @ SY475 @ SV185 )
                    | ( in @ SY475 @ SV226 ) ) ) )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1254]) ).

thf(1306,plain,
    ! [SV241: $i,SV266: $i] :
      ( ( ( element @ SV266 @ SV241 )
        = $false )
      | ( ( in @ SV266 @ SV241 )
        = $true )
      | ( ( empty @ SV241 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1257]) ).

thf(1307,plain,
    ! [SV242: $i,SV267: $i] :
      ( ( ( in @ SV267 @ SV242 )
        = $false )
      | ( ( element @ SV267 @ SV242 )
        = $true )
      | ( ( empty @ SV242 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1258]) ).

thf(1308,plain,
    ! [SV243: $i,SV271: $i] :
      ( ( ( ~ ( element @ SV271 @ SV243 ) )
        = $true )
      | ( ( empty @ SV271 )
        = $true )
      | ( ( empty @ SV243 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1259]) ).

thf(1309,plain,
    ! [SV244: $i,SV272: $i] :
      ( ( ( ~ ( empty @ SV272 ) )
        = $true )
      | ( ( element @ SV272 @ SV244 )
        = $true )
      | ( ( empty @ SV244 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1260]) ).

thf(1310,plain,
    ! [SV68: $i,SV274: $i] :
      ( ( ! [SY502: $i] :
            ( ~ ( in @ SV274 @ ( sK19_B @ SV68 ) )
            | ~ ( subset @ SY502 @ SV274 )
            | ( in @ SY502 @ ( sK19_B @ SV68 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1262]) ).

thf(1311,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ( ( sK16_C @ SV193 @ SV152 )
          = SV152 )
        = $false )
      | ( ( ~ ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 ) )
        = $true )
      | ( ( SV193
          = ( singleton @ SV152 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1264]) ).

thf(1312,plain,
    ! [SV194: $i,SV153: $i,SV275: $i] :
      ( ( ( ( SV275 != SV153 )
          | ( in @ SV275 @ SV194 ) )
        = $true )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1266]) ).

thf(1313,plain,
    ! [SV153: $i,SV194: $i,SV276: $i] :
      ( ( ( ~ ( in @ SV276 @ SV194 )
          | ( SV276 = SV153 ) )
        = $true )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1267]) ).

thf(1314,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ~ ( ~ ( element @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
              | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                        | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
                    | ~ ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                        | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) ) ) ) )
        = $true )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1268]) ).

thf(1315,plain,
    ! [SV124: $i,SV69: $i,SV259: $i] :
      ( ( ( ( SV259
           != ( complements_of_subsets @ SV69 @ SV124 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY497: $i] :
                    ( ~ ( element @ SY497 @ ( powerset @ SV69 ) )
                    | ~ ( in @ SY497 @ SV259 )
                    | ( in @ ( subset_complement @ SV69 @ SY497 ) @ SV124 ) )
              | ~ ! [SY498: $i] :
                    ( ~ ( element @ SY498 @ ( powerset @ SV69 ) )
                    | ~ ( in @ ( subset_complement @ SV69 @ SY498 ) @ SV124 )
                    | ( in @ SY498 @ SV259 ) ) ) )
        = $true )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1269]) ).

thf(1316,plain,
    ! [SV268: $i,SV260: $i,SV70: $i] :
      ( ( ( subset @ ( unordered_pair @ SV70 @ SV260 ) @ SV268 )
        = $false )
      | ( ( in @ SV70 @ SV268 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1271]) ).

thf(1317,plain,
    ! [SV269: $i,SV261: $i,SV70: $i] :
      ( ( ( subset @ ( unordered_pair @ SV70 @ SV261 ) @ SV269 )
        = $false )
      | ( ( in @ SV261 @ SV269 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1272]) ).

thf(1318,plain,
    ! [SV71: $i,SV262: $i] :
      ( ( ( ~ ! [SY501: $i] :
                ( ~ ( subset @ SY501 @ SV262 )
                | ( in @ SY501 @ ( sK4_SY240 @ SV262 @ SV71 ) ) ) )
        = $false )
      | ( ( ~ ( in @ SV262 @ ( sK3_B @ SV71 ) ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1273]) ).

thf(1319,plain,
    ! [SV71: $i,SV262: $i] :
      ( ( ( ~ ( in @ ( sK4_SY240 @ SV262 @ SV71 ) @ ( sK3_B @ SV71 ) ) )
        = $false )
      | ( ( ~ ( in @ SV262 @ ( sK3_B @ SV71 ) ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1273]) ).

thf(1320,plain,
    ! [SV71: $i,SV277: $i] :
      ( ( ! [SY503: $i] :
            ( ~ ( in @ SV277 @ ( sK3_B @ SV71 ) )
            | ~ ( subset @ SY503 @ SV277 )
            | ( in @ SY503 @ ( sK3_B @ SV71 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1274]) ).

thf(1321,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
          | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 ) )
        = $true )
      | ( ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1276]) ).

thf(1322,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
              | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
          | ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
              | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) ) )
        = $false )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1277]) ).

thf(1323,plain,
    ! [SV229: $i,SV198: $i,SV72: $i] :
      ( ( ( ! [SY476: $i] :
              ( ~ ( in @ SY476 @ SV72 )
              | ( in @ SY476 @ SV198 )
              | ( in @ SY476 @ SV229 ) ) )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1278]) ).

thf(1324,plain,
    ! [SV198: $i,SV72: $i,SV229: $i] :
      ( ( ( ~ ( ~ ! [SY477: $i] :
                    ( ~ ( in @ SY477 @ SV229 )
                    | ( in @ SY477 @ SV72 ) )
              | ~ ! [SY478: $i] :
                    ( ~ ( in @ SY478 @ SV229 )
                    | ~ ( in @ SY478 @ SV198 ) ) ) )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1279]) ).

thf(1325,plain,
    ! [SV246: $i,SV202: $i,SV157: $i] :
      ( ( ( disjoint @ SV157 @ SV202 )
        = $false )
      | ( ( in @ SV246 @ SV157 )
        = $false )
      | ( ( in @ SV246 @ SV202 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1280]) ).

thf(1326,plain,
    ! [SV75: $i,SV263: $i,SV126: $i] :
      ( ( ( ~ ( disjoint @ SV126 @ SV263 ) )
        = $true )
      | ( ( subset @ SV126 @ ( subset_complement @ SV75 @ SV263 ) )
        = $true )
      | ( ( element @ SV263 @ ( powerset @ SV75 ) )
        = $false )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1281]) ).

thf(1327,plain,
    ! [SV264: $i,SV75: $i,SV126: $i] :
      ( ( ( ~ ( subset @ SV126 @ ( subset_complement @ SV75 @ SV264 ) ) )
        = $true )
      | ( ( disjoint @ SV126 @ SV264 )
        = $true )
      | ( ( element @ SV264 @ ( powerset @ SV75 ) )
        = $false )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1282]) ).

thf(1328,plain,
    ! [SV278: $i,SV162: $i,SV207: $i] :
      ( ( ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV278 )
          | ~ ( in @ SV278 @ SV162 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1283]) ).

thf(1329,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ ( sK11_SY246 @ SV207 @ SV162 ) )
          | ~ ( in @ ( sK11_SY246 @ SV207 @ SV162 ) @ SV162 ) )
        = $false )
      | ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1284]) ).

thf(1330,plain,
    ! [SV208: $i,SV163: $i,SV279: $i] :
      ( ( ( ! [SY504: $i] :
              ( ~ ( in @ SV279 @ SY504 )
              | ~ ( in @ SY504 @ SV163 ) )
          | ( in @ SV279 @ SV208 ) )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1285]) ).

thf(1331,plain,
    ! [SV163: $i,SV208: $i,SV280: $i] :
      ( ( ( ~ ( in @ SV280 @ SV208 )
          | ~ ( ~ ( in @ SV280 @ ( sK9_D @ SV280 @ SV208 @ SV163 ) )
              | ~ ( in @ ( sK9_D @ SV280 @ SV208 @ SV163 ) @ SV163 ) ) )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1286]) ).

thf(1332,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
          | ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 ) )
        = $true )
      | ( ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1287]) ).

thf(1333,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
              | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
          | ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
              | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) ) )
        = $false )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1288]) ).

thf(1334,plain,
    ! [SV231: $i,SV212: $i,SV76: $i] :
      ( ( ( ! [SY479: $i] :
              ( ~ ( in @ SY479 @ SV76 )
              | ~ ( in @ SY479 @ SV212 )
              | ( in @ SY479 @ SV231 ) ) )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1289]) ).

thf(1335,plain,
    ! [SV212: $i,SV76: $i,SV231: $i] :
      ( ( ( ~ ( ~ ! [SY480: $i] :
                    ( ~ ( in @ SY480 @ SV231 )
                    | ( in @ SY480 @ SV76 ) )
              | ~ ! [SY481: $i] :
                    ( ~ ( in @ SY481 @ SV231 )
                    | ( in @ SY481 @ SV212 ) ) ) )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1290]) ).

thf(1336,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
              | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
               != SV77 ) )
          | ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
              | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
               != SV216 ) ) )
        = $false )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1293]) ).

thf(1337,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
        = $true )
      | ( ( ( ( sK15_D @ SV232 @ SV216 @ SV77 )
            = SV77 )
          | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
            = SV216 ) )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1294]) ).

thf(1338,plain,
    ! [SV217: $i,SV77: $i,SV233: $i] :
      ( ( ( ! [SY482: $i] :
              ( ~ ( in @ SY482 @ SV233 )
              | ( SY482 = SV77 )
              | ( SY482 = SV217 ) ) )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1295]) ).

thf(1339,plain,
    ! [SV217: $i,SV233: $i,SV77: $i] :
      ( ( ( ~ ( ~ ! [SY483: $i] :
                    ( ( SY483 != SV77 )
                    | ( in @ SY483 @ SV233 ) )
              | ~ ! [SY484: $i] :
                    ( ( SY484 != SV217 )
                    | ( in @ SY484 @ SV233 ) ) ) )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1296]) ).

thf(1340,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
        = $false )
      | ( ( ~ ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 ) )
        = $true )
      | ( ( SV220
          = ( powerset @ SV171 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1297]) ).

thf(1341,plain,
    ! [SV172: $i,SV221: $i,SV281: $i] :
      ( ( ( ~ ( in @ SV281 @ SV221 )
          | ( subset @ SV281 @ SV172 ) )
        = $true )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1299]) ).

thf(1342,plain,
    ! [SV221: $i,SV172: $i,SV282: $i] :
      ( ( ( ~ ( subset @ SV282 @ SV172 )
          | ( in @ SV282 @ SV221 ) )
        = $true )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1300]) ).

thf(1343,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
              | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 ) ) )
        = $false )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1302]) ).

thf(1344,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
              | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) ) )
        = $false )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1302]) ).

thf(1345,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 )
        = $true )
      | ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 )
        = $true )
      | ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1303]) ).

thf(1346,plain,
    ! [SV185: $i,SV65: $i,SV226: $i,SV283: $i] :
      ( ( ( ~ ( in @ SV283 @ SV226 )
          | ( in @ SV283 @ SV65 )
          | ( in @ SV283 @ SV185 ) )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1304]) ).

thf(1347,plain,
    ! [SV185: $i,SV226: $i,SV65: $i] :
      ( ( ( ~ ! [SY474: $i] :
                ( ~ ( in @ SY474 @ SV65 )
                | ( in @ SY474 @ SV226 ) )
          | ~ ! [SY475: $i] :
                ( ~ ( in @ SY475 @ SV185 )
                | ( in @ SY475 @ SV226 ) ) )
        = $false )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1305]) ).

thf(1348,plain,
    ! [SV243: $i,SV271: $i] :
      ( ( ( element @ SV271 @ SV243 )
        = $false )
      | ( ( empty @ SV271 )
        = $true )
      | ( ( empty @ SV243 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1308]) ).

thf(1349,plain,
    ! [SV244: $i,SV272: $i] :
      ( ( ( empty @ SV272 )
        = $false )
      | ( ( element @ SV272 @ SV244 )
        = $true )
      | ( ( empty @ SV244 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1309]) ).

thf(1350,plain,
    ! [SV284: $i,SV68: $i,SV274: $i] :
      ( ( ~ ( in @ SV274 @ ( sK19_B @ SV68 ) )
        | ~ ( subset @ SV284 @ SV274 )
        | ( in @ SV284 @ ( sK19_B @ SV68 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1310]) ).

thf(1351,plain,
    ! [SV152: $i,SV193: $i] :
      ( ( ( in @ ( sK16_C @ SV193 @ SV152 ) @ SV193 )
        = $false )
      | ( ( ( sK16_C @ SV193 @ SV152 )
          = SV152 )
        = $false )
      | ( ( SV193
          = ( singleton @ SV152 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1311]) ).

thf(1352,plain,
    ! [SV194: $i,SV153: $i,SV275: $i] :
      ( ( ( ( SV275 != SV153 ) )
        = $true )
      | ( ( in @ SV275 @ SV194 )
        = $true )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1312]) ).

thf(1353,plain,
    ! [SV153: $i,SV194: $i,SV276: $i] :
      ( ( ( ~ ( in @ SV276 @ SV194 ) )
        = $true )
      | ( ( SV276 = SV153 )
        = $true )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1313]) ).

thf(1354,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ~ ( element @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
          | ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                    | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
                | ~ ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                    | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
        = $false )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1314]) ).

thf(1355,plain,
    ! [SV124: $i,SV69: $i,SV259: $i] :
      ( ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY497: $i] :
                    ( ~ ( element @ SY497 @ ( powerset @ SV69 ) )
                    | ~ ( in @ SY497 @ SV259 )
                    | ( in @ ( subset_complement @ SV69 @ SY497 ) @ SV124 ) )
              | ~ ! [SY498: $i] :
                    ( ~ ( element @ SY498 @ ( powerset @ SV69 ) )
                    | ~ ( in @ ( subset_complement @ SV69 @ SY498 ) @ SV124 )
                    | ( in @ SY498 @ SV259 ) ) ) )
        = $true )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1315]) ).

thf(1356,plain,
    ! [SV71: $i,SV262: $i] :
      ( ( ( ! [SY501: $i] :
              ( ~ ( subset @ SY501 @ SV262 )
              | ( in @ SY501 @ ( sK4_SY240 @ SV262 @ SV71 ) ) ) )
        = $true )
      | ( ( ~ ( in @ SV262 @ ( sK3_B @ SV71 ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1318]) ).

thf(1357,plain,
    ! [SV71: $i,SV262: $i] :
      ( ( ( in @ ( sK4_SY240 @ SV262 @ SV71 ) @ ( sK3_B @ SV71 ) )
        = $true )
      | ( ( ~ ( in @ SV262 @ ( sK3_B @ SV71 ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1319]) ).

thf(1358,plain,
    ! [SV285: $i,SV71: $i,SV277: $i] :
      ( ( ~ ( in @ SV277 @ ( sK3_B @ SV71 ) )
        | ~ ( subset @ SV285 @ SV277 )
        | ( in @ SV285 @ ( sK3_B @ SV71 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[1320]) ).

thf(1359,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 ) )
        = $true )
      | ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
        = $true )
      | ( ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1321]) ).

thf(1360,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
              | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) ) )
        = $false )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1322]) ).

thf(1361,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
              | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) ) )
        = $false )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1322]) ).

thf(1362,plain,
    ! [SV229: $i,SV198: $i,SV72: $i,SV286: $i] :
      ( ( ( ~ ( in @ SV286 @ SV72 )
          | ( in @ SV286 @ SV198 )
          | ( in @ SV286 @ SV229 ) )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1323]) ).

thf(1363,plain,
    ! [SV198: $i,SV72: $i,SV229: $i] :
      ( ( ( ~ ! [SY477: $i] :
                ( ~ ( in @ SY477 @ SV229 )
                | ( in @ SY477 @ SV72 ) )
          | ~ ! [SY478: $i] :
                ( ~ ( in @ SY478 @ SV229 )
                | ~ ( in @ SY478 @ SV198 ) ) )
        = $false )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1324]) ).

thf(1364,plain,
    ! [SV75: $i,SV263: $i,SV126: $i] :
      ( ( ( disjoint @ SV126 @ SV263 )
        = $false )
      | ( ( subset @ SV126 @ ( subset_complement @ SV75 @ SV263 ) )
        = $true )
      | ( ( element @ SV263 @ ( powerset @ SV75 ) )
        = $false )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1326]) ).

thf(1365,plain,
    ! [SV264: $i,SV75: $i,SV126: $i] :
      ( ( ( subset @ SV126 @ ( subset_complement @ SV75 @ SV264 ) )
        = $false )
      | ( ( disjoint @ SV126 @ SV264 )
        = $true )
      | ( ( element @ SV264 @ ( powerset @ SV75 ) )
        = $false )
      | ( ( element @ SV126 @ ( powerset @ SV75 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1327]) ).

thf(1366,plain,
    ! [SV278: $i,SV162: $i,SV207: $i] :
      ( ( ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV278 ) )
        = $true )
      | ( ( ~ ( in @ SV278 @ SV162 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1328]) ).

thf(1367,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ ( sK11_SY246 @ SV207 @ SV162 ) ) )
        = $false )
      | ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1329]) ).

thf(1368,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( ~ ( in @ ( sK11_SY246 @ SV207 @ SV162 ) @ SV162 ) )
        = $false )
      | ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1329]) ).

thf(1369,plain,
    ! [SV208: $i,SV163: $i,SV279: $i] :
      ( ( ( ! [SY504: $i] :
              ( ~ ( in @ SV279 @ SY504 )
              | ~ ( in @ SY504 @ SV163 ) ) )
        = $true )
      | ( ( in @ SV279 @ SV208 )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1330]) ).

thf(1370,plain,
    ! [SV163: $i,SV208: $i,SV280: $i] :
      ( ( ( ~ ( in @ SV280 @ SV208 ) )
        = $true )
      | ( ( ~ ( ~ ( in @ SV280 @ ( sK9_D @ SV280 @ SV208 @ SV163 ) )
              | ~ ( in @ ( sK9_D @ SV280 @ SV208 @ SV163 ) @ SV163 ) ) )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1331]) ).

thf(1371,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 ) )
        = $true )
      | ( ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 ) )
        = $true )
      | ( ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1332]) ).

thf(1372,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
              | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) ) )
        = $false )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1333]) ).

thf(1373,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ~ ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
              | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) ) )
        = $false )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1333]) ).

thf(1374,plain,
    ! [SV231: $i,SV212: $i,SV76: $i,SV287: $i] :
      ( ( ( ~ ( in @ SV287 @ SV76 )
          | ~ ( in @ SV287 @ SV212 )
          | ( in @ SV287 @ SV231 ) )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1334]) ).

thf(1375,plain,
    ! [SV212: $i,SV76: $i,SV231: $i] :
      ( ( ( ~ ! [SY480: $i] :
                ( ~ ( in @ SY480 @ SV231 )
                | ( in @ SY480 @ SV76 ) )
          | ~ ! [SY481: $i] :
                ( ~ ( in @ SY481 @ SV231 )
                | ( in @ SY481 @ SV212 ) ) )
        = $false )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1335]) ).

thf(1376,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
              | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
               != SV77 ) ) )
        = $false )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1336]) ).

thf(1377,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
              | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
               != SV216 ) ) )
        = $false )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[1336]) ).

thf(1378,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ( sK15_D @ SV232 @ SV216 @ SV77 )
          = SV77 )
        = $true )
      | ( ( ( sK15_D @ SV232 @ SV216 @ SV77 )
          = SV216 )
        = $true )
      | ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1337]) ).

thf(1379,plain,
    ! [SV217: $i,SV77: $i,SV233: $i,SV288: $i] :
      ( ( ( ~ ( in @ SV288 @ SV233 )
          | ( SV288 = SV77 )
          | ( SV288 = SV217 ) )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1338]) ).

thf(1380,plain,
    ! [SV217: $i,SV233: $i,SV77: $i] :
      ( ( ( ~ ! [SY483: $i] :
                ( ( SY483 != SV77 )
                | ( in @ SY483 @ SV233 ) )
          | ~ ! [SY484: $i] :
                ( ( SY484 != SV217 )
                | ( in @ SY484 @ SV233 ) ) )
        = $false )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1339]) ).

thf(1381,plain,
    ! [SV171: $i,SV220: $i] :
      ( ( ( subset @ ( sK24_C @ SV220 @ SV171 ) @ SV171 )
        = $false )
      | ( ( in @ ( sK24_C @ SV220 @ SV171 ) @ SV220 )
        = $false )
      | ( ( SV220
          = ( powerset @ SV171 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1340]) ).

thf(1382,plain,
    ! [SV172: $i,SV221: $i,SV281: $i] :
      ( ( ( ~ ( in @ SV281 @ SV221 ) )
        = $true )
      | ( ( subset @ SV281 @ SV172 )
        = $true )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1341]) ).

thf(1383,plain,
    ! [SV221: $i,SV172: $i,SV282: $i] :
      ( ( ( ~ ( subset @ SV282 @ SV172 ) )
        = $true )
      | ( ( in @ SV282 @ SV221 )
        = $true )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1342]) ).

thf(1384,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
          | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 ) )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1343]) ).

thf(1385,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
          | ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1344]) ).

thf(1386,plain,
    ! [SV185: $i,SV65: $i,SV226: $i,SV283: $i] :
      ( ( ( ~ ( in @ SV283 @ SV226 ) )
        = $true )
      | ( ( ( in @ SV283 @ SV65 )
          | ( in @ SV283 @ SV185 ) )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1346]) ).

thf(1387,plain,
    ! [SV185: $i,SV226: $i,SV65: $i] :
      ( ( ( ~ ! [SY474: $i] :
                ( ~ ( in @ SY474 @ SV65 )
                | ( in @ SY474 @ SV226 ) ) )
        = $false )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1347]) ).

thf(1388,plain,
    ! [SV65: $i,SV226: $i,SV185: $i] :
      ( ( ( ~ ! [SY475: $i] :
                ( ~ ( in @ SY475 @ SV185 )
                | ( in @ SY475 @ SV226 ) ) )
        = $false )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1347]) ).

thf(1389,plain,
    ! [SV284: $i,SV68: $i,SV274: $i] :
      ( ( ( ~ ( in @ SV274 @ ( sK19_B @ SV68 ) )
          | ~ ( subset @ SV284 @ SV274 ) )
        = $true )
      | ( ( in @ SV284 @ ( sK19_B @ SV68 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1350]) ).

thf(1390,plain,
    ! [SV194: $i,SV153: $i,SV275: $i] :
      ( ( ( SV275 = SV153 )
        = $false )
      | ( ( in @ SV275 @ SV194 )
        = $true )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1352]) ).

thf(1391,plain,
    ! [SV153: $i,SV194: $i,SV276: $i] :
      ( ( ( in @ SV276 @ SV194 )
        = $false )
      | ( ( SV276 = SV153 )
        = $true )
      | ( ( SV194
          = ( singleton @ SV153 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1353]) ).

thf(1392,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ~ ( element @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1354]) ).

thf(1393,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                    | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
                | ~ ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                    | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
        = $false )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1354]) ).

thf(1394,plain,
    ! [SV124: $i,SV259: $i,SV69: $i] :
      ( ( ( ~ ! [SY497: $i] :
                ( ~ ( element @ SY497 @ ( powerset @ SV69 ) )
                | ~ ( in @ SY497 @ SV259 )
                | ( in @ ( subset_complement @ SV69 @ SY497 ) @ SV124 ) )
          | ~ ! [SY498: $i] :
                ( ~ ( element @ SY498 @ ( powerset @ SV69 ) )
                | ~ ( in @ ( subset_complement @ SV69 @ SY498 ) @ SV124 )
                | ( in @ SY498 @ SV259 ) ) )
        = $false )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1355]) ).

thf(1395,plain,
    ! [SV71: $i,SV262: $i,SV289: $i] :
      ( ( ( ~ ( subset @ SV289 @ SV262 )
          | ( in @ SV289 @ ( sK4_SY240 @ SV262 @ SV71 ) ) )
        = $true )
      | ( ( ~ ( in @ SV262 @ ( sK3_B @ SV71 ) ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[1356]) ).

thf(1396,plain,
    ! [SV71: $i,SV262: $i] :
      ( ( ( in @ SV262 @ ( sK3_B @ SV71 ) )
        = $false )
      | ( ( in @ ( sK4_SY240 @ SV262 @ SV71 ) @ ( sK3_B @ SV71 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1357]) ).

thf(1397,plain,
    ! [SV285: $i,SV71: $i,SV277: $i] :
      ( ( ( ~ ( in @ SV277 @ ( sK3_B @ SV71 ) )
          | ~ ( subset @ SV285 @ SV277 ) )
        = $true )
      | ( ( in @ SV285 @ ( sK3_B @ SV71 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1358]) ).

thf(1398,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
        = $false )
      | ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
        = $true )
      | ( ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1359]) ).

thf(1399,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
          | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1360]) ).

thf(1400,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
          | ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 ) )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1361]) ).

thf(1401,plain,
    ! [SV229: $i,SV198: $i,SV72: $i,SV286: $i] :
      ( ( ( ~ ( in @ SV286 @ SV72 )
          | ( in @ SV286 @ SV198 ) )
        = $true )
      | ( ( in @ SV286 @ SV229 )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1362]) ).

thf(1402,plain,
    ! [SV198: $i,SV72: $i,SV229: $i] :
      ( ( ( ~ ! [SY477: $i] :
                ( ~ ( in @ SY477 @ SV229 )
                | ( in @ SY477 @ SV72 ) ) )
        = $false )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1363]) ).

thf(1403,plain,
    ! [SV72: $i,SV198: $i,SV229: $i] :
      ( ( ( ~ ! [SY478: $i] :
                ( ~ ( in @ SY478 @ SV229 )
                | ~ ( in @ SY478 @ SV198 ) ) )
        = $false )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1363]) ).

thf(1404,plain,
    ! [SV278: $i,SV162: $i,SV207: $i] :
      ( ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV278 )
        = $false )
      | ( ( ~ ( in @ SV278 @ SV162 ) )
        = $true )
      | ( ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1366]) ).

thf(1405,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ ( sK11_SY246 @ SV207 @ SV162 ) )
        = $true )
      | ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1367]) ).

thf(1406,plain,
    ! [SV162: $i,SV207: $i] :
      ( ( ( in @ ( sK11_SY246 @ SV207 @ SV162 ) @ SV162 )
        = $true )
      | ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1368]) ).

thf(1407,plain,
    ! [SV208: $i,SV163: $i,SV290: $i,SV279: $i] :
      ( ( ( ~ ( in @ SV279 @ SV290 )
          | ~ ( in @ SV290 @ SV163 ) )
        = $true )
      | ( ( in @ SV279 @ SV208 )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1369]) ).

thf(1408,plain,
    ! [SV163: $i,SV208: $i,SV280: $i] :
      ( ( ( in @ SV280 @ SV208 )
        = $false )
      | ( ( ~ ( ~ ( in @ SV280 @ ( sK9_D @ SV280 @ SV208 @ SV163 ) )
              | ~ ( in @ ( sK9_D @ SV280 @ SV208 @ SV163 ) @ SV163 ) ) )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1370]) ).

thf(1409,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
        = $false )
      | ( ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 ) )
        = $true )
      | ( ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1371]) ).

thf(1410,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
          | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1372]) ).

thf(1411,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
          | ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1373]) ).

thf(1412,plain,
    ! [SV231: $i,SV212: $i,SV76: $i,SV287: $i] :
      ( ( ( ~ ( in @ SV287 @ SV76 )
          | ~ ( in @ SV287 @ SV212 ) )
        = $true )
      | ( ( in @ SV287 @ SV231 )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1374]) ).

thf(1413,plain,
    ! [SV212: $i,SV76: $i,SV231: $i] :
      ( ( ( ~ ! [SY480: $i] :
                ( ~ ( in @ SY480 @ SV231 )
                | ( in @ SY480 @ SV76 ) ) )
        = $false )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1375]) ).

thf(1414,plain,
    ! [SV76: $i,SV212: $i,SV231: $i] :
      ( ( ( ~ ! [SY481: $i] :
                ( ~ ( in @ SY481 @ SV231 )
                | ( in @ SY481 @ SV212 ) ) )
        = $false )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1375]) ).

thf(1415,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
          | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
           != SV77 ) )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1376]) ).

thf(1416,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
          | ( ( sK15_D @ SV232 @ SV216 @ SV77 )
           != SV216 ) )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[1377]) ).

thf(1417,plain,
    ! [SV217: $i,SV77: $i,SV233: $i,SV288: $i] :
      ( ( ( ~ ( in @ SV288 @ SV233 ) )
        = $true )
      | ( ( ( SV288 = SV77 )
          | ( SV288 = SV217 ) )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1379]) ).

thf(1418,plain,
    ! [SV217: $i,SV233: $i,SV77: $i] :
      ( ( ( ~ ! [SY483: $i] :
                ( ( SY483 != SV77 )
                | ( in @ SY483 @ SV233 ) ) )
        = $false )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1380]) ).

thf(1419,plain,
    ! [SV77: $i,SV233: $i,SV217: $i] :
      ( ( ( ~ ! [SY484: $i] :
                ( ( SY484 != SV217 )
                | ( in @ SY484 @ SV233 ) ) )
        = $false )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1380]) ).

thf(1420,plain,
    ! [SV172: $i,SV221: $i,SV281: $i] :
      ( ( ( in @ SV281 @ SV221 )
        = $false )
      | ( ( subset @ SV281 @ SV172 )
        = $true )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1382]) ).

thf(1421,plain,
    ! [SV221: $i,SV172: $i,SV282: $i] :
      ( ( ( subset @ SV282 @ SV172 )
        = $false )
      | ( ( in @ SV282 @ SV221 )
        = $true )
      | ( ( SV221
          = ( powerset @ SV172 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1383]) ).

thf(1422,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 ) )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1384]) ).

thf(1423,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 ) )
        = $true )
      | ( ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1385]) ).

thf(1424,plain,
    ! [SV185: $i,SV65: $i,SV226: $i,SV283: $i] :
      ( ( ( in @ SV283 @ SV226 )
        = $false )
      | ( ( ( in @ SV283 @ SV65 )
          | ( in @ SV283 @ SV185 ) )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1386]) ).

thf(1425,plain,
    ! [SV185: $i,SV226: $i,SV65: $i] :
      ( ( ( ! [SY474: $i] :
              ( ~ ( in @ SY474 @ SV65 )
              | ( in @ SY474 @ SV226 ) ) )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1387]) ).

thf(1426,plain,
    ! [SV65: $i,SV226: $i,SV185: $i] :
      ( ( ( ! [SY475: $i] :
              ( ~ ( in @ SY475 @ SV185 )
              | ( in @ SY475 @ SV226 ) ) )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1388]) ).

thf(1427,plain,
    ! [SV284: $i,SV68: $i,SV274: $i] :
      ( ( ( ~ ( in @ SV274 @ ( sK19_B @ SV68 ) ) )
        = $true )
      | ( ( ~ ( subset @ SV284 @ SV274 ) )
        = $true )
      | ( ( in @ SV284 @ ( sK19_B @ SV68 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1389]) ).

thf(1428,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( element @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ ( powerset @ SV69 ) )
        = $true )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1392]) ).

thf(1429,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                  | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
              | ~ ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
                  | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) ) ) )
        = $true )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1393]) ).

thf(1430,plain,
    ! [SV124: $i,SV259: $i,SV69: $i] :
      ( ( ( ~ ! [SY497: $i] :
                ( ~ ( element @ SY497 @ ( powerset @ SV69 ) )
                | ~ ( in @ SY497 @ SV259 )
                | ( in @ ( subset_complement @ SV69 @ SY497 ) @ SV124 ) ) )
        = $false )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1394]) ).

thf(1431,plain,
    ! [SV259: $i,SV124: $i,SV69: $i] :
      ( ( ( ~ ! [SY498: $i] :
                ( ~ ( element @ SY498 @ ( powerset @ SV69 ) )
                | ~ ( in @ ( subset_complement @ SV69 @ SY498 ) @ SV124 )
                | ( in @ SY498 @ SV259 ) ) )
        = $false )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1394]) ).

thf(1432,plain,
    ! [SV71: $i,SV262: $i,SV289: $i] :
      ( ( ( ~ ( subset @ SV289 @ SV262 ) )
        = $true )
      | ( ( in @ SV289 @ ( sK4_SY240 @ SV262 @ SV71 ) )
        = $true )
      | ( ( ~ ( in @ SV262 @ ( sK3_B @ SV71 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1395]) ).

thf(1433,plain,
    ! [SV285: $i,SV71: $i,SV277: $i] :
      ( ( ( ~ ( in @ SV277 @ ( sK3_B @ SV71 ) ) )
        = $true )
      | ( ( ~ ( subset @ SV285 @ SV277 ) )
        = $true )
      | ( ( in @ SV285 @ ( sK3_B @ SV71 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1397]) ).

thf(1434,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 )
        = $false )
      | ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
        = $true )
      | ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
        = $false )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1398]) ).

thf(1435,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV72 )
        = $true )
      | ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1399]) ).

thf(1436,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( ~ ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 ) )
        = $true )
      | ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1400]) ).

thf(1437,plain,
    ! [SV229: $i,SV198: $i,SV72: $i,SV286: $i] :
      ( ( ( ~ ( in @ SV286 @ SV72 ) )
        = $true )
      | ( ( in @ SV286 @ SV198 )
        = $true )
      | ( ( in @ SV286 @ SV229 )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1401]) ).

thf(1438,plain,
    ! [SV198: $i,SV72: $i,SV229: $i] :
      ( ( ( ! [SY477: $i] :
              ( ~ ( in @ SY477 @ SV229 )
              | ( in @ SY477 @ SV72 ) ) )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1402]) ).

thf(1439,plain,
    ! [SV72: $i,SV198: $i,SV229: $i] :
      ( ( ( ! [SY478: $i] :
              ( ~ ( in @ SY478 @ SV229 )
              | ~ ( in @ SY478 @ SV198 ) ) )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1403]) ).

thf(1440,plain,
    ! [SV207: $i,SV162: $i,SV278: $i] :
      ( ( ( in @ SV278 @ SV162 )
        = $false )
      | ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV278 )
        = $false )
      | ( ( ~ ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 ) )
        = $true )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1404]) ).

thf(1441,plain,
    ! [SV208: $i,SV163: $i,SV290: $i,SV279: $i] :
      ( ( ( ~ ( in @ SV279 @ SV290 ) )
        = $true )
      | ( ( ~ ( in @ SV290 @ SV163 ) )
        = $true )
      | ( ( in @ SV279 @ SV208 )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1407]) ).

thf(1442,plain,
    ! [SV163: $i,SV208: $i,SV280: $i] :
      ( ( ( ~ ( in @ SV280 @ ( sK9_D @ SV280 @ SV208 @ SV163 ) )
          | ~ ( in @ ( sK9_D @ SV280 @ SV208 @ SV163 ) @ SV163 ) )
        = $false )
      | ( ( in @ SV280 @ SV208 )
        = $false )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1408]) ).

thf(1443,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
        = $false )
      | ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
        = $false )
      | ( ( ~ ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 ) )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1409]) ).

thf(1444,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
        = $true )
      | ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1410]) ).

thf(1445,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
        = $true )
      | ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 )
        = $true )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1411]) ).

thf(1446,plain,
    ! [SV231: $i,SV212: $i,SV76: $i,SV287: $i] :
      ( ( ( ~ ( in @ SV287 @ SV76 ) )
        = $true )
      | ( ( ~ ( in @ SV287 @ SV212 ) )
        = $true )
      | ( ( in @ SV287 @ SV231 )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1412]) ).

thf(1447,plain,
    ! [SV212: $i,SV76: $i,SV231: $i] :
      ( ( ( ! [SY480: $i] :
              ( ~ ( in @ SY480 @ SV231 )
              | ( in @ SY480 @ SV76 ) ) )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1413]) ).

thf(1448,plain,
    ! [SV76: $i,SV212: $i,SV231: $i] :
      ( ( ( ! [SY481: $i] :
              ( ~ ( in @ SY481 @ SV231 )
              | ( in @ SY481 @ SV212 ) ) )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1414]) ).

thf(1449,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 ) )
        = $true )
      | ( ( ( ( sK15_D @ SV232 @ SV216 @ SV77 )
           != SV77 ) )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1415]) ).

thf(1450,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ~ ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 ) )
        = $true )
      | ( ( ( ( sK15_D @ SV232 @ SV216 @ SV77 )
           != SV216 ) )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[1416]) ).

thf(1451,plain,
    ! [SV217: $i,SV77: $i,SV233: $i,SV288: $i] :
      ( ( ( in @ SV288 @ SV233 )
        = $false )
      | ( ( ( SV288 = SV77 )
          | ( SV288 = SV217 ) )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1417]) ).

thf(1452,plain,
    ! [SV217: $i,SV233: $i,SV77: $i] :
      ( ( ( ! [SY483: $i] :
              ( ( SY483 != SV77 )
              | ( in @ SY483 @ SV233 ) ) )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1418]) ).

thf(1453,plain,
    ! [SV77: $i,SV233: $i,SV217: $i] :
      ( ( ( ! [SY484: $i] :
              ( ( SY484 != SV217 )
              | ( in @ SY484 @ SV233 ) ) )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1419]) ).

thf(1454,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
        = $false )
      | ( ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 ) )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1422]) ).

thf(1455,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
        = $false )
      | ( ( ~ ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 ) )
        = $true )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1423]) ).

thf(1456,plain,
    ! [SV226: $i,SV185: $i,SV65: $i,SV283: $i] :
      ( ( ( in @ SV283 @ SV65 )
        = $true )
      | ( ( in @ SV283 @ SV185 )
        = $true )
      | ( ( in @ SV283 @ SV226 )
        = $false )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1424]) ).

thf(1457,plain,
    ! [SV185: $i,SV226: $i,SV65: $i,SV291: $i] :
      ( ( ( ~ ( in @ SV291 @ SV65 )
          | ( in @ SV291 @ SV226 ) )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1425]) ).

thf(1458,plain,
    ! [SV65: $i,SV226: $i,SV185: $i,SV292: $i] :
      ( ( ( ~ ( in @ SV292 @ SV185 )
          | ( in @ SV292 @ SV226 ) )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1426]) ).

thf(1459,plain,
    ! [SV284: $i,SV68: $i,SV274: $i] :
      ( ( ( in @ SV274 @ ( sK19_B @ SV68 ) )
        = $false )
      | ( ( ~ ( subset @ SV284 @ SV274 ) )
        = $true )
      | ( ( in @ SV284 @ ( sK19_B @ SV68 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1427]) ).

thf(1460,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
              | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
          | ~ ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
              | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) ) )
        = $false )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1429]) ).

thf(1461,plain,
    ! [SV124: $i,SV259: $i,SV69: $i] :
      ( ( ( ! [SY497: $i] :
              ( ~ ( element @ SY497 @ ( powerset @ SV69 ) )
              | ~ ( in @ SY497 @ SV259 )
              | ( in @ ( subset_complement @ SV69 @ SY497 ) @ SV124 ) ) )
        = $true )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1430]) ).

thf(1462,plain,
    ! [SV259: $i,SV124: $i,SV69: $i] :
      ( ( ( ! [SY498: $i] :
              ( ~ ( element @ SY498 @ ( powerset @ SV69 ) )
              | ~ ( in @ ( subset_complement @ SV69 @ SY498 ) @ SV124 )
              | ( in @ SY498 @ SV259 ) ) )
        = $true )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1431]) ).

thf(1463,plain,
    ! [SV71: $i,SV262: $i,SV289: $i] :
      ( ( ( subset @ SV289 @ SV262 )
        = $false )
      | ( ( in @ SV289 @ ( sK4_SY240 @ SV262 @ SV71 ) )
        = $true )
      | ( ( ~ ( in @ SV262 @ ( sK3_B @ SV71 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1432]) ).

thf(1464,plain,
    ! [SV285: $i,SV71: $i,SV277: $i] :
      ( ( ( in @ SV277 @ ( sK3_B @ SV71 ) )
        = $false )
      | ( ( ~ ( subset @ SV285 @ SV277 ) )
        = $true )
      | ( ( in @ SV285 @ ( sK3_B @ SV71 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1433]) ).

thf(1465,plain,
    ! [SV72: $i,SV197: $i,SV228: $i] :
      ( ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV197 )
        = $false )
      | ( ( in @ ( sK8_D @ SV228 @ SV197 @ SV72 ) @ SV228 )
        = $true )
      | ( ( SV228
          = ( set_difference @ SV72 @ SV197 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1436]) ).

thf(1466,plain,
    ! [SV229: $i,SV198: $i,SV72: $i,SV286: $i] :
      ( ( ( in @ SV286 @ SV72 )
        = $false )
      | ( ( in @ SV286 @ SV198 )
        = $true )
      | ( ( in @ SV286 @ SV229 )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1437]) ).

thf(1467,plain,
    ! [SV198: $i,SV72: $i,SV229: $i,SV293: $i] :
      ( ( ( ~ ( in @ SV293 @ SV229 )
          | ( in @ SV293 @ SV72 ) )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1438]) ).

thf(1468,plain,
    ! [SV72: $i,SV198: $i,SV229: $i,SV294: $i] :
      ( ( ( ~ ( in @ SV294 @ SV229 )
          | ~ ( in @ SV294 @ SV198 ) )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1439]) ).

thf(1469,plain,
    ! [SV278: $i,SV162: $i,SV207: $i] :
      ( ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV207 )
        = $false )
      | ( ( in @ ( sK10_C @ SV207 @ SV162 ) @ SV278 )
        = $false )
      | ( ( in @ SV278 @ SV162 )
        = $false )
      | ( ( SV207
          = ( union @ SV162 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1440]) ).

thf(1470,plain,
    ! [SV208: $i,SV163: $i,SV290: $i,SV279: $i] :
      ( ( ( in @ SV279 @ SV290 )
        = $false )
      | ( ( ~ ( in @ SV290 @ SV163 ) )
        = $true )
      | ( ( in @ SV279 @ SV208 )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1441]) ).

thf(1471,plain,
    ! [SV163: $i,SV208: $i,SV280: $i] :
      ( ( ( ~ ( in @ SV280 @ ( sK9_D @ SV280 @ SV208 @ SV163 ) ) )
        = $false )
      | ( ( in @ SV280 @ SV208 )
        = $false )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1442]) ).

thf(1472,plain,
    ! [SV163: $i,SV208: $i,SV280: $i] :
      ( ( ( ~ ( in @ ( sK9_D @ SV280 @ SV208 @ SV163 ) @ SV163 ) )
        = $false )
      | ( ( in @ SV280 @ SV208 )
        = $false )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1442]) ).

thf(1473,plain,
    ! [SV76: $i,SV211: $i,SV230: $i] :
      ( ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV230 )
        = $false )
      | ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV76 )
        = $false )
      | ( ( in @ ( sK12_D @ SV230 @ SV211 @ SV76 ) @ SV211 )
        = $false )
      | ( ( SV230
          = ( set_intersection2 @ SV76 @ SV211 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1443]) ).

thf(1474,plain,
    ! [SV231: $i,SV212: $i,SV76: $i,SV287: $i] :
      ( ( ( in @ SV287 @ SV76 )
        = $false )
      | ( ( ~ ( in @ SV287 @ SV212 ) )
        = $true )
      | ( ( in @ SV287 @ SV231 )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1446]) ).

thf(1475,plain,
    ! [SV212: $i,SV76: $i,SV231: $i,SV295: $i] :
      ( ( ( ~ ( in @ SV295 @ SV231 )
          | ( in @ SV295 @ SV76 ) )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1447]) ).

thf(1476,plain,
    ! [SV76: $i,SV212: $i,SV231: $i,SV296: $i] :
      ( ( ( ~ ( in @ SV296 @ SV231 )
          | ( in @ SV296 @ SV212 ) )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1448]) ).

thf(1477,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
        = $false )
      | ( ( ( ( sK15_D @ SV232 @ SV216 @ SV77 )
           != SV77 ) )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1449]) ).

thf(1478,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
        = $false )
      | ( ( ( ( sK15_D @ SV232 @ SV216 @ SV77 )
           != SV216 ) )
        = $true )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1450]) ).

thf(1479,plain,
    ! [SV233: $i,SV217: $i,SV77: $i,SV288: $i] :
      ( ( ( SV288 = SV77 )
        = $true )
      | ( ( SV288 = SV217 )
        = $true )
      | ( ( in @ SV288 @ SV233 )
        = $false )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1451]) ).

thf(1480,plain,
    ! [SV217: $i,SV233: $i,SV77: $i,SV297: $i] :
      ( ( ( ( SV297 != SV77 )
          | ( in @ SV297 @ SV233 ) )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1452]) ).

thf(1481,plain,
    ! [SV77: $i,SV233: $i,SV217: $i,SV298: $i] :
      ( ( ( ( SV298 != SV217 )
          | ( in @ SV298 @ SV233 ) )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1453]) ).

thf(1482,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV65 )
        = $false )
      | ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
        = $false )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1454]) ).

thf(1483,plain,
    ! [SV65: $i,SV184: $i,SV225: $i] :
      ( ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV184 )
        = $false )
      | ( ( in @ ( sK14_D @ SV225 @ SV184 @ SV65 ) @ SV225 )
        = $false )
      | ( ( SV225
          = ( set_union2 @ SV65 @ SV184 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1455]) ).

thf(1484,plain,
    ! [SV185: $i,SV226: $i,SV65: $i,SV291: $i] :
      ( ( ( ~ ( in @ SV291 @ SV65 ) )
        = $true )
      | ( ( in @ SV291 @ SV226 )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1457]) ).

thf(1485,plain,
    ! [SV65: $i,SV226: $i,SV185: $i,SV292: $i] :
      ( ( ( ~ ( in @ SV292 @ SV185 ) )
        = $true )
      | ( ( in @ SV292 @ SV226 )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1458]) ).

thf(1486,plain,
    ! [SV68: $i,SV274: $i,SV284: $i] :
      ( ( ( subset @ SV284 @ SV274 )
        = $false )
      | ( ( in @ SV274 @ ( sK19_B @ SV68 ) )
        = $false )
      | ( ( in @ SV284 @ ( sK19_B @ SV68 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1459]) ).

thf(1487,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
              | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) ) )
        = $false )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1460]) ).

thf(1488,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ~ ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
              | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) ) )
        = $false )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[1460]) ).

thf(1489,plain,
    ! [SV124: $i,SV259: $i,SV69: $i,SV299: $i] :
      ( ( ( ~ ( element @ SV299 @ ( powerset @ SV69 ) )
          | ~ ( in @ SV299 @ SV259 )
          | ( in @ ( subset_complement @ SV69 @ SV299 ) @ SV124 ) )
        = $true )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1461]) ).

thf(1490,plain,
    ! [SV259: $i,SV124: $i,SV69: $i,SV300: $i] :
      ( ( ( ~ ( element @ SV300 @ ( powerset @ SV69 ) )
          | ~ ( in @ ( subset_complement @ SV69 @ SV300 ) @ SV124 )
          | ( in @ SV300 @ SV259 ) )
        = $true )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[1462]) ).

thf(1491,plain,
    ! [SV289: $i,SV71: $i,SV262: $i] :
      ( ( ( in @ SV262 @ ( sK3_B @ SV71 ) )
        = $false )
      | ( ( in @ SV289 @ ( sK4_SY240 @ SV262 @ SV71 ) )
        = $true )
      | ( ( subset @ SV289 @ SV262 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1463]) ).

thf(1492,plain,
    ! [SV71: $i,SV277: $i,SV285: $i] :
      ( ( ( subset @ SV285 @ SV277 )
        = $false )
      | ( ( in @ SV277 @ ( sK3_B @ SV71 ) )
        = $false )
      | ( ( in @ SV285 @ ( sK3_B @ SV71 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1464]) ).

thf(1493,plain,
    ! [SV198: $i,SV72: $i,SV229: $i,SV293: $i] :
      ( ( ( ~ ( in @ SV293 @ SV229 ) )
        = $true )
      | ( ( in @ SV293 @ SV72 )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1467]) ).

thf(1494,plain,
    ! [SV72: $i,SV198: $i,SV229: $i,SV294: $i] :
      ( ( ( ~ ( in @ SV294 @ SV229 ) )
        = $true )
      | ( ( ~ ( in @ SV294 @ SV198 ) )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1468]) ).

thf(1495,plain,
    ! [SV208: $i,SV279: $i,SV163: $i,SV290: $i] :
      ( ( ( in @ SV290 @ SV163 )
        = $false )
      | ( ( in @ SV279 @ SV290 )
        = $false )
      | ( ( in @ SV279 @ SV208 )
        = $true )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1470]) ).

thf(1496,plain,
    ! [SV163: $i,SV208: $i,SV280: $i] :
      ( ( ( in @ SV280 @ ( sK9_D @ SV280 @ SV208 @ SV163 ) )
        = $true )
      | ( ( in @ SV280 @ SV208 )
        = $false )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1471]) ).

thf(1497,plain,
    ! [SV163: $i,SV208: $i,SV280: $i] :
      ( ( ( in @ ( sK9_D @ SV280 @ SV208 @ SV163 ) @ SV163 )
        = $true )
      | ( ( in @ SV280 @ SV208 )
        = $false )
      | ( ( SV208
          = ( union @ SV163 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1472]) ).

thf(1498,plain,
    ! [SV231: $i,SV76: $i,SV212: $i,SV287: $i] :
      ( ( ( in @ SV287 @ SV212 )
        = $false )
      | ( ( in @ SV287 @ SV76 )
        = $false )
      | ( ( in @ SV287 @ SV231 )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1474]) ).

thf(1499,plain,
    ! [SV212: $i,SV76: $i,SV231: $i,SV295: $i] :
      ( ( ( ~ ( in @ SV295 @ SV231 ) )
        = $true )
      | ( ( in @ SV295 @ SV76 )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1475]) ).

thf(1500,plain,
    ! [SV76: $i,SV212: $i,SV231: $i,SV296: $i] :
      ( ( ( ~ ( in @ SV296 @ SV231 ) )
        = $true )
      | ( ( in @ SV296 @ SV212 )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1476]) ).

thf(1501,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ( sK15_D @ SV232 @ SV216 @ SV77 )
          = SV77 )
        = $false )
      | ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
        = $false )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1477]) ).

thf(1502,plain,
    ! [SV77: $i,SV216: $i,SV232: $i] :
      ( ( ( ( sK15_D @ SV232 @ SV216 @ SV77 )
          = SV216 )
        = $false )
      | ( ( in @ ( sK15_D @ SV232 @ SV216 @ SV77 ) @ SV232 )
        = $false )
      | ( ( SV232
          = ( unordered_pair @ SV77 @ SV216 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[1478]) ).

thf(1503,plain,
    ! [SV217: $i,SV233: $i,SV77: $i,SV297: $i] :
      ( ( ( ( SV297 != SV77 ) )
        = $true )
      | ( ( in @ SV297 @ SV233 )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1480]) ).

thf(1504,plain,
    ! [SV77: $i,SV233: $i,SV217: $i,SV298: $i] :
      ( ( ( ( SV298 != SV217 ) )
        = $true )
      | ( ( in @ SV298 @ SV233 )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1481]) ).

thf(1505,plain,
    ! [SV185: $i,SV226: $i,SV65: $i,SV291: $i] :
      ( ( ( in @ SV291 @ SV65 )
        = $false )
      | ( ( in @ SV291 @ SV226 )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1484]) ).

thf(1506,plain,
    ! [SV65: $i,SV226: $i,SV185: $i,SV292: $i] :
      ( ( ( in @ SV292 @ SV185 )
        = $false )
      | ( ( in @ SV292 @ SV226 )
        = $true )
      | ( ( SV226
          = ( set_union2 @ SV65 @ SV185 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1485]) ).

thf(1507,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
          | ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
        = $true )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1487]) ).

thf(1508,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
          | ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
        = $true )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[1488]) ).

thf(1509,plain,
    ! [SV124: $i,SV259: $i,SV69: $i,SV299: $i] :
      ( ( ( ~ ( element @ SV299 @ ( powerset @ SV69 ) ) )
        = $true )
      | ( ( ~ ( in @ SV299 @ SV259 )
          | ( in @ ( subset_complement @ SV69 @ SV299 ) @ SV124 ) )
        = $true )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1489]) ).

thf(1510,plain,
    ! [SV259: $i,SV124: $i,SV69: $i,SV300: $i] :
      ( ( ( ~ ( element @ SV300 @ ( powerset @ SV69 ) ) )
        = $true )
      | ( ( ~ ( in @ ( subset_complement @ SV69 @ SV300 ) @ SV124 )
          | ( in @ SV300 @ SV259 ) )
        = $true )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1490]) ).

thf(1511,plain,
    ! [SV198: $i,SV72: $i,SV229: $i,SV293: $i] :
      ( ( ( in @ SV293 @ SV229 )
        = $false )
      | ( ( in @ SV293 @ SV72 )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1493]) ).

thf(1512,plain,
    ! [SV72: $i,SV198: $i,SV229: $i,SV294: $i] :
      ( ( ( in @ SV294 @ SV229 )
        = $false )
      | ( ( ~ ( in @ SV294 @ SV198 ) )
        = $true )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1494]) ).

thf(1513,plain,
    ! [SV212: $i,SV76: $i,SV231: $i,SV295: $i] :
      ( ( ( in @ SV295 @ SV231 )
        = $false )
      | ( ( in @ SV295 @ SV76 )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1499]) ).

thf(1514,plain,
    ! [SV76: $i,SV212: $i,SV231: $i,SV296: $i] :
      ( ( ( in @ SV296 @ SV231 )
        = $false )
      | ( ( in @ SV296 @ SV212 )
        = $true )
      | ( ( SV231
          = ( set_intersection2 @ SV76 @ SV212 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1500]) ).

thf(1515,plain,
    ! [SV217: $i,SV233: $i,SV77: $i,SV297: $i] :
      ( ( ( SV297 = SV77 )
        = $false )
      | ( ( in @ SV297 @ SV233 )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1503]) ).

thf(1516,plain,
    ! [SV77: $i,SV233: $i,SV217: $i,SV298: $i] :
      ( ( ( SV298 = SV217 )
        = $false )
      | ( ( in @ SV298 @ SV233 )
        = $true )
      | ( ( SV233
          = ( unordered_pair @ SV77 @ SV217 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1504]) ).

thf(1517,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( ~ ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 ) )
        = $true )
      | ( ( ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
        = $true )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1507]) ).

thf(1518,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
        = $true )
      | ( ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 )
        = $true )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1508]) ).

thf(1519,plain,
    ! [SV124: $i,SV259: $i,SV69: $i,SV299: $i] :
      ( ( ( element @ SV299 @ ( powerset @ SV69 ) )
        = $false )
      | ( ( ~ ( in @ SV299 @ SV259 )
          | ( in @ ( subset_complement @ SV69 @ SV299 ) @ SV124 ) )
        = $true )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1509]) ).

thf(1520,plain,
    ! [SV259: $i,SV124: $i,SV69: $i,SV300: $i] :
      ( ( ( element @ SV300 @ ( powerset @ SV69 ) )
        = $false )
      | ( ( ~ ( in @ ( subset_complement @ SV69 @ SV300 ) @ SV124 )
          | ( in @ SV300 @ SV259 ) )
        = $true )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1510]) ).

thf(1521,plain,
    ! [SV72: $i,SV229: $i,SV198: $i,SV294: $i] :
      ( ( ( in @ SV294 @ SV198 )
        = $false )
      | ( ( in @ SV294 @ SV229 )
        = $false )
      | ( ( SV229
          = ( set_difference @ SV72 @ SV198 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1512]) ).

thf(1522,plain,
    ! [SV69: $i,SV124: $i,SV258: $i] :
      ( ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
        = $false )
      | ( ( ~ ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 ) )
        = $true )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1517]) ).

thf(1523,plain,
    ! [SV124: $i,SV69: $i,SV259: $i,SV299: $i] :
      ( ( ( ~ ( in @ SV299 @ SV259 ) )
        = $true )
      | ( ( in @ ( subset_complement @ SV69 @ SV299 ) @ SV124 )
        = $true )
      | ( ( element @ SV299 @ ( powerset @ SV69 ) )
        = $false )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1519]) ).

thf(1524,plain,
    ! [SV259: $i,SV124: $i,SV300: $i,SV69: $i] :
      ( ( ( ~ ( in @ ( subset_complement @ SV69 @ SV300 ) @ SV124 ) )
        = $true )
      | ( ( in @ SV300 @ SV259 )
        = $true )
      | ( ( element @ SV300 @ ( powerset @ SV69 ) )
        = $false )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[1520]) ).

thf(1525,plain,
    ! [SV124: $i,SV258: $i,SV69: $i] :
      ( ( ( in @ ( subset_complement @ SV69 @ ( sK23_D @ SV258 @ SV124 @ SV69 ) ) @ SV124 )
        = $false )
      | ( ( in @ ( sK23_D @ SV258 @ SV124 @ SV69 ) @ SV258 )
        = $false )
      | ( ( SV258
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $true )
      | ( ( element @ SV258 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1522]) ).

thf(1526,plain,
    ! [SV124: $i,SV69: $i,SV259: $i,SV299: $i] :
      ( ( ( in @ SV299 @ SV259 )
        = $false )
      | ( ( in @ ( subset_complement @ SV69 @ SV299 ) @ SV124 )
        = $true )
      | ( ( element @ SV299 @ ( powerset @ SV69 ) )
        = $false )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1523]) ).

thf(1527,plain,
    ! [SV259: $i,SV124: $i,SV300: $i,SV69: $i] :
      ( ( ( in @ ( subset_complement @ SV69 @ SV300 ) @ SV124 )
        = $false )
      | ( ( in @ SV300 @ SV259 )
        = $true )
      | ( ( element @ SV300 @ ( powerset @ SV69 ) )
        = $false )
      | ( ( SV259
          = ( complements_of_subsets @ SV69 @ SV124 ) )
        = $false )
      | ( ( element @ SV259 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false )
      | ( ( element @ SV124 @ ( powerset @ ( powerset @ SV69 ) ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[1524]) ).

thf(1528,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[319,1527,1526,1525,1521,1518,1516,1515,1514,1513,1511,1506,1505,1502,1501,1498,1497,1496,1495,1492,1491,1486,1483,1482,1479,1473,1469,1466,1465,1456,1445,1444,1435,1434,1428,1421,1420,1406,1405,1396,1391,1390,1381,1378,1365,1364,1351,1349,1348,1345,1325,1317,1316,1307,1306,1301,1298,1292,1291,1275,1270,1265,1263,1261,1256,1255,1250,1249,1248,1247,1246,1225,1224,1223,1198,1194,1191,1186,1182,1177,1161,1150,1142,1141,1132,1129,1128,1127,1126,1125,1123,1122,1113,1112,1109,1108,1105,1104,1103,1102,1097,1072,1071,1068,1063,1062,1054,1053,1052,1051,1048,1045,1040,1017,1015,1013,971,965,932,890,888,887,886,885,882,881,880,875,872,862,818,817,801,800,799,796,793,790,789,787,783,781,778,774,773,772,771,770,769,759,695,675,672,660,596,595,589,585,582,581,580,574,559,551,512,511,510,509,496,471,470,468,466,462,458,454,415,407,337]) ).

thf(1529,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[1528]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.13  % Problem  : SEU174+2 : TPTP v8.1.0. Released v3.3.0.
% 0.07/0.14  % Command  : leo --timeout %d --proofoutput 1 --foatp e --atp e=./eprover %s
% 0.13/0.35  % Computer : n006.cluster.edu
% 0.13/0.35  % Model    : x86_64 x86_64
% 0.13/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.35  % Memory   : 8042.1875MB
% 0.13/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.35  % CPULimit : 300
% 0.13/0.35  % WCLimit  : 600
% 0.13/0.35  % DateTime : Mon Jun 20 00:48:25 EDT 2022
% 0.13/0.35  % CPUTime  : 
% 0.13/0.39  ...
% 0.20/0.43  
% 0.20/0.43   No.of.Axioms: 121
% 0.20/0.43  
% 0.20/0.43   Length.of.Defs: 0
% 0.20/0.43  
% 0.20/0.43   Contains.Choice.Funs: false
% 0.20/0.47  .......
% 0.20/0.50  (rf:2,axioms:101,ps:3,u:5,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:123,loop_count:0,foatp_calls:0,translation:fof_full)........................................................................................................
% 17.17/17.35  
% 17.17/17.35  ********************************
% 17.17/17.35  *   All subproblems solved!    *
% 17.17/17.35  ********************************
% 17.17/17.35  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:2,axioms:102,ps:3,u:5,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:1528,loop_count:0,foatp_calls:1,translation:fof_full)
% 17.99/18.18  
% 17.99/18.18  %**** Beginning of derivation protocol ****
% 17.99/18.18  % SZS output start CNFRefutation
% See solution above
% 17.99/18.18  
% 17.99/18.18  %**** End of derivation protocol ****
% 17.99/18.18  %**** no. of clauses in derivation: 1509 ****
% 17.99/18.18  %**** clause counter: 1528 ****
% 17.99/18.18  
% 17.99/18.18  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:2,axioms:102,ps:3,u:5,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:1528,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------