TSTP Solution File: SET909+1 by LEO-II---1.7.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : LEO-II---1.7.0
% Problem  : SET909+1 : TPTP v8.1.0. Released v3.2.0.
% Transfm  : none
% Format   : tptp
% Command  : leo --timeout %d --proofoutput 1 --foatp e --atp e=./eprover %s

% Computer : n022.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 03:06:09 EDT 2022

% Result   : Theorem 0.21s 0.55s
% Output   : CNFRefutation 0.21s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   23
%            Number of leaves      :   26
% Syntax   : Number of formulae    :  205 (  90 unt;  13 typ;   0 def)
%            Number of atoms       : 1390 ( 623 equ;   0 cnn)
%            Maximal formula atoms :    4 (   7 avg)
%            Number of connectives : 3178 ( 630   ~; 544   |;  22   &;1966   @)
%                                         (  10 <=>;   6  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   4 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   14 (  14   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   16 (  13 usr;   8 con; 0-3 aty)
%            Number of variables   :  603 (   0   ^ 599   !;   4   ?; 603   :)

% Comments : 
%------------------------------------------------------------------------------
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_sK1_A,type,
    sK1_A: $i ).

thf(tp_sK2_SY27,type,
    sK2_SY27: $i ).

thf(tp_sK3_SY29,type,
    sK3_SY29: $i ).

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

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

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

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

thf(tp_sK8_B,type,
    sK8_B: $i > $i ).

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

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

thf(1,axiom,
    ? [A: $i] :
      ~ ( empty @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rc2_xboole_0) ).

thf(2,axiom,
    ? [A: $i] : ( empty @ A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rc1_xboole_0) ).

thf(3,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ A )
      = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',idempotence_k2_xboole_0) ).

thf(4,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ B @ A ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc3_xboole_0) ).

thf(5,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ A @ B ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc2_xboole_0) ).

thf(6,axiom,
    empty @ empty_set,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',fc1_xboole_0) ).

thf(7,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(8,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(9,axiom,
    ! [A: $i] :
      ( ( A = empty_set )
    <=> ! [B: $i] :
          ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',d1_xboole_0) ).

thf(10,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(11,axiom,
    ! [A: $i,B: $i] :
      ( ( unordered_pair @ A @ B )
      = ( unordered_pair @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',commutativity_k2_tarski) ).

thf(12,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',antisymmetry_r2_hidden) ).

thf(13,conjecture,
    ! [A: $i,B: $i,C: $i] :
      ( ( set_union2 @ ( unordered_pair @ A @ B ) @ C )
     != empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',t50_zfmisc_1) ).

thf(14,negated_conjecture,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( set_union2 @ ( unordered_pair @ A @ B ) @ C )
         != empty_set ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[13]) ).

thf(15,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( set_union2 @ ( unordered_pair @ A @ B ) @ C )
         != empty_set ) )
    = $false ),
    inference(unfold_def,[status(thm)],[14]) ).

thf(16,plain,
    ( ( ? [A: $i] :
          ~ ( empty @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1]) ).

thf(17,plain,
    ( ( ? [A: $i] : ( empty @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[2]) ).

thf(18,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[3]) ).

thf(19,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[4]) ).

thf(20,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[5]) ).

thf(21,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(unfold_def,[status(thm)],[6]) ).

thf(22,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)],[7]) ).

thf(23,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)],[8]) ).

thf(24,plain,
    ( ( ! [A: $i] :
          ( ( A = empty_set )
        <=> ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[9]) ).

thf(25,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[10]) ).

thf(26,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( unordered_pair @ A @ B )
          = ( unordered_pair @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[11]) ).

thf(27,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[12]) ).

thf(28,plain,
    ( ( ! [SY27: $i,SY28: $i] :
          ( ( set_union2 @ ( unordered_pair @ sK1_A @ SY27 ) @ SY28 )
         != empty_set ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[15]) ).

thf(29,plain,
    ( ( ! [SY29: $i] :
          ( ( set_union2 @ ( unordered_pair @ sK1_A @ sK2_SY27 ) @ SY29 )
         != empty_set ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[28]) ).

thf(30,plain,
    ( ( ( ( set_union2 @ ( unordered_pair @ sK1_A @ sK2_SY27 ) @ sK3_SY29 )
       != empty_set ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[29]) ).

thf(31,plain,
    ( ( ~ ( ( ( set_union2 @ ( unordered_pair @ sK1_A @ sK2_SY27 ) @ sK3_SY29 )
           != empty_set ) ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[30]) ).

thf(32,plain,
    ( ( ( set_union2 @ ( unordered_pair @ sK1_A @ sK2_SY27 ) @ sK3_SY29 )
      = empty_set )
    = $true ),
    inference(extcnf_combined,[status(esa)],[31]) ).

thf(33,plain,
    ( ( ~ ( empty @ sK4_A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[16]) ).

thf(34,plain,
    ( ( empty @ sK5_A )
    = $true ),
    inference(extcnf_combined,[status(esa)],[17]) ).

thf(35,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[18]) ).

thf(36,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[19]) ).

thf(37,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[20]) ).

thf(38,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK6_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK6_D @ C @ B @ A ) @ A ) )
                & ( ~ ( in @ ( sK6_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK6_D @ C @ B @ A ) @ B ) )
                & ( ( in @ ( sK6_D @ C @ B @ A ) @ C )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK6_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)],[22]) ).

thf(39,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK7_D @ C @ B @ A ) @ C )
                  | ( ( sK7_D @ C @ B @ A )
                   != A ) )
                & ( ~ ( in @ ( sK7_D @ C @ B @ A ) @ C )
                  | ( ( sK7_D @ C @ B @ A )
                   != B ) )
                & ( ( in @ ( sK7_D @ C @ B @ A ) @ C )
                  | ( ( sK7_D @ C @ B @ A )
                    = A )
                  | ( ( sK7_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)],[23]) ).

thf(40,plain,
    ( ( ! [A: $i] :
          ( ( in @ ( sK8_B @ A ) @ A )
          | ( A = empty_set ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[24]) ).

thf(41,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ~ ( in @ B @ A ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[27]) ).

thf(42,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( in @ A @ B )
          | ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[41]) ).

thf(43,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( unordered_pair @ A @ B )
          = ( unordered_pair @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[26]) ).

thf(44,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[25]) ).

thf(45,plain,
    ( ( ! [A: $i] :
          ( ( in @ ( sK8_B @ A ) @ A )
          | ( A = empty_set ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] :
              ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[40]) ).

thf(46,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK7_D @ C @ B @ A ) @ C )
                  | ( ( sK7_D @ C @ B @ A )
                   != A ) )
                & ( ~ ( in @ ( sK7_D @ C @ B @ A ) @ C )
                  | ( ( sK7_D @ C @ B @ A )
                   != B ) )
                & ( ( in @ ( sK7_D @ C @ B @ A ) @ C )
                  | ( ( sK7_D @ C @ B @ A )
                    = A )
                  | ( ( sK7_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)],[39]) ).

thf(47,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i,C: $i] :
              ( ( ( ~ ( in @ ( sK6_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK6_D @ C @ B @ A ) @ A ) )
                & ( ~ ( in @ ( sK6_D @ C @ B @ A ) @ C )
                  | ~ ( in @ ( sK6_D @ C @ B @ A ) @ B ) )
                & ( ( in @ ( sK6_D @ C @ B @ A ) @ C )
                  | ( in @ ( sK6_D @ C @ B @ A ) @ A )
                  | ( in @ ( sK6_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)],[38]) ).

thf(48,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(copy,[status(thm)],[21]) ).

thf(49,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[37]) ).

thf(50,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[36]) ).

thf(51,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[35]) ).

thf(52,plain,
    ( ( empty @ sK5_A )
    = $true ),
    inference(copy,[status(thm)],[34]) ).

thf(53,plain,
    ( ( ~ ( empty @ sK4_A ) )
    = $true ),
    inference(copy,[status(thm)],[33]) ).

thf(54,plain,
    ( ( ( set_union2 @ ( unordered_pair @ sK1_A @ sK2_SY27 ) @ sK3_SY29 )
      = empty_set )
    = $true ),
    inference(copy,[status(thm)],[32]) ).

thf(55,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ( ( sK7_D @ SX2 @ SX1 @ SX0 )
                                 != SX0 ) )
                            | ~ ( ~ ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ( ( sK7_D @ SX2 @ SX1 @ SX0 )
                                 != SX1 ) ) )
                      | ~ ( ( in @ ( sK7_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                          | ( ( sK7_D @ SX2 @ SX1 @ SX0 )
                            = SX0 )
                          | ( ( sK7_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)],[46]) ).

thf(56,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ! [SX1: $i,SX2: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ~ ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX0 ) )
                            | ~ ( ~ ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                                | ~ ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX1 ) ) )
                      | ~ ( ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX2 )
                          | ( in @ ( sK6_D @ SX2 @ SX1 @ SX0 ) @ SX0 )
                          | ( in @ ( sK6_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)],[47]) ).

thf(57,plain,
    ( ( ~ ( ~ ! [SX0: $i] :
                ( ( in @ ( sK8_B @ SX0 ) @ SX0 )
                | ( SX0 = empty_set ) )
          | ~ ! [SX0: $i] :
                ( ( SX0 != empty_set )
                | ! [SX1: $i] :
                    ~ ( in @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[45]) ).

thf(58,plain,
    ! [SV1: $i] :
      ( ( ! [SY30: $i] :
            ( ~ ( in @ SV1 @ SY30 )
            | ~ ( in @ SY30 @ SV1 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[42]) ).

thf(59,plain,
    ! [SV2: $i] :
      ( ( ! [SY31: $i] :
            ( ( unordered_pair @ SV2 @ SY31 )
            = ( unordered_pair @ SY31 @ SV2 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[43]) ).

thf(60,plain,
    ! [SV3: $i] :
      ( ( ! [SY32: $i] :
            ( ( set_union2 @ SV3 @ SY32 )
            = ( set_union2 @ SY32 @ SV3 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[44]) ).

thf(61,plain,
    ! [SV4: $i] :
      ( ( ( empty @ SV4 )
        | ! [SY33: $i] :
            ~ ( empty @ ( set_union2 @ SV4 @ SY33 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[49]) ).

thf(62,plain,
    ! [SV5: $i] :
      ( ( ( empty @ SV5 )
        | ! [SY34: $i] :
            ~ ( empty @ ( set_union2 @ SY34 @ SV5 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[50]) ).

thf(63,plain,
    ! [SV6: $i] :
      ( ( ( set_union2 @ SV6 @ SV6 )
        = SV6 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[51]) ).

thf(64,plain,
    ( ( empty @ sK4_A )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[53]) ).

thf(65,plain,
    ! [SV7: $i] :
      ( ( ~ ( ~ ! [SY35: $i,SY36: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                                | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                                 != SV7 ) )
                            | ~ ( ~ ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                                | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                                 != SY35 ) ) )
                      | ~ ( ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                          | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                            = SV7 )
                          | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                            = SY35 ) ) )
                  | ( SY36
                    = ( unordered_pair @ SV7 @ SY35 ) ) )
            | ~ ! [SY37: $i,SY38: $i] :
                  ( ( SY38
                   != ( unordered_pair @ SV7 @ SY37 ) )
                  | ~ ( ~ ! [SY39: $i] :
                            ( ~ ( in @ SY39 @ SY38 )
                            | ( SY39 = SV7 )
                            | ( SY39 = SY37 ) )
                      | ~ ~ ( ~ ! [SY40: $i] :
                                  ( ( SY40 != SV7 )
                                  | ( in @ SY40 @ SY38 ) )
                            | ~ ! [SX3: $i] :
                                  ( ( SX3 != SY37 )
                                  | ( in @ SX3 @ SY38 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[55]) ).

thf(66,plain,
    ! [SV8: $i] :
      ( ( ~ ( ~ ! [SY42: $i,SY43: $i] :
                  ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                                | ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SV8 ) )
                            | ~ ( ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                                | ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY42 ) ) )
                      | ~ ( ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                          | ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SV8 )
                          | ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY42 ) ) )
                  | ( SY43
                    = ( set_union2 @ SV8 @ SY42 ) ) )
            | ~ ! [SY44: $i,SY45: $i] :
                  ( ( SY45
                   != ( set_union2 @ SV8 @ SY44 ) )
                  | ~ ( ~ ! [SY46: $i] :
                            ( ~ ( in @ SY46 @ SY45 )
                            | ( in @ SY46 @ SV8 )
                            | ( in @ SY46 @ SY44 ) )
                      | ~ ~ ( ~ ! [SY47: $i] :
                                  ( ~ ( in @ SY47 @ SV8 )
                                  | ( in @ SY47 @ SY45 ) )
                            | ~ ! [SX3: $i] :
                                  ( ~ ( in @ SX3 @ SY44 )
                                  | ( in @ SX3 @ SY45 ) ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[56]) ).

thf(67,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( in @ ( sK8_B @ SX0 ) @ SX0 )
            | ( SX0 = empty_set ) )
      | ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] :
                ~ ( in @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[57]) ).

thf(68,plain,
    ! [SV9: $i,SV1: $i] :
      ( ( ~ ( in @ SV1 @ SV9 )
        | ~ ( in @ SV9 @ SV1 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[58]) ).

thf(69,plain,
    ! [SV10: $i,SV2: $i] :
      ( ( ( unordered_pair @ SV2 @ SV10 )
        = ( unordered_pair @ SV10 @ SV2 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[59]) ).

thf(70,plain,
    ! [SV11: $i,SV3: $i] :
      ( ( ( set_union2 @ SV3 @ SV11 )
        = ( set_union2 @ SV11 @ SV3 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[60]) ).

thf(71,plain,
    ! [SV4: $i] :
      ( ( ( empty @ SV4 )
        = $true )
      | ( ( ! [SY33: $i] :
              ~ ( empty @ ( set_union2 @ SV4 @ SY33 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[61]) ).

thf(72,plain,
    ! [SV5: $i] :
      ( ( ( empty @ SV5 )
        = $true )
      | ( ( ! [SY34: $i] :
              ~ ( empty @ ( set_union2 @ SY34 @ SV5 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[62]) ).

thf(73,plain,
    ! [SV7: $i] :
      ( ( ~ ! [SY35: $i,SY36: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                            | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                             != SV7 ) )
                        | ~ ( ~ ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                            | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                             != SY35 ) ) )
                  | ~ ( ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                      | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                        = SV7 )
                      | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                        = SY35 ) ) )
              | ( SY36
                = ( unordered_pair @ SV7 @ SY35 ) ) )
        | ~ ! [SY37: $i,SY38: $i] :
              ( ( SY38
               != ( unordered_pair @ SV7 @ SY37 ) )
              | ~ ( ~ ! [SY39: $i] :
                        ( ~ ( in @ SY39 @ SY38 )
                        | ( SY39 = SV7 )
                        | ( SY39 = SY37 ) )
                  | ~ ~ ( ~ ! [SY40: $i] :
                              ( ( SY40 != SV7 )
                              | ( in @ SY40 @ SY38 ) )
                        | ~ ! [SX3: $i] :
                              ( ( SX3 != SY37 )
                              | ( in @ SX3 @ SY38 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[65]) ).

thf(74,plain,
    ! [SV8: $i] :
      ( ( ~ ! [SY42: $i,SY43: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                            | ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SV8 ) )
                        | ~ ( ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                            | ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY42 ) ) )
                  | ~ ( ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                      | ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SV8 )
                      | ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY42 ) ) )
              | ( SY43
                = ( set_union2 @ SV8 @ SY42 ) ) )
        | ~ ! [SY44: $i,SY45: $i] :
              ( ( SY45
               != ( set_union2 @ SV8 @ SY44 ) )
              | ~ ( ~ ! [SY46: $i] :
                        ( ~ ( in @ SY46 @ SY45 )
                        | ( in @ SY46 @ SV8 )
                        | ( in @ SY46 @ SY44 ) )
                  | ~ ~ ( ~ ! [SY47: $i] :
                              ( ~ ( in @ SY47 @ SV8 )
                              | ( in @ SY47 @ SY45 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY44 )
                              | ( in @ SX3 @ SY45 ) ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[66]) ).

thf(75,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( in @ ( sK8_B @ SX0 ) @ SX0 )
            | ( SX0 = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[67]) ).

thf(76,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] :
                ~ ( in @ SX1 @ SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[67]) ).

thf(77,plain,
    ! [SV9: $i,SV1: $i] :
      ( ( ( ~ ( in @ SV1 @ SV9 ) )
        = $true )
      | ( ( ~ ( in @ SV9 @ SV1 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[68]) ).

thf(78,plain,
    ! [SV12: $i,SV4: $i] :
      ( ( ( ~ ( empty @ ( set_union2 @ SV4 @ SV12 ) ) )
        = $true )
      | ( ( empty @ SV4 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[71]) ).

thf(79,plain,
    ! [SV5: $i,SV13: $i] :
      ( ( ( ~ ( empty @ ( set_union2 @ SV13 @ SV5 ) ) )
        = $true )
      | ( ( empty @ SV5 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[72]) ).

thf(80,plain,
    ! [SV7: $i] :
      ( ( ~ ! [SY35: $i,SY36: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                            | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                             != SV7 ) )
                        | ~ ( ~ ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                            | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                             != SY35 ) ) )
                  | ~ ( ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                      | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                        = SV7 )
                      | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                        = SY35 ) ) )
              | ( SY36
                = ( unordered_pair @ SV7 @ SY35 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[73]) ).

thf(81,plain,
    ! [SV7: $i] :
      ( ( ~ ! [SY37: $i,SY38: $i] :
              ( ( SY38
               != ( unordered_pair @ SV7 @ SY37 ) )
              | ~ ( ~ ! [SY39: $i] :
                        ( ~ ( in @ SY39 @ SY38 )
                        | ( SY39 = SV7 )
                        | ( SY39 = SY37 ) )
                  | ~ ~ ( ~ ! [SY40: $i] :
                              ( ( SY40 != SV7 )
                              | ( in @ SY40 @ SY38 ) )
                        | ~ ! [SX3: $i] :
                              ( ( SX3 != SY37 )
                              | ( in @ SX3 @ SY38 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[73]) ).

thf(82,plain,
    ! [SV8: $i] :
      ( ( ~ ! [SY42: $i,SY43: $i] :
              ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                            | ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SV8 ) )
                        | ~ ( ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                            | ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY42 ) ) )
                  | ~ ( ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                      | ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SV8 )
                      | ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY42 ) ) )
              | ( SY43
                = ( set_union2 @ SV8 @ SY42 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[74]) ).

thf(83,plain,
    ! [SV8: $i] :
      ( ( ~ ! [SY44: $i,SY45: $i] :
              ( ( SY45
               != ( set_union2 @ SV8 @ SY44 ) )
              | ~ ( ~ ! [SY46: $i] :
                        ( ~ ( in @ SY46 @ SY45 )
                        | ( in @ SY46 @ SV8 )
                        | ( in @ SY46 @ SY44 ) )
                  | ~ ~ ( ~ ! [SY47: $i] :
                              ( ~ ( in @ SY47 @ SV8 )
                              | ( in @ SY47 @ SY45 ) )
                        | ~ ! [SX3: $i] :
                              ( ~ ( in @ SX3 @ SY44 )
                              | ( in @ SX3 @ SY45 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[74]) ).

thf(84,plain,
    ( ( ! [SX0: $i] :
          ( ( in @ ( sK8_B @ SX0 ) @ SX0 )
          | ( SX0 = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[75]) ).

thf(85,plain,
    ( ( ! [SX0: $i] :
          ( ( SX0 != empty_set )
          | ! [SX1: $i] :
              ~ ( in @ SX1 @ SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[76]) ).

thf(86,plain,
    ! [SV9: $i,SV1: $i] :
      ( ( ( in @ SV1 @ SV9 )
        = $false )
      | ( ( ~ ( in @ SV9 @ SV1 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[77]) ).

thf(87,plain,
    ! [SV12: $i,SV4: $i] :
      ( ( ( empty @ ( set_union2 @ SV4 @ SV12 ) )
        = $false )
      | ( ( empty @ SV4 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[78]) ).

thf(88,plain,
    ! [SV5: $i,SV13: $i] :
      ( ( ( empty @ ( set_union2 @ SV13 @ SV5 ) )
        = $false )
      | ( ( empty @ SV5 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[79]) ).

thf(89,plain,
    ! [SV7: $i] :
      ( ( ! [SY35: $i,SY36: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                          | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                           != SV7 ) )
                      | ~ ( ~ ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                          | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                           != SY35 ) ) )
                | ~ ( ( in @ ( sK7_D @ SY36 @ SY35 @ SV7 ) @ SY36 )
                    | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                      = SV7 )
                    | ( ( sK7_D @ SY36 @ SY35 @ SV7 )
                      = SY35 ) ) )
            | ( SY36
              = ( unordered_pair @ SV7 @ SY35 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[80]) ).

thf(90,plain,
    ! [SV7: $i] :
      ( ( ! [SY37: $i,SY38: $i] :
            ( ( SY38
             != ( unordered_pair @ SV7 @ SY37 ) )
            | ~ ( ~ ! [SY39: $i] :
                      ( ~ ( in @ SY39 @ SY38 )
                      | ( SY39 = SV7 )
                      | ( SY39 = SY37 ) )
                | ~ ~ ( ~ ! [SY40: $i] :
                            ( ( SY40 != SV7 )
                            | ( in @ SY40 @ SY38 ) )
                      | ~ ! [SX3: $i] :
                            ( ( SX3 != SY37 )
                            | ( in @ SX3 @ SY38 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[81]) ).

thf(91,plain,
    ! [SV8: $i] :
      ( ( ! [SY42: $i,SY43: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                          | ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SV8 ) )
                      | ~ ( ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                          | ~ ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY42 ) ) )
                | ~ ( ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY43 )
                    | ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SV8 )
                    | ( in @ ( sK6_D @ SY43 @ SY42 @ SV8 ) @ SY42 ) ) )
            | ( SY43
              = ( set_union2 @ SV8 @ SY42 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[82]) ).

thf(92,plain,
    ! [SV8: $i] :
      ( ( ! [SY44: $i,SY45: $i] :
            ( ( SY45
             != ( set_union2 @ SV8 @ SY44 ) )
            | ~ ( ~ ! [SY46: $i] :
                      ( ~ ( in @ SY46 @ SY45 )
                      | ( in @ SY46 @ SV8 )
                      | ( in @ SY46 @ SY44 ) )
                | ~ ~ ( ~ ! [SY47: $i] :
                            ( ~ ( in @ SY47 @ SV8 )
                            | ( in @ SY47 @ SY45 ) )
                      | ~ ! [SX3: $i] :
                            ( ~ ( in @ SX3 @ SY44 )
                            | ( in @ SX3 @ SY45 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[83]) ).

thf(93,plain,
    ! [SV14: $i] :
      ( ( ( in @ ( sK8_B @ SV14 ) @ SV14 )
        | ( SV14 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[84]) ).

thf(94,plain,
    ! [SV15: $i] :
      ( ( ( SV15 != empty_set )
        | ! [SY49: $i] :
            ~ ( in @ SY49 @ SV15 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[85]) ).

thf(95,plain,
    ! [SV1: $i,SV9: $i] :
      ( ( ( in @ SV9 @ SV1 )
        = $false )
      | ( ( in @ SV1 @ SV9 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[86]) ).

thf(96,plain,
    ! [SV7: $i,SV16: $i] :
      ( ( ! [SY50: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK7_D @ SY50 @ SV16 @ SV7 ) @ SY50 )
                          | ( ( sK7_D @ SY50 @ SV16 @ SV7 )
                           != SV7 ) )
                      | ~ ( ~ ( in @ ( sK7_D @ SY50 @ SV16 @ SV7 ) @ SY50 )
                          | ( ( sK7_D @ SY50 @ SV16 @ SV7 )
                           != SV16 ) ) )
                | ~ ( ( in @ ( sK7_D @ SY50 @ SV16 @ SV7 ) @ SY50 )
                    | ( ( sK7_D @ SY50 @ SV16 @ SV7 )
                      = SV7 )
                    | ( ( sK7_D @ SY50 @ SV16 @ SV7 )
                      = SV16 ) ) )
            | ( SY50
              = ( unordered_pair @ SV7 @ SV16 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[89]) ).

thf(97,plain,
    ! [SV17: $i,SV7: $i] :
      ( ( ! [SY51: $i] :
            ( ( SY51
             != ( unordered_pair @ SV7 @ SV17 ) )
            | ~ ( ~ ! [SY52: $i] :
                      ( ~ ( in @ SY52 @ SY51 )
                      | ( SY52 = SV7 )
                      | ( SY52 = SV17 ) )
                | ~ ~ ( ~ ! [SY40: $i] :
                            ( ( SY40 != SV7 )
                            | ( in @ SY40 @ SY51 ) )
                      | ~ ! [SY54: $i] :
                            ( ( SY54 != SV17 )
                            | ( in @ SY54 @ SY51 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[90]) ).

thf(98,plain,
    ! [SV8: $i,SV18: $i] :
      ( ( ! [SY55: $i] :
            ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK6_D @ SY55 @ SV18 @ SV8 ) @ SY55 )
                          | ~ ( in @ ( sK6_D @ SY55 @ SV18 @ SV8 ) @ SV8 ) )
                      | ~ ( ~ ( in @ ( sK6_D @ SY55 @ SV18 @ SV8 ) @ SY55 )
                          | ~ ( in @ ( sK6_D @ SY55 @ SV18 @ SV8 ) @ SV18 ) ) )
                | ~ ( ( in @ ( sK6_D @ SY55 @ SV18 @ SV8 ) @ SY55 )
                    | ( in @ ( sK6_D @ SY55 @ SV18 @ SV8 ) @ SV8 )
                    | ( in @ ( sK6_D @ SY55 @ SV18 @ SV8 ) @ SV18 ) ) )
            | ( SY55
              = ( set_union2 @ SV8 @ SV18 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[91]) ).

thf(99,plain,
    ! [SV19: $i,SV8: $i] :
      ( ( ! [SY56: $i] :
            ( ( SY56
             != ( set_union2 @ SV8 @ SV19 ) )
            | ~ ( ~ ! [SY57: $i] :
                      ( ~ ( in @ SY57 @ SY56 )
                      | ( in @ SY57 @ SV8 )
                      | ( in @ SY57 @ SV19 ) )
                | ~ ~ ( ~ ! [SY47: $i] :
                            ( ~ ( in @ SY47 @ SV8 )
                            | ( in @ SY47 @ SY56 ) )
                      | ~ ! [SY59: $i] :
                            ( ~ ( in @ SY59 @ SV19 )
                            | ( in @ SY59 @ SY56 ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[92]) ).

thf(100,plain,
    ! [SV14: $i] :
      ( ( ( in @ ( sK8_B @ SV14 ) @ SV14 )
        = $true )
      | ( ( SV14 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[93]) ).

thf(101,plain,
    ! [SV15: $i] :
      ( ( ( ( SV15 != empty_set ) )
        = $true )
      | ( ( ! [SY49: $i] :
              ~ ( in @ SY49 @ SV15 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[94]) ).

thf(102,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                      | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                       != SV7 ) )
                  | ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                      | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                       != SV16 ) ) )
            | ~ ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                  = SV7 )
                | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                  = SV16 ) ) )
        | ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[96]) ).

thf(103,plain,
    ! [SV17: $i,SV7: $i,SV21: $i] :
      ( ( ( SV21
         != ( unordered_pair @ SV7 @ SV17 ) )
        | ~ ( ~ ! [SY60: $i] :
                  ( ~ ( in @ SY60 @ SV21 )
                  | ( SY60 = SV7 )
                  | ( SY60 = SV17 ) )
            | ~ ~ ( ~ ! [SY61: $i] :
                        ( ( SY61 != SV7 )
                        | ( in @ SY61 @ SV21 ) )
                  | ~ ! [SY62: $i] :
                        ( ( SY62 != SV17 )
                        | ( in @ SY62 @ SV21 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[97]) ).

thf(104,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                      | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 ) )
                  | ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                      | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) )
            | ~ ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 )
                | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) )
        | ( SV22
          = ( set_union2 @ SV8 @ SV18 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[98]) ).

thf(105,plain,
    ! [SV19: $i,SV8: $i,SV23: $i] :
      ( ( ( SV23
         != ( set_union2 @ SV8 @ SV19 ) )
        | ~ ( ~ ! [SY63: $i] :
                  ( ~ ( in @ SY63 @ SV23 )
                  | ( in @ SY63 @ SV8 )
                  | ( in @ SY63 @ SV19 ) )
            | ~ ~ ( ~ ! [SY64: $i] :
                        ( ~ ( in @ SY64 @ SV8 )
                        | ( in @ SY64 @ SV23 ) )
                  | ~ ! [SY65: $i] :
                        ( ~ ( in @ SY65 @ SV19 )
                        | ( in @ SY65 @ SV23 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[99]) ).

thf(106,plain,
    ! [SV15: $i] :
      ( ( ( SV15 = empty_set )
        = $false )
      | ( ( ! [SY49: $i] :
              ~ ( in @ SY49 @ SV15 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[101]) ).

thf(107,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                        | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                         != SV7 ) )
                    | ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                        | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                         != SV16 ) ) )
              | ~ ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                  | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                    = SV7 )
                  | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                    = SV16 ) ) ) )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[102]) ).

thf(108,plain,
    ! [SV17: $i,SV7: $i,SV21: $i] :
      ( ( ( ( SV21
           != ( unordered_pair @ SV7 @ SV17 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY60: $i] :
                    ( ~ ( in @ SY60 @ SV21 )
                    | ( SY60 = SV7 )
                    | ( SY60 = SV17 ) )
              | ~ ~ ( ~ ! [SY61: $i] :
                          ( ( SY61 != SV7 )
                          | ( in @ SY61 @ SV21 ) )
                    | ~ ! [SY62: $i] :
                          ( ( SY62 != SV17 )
                          | ( in @ SY62 @ SV21 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[103]) ).

thf(109,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                        | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 ) )
                    | ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                        | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) )
              | ~ ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                  | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 )
                  | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) ) )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[104]) ).

thf(110,plain,
    ! [SV19: $i,SV8: $i,SV23: $i] :
      ( ( ( ( SV23
           != ( set_union2 @ SV8 @ SV19 ) ) )
        = $true )
      | ( ( ~ ( ~ ! [SY63: $i] :
                    ( ~ ( in @ SY63 @ SV23 )
                    | ( in @ SY63 @ SV8 )
                    | ( in @ SY63 @ SV19 ) )
              | ~ ~ ( ~ ! [SY64: $i] :
                          ( ~ ( in @ SY64 @ SV8 )
                          | ( in @ SY64 @ SV23 ) )
                    | ~ ! [SY65: $i] :
                          ( ~ ( in @ SY65 @ SV19 )
                          | ( in @ SY65 @ SV23 ) ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[105]) ).

thf(111,plain,
    ! [SV15: $i,SV24: $i] :
      ( ( ( ~ ( in @ SV24 @ SV15 ) )
        = $true )
      | ( ( SV15 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[106]) ).

thf(112,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                    | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                     != SV7 ) )
                | ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                    | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                     != SV16 ) ) )
          | ~ ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
              | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                = SV7 )
              | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                = SV16 ) ) )
        = $false )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[107]) ).

thf(113,plain,
    ! [SV17: $i,SV7: $i,SV21: $i] :
      ( ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY60: $i] :
                    ( ~ ( in @ SY60 @ SV21 )
                    | ( SY60 = SV7 )
                    | ( SY60 = SV17 ) )
              | ~ ~ ( ~ ! [SY61: $i] :
                          ( ( SY61 != SV7 )
                          | ( in @ SY61 @ SV21 ) )
                    | ~ ! [SY62: $i] :
                          ( ( SY62 != SV17 )
                          | ( in @ SY62 @ SV21 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[108]) ).

thf(114,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                    | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 ) )
                | ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                    | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) )
          | ~ ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
              | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 )
              | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) )
        = $false )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[109]) ).

thf(115,plain,
    ! [SV19: $i,SV8: $i,SV23: $i] :
      ( ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false )
      | ( ( ~ ( ~ ! [SY63: $i] :
                    ( ~ ( in @ SY63 @ SV23 )
                    | ( in @ SY63 @ SV8 )
                    | ( in @ SY63 @ SV19 ) )
              | ~ ~ ( ~ ! [SY64: $i] :
                          ( ~ ( in @ SY64 @ SV8 )
                          | ( in @ SY64 @ SV23 ) )
                    | ~ ! [SY65: $i] :
                          ( ~ ( in @ SY65 @ SV19 )
                          | ( in @ SY65 @ SV23 ) ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[110]) ).

thf(116,plain,
    ! [SV15: $i,SV24: $i] :
      ( ( ( in @ SV24 @ SV15 )
        = $false )
      | ( ( SV15 = empty_set )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[111]) ).

thf(117,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                    | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                     != SV7 ) )
                | ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                    | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                     != SV16 ) ) ) )
        = $false )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[112]) ).

thf(118,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
              | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                = SV7 )
              | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                = SV16 ) ) )
        = $false )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[112]) ).

thf(119,plain,
    ! [SV17: $i,SV7: $i,SV21: $i] :
      ( ( ( ~ ! [SY60: $i] :
                ( ~ ( in @ SY60 @ SV21 )
                | ( SY60 = SV7 )
                | ( SY60 = SV17 ) )
          | ~ ~ ( ~ ! [SY61: $i] :
                      ( ( SY61 != SV7 )
                      | ( in @ SY61 @ SV21 ) )
                | ~ ! [SY62: $i] :
                      ( ( SY62 != SV17 )
                      | ( in @ SY62 @ SV21 ) ) ) )
        = $false )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[113]) ).

thf(120,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ~ ( ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                    | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 ) )
                | ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                    | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) ) )
        = $false )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[114]) ).

thf(121,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
              | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 )
              | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) )
        = $false )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[114]) ).

thf(122,plain,
    ! [SV19: $i,SV8: $i,SV23: $i] :
      ( ( ( ~ ! [SY63: $i] :
                ( ~ ( in @ SY63 @ SV23 )
                | ( in @ SY63 @ SV8 )
                | ( in @ SY63 @ SV19 ) )
          | ~ ~ ( ~ ! [SY64: $i] :
                      ( ~ ( in @ SY64 @ SV8 )
                      | ( in @ SY64 @ SV23 ) )
                | ~ ! [SY65: $i] :
                      ( ~ ( in @ SY65 @ SV19 )
                      | ( in @ SY65 @ SV23 ) ) ) )
        = $false )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[115]) ).

thf(123,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                  | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                   != SV7 ) )
              | ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
                  | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
                   != SV16 ) ) ) )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[117]) ).

thf(124,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
          | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
            = SV7 )
          | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
            = SV16 ) )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[118]) ).

thf(125,plain,
    ! [SV17: $i,SV7: $i,SV21: $i] :
      ( ( ( ~ ! [SY60: $i] :
                ( ~ ( in @ SY60 @ SV21 )
                | ( SY60 = SV7 )
                | ( SY60 = SV17 ) ) )
        = $false )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[119]) ).

thf(126,plain,
    ! [SV17: $i,SV21: $i,SV7: $i] :
      ( ( ( ~ ~ ( ~ ! [SY61: $i] :
                      ( ( SY61 != SV7 )
                      | ( in @ SY61 @ SV21 ) )
                | ~ ! [SY62: $i] :
                      ( ( SY62 != SV17 )
                      | ( in @ SY62 @ SV21 ) ) ) )
        = $false )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[119]) ).

thf(127,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ( ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                  | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 ) )
              | ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
                  | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) ) )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[120]) ).

thf(128,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
          | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 )
          | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[121]) ).

thf(129,plain,
    ! [SV19: $i,SV8: $i,SV23: $i] :
      ( ( ( ~ ! [SY63: $i] :
                ( ~ ( in @ SY63 @ SV23 )
                | ( in @ SY63 @ SV8 )
                | ( in @ SY63 @ SV19 ) ) )
        = $false )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[122]) ).

thf(130,plain,
    ! [SV19: $i,SV23: $i,SV8: $i] :
      ( ( ( ~ ~ ( ~ ! [SY64: $i] :
                      ( ~ ( in @ SY64 @ SV8 )
                      | ( in @ SY64 @ SV23 ) )
                | ~ ! [SY65: $i] :
                      ( ~ ( in @ SY65 @ SV19 )
                      | ( in @ SY65 @ SV23 ) ) ) )
        = $false )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[122]) ).

thf(131,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
              | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
               != SV7 ) )
          | ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
              | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
               != SV16 ) ) )
        = $false )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[123]) ).

thf(132,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
        = $true )
      | ( ( ( ( sK7_D @ SV20 @ SV16 @ SV7 )
            = SV7 )
          | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
            = SV16 ) )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[124]) ).

thf(133,plain,
    ! [SV17: $i,SV7: $i,SV21: $i] :
      ( ( ( ! [SY60: $i] :
              ( ~ ( in @ SY60 @ SV21 )
              | ( SY60 = SV7 )
              | ( SY60 = SV17 ) ) )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[125]) ).

thf(134,plain,
    ! [SV17: $i,SV21: $i,SV7: $i] :
      ( ( ( ~ ( ~ ! [SY61: $i] :
                    ( ( SY61 != SV7 )
                    | ( in @ SY61 @ SV21 ) )
              | ~ ! [SY62: $i] :
                    ( ( SY62 != SV17 )
                    | ( in @ SY62 @ SV21 ) ) ) )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[126]) ).

thf(135,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
              | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 ) )
          | ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
              | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) )
        = $false )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[127]) ).

thf(136,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
        = $true )
      | ( ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 )
          | ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[128]) ).

thf(137,plain,
    ! [SV19: $i,SV8: $i,SV23: $i] :
      ( ( ( ! [SY63: $i] :
              ( ~ ( in @ SY63 @ SV23 )
              | ( in @ SY63 @ SV8 )
              | ( in @ SY63 @ SV19 ) ) )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[129]) ).

thf(138,plain,
    ! [SV19: $i,SV23: $i,SV8: $i] :
      ( ( ( ~ ( ~ ! [SY64: $i] :
                    ( ~ ( in @ SY64 @ SV8 )
                    | ( in @ SY64 @ SV23 ) )
              | ~ ! [SY65: $i] :
                    ( ~ ( in @ SY65 @ SV19 )
                    | ( in @ SY65 @ SV23 ) ) ) )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[130]) ).

thf(139,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
              | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
               != SV7 ) ) )
        = $false )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[131]) ).

thf(140,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
              | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
               != SV16 ) ) )
        = $false )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[131]) ).

thf(141,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ( sK7_D @ SV20 @ SV16 @ SV7 )
          = SV7 )
        = $true )
      | ( ( ( sK7_D @ SV20 @ SV16 @ SV7 )
          = SV16 )
        = $true )
      | ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[132]) ).

thf(142,plain,
    ! [SV17: $i,SV7: $i,SV21: $i,SV25: $i] :
      ( ( ( ~ ( in @ SV25 @ SV21 )
          | ( SV25 = SV7 )
          | ( SV25 = SV17 ) )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[133]) ).

thf(143,plain,
    ! [SV17: $i,SV21: $i,SV7: $i] :
      ( ( ( ~ ! [SY61: $i] :
                ( ( SY61 != SV7 )
                | ( in @ SY61 @ SV21 ) )
          | ~ ! [SY62: $i] :
                ( ( SY62 != SV17 )
                | ( in @ SY62 @ SV21 ) ) )
        = $false )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[134]) ).

thf(144,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
              | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 ) ) )
        = $false )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[135]) ).

thf(145,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
              | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) ) )
        = $false )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[135]) ).

thf(146,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 )
        = $true )
      | ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 )
        = $true )
      | ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[136]) ).

thf(147,plain,
    ! [SV19: $i,SV8: $i,SV23: $i,SV26: $i] :
      ( ( ( ~ ( in @ SV26 @ SV23 )
          | ( in @ SV26 @ SV8 )
          | ( in @ SV26 @ SV19 ) )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[137]) ).

thf(148,plain,
    ! [SV19: $i,SV23: $i,SV8: $i] :
      ( ( ( ~ ! [SY64: $i] :
                ( ~ ( in @ SY64 @ SV8 )
                | ( in @ SY64 @ SV23 ) )
          | ~ ! [SY65: $i] :
                ( ~ ( in @ SY65 @ SV19 )
                | ( in @ SY65 @ SV23 ) ) )
        = $false )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[138]) ).

thf(149,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
          | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
           != SV7 ) )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[139]) ).

thf(150,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
          | ( ( sK7_D @ SV20 @ SV16 @ SV7 )
           != SV16 ) )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[140]) ).

thf(151,plain,
    ! [SV17: $i,SV7: $i,SV21: $i,SV25: $i] :
      ( ( ( ~ ( in @ SV25 @ SV21 ) )
        = $true )
      | ( ( ( SV25 = SV7 )
          | ( SV25 = SV17 ) )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[142]) ).

thf(152,plain,
    ! [SV17: $i,SV21: $i,SV7: $i] :
      ( ( ( ~ ! [SY61: $i] :
                ( ( SY61 != SV7 )
                | ( in @ SY61 @ SV21 ) ) )
        = $false )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[143]) ).

thf(153,plain,
    ! [SV7: $i,SV21: $i,SV17: $i] :
      ( ( ( ~ ! [SY62: $i] :
                ( ( SY62 != SV17 )
                | ( in @ SY62 @ SV21 ) ) )
        = $false )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[143]) ).

thf(154,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
          | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 ) )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[144]) ).

thf(155,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
          | ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[145]) ).

thf(156,plain,
    ! [SV19: $i,SV8: $i,SV23: $i,SV26: $i] :
      ( ( ( ~ ( in @ SV26 @ SV23 ) )
        = $true )
      | ( ( ( in @ SV26 @ SV8 )
          | ( in @ SV26 @ SV19 ) )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[147]) ).

thf(157,plain,
    ! [SV19: $i,SV23: $i,SV8: $i] :
      ( ( ( ~ ! [SY64: $i] :
                ( ~ ( in @ SY64 @ SV8 )
                | ( in @ SY64 @ SV23 ) ) )
        = $false )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[148]) ).

thf(158,plain,
    ! [SV8: $i,SV23: $i,SV19: $i] :
      ( ( ( ~ ! [SY65: $i] :
                ( ~ ( in @ SY65 @ SV19 )
                | ( in @ SY65 @ SV23 ) ) )
        = $false )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[148]) ).

thf(159,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 ) )
        = $true )
      | ( ( ( ( sK7_D @ SV20 @ SV16 @ SV7 )
           != SV7 ) )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[149]) ).

thf(160,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ~ ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 ) )
        = $true )
      | ( ( ( ( sK7_D @ SV20 @ SV16 @ SV7 )
           != SV16 ) )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[150]) ).

thf(161,plain,
    ! [SV17: $i,SV7: $i,SV21: $i,SV25: $i] :
      ( ( ( in @ SV25 @ SV21 )
        = $false )
      | ( ( ( SV25 = SV7 )
          | ( SV25 = SV17 ) )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[151]) ).

thf(162,plain,
    ! [SV17: $i,SV21: $i,SV7: $i] :
      ( ( ( ! [SY61: $i] :
              ( ( SY61 != SV7 )
              | ( in @ SY61 @ SV21 ) ) )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[152]) ).

thf(163,plain,
    ! [SV7: $i,SV21: $i,SV17: $i] :
      ( ( ( ! [SY62: $i] :
              ( ( SY62 != SV17 )
              | ( in @ SY62 @ SV21 ) ) )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[153]) ).

thf(164,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 ) )
        = $true )
      | ( ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 ) )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[154]) ).

thf(165,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 ) )
        = $true )
      | ( ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[155]) ).

thf(166,plain,
    ! [SV19: $i,SV8: $i,SV23: $i,SV26: $i] :
      ( ( ( in @ SV26 @ SV23 )
        = $false )
      | ( ( ( in @ SV26 @ SV8 )
          | ( in @ SV26 @ SV19 ) )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[156]) ).

thf(167,plain,
    ! [SV19: $i,SV23: $i,SV8: $i] :
      ( ( ( ! [SY64: $i] :
              ( ~ ( in @ SY64 @ SV8 )
              | ( in @ SY64 @ SV23 ) ) )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[157]) ).

thf(168,plain,
    ! [SV8: $i,SV23: $i,SV19: $i] :
      ( ( ( ! [SY65: $i] :
              ( ~ ( in @ SY65 @ SV19 )
              | ( in @ SY65 @ SV23 ) ) )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[158]) ).

thf(169,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
        = $false )
      | ( ( ( ( sK7_D @ SV20 @ SV16 @ SV7 )
           != SV7 ) )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[159]) ).

thf(170,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
        = $false )
      | ( ( ( ( sK7_D @ SV20 @ SV16 @ SV7 )
           != SV16 ) )
        = $true )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[160]) ).

thf(171,plain,
    ! [SV21: $i,SV17: $i,SV7: $i,SV25: $i] :
      ( ( ( SV25 = SV7 )
        = $true )
      | ( ( SV25 = SV17 )
        = $true )
      | ( ( in @ SV25 @ SV21 )
        = $false )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[161]) ).

thf(172,plain,
    ! [SV17: $i,SV21: $i,SV7: $i,SV27: $i] :
      ( ( ( ( SV27 != SV7 )
          | ( in @ SV27 @ SV21 ) )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[162]) ).

thf(173,plain,
    ! [SV7: $i,SV21: $i,SV17: $i,SV28: $i] :
      ( ( ( ( SV28 != SV17 )
          | ( in @ SV28 @ SV21 ) )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[163]) ).

thf(174,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
        = $false )
      | ( ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 ) )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[164]) ).

thf(175,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
        = $false )
      | ( ( ~ ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 ) )
        = $true )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[165]) ).

thf(176,plain,
    ! [SV23: $i,SV19: $i,SV8: $i,SV26: $i] :
      ( ( ( in @ SV26 @ SV8 )
        = $true )
      | ( ( in @ SV26 @ SV19 )
        = $true )
      | ( ( in @ SV26 @ SV23 )
        = $false )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[166]) ).

thf(177,plain,
    ! [SV19: $i,SV23: $i,SV8: $i,SV29: $i] :
      ( ( ( ~ ( in @ SV29 @ SV8 )
          | ( in @ SV29 @ SV23 ) )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[167]) ).

thf(178,plain,
    ! [SV8: $i,SV23: $i,SV19: $i,SV30: $i] :
      ( ( ( ~ ( in @ SV30 @ SV19 )
          | ( in @ SV30 @ SV23 ) )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[168]) ).

thf(179,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ( sK7_D @ SV20 @ SV16 @ SV7 )
          = SV7 )
        = $false )
      | ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
        = $false )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[169]) ).

thf(180,plain,
    ! [SV7: $i,SV16: $i,SV20: $i] :
      ( ( ( ( sK7_D @ SV20 @ SV16 @ SV7 )
          = SV16 )
        = $false )
      | ( ( in @ ( sK7_D @ SV20 @ SV16 @ SV7 ) @ SV20 )
        = $false )
      | ( ( SV20
          = ( unordered_pair @ SV7 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[170]) ).

thf(181,plain,
    ! [SV17: $i,SV21: $i,SV7: $i,SV27: $i] :
      ( ( ( ( SV27 != SV7 ) )
        = $true )
      | ( ( in @ SV27 @ SV21 )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[172]) ).

thf(182,plain,
    ! [SV7: $i,SV21: $i,SV17: $i,SV28: $i] :
      ( ( ( ( SV28 != SV17 ) )
        = $true )
      | ( ( in @ SV28 @ SV21 )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[173]) ).

thf(183,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV8 )
        = $false )
      | ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
        = $false )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[174]) ).

thf(184,plain,
    ! [SV8: $i,SV18: $i,SV22: $i] :
      ( ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV18 )
        = $false )
      | ( ( in @ ( sK6_D @ SV22 @ SV18 @ SV8 ) @ SV22 )
        = $false )
      | ( ( SV22
          = ( set_union2 @ SV8 @ SV18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[175]) ).

thf(185,plain,
    ! [SV19: $i,SV23: $i,SV8: $i,SV29: $i] :
      ( ( ( ~ ( in @ SV29 @ SV8 ) )
        = $true )
      | ( ( in @ SV29 @ SV23 )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[177]) ).

thf(186,plain,
    ! [SV8: $i,SV23: $i,SV19: $i,SV30: $i] :
      ( ( ( ~ ( in @ SV30 @ SV19 ) )
        = $true )
      | ( ( in @ SV30 @ SV23 )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[178]) ).

thf(187,plain,
    ! [SV17: $i,SV21: $i,SV7: $i,SV27: $i] :
      ( ( ( SV27 = SV7 )
        = $false )
      | ( ( in @ SV27 @ SV21 )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[181]) ).

thf(188,plain,
    ! [SV7: $i,SV21: $i,SV17: $i,SV28: $i] :
      ( ( ( SV28 = SV17 )
        = $false )
      | ( ( in @ SV28 @ SV21 )
        = $true )
      | ( ( SV21
          = ( unordered_pair @ SV7 @ SV17 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[182]) ).

thf(189,plain,
    ! [SV19: $i,SV23: $i,SV8: $i,SV29: $i] :
      ( ( ( in @ SV29 @ SV8 )
        = $false )
      | ( ( in @ SV29 @ SV23 )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[185]) ).

thf(190,plain,
    ! [SV8: $i,SV23: $i,SV19: $i,SV30: $i] :
      ( ( ( in @ SV30 @ SV19 )
        = $false )
      | ( ( in @ SV30 @ SV23 )
        = $true )
      | ( ( SV23
          = ( set_union2 @ SV8 @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[186]) ).

thf(191,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[48,190,189,188,187,184,183,180,179,176,171,146,141,116,100,95,88,87,70,69,64,63,54,52]) ).

thf(192,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[191]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.12/0.13  % Problem  : SET909+1 : TPTP v8.1.0. Released v3.2.0.
% 0.12/0.14  % Command  : leo --timeout %d --proofoutput 1 --foatp e --atp e=./eprover %s
% 0.14/0.35  % Computer : n022.cluster.edu
% 0.14/0.35  % Model    : x86_64 x86_64
% 0.14/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.35  % Memory   : 8042.1875MB
% 0.14/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.35  % CPULimit : 300
% 0.14/0.35  % WCLimit  : 600
% 0.14/0.35  % DateTime : Sun Jul 10 16:38:55 EDT 2022
% 0.14/0.35  % CPUTime  : 
% 0.14/0.36  
% 0.14/0.36   No.of.Axioms: 12
% 0.14/0.36  
% 0.14/0.36   Length.of.Defs: 0
% 0.14/0.36  
% 0.14/0.36   Contains.Choice.Funs: false
% 0.14/0.37  (rf:0,axioms:12,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:600,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:14,loop_count:0,foatp_calls:0,translation:fof_full)..............
% 0.21/0.55  
% 0.21/0.55  ********************************
% 0.21/0.55  *   All subproblems solved!    *
% 0.21/0.55  ********************************
% 0.21/0.55  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:0,axioms:12,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:74,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:191,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.21/0.56  
% 0.21/0.56  %**** Beginning of derivation protocol ****
% 0.21/0.56  % SZS output start CNFRefutation
% See solution above
% 0.21/0.57  
% 0.21/0.57  %**** End of derivation protocol ****
% 0.21/0.57  %**** no. of clauses in derivation: 192 ****
% 0.21/0.57  %**** clause counter: 191 ****
% 0.21/0.57  
% 0.21/0.57  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:0,axioms:12,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:74,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:191,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------