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Leo-III---1.8.0.THM-Ref.s

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%------------------------------------------------------------------------------
% File     : Leo-III---1.8.0
% Problem  : SET888+1 : TPTP v9.3.1. Released v3.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39

% Computer : n019.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8046.5625MB
% OS       : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Sun Sep 27 08:31:16 AM UTC 2026

% Result   : Theorem 159.16s 44.52s
% Output   : Refutation 154.14s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   35
%            Number of leaves      :   22
% Syntax   : Number of formulae    :  375 ( 159 unt;   0 typ;   8 def)
%            Number of atoms       :  958 ( 485 equ;   0 cnn)
%            Maximal formula atoms :   26 (   2 avg)
%            Number of connectives : 3360 ( 581   ~; 331   |;  36   &;2354   @)
%                                         (   6 <=>;  52  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   24 (   6 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   19 (  16 usr;   6 con; 0-3 aty)
%            Number of variables   :  704 (  10   ^; 681   !;   5   ?; 704   :)
%                                         (   0  !>;   0  ?*;   0  @-;   8  @+)

% Comments : 
%------------------------------------------------------------------------------
thf(symmetric_difference_decl,type,
    symmetric_difference: $i > $i > $i ).

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

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

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

thf(set_union2_decl,type,
    set_union2: $i > $i > $i ).

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

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

thf(sk1_decl,type,
    sk1: $i ).

thf(sk2_decl,type,
    sk2: $i ).

thf(sk3_decl,type,
    sk3: $i > $i > $i ).

thf(sk4_decl,type,
    sk4: $i > $i > $i ).

thf(sk5_decl,type,
    sk5: $i > $i > $i > $o ).

thf(sk6_decl,type,
    sk6: $i > $i > $i > $i ).

thf(sk7_decl,type,
    sk7: $i > $i > $i > $i ).

thf(sk8_decl,type,
    sk8: $i ).

thf(sk9_decl,type,
    sk9: $i ).

thf(sk1_def,definition,
    ( sk1
    = ( @+[A: $i] :
          ~ ! [B: $i] :
              ( ( A != B )
             => ( ( B @ singleton @ ( A @ singleton @ symmetric_difference ) )
                = ( B @ ( A @ unordered_pair ) ) ) ) ) ) ).

thf(sk2_def,definition,
    ( sk2
    = ( @+[A: $i] :
          ~ ( ( sk1 != A )
           => ( ( A @ singleton @ ( sk1 @ singleton @ symmetric_difference ) )
              = ( A @ ( sk1 @ unordered_pair ) ) ) ) ) ) ).

thf(sk3_def,definition,
    ( sk3
    = ( ^ [A: $i,B: $i] :
        @+[C: $i] :
          ~ ( ( A @ ( C @ in ) )
           => ( C = B ) ) ) ) ).

thf(sk4_def,definition,
    ( sk4
    = ( ^ [A: $i,B: $i] :
        @+[C: $i] :
          ~ ( ( C = B )
           => ( A @ ( C @ in ) ) ) ) ) ).

thf(sk6_def,definition,
    ( sk6
    = ( ^ [A: $i,B: $i,C: $i] :
        @+[D: $i] :
          ~ ( ( A @ ( D @ in ) )
           => ( ( D = B )
              | ( D = C ) ) ) ) ) ).

thf(sk7_def,definition,
    ( sk7
    = ( ^ [A: $i,B: $i,C: $i] :
        @+[D: $i] :
          ~ ( ( ( D = B )
              | ( D = C ) )
           => ( A @ ( D @ in ) ) ) ) ) ).

thf(sk8_def,definition,
    ( sk8
    = ( @+[A: $i] : ( A @ empty ) ) ) ).

thf(sk9_def,definition,
    ( sk9
    = ( @+[A: $i] :
          ~ ( A @ empty ) ) ) ).

thf(8,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C
        = ( B @ ( A @ unordered_pair ) ) )
    <=> ! [D: $i] :
          ( ( C @ ( D @ in ) )
        <=> ( ( D = B )
            | ( D = A ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d2_tarski) ).

thf(54,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ! [D: $i] :
            ( ( ( ( D = B )
                | ( D = A ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ( ( D = B )
                | ( D = A ) ) ) )
       => ( C
          = ( B @ ( A @ unordered_pair ) ) ) )
      & ( ( C
          = ( B @ ( A @ unordered_pair ) ) )
       => ! [D: $i] :
            ( ( ( ( D = B )
                | ( D = A ) )
             => ( C @ ( D @ in ) ) )
            & ( ( C @ ( D @ in ) )
             => ( ( D = B )
                | ( D = A ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[8]) ).

thf(55,plain,
    ( ! [A: $i,B: $i,C: $i] :
        ( ( ! [D: $i] :
              ( ( ( D = B )
                | ( D = A ) )
             => ( C @ ( D @ in ) ) )
          & ! [D: $i] :
              ( ( C @ ( D @ in ) )
             => ( ( D = B )
                | ( D = A ) ) ) )
       => ( C
          = ( B @ ( A @ unordered_pair ) ) ) )
    & ! [A: $i,B: $i,C: $i] :
        ( ( C
          = ( B @ ( A @ unordered_pair ) ) )
       => ( ! [D: $i] :
              ( ( ( D = B )
                | ( D = A ) )
             => ( C @ ( D @ in ) ) )
          & ! [D: $i] :
              ( ( C @ ( D @ in ) )
             => ( ( D = B )
                | ( D = A ) ) ) ) ) ),
    inference(miniscope,[status(thm)],[54]) ).

thf(56,plain,
    ! [H: $i,G: $i,F: $i,E: $i,D: $i,C: $i,B: $i,A: $i] :
      ( ( ( H
          = ( G @ ( F @ unordered_pair ) ) )
        | ~ ( H @ ( F @ ( G @ ( H @ sk7 ) ) @ in ) )
        | ( H @ ( G @ ( F @ sk5 ) ) ) )
      & ( ( H
          = ( G @ ( F @ unordered_pair ) ) )
        | ( ( F @ ( G @ ( H @ sk7 ) ) )
          = G )
        | ( ( F @ ( G @ ( H @ sk7 ) ) )
          = F )
        | ( H @ ( G @ ( F @ sk5 ) ) ) )
      & ( ( H
          = ( G @ ( F @ unordered_pair ) ) )
        | ~ ( H @ ( G @ ( F @ sk5 ) ) )
        | ( ( F @ ( G @ ( H @ sk6 ) ) )
         != G ) )
      & ( ( H
          = ( G @ ( F @ unordered_pair ) ) )
        | ~ ( H @ ( G @ ( F @ sk5 ) ) )
        | ( ( F @ ( G @ ( H @ sk6 ) ) )
         != F ) )
      & ( ( H
          = ( G @ ( F @ unordered_pair ) ) )
        | ~ ( H @ ( G @ ( F @ sk5 ) ) )
        | ( H @ ( F @ ( G @ ( H @ sk6 ) ) @ in ) ) )
      & ( ( C @ ( E @ in ) )
        | ( E != B )
        | ( C
         != ( B @ ( A @ unordered_pair ) ) ) )
      & ( ( C @ ( E @ in ) )
        | ( E != A )
        | ( C
         != ( B @ ( A @ unordered_pair ) ) ) )
      & ( ( D = B )
        | ( D = A )
        | ~ ( C @ ( D @ in ) )
        | ( C
         != ( B @ ( A @ unordered_pair ) ) ) ) ),
    inference(cnf,[status(esa)],[55]) ).

thf(60,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( C @ ( D @ in ) )
      | ( D != B )
      | ( C
       != ( B @ ( A @ unordered_pair ) ) ) ),
    inference(cnfConj,[status(thm)],[56]) ).

thf(69,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( C @ ( D @ in ) )
      | ( D != B )
      | ( C
       != ( B @ ( A @ unordered_pair ) ) ) ),
    inference(lifteq,[status(thm)],[60]) ).

thf(70,plain,
    ! [B: $i,A: $i] : ( B @ ( A @ unordered_pair ) @ ( B @ in ) ),
    inference(simp,[status(thm)],[69]) ).

thf(7,axiom,
    ! [A: $i,B: $i] :
      ( ( B
        = ( A @ singleton ) )
    <=> ! [C: $i] :
          ( ( B @ ( C @ in ) )
        <=> ( C = A ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d1_tarski) ).

thf(33,plain,
    ! [A: $i,B: $i] :
      ( ( ! [C: $i] :
            ( ( ( C = A )
             => ( B @ ( C @ in ) ) )
            & ( ( B @ ( C @ in ) )
             => ( C = A ) ) )
       => ( B
          = ( A @ singleton ) ) )
      & ( ( B
          = ( A @ singleton ) )
       => ! [C: $i] :
            ( ( ( C = A )
             => ( B @ ( C @ in ) ) )
            & ( ( B @ ( C @ in ) )
             => ( C = A ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).

thf(34,plain,
    ( ! [A: $i,B: $i] :
        ( ( ! [C: $i] :
              ( ( C = A )
             => ( B @ ( C @ in ) ) )
          & ! [C: $i] :
              ( ( B @ ( C @ in ) )
             => ( C = A ) ) )
       => ( B
          = ( A @ singleton ) ) )
    & ! [A: $i,B: $i] :
        ( ( B
          = ( A @ singleton ) )
       => ( ! [C: $i] :
              ( ( C = A )
             => ( B @ ( C @ in ) ) )
          & ! [C: $i] :
              ( ( B @ ( C @ in ) )
             => ( C = A ) ) ) ) ),
    inference(miniscope,[status(thm)],[33]) ).

thf(35,plain,
    ! [F: $i,E: $i,D: $i,C: $i,B: $i,A: $i] :
      ( ( ( F
          = ( E @ singleton ) )
        | ~ ( F @ ( E @ ( F @ sk4 ) @ in ) )
        | ( ( E @ ( F @ sk3 ) )
         != E ) )
      & ( ( F
          = ( E @ singleton ) )
        | ( ( E @ ( F @ sk4 ) )
          = E )
        | ( ( E @ ( F @ sk3 ) )
         != E ) )
      & ( ( F
          = ( E @ singleton ) )
        | ~ ( F @ ( E @ ( F @ sk4 ) @ in ) )
        | ( F @ ( E @ ( F @ sk3 ) @ in ) ) )
      & ( ( F
          = ( E @ singleton ) )
        | ( ( E @ ( F @ sk4 ) )
          = E )
        | ( F @ ( E @ ( F @ sk3 ) @ in ) ) )
      & ( ( B @ ( D @ in ) )
        | ( D != A )
        | ( B
         != ( A @ singleton ) ) )
      & ( ( C = A )
        | ~ ( B @ ( C @ in ) )
        | ( B
         != ( A @ singleton ) ) ) ),
    inference(cnf,[status(esa)],[34]) ).

thf(38,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C = A )
      | ~ ( B @ ( C @ in ) )
      | ( B
       != ( A @ singleton ) ) ),
    inference(cnfConj,[status(thm)],[35]) ).

thf(44,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( B @ ( C @ in ) )
      | ( C = A )
      | ( B
       != ( A @ singleton ) ) ),
    inference(lifteq,[status(thm)],[38]) ).

thf(45,plain,
    ! [B: $i,A: $i] :
      ( ~ ( A @ singleton @ ( B @ in ) )
      | ( B = A ) ),
    inference(simp,[status(thm)],[44]) ).

thf(37,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( C @ in ) )
      | ( C != A )
      | ( B
       != ( A @ singleton ) ) ),
    inference(cnfConj,[status(thm)],[35]) ).

thf(42,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( C @ in ) )
      | ( C != A )
      | ( B
       != ( A @ singleton ) ) ),
    inference(lifteq,[status(thm)],[37]) ).

thf(43,plain,
    ! [A: $i] : ( A @ singleton @ ( A @ in ) ),
    inference(simp,[status(thm)],[42]) ).

thf(1,conjecture,
    ! [A: $i,B: $i] :
      ( ( A != B )
     => ( ( B @ singleton @ ( A @ singleton @ symmetric_difference ) )
        = ( B @ ( A @ unordered_pair ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t29_zfmisc_1) ).

thf(2,negated_conjecture,
    ~ ! [A: $i,B: $i] :
        ( ( A != B )
       => ( ( B @ singleton @ ( A @ singleton @ symmetric_difference ) )
          = ( B @ ( A @ unordered_pair ) ) ) ),
    inference(neg_conjecture,[status(cth)],[1]) ).

thf(16,plain,
    ~ ! [A: $i,B: $i] :
        ( ( A != B )
       => ( ( B @ singleton @ ( A @ singleton @ symmetric_difference ) )
          = ( B @ ( A @ unordered_pair ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).

thf(17,plain,
    ( ( ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) )
     != ( sk2 @ ( sk1 @ unordered_pair ) ) )
    & ( sk1 != sk2 ) ),
    inference(cnf,[status(esa)],[16]) ).

thf(18,plain,
    sk1 != sk2,
    inference(cnfConj,[status(thm)],[17]) ).

thf(20,plain,
    sk2 != sk1,
    inference(lifteq,[status(thm)],[18]) ).

thf(389,plain,
    ! [B: $i,A: $i] :
      ( ( B != sk2 )
      | ( A != sk1 )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,20]) ).

thf(390,plain,
    ! [A: $i] :
      ( ( A != sk1 )
      | ~ ( A @ singleton @ ( sk2 @ in ) ) ),
    inference(pattern_uni,[status(thm)],[389:[bind(A,$thf( A )),bind(B,$thf( sk2 ))]]) ).

thf(532,plain,
    ~ ( sk1 @ singleton @ ( sk2 @ in ) ),
    inference(simp,[status(thm)],[390]) ).

thf(618,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( sk1 @ singleton @ ( sk2 @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,532]) ).

thf(619,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( sk1 @ singleton @ ( sk2 @ in ) ) ),
    inference(simp,[status(thm)],[618]) ).

thf(620,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != ( sk1 @ singleton ) )
      | ( A != sk2 ) ),
    inference(simp,[status(thm)],[619]) ).

thf(626,plain,
    ( ( sk2 @ singleton )
   != ( sk1 @ singleton ) ),
    inference(simp,[status(thm)],[620]) ).

thf(711,plain,
    ! [B: $i,A: $i] :
      ( ( B
       != ( sk2 @ singleton ) )
      | ( A
       != ( sk1 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,626]) ).

thf(712,plain,
    ! [A: $i] :
      ( ( A
       != ( sk1 @ singleton ) )
      | ~ ( A @ singleton @ ( sk2 @ singleton @ in ) ) ),
    inference(pattern_uni,[status(thm)],[711:[bind(A,$thf( A )),bind(B,$thf( sk2 @ singleton ))]]) ).

thf(719,plain,
    ~ ( sk1 @ singleton @ singleton @ ( sk2 @ singleton @ in ) ),
    inference(simp,[status(thm)],[712]) ).

thf(998,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( sk1 @ singleton @ singleton @ ( sk2 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,719]) ).

thf(999,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
     != ( sk1 @ singleton @ singleton @ ( sk2 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[998]) ).

thf(1026,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk1 @ singleton @ singleton ) )
      | ( B
       != ( sk2 @ singleton ) ) ),
    inference(simp,[status(thm)],[999]) ).

thf(1030,plain,
    ! [A: $i] :
      ( ( sk2 @ singleton @ ( A @ unordered_pair ) )
     != ( sk1 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1026]) ).

thf(13,axiom,
    ? [A: $i] : ( A @ empty ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',rc1_xboole_0) ).

thf(93,plain,
    ? [A: $i] : ( A @ empty ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[13]) ).

thf(94,plain,
    sk8 @ empty,
    inference(cnf,[status(esa)],[93]) ).

thf(14,axiom,
    ? [A: $i] :
      ~ ( A @ empty ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',rc2_xboole_0) ).

thf(95,plain,
    ? [A: $i] :
      ~ ( A @ empty ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[14]) ).

thf(96,plain,
    ~ ! [A: $i] : ( A @ empty ),
    inference(miniscope,[status(thm)],[95]) ).

thf(97,plain,
    ~ ( sk9 @ empty ),
    inference(cnf,[status(esa)],[96]) ).

thf(109,plain,
    ( ( ( sk9 @ empty )
     != ( sk8 @ empty ) )
    | ~ $true ),
    inference(paramod_ordered,[status(thm)],[94,97]) ).

thf(110,plain,
    ( ( sk9 @ empty )
   != ( sk8 @ empty ) ),
    inference(simp,[status(thm)],[109]) ).

thf(111,plain,
    sk9 != sk8,
    inference(simp,[status(thm)],[110]) ).

thf(508,plain,
    ! [B: $i,A: $i] :
      ( ( B != sk9 )
      | ( A != sk8 )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,111]) ).

thf(509,plain,
    ! [A: $i] :
      ( ( A != sk8 )
      | ~ ( A @ singleton @ ( sk9 @ in ) ) ),
    inference(pattern_uni,[status(thm)],[508:[bind(A,$thf( A )),bind(B,$thf( sk9 ))]]) ).

thf(599,plain,
    ~ ( sk8 @ singleton @ ( sk9 @ in ) ),
    inference(simp,[status(thm)],[509]) ).

thf(672,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( sk8 @ singleton @ ( sk9 @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,599]) ).

thf(673,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( sk8 @ singleton @ ( sk9 @ in ) ) ),
    inference(simp,[status(thm)],[672]) ).

thf(675,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != ( sk8 @ singleton ) )
      | ( A != sk9 ) ),
    inference(simp,[status(thm)],[673]) ).

thf(678,plain,
    ( ( sk9 @ singleton )
   != ( sk8 @ singleton ) ),
    inference(simp,[status(thm)],[675]) ).

thf(976,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk9 @ singleton ) )
      | ( B
       != ( sk8 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,678]) ).

thf(977,plain,
    ! [A: $i] :
      ( ( A
       != ( sk8 @ singleton ) )
      | ~ ( sk9 @ singleton @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[976:[bind(A,$thf( sk9 @ singleton )),bind(B,$thf( B ))]]) ).

thf(980,plain,
    ~ ( sk9 @ singleton @ singleton @ ( sk8 @ singleton @ in ) ),
    inference(simp,[status(thm)],[977]) ).

thf(1130,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( sk9 @ singleton @ singleton @ ( sk8 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,980]) ).

thf(1131,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( sk9 @ singleton @ singleton @ ( sk8 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1130]) ).

thf(1132,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != ( sk9 @ singleton @ singleton ) )
      | ( A
       != ( sk8 @ singleton ) ) ),
    inference(simp,[status(thm)],[1131]) ).

thf(1139,plain,
    ( ( sk9 @ singleton @ singleton )
   != ( sk8 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1132]) ).

thf(1316,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk9 @ singleton @ singleton ) )
      | ( B
       != ( sk8 @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,1139]) ).

thf(1317,plain,
    ! [A: $i] :
      ( ( A
       != ( sk8 @ singleton @ singleton ) )
      | ~ ( sk9 @ singleton @ singleton @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1316:[bind(A,$thf( sk9 @ singleton @ singleton )),bind(B,$thf( B ))]]) ).

thf(1322,plain,
    ~ ( sk9 @ singleton @ singleton @ singleton @ ( sk8 @ singleton @ singleton @ in ) ),
    inference(simp,[status(thm)],[1317]) ).

thf(602,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( sk1 @ singleton @ ( sk2 @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,532]) ).

thf(603,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
     != ( sk1 @ singleton @ ( sk2 @ in ) ) ),
    inference(simp,[status(thm)],[602]) ).

thf(622,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk1 @ singleton ) )
      | ( B != sk2 ) ),
    inference(simp,[status(thm)],[603]) ).

thf(628,plain,
    ! [A: $i] :
      ( ( sk2 @ ( A @ unordered_pair ) )
     != ( sk1 @ singleton ) ),
    inference(simp,[status(thm)],[622]) ).

thf(1022,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( sk1 @ singleton @ singleton @ ( sk2 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,719]) ).

thf(1023,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( sk1 @ singleton @ singleton @ ( sk2 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1022]) ).

thf(1025,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != ( sk1 @ singleton @ singleton ) )
      | ( A
       != ( sk2 @ singleton ) ) ),
    inference(simp,[status(thm)],[1023]) ).

thf(1029,plain,
    ( ( sk2 @ singleton @ singleton )
   != ( sk1 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1025]) ).

thf(1282,plain,
    ! [B: $i,A: $i] :
      ( ( B
       != ( sk2 @ singleton @ singleton ) )
      | ( A
       != ( sk1 @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,1029]) ).

thf(1283,plain,
    ! [A: $i] :
      ( ( A
       != ( sk1 @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( sk2 @ singleton @ singleton @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1282:[bind(A,$thf( A )),bind(B,$thf( sk2 @ singleton @ singleton ))]]) ).

thf(1295,plain,
    ~ ( sk1 @ singleton @ singleton @ singleton @ ( sk2 @ singleton @ singleton @ in ) ),
    inference(simp,[status(thm)],[1283]) ).

thf(753,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A
       != ( sk2 @ ( C @ unordered_pair ) ) )
      | ( B
       != ( sk1 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,628]) ).

thf(754,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk1 @ singleton ) )
      | ~ ( sk2 @ ( B @ unordered_pair ) @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[753:[bind(A,$thf( sk2 @ ( D @ unordered_pair ) )),bind(B,$thf( B )),bind(C,$thf( D ))]]) ).

thf(762,plain,
    ! [A: $i] :
      ~ ( sk2 @ ( A @ unordered_pair ) @ singleton @ ( sk1 @ singleton @ in ) ),
    inference(simp,[status(thm)],[754]) ).

thf(64,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( C @ ( D @ in ) )
      | ( D != A )
      | ( C
       != ( B @ ( A @ unordered_pair ) ) ) ),
    inference(cnfConj,[status(thm)],[56]) ).

thf(71,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( C @ ( D @ in ) )
      | ( D != A )
      | ( C
       != ( B @ ( A @ unordered_pair ) ) ) ),
    inference(lifteq,[status(thm)],[64]) ).

thf(72,plain,
    ! [B: $i,A: $i] : ( B @ ( A @ unordered_pair ) @ ( A @ in ) ),
    inference(simp,[status(thm)],[71]) ).

thf(1128,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( sk9 @ singleton @ singleton @ ( sk8 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[72,980]) ).

thf(1129,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
     != ( sk9 @ singleton @ singleton @ ( sk8 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1128]) ).

thf(1134,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk9 @ singleton @ singleton ) )
      | ( A
       != ( sk8 @ singleton ) ) ),
    inference(simp,[status(thm)],[1129]) ).

thf(1142,plain,
    ! [A: $i] :
      ( ( A @ ( sk8 @ singleton @ unordered_pair ) )
     != ( sk9 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1134]) ).

thf(656,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( sk8 @ singleton @ ( sk9 @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,599]) ).

thf(657,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
     != ( sk8 @ singleton @ ( sk9 @ in ) ) ),
    inference(simp,[status(thm)],[656]) ).

thf(674,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk8 @ singleton ) )
      | ( B != sk9 ) ),
    inference(simp,[status(thm)],[657]) ).

thf(677,plain,
    ! [A: $i] :
      ( ( sk9 @ ( A @ unordered_pair ) )
     != ( sk8 @ singleton ) ),
    inference(simp,[status(thm)],[674]) ).

thf(3,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ~ ( A @ ( B @ in ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',antisymmetry_r2_hidden) ).

thf(22,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ in ) )
     => ~ ( A @ ( B @ in ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).

thf(23,plain,
    ! [B: $i,A: $i] :
      ( ~ ( A @ ( B @ in ) )
      | ~ ( B @ ( A @ in ) ) ),
    inference(cnf,[status(esa)],[22]) ).

thf(186,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( D @ ( C @ in ) ) )
      | ~ ( C @ ( D @ in ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,23]) ).

thf(187,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( D @ ( C @ in ) ) )
      | ~ ( C @ ( D @ in ) ) ),
    inference(simp,[status(thm)],[186]) ).

thf(188,plain,
    ! [B: $i,A: $i] :
      ~ ( B @ ( B @ ( A @ unordered_pair ) @ in ) ),
    inference(pattern_uni,[status(thm)],[187:[bind(A,$thf( E )),bind(B,$thf( F )),bind(C,$thf( F )),bind(D,$thf( F @ ( E @ unordered_pair ) ))]]) ).

thf(202,plain,
    ! [B: $i,A: $i] :
      ~ ( B @ ( B @ ( A @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[188]) ).

thf(1382,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( sk1 @ singleton @ singleton @ singleton @ ( sk2 @ singleton @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,1295]) ).

thf(1383,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( sk1 @ singleton @ singleton @ singleton @ ( sk2 @ singleton @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1382]) ).

thf(1385,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != ( sk1 @ singleton @ singleton @ singleton ) )
      | ( A
       != ( sk2 @ singleton @ singleton ) ) ),
    inference(simp,[status(thm)],[1383]) ).

thf(1398,plain,
    ( ( sk2 @ singleton @ singleton @ singleton )
   != ( sk1 @ singleton @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1385]) ).

thf(1769,plain,
    ! [B: $i,A: $i] :
      ( ( B
       != ( sk2 @ singleton @ singleton @ singleton ) )
      | ( A
       != ( sk1 @ singleton @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,1398]) ).

thf(1770,plain,
    ! [A: $i] :
      ( ( A
       != ( sk1 @ singleton @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( sk2 @ singleton @ singleton @ singleton @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1769:[bind(A,$thf( A )),bind(B,$thf( sk2 @ singleton @ singleton @ singleton ))]]) ).

thf(1788,plain,
    ~ ( sk1 @ singleton @ singleton @ singleton @ singleton @ ( sk2 @ singleton @ singleton @ singleton @ in ) ),
    inference(simp,[status(thm)],[1770]) ).

thf(1310,plain,
    ! [B: $i,A: $i] :
      ( ( B
       != ( sk9 @ singleton @ singleton ) )
      | ( A
       != ( sk8 @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,1139]) ).

thf(1311,plain,
    ! [A: $i] :
      ( ( A
       != ( sk8 @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( sk9 @ singleton @ singleton @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1310:[bind(A,$thf( A )),bind(B,$thf( sk9 @ singleton @ singleton ))]]) ).

thf(1327,plain,
    ~ ( sk8 @ singleton @ singleton @ singleton @ ( sk9 @ singleton @ singleton @ in ) ),
    inference(simp,[status(thm)],[1311]) ).

thf(1631,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( sk9 @ singleton @ singleton @ singleton @ ( sk8 @ singleton @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,1322]) ).

thf(1632,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( sk9 @ singleton @ singleton @ singleton @ ( sk8 @ singleton @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1631]) ).

thf(1634,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != ( sk9 @ singleton @ singleton @ singleton ) )
      | ( A
       != ( sk8 @ singleton @ singleton ) ) ),
    inference(simp,[status(thm)],[1632]) ).

thf(1644,plain,
    ( ( sk9 @ singleton @ singleton @ singleton )
   != ( sk8 @ singleton @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1634]) ).

thf(1953,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk9 @ singleton @ singleton @ singleton ) )
      | ( B
       != ( sk8 @ singleton @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,1644]) ).

thf(1954,plain,
    ! [A: $i] :
      ( ( A
       != ( sk8 @ singleton @ singleton @ singleton ) )
      | ~ ( sk9 @ singleton @ singleton @ singleton @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1953:[bind(A,$thf( sk9 @ singleton @ singleton @ singleton )),bind(B,$thf( B ))]]) ).

thf(1961,plain,
    ~ ( sk9 @ singleton @ singleton @ singleton @ singleton @ ( sk8 @ singleton @ singleton @ singleton @ in ) ),
    inference(simp,[status(thm)],[1954]) ).

thf(3769,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( sk9 @ singleton @ singleton @ singleton @ singleton @ ( sk8 @ singleton @ singleton @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,1961]) ).

thf(3770,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( sk9 @ singleton @ singleton @ singleton @ singleton @ ( sk8 @ singleton @ singleton @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[3769]) ).

thf(3815,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != ( sk9 @ singleton @ singleton @ singleton @ singleton ) )
      | ( A
       != ( sk8 @ singleton @ singleton @ singleton ) ) ),
    inference(simp,[status(thm)],[3770]) ).

thf(3826,plain,
    ( ( sk9 @ singleton @ singleton @ singleton @ singleton )
   != ( sk8 @ singleton @ singleton @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[3815]) ).

thf(616,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( sk1 @ singleton @ ( sk2 @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[72,532]) ).

thf(617,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
     != ( sk1 @ singleton @ ( sk2 @ in ) ) ),
    inference(simp,[status(thm)],[616]) ).

thf(621,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk1 @ singleton ) )
      | ( A != sk2 ) ),
    inference(simp,[status(thm)],[617]) ).

thf(627,plain,
    ! [A: $i] :
      ( ( A @ ( sk2 @ unordered_pair ) )
     != ( sk1 @ singleton ) ),
    inference(simp,[status(thm)],[621]) ).

thf(732,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B
       != ( C @ ( sk2 @ unordered_pair ) ) )
      | ( A
       != ( sk1 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,627]) ).

thf(733,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk1 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ ( sk2 @ unordered_pair ) @ in ) ) ),
    inference(pattern_uni,[status(thm)],[732:[bind(A,$thf( A )),bind(B,$thf( E @ ( sk2 @ unordered_pair ) )),bind(C,$thf( E ))]]) ).

thf(747,plain,
    ! [A: $i] :
      ~ ( sk1 @ singleton @ singleton @ ( A @ ( sk2 @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[733]) ).

thf(510,plain,
    ! [B: $i,A: $i] :
      ( ( A != sk9 )
      | ( B != sk8 )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,111]) ).

thf(511,plain,
    ! [A: $i] :
      ( ( A != sk8 )
      | ~ ( sk9 @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[510:[bind(A,$thf( sk9 ))]]) ).

thf(601,plain,
    ~ ( sk9 @ singleton @ ( sk8 @ in ) ),
    inference(simp,[status(thm)],[511]) ).

thf(683,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( sk9 @ singleton @ ( sk8 @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,601]) ).

thf(684,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
     != ( sk9 @ singleton @ ( sk8 @ in ) ) ),
    inference(simp,[status(thm)],[683]) ).

thf(703,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk9 @ singleton ) )
      | ( B != sk8 ) ),
    inference(simp,[status(thm)],[684]) ).

thf(709,plain,
    ! [A: $i] :
      ( ( sk8 @ ( A @ unordered_pair ) )
     != ( sk9 @ singleton ) ),
    inference(simp,[status(thm)],[703]) ).

thf(4,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ unordered_pair ) )
      = ( A @ ( B @ unordered_pair ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_k2_tarski) ).

thf(24,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ unordered_pair ) )
      = ( A @ ( B @ unordered_pair ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).

thf(972,plain,
    ! [B: $i,A: $i] :
      ( ( B
       != ( sk9 @ singleton ) )
      | ( A
       != ( sk8 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,678]) ).

thf(973,plain,
    ! [A: $i] :
      ( ( A
       != ( sk8 @ singleton ) )
      | ~ ( A @ singleton @ ( sk9 @ singleton @ in ) ) ),
    inference(pattern_uni,[status(thm)],[972:[bind(A,$thf( A )),bind(B,$thf( sk9 @ singleton ))]]) ).

thf(983,plain,
    ~ ( sk8 @ singleton @ singleton @ ( sk9 @ singleton @ in ) ),
    inference(simp,[status(thm)],[973]) ).

thf(1160,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( sk8 @ singleton @ singleton @ ( sk9 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,983]) ).

thf(1161,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
     != ( sk8 @ singleton @ singleton @ ( sk9 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1160]) ).

thf(1187,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk8 @ singleton @ singleton ) )
      | ( B
       != ( sk9 @ singleton ) ) ),
    inference(simp,[status(thm)],[1161]) ).

thf(1191,plain,
    ! [A: $i] :
      ( ( sk9 @ singleton @ ( A @ unordered_pair ) )
     != ( sk8 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1187]) ).

thf(115,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( C @ ( B @ in ) ) )
      | ~ ( B @ ( C @ in ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,23]) ).

thf(116,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( C @ ( B @ in ) ) )
      | ~ ( B @ ( C @ in ) ) ),
    inference(simp,[status(thm)],[115]) ).

thf(117,plain,
    ! [A: $i] :
      ~ ( A @ ( A @ singleton @ in ) ),
    inference(pattern_uni,[status(thm)],[116:[bind(A,$thf( D )),bind(B,$thf( D )),bind(C,$thf( D @ singleton ))]]) ).

thf(121,plain,
    ! [A: $i] :
      ~ ( A @ ( A @ singleton @ in ) ),
    inference(simp,[status(thm)],[117]) ).

thf(165,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( C @ ( C @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,121]) ).

thf(166,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
     != ( C @ ( C @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[165]) ).

thf(192,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != C )
      | ( B
       != ( C @ singleton ) ) ),
    inference(simp,[status(thm)],[166]) ).

thf(196,plain,
    ! [B: $i,A: $i] :
      ( ( B @ singleton @ ( A @ unordered_pair ) )
     != B ),
    inference(simp,[status(thm)],[192]) ).

thf(58,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ( ( A @ ( B @ ( C @ sk7 ) ) )
        = B )
      | ( ( A @ ( B @ ( C @ sk7 ) ) )
        = A )
      | ( C @ ( B @ ( A @ sk5 ) ) ) ),
    inference(cnfConj,[status(thm)],[56]) ).

thf(77,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ( ( A @ ( B @ ( C @ sk7 ) ) )
        = B )
      | ( ( A @ ( B @ ( C @ sk7 ) ) )
        = A ) ),
    inference(lifteq,[status(thm)],[58]) ).

thf(78,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ( ( A @ ( B @ ( C @ sk7 ) ) )
        = B )
      | ( ( A @ ( B @ ( C @ sk7 ) ) )
        = A ) ),
    inference(simp,[status(thm)],[77]) ).

thf(254,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( C @ ( D @ in ) ) )
      | ~ $true
      | ~ ( D @ ( C @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[72,23]) ).

thf(255,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( C @ ( D @ in ) ) )
      | ~ ( D @ ( C @ in ) ) ),
    inference(simp,[status(thm)],[254]) ).

thf(256,plain,
    ! [B: $i,A: $i] :
      ~ ( A @ ( B @ ( A @ unordered_pair ) @ in ) ),
    inference(pattern_uni,[status(thm)],[255:[bind(A,$thf( E )),bind(B,$thf( F )),bind(C,$thf( F @ ( E @ unordered_pair ) )),bind(D,$thf( E ))]]) ).

thf(261,plain,
    ! [B: $i,A: $i] :
      ~ ( A @ ( B @ ( A @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[256]) ).

thf(5,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ set_union2 ) )
      = ( A @ ( B @ set_union2 ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_k2_xboole_0) ).

thf(27,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ set_union2 ) )
      = ( A @ ( B @ set_union2 ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).

thf(28,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ set_union2 ) )
      = ( A @ ( B @ set_union2 ) ) ),
    inference(cnf,[status(esa)],[27]) ).

thf(29,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ set_union2 ) )
      = ( A @ ( B @ set_union2 ) ) ),
    inference(lifteq,[status(thm)],[28]) ).

thf(10,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( A @ empty )
     => ~ ( B @ ( A @ set_union2 ) @ empty ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc2_xboole_0) ).

thf(84,plain,
    ! [A: $i,B: $i] :
      ( ~ ( A @ empty )
     => ~ ( B @ ( A @ set_union2 ) @ empty ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[10]) ).

thf(129,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( B @ ( B @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,121]) ).

thf(130,plain,
    ! [B: $i,A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( B @ ( B @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[129]) ).

thf(131,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ singleton )
       != B )
      | ( A
       != ( B @ singleton ) ) ),
    inference(simp,[status(thm)],[130]) ).

thf(132,plain,
    ! [A: $i] :
      ( ( A @ singleton @ singleton )
     != A ),
    inference(simp,[status(thm)],[131]) ).

thf(59,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ~ ( C @ ( B @ ( A @ sk5 ) ) )
      | ( ( A @ ( B @ ( C @ sk6 ) ) )
       != B ) ),
    inference(cnfConj,[status(thm)],[56]) ).

thf(73,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ( ( A @ ( B @ ( C @ sk6 ) ) )
       != B ) ),
    inference(lifteq,[status(thm)],[59]) ).

thf(74,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ( ( A @ ( B @ ( C @ sk6 ) ) )
       != B ) ),
    inference(simp,[status(thm)],[73]) ).

thf(25,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) )
      = ( A @ ( B @ unordered_pair ) ) ),
    inference(cnf,[status(esa)],[24]) ).

thf(26,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) )
      = ( A @ ( B @ unordered_pair ) ) ),
    inference(lifteq,[status(thm)],[25]) ).

thf(112,plain,
    ! [B: $i,A: $i] :
      ( ~ $true
      | ( ( A @ ( B @ in ) )
       != ( B @ ( A @ in ) ) )
      | ~ ( B @ ( A @ in ) ) ),
    inference(eqfactor_ordered,[status(thm)],[23]) ).

thf(113,plain,
    ! [A: $i] :
      ~ ( A @ ( A @ in ) ),
    inference(pattern_uni,[status(thm)],[112:[bind(A,$thf( B ))]]) ).

thf(114,plain,
    ! [A: $i] :
      ~ ( A @ ( A @ in ) ),
    inference(simp,[status(thm)],[113]) ).

thf(184,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( C @ ( C @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,114]) ).

thf(185,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
     != ( C @ ( C @ in ) ) ),
    inference(simp,[status(thm)],[184]) ).

thf(193,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != C )
      | ( B != C ) ),
    inference(simp,[status(thm)],[185]) ).

thf(197,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) )
     != B ),
    inference(simp,[status(thm)],[193]) ).

thf(205,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( D @ ( C @ unordered_pair ) ) )
      | ( ( A @ ( B @ unordered_pair ) )
       != D ) ),
    inference(paramod_ordered,[status(thm)],[26,197]) ).

thf(206,plain,
    ! [B: $i,A: $i] :
      ( ( A @ ( B @ unordered_pair ) )
     != B ),
    inference(pattern_uni,[status(thm)],[205:[bind(A,$thf( A )),bind(B,$thf( B )),bind(C,$thf( A )),bind(D,$thf( B ))]]) ).

thf(391,plain,
    ! [B: $i,A: $i] :
      ( ( A != sk2 )
      | ( B != sk1 )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,20]) ).

thf(392,plain,
    ! [A: $i] :
      ( ( A != sk1 )
      | ~ ( sk2 @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[391:[bind(A,$thf( sk2 ))]]) ).

thf(534,plain,
    ~ ( sk2 @ singleton @ ( sk1 @ in ) ),
    inference(simp,[status(thm)],[392]) ).

thf(19,plain,
    ( ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) )
   != ( sk2 @ ( sk1 @ unordered_pair ) ) ),
    inference(cnfConj,[status(thm)],[17]) ).

thf(21,plain,
    ( ( sk2 @ ( sk1 @ unordered_pair ) )
   != ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) ) ),
    inference(lifteq,[status(thm)],[19]) ).

thf(2005,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( sk2 @ ( B @ unordered_pair ) @ singleton @ ( sk1 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,762]) ).

thf(2006,plain,
    ! [B: $i,A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( sk2 @ ( B @ unordered_pair ) @ singleton @ ( sk1 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[2005]) ).

thf(2013,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ singleton )
       != ( sk2 @ ( B @ unordered_pair ) @ singleton ) )
      | ( A
       != ( sk1 @ singleton ) ) ),
    inference(simp,[status(thm)],[2006]) ).

thf(2032,plain,
    ! [A: $i] :
      ( ( sk2 @ ( A @ unordered_pair ) @ singleton )
     != ( sk1 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[2013]) ).

thf(9,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ symmetric_difference ) )
      = ( A @ ( B @ set_difference ) @ ( B @ ( A @ set_difference ) @ set_union2 ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',d6_xboole_0) ).

thf(81,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ symmetric_difference ) )
      = ( A @ ( B @ set_difference ) @ ( B @ ( A @ set_difference ) @ set_union2 ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[9]) ).

thf(82,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ symmetric_difference ) )
      = ( A @ ( B @ set_difference ) @ ( B @ ( A @ set_difference ) @ set_union2 ) ) ),
    inference(cnf,[status(esa)],[81]) ).

thf(83,plain,
    ! [B: $i,A: $i] :
      ( ( A @ ( B @ set_difference ) @ ( B @ ( A @ set_difference ) @ set_union2 ) )
      = ( B @ ( A @ symmetric_difference ) ) ),
    inference(lifteq,[status(thm)],[82]) ).

thf(12,axiom,
    ! [A: $i,B: $i] :
      ( ( A @ ( A @ set_union2 ) )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',idempotence_k2_xboole_0) ).

thf(90,plain,
    ! [A: $i] :
      ( ( A @ ( A @ set_union2 ) )
      = A ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[12]) ).

thf(91,plain,
    ! [A: $i] :
      ( ( A @ ( A @ set_union2 ) )
      = A ),
    inference(cnf,[status(esa)],[90]) ).

thf(92,plain,
    ! [A: $i] :
      ( ( A @ ( A @ set_union2 ) )
      = A ),
    inference(lifteq,[status(thm)],[91]) ).

thf(335,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( A @ ( B @ set_difference ) @ ( B @ ( A @ set_difference ) @ set_union2 ) )
       != ( C @ ( C @ set_union2 ) ) )
      | ( ( B @ ( A @ symmetric_difference ) )
        = C ) ),
    inference(paramod_ordered,[status(thm)],[83,92]) ).

thf(336,plain,
    ! [A: $i] :
      ( ( A @ ( A @ set_difference ) )
      = ( A @ ( A @ symmetric_difference ) ) ),
    inference(pattern_uni,[status(thm)],[335:[bind(A,$thf( E )),bind(B,$thf( E )),bind(C,$thf( E @ ( E @ set_difference ) ))]]) ).

thf(339,plain,
    ! [A: $i] :
      ( ( A @ ( A @ set_difference ) )
      = ( A @ ( A @ symmetric_difference ) ) ),
    inference(simp,[status(thm)],[336]) ).

thf(728,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( A @ ( A @ set_difference ) )
       != ( C @ ( B @ set_difference ) ) )
      | ( ( B @ ( C @ set_difference ) @ ( A @ ( A @ symmetric_difference ) @ set_union2 ) )
        = ( C @ ( B @ symmetric_difference ) ) ) ),
    inference(paramod_ordered,[status(thm)],[339,83]) ).

thf(729,plain,
    ! [A: $i] :
      ( ( A @ ( A @ set_difference ) @ ( A @ ( A @ symmetric_difference ) @ set_union2 ) )
      = ( A @ ( A @ symmetric_difference ) ) ),
    inference(pattern_uni,[status(thm)],[728:[bind(A,$thf( A )),bind(B,$thf( A )),bind(C,$thf( A ))]]) ).

thf(643,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( sk2 @ singleton @ ( sk1 @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[72,534]) ).

thf(644,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
     != ( sk2 @ singleton @ ( sk1 @ in ) ) ),
    inference(simp,[status(thm)],[643]) ).

thf(649,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk2 @ singleton ) )
      | ( A != sk1 ) ),
    inference(simp,[status(thm)],[644]) ).

thf(654,plain,
    ! [A: $i] :
      ( ( A @ ( sk1 @ unordered_pair ) )
     != ( sk2 @ singleton ) ),
    inference(simp,[status(thm)],[649]) ).

thf(1224,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B
       != ( C @ ( sk1 @ unordered_pair ) ) )
      | ( A
       != ( sk2 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,654]) ).

thf(1225,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk2 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ ( sk1 @ unordered_pair ) @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1224:[bind(A,$thf( A )),bind(B,$thf( E @ ( sk1 @ unordered_pair ) )),bind(C,$thf( E ))]]) ).

thf(1238,plain,
    ! [A: $i] :
      ~ ( sk2 @ singleton @ singleton @ ( A @ ( sk1 @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[1225]) ).

thf(1945,plain,
    ! [B: $i,A: $i] :
      ( ( B
       != ( sk9 @ singleton @ singleton @ singleton ) )
      | ( A
       != ( sk8 @ singleton @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,1644]) ).

thf(1946,plain,
    ! [A: $i] :
      ( ( A
       != ( sk8 @ singleton @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( sk9 @ singleton @ singleton @ singleton @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1945:[bind(A,$thf( A )),bind(B,$thf( sk9 @ singleton @ singleton @ singleton ))]]) ).

thf(1968,plain,
    ~ ( sk8 @ singleton @ singleton @ singleton @ singleton @ ( sk9 @ singleton @ singleton @ singleton @ in ) ),
    inference(simp,[status(thm)],[1946]) ).

thf(1288,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk2 @ singleton @ singleton ) )
      | ( B
       != ( sk1 @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,1029]) ).

thf(1289,plain,
    ! [A: $i] :
      ( ( A
       != ( sk1 @ singleton @ singleton ) )
      | ~ ( sk2 @ singleton @ singleton @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1288:[bind(A,$thf( sk2 @ singleton @ singleton )),bind(B,$thf( B ))]]) ).

thf(1296,plain,
    ~ ( sk2 @ singleton @ singleton @ singleton @ ( sk1 @ singleton @ singleton @ in ) ),
    inference(simp,[status(thm)],[1289]) ).

thf(1020,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( sk1 @ singleton @ singleton @ ( sk2 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[72,719]) ).

thf(1021,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
     != ( sk1 @ singleton @ singleton @ ( sk2 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1020]) ).

thf(1024,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk1 @ singleton @ singleton ) )
      | ( A
       != ( sk2 @ singleton ) ) ),
    inference(simp,[status(thm)],[1021]) ).

thf(1027,plain,
    ! [A: $i] :
      ( ( A @ ( sk2 @ singleton @ unordered_pair ) )
     != ( sk1 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1024]) ).

thf(1559,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B
       != ( sk8 @ ( C @ unordered_pair ) ) )
      | ( A
       != ( sk9 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,709]) ).

thf(1560,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk9 @ singleton ) )
      | ~ ( A @ singleton @ ( sk8 @ ( B @ unordered_pair ) @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1559:[bind(A,$thf( A )),bind(B,$thf( sk8 @ ( D @ unordered_pair ) )),bind(C,$thf( D ))]]) ).

thf(1573,plain,
    ! [A: $i] :
      ~ ( sk9 @ singleton @ singleton @ ( sk8 @ ( A @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[1560]) ).

thf(670,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( sk8 @ singleton @ ( sk9 @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[72,599]) ).

thf(671,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
     != ( sk8 @ singleton @ ( sk9 @ in ) ) ),
    inference(simp,[status(thm)],[670]) ).

thf(676,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk8 @ singleton ) )
      | ( A != sk9 ) ),
    inference(simp,[status(thm)],[671]) ).

thf(679,plain,
    ! [A: $i] :
      ( ( A @ ( sk9 @ unordered_pair ) )
     != ( sk8 @ singleton ) ),
    inference(simp,[status(thm)],[676]) ).

thf(1517,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B
       != ( C @ ( sk9 @ unordered_pair ) ) )
      | ( A
       != ( sk8 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,679]) ).

thf(1518,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk8 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ ( sk9 @ unordered_pair ) @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1517:[bind(A,$thf( A )),bind(B,$thf( E @ ( sk9 @ unordered_pair ) )),bind(C,$thf( E ))]]) ).

thf(1534,plain,
    ! [A: $i] :
      ~ ( sk8 @ singleton @ singleton @ ( A @ ( sk9 @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[1518]) ).

thf(36,plain,
    ! [B: $i,A: $i] :
      ( ( B
        = ( A @ singleton ) )
      | ( ( A @ ( B @ sk4 ) )
        = A )
      | ( ( A @ ( B @ sk3 ) )
       != A ) ),
    inference(cnfConj,[status(thm)],[35]) ).

thf(52,plain,
    ! [B: $i,A: $i] :
      ( ( B
        = ( A @ singleton ) )
      | ( ( A @ ( B @ sk4 ) )
        = A )
      | ( ( A @ ( B @ sk3 ) )
       != A ) ),
    inference(lifteq,[status(thm)],[36]) ).

thf(53,plain,
    ! [B: $i,A: $i] :
      ( ( B
        = ( A @ singleton ) )
      | ( ( A @ ( B @ sk4 ) )
        = A )
      | ( ( A @ ( B @ sk3 ) )
       != A ) ),
    inference(simp,[status(thm)],[52]) ).

thf(3082,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( sk1 @ singleton @ singleton @ singleton @ singleton @ ( sk2 @ singleton @ singleton @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,1788]) ).

thf(3083,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( sk1 @ singleton @ singleton @ singleton @ singleton @ ( sk2 @ singleton @ singleton @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[3082]) ).

thf(3126,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != ( sk1 @ singleton @ singleton @ singleton @ singleton ) )
      | ( A
       != ( sk2 @ singleton @ singleton @ singleton ) ) ),
    inference(simp,[status(thm)],[3083]) ).

thf(3141,plain,
    ( ( sk2 @ singleton @ singleton @ singleton @ singleton )
   != ( sk1 @ singleton @ singleton @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[3126]) ).

thf(429,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk2 @ ( sk1 @ unordered_pair ) ) )
      | ( B
       != ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,21]) ).

thf(430,plain,
    ! [A: $i] :
      ( ( A
       != ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) ) )
      | ~ ( sk2 @ ( sk1 @ unordered_pair ) @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[429:[bind(A,$thf( sk2 @ ( sk1 @ unordered_pair ) )),bind(B,$thf( B ))]]) ).

thf(554,plain,
    ~ ( sk2 @ ( sk1 @ unordered_pair ) @ singleton @ ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) @ in ) ),
    inference(simp,[status(thm)],[430]) ).

thf(1521,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A
       != ( C @ ( sk9 @ unordered_pair ) ) )
      | ( B
       != ( sk8 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,679]) ).

thf(1522,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk8 @ singleton ) )
      | ~ ( B @ ( sk9 @ unordered_pair ) @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1521:[bind(A,$thf( E @ ( sk9 @ unordered_pair ) )),bind(B,$thf( B )),bind(C,$thf( E ))]]) ).

thf(1530,plain,
    ! [A: $i] :
      ~ ( A @ ( sk9 @ unordered_pair ) @ singleton @ ( sk8 @ singleton @ in ) ),
    inference(simp,[status(thm)],[1522]) ).

thf(15,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( C @ ( B @ symmetric_difference ) @ ( A @ in ) )
    <=> ~ ( ( B @ ( A @ in ) )
        <=> ( C @ ( A @ in ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t1_xboole_0) ).

thf(98,plain,
    ! [A: $i,B: $i,C: $i] :
      ( ( ~ ( ( ( C @ ( A @ in ) )
             => ( B @ ( A @ in ) ) )
            & ( ( B @ ( A @ in ) )
             => ( C @ ( A @ in ) ) ) )
       => ( C @ ( B @ symmetric_difference ) @ ( A @ in ) ) )
      & ( ( C @ ( B @ symmetric_difference ) @ ( A @ in ) )
       => ~ ( ( ( C @ ( A @ in ) )
             => ( B @ ( A @ in ) ) )
            & ( ( B @ ( A @ in ) )
             => ( C @ ( A @ in ) ) ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[15]) ).

thf(99,plain,
    ( ! [A: $i,B: $i,C: $i] :
        ( ~ ( ( ( C @ ( A @ in ) )
             => ( B @ ( A @ in ) ) )
            & ( ( B @ ( A @ in ) )
             => ( C @ ( A @ in ) ) ) )
       => ( C @ ( B @ symmetric_difference ) @ ( A @ in ) ) )
    & ! [A: $i,B: $i,C: $i] :
        ( ( C @ ( B @ symmetric_difference ) @ ( A @ in ) )
       => ~ ( ( ( C @ ( A @ in ) )
             => ( B @ ( A @ in ) ) )
            & ( ( B @ ( A @ in ) )
             => ( C @ ( A @ in ) ) ) ) ) ),
    inference(miniscope,[status(thm)],[98]) ).

thf(100,plain,
    ! [F: $i,E: $i,D: $i,C: $i,B: $i,A: $i] :
      ( ( ( F @ ( E @ symmetric_difference ) @ ( D @ in ) )
        | ( E @ ( D @ in ) )
        | ~ ( F @ ( D @ in ) ) )
      & ( ( F @ ( E @ symmetric_difference ) @ ( D @ in ) )
        | ( F @ ( D @ in ) )
        | ~ ( E @ ( D @ in ) ) )
      & ( ~ ( B @ ( A @ in ) )
        | ~ ( C @ ( A @ in ) )
        | ~ ( C @ ( B @ symmetric_difference ) @ ( A @ in ) ) )
      & ( ( C @ ( A @ in ) )
        | ~ ( C @ ( A @ in ) )
        | ~ ( C @ ( B @ symmetric_difference ) @ ( A @ in ) ) )
      & ( ~ ( B @ ( A @ in ) )
        | ( B @ ( A @ in ) )
        | ~ ( C @ ( B @ symmetric_difference ) @ ( A @ in ) ) )
      & ( ( C @ ( A @ in ) )
        | ( B @ ( A @ in ) )
        | ~ ( C @ ( B @ symmetric_difference ) @ ( A @ in ) ) ) ),
    inference(cnf,[status(esa)],[99]) ).

thf(105,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( B @ ( A @ in ) )
      | ~ ( C @ ( A @ in ) )
      | ~ ( C @ ( B @ symmetric_difference ) @ ( A @ in ) ) ),
    inference(cnfConj,[status(thm)],[100]) ).

thf(715,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk2 @ singleton ) )
      | ( B
       != ( sk1 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,626]) ).

thf(716,plain,
    ! [A: $i] :
      ( ( A
       != ( sk1 @ singleton ) )
      | ~ ( sk2 @ singleton @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[715:[bind(A,$thf( sk2 @ singleton )),bind(B,$thf( B ))]]) ).

thf(720,plain,
    ~ ( sk2 @ singleton @ singleton @ ( sk1 @ singleton @ in ) ),
    inference(simp,[status(thm)],[716]) ).

thf(1074,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( sk2 @ singleton @ singleton @ ( sk1 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[72,720]) ).

thf(1075,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
     != ( sk2 @ singleton @ singleton @ ( sk1 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1074]) ).

thf(1078,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk2 @ singleton @ singleton ) )
      | ( A
       != ( sk1 @ singleton ) ) ),
    inference(simp,[status(thm)],[1075]) ).

thf(1086,plain,
    ! [A: $i] :
      ( ( A @ ( sk1 @ singleton @ unordered_pair ) )
     != ( sk2 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1078]) ).

thf(230,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( C @ ( C @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[72,121]) ).

thf(231,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
     != ( C @ ( C @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[230]) ).

thf(260,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != C )
      | ( A
       != ( C @ singleton ) ) ),
    inference(simp,[status(thm)],[231]) ).

thf(266,plain,
    ! [B: $i,A: $i] :
      ( ( A @ ( B @ singleton @ unordered_pair ) )
     != B ),
    inference(simp,[status(thm)],[260]) ).

thf(749,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B
       != ( sk2 @ ( C @ unordered_pair ) ) )
      | ( A
       != ( sk1 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,628]) ).

thf(750,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk1 @ singleton ) )
      | ~ ( A @ singleton @ ( sk2 @ ( B @ unordered_pair ) @ in ) ) ),
    inference(pattern_uni,[status(thm)],[749:[bind(A,$thf( A )),bind(B,$thf( sk2 @ ( D @ unordered_pair ) )),bind(C,$thf( D ))]]) ).

thf(765,plain,
    ! [A: $i] :
      ~ ( sk1 @ singleton @ singleton @ ( sk2 @ ( A @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[750]) ).

thf(736,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A
       != ( C @ ( sk2 @ unordered_pair ) ) )
      | ( B
       != ( sk1 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,627]) ).

thf(737,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk1 @ singleton ) )
      | ~ ( B @ ( sk2 @ unordered_pair ) @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[736:[bind(A,$thf( E @ ( sk2 @ unordered_pair ) )),bind(B,$thf( B )),bind(C,$thf( E ))]]) ).

thf(744,plain,
    ! [A: $i] :
      ~ ( A @ ( sk2 @ unordered_pair ) @ singleton @ ( sk1 @ singleton @ in ) ),
    inference(simp,[status(thm)],[737]) ).

thf(1830,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( B @ ( sk2 @ unordered_pair ) @ singleton @ ( sk1 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,744]) ).

thf(1831,plain,
    ! [B: $i,A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( B @ ( sk2 @ unordered_pair ) @ singleton @ ( sk1 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1830]) ).

thf(1836,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ singleton )
       != ( B @ ( sk2 @ unordered_pair ) @ singleton ) )
      | ( A
       != ( sk1 @ singleton ) ) ),
    inference(simp,[status(thm)],[1831]) ).

thf(1846,plain,
    ! [A: $i] :
      ( ( A @ ( sk2 @ unordered_pair ) @ singleton )
     != ( sk1 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1836]) ).

thf(1496,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B
       != ( sk9 @ ( C @ unordered_pair ) ) )
      | ( A
       != ( sk8 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,677]) ).

thf(1497,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk8 @ singleton ) )
      | ~ ( A @ singleton @ ( sk9 @ ( B @ unordered_pair ) @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1496:[bind(A,$thf( A )),bind(B,$thf( sk9 @ ( D @ unordered_pair ) )),bind(C,$thf( D ))]]) ).

thf(1510,plain,
    ! [A: $i] :
      ~ ( sk8 @ singleton @ singleton @ ( sk9 @ ( A @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[1497]) ).

thf(6,axiom,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ symmetric_difference ) )
      = ( A @ ( B @ symmetric_difference ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_k5_xboole_0) ).

thf(30,plain,
    ! [A: $i,B: $i] :
      ( ( B @ ( A @ symmetric_difference ) )
      = ( A @ ( B @ symmetric_difference ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[6]) ).

thf(31,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ symmetric_difference ) )
      = ( A @ ( B @ symmetric_difference ) ) ),
    inference(cnf,[status(esa)],[30]) ).

thf(32,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ symmetric_difference ) )
      = ( A @ ( B @ symmetric_difference ) ) ),
    inference(lifteq,[status(thm)],[31]) ).

thf(39,plain,
    ! [B: $i,A: $i] :
      ( ( B
        = ( A @ singleton ) )
      | ~ ( B @ ( A @ ( B @ sk4 ) @ in ) )
      | ( ( A @ ( B @ sk3 ) )
       != A ) ),
    inference(cnfConj,[status(thm)],[35]) ).

thf(48,plain,
    ! [B: $i,A: $i] :
      ( ~ ( B @ ( A @ ( B @ sk4 ) @ in ) )
      | ( B
        = ( A @ singleton ) )
      | ( ( A @ ( B @ sk3 ) )
       != A ) ),
    inference(lifteq,[status(thm)],[39]) ).

thf(49,plain,
    ! [B: $i,A: $i] :
      ( ~ ( B @ ( A @ ( B @ sk4 ) @ in ) )
      | ( B
        = ( A @ singleton ) )
      | ( ( A @ ( B @ sk3 ) )
       != A ) ),
    inference(simp,[status(thm)],[48]) ).

thf(85,plain,
    ! [A: $i] :
      ( ~ ( A @ empty )
     => ~ ? [B: $i] : ( B @ ( A @ set_union2 ) @ empty ) ),
    inference(miniscope,[status(thm)],[84]) ).

thf(86,plain,
    ! [B: $i,A: $i] :
      ( ~ ( B @ ( A @ set_union2 ) @ empty )
      | ( A @ empty ) ),
    inference(cnf,[status(esa)],[85]) ).

thf(63,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ~ ( C @ ( A @ ( B @ ( C @ sk7 ) ) @ in ) )
      | ( C @ ( B @ ( A @ sk5 ) ) ) ),
    inference(cnfConj,[status(thm)],[56]) ).

thf(75,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( C @ ( A @ ( B @ ( C @ sk7 ) ) @ in ) )
      | ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C
        = ( B @ ( A @ unordered_pair ) ) ) ),
    inference(lifteq,[status(thm)],[63]) ).

thf(76,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( C @ ( A @ ( B @ ( C @ sk7 ) ) @ in ) )
      | ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C
        = ( B @ ( A @ unordered_pair ) ) ) ),
    inference(simp,[status(thm)],[75]) ).

thf(207,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( A @ ( B @ unordered_pair ) )
       != ( D @ ( C @ unordered_pair ) ) )
      | ( ( B @ ( A @ unordered_pair ) )
       != D ) ),
    inference(paramod_ordered,[status(thm)],[26,197]) ).

thf(208,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) )
     != A ),
    inference(pattern_uni,[status(thm)],[207:[bind(A,$thf( A )),bind(B,$thf( B )),bind(C,$thf( B )),bind(D,$thf( A ))]]) ).

thf(423,plain,
    ! [B: $i,A: $i] :
      ( ( B
       != ( sk2 @ ( sk1 @ unordered_pair ) ) )
      | ( A
       != ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,21]) ).

thf(424,plain,
    ! [A: $i] :
      ( ( A
       != ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) ) )
      | ~ ( A @ singleton @ ( sk2 @ ( sk1 @ unordered_pair ) @ in ) ) ),
    inference(pattern_uni,[status(thm)],[423:[bind(A,$thf( A )),bind(B,$thf( sk2 @ ( sk1 @ unordered_pair ) ))]]) ).

thf(553,plain,
    ~ ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) @ singleton @ ( sk2 @ ( sk1 @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[424]) ).

thf(2159,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) @ singleton @ ( sk2 @ ( sk1 @ unordered_pair ) @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,553]) ).

thf(2160,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) @ singleton @ ( sk2 @ ( sk1 @ unordered_pair ) @ in ) ) ),
    inference(simp,[status(thm)],[2159]) ).

thf(2165,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) @ singleton ) )
      | ( A
       != ( sk2 @ ( sk1 @ unordered_pair ) ) ) ),
    inference(simp,[status(thm)],[2160]) ).

thf(2180,plain,
    ( ( sk2 @ ( sk1 @ unordered_pair ) @ singleton )
   != ( sk2 @ singleton @ ( sk1 @ singleton @ symmetric_difference ) @ singleton ) ),
    inference(simp,[status(thm)],[2165]) ).

thf(57,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ~ ( C @ ( B @ ( A @ sk5 ) ) )
      | ( ( A @ ( B @ ( C @ sk6 ) ) )
       != A ) ),
    inference(cnfConj,[status(thm)],[56]) ).

thf(65,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ( ( A @ ( B @ ( C @ sk6 ) ) )
       != A ) ),
    inference(lifteq,[status(thm)],[57]) ).

thf(66,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ( ( A @ ( B @ ( C @ sk6 ) ) )
       != A ) ),
    inference(simp,[status(thm)],[65]) ).

thf(62,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D = B )
      | ( D = A )
      | ~ ( C @ ( D @ in ) )
      | ( C
       != ( B @ ( A @ unordered_pair ) ) ) ),
    inference(cnfConj,[status(thm)],[56]) ).

thf(79,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ~ ( C @ ( D @ in ) )
      | ( D = B )
      | ( D = A )
      | ( C
       != ( B @ ( A @ unordered_pair ) ) ) ),
    inference(lifteq,[status(thm)],[62]) ).

thf(80,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( B @ ( A @ unordered_pair ) @ ( C @ in ) )
      | ( C = B )
      | ( C = A ) ),
    inference(simp,[status(thm)],[79]) ).

thf(629,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( sk2 @ singleton @ ( sk1 @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,534]) ).

thf(630,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
     != ( sk2 @ singleton @ ( sk1 @ in ) ) ),
    inference(simp,[status(thm)],[629]) ).

thf(648,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk2 @ singleton ) )
      | ( B != sk1 ) ),
    inference(simp,[status(thm)],[630]) ).

thf(653,plain,
    ! [A: $i] :
      ( ( sk1 @ ( A @ unordered_pair ) )
     != ( sk2 @ singleton ) ),
    inference(simp,[status(thm)],[648]) ).

thf(697,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( sk9 @ singleton @ ( sk8 @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[72,601]) ).

thf(698,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
     != ( sk9 @ singleton @ ( sk8 @ in ) ) ),
    inference(simp,[status(thm)],[697]) ).

thf(701,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk9 @ singleton ) )
      | ( A != sk8 ) ),
    inference(simp,[status(thm)],[698]) ).

thf(707,plain,
    ! [A: $i] :
      ( ( A @ ( sk8 @ unordered_pair ) )
     != ( sk9 @ singleton ) ),
    inference(simp,[status(thm)],[701]) ).

thf(1538,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B
       != ( C @ ( sk8 @ unordered_pair ) ) )
      | ( A
       != ( sk9 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,707]) ).

thf(1539,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk9 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ ( sk8 @ unordered_pair ) @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1538:[bind(A,$thf( A )),bind(B,$thf( E @ ( sk8 @ unordered_pair ) )),bind(C,$thf( E ))]]) ).

thf(1551,plain,
    ! [A: $i] :
      ~ ( sk9 @ singleton @ singleton @ ( A @ ( sk8 @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[1539]) ).

thf(1207,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A
       != ( sk1 @ ( C @ unordered_pair ) ) )
      | ( B
       != ( sk2 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,653]) ).

thf(1208,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk2 @ singleton ) )
      | ~ ( sk1 @ ( B @ unordered_pair ) @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1207:[bind(A,$thf( sk1 @ ( D @ unordered_pair ) )),bind(B,$thf( B )),bind(C,$thf( D ))]]) ).

thf(1218,plain,
    ! [A: $i] :
      ~ ( sk1 @ ( A @ unordered_pair ) @ singleton @ ( sk2 @ singleton @ in ) ),
    inference(simp,[status(thm)],[1208]) ).

thf(1106,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( sk9 @ singleton @ singleton @ ( sk8 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,980]) ).

thf(1107,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
     != ( sk9 @ singleton @ singleton @ ( sk8 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1106]) ).

thf(1133,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk9 @ singleton @ singleton ) )
      | ( B
       != ( sk8 @ singleton ) ) ),
    inference(simp,[status(thm)],[1107]) ).

thf(1141,plain,
    ! [A: $i] :
      ( ( sk8 @ singleton @ ( A @ unordered_pair ) )
     != ( sk9 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1133]) ).

thf(1228,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A
       != ( C @ ( sk1 @ unordered_pair ) ) )
      | ( B
       != ( sk2 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,654]) ).

thf(1229,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk2 @ singleton ) )
      | ~ ( B @ ( sk1 @ unordered_pair ) @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1228:[bind(A,$thf( E @ ( sk1 @ unordered_pair ) )),bind(B,$thf( B )),bind(C,$thf( E ))]]) ).

thf(1240,plain,
    ! [A: $i] :
      ~ ( A @ ( sk1 @ unordered_pair ) @ singleton @ ( sk2 @ singleton @ in ) ),
    inference(simp,[status(thm)],[1229]) ).

thf(726,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( A @ ( A @ set_difference ) )
       != ( B @ ( C @ set_difference ) ) )
      | ( ( A @ ( A @ symmetric_difference ) @ ( C @ ( B @ set_difference ) @ set_union2 ) )
        = ( C @ ( B @ symmetric_difference ) ) ) ),
    inference(paramod_ordered,[status(thm)],[339,83]) ).

thf(727,plain,
    ! [A: $i] :
      ( ( A @ ( A @ symmetric_difference ) @ ( A @ ( A @ set_difference ) @ set_union2 ) )
      = ( A @ ( A @ symmetric_difference ) ) ),
    inference(pattern_uni,[status(thm)],[726:[bind(A,$thf( A )),bind(B,$thf( A )),bind(C,$thf( A ))]]) ).

thf(1203,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B
       != ( sk1 @ ( C @ unordered_pair ) ) )
      | ( A
       != ( sk2 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,653]) ).

thf(1204,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk2 @ singleton ) )
      | ~ ( A @ singleton @ ( sk1 @ ( B @ unordered_pair ) @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1203:[bind(A,$thf( A )),bind(B,$thf( sk1 @ ( D @ unordered_pair ) )),bind(C,$thf( D ))]]) ).

thf(1216,plain,
    ! [A: $i] :
      ~ ( sk2 @ singleton @ singleton @ ( sk1 @ ( A @ unordered_pair ) @ in ) ),
    inference(simp,[status(thm)],[1204]) ).

thf(1182,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
       != ( sk8 @ singleton @ singleton @ ( sk9 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[72,983]) ).

thf(1183,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ in ) )
     != ( sk8 @ singleton @ singleton @ ( sk9 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1182]) ).

thf(1186,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk8 @ singleton @ singleton ) )
      | ( A
       != ( sk9 @ singleton ) ) ),
    inference(simp,[status(thm)],[1183]) ).

thf(1189,plain,
    ! [A: $i] :
      ( ( A @ ( sk9 @ singleton @ unordered_pair ) )
     != ( sk8 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1186]) ).

thf(1563,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A
       != ( sk8 @ ( C @ unordered_pair ) ) )
      | ( B
       != ( sk9 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,709]) ).

thf(1564,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk9 @ singleton ) )
      | ~ ( sk8 @ ( B @ unordered_pair ) @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1563:[bind(A,$thf( sk8 @ ( D @ unordered_pair ) )),bind(B,$thf( B )),bind(C,$thf( D ))]]) ).

thf(1575,plain,
    ! [A: $i] :
      ~ ( sk8 @ ( A @ unordered_pair ) @ singleton @ ( sk9 @ singleton @ in ) ),
    inference(simp,[status(thm)],[1564]) ).

thf(1542,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A
       != ( C @ ( sk8 @ unordered_pair ) ) )
      | ( B
       != ( sk9 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,707]) ).

thf(1543,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk9 @ singleton ) )
      | ~ ( B @ ( sk8 @ unordered_pair ) @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1542:[bind(A,$thf( E @ ( sk8 @ unordered_pair ) )),bind(B,$thf( B )),bind(C,$thf( E ))]]) ).

thf(1553,plain,
    ! [A: $i] :
      ~ ( A @ ( sk8 @ unordered_pair ) @ singleton @ ( sk9 @ singleton @ in ) ),
    inference(simp,[status(thm)],[1543]) ).

thf(11,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( A @ empty )
     => ~ ( A @ ( B @ set_union2 ) @ empty ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc3_xboole_0) ).

thf(87,plain,
    ! [A: $i,B: $i] :
      ( ~ ( A @ empty )
     => ~ ( A @ ( B @ set_union2 ) @ empty ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[11]) ).

thf(135,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( D @ ( B @ in ) ) )
      | ~ ( C @ ( B @ in ) )
      | ~ $true
      | ~ ( D @ ( C @ symmetric_difference ) @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[43,105]) ).

thf(136,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( D @ ( B @ in ) ) )
      | ~ ( C @ ( B @ in ) )
      | ~ ( D @ ( C @ symmetric_difference ) @ ( B @ in ) ) ),
    inference(simp,[status(thm)],[135]) ).

thf(137,plain,
    ! [B: $i,A: $i] :
      ( ~ ( A @ ( B @ in ) )
      | ~ ( B @ singleton @ ( A @ symmetric_difference ) @ ( B @ in ) ) ),
    inference(pattern_uni,[status(thm)],[136:[bind(A,$thf( E )),bind(B,$thf( E )),bind(C,$thf( C )),bind(D,$thf( E @ singleton ))]]) ).

thf(151,plain,
    ! [B: $i,A: $i] :
      ( ~ ( A @ ( B @ in ) )
      | ~ ( B @ singleton @ ( A @ symmetric_difference ) @ ( B @ in ) ) ),
    inference(simp,[status(thm)],[137]) ).

thf(1500,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A
       != ( sk9 @ ( C @ unordered_pair ) ) )
      | ( B
       != ( sk8 @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,677]) ).

thf(1501,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk8 @ singleton ) )
      | ~ ( sk9 @ ( B @ unordered_pair ) @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1500:[bind(A,$thf( sk9 @ ( D @ unordered_pair ) )),bind(B,$thf( B )),bind(C,$thf( D ))]]) ).

thf(1512,plain,
    ! [A: $i] :
      ~ ( sk9 @ ( A @ unordered_pair ) @ singleton @ ( sk8 @ singleton @ in ) ),
    inference(simp,[status(thm)],[1501]) ).

thf(40,plain,
    ! [B: $i,A: $i] :
      ( ( B
        = ( A @ singleton ) )
      | ( ( A @ ( B @ sk4 ) )
        = A )
      | ( B @ ( A @ ( B @ sk3 ) @ in ) ) ),
    inference(cnfConj,[status(thm)],[35]) ).

thf(50,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ ( B @ sk3 ) @ in ) )
      | ( B
        = ( A @ singleton ) )
      | ( ( A @ ( B @ sk4 ) )
        = A ) ),
    inference(lifteq,[status(thm)],[40]) ).

thf(51,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ ( B @ sk3 ) @ in ) )
      | ( B
        = ( A @ singleton ) )
      | ( ( A @ ( B @ sk4 ) )
        = A ) ),
    inference(simp,[status(thm)],[50]) ).

thf(209,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( C @ ( D @ unordered_pair ) ) )
      | ( ( A @ ( B @ unordered_pair ) )
       != D ) ),
    inference(paramod_ordered,[status(thm)],[26,206]) ).

thf(210,plain,
    ! [B: $i,A: $i] :
      ( ( A @ ( B @ unordered_pair ) )
     != A ),
    inference(pattern_uni,[status(thm)],[209:[bind(A,$thf( A )),bind(B,$thf( B )),bind(C,$thf( B )),bind(D,$thf( A ))]]) ).

thf(123,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ singleton @ ( A @ in ) )
       != ( B @ ( B @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[43,114]) ).

thf(124,plain,
    ! [B: $i,A: $i] :
      ( ( A @ singleton @ ( A @ in ) )
     != ( B @ ( B @ in ) ) ),
    inference(simp,[status(thm)],[123]) ).

thf(125,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ singleton )
       != B )
      | ( A != B ) ),
    inference(simp,[status(thm)],[124]) ).

thf(126,plain,
    ! [A: $i] :
      ( ( A @ singleton )
     != A ),
    inference(simp,[status(thm)],[125]) ).

thf(1777,plain,
    ! [B: $i,A: $i] :
      ( ( A
       != ( sk2 @ singleton @ singleton @ singleton ) )
      | ( B
       != ( sk1 @ singleton @ singleton @ singleton ) )
      | ~ ( A @ singleton @ ( B @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[45,1398]) ).

thf(1778,plain,
    ! [A: $i] :
      ( ( A
       != ( sk1 @ singleton @ singleton @ singleton ) )
      | ~ ( sk2 @ singleton @ singleton @ singleton @ singleton @ ( A @ in ) ) ),
    inference(pattern_uni,[status(thm)],[1777:[bind(A,$thf( sk2 @ singleton @ singleton @ singleton )),bind(B,$thf( B ))]]) ).

thf(1789,plain,
    ~ ( sk2 @ singleton @ singleton @ singleton @ singleton @ ( sk1 @ singleton @ singleton @ singleton @ in ) ),
    inference(simp,[status(thm)],[1778]) ).

thf(282,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( D @ ( C @ unordered_pair ) ) )
      | ~ ( D @ ( A @ ( B @ unordered_pair ) @ in ) ) ),
    inference(paramod_ordered,[status(thm)],[26,202]) ).

thf(283,plain,
    ! [B: $i,A: $i] :
      ~ ( B @ ( A @ ( B @ unordered_pair ) @ in ) ),
    inference(pattern_uni,[status(thm)],[282:[bind(A,$thf( A )),bind(B,$thf( B )),bind(C,$thf( A )),bind(D,$thf( B ))]]) ).

thf(41,plain,
    ! [B: $i,A: $i] :
      ( ( B
        = ( A @ singleton ) )
      | ~ ( B @ ( A @ ( B @ sk4 ) @ in ) )
      | ( B @ ( A @ ( B @ sk3 ) @ in ) ) ),
    inference(cnfConj,[status(thm)],[35]) ).

thf(46,plain,
    ! [B: $i,A: $i] :
      ( ~ ( B @ ( A @ ( B @ sk4 ) @ in ) )
      | ( B @ ( A @ ( B @ sk3 ) @ in ) )
      | ( B
        = ( A @ singleton ) ) ),
    inference(lifteq,[status(thm)],[41]) ).

thf(47,plain,
    ! [B: $i,A: $i] :
      ( ~ ( B @ ( A @ ( B @ sk4 ) @ in ) )
      | ( B @ ( A @ ( B @ sk3 ) @ in ) )
      | ( B
        = ( A @ singleton ) ) ),
    inference(simp,[status(thm)],[46]) ).

thf(61,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C
        = ( B @ ( A @ unordered_pair ) ) )
      | ~ ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C @ ( A @ ( B @ ( C @ sk6 ) ) @ in ) ) ),
    inference(cnfConj,[status(thm)],[56]) ).

thf(67,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C @ ( A @ ( B @ ( C @ sk6 ) ) @ in ) )
      | ( C
        = ( B @ ( A @ unordered_pair ) ) ) ),
    inference(lifteq,[status(thm)],[61]) ).

thf(68,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ~ ( C @ ( B @ ( A @ sk5 ) ) )
      | ( C @ ( A @ ( B @ ( C @ sk6 ) ) @ in ) )
      | ( C
        = ( B @ ( A @ unordered_pair ) ) ) ),
    inference(simp,[status(thm)],[67]) ).

thf(1052,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
       != ( sk2 @ singleton @ singleton @ ( sk1 @ singleton @ in ) ) )
      | ~ $true ),
    inference(paramod_ordered,[status(thm)],[70,720]) ).

thf(1053,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ in ) )
     != ( sk2 @ singleton @ singleton @ ( sk1 @ singleton @ in ) ) ),
    inference(simp,[status(thm)],[1052]) ).

thf(1079,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != ( sk2 @ singleton @ singleton ) )
      | ( B
       != ( sk1 @ singleton ) ) ),
    inference(simp,[status(thm)],[1053]) ).

thf(1088,plain,
    ! [A: $i] :
      ( ( sk1 @ singleton @ ( A @ unordered_pair ) )
     != ( sk2 @ singleton @ singleton ) ),
    inference(simp,[status(thm)],[1079]) ).

thf(100025,plain,
    $false,
    inference(e,[status(thm)],[1030,1322,628,1295,762,1142,677,202,1788,1327,3826,747,709,24,719,1191,196,20,93,1398,78,261,29,121,84,132,74,206,678,534,70,21,2032,729,33,1238,92,197,1968,97,1296,1027,1573,1534,980,53,3141,339,554,1644,679,1530,654,105,1086,266,765,1846,1510,32,45,601,22,27,1139,54,49,86,81,76,98,208,599,2180,66,1029,626,983,80,653,553,1551,1961,707,95,16,1218,744,1141,43,1240,727,72,627,1216,1189,1575,1553,87,26,114,23,151,1512,30,51,210,126,1789,532,720,94,283,47,68,83,1088,90,111]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05  % Problem  : SET888+1 : TPTP v9.3.1. Released v3.2.0.
% 0.00/0.12  % Command  : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39
% 0.24/5.70  % Computer : n019.cluster.edu
% 0.24/5.70  % Model    : x86_64 x86_64
% 0.24/5.70  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.24/5.70  % Memory   : 8046.5625MB
% 0.24/5.70  % OS       : Linux 6.8.0-71-generic
% 0.24/5.70  % CPULimit : 300
% 0.24/5.70  % WCLimit  : 300
% 0.24/5.70  % DateTime : Sat Sep 26 08:24:41 UTC 2026
% 0.24/5.71  % CPUTime  : 
% 0.24/5.71  Running java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox2/solver/bin/leo3.jar /export/starexec/sandbox2/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox2/solver/bin/externals/eprover --instantiate 39
% 1.22/6.33  % [INFO] 	 Parsing problem /export/starexec/sandbox2/benchmark/theBenchmark.p ... 
% 1.77/6.61  % [INFO] 	 Parsing done (277ms). 
% 1.77/6.63  % [INFO] 	 Running in sequential loop mode. 
% 2.49/7.10  % [INFO] 	 eprover registered as external prover. 
% 2.49/7.11  % [INFO] 	 Scanning for conjecture ... 
% 2.80/7.26  % [INFO] 	 Found a conjecture (or negated_conjecture) and 13 axioms. Running axiom selection ... 
% 2.98/7.32  % [INFO] 	 Axiom selection finished. Selected 13 axioms (removed 0 axioms). 
% 2.98/7.36  % [INFO] 	 Problem is first-order (TPTP FOF). 
% 2.98/7.37  % [INFO] 	 Type checking passed. 
% 2.98/7.38  % [CONFIG] 	 Using configuration: timeout(300) with strategy<name(default),share(1.0),primSubst(3),sos(false),unifierCount(4),uniDepth(8),boolExt(true),choice(true),renaming(true),funcspec(false), domConstr(0),specialInstances(39),restrictUniAttempts(true),termOrdering(CPO)>.  Searching for refutation ... 
% 159.16/44.52  % External prover 'e' found a proof!
% 159.16/44.52  % [INFO] 	 Killing All external provers ... 
% 159.16/44.52  % Time passed: 38604ms (effective reasoning time: 37879ms)
% 159.16/44.52  % Solved by strategy<name(default),share(1.0),primSubst(3),sos(false),unifierCount(4),uniDepth(8),boolExt(true),choice(true),renaming(true),funcspec(false), domConstr(0),specialInstances(39),restrictUniAttempts(true),termOrdering(CPO)>
% 159.16/44.52  % Axioms used in derivation (13): d1_tarski, commutativity_k2_xboole_0, fc3_xboole_0, commutativity_k2_tarski, d6_xboole_0, rc1_xboole_0, idempotence_k2_xboole_0, rc2_xboole_0, antisymmetry_r2_hidden, d2_tarski, fc2_xboole_0, t1_xboole_0, commutativity_k5_xboole_0
% 159.16/44.52  % No. of inferences in proof: 367
% 159.16/44.52  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : 38604 ms resp. 37879 ms w/o parsing
% 154.14/44.68  % SZS output start Refutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 154.14/44.68  % [INFO] 	 Killing All external provers ... 
%------------------------------------------------------------------------------