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LEO-II---2.3.1.THM-CRf.s

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%------------------------------------------------------------------------------
% File     : LEO-II---2.3.1
% Problem  : SET929+1 : TPTP v9.3.1. Released v3.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p

% Computer : n005.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 : Wed Oct  7 10:42:36 AM UTC 2026

% Result   : Theorem 0.07s 0.26s
% Output   : CNFRefutation 0.07s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   17
%            Number of leaves      :    6
% Syntax   : Number of formulae    :  138 (  91 unt;   0 typ;   0 def)
%            Number of atoms       :  716 ( 243 equ;   0 cnn)
%            Maximal formula atoms :    3 (   5 avg)
%            Number of connectives : 1398 ( 308   ~; 178   |;  16   &; 872   @)
%                                         (  14 <=>;  10  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    9 (   3 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   12 (   9 usr;   6 con; 0-2 aty)
%            Number of variables   :  260 (   0   ^; 260   !;   0   ?; 260   :)

% 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_SY12,type,
    sK2_SY12: $i ).

thf(tp_sK3_SY14,type,
    sK3_SY14: $i ).

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

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

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

thf(1,axiom,
    ! [A: $i,B: $i,C: $i] :
      ( ( subset @ ( unordered_pair @ A @ B ) @ C )
    <=> ( ( in @ A @ C )
        & ( in @ B @ C ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t38_zfmisc_1) ).

thf(2,axiom,
    ! [A: $i,B: $i] :
      ( ( ( set_difference @ A @ B )
        = empty_set )
    <=> ( subset @ A @ B ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t37_xboole_1) ).

thf(6,axiom,
    empty @ empty_set,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc1_xboole_0) ).

thf(7,axiom,
    ! [A: $i,B: $i] :
      ( ( unordered_pair @ A @ B )
      = ( unordered_pair @ B @ A ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_k2_tarski) ).

thf(8,axiom,
    ! [A: $i,B: $i] :
      ( ( in @ A @ B )
     => ~ ( in @ B @ A ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',antisymmetry_r2_hidden) ).

thf(9,conjecture,
    ! [A: $i,B: $i,C: $i] :
      ( ( ( set_difference @ ( unordered_pair @ A @ B ) @ C )
        = empty_set )
    <=> ( ( in @ A @ C )
        & ( in @ B @ C ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t73_zfmisc_1) ).

thf(10,negated_conjecture,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( set_difference @ ( unordered_pair @ A @ B ) @ C )
            = empty_set )
        <=> ( ( in @ A @ C )
            & ( in @ B @ C ) ) ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[9]) ).

thf(11,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( ( set_difference @ ( unordered_pair @ A @ B ) @ C )
            = empty_set )
        <=> ( ( in @ A @ C )
            & ( in @ B @ C ) ) ) )
    = $false ),
    inference(unfold_def,[status(thm)],[10]) ).

thf(12,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( subset @ ( unordered_pair @ A @ B ) @ C )
        <=> ( ( in @ A @ C )
            & ( in @ B @ C ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1]) ).

thf(13,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[2]) ).

thf(14,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(unfold_def,[status(thm)],[6]) ).

thf(15,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( unordered_pair @ A @ B )
          = ( unordered_pair @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[7]) ).

thf(16,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ~ ( in @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[8]) ).

thf(17,plain,
    ( ( ! [SY12: $i,SY13: $i] :
          ( ( ( set_difference @ ( unordered_pair @ sK1_A @ SY12 ) @ SY13 )
            = empty_set )
        <=> ( ( in @ sK1_A @ SY13 )
            & ( in @ SY12 @ SY13 ) ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[11]) ).

thf(18,plain,
    ( ( ! [SY14: $i] :
          ( ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ SY14 )
            = empty_set )
        <=> ( ( in @ sK1_A @ SY14 )
            & ( in @ sK2_SY12 @ SY14 ) ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[17]) ).

thf(19,plain,
    ( ( ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
        = empty_set )
    <=> ( ( in @ sK1_A @ sK3_SY14 )
        & ( in @ sK2_SY12 @ sK3_SY14 ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[18]) ).

thf(20,plain,
    ( ( ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
        = empty_set )
     => ( ( in @ sK1_A @ sK3_SY14 )
        & ( in @ sK2_SY12 @ sK3_SY14 ) ) )
    = $false ),
    inference(split_conjecture,[split_conjecture(split,[])],[19]) ).

thf(21,plain,
    ( ( ( ( in @ sK1_A @ sK3_SY14 )
        & ( in @ sK2_SY12 @ sK3_SY14 ) )
     => ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
        = empty_set ) )
    = $false ),
    inference(split_conjecture,[split_conjecture(split,[])],[19]) ).

thf(22,plain,
    ( ( ~ ( ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
            = empty_set )
         => ( ( in @ sK1_A @ sK3_SY14 )
            & ( in @ sK2_SY12 @ sK3_SY14 ) ) ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[20]) ).

thf(23,plain,
    ( ( ~ ( ( ( in @ sK1_A @ sK3_SY14 )
            & ( in @ sK2_SY12 @ sK3_SY14 ) )
         => ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
            = empty_set ) ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[21]) ).

thf(24,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[16]) ).

thf(25,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( unordered_pair @ A @ B )
          = ( unordered_pair @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[15]) ).

thf(26,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(copy,[status(thm)],[14]) ).

thf(27,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[13]) ).

thf(28,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( subset @ ( unordered_pair @ A @ B ) @ C )
        <=> ( ( in @ A @ C )
            & ( in @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[12]) ).

thf(29,plain,
    ( ( ~ ( ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
            = empty_set )
         => ( ( in @ sK1_A @ sK3_SY14 )
            & ( in @ sK2_SY12 @ sK3_SY14 ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[22]) ).

thf(30,plain,
    ( ( ~ ( ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
           != empty_set )
          | ~ ( ~ ( in @ sK1_A @ sK3_SY14 )
              | ~ ( in @ sK2_SY12 @ sK3_SY14 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[29]) ).

thf(31,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ( ( set_difference @ SX0 @ SX1 )
                 != empty_set )
                | ( subset @ SX0 @ SX1 ) )
            | ~ ( ~ ( subset @ SX0 @ SX1 )
                | ( ( set_difference @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[27]) ).

thf(32,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( in @ SX0 @ SX1 )
          | ~ ( in @ SX1 @ SX0 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[24]) ).

thf(33,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ~ ( ~ ( ~ ( subset @ ( unordered_pair @ SX0 @ SX1 ) @ SX2 )
                | ~ ( ~ ( in @ SX0 @ SX2 )
                    | ~ ( in @ SX1 @ SX2 ) ) )
            | ~ ( ~ ~ ( ~ ( in @ SX0 @ SX2 )
                      | ~ ( in @ SX1 @ SX2 ) )
                | ( subset @ ( unordered_pair @ SX0 @ SX1 ) @ SX2 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[28]) ).

thf(34,plain,
    ! [SV1: $i] :
      ( ( ! [SY15: $i] :
            ( ( unordered_pair @ SV1 @ SY15 )
            = ( unordered_pair @ SY15 @ SV1 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[25]) ).

thf(35,plain,
    ( ( ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
       != empty_set )
      | ~ ( ~ ( in @ sK1_A @ sK3_SY14 )
          | ~ ( in @ sK2_SY12 @ sK3_SY14 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[30]) ).

thf(36,plain,
    ! [SV2: $i] :
      ( ( ! [SY16: $i] :
            ~ ( ~ ( ( ( set_difference @ SV2 @ SY16 )
                   != empty_set )
                  | ( subset @ SV2 @ SY16 ) )
              | ~ ( ~ ( subset @ SV2 @ SY16 )
                  | ( ( set_difference @ SV2 @ SY16 )
                    = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[31]) ).

thf(37,plain,
    ! [SV3: $i] :
      ( ( ! [SY17: $i] :
            ( ~ ( in @ SV3 @ SY17 )
            | ~ ( in @ SY17 @ SV3 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[32]) ).

thf(38,plain,
    ! [SV4: $i] :
      ( ( ! [SY18: $i,SY19: $i] :
            ~ ( ~ ( ~ ( subset @ ( unordered_pair @ SV4 @ SY18 ) @ SY19 )
                  | ~ ( ~ ( in @ SV4 @ SY19 )
                      | ~ ( in @ SY18 @ SY19 ) ) )
              | ~ ( ~ ~ ( ~ ( in @ SV4 @ SY19 )
                        | ~ ( in @ SY18 @ SY19 ) )
                  | ( subset @ ( unordered_pair @ SV4 @ SY18 ) @ SY19 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[33]) ).

thf(39,plain,
    ! [SV5: $i,SV1: $i] :
      ( ( ( unordered_pair @ SV1 @ SV5 )
        = ( unordered_pair @ SV5 @ SV1 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[34]) ).

thf(40,plain,
    ( ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
     != empty_set )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[35]) ).

thf(41,plain,
    ( ( ~ ( ~ ( in @ sK1_A @ sK3_SY14 )
          | ~ ( in @ sK2_SY12 @ sK3_SY14 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[35]) ).

thf(42,plain,
    ! [SV6: $i,SV2: $i] :
      ( ( ~ ( ~ ( ( ( set_difference @ SV2 @ SV6 )
                 != empty_set )
                | ( subset @ SV2 @ SV6 ) )
            | ~ ( ~ ( subset @ SV2 @ SV6 )
                | ( ( set_difference @ SV2 @ SV6 )
                  = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[36]) ).

thf(43,plain,
    ! [SV7: $i,SV3: $i] :
      ( ( ~ ( in @ SV3 @ SV7 )
        | ~ ( in @ SV7 @ SV3 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[37]) ).

thf(44,plain,
    ! [SV8: $i,SV4: $i] :
      ( ( ! [SY20: $i] :
            ~ ( ~ ( ~ ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SY20 )
                  | ~ ( ~ ( in @ SV4 @ SY20 )
                      | ~ ( in @ SV8 @ SY20 ) ) )
              | ~ ( ~ ~ ( ~ ( in @ SV4 @ SY20 )
                        | ~ ( in @ SV8 @ SY20 ) )
                  | ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SY20 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[38]) ).

thf(45,plain,
    ( ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
      = empty_set )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[40]) ).

thf(46,plain,
    ( ( ~ ( in @ sK1_A @ sK3_SY14 )
      | ~ ( in @ sK2_SY12 @ sK3_SY14 ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[41]) ).

thf(47,plain,
    ! [SV6: $i,SV2: $i] :
      ( ( ~ ( ( ( set_difference @ SV2 @ SV6 )
             != empty_set )
            | ( subset @ SV2 @ SV6 ) )
        | ~ ( ~ ( subset @ SV2 @ SV6 )
            | ( ( set_difference @ SV2 @ SV6 )
              = empty_set ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[42]) ).

thf(48,plain,
    ! [SV7: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV7 ) )
        = $true )
      | ( ( ~ ( in @ SV7 @ SV3 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[43]) ).

thf(49,plain,
    ! [SV9: $i,SV8: $i,SV4: $i] :
      ( ( ~ ( ~ ( ~ ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
                | ~ ( ~ ( in @ SV4 @ SV9 )
                    | ~ ( in @ SV8 @ SV9 ) ) )
            | ~ ( ~ ~ ( ~ ( in @ SV4 @ SV9 )
                      | ~ ( in @ SV8 @ SV9 ) )
                | ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[44]) ).

thf(50,plain,
    ( ( ( ~ ( in @ sK1_A @ sK3_SY14 ) )
      = $true )
    | ( ( ~ ( in @ sK2_SY12 @ sK3_SY14 ) )
      = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[46]) ).

thf(51,plain,
    ! [SV6: $i,SV2: $i] :
      ( ( ~ ( ( ( set_difference @ SV2 @ SV6 )
             != empty_set )
            | ( subset @ SV2 @ SV6 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[47]) ).

thf(52,plain,
    ! [SV6: $i,SV2: $i] :
      ( ( ~ ( ~ ( subset @ SV2 @ SV6 )
            | ( ( set_difference @ SV2 @ SV6 )
              = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[47]) ).

thf(53,plain,
    ! [SV7: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV7 )
        = $false )
      | ( ( ~ ( in @ SV7 @ SV3 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[48]) ).

thf(54,plain,
    ! [SV9: $i,SV8: $i,SV4: $i] :
      ( ( ~ ( ~ ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
            | ~ ( ~ ( in @ SV4 @ SV9 )
                | ~ ( in @ SV8 @ SV9 ) ) )
        | ~ ( ~ ~ ( ~ ( in @ SV4 @ SV9 )
                  | ~ ( in @ SV8 @ SV9 ) )
            | ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[49]) ).

thf(55,plain,
    ( ( ( in @ sK1_A @ sK3_SY14 )
      = $false )
    | ( ( ~ ( in @ sK2_SY12 @ sK3_SY14 ) )
      = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[50]) ).

thf(56,plain,
    ! [SV6: $i,SV2: $i] :
      ( ( ( ( set_difference @ SV2 @ SV6 )
         != empty_set )
        | ( subset @ SV2 @ SV6 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[51]) ).

thf(57,plain,
    ! [SV6: $i,SV2: $i] :
      ( ( ~ ( subset @ SV2 @ SV6 )
        | ( ( set_difference @ SV2 @ SV6 )
          = empty_set ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[52]) ).

thf(58,plain,
    ! [SV3: $i,SV7: $i] :
      ( ( ( in @ SV7 @ SV3 )
        = $false )
      | ( ( in @ SV3 @ SV7 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[53]) ).

thf(59,plain,
    ! [SV9: $i,SV8: $i,SV4: $i] :
      ( ( ~ ( ~ ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
            | ~ ( ~ ( in @ SV4 @ SV9 )
                | ~ ( in @ SV8 @ SV9 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[54]) ).

thf(60,plain,
    ! [SV8: $i,SV9: $i,SV4: $i] :
      ( ( ~ ( ~ ~ ( ~ ( in @ SV4 @ SV9 )
                  | ~ ( in @ SV8 @ SV9 ) )
            | ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[54]) ).

thf(61,plain,
    ( ( ( in @ sK2_SY12 @ sK3_SY14 )
      = $false )
    | ( ( in @ sK1_A @ sK3_SY14 )
      = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[55]) ).

thf(62,plain,
    ! [SV6: $i,SV2: $i] :
      ( ( ( ( set_difference @ SV2 @ SV6 )
         != empty_set )
        = $true )
      | ( ( subset @ SV2 @ SV6 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[56]) ).

thf(63,plain,
    ! [SV6: $i,SV2: $i] :
      ( ( ( ~ ( subset @ SV2 @ SV6 ) )
        = $true )
      | ( ( ( set_difference @ SV2 @ SV6 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[57]) ).

thf(64,plain,
    ! [SV9: $i,SV8: $i,SV4: $i] :
      ( ( ~ ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        | ~ ( ~ ( in @ SV4 @ SV9 )
            | ~ ( in @ SV8 @ SV9 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[59]) ).

thf(65,plain,
    ! [SV8: $i,SV9: $i,SV4: $i] :
      ( ( ~ ~ ( ~ ( in @ SV4 @ SV9 )
              | ~ ( in @ SV8 @ SV9 ) )
        | ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[60]) ).

thf(66,plain,
    ! [SV6: $i,SV2: $i] :
      ( ( ( ( set_difference @ SV2 @ SV6 )
          = empty_set )
        = $false )
      | ( ( subset @ SV2 @ SV6 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[62]) ).

thf(67,plain,
    ! [SV6: $i,SV2: $i] :
      ( ( ( subset @ SV2 @ SV6 )
        = $false )
      | ( ( ( set_difference @ SV2 @ SV6 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[63]) ).

thf(68,plain,
    ! [SV9: $i,SV8: $i,SV4: $i] :
      ( ( ( ~ ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 ) )
        = $true )
      | ( ( ~ ( ~ ( in @ SV4 @ SV9 )
              | ~ ( in @ SV8 @ SV9 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[64]) ).

thf(69,plain,
    ! [SV8: $i,SV9: $i,SV4: $i] :
      ( ( ( ~ ~ ( ~ ( in @ SV4 @ SV9 )
                | ~ ( in @ SV8 @ SV9 ) ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[65]) ).

thf(70,plain,
    ! [SV9: $i,SV8: $i,SV4: $i] :
      ( ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $false )
      | ( ( ~ ( ~ ( in @ SV4 @ SV9 )
              | ~ ( in @ SV8 @ SV9 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[68]) ).

thf(71,plain,
    ! [SV8: $i,SV9: $i,SV4: $i] :
      ( ( ( ~ ( ~ ( in @ SV4 @ SV9 )
              | ~ ( in @ SV8 @ SV9 ) ) )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[69]) ).

thf(72,plain,
    ! [SV8: $i,SV9: $i,SV4: $i] :
      ( ( ( ~ ( in @ SV4 @ SV9 )
          | ~ ( in @ SV8 @ SV9 ) )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[70]) ).

thf(73,plain,
    ! [SV8: $i,SV9: $i,SV4: $i] :
      ( ( ( ~ ( in @ SV4 @ SV9 )
          | ~ ( in @ SV8 @ SV9 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[71]) ).

thf(74,plain,
    ! [SV8: $i,SV9: $i,SV4: $i] :
      ( ( ( ~ ( in @ SV4 @ SV9 ) )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[72]) ).

thf(75,plain,
    ! [SV4: $i,SV9: $i,SV8: $i] :
      ( ( ( ~ ( in @ SV8 @ SV9 ) )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[72]) ).

thf(76,plain,
    ! [SV8: $i,SV9: $i,SV4: $i] :
      ( ( ( ~ ( in @ SV4 @ SV9 ) )
        = $true )
      | ( ( ~ ( in @ SV8 @ SV9 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[73]) ).

thf(77,plain,
    ! [SV8: $i,SV9: $i,SV4: $i] :
      ( ( ( in @ SV4 @ SV9 )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[74]) ).

thf(78,plain,
    ! [SV4: $i,SV9: $i,SV8: $i] :
      ( ( ( in @ SV8 @ SV9 )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[75]) ).

thf(79,plain,
    ! [SV8: $i,SV9: $i,SV4: $i] :
      ( ( ( in @ SV4 @ SV9 )
        = $false )
      | ( ( ~ ( in @ SV8 @ SV9 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[76]) ).

thf(80,plain,
    ! [SV4: $i,SV9: $i,SV8: $i] :
      ( ( ( in @ SV8 @ SV9 )
        = $false )
      | ( ( in @ SV4 @ SV9 )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV4 @ SV8 ) @ SV9 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[79]) ).

thf(81,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[26,80,78,77,67,66,61,58,45,39]) ).

thf(82,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( in @ A @ B )
         => ~ ( in @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[16]) ).

thf(83,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( unordered_pair @ A @ B )
          = ( unordered_pair @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[15]) ).

thf(84,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(copy,[status(thm)],[14]) ).

thf(85,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( set_difference @ A @ B )
            = empty_set )
        <=> ( subset @ A @ B ) ) )
    = $true ),
    inference(copy,[status(thm)],[13]) ).

thf(86,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ( ( subset @ ( unordered_pair @ A @ B ) @ C )
        <=> ( ( in @ A @ C )
            & ( in @ B @ C ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[12]) ).

thf(87,plain,
    ( ( ~ ( ( ( in @ sK1_A @ sK3_SY14 )
            & ( in @ sK2_SY12 @ sK3_SY14 ) )
         => ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
            = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[23]) ).

thf(88,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ~ ( ~ ( ~ ( subset @ ( unordered_pair @ SX0 @ SX1 ) @ SX2 )
                | ~ ( ~ ( in @ SX0 @ SX2 )
                    | ~ ( in @ SX1 @ SX2 ) ) )
            | ~ ( ~ ~ ( ~ ( in @ SX0 @ SX2 )
                      | ~ ( in @ SX1 @ SX2 ) )
                | ( subset @ ( unordered_pair @ SX0 @ SX1 ) @ SX2 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[86]) ).

thf(89,plain,
    ( ( ~ ( ~ ~ ( ~ ( in @ sK1_A @ sK3_SY14 )
                | ~ ( in @ sK2_SY12 @ sK3_SY14 ) )
          | ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
            = empty_set ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[87]) ).

thf(90,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ( ( set_difference @ SX0 @ SX1 )
                 != empty_set )
                | ( subset @ SX0 @ SX1 ) )
            | ~ ( ~ ( subset @ SX0 @ SX1 )
                | ( ( set_difference @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[85]) ).

thf(91,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ~ ( in @ SX0 @ SX1 )
          | ~ ( in @ SX1 @ SX0 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[82]) ).

thf(92,plain,
    ! [SV10: $i] :
      ( ( ! [SY21: $i] :
            ( ( unordered_pair @ SV10 @ SY21 )
            = ( unordered_pair @ SY21 @ SV10 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[83]) ).

thf(93,plain,
    ! [SV11: $i] :
      ( ( ! [SY22: $i,SY23: $i] :
            ~ ( ~ ( ~ ( subset @ ( unordered_pair @ SV11 @ SY22 ) @ SY23 )
                  | ~ ( ~ ( in @ SV11 @ SY23 )
                      | ~ ( in @ SY22 @ SY23 ) ) )
              | ~ ( ~ ~ ( ~ ( in @ SV11 @ SY23 )
                        | ~ ( in @ SY22 @ SY23 ) )
                  | ( subset @ ( unordered_pair @ SV11 @ SY22 ) @ SY23 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[88]) ).

thf(94,plain,
    ( ( ~ ~ ( ~ ( in @ sK1_A @ sK3_SY14 )
            | ~ ( in @ sK2_SY12 @ sK3_SY14 ) )
      | ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
        = empty_set ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[89]) ).

thf(95,plain,
    ! [SV12: $i] :
      ( ( ! [SY24: $i] :
            ~ ( ~ ( ( ( set_difference @ SV12 @ SY24 )
                   != empty_set )
                  | ( subset @ SV12 @ SY24 ) )
              | ~ ( ~ ( subset @ SV12 @ SY24 )
                  | ( ( set_difference @ SV12 @ SY24 )
                    = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[90]) ).

thf(96,plain,
    ! [SV13: $i] :
      ( ( ! [SY25: $i] :
            ( ~ ( in @ SV13 @ SY25 )
            | ~ ( in @ SY25 @ SV13 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[91]) ).

thf(97,plain,
    ! [SV14: $i,SV10: $i] :
      ( ( ( unordered_pair @ SV10 @ SV14 )
        = ( unordered_pair @ SV14 @ SV10 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[92]) ).

thf(98,plain,
    ! [SV15: $i,SV11: $i] :
      ( ( ! [SY26: $i] :
            ~ ( ~ ( ~ ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SY26 )
                  | ~ ( ~ ( in @ SV11 @ SY26 )
                      | ~ ( in @ SV15 @ SY26 ) ) )
              | ~ ( ~ ~ ( ~ ( in @ SV11 @ SY26 )
                        | ~ ( in @ SV15 @ SY26 ) )
                  | ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SY26 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[93]) ).

thf(99,plain,
    ( ( ~ ~ ( ~ ( in @ sK1_A @ sK3_SY14 )
            | ~ ( in @ sK2_SY12 @ sK3_SY14 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[94]) ).

thf(100,plain,
    ( ( ( set_difference @ ( unordered_pair @ sK1_A @ sK2_SY12 ) @ sK3_SY14 )
      = empty_set )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[94]) ).

thf(101,plain,
    ! [SV16: $i,SV12: $i] :
      ( ( ~ ( ~ ( ( ( set_difference @ SV12 @ SV16 )
                 != empty_set )
                | ( subset @ SV12 @ SV16 ) )
            | ~ ( ~ ( subset @ SV12 @ SV16 )
                | ( ( set_difference @ SV12 @ SV16 )
                  = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[95]) ).

thf(102,plain,
    ! [SV17: $i,SV13: $i] :
      ( ( ~ ( in @ SV13 @ SV17 )
        | ~ ( in @ SV17 @ SV13 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[96]) ).

thf(103,plain,
    ! [SV18: $i,SV15: $i,SV11: $i] :
      ( ( ~ ( ~ ( ~ ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
                | ~ ( ~ ( in @ SV11 @ SV18 )
                    | ~ ( in @ SV15 @ SV18 ) ) )
            | ~ ( ~ ~ ( ~ ( in @ SV11 @ SV18 )
                      | ~ ( in @ SV15 @ SV18 ) )
                | ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[98]) ).

thf(104,plain,
    ( ( ~ ( ~ ( in @ sK1_A @ sK3_SY14 )
          | ~ ( in @ sK2_SY12 @ sK3_SY14 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[99]) ).

thf(105,plain,
    ! [SV16: $i,SV12: $i] :
      ( ( ~ ( ( ( set_difference @ SV12 @ SV16 )
             != empty_set )
            | ( subset @ SV12 @ SV16 ) )
        | ~ ( ~ ( subset @ SV12 @ SV16 )
            | ( ( set_difference @ SV12 @ SV16 )
              = empty_set ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[101]) ).

thf(106,plain,
    ! [SV17: $i,SV13: $i] :
      ( ( ( ~ ( in @ SV13 @ SV17 ) )
        = $true )
      | ( ( ~ ( in @ SV17 @ SV13 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[102]) ).

thf(107,plain,
    ! [SV18: $i,SV15: $i,SV11: $i] :
      ( ( ~ ( ~ ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
            | ~ ( ~ ( in @ SV11 @ SV18 )
                | ~ ( in @ SV15 @ SV18 ) ) )
        | ~ ( ~ ~ ( ~ ( in @ SV11 @ SV18 )
                  | ~ ( in @ SV15 @ SV18 ) )
            | ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[103]) ).

thf(108,plain,
    ( ( ~ ( in @ sK1_A @ sK3_SY14 )
      | ~ ( in @ sK2_SY12 @ sK3_SY14 ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[104]) ).

thf(109,plain,
    ! [SV16: $i,SV12: $i] :
      ( ( ~ ( ( ( set_difference @ SV12 @ SV16 )
             != empty_set )
            | ( subset @ SV12 @ SV16 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[105]) ).

thf(110,plain,
    ! [SV16: $i,SV12: $i] :
      ( ( ~ ( ~ ( subset @ SV12 @ SV16 )
            | ( ( set_difference @ SV12 @ SV16 )
              = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[105]) ).

thf(111,plain,
    ! [SV17: $i,SV13: $i] :
      ( ( ( in @ SV13 @ SV17 )
        = $false )
      | ( ( ~ ( in @ SV17 @ SV13 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[106]) ).

thf(112,plain,
    ! [SV18: $i,SV15: $i,SV11: $i] :
      ( ( ~ ( ~ ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
            | ~ ( ~ ( in @ SV11 @ SV18 )
                | ~ ( in @ SV15 @ SV18 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[107]) ).

thf(113,plain,
    ! [SV15: $i,SV18: $i,SV11: $i] :
      ( ( ~ ( ~ ~ ( ~ ( in @ SV11 @ SV18 )
                  | ~ ( in @ SV15 @ SV18 ) )
            | ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[107]) ).

thf(114,plain,
    ( ( ~ ( in @ sK1_A @ sK3_SY14 ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[108]) ).

thf(115,plain,
    ( ( ~ ( in @ sK2_SY12 @ sK3_SY14 ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[108]) ).

thf(116,plain,
    ! [SV16: $i,SV12: $i] :
      ( ( ( ( set_difference @ SV12 @ SV16 )
         != empty_set )
        | ( subset @ SV12 @ SV16 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[109]) ).

thf(117,plain,
    ! [SV16: $i,SV12: $i] :
      ( ( ~ ( subset @ SV12 @ SV16 )
        | ( ( set_difference @ SV12 @ SV16 )
          = empty_set ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[110]) ).

thf(118,plain,
    ! [SV13: $i,SV17: $i] :
      ( ( ( in @ SV17 @ SV13 )
        = $false )
      | ( ( in @ SV13 @ SV17 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[111]) ).

thf(119,plain,
    ! [SV18: $i,SV15: $i,SV11: $i] :
      ( ( ~ ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        | ~ ( ~ ( in @ SV11 @ SV18 )
            | ~ ( in @ SV15 @ SV18 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[112]) ).

thf(120,plain,
    ! [SV15: $i,SV18: $i,SV11: $i] :
      ( ( ~ ~ ( ~ ( in @ SV11 @ SV18 )
              | ~ ( in @ SV15 @ SV18 ) )
        | ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[113]) ).

thf(121,plain,
    ( ( in @ sK1_A @ sK3_SY14 )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[114]) ).

thf(122,plain,
    ( ( in @ sK2_SY12 @ sK3_SY14 )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[115]) ).

thf(123,plain,
    ! [SV16: $i,SV12: $i] :
      ( ( ( ( set_difference @ SV12 @ SV16 )
         != empty_set )
        = $true )
      | ( ( subset @ SV12 @ SV16 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[116]) ).

thf(124,plain,
    ! [SV16: $i,SV12: $i] :
      ( ( ( ~ ( subset @ SV12 @ SV16 ) )
        = $true )
      | ( ( ( set_difference @ SV12 @ SV16 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[117]) ).

thf(125,plain,
    ! [SV18: $i,SV15: $i,SV11: $i] :
      ( ( ( ~ ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 ) )
        = $true )
      | ( ( ~ ( ~ ( in @ SV11 @ SV18 )
              | ~ ( in @ SV15 @ SV18 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[119]) ).

thf(126,plain,
    ! [SV15: $i,SV18: $i,SV11: $i] :
      ( ( ( ~ ~ ( ~ ( in @ SV11 @ SV18 )
                | ~ ( in @ SV15 @ SV18 ) ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[120]) ).

thf(127,plain,
    ! [SV16: $i,SV12: $i] :
      ( ( ( ( set_difference @ SV12 @ SV16 )
          = empty_set )
        = $false )
      | ( ( subset @ SV12 @ SV16 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[123]) ).

thf(128,plain,
    ! [SV16: $i,SV12: $i] :
      ( ( ( subset @ SV12 @ SV16 )
        = $false )
      | ( ( ( set_difference @ SV12 @ SV16 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[124]) ).

thf(129,plain,
    ! [SV18: $i,SV15: $i,SV11: $i] :
      ( ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $false )
      | ( ( ~ ( ~ ( in @ SV11 @ SV18 )
              | ~ ( in @ SV15 @ SV18 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[125]) ).

thf(130,plain,
    ! [SV15: $i,SV18: $i,SV11: $i] :
      ( ( ( ~ ( ~ ( in @ SV11 @ SV18 )
              | ~ ( in @ SV15 @ SV18 ) ) )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[126]) ).

thf(131,plain,
    ! [SV15: $i,SV18: $i,SV11: $i] :
      ( ( ( ~ ( in @ SV11 @ SV18 )
          | ~ ( in @ SV15 @ SV18 ) )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[129]) ).

thf(132,plain,
    ! [SV15: $i,SV18: $i,SV11: $i] :
      ( ( ( ~ ( in @ SV11 @ SV18 )
          | ~ ( in @ SV15 @ SV18 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[130]) ).

thf(133,plain,
    ! [SV15: $i,SV18: $i,SV11: $i] :
      ( ( ( ~ ( in @ SV11 @ SV18 ) )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[131]) ).

thf(134,plain,
    ! [SV11: $i,SV18: $i,SV15: $i] :
      ( ( ( ~ ( in @ SV15 @ SV18 ) )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[131]) ).

thf(135,plain,
    ! [SV15: $i,SV18: $i,SV11: $i] :
      ( ( ( ~ ( in @ SV11 @ SV18 ) )
        = $true )
      | ( ( ~ ( in @ SV15 @ SV18 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[132]) ).

thf(136,plain,
    ! [SV15: $i,SV18: $i,SV11: $i] :
      ( ( ( in @ SV11 @ SV18 )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[133]) ).

thf(137,plain,
    ! [SV11: $i,SV18: $i,SV15: $i] :
      ( ( ( in @ SV15 @ SV18 )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[134]) ).

thf(138,plain,
    ! [SV15: $i,SV18: $i,SV11: $i] :
      ( ( ( in @ SV11 @ SV18 )
        = $false )
      | ( ( ~ ( in @ SV15 @ SV18 ) )
        = $true )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[135]) ).

thf(139,plain,
    ! [SV11: $i,SV18: $i,SV15: $i] :
      ( ( ( in @ SV15 @ SV18 )
        = $false )
      | ( ( in @ SV11 @ SV18 )
        = $false )
      | ( ( subset @ ( unordered_pair @ SV11 @ SV15 ) @ SV18 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[138]) ).

thf(140,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[84,139,137,136,128,127,122,121,118,100,97]) ).

thf(141,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[140,81]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : SET929+1 : TPTP v9.3.1. Released v3.2.0.
% 0.00/0.04  % Command  : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.07/0.18  % Computer : n005.cluster.edu
% 0.07/0.18  % Model    : x86_64 x86_64
% 0.07/0.18  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.18  % Memory   : 8046.5625MB
% 0.07/0.18  % OS       : Linux 6.8.0-71-generic
% 0.07/0.18  % CPULimit : 300
% 0.07/0.18  % WCLimit  : 300
% 0.07/0.18  % DateTime : Tue Oct  6 14:57:14 UTC 2026
% 0.07/0.18  % CPUTime  : 
% 0.07/0.19  Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.07/0.26  
% 0.07/0.26   No.of.Axioms: 5
% 0.07/0.26  
% 0.07/0.26   Length.of.Defs: 0
% 0.07/0.26  
% 0.07/0.26   Contains.Choice.Funs: false
% 0.07/0.26  ...
% 0.07/0.26  
% 0.07/0.26  ********************************
% 0.07/0.26  *   All subproblems solved!    *
% 0.07/0.26  ********************************
% 0.07/0.26  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:1,axioms:5,ps:0,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:false,expand_extuni:false,foatp:e,atp_timeout:299,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:140,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.07/0.26  
% 0.07/0.26  %**** Beginning of derivation protocol ****
% 0.07/0.26  % SZS output start CNFRefutation
% See solution above
% 0.07/0.26  
% 0.07/0.26  %**** End of derivation protocol ****
% 0.07/0.26  %**** no. of clauses in derivation: 138 ****
% 0.07/0.26  %**** clause counter: 140 ****
% 0.07/0.26  
% 0.07/0.26  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:1,axioms:5,ps:0,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:false,expand_extuni:false,foatp:e,atp_timeout:299,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:140,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------