TSTP Solution File: SET985+1 by LEO-II---1.7.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : LEO-II---1.7.0
% Problem  : SET985+1 : TPTP v8.1.0. Released v3.2.0.
% Transfm  : none
% Format   : tptp
% Command  : leo --timeout %d --proofoutput 1 --foatp e --atp e=./eprover %s

% Computer : n029.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 600s
% DateTime : Tue Jul 19 03:06:46 EDT 2022

% Result   : Theorem 0.20s 0.42s
% Output   : CNFRefutation 0.20s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   16
%            Number of leaves      :   18
% Syntax   : Number of formulae    :  102 (  73 unt;  10 typ;   0 def)
%            Number of atoms       :  450 ( 221 equ;   0 cnn)
%            Maximal formula atoms :    4 (   4 avg)
%            Number of connectives :  849 ( 114   ~; 130   |;  10   &; 581   @)
%                                         (   2 <=>;  12  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   12 (   2 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    5 (   5   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   13 (  10 usr;   9 con; 0-2 aty)
%            Number of variables   :  214 (   0   ^ 210   !;   4   ?; 214   :)

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

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

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

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

thf(tp_sK2_SY15,type,
    sK2_SY15: $i ).

thf(tp_sK3_SY18,type,
    sK3_SY18: $i ).

thf(tp_sK4_SY20,type,
    sK4_SY20: $i ).

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

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

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

thf(1,axiom,
    ! [A: $i] : ( subset @ empty_set @ A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t2_xboole_1) ).

thf(2,axiom,
    ! [A: $i,B: $i,C: $i,D: $i] :
      ( ( subset @ ( cartesian_product2 @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
     => ( ( ( cartesian_product2 @ A @ B )
          = empty_set )
        | ( ( subset @ A @ C )
          & ( subset @ B @ D ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t138_zfmisc_1) ).

thf(3,axiom,
    ! [A: $i,B: $i] :
      ( ( ( cartesian_product2 @ A @ B )
        = empty_set )
    <=> ( ( A = empty_set )
        | ( B = empty_set ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t113_zfmisc_1) ).

thf(4,axiom,
    ! [A: $i,B: $i] : ( subset @ A @ A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',reflexivity_r1_tarski) ).

thf(5,axiom,
    ? [A: $i] :
      ~ ( empty @ A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',rc2_xboole_0) ).

thf(6,axiom,
    ? [A: $i] : ( empty @ A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',rc1_xboole_0) ).

thf(7,axiom,
    empty @ empty_set,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc1_xboole_0) ).

thf(8,conjecture,
    ! [A: $i] :
      ( ~ ( empty @ A )
     => ! [B: $i,C: $i,D: $i] :
          ( ( ( subset @ ( cartesian_product2 @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
            | ( subset @ ( cartesian_product2 @ B @ A ) @ ( cartesian_product2 @ D @ C ) ) )
         => ( subset @ B @ D ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t139_zfmisc_1) ).

thf(9,negated_conjecture,
    ( ( ! [A: $i] :
          ( ~ ( empty @ A )
         => ! [B: $i,C: $i,D: $i] :
              ( ( ( subset @ ( cartesian_product2 @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
                | ( subset @ ( cartesian_product2 @ B @ A ) @ ( cartesian_product2 @ D @ C ) ) )
             => ( subset @ B @ D ) ) ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[8]) ).

thf(10,plain,
    ( ( ! [A: $i] :
          ( ~ ( empty @ A )
         => ! [B: $i,C: $i,D: $i] :
              ( ( ( subset @ ( cartesian_product2 @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
                | ( subset @ ( cartesian_product2 @ B @ A ) @ ( cartesian_product2 @ D @ C ) ) )
             => ( subset @ B @ D ) ) ) )
    = $false ),
    inference(unfold_def,[status(thm)],[9]) ).

thf(11,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1]) ).

thf(12,plain,
    ( ( ! [A: $i,B: $i,C: $i,D: $i] :
          ( ( subset @ ( cartesian_product2 @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
         => ( ( ( cartesian_product2 @ A @ B )
              = empty_set )
            | ( ( subset @ A @ C )
              & ( subset @ B @ D ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[2]) ).

thf(13,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( cartesian_product2 @ A @ B )
            = empty_set )
        <=> ( ( A = empty_set )
            | ( B = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[3]) ).

thf(14,plain,
    ( ( ! [A: $i,B: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[4]) ).

thf(15,plain,
    ( ( ? [A: $i] :
          ~ ( empty @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[5]) ).

thf(16,plain,
    ( ( ? [A: $i] : ( empty @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[6]) ).

thf(17,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(unfold_def,[status(thm)],[7]) ).

thf(18,plain,
    ( ( ~ ( empty @ sK1_A )
     => ! [SY15: $i,SY16: $i,SY17: $i] :
          ( ( ( subset @ ( cartesian_product2 @ sK1_A @ SY15 ) @ ( cartesian_product2 @ SY16 @ SY17 ) )
            | ( subset @ ( cartesian_product2 @ SY15 @ sK1_A ) @ ( cartesian_product2 @ SY17 @ SY16 ) ) )
         => ( subset @ SY15 @ SY17 ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[10]) ).

thf(19,plain,
    ( ( ~ ( empty @ sK1_A ) )
    = $true ),
    inference(standard_cnf,[status(thm)],[18]) ).

thf(20,plain,
    ( ( ! [SY15: $i,SY16: $i,SY17: $i] :
          ( ( ( subset @ ( cartesian_product2 @ sK1_A @ SY15 ) @ ( cartesian_product2 @ SY16 @ SY17 ) )
            | ( subset @ ( cartesian_product2 @ SY15 @ sK1_A ) @ ( cartesian_product2 @ SY17 @ SY16 ) ) )
         => ( subset @ SY15 @ SY17 ) ) )
    = $false ),
    inference(standard_cnf,[status(thm)],[18]) ).

thf(21,plain,
    ( ( ~ ! [SY15: $i,SY16: $i,SY17: $i] :
            ( ( ( subset @ ( cartesian_product2 @ sK1_A @ SY15 ) @ ( cartesian_product2 @ SY16 @ SY17 ) )
              | ( subset @ ( cartesian_product2 @ SY15 @ sK1_A ) @ ( cartesian_product2 @ SY17 @ SY16 ) ) )
           => ( subset @ SY15 @ SY17 ) ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[20]) ).

thf(22,plain,
    ( ( ( ( subset @ ( cartesian_product2 @ sK1_A @ sK2_SY15 ) @ ( cartesian_product2 @ sK3_SY18 @ sK4_SY20 ) )
        | ( subset @ ( cartesian_product2 @ sK2_SY15 @ sK1_A ) @ ( cartesian_product2 @ sK4_SY20 @ sK3_SY18 ) ) )
      & ~ ( subset @ sK2_SY15 @ sK4_SY20 ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[21]) ).

thf(23,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ! [D: $i] :
                  ~ ( subset @ ( cartesian_product2 @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
              | ( subset @ A @ C )
              | ( ( cartesian_product2 @ A @ B )
                = empty_set ) )
          & ! [C: $i,D: $i] :
              ( ~ ( subset @ ( cartesian_product2 @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
              | ( subset @ B @ D )
              | ( ( cartesian_product2 @ A @ B )
                = empty_set ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[12]) ).

thf(24,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( cartesian_product2 @ A @ B )
           != empty_set )
          | ( A = empty_set )
          | ( B = empty_set ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] :
              ( ( cartesian_product2 @ A @ B )
              = empty_set ) )
      & ! [A: $i,B: $i] :
          ( ( B != empty_set )
          | ( ( cartesian_product2 @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[13]) ).

thf(25,plain,
    ( ( ! [A: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[14]) ).

thf(26,plain,
    ( ( ~ ( empty @ sK5_A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[15]) ).

thf(27,plain,
    ( ( empty @ sK6_A )
    = $true ),
    inference(extcnf_combined,[status(esa)],[16]) ).

thf(28,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(copy,[status(thm)],[17]) ).

thf(29,plain,
    ( ( empty @ sK6_A )
    = $true ),
    inference(copy,[status(thm)],[27]) ).

thf(30,plain,
    ( ( ~ ( empty @ sK5_A ) )
    = $true ),
    inference(copy,[status(thm)],[26]) ).

thf(31,plain,
    ( ( ! [A: $i] : ( subset @ A @ A ) )
    = $true ),
    inference(copy,[status(thm)],[25]) ).

thf(32,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( ( cartesian_product2 @ A @ B )
           != empty_set )
          | ( A = empty_set )
          | ( B = empty_set ) )
      & ! [A: $i] :
          ( ( A != empty_set )
          | ! [B: $i] :
              ( ( cartesian_product2 @ A @ B )
              = empty_set ) )
      & ! [A: $i,B: $i] :
          ( ( B != empty_set )
          | ( ( cartesian_product2 @ A @ B )
            = empty_set ) ) )
    = $true ),
    inference(copy,[status(thm)],[24]) ).

thf(33,plain,
    ( ( ! [A: $i,B: $i] :
          ( ! [C: $i] :
              ( ! [D: $i] :
                  ~ ( subset @ ( cartesian_product2 @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
              | ( subset @ A @ C )
              | ( ( cartesian_product2 @ A @ B )
                = empty_set ) )
          & ! [C: $i,D: $i] :
              ( ~ ( subset @ ( cartesian_product2 @ A @ B ) @ ( cartesian_product2 @ C @ D ) )
              | ( subset @ B @ D )
              | ( ( cartesian_product2 @ A @ B )
                = empty_set ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[23]) ).

thf(34,plain,
    ( ( ! [A: $i] : ( subset @ empty_set @ A ) )
    = $true ),
    inference(copy,[status(thm)],[11]) ).

thf(35,plain,
    ( ( ~ ( empty @ sK1_A ) )
    = $true ),
    inference(copy,[status(thm)],[19]) ).

thf(36,plain,
    ( ( ( ( subset @ ( cartesian_product2 @ sK1_A @ sK2_SY15 ) @ ( cartesian_product2 @ sK3_SY18 @ sK4_SY20 ) )
        | ( subset @ ( cartesian_product2 @ sK2_SY15 @ sK1_A ) @ ( cartesian_product2 @ sK4_SY20 @ sK3_SY18 ) ) )
      & ~ ( subset @ sK2_SY15 @ sK4_SY20 ) )
    = $true ),
    inference(copy,[status(thm)],[22]) ).

thf(37,plain,
    ( ( ~ ( ~ ( ( subset @ ( cartesian_product2 @ sK1_A @ sK2_SY15 ) @ ( cartesian_product2 @ sK3_SY18 @ sK4_SY20 ) )
              | ( subset @ ( cartesian_product2 @ sK2_SY15 @ sK1_A ) @ ( cartesian_product2 @ sK4_SY20 @ sK3_SY18 ) ) )
          | ~ ~ ( subset @ sK2_SY15 @ sK4_SY20 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[36]) ).

thf(38,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ! [SX2: $i] :
                  ( ! [SX3: $i] :
                      ~ ( subset @ ( cartesian_product2 @ SX0 @ SX1 ) @ ( cartesian_product2 @ SX2 @ SX3 ) )
                  | ( subset @ SX0 @ SX2 )
                  | ( ( cartesian_product2 @ SX0 @ SX1 )
                    = empty_set ) )
            | ~ ! [SX2: $i,SX3: $i] :
                  ( ~ ( subset @ ( cartesian_product2 @ SX0 @ SX1 ) @ ( cartesian_product2 @ SX2 @ SX3 ) )
                  | ( subset @ SX1 @ SX3 )
                  | ( ( cartesian_product2 @ SX0 @ SX1 )
                    = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[33]) ).

thf(39,plain,
    ( ( ~ ( ~ ! [SX0: $i,SX1: $i] :
                ( ( ( cartesian_product2 @ SX0 @ SX1 )
                 != empty_set )
                | ( SX0 = empty_set )
                | ( SX1 = empty_set ) )
          | ~ ~ ( ~ ! [SX0: $i] :
                      ( ( SX0 != empty_set )
                      | ! [SX1: $i] :
                          ( ( cartesian_product2 @ SX0 @ SX1 )
                          = empty_set ) )
                | ~ ! [SX0: $i,SX1: $i] :
                      ( ( SX1 != empty_set )
                      | ( ( cartesian_product2 @ SX0 @ SX1 )
                        = empty_set ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[32]) ).

thf(40,plain,
    ( ( empty @ sK5_A )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[30]) ).

thf(41,plain,
    ! [SV1: $i] :
      ( ( subset @ SV1 @ SV1 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[31]) ).

thf(42,plain,
    ! [SV2: $i] :
      ( ( subset @ empty_set @ SV2 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[34]) ).

thf(43,plain,
    ( ( empty @ sK1_A )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[35]) ).

thf(44,plain,
    ( ( ~ ( ( subset @ ( cartesian_product2 @ sK1_A @ sK2_SY15 ) @ ( cartesian_product2 @ sK3_SY18 @ sK4_SY20 ) )
          | ( subset @ ( cartesian_product2 @ sK2_SY15 @ sK1_A ) @ ( cartesian_product2 @ sK4_SY20 @ sK3_SY18 ) ) )
      | ~ ~ ( subset @ sK2_SY15 @ sK4_SY20 ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[37]) ).

thf(45,plain,
    ! [SV3: $i] :
      ( ( ! [SY21: $i] :
            ~ ( ~ ! [SY22: $i] :
                    ( ! [SY23: $i] :
                        ~ ( subset @ ( cartesian_product2 @ SV3 @ SY21 ) @ ( cartesian_product2 @ SY22 @ SY23 ) )
                    | ( subset @ SV3 @ SY22 )
                    | ( ( cartesian_product2 @ SV3 @ SY21 )
                      = empty_set ) )
              | ~ ! [SY24: $i,SY25: $i] :
                    ( ~ ( subset @ ( cartesian_product2 @ SV3 @ SY21 ) @ ( cartesian_product2 @ SY24 @ SY25 ) )
                    | ( subset @ SY21 @ SY25 )
                    | ( ( cartesian_product2 @ SV3 @ SY21 )
                      = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[38]) ).

thf(46,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( cartesian_product2 @ SX0 @ SX1 )
             != empty_set )
            | ( SX0 = empty_set )
            | ( SX1 = empty_set ) )
      | ~ ~ ( ~ ! [SX0: $i] :
                  ( ( SX0 != empty_set )
                  | ! [SX1: $i] :
                      ( ( cartesian_product2 @ SX0 @ SX1 )
                      = empty_set ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX1 != empty_set )
                  | ( ( cartesian_product2 @ SX0 @ SX1 )
                    = empty_set ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[39]) ).

thf(47,plain,
    ( ( ~ ( ( subset @ ( cartesian_product2 @ sK1_A @ sK2_SY15 ) @ ( cartesian_product2 @ sK3_SY18 @ sK4_SY20 ) )
          | ( subset @ ( cartesian_product2 @ sK2_SY15 @ sK1_A ) @ ( cartesian_product2 @ sK4_SY20 @ sK3_SY18 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[44]) ).

thf(48,plain,
    ( ( ~ ~ ( subset @ sK2_SY15 @ sK4_SY20 ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[44]) ).

thf(49,plain,
    ! [SV4: $i,SV3: $i] :
      ( ( ~ ( ~ ! [SY26: $i] :
                  ( ! [SY27: $i] :
                      ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SY26 @ SY27 ) )
                  | ( subset @ SV3 @ SY26 )
                  | ( ( cartesian_product2 @ SV3 @ SV4 )
                    = empty_set ) )
            | ~ ! [SY28: $i,SY29: $i] :
                  ( ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SY28 @ SY29 ) )
                  | ( subset @ SV4 @ SY29 )
                  | ( ( cartesian_product2 @ SV3 @ SV4 )
                    = empty_set ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[45]) ).

thf(50,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( ( cartesian_product2 @ SX0 @ SX1 )
             != empty_set )
            | ( SX0 = empty_set )
            | ( SX1 = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[46]) ).

thf(51,plain,
    ( ( ~ ~ ( ~ ! [SX0: $i] :
                  ( ( SX0 != empty_set )
                  | ! [SX1: $i] :
                      ( ( cartesian_product2 @ SX0 @ SX1 )
                      = empty_set ) )
            | ~ ! [SX0: $i,SX1: $i] :
                  ( ( SX1 != empty_set )
                  | ( ( cartesian_product2 @ SX0 @ SX1 )
                    = empty_set ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[46]) ).

thf(52,plain,
    ( ( ( subset @ ( cartesian_product2 @ sK1_A @ sK2_SY15 ) @ ( cartesian_product2 @ sK3_SY18 @ sK4_SY20 ) )
      | ( subset @ ( cartesian_product2 @ sK2_SY15 @ sK1_A ) @ ( cartesian_product2 @ sK4_SY20 @ sK3_SY18 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[47]) ).

thf(53,plain,
    ( ( ~ ( subset @ sK2_SY15 @ sK4_SY20 ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[48]) ).

thf(54,plain,
    ! [SV4: $i,SV3: $i] :
      ( ( ~ ! [SY26: $i] :
              ( ! [SY27: $i] :
                  ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SY26 @ SY27 ) )
              | ( subset @ SV3 @ SY26 )
              | ( ( cartesian_product2 @ SV3 @ SV4 )
                = empty_set ) )
        | ~ ! [SY28: $i,SY29: $i] :
              ( ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SY28 @ SY29 ) )
              | ( subset @ SV4 @ SY29 )
              | ( ( cartesian_product2 @ SV3 @ SV4 )
                = empty_set ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[49]) ).

thf(55,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( ( cartesian_product2 @ SX0 @ SX1 )
           != empty_set )
          | ( SX0 = empty_set )
          | ( SX1 = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[50]) ).

thf(56,plain,
    ( ( ~ ( ~ ! [SX0: $i] :
                ( ( SX0 != empty_set )
                | ! [SX1: $i] :
                    ( ( cartesian_product2 @ SX0 @ SX1 )
                    = empty_set ) )
          | ~ ! [SX0: $i,SX1: $i] :
                ( ( SX1 != empty_set )
                | ( ( cartesian_product2 @ SX0 @ SX1 )
                  = empty_set ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[51]) ).

thf(57,plain,
    ( ( ( subset @ ( cartesian_product2 @ sK1_A @ sK2_SY15 ) @ ( cartesian_product2 @ sK3_SY18 @ sK4_SY20 ) )
      = $true )
    | ( ( subset @ ( cartesian_product2 @ sK2_SY15 @ sK1_A ) @ ( cartesian_product2 @ sK4_SY20 @ sK3_SY18 ) )
      = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[52]) ).

thf(58,plain,
    ( ( subset @ sK2_SY15 @ sK4_SY20 )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[53]) ).

thf(59,plain,
    ! [SV4: $i,SV3: $i] :
      ( ( ~ ! [SY26: $i] :
              ( ! [SY27: $i] :
                  ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SY26 @ SY27 ) )
              | ( subset @ SV3 @ SY26 )
              | ( ( cartesian_product2 @ SV3 @ SV4 )
                = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[54]) ).

thf(60,plain,
    ! [SV4: $i,SV3: $i] :
      ( ( ~ ! [SY28: $i,SY29: $i] :
              ( ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SY28 @ SY29 ) )
              | ( subset @ SV4 @ SY29 )
              | ( ( cartesian_product2 @ SV3 @ SV4 )
                = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[54]) ).

thf(61,plain,
    ! [SV5: $i] :
      ( ( ! [SY30: $i] :
            ( ( ( cartesian_product2 @ SV5 @ SY30 )
             != empty_set )
            | ( SV5 = empty_set )
            | ( SY30 = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[55]) ).

thf(62,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] :
                ( ( cartesian_product2 @ SX0 @ SX1 )
                = empty_set ) )
      | ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1 != empty_set )
            | ( ( cartesian_product2 @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[56]) ).

thf(63,plain,
    ! [SV4: $i,SV3: $i] :
      ( ( ! [SY26: $i] :
            ( ! [SY27: $i] :
                ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SY26 @ SY27 ) )
            | ( subset @ SV3 @ SY26 )
            | ( ( cartesian_product2 @ SV3 @ SV4 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[59]) ).

thf(64,plain,
    ! [SV4: $i,SV3: $i] :
      ( ( ! [SY28: $i,SY29: $i] :
            ( ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SY28 @ SY29 ) )
            | ( subset @ SV4 @ SY29 )
            | ( ( cartesian_product2 @ SV3 @ SV4 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[60]) ).

thf(65,plain,
    ! [SV6: $i,SV5: $i] :
      ( ( ( ( cartesian_product2 @ SV5 @ SV6 )
         != empty_set )
        | ( SV5 = empty_set )
        | ( SV6 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[61]) ).

thf(66,plain,
    ( ( ~ ! [SX0: $i] :
            ( ( SX0 != empty_set )
            | ! [SX1: $i] :
                ( ( cartesian_product2 @ SX0 @ SX1 )
                = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[62]) ).

thf(67,plain,
    ( ( ~ ! [SX0: $i,SX1: $i] :
            ( ( SX1 != empty_set )
            | ( ( cartesian_product2 @ SX0 @ SX1 )
              = empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[62]) ).

thf(68,plain,
    ! [SV7: $i,SV4: $i,SV3: $i] :
      ( ( ! [SY31: $i] :
            ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SV7 @ SY31 ) )
        | ( subset @ SV3 @ SV7 )
        | ( ( cartesian_product2 @ SV3 @ SV4 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[63]) ).

thf(69,plain,
    ! [SV8: $i,SV4: $i,SV3: $i] :
      ( ( ! [SY32: $i] :
            ( ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SV8 @ SY32 ) )
            | ( subset @ SV4 @ SY32 )
            | ( ( cartesian_product2 @ SV3 @ SV4 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[64]) ).

thf(70,plain,
    ! [SV6: $i,SV5: $i] :
      ( ( ( ( ( cartesian_product2 @ SV5 @ SV6 )
           != empty_set ) )
        = $true )
      | ( ( ( SV5 = empty_set )
          | ( SV6 = empty_set ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[65]) ).

thf(71,plain,
    ( ( ! [SX0: $i] :
          ( ( SX0 != empty_set )
          | ! [SX1: $i] :
              ( ( cartesian_product2 @ SX0 @ SX1 )
              = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[66]) ).

thf(72,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ( ( SX1 != empty_set )
          | ( ( cartesian_product2 @ SX0 @ SX1 )
            = empty_set ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[67]) ).

thf(73,plain,
    ! [SV7: $i,SV4: $i,SV3: $i] :
      ( ( ( ! [SY31: $i] :
              ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SV7 @ SY31 ) ) )
        = $true )
      | ( ( ( subset @ SV3 @ SV7 )
          | ( ( cartesian_product2 @ SV3 @ SV4 )
            = empty_set ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[68]) ).

thf(74,plain,
    ! [SV9: $i,SV8: $i,SV4: $i,SV3: $i] :
      ( ( ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SV8 @ SV9 ) )
        | ( subset @ SV4 @ SV9 )
        | ( ( cartesian_product2 @ SV3 @ SV4 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[69]) ).

thf(75,plain,
    ! [SV6: $i,SV5: $i] :
      ( ( ( ( cartesian_product2 @ SV5 @ SV6 )
          = empty_set )
        = $false )
      | ( ( ( SV5 = empty_set )
          | ( SV6 = empty_set ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[70]) ).

thf(76,plain,
    ! [SV10: $i] :
      ( ( ( SV10 != empty_set )
        | ! [SY33: $i] :
            ( ( cartesian_product2 @ SV10 @ SY33 )
            = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[71]) ).

thf(77,plain,
    ! [SV11: $i] :
      ( ( ! [SY34: $i] :
            ( ( SY34 != empty_set )
            | ( ( cartesian_product2 @ SV11 @ SY34 )
              = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[72]) ).

thf(78,plain,
    ! [SV12: $i,SV7: $i,SV4: $i,SV3: $i] :
      ( ( ( ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SV7 @ SV12 ) ) )
        = $true )
      | ( ( ( subset @ SV3 @ SV7 )
          | ( ( cartesian_product2 @ SV3 @ SV4 )
            = empty_set ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[73]) ).

thf(79,plain,
    ! [SV9: $i,SV8: $i,SV4: $i,SV3: $i] :
      ( ( ( ~ ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SV8 @ SV9 ) ) )
        = $true )
      | ( ( ( subset @ SV4 @ SV9 )
          | ( ( cartesian_product2 @ SV3 @ SV4 )
            = empty_set ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[74]) ).

thf(80,plain,
    ! [SV6: $i,SV5: $i] :
      ( ( ( SV5 = empty_set )
        = $true )
      | ( ( SV6 = empty_set )
        = $true )
      | ( ( ( cartesian_product2 @ SV5 @ SV6 )
          = empty_set )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[75]) ).

thf(81,plain,
    ! [SV10: $i] :
      ( ( ( ( SV10 != empty_set ) )
        = $true )
      | ( ( ! [SY33: $i] :
              ( ( cartesian_product2 @ SV10 @ SY33 )
              = empty_set ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[76]) ).

thf(82,plain,
    ! [SV11: $i,SV13: $i] :
      ( ( ( SV13 != empty_set )
        | ( ( cartesian_product2 @ SV11 @ SV13 )
          = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[77]) ).

thf(83,plain,
    ! [SV12: $i,SV7: $i,SV4: $i,SV3: $i] :
      ( ( ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SV7 @ SV12 ) )
        = $false )
      | ( ( ( subset @ SV3 @ SV7 )
          | ( ( cartesian_product2 @ SV3 @ SV4 )
            = empty_set ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[78]) ).

thf(84,plain,
    ! [SV9: $i,SV8: $i,SV4: $i,SV3: $i] :
      ( ( ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SV8 @ SV9 ) )
        = $false )
      | ( ( ( subset @ SV4 @ SV9 )
          | ( ( cartesian_product2 @ SV3 @ SV4 )
            = empty_set ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[79]) ).

thf(85,plain,
    ! [SV10: $i] :
      ( ( ( SV10 = empty_set )
        = $false )
      | ( ( ! [SY33: $i] :
              ( ( cartesian_product2 @ SV10 @ SY33 )
              = empty_set ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[81]) ).

thf(86,plain,
    ! [SV11: $i,SV13: $i] :
      ( ( ( ( SV13 != empty_set ) )
        = $true )
      | ( ( ( cartesian_product2 @ SV11 @ SV13 )
          = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[82]) ).

thf(87,plain,
    ! [SV12: $i,SV4: $i,SV7: $i,SV3: $i] :
      ( ( ( subset @ SV3 @ SV7 )
        = $true )
      | ( ( ( cartesian_product2 @ SV3 @ SV4 )
          = empty_set )
        = $true )
      | ( ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SV7 @ SV12 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[83]) ).

thf(88,plain,
    ! [SV8: $i,SV3: $i,SV9: $i,SV4: $i] :
      ( ( ( subset @ SV4 @ SV9 )
        = $true )
      | ( ( ( cartesian_product2 @ SV3 @ SV4 )
          = empty_set )
        = $true )
      | ( ( subset @ ( cartesian_product2 @ SV3 @ SV4 ) @ ( cartesian_product2 @ SV8 @ SV9 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[84]) ).

thf(89,plain,
    ! [SV14: $i,SV10: $i] :
      ( ( ( ( cartesian_product2 @ SV10 @ SV14 )
          = empty_set )
        = $true )
      | ( ( SV10 = empty_set )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[85]) ).

thf(90,plain,
    ! [SV11: $i,SV13: $i] :
      ( ( ( SV13 = empty_set )
        = $false )
      | ( ( ( cartesian_product2 @ SV11 @ SV13 )
          = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[86]) ).

thf(91,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[28,90,89,88,87,80,58,57,43,42,41,40,29]) ).

thf(92,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[91]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : SET985+1 : TPTP v8.1.0. Released v3.2.0.
% 0.07/0.13  % Command  : leo --timeout %d --proofoutput 1 --foatp e --atp e=./eprover %s
% 0.13/0.34  % Computer : n029.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % WCLimit  : 600
% 0.13/0.34  % DateTime : Mon Jul 11 06:33:02 EDT 2022
% 0.13/0.34  % CPUTime  : 
% 0.13/0.35  
% 0.13/0.35   No.of.Axioms: 7
% 0.13/0.35  
% 0.13/0.35   Length.of.Defs: 0
% 0.13/0.35  
% 0.13/0.35   Contains.Choice.Funs: false
% 0.13/0.36  (rf:0,axioms:7,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:600,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:9,loop_count:0,foatp_calls:0,translation:fof_full)......
% 0.20/0.42  
% 0.20/0.42  ********************************
% 0.20/0.42  *   All subproblems solved!    *
% 0.20/0.42  ********************************
% 0.20/0.42  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:0,axioms:8,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:74,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:91,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.20/0.42  
% 0.20/0.42  %**** Beginning of derivation protocol ****
% 0.20/0.42  % SZS output start CNFRefutation
% See solution above
% 0.20/0.42  
% 0.20/0.42  %**** End of derivation protocol ****
% 0.20/0.42  %**** no. of clauses in derivation: 92 ****
% 0.20/0.42  %**** clause counter: 91 ****
% 0.20/0.42  
% 0.20/0.42  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:0,axioms:8,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:74,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:91,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------