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

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%------------------------------------------------------------------------------
% File     : LEO-II---2.3.1
% Problem  : SEU615^2 : TPTP v9.3.1. Released v3.7.0.
% 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 : n001.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 10:45:35 AM UTC 2026

% Result   : Theorem 0.08s 0.27s
% Output   : CNFRefutation 0.08s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   24
%            Number of leaves      :    2
% Syntax   : Number of formulae    :  142 (  28 unt;   0 typ;   1 def)
%            Number of atoms       : 1478 ( 442 equ;   0 cnn)
%            Maximal formula atoms :    4 (  10 avg)
%            Number of connectives : 2109 ( 396   ~; 512   |;   0   &;1158   @)
%                                         (   0 <=>;  43  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   11 (   6 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :    9 (   6 usr;   6 con; 0-2 aty)
%            Number of variables   :  437 (   0   ^; 437   !;   0   ?; 437   :)

% Comments : 
%------------------------------------------------------------------------------
thf(tp_in,type,
    in: $i > $i > $o ).

thf(tp_sK1_SX0,type,
    sK1_SX0: $i ).

thf(tp_sK2_SY13,type,
    sK2_SY13: $i ).

thf(tp_sK3_SY17,type,
    sK3_SY17: $i ).

thf(tp_symdiff,type,
    symdiff: $i > $i > $i ).

thf(tp_symdiffE,type,
    symdiffE: $o ).

thf(symdiffE,definition,
    ( symdiffE
    = ( ! [A: $i,B: $i,Xx: $i] :
          ( ( in @ Xx @ ( symdiff @ A @ B ) )
         => ! [Xphi: $o] :
              ( ( ( in @ Xx @ A )
               => ( ~ ( in @ Xx @ B )
                 => Xphi ) )
             => ( ( ~ ( in @ Xx @ A )
                 => ( ( in @ Xx @ B )
                   => Xphi ) )
               => Xphi ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',symdiffE) ).

thf(1,conjecture,
    ( symdiffE
   => ! [A: $i,B: $i,Xx: $i] :
        ( ~ ( in @ Xx @ A )
       => ( ~ ( in @ Xx @ B )
         => ~ ( in @ Xx @ ( symdiff @ A @ B ) ) ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',symdiffIneg2) ).

thf(2,negated_conjecture,
    ( ( symdiffE
     => ! [A: $i,B: $i,Xx: $i] :
          ( ~ ( in @ Xx @ A )
         => ( ~ ( in @ Xx @ B )
           => ~ ( in @ Xx @ ( symdiff @ A @ B ) ) ) ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[1]) ).

thf(3,plain,
    ( ( ! [A: $i,B: $i,Xx: $i] :
          ( ( in @ Xx @ ( symdiff @ A @ B ) )
         => ! [Xphi: $o] :
              ( ( ( in @ Xx @ A )
               => ( ~ ( in @ Xx @ B )
                 => Xphi ) )
             => ( ( ~ ( in @ Xx @ A )
                 => ( ( in @ Xx @ B )
                   => Xphi ) )
               => Xphi ) ) )
     => ! [A: $i,B: $i,Xx: $i] :
          ( ~ ( in @ Xx @ A )
         => ( ~ ( in @ Xx @ B )
           => ~ ( in @ Xx @ ( symdiff @ A @ B ) ) ) ) )
    = $false ),
    inference(unfold_def,[status(thm)],[2,symdiffE]) ).

thf(4,plain,
    ( ( ! [A: $i,B: $i,Xx: $i] :
          ( ( in @ Xx @ ( symdiff @ A @ B ) )
         => ! [Xphi: $o] :
              ( ( ( in @ Xx @ A )
               => ( ~ ( in @ Xx @ B )
                 => Xphi ) )
             => ( ( ~ ( in @ Xx @ A )
                 => ( ( in @ Xx @ B )
                   => Xphi ) )
               => Xphi ) ) ) )
    = $true ),
    inference(standard_cnf,[status(thm)],[3]) ).

thf(5,plain,
    ( ( ! [A: $i,B: $i,Xx: $i] :
          ( ~ ( in @ Xx @ A )
         => ( ~ ( in @ Xx @ B )
           => ~ ( in @ Xx @ ( symdiff @ A @ B ) ) ) ) )
    = $false ),
    inference(standard_cnf,[status(thm)],[3]) ).

thf(6,plain,
    ( ( ~ ! [A: $i,B: $i,Xx: $i] :
            ( ~ ( in @ Xx @ A )
           => ( ~ ( in @ Xx @ B )
             => ~ ( in @ Xx @ ( symdiff @ A @ B ) ) ) ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[5]) ).

thf(7,plain,
    ( ( ! [A: $i,B: $i,Xx: $i] :
          ( ( in @ Xx @ ( symdiff @ A @ B ) )
         => ! [Xphi: $o] :
              ( ( ( in @ Xx @ A )
               => ( ~ ( in @ Xx @ B )
                 => Xphi ) )
             => ( ( ~ ( in @ Xx @ A )
                 => ( ( in @ Xx @ B )
                   => Xphi ) )
               => Xphi ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[4]) ).

thf(8,plain,
    ( ( ~ ! [A: $i,B: $i,Xx: $i] :
            ( ~ ( in @ Xx @ A )
           => ( ~ ( in @ Xx @ B )
             => ~ ( in @ Xx @ ( symdiff @ A @ B ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[6]) ).

thf(9,plain,
    ( ( ~ ! [SX0: $i,SX1: $i,SX2: $i] :
            ( ~ ~ ( in @ SX2 @ SX0 )
            | ~ ~ ( in @ SX2 @ SX1 )
            | ~ ( in @ SX2 @ ( symdiff @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[8,symdiffE]) ).

thf(10,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ( ~ ( in @ SX2 @ ( symdiff @ SX0 @ SX1 ) )
          | ! [SX3: $o] :
              ( ~ ( ~ ( in @ SX2 @ SX0 )
                  | ~ ~ ( in @ SX2 @ SX1 )
                  | SX3 )
              | ~ ( ~ ~ ( in @ SX2 @ SX0 )
                  | ~ ( in @ SX2 @ SX1 )
                  | SX3 )
              | SX3 ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[7,symdiffE]) ).

thf(11,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ( ~ ~ ( in @ SX2 @ SX0 )
          | ~ ~ ( in @ SX2 @ SX1 )
          | ~ ( in @ SX2 @ ( symdiff @ SX0 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[9]) ).

thf(12,plain,
    ! [SV1: $i] :
      ( ( ! [SY10: $i,SY11: $i] :
            ( ~ ( in @ SY11 @ ( symdiff @ SV1 @ SY10 ) )
            | ! [SY12: $o] :
                ( ~ ( ~ ( in @ SY11 @ SV1 )
                    | ~ ~ ( in @ SY11 @ SY10 )
                    | SY12 )
                | ~ ( ~ ~ ( in @ SY11 @ SV1 )
                    | ~ ( in @ SY11 @ SY10 )
                    | SY12 )
                | SY12 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[10]) ).

thf(13,plain,
    ( ( ! [SY13: $i,SY14: $i] :
          ( ~ ~ ( in @ SY14 @ sK1_SX0 )
          | ~ ~ ( in @ SY14 @ SY13 )
          | ~ ( in @ SY14 @ ( symdiff @ sK1_SX0 @ SY13 ) ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[11]) ).

thf(14,plain,
    ! [SV2: $i,SV1: $i] :
      ( ( ! [SY15: $i] :
            ( ~ ( in @ SY15 @ ( symdiff @ SV1 @ SV2 ) )
            | ! [SY16: $o] :
                ( ~ ( ~ ( in @ SY15 @ SV1 )
                    | ~ ~ ( in @ SY15 @ SV2 )
                    | SY16 )
                | ~ ( ~ ~ ( in @ SY15 @ SV1 )
                    | ~ ( in @ SY15 @ SV2 )
                    | SY16 )
                | SY16 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[12]) ).

thf(15,plain,
    ( ( ! [SY17: $i] :
          ( ~ ~ ( in @ SY17 @ sK1_SX0 )
          | ~ ~ ( in @ SY17 @ sK2_SY13 )
          | ~ ( in @ SY17 @ ( symdiff @ sK1_SX0 @ sK2_SY13 ) ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[13]) ).

thf(16,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ~ ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        | ! [SY18: $o] :
            ( ~ ( ~ ( in @ SV3 @ SV1 )
                | ~ ~ ( in @ SV3 @ SV2 )
                | SY18 )
            | ~ ( ~ ~ ( in @ SV3 @ SV1 )
                | ~ ( in @ SV3 @ SV2 )
                | SY18 )
            | SY18 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[14]) ).

thf(17,plain,
    ( ( ~ ~ ( in @ sK3_SY17 @ sK1_SX0 )
      | ~ ~ ( in @ sK3_SY17 @ sK2_SY13 )
      | ~ ( in @ sK3_SY17 @ ( symdiff @ sK1_SX0 @ sK2_SY13 ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[15]) ).

thf(18,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) ) )
        = $true )
      | ( ( ! [SY18: $o] :
              ( ~ ( ~ ( in @ SV3 @ SV1 )
                  | ~ ~ ( in @ SV3 @ SV2 )
                  | SY18 )
              | ~ ( ~ ~ ( in @ SV3 @ SV1 )
                  | ~ ( in @ SV3 @ SV2 )
                  | SY18 )
              | SY18 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[16]) ).

thf(19,plain,
    ( ( ~ ~ ( in @ sK3_SY17 @ sK1_SX0 ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[17]) ).

thf(20,plain,
    ( ( ~ ~ ( in @ sK3_SY17 @ sK2_SY13 )
      | ~ ( in @ sK3_SY17 @ ( symdiff @ sK1_SX0 @ sK2_SY13 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[17]) ).

thf(21,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false )
      | ( ( ! [SY18: $o] :
              ( ~ ( ~ ( in @ SV3 @ SV1 )
                  | ~ ~ ( in @ SV3 @ SV2 )
                  | SY18 )
              | ~ ( ~ ~ ( in @ SV3 @ SV1 )
                  | ~ ( in @ SV3 @ SV2 )
                  | SY18 )
              | SY18 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[18]) ).

thf(22,plain,
    ( ( ~ ( in @ sK3_SY17 @ sK1_SX0 ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[19]) ).

thf(23,plain,
    ( ( ~ ~ ( in @ sK3_SY17 @ sK2_SY13 ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[20]) ).

thf(24,plain,
    ( ( ~ ( in @ sK3_SY17 @ ( symdiff @ sK1_SX0 @ sK2_SY13 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[20]) ).

thf(25,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ( in @ SV3 @ SV1 )
              | ~ ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | SV4 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_forall_special_pos,[status(thm)],[21]) ).

thf(26,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ( in @ SV3 @ SV1 )
              | ~ ~ ( in @ SV3 @ SV2 )
              | $true )
          | ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true )
          | $true )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_forall_special_pos,[status(thm)],[21]) ).

thf(27,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ( in @ SV3 @ SV1 )
              | ~ ~ ( in @ SV3 @ SV2 )
              | $false )
          | ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false )
          | $false )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_forall_special_pos,[status(thm)],[21]) ).

thf(28,plain,
    ( ( in @ sK3_SY17 @ sK1_SX0 )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[22]) ).

thf(29,plain,
    ( ( ~ ( in @ sK3_SY17 @ sK2_SY13 ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[23]) ).

thf(30,plain,
    ( ( in @ sK3_SY17 @ ( symdiff @ sK1_SX0 @ sK2_SY13 ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[24]) ).

thf(31,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ( in @ SV3 @ SV1 )
              | ~ ~ ( in @ SV3 @ SV2 )
              | SV4 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | SV4 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[25]) ).

thf(32,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ( in @ SV3 @ SV1 )
              | ~ ~ ( in @ SV3 @ SV2 )
              | $true ) )
        = $true )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true )
          | $true )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[26]) ).

thf(33,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ( in @ SV3 @ SV1 )
              | ~ ~ ( in @ SV3 @ SV2 )
              | $false ) )
        = $true )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false )
          | $false )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[27]) ).

thf(34,plain,
    ( ( in @ sK3_SY17 @ sK2_SY13 )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[29]) ).

thf(35,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 )
          | ~ ~ ( in @ SV3 @ SV2 )
          | SV4 )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | SV4 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[31]) ).

thf(36,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 )
          | ~ ~ ( in @ SV3 @ SV2 )
          | $true )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true )
          | $true )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[32]) ).

thf(37,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 )
          | ~ ~ ( in @ SV3 @ SV2 )
          | $false )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false )
          | $false )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[33]) ).

thf(38,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | SV4 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[35]) ).

thf(39,plain,
    ! [SV1: $i,SV4: $o,SV2: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV2 )
          | SV4 )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | SV4 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[35]) ).

thf(40,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true )
          | $true )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[36]) ).

thf(41,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV2 )
          | $true )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true )
          | $true )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[36]) ).

thf(42,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false )
          | $false )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[37]) ).

thf(43,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV2 )
          | $false )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false )
          | $false )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[37]) ).

thf(44,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | SV4 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[38]) ).

thf(45,plain,
    ! [SV4: $o,SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | SV4 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[39]) ).

thf(46,plain,
    ! [SV2: $i,SV1: $i,SV3: $i,SV4: $o] :
      ( ( SV4 = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | SV4 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[39]) ).

thf(47,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true )
          | $true )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[40]) ).

thf(48,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true )
          | $true )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[41]) ).

thf(49,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( $true = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true )
          | $true )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[41]) ).

thf(50,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false )
          | $false )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[42]) ).

thf(51,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false )
          | $false )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[43]) ).

thf(52,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( $false = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false )
          | $false )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[43]) ).

thf(53,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 ) )
        = $true )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[44]) ).

thf(54,plain,
    ! [SV4: $o,SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | SV4 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[45]) ).

thf(55,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 ) )
        = $true )
      | ( SV4 = $true )
      | ( SV4 = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[46]) ).

thf(56,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true ) )
        = $true )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[47]) ).

thf(57,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true )
          | $true )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[48]) ).

thf(58,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true ) )
        = $true )
      | ( $true = $true )
      | ( $true = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[49]) ).

thf(59,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false ) )
        = $true )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[50]) ).

thf(60,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $true )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false )
          | $false )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[51]) ).

thf(61,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false ) )
        = $true )
      | ( $false = $true )
      | ( $false = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[52]) ).

thf(62,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 )
          | ~ ( in @ SV3 @ SV2 )
          | SV4 )
        = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[53]) ).

thf(63,plain,
    ! [SV4: $o,SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 )
          | SV4 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[54]) ).

thf(64,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 )
          | ~ ( in @ SV3 @ SV2 )
          | SV4 )
        = $false )
      | ( SV4 = $true )
      | ( SV4 = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[55]) ).

thf(65,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 )
          | ~ ( in @ SV3 @ SV2 )
          | $true )
        = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[56]) ).

thf(66,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true )
          | $true )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[57]) ).

thf(67,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 )
          | ~ ( in @ SV3 @ SV2 )
          | $true )
        = $false )
      | ( $true = $true )
      | ( $true = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[58]) ).

thf(68,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 )
          | ~ ( in @ SV3 @ SV2 )
          | $false )
        = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[59]) ).

thf(69,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false )
          | $false )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[60]) ).

thf(70,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 )
          | ~ ( in @ SV3 @ SV2 )
          | $false )
        = $false )
      | ( $false = $true )
      | ( $false = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[61]) ).

thf(71,plain,
    ! [SV2: $i,SV4: $o,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[62]) ).

thf(72,plain,
    ! [SV1: $i,SV4: $o,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 )
          | SV4 )
        = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[62]) ).

thf(73,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | SV4 ) )
        = $true )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[63]) ).

thf(74,plain,
    ! [SV2: $i,SV4: $o,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( SV4 = $true )
      | ( SV4 = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[64]) ).

thf(75,plain,
    ! [SV1: $i,SV4: $o,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 )
          | SV4 )
        = $false )
      | ( SV4 = $true )
      | ( SV4 = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[64]) ).

thf(76,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[65]) ).

thf(77,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 )
          | $true )
        = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[65]) ).

thf(78,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $true ) )
        = $true )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[66]) ).

thf(79,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( $true = $true )
      | ( $true = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[67]) ).

thf(80,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 )
          | $true )
        = $false )
      | ( $true = $true )
      | ( $true = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[67]) ).

thf(81,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[68]) ).

thf(82,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 )
          | $false )
        = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[68]) ).

thf(83,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( ~ ~ ( in @ SV3 @ SV1 )
              | ~ ( in @ SV3 @ SV2 )
              | $false ) )
        = $true )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[69]) ).

thf(84,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( $false = $true )
      | ( $false = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[70]) ).

thf(85,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 )
          | $false )
        = $false )
      | ( $false = $true )
      | ( $false = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[70]) ).

thf(86,plain,
    ! [SV2: $i,SV4: $o,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $true )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[71]) ).

thf(87,plain,
    ! [SV1: $i,SV4: $o,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[72]) ).

thf(88,plain,
    ! [SV2: $i,SV1: $i,SV3: $i,SV4: $o] :
      ( ( SV4 = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[72]) ).

thf(89,plain,
    ! [SV4: $o,SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 )
          | ~ ( in @ SV3 @ SV2 )
          | SV4 )
        = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[73]) ).

thf(90,plain,
    ! [SV2: $i,SV4: $o,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $true )
      | ( SV4 = $true )
      | ( SV4 = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[74]) ).

thf(91,plain,
    ! [SV1: $i,SV4: $o,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( SV4 = $true )
      | ( SV4 = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[75]) ).

thf(92,plain,
    ! [SV2: $i,SV1: $i,SV3: $i,SV4: $o] :
      ( ( SV4 = $false )
      | ( SV4 = $true )
      | ( SV4 = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[75]) ).

thf(93,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $true )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[76]) ).

thf(94,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[77]) ).

thf(95,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( $true = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[77]) ).

thf(96,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 )
          | ~ ( in @ SV3 @ SV2 )
          | $true )
        = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[78]) ).

thf(97,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $true )
      | ( $true = $true )
      | ( $true = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[79]) ).

thf(98,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( $true = $true )
      | ( $true = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[80]) ).

thf(99,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( $true = $false )
      | ( $true = $true )
      | ( $true = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[80]) ).

thf(100,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $true )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[81]) ).

thf(101,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[82]) ).

thf(102,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( $false = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[82]) ).

thf(103,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 )
          | ~ ( in @ SV3 @ SV2 )
          | $false )
        = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[83]) ).

thf(104,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $true )
      | ( $false = $true )
      | ( $false = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[84]) ).

thf(105,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( $false = $true )
      | ( $false = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[85]) ).

thf(106,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( $false = $false )
      | ( $false = $true )
      | ( $false = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[85]) ).

thf(107,plain,
    ! [SV2: $i,SV4: $o,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[86]) ).

thf(108,plain,
    ! [SV1: $i,SV4: $o,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $true )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[87]) ).

thf(109,plain,
    ! [SV2: $i,SV4: $o,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[89]) ).

thf(110,plain,
    ! [SV1: $i,SV4: $o,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 )
          | SV4 )
        = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[89]) ).

thf(111,plain,
    ! [SV2: $i,SV4: $o,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $false )
      | ( SV4 = $true )
      | ( SV4 = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[90]) ).

thf(112,plain,
    ! [SV1: $i,SV4: $o,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $true )
      | ( SV4 = $true )
      | ( SV4 = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[91]) ).

thf(113,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[93]) ).

thf(114,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $true )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[94]) ).

thf(115,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[96]) ).

thf(116,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 )
          | $true )
        = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[96]) ).

thf(117,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $false )
      | ( $true = $true )
      | ( $true = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[97]) ).

thf(118,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $true )
      | ( $true = $true )
      | ( $true = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[98]) ).

thf(119,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[100]) ).

thf(120,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $true )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV1 )
        = $true )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[101]) ).

thf(121,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ~ ( in @ SV3 @ SV1 ) )
        = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[103]) ).

thf(122,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 )
          | $false )
        = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[103]) ).

thf(123,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $false )
      | ( $false = $true )
      | ( $false = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[104]) ).

thf(124,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $true )
      | ( $false = $true )
      | ( $false = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[105]) ).

thf(125,plain,
    ! [SV2: $i,SV4: $o,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $true )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[109]) ).

thf(126,plain,
    ! [SV1: $i,SV4: $o,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[110]) ).

thf(127,plain,
    ! [SV1: $i,SV2: $i,SV3: $i,SV4: $o] :
      ( ( SV4 = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[110]) ).

thf(128,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $true )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[115]) ).

thf(129,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[116]) ).

thf(130,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( $true = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[116]) ).

thf(131,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV1 ) )
        = $true )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[121]) ).

thf(132,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( ~ ( in @ SV3 @ SV2 ) )
        = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[122]) ).

thf(133,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( $false = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[122]) ).

thf(134,plain,
    ! [SV2: $i,SV4: $o,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $false )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[125]) ).

thf(135,plain,
    ! [SV1: $i,SV4: $o,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $true )
      | ( SV4 = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[126]) ).

thf(136,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $false )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[128]) ).

thf(137,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $true )
      | ( $true = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[129]) ).

thf(138,plain,
    ! [SV2: $i,SV1: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV1 )
        = $false )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[131]) ).

thf(139,plain,
    ! [SV1: $i,SV2: $i,SV3: $i] :
      ( ( ( in @ SV3 @ SV2 )
        = $true )
      | ( $false = $true )
      | ( ( in @ SV3 @ SV2 )
        = $false )
      | ( ( in @ SV3 @ ( symdiff @ SV1 @ SV2 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[132]) ).

thf(140,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[28,139,138,137,136,135,134,133,130,127,124,123,120,119,118,117,114,113,112,111,108,107,106,102,99,95,92,88,34,30]) ).

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

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : SEU615^2 : TPTP v9.3.1. Released v3.7.0.
% 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
% 0.08/0.18  % Computer : n001.cluster.edu
% 0.08/0.18  % Model    : x86_64 x86_64
% 0.08/0.18  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.18  % Memory   : 8046.5625MB
% 0.08/0.18  % OS       : Linux 6.8.0-71-generic
% 0.08/0.18  % CPULimit : 300
% 0.08/0.18  % WCLimit  : 300
% 0.08/0.18  % DateTime : Tue Oct  6 15:35:39 UTC 2026
% 0.08/0.18  % CPUTime  : 
% 0.08/0.18  Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox2/solver/bin/eprover /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/0.27  
% 0.08/0.27   No.of.Axioms: 0
% 0.08/0.27  
% 0.08/0.27   Length.of.Defs: 276
% 0.08/0.27  
% 0.08/0.27   Contains.Choice.Funs: false
% 0.08/0.27  ..
% 0.08/0.27  
% 0.08/0.27  ********************************
% 0.08/0.27  *   All subproblems solved!    *
% 0.08/0.27  ********************************
% 0.08/0.27  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:0,axioms:1,ps:3,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:25,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:140,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.08/0.27  
% 0.08/0.27  %**** Beginning of derivation protocol ****
% 0.08/0.27  % SZS output start CNFRefutation
% See solution above
% 0.08/0.27  
% 0.08/0.27  %**** End of derivation protocol ****
% 0.08/0.27  %**** no. of clauses in derivation: 141 ****
% 0.08/0.27  %**** clause counter: 140 ****
% 0.08/0.27  
% 0.08/0.27  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:0,axioms:1,ps:3,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:25,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:140,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------