TSTP Solution File: SET615+3 by SInE---0.4

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : SInE---0.4
% Problem  : SET615+3 : TPTP v5.0.0. Released v2.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : Source/sine.py -e eprover -t %d %s

% Computer : art07.cs.miami.edu
% Model    : i686 i686
% CPU      : Intel(R) Pentium(R) 4 CPU 2.80GHz @ 2793MHz
% Memory   : 2018MB
% OS       : Linux 2.6.26.8-57.fc8
% CPULimit : 300s
% DateTime : Sun Dec 26 03:02:56 EST 2010

% Result   : Theorem 95.31s
% Output   : CNFRefutation 95.31s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   44
%            Number of leaves      :    6
% Syntax   : Number of formulae    :  149 (  67 unt;   0 def)
%            Number of atoms       :  307 (  70 equ)
%            Maximal formula atoms :    7 (   2 avg)
%            Number of connectives :  251 (  93   ~; 121   |;  31   &)
%                                         (   5 <=>;   1  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    8 (   3 avg)
%            Maximal term depth    :    4 (   1 avg)
%            Number of predicates  :    4 (   2 usr;   1 prp; 0-2 aty)
%            Number of functors    :    6 (   6 usr;   3 con; 0-2 aty)
%            Number of variables   :  398 (  37 sgn  63   !;   8   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(1,axiom,
    ! [X1,X2] : union(X1,X2) = union(X2,X1),
    file('/tmp/tmpYyBYm3/sel_SET615+3.p_2',commutativity_of_union) ).

fof(2,axiom,
    ! [X1,X2] :
      ( X1 = X2
    <=> ( subset(X1,X2)
        & subset(X2,X1) ) ),
    file('/tmp/tmpYyBYm3/sel_SET615+3.p_2',equal_defn) ).

fof(3,conjecture,
    ! [X1,X2,X3] : difference(union(X1,X2),X3) = union(difference(X1,X3),difference(X2,X3)),
    file('/tmp/tmpYyBYm3/sel_SET615+3.p_2',prove_difference_distributes_over_union) ).

fof(4,axiom,
    ! [X1,X2,X3] :
      ( member(X3,union(X1,X2))
    <=> ( member(X3,X1)
        | member(X3,X2) ) ),
    file('/tmp/tmpYyBYm3/sel_SET615+3.p_2',union_defn) ).

fof(5,axiom,
    ! [X1,X2] :
      ( subset(X1,X2)
    <=> ! [X3] :
          ( member(X3,X1)
         => member(X3,X2) ) ),
    file('/tmp/tmpYyBYm3/sel_SET615+3.p_2',subset_defn) ).

fof(7,axiom,
    ! [X1,X2,X3] :
      ( member(X3,difference(X1,X2))
    <=> ( member(X3,X1)
        & ~ member(X3,X2) ) ),
    file('/tmp/tmpYyBYm3/sel_SET615+3.p_2',difference_defn) ).

fof(9,negated_conjecture,
    ~ ! [X1,X2,X3] : difference(union(X1,X2),X3) = union(difference(X1,X3),difference(X2,X3)),
    inference(assume_negation,[status(cth)],[3]) ).

fof(10,plain,
    ! [X1,X2,X3] :
      ( member(X3,difference(X1,X2))
    <=> ( member(X3,X1)
        & ~ member(X3,X2) ) ),
    inference(fof_simplification,[status(thm)],[7,theory(equality)]) ).

fof(11,plain,
    ! [X3,X4] : union(X3,X4) = union(X4,X3),
    inference(variable_rename,[status(thm)],[1]) ).

cnf(12,plain,
    union(X1,X2) = union(X2,X1),
    inference(split_conjunct,[status(thm)],[11]) ).

fof(13,plain,
    ! [X1,X2] :
      ( ( X1 != X2
        | ( subset(X1,X2)
          & subset(X2,X1) ) )
      & ( ~ subset(X1,X2)
        | ~ subset(X2,X1)
        | X1 = X2 ) ),
    inference(fof_nnf,[status(thm)],[2]) ).

fof(14,plain,
    ! [X3,X4] :
      ( ( X3 != X4
        | ( subset(X3,X4)
          & subset(X4,X3) ) )
      & ( ~ subset(X3,X4)
        | ~ subset(X4,X3)
        | X3 = X4 ) ),
    inference(variable_rename,[status(thm)],[13]) ).

fof(15,plain,
    ! [X3,X4] :
      ( ( subset(X3,X4)
        | X3 != X4 )
      & ( subset(X4,X3)
        | X3 != X4 )
      & ( ~ subset(X3,X4)
        | ~ subset(X4,X3)
        | X3 = X4 ) ),
    inference(distribute,[status(thm)],[14]) ).

cnf(16,plain,
    ( X1 = X2
    | ~ subset(X2,X1)
    | ~ subset(X1,X2) ),
    inference(split_conjunct,[status(thm)],[15]) ).

fof(19,negated_conjecture,
    ? [X1,X2,X3] : difference(union(X1,X2),X3) != union(difference(X1,X3),difference(X2,X3)),
    inference(fof_nnf,[status(thm)],[9]) ).

fof(20,negated_conjecture,
    ? [X4,X5,X6] : difference(union(X4,X5),X6) != union(difference(X4,X6),difference(X5,X6)),
    inference(variable_rename,[status(thm)],[19]) ).

fof(21,negated_conjecture,
    difference(union(esk1_0,esk2_0),esk3_0) != union(difference(esk1_0,esk3_0),difference(esk2_0,esk3_0)),
    inference(skolemize,[status(esa)],[20]) ).

cnf(22,negated_conjecture,
    difference(union(esk1_0,esk2_0),esk3_0) != union(difference(esk1_0,esk3_0),difference(esk2_0,esk3_0)),
    inference(split_conjunct,[status(thm)],[21]) ).

fof(23,plain,
    ! [X1,X2,X3] :
      ( ( ~ member(X3,union(X1,X2))
        | member(X3,X1)
        | member(X3,X2) )
      & ( ( ~ member(X3,X1)
          & ~ member(X3,X2) )
        | member(X3,union(X1,X2)) ) ),
    inference(fof_nnf,[status(thm)],[4]) ).

fof(24,plain,
    ! [X4,X5,X6] :
      ( ( ~ member(X6,union(X4,X5))
        | member(X6,X4)
        | member(X6,X5) )
      & ( ( ~ member(X6,X4)
          & ~ member(X6,X5) )
        | member(X6,union(X4,X5)) ) ),
    inference(variable_rename,[status(thm)],[23]) ).

fof(25,plain,
    ! [X4,X5,X6] :
      ( ( ~ member(X6,union(X4,X5))
        | member(X6,X4)
        | member(X6,X5) )
      & ( ~ member(X6,X4)
        | member(X6,union(X4,X5)) )
      & ( ~ member(X6,X5)
        | member(X6,union(X4,X5)) ) ),
    inference(distribute,[status(thm)],[24]) ).

cnf(26,plain,
    ( member(X1,union(X2,X3))
    | ~ member(X1,X3) ),
    inference(split_conjunct,[status(thm)],[25]) ).

cnf(27,plain,
    ( member(X1,union(X2,X3))
    | ~ member(X1,X2) ),
    inference(split_conjunct,[status(thm)],[25]) ).

cnf(28,plain,
    ( member(X1,X2)
    | member(X1,X3)
    | ~ member(X1,union(X3,X2)) ),
    inference(split_conjunct,[status(thm)],[25]) ).

fof(29,plain,
    ! [X1,X2] :
      ( ( ~ subset(X1,X2)
        | ! [X3] :
            ( ~ member(X3,X1)
            | member(X3,X2) ) )
      & ( ? [X3] :
            ( member(X3,X1)
            & ~ member(X3,X2) )
        | subset(X1,X2) ) ),
    inference(fof_nnf,[status(thm)],[5]) ).

fof(30,plain,
    ! [X4,X5] :
      ( ( ~ subset(X4,X5)
        | ! [X6] :
            ( ~ member(X6,X4)
            | member(X6,X5) ) )
      & ( ? [X7] :
            ( member(X7,X4)
            & ~ member(X7,X5) )
        | subset(X4,X5) ) ),
    inference(variable_rename,[status(thm)],[29]) ).

fof(31,plain,
    ! [X4,X5] :
      ( ( ~ subset(X4,X5)
        | ! [X6] :
            ( ~ member(X6,X4)
            | member(X6,X5) ) )
      & ( ( member(esk4_2(X4,X5),X4)
          & ~ member(esk4_2(X4,X5),X5) )
        | subset(X4,X5) ) ),
    inference(skolemize,[status(esa)],[30]) ).

fof(32,plain,
    ! [X4,X5,X6] :
      ( ( ~ member(X6,X4)
        | member(X6,X5)
        | ~ subset(X4,X5) )
      & ( ( member(esk4_2(X4,X5),X4)
          & ~ member(esk4_2(X4,X5),X5) )
        | subset(X4,X5) ) ),
    inference(shift_quantors,[status(thm)],[31]) ).

fof(33,plain,
    ! [X4,X5,X6] :
      ( ( ~ member(X6,X4)
        | member(X6,X5)
        | ~ subset(X4,X5) )
      & ( member(esk4_2(X4,X5),X4)
        | subset(X4,X5) )
      & ( ~ member(esk4_2(X4,X5),X5)
        | subset(X4,X5) ) ),
    inference(distribute,[status(thm)],[32]) ).

cnf(34,plain,
    ( subset(X1,X2)
    | ~ member(esk4_2(X1,X2),X2) ),
    inference(split_conjunct,[status(thm)],[33]) ).

cnf(35,plain,
    ( subset(X1,X2)
    | member(esk4_2(X1,X2),X1) ),
    inference(split_conjunct,[status(thm)],[33]) ).

cnf(36,plain,
    ( member(X3,X2)
    | ~ subset(X1,X2)
    | ~ member(X3,X1) ),
    inference(split_conjunct,[status(thm)],[33]) ).

fof(46,plain,
    ! [X1,X2,X3] :
      ( ( ~ member(X3,difference(X1,X2))
        | ( member(X3,X1)
          & ~ member(X3,X2) ) )
      & ( ~ member(X3,X1)
        | member(X3,X2)
        | member(X3,difference(X1,X2)) ) ),
    inference(fof_nnf,[status(thm)],[10]) ).

fof(47,plain,
    ! [X4,X5,X6] :
      ( ( ~ member(X6,difference(X4,X5))
        | ( member(X6,X4)
          & ~ member(X6,X5) ) )
      & ( ~ member(X6,X4)
        | member(X6,X5)
        | member(X6,difference(X4,X5)) ) ),
    inference(variable_rename,[status(thm)],[46]) ).

fof(48,plain,
    ! [X4,X5,X6] :
      ( ( member(X6,X4)
        | ~ member(X6,difference(X4,X5)) )
      & ( ~ member(X6,X5)
        | ~ member(X6,difference(X4,X5)) )
      & ( ~ member(X6,X4)
        | member(X6,X5)
        | member(X6,difference(X4,X5)) ) ),
    inference(distribute,[status(thm)],[47]) ).

cnf(49,plain,
    ( member(X1,difference(X2,X3))
    | member(X1,X3)
    | ~ member(X1,X2) ),
    inference(split_conjunct,[status(thm)],[48]) ).

cnf(50,plain,
    ( ~ member(X1,difference(X2,X3))
    | ~ member(X1,X3) ),
    inference(split_conjunct,[status(thm)],[48]) ).

cnf(51,plain,
    ( member(X1,X2)
    | ~ member(X1,difference(X2,X3)) ),
    inference(split_conjunct,[status(thm)],[48]) ).

cnf(62,plain,
    ( member(esk4_2(difference(X1,X2),X3),X1)
    | subset(difference(X1,X2),X3) ),
    inference(spm,[status(thm)],[51,35,theory(equality)]) ).

cnf(63,plain,
    ( subset(difference(X1,X2),X3)
    | ~ member(esk4_2(difference(X1,X2),X3),X2) ),
    inference(spm,[status(thm)],[50,35,theory(equality)]) ).

cnf(64,plain,
    ( subset(X1,union(X2,X3))
    | ~ member(esk4_2(X1,union(X2,X3)),X3) ),
    inference(spm,[status(thm)],[34,26,theory(equality)]) ).

cnf(65,plain,
    ( subset(X1,union(X2,X3))
    | ~ member(esk4_2(X1,union(X2,X3)),X2) ),
    inference(spm,[status(thm)],[34,27,theory(equality)]) ).

cnf(71,plain,
    ( subset(X1,difference(X2,X3))
    | member(esk4_2(X1,difference(X2,X3)),X3)
    | ~ member(esk4_2(X1,difference(X2,X3)),X2) ),
    inference(spm,[status(thm)],[34,49,theory(equality)]) ).

cnf(76,plain,
    ( member(esk4_2(union(X1,X2),X3),X2)
    | member(esk4_2(union(X1,X2),X3),X1)
    | subset(union(X1,X2),X3) ),
    inference(spm,[status(thm)],[28,35,theory(equality)]) ).

cnf(91,plain,
    subset(difference(X1,X2),X1),
    inference(spm,[status(thm)],[34,62,theory(equality)]) ).

cnf(92,plain,
    ( member(esk4_2(difference(union(X1,X2),X3),X4),X2)
    | member(esk4_2(difference(union(X1,X2),X3),X4),X1)
    | subset(difference(union(X1,X2),X3),X4) ),
    inference(spm,[status(thm)],[28,62,theory(equality)]) ).

cnf(93,plain,
    ( X1 = difference(X1,X2)
    | ~ subset(X1,difference(X1,X2)) ),
    inference(spm,[status(thm)],[16,91,theory(equality)]) ).

cnf(97,plain,
    ( subset(difference(X1,difference(X2,X3)),X4)
    | member(esk4_2(difference(X1,difference(X2,X3)),X4),X3)
    | ~ member(esk4_2(difference(X1,difference(X2,X3)),X4),X2) ),
    inference(spm,[status(thm)],[63,49,theory(equality)]) ).

cnf(98,plain,
    subset(difference(X1,X1),X2),
    inference(spm,[status(thm)],[63,62,theory(equality)]) ).

cnf(99,plain,
    ( X1 = difference(X2,X2)
    | ~ subset(X1,difference(X2,X2)) ),
    inference(spm,[status(thm)],[16,98,theory(equality)]) ).

cnf(100,plain,
    ( member(X1,X2)
    | ~ member(X1,difference(X3,X3)) ),
    inference(spm,[status(thm)],[36,98,theory(equality)]) ).

cnf(101,plain,
    difference(difference(X1,X1),X2) = difference(X1,X1),
    inference(spm,[status(thm)],[93,98,theory(equality)]) ).

cnf(106,plain,
    ( ~ member(X1,difference(X2,X2))
    | ~ member(X1,X3) ),
    inference(spm,[status(thm)],[50,101,theory(equality)]) ).

cnf(157,plain,
    ( subset(X1,union(X2,union(X3,X4)))
    | ~ member(esk4_2(X1,union(X2,union(X3,X4))),X4) ),
    inference(spm,[status(thm)],[64,26,theory(equality)]) ).

cnf(159,plain,
    subset(X1,union(X2,X1)),
    inference(spm,[status(thm)],[64,35,theory(equality)]) ).

cnf(160,plain,
    ( subset(X1,union(X2,difference(X3,X4)))
    | member(esk4_2(X1,union(X2,difference(X3,X4))),X4)
    | ~ member(esk4_2(X1,union(X2,difference(X3,X4))),X3) ),
    inference(spm,[status(thm)],[64,49,theory(equality)]) ).

cnf(162,plain,
    subset(X1,union(X1,X2)),
    inference(spm,[status(thm)],[159,12,theory(equality)]) ).

cnf(199,plain,
    ( subset(X1,union(union(X2,X3),X4))
    | ~ member(esk4_2(X1,union(union(X2,X3),X4)),X2) ),
    inference(spm,[status(thm)],[65,27,theory(equality)]) ).

cnf(201,plain,
    ( subset(X1,union(difference(X2,X3),X4))
    | member(esk4_2(X1,union(difference(X2,X3),X4)),X3)
    | ~ member(esk4_2(X1,union(difference(X2,X3),X4)),X2) ),
    inference(spm,[status(thm)],[65,49,theory(equality)]) ).

cnf(224,plain,
    ( member(esk4_2(X1,difference(union(X2,X3),X4)),X4)
    | subset(X1,difference(union(X2,X3),X4))
    | ~ member(esk4_2(X1,difference(union(X2,X3),X4)),X2) ),
    inference(spm,[status(thm)],[71,27,theory(equality)]) ).

cnf(225,plain,
    ( member(esk4_2(X1,difference(X1,X2)),X2)
    | subset(X1,difference(X1,X2)) ),
    inference(spm,[status(thm)],[71,35,theory(equality)]) ).

cnf(231,plain,
    ( member(esk4_2(X1,difference(X1,difference(X2,X3))),X2)
    | subset(X1,difference(X1,difference(X2,X3))) ),
    inference(spm,[status(thm)],[51,225,theory(equality)]) ).

cnf(232,plain,
    ( subset(X1,difference(X1,difference(X2,X3)))
    | ~ member(esk4_2(X1,difference(X1,difference(X2,X3))),X3) ),
    inference(spm,[status(thm)],[50,225,theory(equality)]) ).

cnf(238,plain,
    ~ member(X1,difference(X2,X2)),
    inference(csr,[status(thm)],[106,100]) ).

cnf(247,plain,
    subset(X1,difference(X1,difference(X2,X2))),
    inference(spm,[status(thm)],[238,225,theory(equality)]) ).

cnf(256,plain,
    ( difference(X1,difference(X2,X2)) = X1
    | ~ subset(difference(X1,difference(X2,X2)),X1) ),
    inference(spm,[status(thm)],[16,247,theory(equality)]) ).

cnf(266,plain,
    ( difference(X1,difference(X2,X2)) = X1
    | $false ),
    inference(rw,[status(thm)],[256,91,theory(equality)]) ).

cnf(267,plain,
    difference(X1,difference(X2,X2)) = X1,
    inference(cn,[status(thm)],[266,theory(equality)]) ).

cnf(317,plain,
    ( subset(union(X1,X2),union(X3,X1))
    | member(esk4_2(union(X1,X2),union(X3,X1)),X2) ),
    inference(spm,[status(thm)],[64,76,theory(equality)]) ).

cnf(319,plain,
    ( subset(union(X1,X2),union(X1,X3))
    | member(esk4_2(union(X1,X2),union(X1,X3)),X2) ),
    inference(spm,[status(thm)],[65,76,theory(equality)]) ).

cnf(320,plain,
    ( subset(union(X1,X2),union(X2,X3))
    | member(esk4_2(union(X1,X2),union(X2,X3)),X1) ),
    inference(spm,[status(thm)],[65,76,theory(equality)]) ).

cnf(1636,plain,
    ( subset(difference(union(X1,X2),X3),X1)
    | member(esk4_2(difference(union(X1,X2),X3),X1),X2) ),
    inference(spm,[status(thm)],[34,92,theory(equality)]) ).

cnf(1640,plain,
    ( subset(difference(union(X1,X2),X1),X3)
    | member(esk4_2(difference(union(X1,X2),X1),X3),X2) ),
    inference(spm,[status(thm)],[63,92,theory(equality)]) ).

cnf(2503,plain,
    ( member(esk4_2(difference(X1,difference(X1,X2)),X3),X2)
    | subset(difference(X1,difference(X1,X2)),X3) ),
    inference(spm,[status(thm)],[97,62,theory(equality)]) ).

cnf(4326,plain,
    ( member(esk4_2(X1,difference(union(X1,X2),X3)),X3)
    | subset(X1,difference(union(X1,X2),X3)) ),
    inference(spm,[status(thm)],[224,35,theory(equality)]) ).

cnf(4915,plain,
    subset(difference(X1,X2),difference(difference(X1,X2),difference(X2,X3))),
    inference(spm,[status(thm)],[63,231,theory(equality)]) ).

cnf(5042,plain,
    ( difference(difference(X1,X2),difference(X2,X3)) = difference(X1,X2)
    | ~ subset(difference(difference(X1,X2),difference(X2,X3)),difference(X1,X2)) ),
    inference(spm,[status(thm)],[16,4915,theory(equality)]) ).

cnf(5110,plain,
    ( difference(difference(X1,X2),difference(X2,X3)) = difference(X1,X2)
    | $false ),
    inference(rw,[status(thm)],[5042,91,theory(equality)]) ).

cnf(5111,plain,
    difference(difference(X1,X2),difference(X2,X3)) = difference(X1,X2),
    inference(cn,[status(thm)],[5110,theory(equality)]) ).

cnf(5224,plain,
    ( subset(difference(X1,X2),X4)
    | ~ member(esk4_2(difference(X1,X2),X4),difference(X2,X3)) ),
    inference(spm,[status(thm)],[63,5111,theory(equality)]) ).

cnf(5393,plain,
    subset(X1,difference(X1,difference(X2,X1))),
    inference(spm,[status(thm)],[232,35,theory(equality)]) ).

cnf(5395,plain,
    subset(difference(X1,X2),difference(difference(X1,X2),difference(X3,X1))),
    inference(spm,[status(thm)],[232,62,theory(equality)]) ).

cnf(5396,plain,
    ( subset(union(X1,X2),difference(union(X1,X2),difference(X3,X1)))
    | member(esk4_2(union(X1,X2),difference(union(X1,X2),difference(X3,X1))),X2) ),
    inference(spm,[status(thm)],[232,76,theory(equality)]) ).

cnf(5481,plain,
    ( difference(X1,difference(X2,X1)) = X1
    | ~ subset(difference(X1,difference(X2,X1)),X1) ),
    inference(spm,[status(thm)],[16,5393,theory(equality)]) ).

cnf(5514,plain,
    ( difference(X1,difference(X2,X1)) = X1
    | $false ),
    inference(rw,[status(thm)],[5481,91,theory(equality)]) ).

cnf(5515,plain,
    difference(X1,difference(X2,X1)) = X1,
    inference(cn,[status(thm)],[5514,theory(equality)]) ).

cnf(5586,plain,
    ( subset(X1,X3)
    | ~ member(esk4_2(X1,X3),difference(X2,X1)) ),
    inference(spm,[status(thm)],[63,5515,theory(equality)]) ).

cnf(6036,plain,
    ( difference(difference(X1,X2),difference(X3,X1)) = difference(X1,X2)
    | ~ subset(difference(difference(X1,X2),difference(X3,X1)),difference(X1,X2)) ),
    inference(spm,[status(thm)],[16,5395,theory(equality)]) ).

cnf(6109,plain,
    ( difference(difference(X1,X2),difference(X3,X1)) = difference(X1,X2)
    | $false ),
    inference(rw,[status(thm)],[6036,91,theory(equality)]) ).

cnf(6110,plain,
    difference(difference(X1,X2),difference(X3,X1)) = difference(X1,X2),
    inference(cn,[status(thm)],[6109,theory(equality)]) ).

cnf(6264,plain,
    ( subset(X1,difference(X1,difference(X2,X3)))
    | ~ member(esk4_2(X1,difference(X1,difference(X2,X3))),difference(X4,X2)) ),
    inference(spm,[status(thm)],[232,6110,theory(equality)]) ).

cnf(10983,plain,
    ( member(esk4_2(union(X1,X2),union(difference(X2,X3),X1)),X3)
    | subset(union(X1,X2),union(difference(X2,X3),X1)) ),
    inference(spm,[status(thm)],[201,317,theory(equality)]) ).

cnf(11462,plain,
    subset(union(X1,X2),union(X1,union(X3,X2))),
    inference(spm,[status(thm)],[157,319,theory(equality)]) ).

cnf(11464,plain,
    ( member(esk4_2(union(X1,X2),union(X1,difference(X2,X3))),X3)
    | subset(union(X1,X2),union(X1,difference(X2,X3))) ),
    inference(spm,[status(thm)],[160,319,theory(equality)]) ).

cnf(11682,plain,
    subset(union(X1,X2),union(X2,union(X3,X1))),
    inference(spm,[status(thm)],[157,320,theory(equality)]) ).

cnf(111991,plain,
    subset(difference(union(X1,X2),X2),X1),
    inference(spm,[status(thm)],[63,1636,theory(equality)]) ).

cnf(158825,plain,
    subset(difference(X1,difference(X1,X2)),X2),
    inference(spm,[status(thm)],[34,2503,theory(equality)]) ).

cnf(390926,plain,
    subset(difference(union(X1,difference(X1,X2)),X1),X3),
    inference(spm,[status(thm)],[5224,1640,theory(equality)]) ).

cnf(392170,plain,
    difference(union(X1,difference(X1,X2)),X1) = difference(X3,X3),
    inference(spm,[status(thm)],[99,390926,theory(equality)]) ).

cnf(392681,plain,
    subset(difference(union(X1,difference(X1,X2)),difference(X3,X3)),X1),
    inference(spm,[status(thm)],[158825,392170,theory(equality)]) ).

cnf(394379,plain,
    subset(union(X1,difference(X1,X2)),X1),
    inference(rw,[status(thm)],[392681,267,theory(equality)]) ).

cnf(395595,plain,
    ( X1 = union(X1,difference(X1,X2))
    | ~ subset(X1,union(X1,difference(X1,X2))) ),
    inference(spm,[status(thm)],[16,394379,theory(equality)]) ).

cnf(395749,plain,
    ( X1 = union(X1,difference(X1,X2))
    | $false ),
    inference(rw,[status(thm)],[395595,162,theory(equality)]) ).

cnf(395750,plain,
    X1 = union(X1,difference(X1,X2)),
    inference(cn,[status(thm)],[395749,theory(equality)]) ).

cnf(395827,plain,
    subset(union(X1,difference(X2,X3)),union(X1,X2)),
    inference(spm,[status(thm)],[11462,395750,theory(equality)]) ).

cnf(395831,plain,
    subset(union(difference(X1,X2),X3),union(X3,X1)),
    inference(spm,[status(thm)],[11682,395750,theory(equality)]) ).

cnf(428536,plain,
    subset(X1,difference(union(X1,X2),difference(X3,X1))),
    inference(spm,[status(thm)],[5586,4326,theory(equality)]) ).

cnf(494996,plain,
    subset(union(X1,difference(X2,X3)),difference(union(X1,difference(X2,X3)),difference(X3,X1))),
    inference(spm,[status(thm)],[6264,5396,theory(equality)]) ).

cnf(922417,plain,
    subset(union(X1,X2),union(difference(X2,X1),X1)),
    inference(spm,[status(thm)],[64,10983,theory(equality)]) ).

cnf(922420,plain,
    subset(union(union(X1,X2),X3),union(difference(X3,X2),union(X1,X2))),
    inference(spm,[status(thm)],[157,10983,theory(equality)]) ).

cnf(922896,plain,
    subset(union(X1,X2),union(X1,difference(X2,X1))),
    inference(rw,[status(thm)],[922417,12,theory(equality)]) ).

cnf(923240,plain,
    ( union(X1,difference(X2,X1)) = union(X1,X2)
    | ~ subset(union(X1,difference(X2,X1)),union(X1,X2)) ),
    inference(spm,[status(thm)],[16,922896,theory(equality)]) ).

cnf(923547,plain,
    ( union(X1,difference(X2,X1)) = union(X1,X2)
    | $false ),
    inference(rw,[status(thm)],[923240,395827,theory(equality)]) ).

cnf(923548,plain,
    union(X1,difference(X2,X1)) = union(X1,X2),
    inference(cn,[status(thm)],[923547,theory(equality)]) ).

cnf(923717,plain,
    subset(difference(union(X1,X2),difference(X2,X1)),X1),
    inference(spm,[status(thm)],[111991,923548,theory(equality)]) ).

cnf(983000,plain,
    subset(union(union(X1,X2),X3),union(union(X1,X2),difference(X3,X1))),
    inference(spm,[status(thm)],[199,11464,theory(equality)]) ).

cnf(1205321,plain,
    ( X1 = difference(union(X1,X2),difference(X2,X1))
    | ~ subset(X1,difference(union(X1,X2),difference(X2,X1))) ),
    inference(spm,[status(thm)],[16,923717,theory(equality)]) ).

cnf(1205631,plain,
    ( X1 = difference(union(X1,X2),difference(X2,X1))
    | $false ),
    inference(rw,[status(thm)],[1205321,428536,theory(equality)]) ).

cnf(1205632,plain,
    X1 = difference(union(X1,X2),difference(X2,X1)),
    inference(cn,[status(thm)],[1205631,theory(equality)]) ).

cnf(1205675,plain,
    difference(union(difference(X1,X2),X2),X2) = difference(X1,X2),
    inference(spm,[status(thm)],[1205632,5515,theory(equality)]) ).

cnf(1207321,plain,
    difference(union(X2,X1),X2) = difference(X1,X2),
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[1205675,12,theory(equality)]),923548,theory(equality)]) ).

cnf(1208673,plain,
    difference(union(X2,X1),X1) = difference(X2,X1),
    inference(spm,[status(thm)],[1207321,12,theory(equality)]) ).

cnf(1340743,plain,
    ( union(difference(X1,X2),union(X3,X2)) = union(union(X3,X2),X1)
    | ~ subset(union(difference(X1,X2),union(X3,X2)),union(union(X3,X2),X1)) ),
    inference(spm,[status(thm)],[16,922420,theory(equality)]) ).

cnf(1341082,plain,
    ( union(difference(X1,X2),union(X3,X2)) = union(union(X3,X2),X1)
    | $false ),
    inference(rw,[status(thm)],[1340743,395831,theory(equality)]) ).

cnf(1341083,plain,
    union(difference(X1,X2),union(X3,X2)) = union(union(X3,X2),X1),
    inference(cn,[status(thm)],[1341082,theory(equality)]) ).

cnf(1342479,plain,
    union(difference(X1,X2),union(X3,X2)) = union(union(X3,X2),union(X1,X2)),
    inference(spm,[status(thm)],[1341083,1208673,theory(equality)]) ).

cnf(1344883,plain,
    union(union(X3,X2),X1) = union(union(X3,X2),union(X1,X2)),
    inference(rw,[status(thm)],[1342479,1341083,theory(equality)]) ).

cnf(1383389,plain,
    ( union(union(X1,X2),difference(X3,X1)) = union(union(X1,X2),X3)
    | ~ subset(union(union(X1,X2),difference(X3,X1)),union(union(X1,X2),X3)) ),
    inference(spm,[status(thm)],[16,983000,theory(equality)]) ).

cnf(1383716,plain,
    ( union(union(X1,X2),difference(X3,X1)) = union(union(X1,X2),X3)
    | $false ),
    inference(rw,[status(thm)],[1383389,395827,theory(equality)]) ).

cnf(1383717,plain,
    union(union(X1,X2),difference(X3,X1)) = union(union(X1,X2),X3),
    inference(cn,[status(thm)],[1383716,theory(equality)]) ).

cnf(1946354,plain,
    union(union(X1,X2),X3) = union(union(X3,X2),union(X1,X2)),
    inference(spm,[status(thm)],[12,1344883,theory(equality)]) ).

cnf(1948819,plain,
    union(union(X1,X2),X3) = union(union(X3,X2),X1),
    inference(rw,[status(thm)],[1946354,1344883,theory(equality)]) ).

cnf(1953589,plain,
    union(union(X3,X2),X1) = union(X3,union(X1,X2)),
    inference(spm,[status(thm)],[12,1948819,theory(equality)]) ).

cnf(1957972,plain,
    union(union(X1,X2),X3) = union(X1,union(X3,difference(X2,X1))),
    inference(spm,[status(thm)],[1953589,923548,theory(equality)]) ).

cnf(1959229,plain,
    union(X1,union(difference(X3,X1),X2)) = union(union(X1,X2),X3),
    inference(rw,[status(thm)],[1383717,1953589,theory(equality)]) ).

cnf(1959230,plain,
    union(X1,union(difference(X3,X1),X2)) = union(X1,union(X3,X2)),
    inference(rw,[status(thm)],[1959229,1953589,theory(equality)]) ).

cnf(1960519,plain,
    union(X1,union(X3,X2)) = union(X1,union(X3,difference(X2,X1))),
    inference(rw,[status(thm)],[1957972,1953589,theory(equality)]) ).

cnf(1967277,plain,
    difference(union(X1,union(X2,X3)),X1) = difference(union(difference(X2,X1),X3),X1),
    inference(spm,[status(thm)],[1207321,1959230,theory(equality)]) ).

cnf(1968936,plain,
    difference(union(X2,X3),X1) = difference(union(difference(X2,X1),X3),X1),
    inference(rw,[status(thm)],[1967277,1207321,theory(equality)]) ).

cnf(1996826,plain,
    difference(union(X1,union(X2,X3)),X1) = difference(union(X2,difference(X3,X1)),X1),
    inference(spm,[status(thm)],[1207321,1960519,theory(equality)]) ).

cnf(1998270,plain,
    difference(union(X2,X3),X1) = difference(union(X2,difference(X3,X1)),X1),
    inference(rw,[status(thm)],[1996826,1207321,theory(equality)]) ).

cnf(2076834,plain,
    ( difference(union(X1,difference(X2,X3)),difference(X3,X1)) = union(X1,difference(X2,X3))
    | ~ subset(difference(union(X1,difference(X2,X3)),difference(X3,X1)),union(X1,difference(X2,X3))) ),
    inference(spm,[status(thm)],[16,494996,theory(equality)]) ).

cnf(2076993,plain,
    ( difference(union(X1,difference(X2,X3)),difference(X3,X1)) = union(X1,difference(X2,X3))
    | $false ),
    inference(rw,[status(thm)],[2076834,91,theory(equality)]) ).

cnf(2076994,plain,
    difference(union(X1,difference(X2,X3)),difference(X3,X1)) = union(X1,difference(X2,X3)),
    inference(cn,[status(thm)],[2076993,theory(equality)]) ).

cnf(2077010,plain,
    difference(union(difference(X1,X2),difference(X3,X2)),X2) = union(difference(X1,X2),difference(X3,X2)),
    inference(spm,[status(thm)],[2076994,5515,theory(equality)]) ).

cnf(2078223,plain,
    difference(union(X1,X3),X2) = union(difference(X1,X2),difference(X3,X2)),
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[2077010,1968936,theory(equality)]),1998270,theory(equality)]) ).

cnf(2081905,negated_conjecture,
    $false,
    inference(rw,[status(thm)],[22,2078223,theory(equality)]) ).

cnf(2081906,negated_conjecture,
    $false,
    inference(cn,[status(thm)],[2081905,theory(equality)]) ).

cnf(2081907,negated_conjecture,
    $false,
    2081906,
    [proof] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% % SZS status Started for /home/graph/tptp/TPTP/Problems/SET/SET615+3.p
% --creating new selector for []
% eprover: CPU time limit exceeded, terminating
% -running prover on /tmp/tmpYyBYm3/sel_SET615+3.p_1 with time limit 29
% -prover status ResourceOut
% -running prover on /tmp/tmpYyBYm3/sel_SET615+3.p_2 with time limit 81
% -prover status Theorem
% Problem SET615+3.p solved in phase 1.
% % SZS status Theorem for /home/graph/tptp/TPTP/Problems/SET/SET615+3.p
% % SZS status Ended for /home/graph/tptp/TPTP/Problems/SET/SET615+3.p
% Solved 1 out of 1.
% # Problem is unsatisfiable (or provable), constructing proof object
% # SZS status Theorem
% # SZS output start CNFRefutation.
% See solution above
% # SZS output end CNFRefutation
% 
%------------------------------------------------------------------------------