TSTP Solution File: SET881+1 by SInE---0.4

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%------------------------------------------------------------------------------
% File     : SInE---0.4
% Problem  : SET881+1 : TPTP v5.0.0. Released v3.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : Source/sine.py -e eprover -t %d %s

% Computer : art01.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 03:43:12 EST 2010

% Result   : Theorem 0.19s
% Output   : CNFRefutation 0.19s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   13
%            Number of leaves      :    4
% Syntax   : Number of formulae    :   27 (  15 unt;   0 def)
%            Number of atoms       :  112 (  76 equ)
%            Maximal formula atoms :   20 (   4 avg)
%            Number of connectives :  136 (  51   ~;  55   |;  27   &)
%                                         (   3 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   13 (   5 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :    3 (   1 usr;   1 prp; 0-2 aty)
%            Number of functors    :    7 (   7 usr;   3 con; 0-3 aty)
%            Number of variables   :   61 (   5 sgn  38   !;   6   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(1,axiom,
    ! [X1,X2] :
      ( set_difference(singleton(X1),X2) = empty_set
    <=> in(X1,X2) ),
    file('/tmp/tmpCesMYd/sel_SET881+1.p_1',l36_zfmisc_1) ).

fof(2,conjecture,
    ! [X1,X2] : set_difference(singleton(X1),unordered_pair(X1,X2)) = empty_set,
    file('/tmp/tmpCesMYd/sel_SET881+1.p_1',t22_zfmisc_1) ).

fof(4,axiom,
    ! [X1,X2] : unordered_pair(X1,X2) = unordered_pair(X2,X1),
    file('/tmp/tmpCesMYd/sel_SET881+1.p_1',commutativity_k2_tarski) ).

fof(7,axiom,
    ! [X1,X2,X3] :
      ( X3 = unordered_pair(X1,X2)
    <=> ! [X4] :
          ( in(X4,X3)
        <=> ( X4 = X1
            | X4 = X2 ) ) ),
    file('/tmp/tmpCesMYd/sel_SET881+1.p_1',d2_tarski) ).

fof(9,negated_conjecture,
    ~ ! [X1,X2] : set_difference(singleton(X1),unordered_pair(X1,X2)) = empty_set,
    inference(assume_negation,[status(cth)],[2]) ).

fof(12,plain,
    ! [X1,X2] :
      ( ( set_difference(singleton(X1),X2) != empty_set
        | in(X1,X2) )
      & ( ~ in(X1,X2)
        | set_difference(singleton(X1),X2) = empty_set ) ),
    inference(fof_nnf,[status(thm)],[1]) ).

fof(13,plain,
    ! [X3,X4] :
      ( ( set_difference(singleton(X3),X4) != empty_set
        | in(X3,X4) )
      & ( ~ in(X3,X4)
        | set_difference(singleton(X3),X4) = empty_set ) ),
    inference(variable_rename,[status(thm)],[12]) ).

cnf(14,plain,
    ( set_difference(singleton(X1),X2) = empty_set
    | ~ in(X1,X2) ),
    inference(split_conjunct,[status(thm)],[13]) ).

fof(16,negated_conjecture,
    ? [X1,X2] : set_difference(singleton(X1),unordered_pair(X1,X2)) != empty_set,
    inference(fof_nnf,[status(thm)],[9]) ).

fof(17,negated_conjecture,
    ? [X3,X4] : set_difference(singleton(X3),unordered_pair(X3,X4)) != empty_set,
    inference(variable_rename,[status(thm)],[16]) ).

fof(18,negated_conjecture,
    set_difference(singleton(esk1_0),unordered_pair(esk1_0,esk2_0)) != empty_set,
    inference(skolemize,[status(esa)],[17]) ).

cnf(19,negated_conjecture,
    set_difference(singleton(esk1_0),unordered_pair(esk1_0,esk2_0)) != empty_set,
    inference(split_conjunct,[status(thm)],[18]) ).

fof(23,plain,
    ! [X3,X4] : unordered_pair(X3,X4) = unordered_pair(X4,X3),
    inference(variable_rename,[status(thm)],[4]) ).

cnf(24,plain,
    unordered_pair(X1,X2) = unordered_pair(X2,X1),
    inference(split_conjunct,[status(thm)],[23]) ).

fof(31,plain,
    ! [X1,X2,X3] :
      ( ( X3 != unordered_pair(X1,X2)
        | ! [X4] :
            ( ( ~ in(X4,X3)
              | X4 = X1
              | X4 = X2 )
            & ( ( X4 != X1
                & X4 != X2 )
              | in(X4,X3) ) ) )
      & ( ? [X4] :
            ( ( ~ in(X4,X3)
              | ( X4 != X1
                & X4 != X2 ) )
            & ( in(X4,X3)
              | X4 = X1
              | X4 = X2 ) )
        | X3 = unordered_pair(X1,X2) ) ),
    inference(fof_nnf,[status(thm)],[7]) ).

fof(32,plain,
    ! [X5,X6,X7] :
      ( ( X7 != unordered_pair(X5,X6)
        | ! [X8] :
            ( ( ~ in(X8,X7)
              | X8 = X5
              | X8 = X6 )
            & ( ( X8 != X5
                & X8 != X6 )
              | in(X8,X7) ) ) )
      & ( ? [X9] :
            ( ( ~ in(X9,X7)
              | ( X9 != X5
                & X9 != X6 ) )
            & ( in(X9,X7)
              | X9 = X5
              | X9 = X6 ) )
        | X7 = unordered_pair(X5,X6) ) ),
    inference(variable_rename,[status(thm)],[31]) ).

fof(33,plain,
    ! [X5,X6,X7] :
      ( ( X7 != unordered_pair(X5,X6)
        | ! [X8] :
            ( ( ~ in(X8,X7)
              | X8 = X5
              | X8 = X6 )
            & ( ( X8 != X5
                & X8 != X6 )
              | in(X8,X7) ) ) )
      & ( ( ( ~ in(esk5_3(X5,X6,X7),X7)
            | ( esk5_3(X5,X6,X7) != X5
              & esk5_3(X5,X6,X7) != X6 ) )
          & ( in(esk5_3(X5,X6,X7),X7)
            | esk5_3(X5,X6,X7) = X5
            | esk5_3(X5,X6,X7) = X6 ) )
        | X7 = unordered_pair(X5,X6) ) ),
    inference(skolemize,[status(esa)],[32]) ).

fof(34,plain,
    ! [X5,X6,X7,X8] :
      ( ( ( ( ~ in(X8,X7)
            | X8 = X5
            | X8 = X6 )
          & ( ( X8 != X5
              & X8 != X6 )
            | in(X8,X7) ) )
        | X7 != unordered_pair(X5,X6) )
      & ( ( ( ~ in(esk5_3(X5,X6,X7),X7)
            | ( esk5_3(X5,X6,X7) != X5
              & esk5_3(X5,X6,X7) != X6 ) )
          & ( in(esk5_3(X5,X6,X7),X7)
            | esk5_3(X5,X6,X7) = X5
            | esk5_3(X5,X6,X7) = X6 ) )
        | X7 = unordered_pair(X5,X6) ) ),
    inference(shift_quantors,[status(thm)],[33]) ).

fof(35,plain,
    ! [X5,X6,X7,X8] :
      ( ( ~ in(X8,X7)
        | X8 = X5
        | X8 = X6
        | X7 != unordered_pair(X5,X6) )
      & ( X8 != X5
        | in(X8,X7)
        | X7 != unordered_pair(X5,X6) )
      & ( X8 != X6
        | in(X8,X7)
        | X7 != unordered_pair(X5,X6) )
      & ( esk5_3(X5,X6,X7) != X5
        | ~ in(esk5_3(X5,X6,X7),X7)
        | X7 = unordered_pair(X5,X6) )
      & ( esk5_3(X5,X6,X7) != X6
        | ~ in(esk5_3(X5,X6,X7),X7)
        | X7 = unordered_pair(X5,X6) )
      & ( in(esk5_3(X5,X6,X7),X7)
        | esk5_3(X5,X6,X7) = X5
        | esk5_3(X5,X6,X7) = X6
        | X7 = unordered_pair(X5,X6) ) ),
    inference(distribute,[status(thm)],[34]) ).

cnf(39,plain,
    ( in(X4,X1)
    | X1 != unordered_pair(X2,X3)
    | X4 != X3 ),
    inference(split_conjunct,[status(thm)],[35]) ).

cnf(43,plain,
    ( in(X1,X2)
    | unordered_pair(X3,X1) != X2 ),
    inference(er,[status(thm)],[39,theory(equality)]) ).

cnf(50,plain,
    in(X1,unordered_pair(X2,X1)),
    inference(er,[status(thm)],[43,theory(equality)]) ).

cnf(53,plain,
    in(X1,unordered_pair(X1,X2)),
    inference(spm,[status(thm)],[50,24,theory(equality)]) ).

cnf(59,plain,
    set_difference(singleton(X1),unordered_pair(X1,X2)) = empty_set,
    inference(spm,[status(thm)],[14,53,theory(equality)]) ).

cnf(78,negated_conjecture,
    $false,
    inference(rw,[status(thm)],[19,59,theory(equality)]) ).

cnf(79,negated_conjecture,
    $false,
    inference(cn,[status(thm)],[78,theory(equality)]) ).

cnf(80,negated_conjecture,
    $false,
    79,
    [proof] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% % SZS status Started for /home/graph/tptp/TPTP/Problems/SET/SET881+1.p
% --creating new selector for []
% -running prover on /tmp/tmpCesMYd/sel_SET881+1.p_1 with time limit 29
% -prover status Theorem
% Problem SET881+1.p solved in phase 0.
% % SZS status Theorem for /home/graph/tptp/TPTP/Problems/SET/SET881+1.p
% % SZS status Ended for /home/graph/tptp/TPTP/Problems/SET/SET881+1.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
% 
%------------------------------------------------------------------------------