TSTP Solution File: SET411-6 by Faust---1.0

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%------------------------------------------------------------------------------
% File     : Faust---1.0
% Problem  : SET411-6 : TPTP v3.4.2. Bugfixed v2.1.0.
% Transfm  : none
% Format   : tptp
% Command  : faust %s

% Computer : art05.cs.miami.edu
% Model    : i686 i686
% CPU      : Intel(R) Pentium(R) 4 CPU 2.80GHz @ 2793MHz
% Memory   : 1003MB
% OS       : Linux 2.6.17-1.2142_FC4
% CPULimit : 600s
% DateTime : Wed May  6 15:31:03 EDT 2009

% Result   : Unsatisfiable 2.4s
% Output   : Refutation 2.4s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    4
%            Number of leaves      :    7
% Syntax   : Number of formulae    :   19 (  12 unt;   0 def)
%            Number of atoms       :   28 (   0 equ)
%            Maximal formula atoms :    3 (   1 avg)
%            Number of connectives :   22 (  13   ~;   9   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    7 (   3 avg)
%            Maximal term depth    :    5 (   1 avg)
%            Number of predicates  :    4 (   2 usr;   1 prp; 0-2 aty)
%            Number of functors    :   10 (  10 usr;   6 con; 0-2 aty)
%            Number of variables   :   21 (   4 sgn   9   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Faust---1.0 format not known, defaulting to TPTP
fof(intersection2,plain,
    ! [A,B,C] :
      ( ~ member(A,intersection(B,C))
      | member(A,C) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),
    [] ).

cnf(166000512,plain,
    ( ~ member(A,intersection(B,C))
    | member(A,C) ),
    inference(rewrite,[status(thm)],[intersection2]),
    [] ).

fof(compose_can_define_singleton,plain,
    $equal(intersection(complement(compose(element_relation,complement(identity_relation))),element_relation),singleton_relation),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),
    [] ).

cnf(166897512,plain,
    $equal(intersection(complement(compose(element_relation,complement(identity_relation))),element_relation),singleton_relation),
    inference(rewrite,[status(thm)],[compose_can_define_singleton]),
    [] ).

cnf(204221328,plain,
    ( ~ member(A,singleton_relation)
    | member(A,element_relation) ),
    inference(paramodulation,[status(thm)],[166000512,166897512,theory(equality)]),
    [] ).

fof(prove_compose_condition_for_singleton_membership1_1,plain,
    member(ordered_pair(x,y),singleton_relation),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),
    [] ).

cnf(166983392,plain,
    member(ordered_pair(x,y),singleton_relation),
    inference(rewrite,[status(thm)],[prove_compose_condition_for_singleton_membership1_1]),
    [] ).

cnf(234271280,plain,
    member(ordered_pair(x,y),element_relation),
    inference(resolution,[status(thm)],[204221328,166983392]),
    [] ).

fof(element_relation2,plain,
    ! [A,B] :
      ( ~ member(ordered_pair(A,B),element_relation)
      | member(A,B) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),
    [] ).

cnf(165972736,plain,
    ( ~ member(ordered_pair(A,B),element_relation)
    | member(A,B) ),
    inference(rewrite,[status(thm)],[element_relation2]),
    [] ).

fof(class_elements_are_sets,plain,
    ! [A] : subclass(A,universal_class),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),
    [] ).

cnf(165832032,plain,
    subclass(A,universal_class),
    inference(rewrite,[status(thm)],[class_elements_are_sets]),
    [] ).

fof(subclass_members,plain,
    ! [A,B,C] :
      ( ~ subclass(A,B)
      | ~ member(C,A)
      | member(C,B) ),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),
    [] ).

cnf(165801000,plain,
    ( ~ subclass(A,B)
    | ~ member(C,A)
    | member(C,B) ),
    inference(rewrite,[status(thm)],[subclass_members]),
    [] ).

fof(prove_compose_condition_for_singleton_membership1_2,plain,
    ~ member(x,universal_class),
    file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),
    [] ).

cnf(166988080,plain,
    ~ member(x,universal_class),
    inference(rewrite,[status(thm)],[prove_compose_condition_for_singleton_membership1_2]),
    [] ).

cnf(178601632,plain,
    ~ member(x,A),
    inference(forward_subsumption_resolution__resolution,[status(thm)],[165832032,165801000,166988080]),
    [] ).

cnf(178716032,plain,
    ~ member(ordered_pair(x,A),element_relation),
    inference(resolution,[status(thm)],[165972736,178601632]),
    [] ).

cnf(contradiction,plain,
    $false,
    inference(resolution,[status(thm)],[234271280,178716032]),
    [] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% Proof found in: 2 seconds
% START OF PROOF SEQUENCE
% fof(intersection2,plain,(~member(A,intersection(B,C))|member(A,C)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),[]).
% 
% cnf(166000512,plain,(~member(A,intersection(B,C))|member(A,C)),inference(rewrite,[status(thm)],[intersection2]),[]).
% 
% fof(compose_can_define_singleton,plain,($equal(intersection(complement(compose(element_relation,complement(identity_relation))),element_relation),singleton_relation)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),[]).
% 
% cnf(166897512,plain,($equal(intersection(complement(compose(element_relation,complement(identity_relation))),element_relation),singleton_relation)),inference(rewrite,[status(thm)],[compose_can_define_singleton]),[]).
% 
% cnf(204221328,plain,(~member(A,singleton_relation)|member(A,element_relation)),inference(paramodulation,[status(thm)],[166000512,166897512,theory(equality)]),[]).
% 
% fof(prove_compose_condition_for_singleton_membership1_1,plain,(member(ordered_pair(x,y),singleton_relation)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),[]).
% 
% cnf(166983392,plain,(member(ordered_pair(x,y),singleton_relation)),inference(rewrite,[status(thm)],[prove_compose_condition_for_singleton_membership1_1]),[]).
% 
% cnf(234271280,plain,(member(ordered_pair(x,y),element_relation)),inference(resolution,[status(thm)],[204221328,166983392]),[]).
% 
% fof(element_relation2,plain,(~member(ordered_pair(A,B),element_relation)|member(A,B)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),[]).
% 
% cnf(165972736,plain,(~member(ordered_pair(A,B),element_relation)|member(A,B)),inference(rewrite,[status(thm)],[element_relation2]),[]).
% 
% fof(class_elements_are_sets,plain,(subclass(A,universal_class)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),[]).
% 
% cnf(165832032,plain,(subclass(A,universal_class)),inference(rewrite,[status(thm)],[class_elements_are_sets]),[]).
% 
% fof(subclass_members,plain,(~subclass(A,B)|~member(C,A)|member(C,B)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),[]).
% 
% cnf(165801000,plain,(~subclass(A,B)|~member(C,A)|member(C,B)),inference(rewrite,[status(thm)],[subclass_members]),[]).
% 
% fof(prove_compose_condition_for_singleton_membership1_2,plain,(~member(x,universal_class)),file('/home/graph/tptp/TSTP/PreparedTPTP/tptp---none/SET/SET411-6.tptp',unknown),[]).
% 
% cnf(166988080,plain,(~member(x,universal_class)),inference(rewrite,[status(thm)],[prove_compose_condition_for_singleton_membership1_2]),[]).
% 
% cnf(178601632,plain,(~member(x,A)),inference(forward_subsumption_resolution__resolution,[status(thm)],[165832032,165801000,166988080]),[]).
% 
% cnf(178716032,plain,(~member(ordered_pair(x,A),element_relation)),inference(resolution,[status(thm)],[165972736,178601632]),[]).
% 
% cnf(contradiction,plain,$false,inference(resolution,[status(thm)],[234271280,178716032]),[]).
% 
% END OF PROOF SEQUENCE
% 
%------------------------------------------------------------------------------