TSTP Solution File: SET064-7 by Metis---2.4
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%------------------------------------------------------------------------------
% File : Metis---2.4
% Problem : SET064-7 : TPTP v8.1.0. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : metis --show proof --show saturation %s
% Computer : n009.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8042.1875MB
% OS : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit : 600s
% DateTime : Tue Jul 19 03:32:05 EDT 2022
% Result : Unsatisfiable 3.44s 3.65s
% Output : CNFRefutation 3.44s
% Verified :
% SZS Type : Refutation
% Derivation depth : 4
% Number of leaves : 4
% Syntax : Number of clauses : 9 ( 5 unt; 2 nHn; 8 RR)
% Number of literals : 13 ( 4 equ; 4 neg)
% Maximal clause size : 2 ( 1 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 5 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 3 ( 3 usr; 2 con; 0-2 aty)
% Number of variables : 3 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(not_subclass_members1,axiom,
( member(not_subclass_element(X,Y),X)
| subclass(X,Y) ) ).
cnf(corollary_of_null_class_is_subclass,axiom,
( ~ subclass(X,null_class)
| X = null_class ) ).
cnf(prove_null_class_is_unique_1,negated_conjecture,
z != null_class ).
cnf(prove_null_class_is_unique_2,negated_conjecture,
~ member(not_subclass_element(z,null_class),z) ).
cnf(refute_0_0,plain,
( ~ subclass(z,null_class)
| z = null_class ),
inference(subst,[],[corollary_of_null_class_is_subclass:[bind(X,$fot(z))]]) ).
cnf(refute_0_1,plain,
( member(not_subclass_element(z,null_class),z)
| subclass(z,null_class) ),
inference(subst,[],[not_subclass_members1:[bind(X,$fot(z)),bind(Y,$fot(null_class))]]) ).
cnf(refute_0_2,plain,
subclass(z,null_class),
inference(resolve,[$cnf( member(not_subclass_element(z,null_class),z) )],[refute_0_1,prove_null_class_is_unique_2]) ).
cnf(refute_0_3,plain,
z = null_class,
inference(resolve,[$cnf( subclass(z,null_class) )],[refute_0_2,refute_0_0]) ).
cnf(refute_0_4,plain,
$false,
inference(resolve,[$cnf( $equal(z,null_class) )],[refute_0_3,prove_null_class_is_unique_1]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.12 % Problem : SET064-7 : TPTP v8.1.0. Bugfixed v2.1.0.
% 0.06/0.13 % Command : metis --show proof --show saturation %s
% 0.12/0.33 % Computer : n009.cluster.edu
% 0.12/0.33 % Model : x86_64 x86_64
% 0.12/0.33 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.33 % Memory : 8042.1875MB
% 0.12/0.33 % OS : Linux 3.10.0-693.el7.x86_64
% 0.12/0.33 % CPULimit : 300
% 0.12/0.33 % WCLimit : 600
% 0.12/0.33 % DateTime : Sun Jul 10 03:08:37 EDT 2022
% 0.12/0.33 % CPUTime :
% 0.12/0.34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 3.44/3.65 % SZS status Unsatisfiable for /export/starexec/sandbox2/benchmark/theBenchmark.p
% 3.44/3.65
% 3.44/3.65 % SZS output start CNFRefutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 3.44/3.65
%------------------------------------------------------------------------------