TSTP Solution File: SET094-7 by Metis---2.4
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%------------------------------------------------------------------------------
% File : Metis---2.4
% Problem : SET094-7 : TPTP v8.1.0. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : metis --show proof --show saturation %s
% Computer : n021.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 03:32:32 EDT 2022
% Result : Unsatisfiable 2.62s 2.78s
% Output : CNFRefutation 2.62s
% Verified :
% SZS Type : Refutation
% Derivation depth : 5
% Number of leaves : 7
% Syntax : Number of clauses : 16 ( 7 unt; 0 nHn; 15 RR)
% Number of literals : 27 ( 17 equ; 13 neg)
% Maximal clause size : 3 ( 1 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 4 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 4 ( 4 usr; 2 con; 0-1 aty)
% Number of variables : 11 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(only_member_in_singleton,axiom,
( ~ member(Y,singleton(X))
| Y = X ) ).
cnf(prove_property_of_singletons1_1,negated_conjecture,
singleton(member_of(x)) = x ).
cnf(prove_property_of_singletons1_2,negated_conjecture,
member(y,x) ).
cnf(prove_property_of_singletons1_3,negated_conjecture,
member_of(x) != y ).
cnf(refute_0_0,plain,
( ~ member(X_316,singleton(member_of(x)))
| X_316 = member_of(x) ),
inference(subst,[],[only_member_in_singleton:[bind(X,$fot(member_of(x))),bind(Y,$fot(X_316))]]) ).
cnf(refute_0_1,plain,
( singleton(member_of(x)) != x
| ~ member(X_316,x)
| member(X_316,singleton(member_of(x))) ),
introduced(tautology,[equality,[$cnf( ~ member(X_316,singleton(member_of(x))) ),[1],$fot(x)]]) ).
cnf(refute_0_2,plain,
( ~ member(X_316,x)
| member(X_316,singleton(member_of(x))) ),
inference(resolve,[$cnf( $equal(singleton(member_of(x)),x) )],[prove_property_of_singletons1_1,refute_0_1]) ).
cnf(refute_0_3,plain,
( ~ member(X_316,x)
| X_316 = member_of(x) ),
inference(resolve,[$cnf( member(X_316,singleton(member_of(x))) )],[refute_0_2,refute_0_0]) ).
cnf(refute_0_4,plain,
( ~ member(y,x)
| y = member_of(x) ),
inference(subst,[],[refute_0_3:[bind(X_316,$fot(y))]]) ).
cnf(refute_0_5,plain,
y = member_of(x),
inference(resolve,[$cnf( member(y,x) )],[prove_property_of_singletons1_2,refute_0_4]) ).
cnf(refute_0_6,plain,
X0 = X0,
introduced(tautology,[refl,[$fot(X0)]]) ).
cnf(refute_0_7,plain,
( X0 != X0
| X0 != Y0
| Y0 = X0 ),
introduced(tautology,[equality,[$cnf( $equal(X0,X0) ),[0],$fot(Y0)]]) ).
cnf(refute_0_8,plain,
( X0 != Y0
| Y0 = X0 ),
inference(resolve,[$cnf( $equal(X0,X0) )],[refute_0_6,refute_0_7]) ).
cnf(refute_0_9,plain,
( y != member_of(x)
| member_of(x) = y ),
inference(subst,[],[refute_0_8:[bind(X0,$fot(y)),bind(Y0,$fot(member_of(x)))]]) ).
cnf(refute_0_10,plain,
y != member_of(x),
inference(resolve,[$cnf( $equal(member_of(x),y) )],[refute_0_9,prove_property_of_singletons1_3]) ).
cnf(refute_0_11,plain,
$false,
inference(resolve,[$cnf( $equal(y,member_of(x)) )],[refute_0_5,refute_0_10]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.12 % Problem : SET094-7 : TPTP v8.1.0. Bugfixed v2.1.0.
% 0.11/0.12 % Command : metis --show proof --show saturation %s
% 0.12/0.33 % Computer : n021.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 : Sat Jul 9 18:10:06 EDT 2022
% 0.12/0.33 % CPUTime :
% 0.12/0.34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 2.62/2.78 % SZS status Unsatisfiable for /export/starexec/sandbox2/benchmark/theBenchmark.p
% 2.62/2.78
% 2.62/2.78 % SZS output start CNFRefutation for /export/starexec/sandbox2/benchmark/theBenchmark.p
% See solution above
% 2.62/2.78
%------------------------------------------------------------------------------