%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : SET134-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n003.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Sun Sep 27 08:32:08 AM UTC 2026
% Result : Unsatisfiable 3.90s 13.89s
% Output : CNFRefutation 3.90s
% Verified :
% SZS Type : Refutation
% Derivation depth : 26
% Number of leaves : 21
% Syntax : Number of clauses : 112 ( 62 unt; 23 nHn; 43 RR)
% Number of literals : 175 ( 62 equ; 46 neg)
% Maximal clause size : 3 ( 1 avg)
% Maximal term depth : 6 ( 2 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 17 ( 17 usr; 5 con; 0-3 aty)
% Number of variables : 180 ( 28 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(definition_of_set_builder,axiom,
union(singleton(X0),X1) = 'set$ubuilder'(X0,X1) ).
cnf(prove_corollary_2_to_member_of_triple_1,negated_conjecture,
member(u,'universal$uclass') ).
cnf(prove_corollary_2_to_member_of_triple_2,negated_conjecture,
'set$ubuilder'(u,'set$ubuilder'(y,'set$ubuilder'(z,'null$uclass'))) = 'null$uclass' ).
cnf(subclass_members,axiom,
( member(X2,X1)
| ~ member(X2,X0)
| ~ subclass(X0,X1) ) ).
cnf(not_subclass_members1,axiom,
( subclass(X0,X1)
| member('not$usubclass$uelement'(X0,X1),X0) ) ).
cnf(not_subclass_members2,axiom,
( subclass(X0,X1)
| ~ member('not$usubclass$uelement'(X0,X1),X1) ) ).
cnf(class_elements_are_sets,axiom,
subclass(X0,'universal$uclass') ).
cnf(subclass_implies_equal,axiom,
( X0 = X1
| ~ subclass(X1,X0)
| ~ subclass(X0,X1) ) ).
cnf(unordered_pair3,axiom,
( member(X0,'unordered$upair'(X1,X0))
| ~ member(X0,'universal$uclass') ) ).
cnf(singleton_set,axiom,
'unordered$upair'(X0,X0) = singleton(X0) ).
cnf(intersection1,axiom,
( member(X0,X1)
| ~ member(X0,intersection(X1,X2)) ) ).
cnf(intersection2,axiom,
( member(X0,X2)
| ~ member(X0,intersection(X1,X2)) ) ).
cnf(intersection3,axiom,
( member(X0,intersection(X1,X2))
| ~ member(X0,X2)
| ~ member(X0,X1) ) ).
cnf(complement1,axiom,
( ~ member(X0,X1)
| ~ member(X0,complement(X1)) ) ).
cnf(complement2,axiom,
( member(X0,X1)
| member(X0,complement(X1))
| ~ member(X0,'universal$uclass') ) ).
cnf(union,axiom,
complement(intersection(complement(X0),complement(X1))) = union(X0,X1) ).
cnf(symmetric_difference,axiom,
intersection(complement(intersection(X0,X1)),complement(intersection(complement(X0),complement(X1)))) = 'symmetric$udifference'(X0,X1) ).
cnf(restriction1,axiom,
intersection(X0,'cross$uproduct'(X1,X2)) = restrict(X0,X1,X2) ).
cnf(domain1,axiom,
( ~ member(X1,'domain$uof'(X0))
| restrict(X0,singleton(X1),'universal$uclass') != 'null$uclass' ) ).
cnf(regularity1,axiom,
( member(regular(X0),X0)
| X0 = 'null$uclass' ) ).
cnf(regularity2,axiom,
( intersection(X0,regular(X0)) = 'null$uclass'
| X0 = 'null$uclass' ) ).
cnf(c0,plain,
union(singleton(X0),X1) = 'set$ubuilder'(X0,X1),
inference(clausification,[status(esa)],[definition_of_set_builder]) ).
cnf(c1,plain,
member(u,'universal$uclass'),
inference(clausification,[status(esa)],[prove_corollary_2_to_member_of_triple_1]) ).
cnf(c2,plain,
'set$ubuilder'(u,'set$ubuilder'(y,'set$ubuilder'(z,'null$uclass'))) = 'null$uclass',
inference(clausification,[status(esa)],[prove_corollary_2_to_member_of_triple_2]) ).
cnf(c3,plain,
( member(X2,X1)
| ~ member(X2,X0)
| ~ subclass(X0,X1) ),
inference(clausification,[status(esa)],[subclass_members]) ).
cnf(c4,plain,
( subclass(X0,X1)
| member('not$usubclass$uelement'(X0,X1),X0) ),
inference(clausification,[status(esa)],[not_subclass_members1]) ).
cnf(c5,plain,
( subclass(X0,X1)
| ~ member('not$usubclass$uelement'(X0,X1),X1) ),
inference(clausification,[status(esa)],[not_subclass_members2]) ).
cnf(c6,plain,
subclass(X0,'universal$uclass'),
inference(clausification,[status(esa)],[class_elements_are_sets]) ).
cnf(c9,plain,
( X0 = X1
| ~ subclass(X1,X0)
| ~ subclass(X0,X1) ),
inference(clausification,[status(esa)],[subclass_implies_equal]) ).
cnf(c12,plain,
( member(X0,'unordered$upair'(X1,X0))
| ~ member(X0,'universal$uclass') ),
inference(clausification,[status(esa)],[unordered_pair3]) ).
cnf(c14,plain,
'unordered$upair'(X0,X0) = singleton(X0),
inference(clausification,[status(esa)],[singleton_set]) ).
cnf(c23,plain,
( member(X0,X1)
| ~ member(X0,intersection(X1,X2)) ),
inference(clausification,[status(esa)],[intersection1]) ).
cnf(c24,plain,
( member(X0,X2)
| ~ member(X0,intersection(X1,X2)) ),
inference(clausification,[status(esa)],[intersection2]) ).
cnf(c25,plain,
( member(X0,intersection(X1,X2))
| ~ member(X0,X2)
| ~ member(X0,X1) ),
inference(clausification,[status(esa)],[intersection3]) ).
cnf(c26,plain,
( ~ member(X0,X1)
| ~ member(X0,complement(X1)) ),
inference(clausification,[status(esa)],[complement1]) ).
cnf(c27,plain,
( member(X0,X1)
| member(X0,complement(X1))
| ~ member(X0,'universal$uclass') ),
inference(clausification,[status(esa)],[complement2]) ).
cnf(c28,plain,
complement(intersection(complement(X0),complement(X1))) = union(X0,X1),
inference(clausification,[status(esa)],[union]) ).
cnf(c29,plain,
intersection(complement(intersection(X0,X1)),complement(intersection(complement(X0),complement(X1)))) = 'symmetric$udifference'(X0,X1),
inference(clausification,[status(esa)],[symmetric_difference]) ).
cnf(c30,plain,
intersection(X0,'cross$uproduct'(X1,X2)) = restrict(X0,X1,X2),
inference(clausification,[status(esa)],[restriction1]) ).
cnf(c32,plain,
( ~ member(X1,'domain$uof'(X0))
| restrict(X0,singleton(X1),'universal$uclass') != 'null$uclass' ),
inference(clausification,[status(esa)],[domain1]) ).
cnf(c68,plain,
( member(regular(X0),X0)
| X0 = 'null$uclass' ),
inference(clausification,[status(esa)],[regularity1]) ).
cnf(c69,plain,
( intersection(X0,regular(X0)) = 'null$uclass'
| X0 = 'null$uclass' ),
inference(clausification,[status(esa)],[regularity2]) ).
cnf(d0,plain,
( ~ member(X0,'universal$uclass')
| member(X0,singleton(X0)) ),
inference(superposition,[status(thm)],[c14,c12]) ).
cnf(d1,plain,
( subclass(intersection(X0,X1),X2)
| member('not$usubclass$uelement'(intersection(X0,X1),X2),X0) ),
inference(resolution,[status(thm)],[c23,c4]) ).
cnf(d2,plain,
( subclass(intersection(X0,X1),X0)
| subclass(intersection(X0,X1),X0) ),
inference(resolution,[status(thm)],[d1,c5]) ).
cnf(d3,plain,
( X0 = 'null$uclass'
| subclass('null$uclass',X0) ),
inference(superposition,[status(thm)],[c69,d2]) ).
cnf(d4,plain,
( ~ subclass(X0,'null$uclass')
| X0 = 'null$uclass'
| X0 = 'null$uclass' ),
inference(resolution,[status(thm)],[d3,c9]) ).
cnf(d5,plain,
( ~ member(X0,X1)
| member(X0,'universal$uclass') ),
inference(resolution,[status(thm)],[c3,c6]) ).
cnf(d6,plain,
( subclass(X0,X1)
| member('not$usubclass$uelement'(X0,X1),'universal$uclass') ),
inference(resolution,[status(thm)],[d5,c4]) ).
cnf(d7,plain,
( subclass(X0,complement(X1))
| ~ member('not$usubclass$uelement'(X0,complement(X1)),'universal$uclass')
| member('not$usubclass$uelement'(X0,complement(X1)),X1) ),
inference(resolution,[status(thm)],[c27,c5]) ).
cnf(d8,plain,
( subclass(X0,complement(X1))
| subclass(X0,complement(X1))
| member('not$usubclass$uelement'(X0,complement(X1)),X1) ),
inference(resolution,[status(thm)],[d7,d6]) ).
cnf(d9,plain,
( ~ member('not$usubclass$uelement'(X0,complement(complement(X1))),X1)
| subclass(X0,complement(complement(X1))) ),
inference(resolution,[status(thm)],[d8,c26]) ).
cnf(d10,plain,
( subclass(X0,complement(complement(X0)))
| subclass(X0,complement(complement(X0))) ),
inference(resolution,[status(thm)],[d9,c4]) ).
cnf(d11,plain,
intersection('null$uclass',X0) = 'null$uclass',
inference(resolution,[status(thm)],[d4,d2]) ).
cnf(d12,plain,
( ~ subclass(X0,intersection(X0,X1))
| X0 = intersection(X0,X1) ),
inference(resolution,[status(thm)],[d2,c9]) ).
cnf(d13,plain,
( subclass(X0,intersection(X1,X2))
| ~ member('not$usubclass$uelement'(X0,intersection(X1,X2)),X2)
| ~ member('not$usubclass$uelement'(X0,intersection(X1,X2)),X1) ),
inference(resolution,[status(thm)],[c25,c5]) ).
cnf(d14,plain,
( subclass(X0,intersection(X0,X1))
| subclass(X0,intersection(X0,X1))
| ~ member('not$usubclass$uelement'(X0,intersection(X0,X1)),X1) ),
inference(resolution,[status(thm)],[d13,c4]) ).
cnf(d15,plain,
( subclass(X0,intersection(X0,'universal$uclass'))
| subclass(X0,intersection(X0,'universal$uclass')) ),
inference(resolution,[status(thm)],[d14,d6]) ).
cnf(d16,plain,
X0 = intersection(X0,'universal$uclass'),
inference(resolution,[status(thm)],[d15,d12]) ).
cnf(d17,plain,
( ~ subclass('universal$uclass',X0)
| 'universal$uclass' = X0 ),
inference(resolution,[status(thm)],[c9,c6]) ).
cnf(d18,plain,
subclass(restrict(X0,X1,X2),X0),
inference(superposition,[status(thm)],[c30,d2]) ).
cnf(d19,plain,
restrict('null$uclass',X0,X1) = 'null$uclass',
inference(resolution,[status(thm)],[d4,d18]) ).
cnf(d20,plain,
( ~ member(X0,'domain$uof'('null$uclass'))
| 'null$uclass' != 'null$uclass' ),
inference(superposition,[status(thm)],[d19,c32]) ).
cnf(d21,plain,
~ member(X0,'domain$uof'('null$uclass')),
inference(equality_resolution,[status(thm)],[d20]) ).
cnf(d22,plain,
'domain$uof'('null$uclass') = 'null$uclass',
inference(resolution,[status(thm)],[d21,c68]) ).
cnf(d23,plain,
~ member(X0,'null$uclass'),
inference(demodulation,[status(thm)],[d21,d22]) ).
cnf(d24,plain,
subclass(X0,complement('null$uclass')),
inference(resolution,[status(thm)],[d8,d23]) ).
cnf(d25,plain,
'universal$uclass' = complement('null$uclass'),
inference(resolution,[status(thm)],[d24,d17]) ).
cnf(d26,plain,
( subclass(complement(X0),X1)
| ~ member('not$usubclass$uelement'(complement(X0),X1),X0) ),
inference(resolution,[status(thm)],[c26,c4]) ).
cnf(d27,plain,
( subclass(complement('universal$uclass'),X0)
| subclass(complement('universal$uclass'),X0) ),
inference(resolution,[status(thm)],[d26,d6]) ).
cnf(d28,plain,
complement('universal$uclass') = 'null$uclass',
inference(resolution,[status(thm)],[d4,d27]) ).
cnf(d29,plain,
complement(intersection('null$uclass',complement(X0))) = union('universal$uclass',X0),
inference(superposition,[status(thm)],[d28,c28]) ).
cnf(d30,plain,
complement('null$uclass') = union('universal$uclass',X0),
inference(demodulation,[status(thm)],[d29,d11]) ).
cnf(d31,plain,
'universal$uclass' = union('universal$uclass',X0),
inference(demodulation,[status(thm)],[d30,d25]) ).
cnf(d32,plain,
complement(intersection(complement(X2),union(X0,X1))) = union(X2,intersection(complement(X0),complement(X1))),
inference(superposition,[status(thm)],[c28,c28]) ).
cnf(d33,plain,
complement(intersection(complement(X0),union('universal$uclass',X1))) = union(X0,intersection('null$uclass',complement(X1))),
inference(superposition,[status(thm)],[d28,d32]) ).
cnf(d34,plain,
complement(intersection(complement(X1),'universal$uclass')) = union(X1,intersection('null$uclass',complement(X0))),
inference(demodulation,[status(thm)],[d33,d31]) ).
cnf(d35,plain,
complement(complement(X0)) = union(X0,intersection('null$uclass',complement(X1))),
inference(demodulation,[status(thm)],[d34,d16]) ).
cnf(d36,plain,
complement(complement(X1)) = union(X1,'null$uclass'),
inference(demodulation,[status(thm)],[d35,d11]) ).
cnf(d37,plain,
complement(complement(singleton(X0))) = 'set$ubuilder'(X0,'null$uclass'),
inference(superposition,[status(thm)],[d36,c0]) ).
cnf(d38,plain,
subclass(singleton(X0),'set$ubuilder'(X0,'null$uclass')),
inference(superposition,[status(thm)],[d37,d10]) ).
cnf(d39,plain,
( member('not$usubclass$uelement'(X0,complement(intersection(X1,X2))),X1)
| subclass(X0,complement(intersection(X1,X2))) ),
inference(resolution,[status(thm)],[d8,c23]) ).
cnf(d40,plain,
( subclass(complement(X0),complement(intersection(X0,X1)))
| subclass(complement(X0),complement(intersection(X0,X1))) ),
inference(resolution,[status(thm)],[d39,d26]) ).
cnf(d41,plain,
( subclass(intersection(X0,X1),X2)
| member('not$usubclass$uelement'(intersection(X0,X1),X2),X1) ),
inference(resolution,[status(thm)],[c24,c4]) ).
cnf(d42,plain,
( subclass(intersection(X0,X1),X1)
| subclass(intersection(X0,X1),X1) ),
inference(resolution,[status(thm)],[d41,c5]) ).
cnf(d43,plain,
intersection(X0,'null$uclass') = 'null$uclass',
inference(resolution,[status(thm)],[d4,d42]) ).
cnf(d44,plain,
complement(intersection(complement(X0),'null$uclass')) = union(X0,'universal$uclass'),
inference(superposition,[status(thm)],[d28,c28]) ).
cnf(d45,plain,
complement('null$uclass') = union(X0,'universal$uclass'),
inference(demodulation,[status(thm)],[d44,d43]) ).
cnf(d46,plain,
'universal$uclass' = union(X0,'universal$uclass'),
inference(demodulation,[status(thm)],[d45,d25]) ).
cnf(d47,plain,
intersection(complement(intersection(X0,X1)),union(X0,X1)) = 'symmetric$udifference'(X0,X1),
inference(demodulation,[status(thm)],[c29,c28]) ).
cnf(d48,plain,
intersection(complement(X0),union(X0,'universal$uclass')) = 'symmetric$udifference'(X0,'universal$uclass'),
inference(superposition,[status(thm)],[d16,d47]) ).
cnf(d49,plain,
intersection(complement(X0),'universal$uclass') = 'symmetric$udifference'(X0,'universal$uclass'),
inference(demodulation,[status(thm)],[d48,d46]) ).
cnf(d50,plain,
complement(X0) = 'symmetric$udifference'(X0,'universal$uclass'),
inference(demodulation,[status(thm)],[d49,d16]) ).
cnf(d51,plain,
complement(intersection(union(X0,X1),complement(X2))) = union(intersection(complement(X0),complement(X1)),X2),
inference(superposition,[status(thm)],[c28,c28]) ).
cnf(d52,plain,
intersection(complement(intersection(intersection(complement(X0),complement(X1)),X2)),complement(intersection(union(X0,X1),complement(X2)))) = 'symmetric$udifference'(intersection(complement(X0),complement(X1)),X2),
inference(superposition,[status(thm)],[d51,d47]) ).
cnf(d53,plain,
intersection(complement(intersection(complement(X0),complement(X1))),complement(intersection(union(X0,X1),complement('universal$uclass')))) = 'symmetric$udifference'(intersection(complement(X0),complement(X1)),'universal$uclass'),
inference(superposition,[status(thm)],[d16,d52]) ).
cnf(d54,plain,
intersection(union(X0,X1),complement(intersection(union(X0,X1),complement('universal$uclass')))) = 'symmetric$udifference'(intersection(complement(X0),complement(X1)),'universal$uclass'),
inference(demodulation,[status(thm)],[d53,c28]) ).
cnf(d55,plain,
intersection(union(X0,X1),complement(intersection(union(X0,X1),'null$uclass'))) = 'symmetric$udifference'(intersection(complement(X0),complement(X1)),'universal$uclass'),
inference(demodulation,[status(thm)],[d54,d28]) ).
cnf(d56,plain,
intersection(union(X0,X1),complement('null$uclass')) = 'symmetric$udifference'(intersection(complement(X0),complement(X1)),'universal$uclass'),
inference(demodulation,[status(thm)],[d55,d43]) ).
cnf(d57,plain,
intersection(union(X0,X1),'universal$uclass') = 'symmetric$udifference'(intersection(complement(X0),complement(X1)),'universal$uclass'),
inference(demodulation,[status(thm)],[d56,d25]) ).
cnf(d58,plain,
union(X0,X1) = 'symmetric$udifference'(intersection(complement(X0),complement(X1)),'universal$uclass'),
inference(demodulation,[status(thm)],[d57,d16]) ).
cnf(d59,plain,
union(X0,X1) = complement(intersection(complement(X0),complement(X1))),
inference(demodulation,[status(thm)],[d58,d50]) ).
cnf(d60,plain,
subclass(complement(complement(X0)),union(X0,X1)),
inference(superposition,[status(thm)],[d59,d40]) ).
cnf(d61,plain,
subclass('set$ubuilder'(X0,'null$uclass'),union(singleton(X0),X1)),
inference(superposition,[status(thm)],[d37,d60]) ).
cnf(d62,plain,
subclass('set$ubuilder'(X0,'null$uclass'),'set$ubuilder'(X0,X1)),
inference(demodulation,[status(thm)],[d61,c0]) ).
cnf(d63,plain,
subclass('set$ubuilder'(u,'null$uclass'),'null$uclass'),
inference(superposition,[status(thm)],[c2,d62]) ).
cnf(d64,plain,
'set$ubuilder'(u,'null$uclass') = 'null$uclass',
inference(resolution,[status(thm)],[d63,d4]) ).
cnf(d65,plain,
subclass(singleton(u),'null$uclass'),
inference(superposition,[status(thm)],[d64,d38]) ).
cnf(d66,plain,
singleton(u) = 'null$uclass',
inference(resolution,[status(thm)],[d65,d4]) ).
cnf(d67,plain,
( ~ member(u,'universal$uclass')
| member(u,'null$uclass') ),
inference(superposition,[status(thm)],[d66,d0]) ).
cnf(d68,plain,
member(u,'null$uclass'),
inference(resolution,[status(thm)],[c1,d67]) ).
cnf(d69,plain,
$false,
inference(resolution,[status(thm)],[d23,d68]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : SET134-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.07 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.17/0.56 % Computer : n003.cluster.edu
% 0.17/0.56 % Model : x86_64 x86_64
% 0.17/0.56 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.17/0.56 % Memory : 8046.5625MB
% 0.17/0.56 % OS : Linux 6.8.0-71-generic
% 0.17/0.57 % CPULimit : 300
% 0.17/0.57 % WCLimit : 300
% 0.17/0.57 % DateTime : Sat Sep 26 07:13:24 UTC 2026
% 0.17/0.57 % CPUTime :
% 0.17/0.57 Running casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 3.90/13.89 % SZS status Unsatisfiable for theBenchmark.p
% 3.90/13.89 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------