%------------------------------------------------------------------------------
% File : Vampire-SAT---5.0.1
% Problem : SET202-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 SAT
% Computer : n001.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 : Tue Sep 29 12:43:27 PM UTC 2026
% Result : Unsatisfiable 0.34s 0.48s
% Output : Refutation 0.34s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 11
% Syntax : Number of formulae : 30 ( 14 unt; 0 def)
% Number of atoms : 50 ( 6 equ)
% Maximal formula atoms : 3 ( 1 avg)
% Number of connectives : 43 ( 23 ~; 20 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 4 avg)
% Maximal term depth : 7 ( 2 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 10 ( 10 usr; 3 con; 0-2 aty)
% Number of variables : 51 ( 51 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X2,X0,X1] :
( ~ subclass(X0,X1)
| ~ member(X2,X0)
| member(X2,X1) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',subclass_members) ).
fof(f2,axiom,
! [X0,X1] :
( subclass(X0,X1)
| member(not_subclass_element(X0,X1),X0) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',not_subclass_members1) ).
fof(f3,axiom,
! [X0,X1] :
( subclass(X0,X1)
| ~ member(not_subclass_element(X0,X1),X1) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',not_subclass_members2) ).
fof(f4,axiom,
! [X0] : subclass(X0,universal_class),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',class_elements_are_sets) ).
fof(f12,axiom,
! [X0] : unordered_pair(X0,X0) = singleton(X0),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',singleton_set) ).
fof(f13,axiom,
! [X0,X1] : unordered_pair(singleton(X0),unordered_pair(X0,singleton(X1))) = ordered_pair(X0,X1),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',ordered_pair) ).
fof(f14,axiom,
! [X2,X3,X0,X1] :
( ~ member(ordered_pair(X0,X1),cross_product(X2,X3))
| member(X0,X2) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',cartesian_product1) ).
fof(f15,axiom,
! [X2,X3,X0,X1] :
( ~ member(ordered_pair(X0,X1),cross_product(X2,X3))
| member(X1,X3) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',cartesian_product2) ).
fof(f16,axiom,
! [X2,X3,X0,X1] :
( ~ member(X0,X1)
| ~ member(X2,X3)
| member(ordered_pair(X0,X2),cross_product(X1,X3)) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',cartesian_product3) ).
fof(f17,axiom,
! [X2,X0,X1] :
( ~ member(X0,cross_product(X1,X2))
| ordered_pair(first(X0),second(X0)) = X0 ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',cartesian_product4) ).
fof(f122,negated_conjecture,
~ subclass(cross_product(x,y),cross_product(universal_class,universal_class)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_cross_product_property1_1) ).
fof(f127,plain,
! [X0,X1] : ordered_pair(X0,X1) = unordered_pair(unordered_pair(X0,X0),unordered_pair(X0,unordered_pair(X1,X1))),
inference(definition_unfolding,[],[f13,f12,f12]) ).
fof(f136,plain,
! [X2,X3,X0,X1] :
( ~ member(unordered_pair(unordered_pair(X0,X0),unordered_pair(X0,unordered_pair(X1,X1))),cross_product(X2,X3))
| member(X0,X2) ),
inference(definition_unfolding,[],[f14,f127]) ).
fof(f137,plain,
! [X2,X3,X0,X1] :
( ~ member(unordered_pair(unordered_pair(X0,X0),unordered_pair(X0,unordered_pair(X1,X1))),cross_product(X2,X3))
| member(X1,X3) ),
inference(definition_unfolding,[],[f15,f127]) ).
fof(f138,plain,
! [X2,X3,X0,X1] :
( member(unordered_pair(unordered_pair(X0,X0),unordered_pair(X0,unordered_pair(X2,X2))),cross_product(X1,X3))
| ~ member(X2,X3)
| ~ member(X0,X1) ),
inference(definition_unfolding,[],[f16,f127]) ).
fof(f139,plain,
! [X2,X0,X1] :
( ~ member(X0,cross_product(X1,X2))
| unordered_pair(unordered_pair(first(X0),first(X0)),unordered_pair(first(X0),unordered_pair(second(X0),second(X0)))) = X0 ),
inference(definition_unfolding,[],[f17,f127]) ).
fof(f193,plain,
member(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class)),cross_product(x,y)),
inference(resolution,[],[f2,f122]) ).
fof(f194,plain,
~ member(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class)),cross_product(universal_class,universal_class)),
inference(resolution,[],[f3,f122]) ).
fof(f197,plain,
! [X0,X1] :
( ~ member(X0,X1)
| member(X0,universal_class) ),
inference(resolution,[],[f1,f4]) ).
fof(f422,plain,
not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class)) = unordered_pair(unordered_pair(first(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),first(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class)))),unordered_pair(first(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),unordered_pair(second(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),second(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class)))))),
inference(resolution,[],[f139,f193]) ).
fof(f479,plain,
! [X0,X1] :
( ~ member(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class)),cross_product(X0,X1))
| member(first(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),X0) ),
inference(superposition,[],[f136,f422]) ).
fof(f480,plain,
! [X0,X1] :
( ~ member(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class)),cross_product(X0,X1))
| member(second(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),X1) ),
inference(superposition,[],[f137,f422]) ).
fof(f481,plain,
! [X0,X1] :
( member(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class)),cross_product(X0,X1))
| ~ member(second(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),X1)
| ~ member(first(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),X0) ),
inference(superposition,[],[f138,f422]) ).
fof(f495,plain,
member(first(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),x),
inference(resolution,[],[f479,f193]) ).
fof(f507,plain,
member(first(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),universal_class),
inference(resolution,[],[f495,f197]) ).
fof(f517,plain,
member(second(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),y),
inference(resolution,[],[f480,f193]) ).
fof(f523,plain,
member(second(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),universal_class),
inference(resolution,[],[f517,f197]) ).
fof(f576,plain,
( ~ member(second(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),universal_class)
| ~ member(first(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),universal_class) ),
inference(resolution,[],[f481,f194]) ).
fof(f581,plain,
~ member(first(not_subclass_element(cross_product(x,y),cross_product(universal_class,universal_class))),universal_class),
inference(forward_subsumption_resolution,[],[f576,f523]) ).
fof(f582,plain,
$false,
inference(forward_subsumption_resolution,[],[f581,f507]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : SET202-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 SAT
% 0.11/0.37 % Computer : n001.cluster.edu
% 0.11/0.37 % Model : x86_64 x86_64
% 0.11/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.37 % Memory : 8046.5625MB
% 0.11/0.37 % OS : Linux 6.8.0-71-generic
% 0.11/0.37 % CPULimit : 300
% 0.11/0.37 % WCLimit : 300
% 0.11/0.37 % DateTime : Mon Sep 28 01:11:49 UTC 2026
% 0.11/0.38 % CPUTime :
% 0.11/0.38 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 SAT
% 0.11/0.41 Running first-order model finding
% 0.11/0.41 Running: /export/starexec/sandbox2/solver/bin/vampire-ho --input_syntax tptp --output_axiom_names on --mode casc --intent sat -m 16384 --cores 7 -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.34/0.47 % (4127887)Will run a generic schedule for satisfiability detection.
% 0.34/0.47 % (4127898)ott-3_16_to=lpo:sil=16000:sp=arity:fd=off:rp=on:random_seed=2782511543:i=159:bs=unit_only:nicw=on:fsr=off:amm=off_2999 on theBenchmark for (2999ds/159Mi)
% 0.34/0.47 % (4127892)fmb+10_1_sas=cadical:bce=on:rp=on:random_seed=2505921305_2999 on theBenchmark for (2999ds/0Mi)
% 0.34/0.47 % (4127894)dis+10_161_sil=256000:plsq=on:plsqr=61199697,1048576:gs=on:alpa=true:sac=on:slsq=on:cn=on:random_seed=3252486525:i=88024:add=on:rawr=on_2999 on theBenchmark for (2999ds/88024Mi)
% 0.34/0.47 % (4127895)dis+10_1_sil=32000:sp=arity:random_seed=2328422211:i=103:fgj=on_2999 on theBenchmark for (2999ds/103Mi)
% 0.34/0.47 % (4127896)ott+31_1_sil=16000:lcm=predicate:bce=on:newcnf=on:random_seed=1962415919:i=116_2999 on theBenchmark for (2999ds/116Mi)
% 0.34/0.47 % (4127897)ott+1_1_to=lpo:sil=16000:sp=reverse_arity:erd=off:random_seed=3533151892:i=131_2999 on theBenchmark for (2999ds/131Mi)
% 0.34/0.47 % (4127893)% WARNING: option uhcvi not known.
% 0.34/0.47 % (4127893)dis+11_61:31_drc=ordering:lsd=5:bsr=unit_only:rp=on:newcnf=on:random_seed=2756051728:i=135531:add=off:rawr=on_2999 on theBenchmark for (2999ds/135531Mi)
% 0.34/0.48 % (4127896) found proof, printing to "/export/starexec/sandbox2/tmp/vampire-proof-4127887-4127896"...
% 0.34/0.48 % (4127896)...printing done.
% 0.34/0.48 % (4127896)Refutation found. Thanks to Tanya!
% 0.34/0.48 % SZS status Unsatisfiable for theBenchmark
% 0.34/0.48 % SZS output start Proof for theBenchmark
% See solution above
% 0.34/0.48 % (4127896)------------------------------
% 0.34/0.48 % (4127896)Version: Vampire 5.0.1 (Release build, commit 5ef7c2677 on 2026-07-16 16:54:09 +0200)
% 0.34/0.48 % (4127896)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.34/0.48 % (4127896)CaDiCaL version: 2.1.3
% 0.34/0.48 % (4127896)Termination reason: Refutation
% 0.34/0.48 % (4127896)Time elapsed: 0.022 s
% 0.34/0.48 % (4127896)Peak memory usage: 12 MB
% 0.34/0.48 % (4127896)Instructions burned: 33 (million)
% 0.34/0.48 % (4127887)Success in time 0.058 s
% 0.34/0.48 % Vampire exiting
%------------------------------------------------------------------------------