%------------------------------------------------------------------------------
% File : Vampire-SAT---5.0.1
% Problem : SET024+1 : TPTP v9.3.1. Bugfixed v5.4.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% Computer : n013.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 12:42:41 PM UTC 2026
% Result : Theorem 0.10s 0.45s
% Output : Refutation 0.10s
% Verified :
% SZS Type : Refutation
% Derivation depth : 7
% Number of leaves : 3
% Syntax : Number of formulae : 16 ( 7 unt; 0 def)
% Number of atoms : 40 ( 13 equ)
% Maximal formula atoms : 8 ( 2 avg)
% Number of connectives : 41 ( 17 ~; 12 |; 9 &)
% ( 1 <=>; 2 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 4 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 3 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 4 ( 4 usr; 2 con; 0-2 aty)
% Number of variables : 19 ( 18 !; 1 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f4,axiom,
! [X0,X1,X2] :
( member(X0,unordered_pair(X1,X2))
<=> ( member(X0,universal_class)
& ( X0 = X1
| X0 = X2 ) ) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET005+0.ax',unordered_pair_defn) ).
fof(f6,axiom,
! [X0] : singleton(X0) = unordered_pair(X0,X0),
file('/export/starexec/sandbox/benchmark/Axioms/SET005+0.ax',singleton_set_defn) ).
fof(f44,conjecture,
! [X0] :
( member(X0,universal_class)
=> member(X0,singleton(X0)) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',set_in_its_singleton) ).
fof(f45,negated_conjecture,
~ ! [X0] :
( member(X0,universal_class)
=> member(X0,singleton(X0)) ),
inference(negated_conjecture,[status(cth)],[f44]) ).
fof(f60,plain,
? [X0] :
( ~ member(X0,singleton(X0))
& member(X0,universal_class) ),
inference(ennf_transformation,[],[f45]) ).
fof(f66,plain,
! [X0,X1,X2] :
( ( member(X0,unordered_pair(X1,X2))
| ~ member(X0,universal_class)
| ( X0 != X1
& X0 != X2 ) )
& ( ( member(X0,universal_class)
& ( X0 = X1
| X0 = X2 ) )
| ~ member(X0,unordered_pair(X1,X2)) ) ),
inference(nnf_transformation,[],[f4]) ).
fof(f67,plain,
! [X0,X1,X2] :
( ( member(X0,unordered_pair(X1,X2))
| ~ member(X0,universal_class)
| ( X0 != X1
& X0 != X2 ) )
& ( ( member(X0,universal_class)
& ( X0 = X1
| X0 = X2 ) )
| ~ member(X0,unordered_pair(X1,X2)) ) ),
inference(flattening,[],[f66]) ).
fof(f103,plain,
( ~ member(sK6,singleton(sK6))
& member(sK6,universal_class) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK6]),skolemize(X0,sK6)],[f60]) ).
fof(f114,plain,
! [X2,X0,X1] :
( member(X0,unordered_pair(X1,X2))
| ~ member(X0,universal_class)
| X0 != X1 ),
inference(cnf_transformation,[],[f67]) ).
fof(f116,plain,
! [X0] : singleton(X0) = unordered_pair(X0,X0),
inference(cnf_transformation,[],[f6]) ).
fof(f191,plain,
member(sK6,universal_class),
inference(cnf_transformation,[],[f103]) ).
fof(f192,plain,
~ member(sK6,singleton(sK6)),
inference(cnf_transformation,[],[f103]) ).
fof(f230,plain,
~ member(sK6,unordered_pair(sK6,sK6)),
inference(definition_unfolding,[],[f192,f116]) ).
fof(f233,plain,
! [X2,X1] :
( member(X1,unordered_pair(X1,X2))
| ~ member(X1,universal_class) ),
inference(equality_resolution,[],[f114]) ).
fof(f276,plain,
~ member(sK6,universal_class),
inference(resolution,[],[f233,f230]) ).
fof(f278,plain,
$false,
inference(forward_subsumption_resolution,[],[f276,f191]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET024+1 : TPTP v9.3.1. Bugfixed v5.4.0.
% 0.00/0.06 % Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% 0.10/0.37 % Computer : n013.cluster.edu
% 0.10/0.37 % Model : x86_64 x86_64
% 0.10/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.37 % Memory : 8046.5625MB
% 0.10/0.37 % OS : Linux 6.8.0-71-generic
% 0.10/0.37 % CPULimit : 300
% 0.10/0.37 % WCLimit : 300
% 0.10/0.37 % DateTime : Mon Sep 28 00:11:36 UTC 2026
% 0.10/0.37 % CPUTime :
% 0.10/0.37 Running run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% 0.10/0.40 Running first-order model finding
% 0.10/0.40 Running: /export/starexec/sandbox/solver/bin/vampire-ho --input_syntax tptp --output_axiom_names on --mode casc --intent sat -m 16384 --cores 7 -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.10/0.45 % (688495)Will run a generic schedule for satisfiability detection.
% 0.10/0.45 % (688500)fmb+10_1_sas=cadical:bce=on:rp=on:random_seed=1759943410_2999 on theBenchmark for (2999ds/0Mi)
% 0.10/0.45 % (688505)ott+1_1_to=lpo:sil=16000:sp=reverse_arity:erd=off:random_seed=659943985:i=131_2999 on theBenchmark for (2999ds/131Mi)
% 0.10/0.45 % (688502)dis+10_161_sil=256000:plsq=on:plsqr=61199697,1048576:gs=on:alpa=true:sac=on:slsq=on:cn=on:random_seed=365080314:i=88024:add=on:rawr=on_2999 on theBenchmark for (2999ds/88024Mi)
% 0.10/0.45 % (688503)dis+10_1_sil=32000:sp=arity:random_seed=331567568:i=103:fgj=on_2999 on theBenchmark for (2999ds/103Mi)
% 0.10/0.45 % (688506)ott-3_16_to=lpo:sil=16000:sp=arity:fd=off:rp=on:random_seed=280626208:i=159:bs=unit_only:nicw=on:fsr=off:amm=off_2999 on theBenchmark for (2999ds/159Mi)
% 0.10/0.45 % (688504)ott+31_1_sil=16000:lcm=predicate:bce=on:newcnf=on:random_seed=1420239288:i=116_2999 on theBenchmark for (2999ds/116Mi)
% 0.10/0.45 % (688503) found proof, printing to "/export/starexec/sandbox/tmp/vampire-proof-688495-688503"...
% 0.10/0.45 % (688501)% WARNING: option uhcvi not known.
% 0.10/0.45 % (688504) found proof, printing to "/export/starexec/sandbox/tmp/vampire-proof-688495-688504"...
% 0.10/0.45 % (688506) found proof, printing to "/export/starexec/sandbox/tmp/vampire-proof-688495-688506"...
% 0.10/0.45 % (688503)...printing done.
% 0.10/0.45 % (688504)...printing done.
% 0.10/0.45 % (688503)Refutation found. Thanks to Tanya!
% 0.10/0.45 % SZS status Theorem for theBenchmark
% 0.10/0.45 % SZS output start Proof for theBenchmark
% See solution above
% 0.10/0.45 % (688503)------------------------------
% 0.10/0.45 % (688503)Version: Vampire 5.0.1 (Release build, commit 5ef7c2677 on 2026-07-16 16:54:09 +0200)
% 0.10/0.45 % (688503)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.10/0.45 % (688503)CaDiCaL version: 2.1.3
% 0.10/0.45 % (688503)Termination reason: Refutation
% 0.10/0.45 % (688503)Time elapsed: 0.005 s
% 0.10/0.45 % (688503)Peak memory usage: 11 MB
% 0.10/0.45 % (688503)Instructions burned: 6 (million)
% 0.10/0.45 % (688495)Success in time 0.043 s
% 0.10/0.45 % Vampire exiting
%------------------------------------------------------------------------------