%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : SET054+1 : TPTP v9.3.1. Bugfixed v5.4.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% Computer : n026.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 12:39:48 PM UTC 2026
% Result : Theorem 0.18s 1.20s
% Output : Refutation 0.18s
% Verified :
% SZS Type : Refutation
% Derivation depth : 5
% Number of leaves : 2
% Syntax : Number of formulae : 11 ( 7 unt; 0 def)
% Number of atoms : 24 ( 6 equ)
% Maximal formula atoms : 6 ( 2 avg)
% Number of connectives : 24 ( 11 ~; 7 |; 5 &)
% ( 1 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 4 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 3 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 1 ( 1 usr; 1 con; 0-0 aty)
% Number of variables : 12 ( 11 !; 1 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f3,axiom,
! [X0,X1] :
( X0 = X1
<=> ( subclass(X0,X1)
& subclass(X1,X0) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',extensionality) ).
fof(f44,conjecture,
! [X0] : subclass(X0,X0),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',reflexivity_of_subclass) ).
fof(f45,negated_conjecture,
~ ! [X0] : subclass(X0,X0),
inference(negated_conjecture,[status(cth)],[f44]) ).
fof(f46,plain,
? [X0] : ~ subclass(X0,X0),
inference(ennf_transformation,[],[f45]) ).
fof(f48,plain,
~ subclass(sK0,sK0),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0]),skolemize(X0,sK0)],[f46]) ).
fof(f49,plain,
! [X0,X1] :
( ( X0 = X1
| ~ subclass(X0,X1)
| ~ subclass(X1,X0) )
& ( ( subclass(X0,X1)
& subclass(X1,X0) )
| X0 != X1 ) ),
inference(nnf_transformation,[],[f3]) ).
fof(f50,plain,
! [X0,X1] :
( ( X0 = X1
| ~ subclass(X0,X1)
| ~ subclass(X1,X0) )
& ( ( subclass(X0,X1)
& subclass(X1,X0) )
| X0 != X1 ) ),
inference(flattening,[],[f49]) ).
fof(f54,plain,
~ subclass(sK0,sK0),
inference(cnf_transformation,[],[f48]) ).
fof(f56,plain,
! [X0,X1] :
( subclass(X0,X1)
| X0 != X1 ),
inference(cnf_transformation,[],[f50]) ).
fof(f62,plain,
! [X1] : subclass(X1,X1),
inference(equality_resolution,[],[f56]) ).
fof(f64,plain,
$false,
inference(resolution,[],[f62,f54]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET054+1 : TPTP v9.3.1. Bugfixed v5.4.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.10/0.38 % Computer : n026.cluster.edu
% 0.10/0.38 % Model : x86_64 x86_64
% 0.10/0.38 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.38 % Memory : 8046.5625MB
% 0.10/0.38 % OS : Linux 6.8.0-71-generic
% 0.10/0.38 % CPULimit : 300
% 0.10/0.38 % WCLimit : 300
% 0.10/0.38 % DateTime : Mon Sep 28 00:25:42 UTC 2026
% 0.10/0.38 % CPUTime :
% 0.10/0.38 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.10/0.41 Running first-order theorem proving
% 0.10/0.41 Running: /export/starexec/sandbox2/solver/bin/vampire --input_syntax tptp --output_axiom_names on --mode casc -m 16384 --cores 7 -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.18/1.20 % (3363248)Detected formulas, will run a generic FOF schedule.
% 0.18/1.20 % (3363257)dis-1010_2:3_sil=16000:sp=reverse_frequency:random_seed=2433110416:i=119:av=off:ss=axioms_2999 on theBenchmark for (2999ds/119Mi)
% 0.18/1.20 % (3363255)lrs+1010_1_anc=all:sfv=off:to=kbo:ncem=casc2026/models/loop7.pt:sil=128000:npcc=on:prc=on:sos=all:bsr=unit_only:sac=on:random_seed=2731634528:i=141695:sd=1:nm=32:gsp=on:ss=included_2999 on theBenchmark for (2999ds/141695Mi)
% 0.18/1.20 % (3363254)lrs+11_1_ncem=casc2026/models/loop8.pt:sil=128000:npcc=on:lma=off:spb=units:urr=ec_only:bce=on:s2agt=64:updr=off:random_seed=1105785024:i=134677:sd=20:aac=none:nm=16:ss=included:sgt=10_2999 on theBenchmark for (2999ds/134677Mi)
% 0.18/1.20 % (3363253)lrs+10_1_ncem=casc2026/models/loop8.pt:sil=128000:tgt=full:npcc=on:drc=off:sp=weighted_frequency:spb=goal:fd=preordered:foolp=on:random_seed=2248952662:i=141193_2999 on theBenchmark for (2999ds/141193Mi)
% 0.18/1.20 % (3363256)lrs+1010_1_to=lpo:sil=32000:sos=on:spb=goal_then_units:bce=on:random_seed=1407390797:i=109:sd=1:ins=1:gsp=on:ss=axioms_2999 on theBenchmark for (2999ds/109Mi)
% 0.18/1.20 % (3363259)dis-21_1_sil=8000:lcm=predicate:random_seed=625459670:st=5:avsq=on:i=129:avsqr=1,16:sd=3:aac=none:ep=RS:fsr=off:ss=included_2999 on theBenchmark for (2999ds/129Mi)
% 0.18/1.20 % (3363258)dis-1011_1_sil=16000:fde=unused:s2agt=70:random_seed=1788953784:s2a=on:i=139:gtg=position_2999 on theBenchmark for (2999ds/139Mi)
% 0.18/1.20 % (3363256)Also succeeded, but the first one will report.
% 0.18/1.20 % (3363257)First to succeed.
% 0.18/1.20 % (3363257)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-3363248"
% 0.18/1.20 % (3363258)Also succeeded, but the first one will report.
% 0.18/1.20 % (3363259)Also succeeded, but the first one will report.
% 0.18/1.20 % (3363257)Refutation found. Thanks to Tanya!
% 0.18/1.20 % SZS status Theorem for theBenchmark
% 0.18/1.20 % SZS output start Proof for theBenchmark
% See solution above
% 0.18/1.20 % (3363257)------------------------------
% 0.18/1.20 % (3363257)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 0.18/1.20 % (3363257)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.18/1.20 % (3363257)CaDiCaL version: 2.1.3
% 0.18/1.20 % (3363257)Termination reason: Refutation
% 0.18/1.20 % (3363257)Time elapsed: 0.002 s
% 0.18/1.20 % (3363257)Peak memory usage: 88 MB
% 0.18/1.20 % (3363257)------------------------------
% 0.18/1.20 % (3363257)------------------------------
% 0.18/1.20 % (3363248)Success in time 0.399 s
% 0.18/1.20 % Vampire exiting
%------------------------------------------------------------------------------