%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : SYN959+1 : TPTP v9.3.1. Released v3.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% Computer : n019.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 02:06:04 PM UTC 2026
% Result : Theorem 2.51s 1.17s
% Output : Refutation 2.51s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 1
% Syntax : Number of formulae : 10 ( 3 unt; 0 def)
% Number of atoms : 20 ( 0 equ)
% Maximal formula atoms : 3 ( 2 avg)
% Number of connectives : 17 ( 7 ~; 3 |; 3 &)
% ( 0 <=>; 4 =>; 0 <=; 0 <~>)
% Maximal formula depth : 5 ( 4 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 3 ( 2 usr; 1 prp; 0-1 aty)
% Number of functors : 1 ( 1 usr; 1 con; 0-0 aty)
% Number of variables : 14 ( 4 !; 10 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,conjecture,
( ? [X0] : b(X0)
=> ? [X0] :
( a(X0)
| b(X0) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this) ).
fof(f2,negated_conjecture,
~ ( ? [X0] : b(X0)
=> ? [X0] :
( a(X0)
| b(X0) ) ),
inference(negated_conjecture,[status(cth)],[f1]) ).
fof(f3,plain,
~ ( ? [X0] : b(X0)
=> ? [X1] :
( a(X1)
| b(X1) ) ),
inference(rectify,[],[f2]) ).
fof(f4,plain,
~ ( ? [X0] : b(X0)
=> ? [X1] : b(X1) ),
inference(pure_predicate_removal,[],[f3]) ).
fof(f5,plain,
( ! [X1] : ~ b(X1)
& ? [X0] : b(X0) ),
inference(ennf_transformation,[],[f4]) ).
fof(f6,plain,
( ! [X0] : ~ b(X0)
& ? [X1] : b(X1) ),
inference(rectify,[],[f5]) ).
fof(f7,plain,
( ! [X0] : ~ b(X0)
& b(sK0) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0]),skolemize(X1,sK0)],[f6]) ).
fof(f8,plain,
b(sK0),
inference(cnf_transformation,[],[f7]) ).
fof(f9,plain,
! [X0] : ~ b(X0),
inference(cnf_transformation,[],[f7]) ).
fof(f10,plain,
$false,
inference(resolution,[],[f9,f8]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SYN959+1 : TPTP v9.3.1. Released v3.1.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.09/0.21 % Computer : n019.cluster.edu
% 0.09/0.21 % Model : x86_64 x86_64
% 0.09/0.21 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.21 % Memory : 8046.5625MB
% 0.09/0.21 % OS : Linux 6.8.0-71-generic
% 0.09/0.21 % CPULimit : 300
% 0.09/0.21 % WCLimit : 300
% 0.09/0.21 % DateTime : Mon Sep 28 17:17:04 UTC 2026
% 0.09/0.21 % CPUTime :
% 0.09/0.21 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.09/0.25 Running first-order theorem proving
% 0.09/0.25 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
% 2.51/1.17 % (4168183)Detected formulas, will run a generic FOF schedule.
% 2.51/1.17 % (4168206)lrs+1010_1_to=lpo:sil=32000:sos=on:spb=goal_then_units:bce=on:random_seed=329009725:i=109:sd=1:ins=1:gsp=on:ss=axioms_3000 on theBenchmark for (3000ds/109Mi)
% 2.51/1.17 % (4168206)First to succeed.
% 2.51/1.17 % (4168206)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-4168183"
% 2.51/1.17 % (4168203)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=646512329:i=141193_3000 on theBenchmark for (3000ds/141193Mi)
% 2.51/1.17 % (4168208)dis-1011_1_sil=16000:fde=unused:s2agt=70:random_seed=4079796907:s2a=on:i=139:gtg=position_3000 on theBenchmark for (3000ds/139Mi)
% 2.51/1.17 % (4168204)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=3816816368:i=134677:sd=20:aac=none:nm=16:ss=included:sgt=10_3000 on theBenchmark for (3000ds/134677Mi)
% 2.51/1.17 % (4168209)dis-21_1_sil=8000:lcm=predicate:random_seed=809672675:st=5:avsq=on:i=129:avsqr=1,16:sd=3:aac=none:ep=RS:fsr=off:ss=included_3000 on theBenchmark for (3000ds/129Mi)
% 2.51/1.17 % (4168205)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=2286812765:i=141695:sd=1:nm=32:gsp=on:ss=included_3000 on theBenchmark for (3000ds/141695Mi)
% 2.51/1.17 % (4168209)Also succeeded, but the first one will report.
% 2.51/1.17 % (4168208)Also succeeded, but the first one will report.
% 2.51/1.17 % (4168207)dis-1010_2:3_sil=16000:sp=reverse_frequency:random_seed=1684782029:i=119:av=off:ss=axioms_3000 on theBenchmark for (3000ds/119Mi)
% 2.51/1.17 % (4168207)Also succeeded, but the first one will report.
% 2.51/1.17 % (4168206)Refutation found. Thanks to Tanya!
% 2.51/1.17 % SZS status Theorem for theBenchmark
% 2.51/1.17 % SZS output start Proof for theBenchmark
% See solution above
% 2.51/1.17 % (4168206)------------------------------
% 2.51/1.17 % (4168206)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 2.51/1.17 % (4168206)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 2.51/1.17 % (4168206)CaDiCaL version: 2.1.3
% 2.51/1.17 % (4168206)Termination reason: Refutation
% 2.51/1.17 % (4168206)Time elapsed: 0.001 s
% 2.51/1.17 % (4168206)Peak memory usage: 88 MB
% 2.51/1.17 % (4168206)------------------------------
% 2.51/1.17 % (4168206)------------------------------
% 2.51/1.17 % (4168183)Success in time 0.25 s
% 2.51/1.17 % Vampire exiting
%------------------------------------------------------------------------------