%------------------------------------------------------------------------------
% File : Vampire-SAT---5.0.1
% Problem : GRP544-1 : TPTP v9.3.1. Bugfixed v2.7.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 SAT
% Computer : n014.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 10:18:04 AM UTC 2026
% Result : Unsatisfiable 0.15s 0.47s
% Output : Refutation 0.15s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 4
% Syntax : Number of formulae : 25 ( 25 unt; 0 def)
% Number of atoms : 25 ( 24 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 9 ( 9 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 4 ( 3 avg)
% Maximal term depth : 6 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 3 con; 0-2 aty)
% Number of variables : 31 ( 31 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X2,X0,X1] : divide(divide(identity,divide(divide(divide(X0,X1),X2),X0)),X2) = X1,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',single_axiom) ).
fof(f2,axiom,
! [X0,X1] : multiply(X0,X1) = divide(X0,divide(identity,X1)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',multiply) ).
fof(f4,axiom,
! [X0] : identity = divide(X0,X0),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',identity) ).
fof(f5,negated_conjecture,
multiply(a,b) != multiply(b,a),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_these_axioms_4) ).
fof(f6,plain,
divide(a,divide(identity,b)) != divide(b,divide(identity,a)),
inference(definition_unfolding,[],[f5,f2,f2]) ).
fof(f8,plain,
! [X0] : divide(a,divide(divide(X0,X0),b)) != divide(b,divide(divide(X0,X0),a)),
inference(superposition,[],[f6,f4]) ).
fof(f11,plain,
! [X0,X1] : divide(divide(identity,divide(divide(identity,X1),X0)),X1) = X0,
inference(superposition,[],[f1,f4]) ).
fof(f13,plain,
! [X2,X0,X1] : divide(divide(divide(X1,X0),X2),X1) = divide(divide(identity,divide(X0,identity)),X2),
inference(superposition,[],[f1,f1]) ).
fof(f14,plain,
! [X0,X1] : divide(divide(identity,divide(identity,X0)),divide(X0,X1)) = X1,
inference(superposition,[],[f1,f4]) ).
fof(f32,plain,
! [X0] : divide(divide(identity,divide(identity,X0)),identity) = X0,
inference(superposition,[],[f11,f4]) ).
fof(f55,plain,
! [X0] : divide(divide(identity,identity),divide(identity,X0)) = X0,
inference(superposition,[],[f14,f4]) ).
fof(f66,plain,
! [X0,X1] : divide(X1,X0) = divide(divide(identity,X0),divide(identity,X1)),
inference(superposition,[],[f11,f14]) ).
fof(f67,plain,
! [X0,X1] : divide(identity,X1) = divide(divide(identity,divide(X0,identity)),divide(X1,X0)),
inference(superposition,[],[f1,f14]) ).
fof(f77,plain,
! [X0] : divide(identity,divide(identity,X0)) = X0,
inference(forward_demodulation,[],[f55,f4]) ).
fof(f85,plain,
! [X0] : divide(X0,identity) = X0,
inference(superposition,[],[f32,f77]) ).
fof(f135,plain,
! [X0,X1] : divide(X1,divide(X0,X0)) = X1,
inference(superposition,[],[f85,f4]) ).
fof(f161,plain,
! [X0,X1] : divide(identity,divide(divide(divide(X0,X1),identity),X0)) = X1,
inference(superposition,[],[f1,f85]) ).
fof(f162,plain,
! [X0,X1] : divide(identity,divide(divide(X0,X1),X0)) = X1,
inference(forward_demodulation,[],[f161,f85]) ).
fof(f214,plain,
! [X0] : divide(b,divide(divide(divide(b,X0),divide(b,X0)),a)) != divide(a,divide(divide(identity,divide(X0,identity)),divide(b,X0))),
inference(superposition,[],[f8,f13]) ).
fof(f244,plain,
! [X0] : divide(a,divide(identity,b)) != divide(b,divide(divide(divide(b,X0),divide(b,X0)),a)),
inference(forward_demodulation,[],[f214,f67]) ).
fof(f285,plain,
! [X0] : divide(a,divide(identity,b)) != divide(b,divide(divide(identity,a),divide(identity,divide(divide(b,X0),divide(b,X0))))),
inference(forward_demodulation,[],[f244,f66]) ).
fof(f307,plain,
divide(a,divide(identity,b)) != divide(b,divide(divide(identity,a),identity)),
inference(forward_demodulation,[],[f285,f135]) ).
fof(f316,plain,
divide(a,divide(identity,b)) != divide(divide(identity,divide(divide(identity,a),identity)),divide(identity,b)),
inference(forward_demodulation,[],[f307,f66]) ).
fof(f321,plain,
divide(a,divide(identity,b)) != divide(a,divide(identity,b)),
inference(forward_demodulation,[],[f316,f162]) ).
fof(f322,plain,
$false,
inference(trivial_inequality_removal,[],[f321]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : GRP544-1 : TPTP v9.3.1. Bugfixed v2.7.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 SAT
% 0.10/0.37 % Computer : n014.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 : Sun Sep 27 10:07:02 UTC 2026
% 0.10/0.37 % CPUTime :
% 0.10/0.37 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 SAT
% 0.15/0.41 Running first-order model finding
% 0.15/0.41 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
% 0.15/0.47 % (571532)Will run a generic schedule for satisfiability detection.
% 0.15/0.47 % (571539)% WARNING: option uhcvi not known.
% 0.15/0.47 % (571542)ott+31_1_sil=16000:lcm=predicate:bce=on:newcnf=on:random_seed=3546513740:i=116_2999 on theBenchmark for (2999ds/116Mi)
% 0.15/0.47 % (571539)dis+11_61:31_drc=ordering:lsd=5:bsr=unit_only:rp=on:newcnf=on:random_seed=3450797176:i=135531:add=off:rawr=on_2999 on theBenchmark for (2999ds/135531Mi)
% 0.15/0.47 % (571543)ott+1_1_to=lpo:sil=16000:sp=reverse_arity:erd=off:random_seed=203375344:i=131_2999 on theBenchmark for (2999ds/131Mi)
% 0.15/0.47 % (571544)ott-3_16_to=lpo:sil=16000:sp=arity:fd=off:rp=on:random_seed=350941110:i=159:bs=unit_only:nicw=on:fsr=off:amm=off_2999 on theBenchmark for (2999ds/159Mi)
% 0.15/0.47 % (571541)dis+10_1_sil=32000:sp=arity:random_seed=2980245369:i=103:fgj=on_2999 on theBenchmark for (2999ds/103Mi)
% 0.15/0.47 % (571540)dis+10_161_sil=256000:plsq=on:plsqr=61199697,1048576:gs=on:alpa=true:sac=on:slsq=on:cn=on:random_seed=1554911533:i=88024:add=on:rawr=on_2999 on theBenchmark for (2999ds/88024Mi)
% 0.15/0.47 % (571538)fmb+10_1_sas=cadical:bce=on:rp=on:random_seed=1513129059_2999 on theBenchmark for (2999ds/0Mi)
% 0.15/0.47 % TRYING [1]
% 0.15/0.47 % TRYING [2]
% 0.15/0.47 % TRYING [3]
% 0.15/0.47 % TRYING [4]
% 0.15/0.47 % (571543) found proof, printing to "/export/starexec/sandbox2/tmp/vampire-proof-571532-571543"...
% 0.15/0.47 % (571543)...printing done.
% 0.15/0.47 % (571543)Refutation found. Thanks to Tanya!
% 0.15/0.47 % SZS status Unsatisfiable for theBenchmark
% 0.15/0.47 % SZS output start Proof for theBenchmark
% See solution above
% 0.15/0.47 % (571543)------------------------------
% 0.15/0.47 % (571543)Version: Vampire 5.0.1 (Release build, commit 5ef7c2677 on 2026-07-16 16:54:09 +0200)
% 0.15/0.47 % (571543)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.15/0.47 % (571543)CaDiCaL version: 2.1.3
% 0.15/0.47 % (571543)Termination reason: Refutation
% 0.15/0.47 % (571543)Time elapsed: 0.014 s
% 0.15/0.47 % (571543)Peak memory usage: 11 MB
% 0.15/0.47 % (571543)Instructions burned: 14 (million)
% 0.15/0.47 % (571532)Success in time 0.05 s
% 0.15/0.47 % Vampire exiting
%------------------------------------------------------------------------------