%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : SYN327-1 : TPTP v9.3.1. Released v1.2.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 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 01:50:13 PM UTC 2026
% Result : Unsatisfiable 0.20s 1.30s
% Output : Refutation 0.20s
% Verified :
% SZS Type : Refutation
% Derivation depth : 4
% Number of leaves : 3
% Syntax : Number of formulae : 8 ( 3 unt; 0 def)
% Number of atoms : 15 ( 0 equ)
% Maximal formula atoms : 3 ( 1 avg)
% Number of connectives : 16 ( 9 ~; 7 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 5 ( 3 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 2 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 2 ( 2 usr; 1 con; 0-1 aty)
% Number of variables : 3 ( 3 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,negated_conjecture,
! [X0] :
( f(X0,a)
| f(a,X0) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause1) ).
fof(f5,negated_conjecture,
! [X0] :
( ~ f(a,z(X0))
| ~ f(a,X0) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause5) ).
fof(f6,negated_conjecture,
! [X0] :
( ~ f(z(X0),X0)
| ~ f(X0,a)
| ~ f(a,X0) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause6) ).
fof(f7,plain,
f(a,a),
inference(factoring,[],[f1]) ).
fof(f10,plain,
( ~ f(a,a)
| ~ f(a,a)
| f(a,z(a)) ),
inference(resolution,[],[f6,f1]) ).
fof(f11,plain,
( ~ f(a,a)
| f(a,z(a)) ),
inference(duplicate_literal_removal,[],[f10]) ).
fof(f12,plain,
~ f(a,a),
inference(forward_subsumption_resolution,[],[f11,f5]) ).
fof(f13,plain,
$false,
inference(forward_subsumption_resolution,[],[f12,f7]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SYN327-1 : TPTP v9.3.1. Released v1.2.0.
% 0.00/0.06 % Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.09/0.19 % Computer : n014.cluster.edu
% 0.09/0.19 % Model : x86_64 x86_64
% 0.09/0.19 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.19 % Memory : 8046.5625MB
% 0.09/0.19 % OS : Linux 6.8.0-71-generic
% 0.09/0.19 % CPULimit : 300
% 0.09/0.19 % WCLimit : 300
% 0.09/0.20 % DateTime : Mon Sep 28 15:42:01 UTC 2026
% 0.09/0.20 % CPUTime :
% 0.09/0.20 Running run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.09/0.23 Running first-order theorem proving
% 0.09/0.23 Running: /export/starexec/sandbox/solver/bin/vampire --input_syntax tptp --output_axiom_names on --mode casc -m 16384 --cores 7 -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.20/1.30 % (1870625)Input is clausal, will run a generic CNF schedule.
% 0.20/1.30 % (1870714)lrs+10_1_ncem=casc2026/models/loop8.pt:sil=128000:npcc=on:urr=on:br=off:random_seed=2215585736:i=132376:av=off_2999 on theBenchmark for (2999ds/132376Mi)
% 0.20/1.30 % (1870715)lrs+1002_1_ncem=casc2026/models/loop8.pt:sil=128000:tgt=ground:npcc=on:sp=reverse_frequency:spb=intro:random_seed=2960636505:i=137899:s2at=10:gtgl=3:kws=precedence:add=on:bd=preordered:gtg=position_2999 on theBenchmark for (2999ds/137899Mi)
% 0.20/1.30 % (1870719)dis-1011_1_sil=16000:fde=unused:s2agt=70:random_seed=1545706955:s2a=on:i=180:gtg=position_2999 on theBenchmark for (2999ds/180Mi)
% 0.20/1.30 % (1870713)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=1065239919:i=140167_2999 on theBenchmark for (2999ds/140167Mi)
% 0.20/1.30 % (1870720)dis-21_1_sil=8000:lcm=predicate:random_seed=1474525299:st=5:avsq=on:i=117:avsqr=1,16:sd=3:aac=none:ep=RS:fsr=off:ss=included_2999 on theBenchmark for (2999ds/117Mi)
% 0.20/1.30 % (1870717)lrs+10_1_sil=8000:sp=occurrence:random_seed=1040405646:i=107:sd=3:ss=axioms:sgt=8_2999 on theBenchmark for (2999ds/107Mi)
% 0.20/1.30 % (1870717)First to succeed.
% 0.20/1.30 % (1870719)Also succeeded, but the first one will report.
% 0.20/1.30 % (1870720)Also succeeded, but the first one will report.
% 0.20/1.30 % (1870717)Solution written to "/export/starexec/sandbox/tmp/vampire-proof-1870625"
% 0.20/1.30 % (1870718)dis-1002_1_to=lpo:sil=16000:fd=off:random_seed=585867261:st=1.5:i=114:aac=none:ins=7:ss=axioms:fsd=on_2999 on theBenchmark for (2999ds/114Mi)
% 0.20/1.30 % (1870718)Also succeeded, but the first one will report.
% 0.20/1.30 % (1870717)Refutation found. Thanks to Tanya!
% 0.20/1.30 % SZS status Unsatisfiable for theBenchmark
% 0.20/1.30 % SZS output start Proof for theBenchmark
% See solution above
% 0.20/1.30 % (1870717)------------------------------
% 0.20/1.30 % (1870717)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 0.20/1.30 % (1870717)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.20/1.30 % (1870717)CaDiCaL version: 2.1.3
% 0.20/1.30 % (1870717)Termination reason: Refutation
% 0.20/1.30 % (1870717)Time elapsed: 0.002 s
% 0.20/1.30 % (1870717)Peak memory usage: 88 MB
% 0.20/1.30 % (1870717)------------------------------
% 0.20/1.30 % (1870717)------------------------------
% 0.20/1.30 % (1870625)Success in time 0.434 s
% 0.20/1.30 % Vampire exiting
%------------------------------------------------------------------------------