%------------------------------------------------------------------------------
% File : Vampire-SAT---5.0.1
% Problem : SYN978+1 : TPTP v9.3.1. Released v3.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% Computer : n006.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 02:22:59 PM UTC 2026
% Result : Theorem 0.18s 0.26s
% Output : Refutation 0.18s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 3
% Syntax : Number of formulae : 17 ( 8 unt; 2 def)
% Number of atoms : 34 ( 0 equ)
% Maximal formula atoms : 4 ( 2 avg)
% Number of connectives : 24 ( 7 ~; 3 |; 6 &)
% ( 4 <=>; 2 =>; 0 <=; 2 <~>)
% Maximal formula depth : 4 ( 2 avg)
% Maximal term depth : 0 ( 0 avg)
% Number of predicates : 5 ( 4 usr; 5 prp; 0-0 aty)
% Number of functors : 0 ( 0 usr; 0 con; --- aty)
% Number of variables : 0 ( 0 sgn 0 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,conjecture,
( ( a
& b )
=> ( a
<=> b ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_this) ).
fof(f2,negated_conjecture,
~ ( ( a
& b )
=> ( a
<=> b ) ),
inference(negated_conjecture,[status(cth)],[f1]) ).
fof(f3,plain,
( ( a
<~> b )
& a
& b ),
inference(ennf_transformation,[],[f2]) ).
fof(f4,plain,
( ( a
<~> b )
& a
& b ),
inference(flattening,[],[f3]) ).
fof(f6,plain,
( ~ b
| ~ a ),
inference(cnf_transformation,[],[f4]) ).
fof(f7,plain,
b,
inference(cnf_transformation,[],[f4]) ).
fof(f8,plain,
a,
inference(cnf_transformation,[],[f4]) ).
fof(f10,definition,
( spl0_1
<=> a ),
introduced(definition,[new_symbols(definition,[spl0_1])],[avatar_definition]) ).
fof(f14,definition,
( spl0_2
<=> b ),
introduced(definition,[new_symbols(definition,[spl0_2])],[avatar_definition]) ).
fof(f17,plain,
( ~ spl0_1
| ~ spl0_2 ),
inference(avatar_split_clause,[],[f6,f14,f10]) ).
fof(f18,plain,
spl0_2,
inference(avatar_split_clause,[],[f7,f14]) ).
fof(f19,plain,
spl0_1,
inference(avatar_split_clause,[],[f8,f10]) ).
cnf(s1,plain,
( ~ spl0_1
| ~ spl0_2 ),
inference(sat_conversion,[],[f17]) ).
cnf(s2,plain,
spl0_2,
inference(sat_conversion,[],[f18]) ).
cnf(s3,plain,
spl0_1,
inference(sat_conversion,[],[f19]) ).
cnf(s4,plain,
$false,
inference(rat,[],[s1,s2,s3]) ).
fof(f20,plain,
$false,
inference(avatar_sat_refutation,[],[s4]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SYN978+1 : TPTP v9.3.1. Released v3.1.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% 0.08/0.19 % Computer : n006.cluster.edu
% 0.08/0.19 % Model : x86_64 x86_64
% 0.08/0.19 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.19 % Memory : 8046.5625MB
% 0.08/0.19 % OS : Linux 6.8.0-71-generic
% 0.08/0.19 % CPULimit : 300
% 0.08/0.19 % WCLimit : 300
% 0.08/0.19 % DateTime : Mon Sep 28 17:19:01 UTC 2026
% 0.08/0.20 % CPUTime :
% 0.08/0.20 Running run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% 0.08/0.23 Running first-order model finding
% 0.08/0.23 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
% 0.18/0.26 % (4126898)Will run a generic schedule for satisfiability detection.
% 0.18/0.26 % (4126920)ott+31_1_sil=16000:lcm=predicate:bce=on:newcnf=on:random_seed=3902892535:i=116_2999 on theBenchmark for (2999ds/116Mi)
% 0.18/0.26 % (4126920) found proof, printing to "/export/starexec/sandbox/tmp/vampire-proof-4126898-4126920"...
% 0.18/0.26 % (4126920)...printing done.
% 0.18/0.26 % (4126920)Refutation found. Thanks to Tanya!
% 0.18/0.26 % SZS status Theorem for theBenchmark
% 0.18/0.26 % SZS output start Proof for theBenchmark
% See solution above
% 0.18/0.26 % (4126920)------------------------------
% 0.18/0.26 % (4126920)Version: Vampire 5.0.1 (Release build, commit 5ef7c2677 on 2026-07-16 16:54:09 +0200)
% 0.18/0.26 % (4126920)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.18/0.26 % (4126920)CaDiCaL version: 2.1.3
% 0.18/0.26 % (4126920)Termination reason: Refutation
% 0.18/0.26 % (4126920)Time elapsed: 0.0000 s
% 0.18/0.26 % (4126920)Peak memory usage: 12 MB
% 0.18/0.26 % (4126898)Success in time 0.027 s
% 0.18/0.26 % Vampire exiting
%------------------------------------------------------------------------------