%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : REL049-1 : TPTP v9.3.1. Released v4.0.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% Computer : n009.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 12:34:08 PM UTC 2026
% Result : Unsatisfiable 5.32s 1.88s
% Output : Refutation 5.32s
% Verified :
% SZS Type : Refutation
% Derivation depth : 4
% Number of leaves : 5
% Syntax : Number of formulae : 13 ( 13 unt; 1 def)
% Number of atoms : 13 ( 7 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 6 ( 6 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 4 ( 2 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 3 ( 1 usr; 1 prp; 0-2 aty)
% Number of functors : 4 ( 4 usr; 3 con; 0-2 aty)
% Number of variables : 3 ( 3 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f2,axiom,
! [X2,X0,X1] : join(X0,join(X1,X2)) = join(join(X0,X1),X2),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',maddux2_join_associativity_2) ).
fof(f17,negated_conjecture,
join(sk1,sk2) = sk2,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',goals_14) ).
fof(f18,plain,
sk2 = join(sk1,sk2),
inference(reorient_equations,[],[f17]) ).
fof(f19,negated_conjecture,
join(sk3,sk2) = sk2,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',goals_15) ).
fof(f20,plain,
sk2 = join(sk3,sk2),
inference(reorient_equations,[],[f19]) ).
fof(f21,negated_conjecture,
join(join(sk1,sk3),sk2) != sk2,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',goals_16) ).
fof(f22,plain,
sk2 != join(join(sk1,sk3),sk2),
inference(reorient_equations,[],[f21]) ).
fof(f24,definition,
~ sP0(join(join(sk1,sk3),sk2)),
introduced(definition,[new_symbols(definition,[sP0])],[inequality_splitting_name_introduction]) ).
fof(f25,plain,
sP0(sk2),
inference(inequality_splitting,[],[f22,f24]) ).
fof(f27,plain,
~ sP0(join(sk1,join(sk3,sk2))),
inference(backward_demodulation,[],[f24,f2]) ).
fof(f28,plain,
~ sP0(join(sk1,sk2)),
inference(forward_demodulation,[],[f27,f20]) ).
fof(f29,plain,
~ sP0(sk2),
inference(forward_demodulation,[],[f28,f18]) ).
fof(f30,plain,
$false,
inference(forward_subsumption_resolution,[],[f29,f25]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : REL049-1 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.06 % Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.16/0.42 % Computer : n009.cluster.edu
% 0.16/0.42 % Model : x86_64 x86_64
% 0.16/0.42 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.16/0.42 % Memory : 8046.5625MB
% 0.16/0.42 % OS : Linux 6.8.0-71-generic
% 0.16/0.42 % CPULimit : 300
% 0.16/0.42 % WCLimit : 300
% 0.16/0.42 % DateTime : Sun Sep 27 22:57:00 UTC 2026
% 0.16/0.42 % CPUTime :
% 0.16/0.42 Running run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.23/0.48 Running first-order theorem proving
% 0.23/0.48 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
% 5.32/1.88 % (2499581)Detected a unit-equality problem, will run specialized UEQ schedule.
% 5.32/1.88 % (2499586)lrs+1002_1_ncem=casc2026/models/loop7.pt:sil=128000:tgt=ground:npcc=on:drc=off:sp=reverse_frequency:spb=goal:acc=on:s2agt=16:kmz=on:sac=on:random_seed=2944179500:i=138329:kws=inv_arity_squared:fgj=on:bd=preordered_2999 on theBenchmark for (2999ds/138329Mi)
% 5.32/1.88 % (2499589)ott-1010_1_sfv=off:to=lpo:sil=8000:fdtod=off:sp=reverse_frequency:spb=goal_then_units:fd=preordered:random_seed=2893394152:i=136:bd=preordered:ins=2:av=off_2999 on theBenchmark for (2999ds/136Mi)
% 5.32/1.88 % (2499592)dis-1010_7_sil=8000:fde=unused:flr=on:random_seed=4032778193:i=1187:sd=4:av=off:ss=axioms:sgt=32_2999 on theBenchmark for (2999ds/1187Mi)
% 5.32/1.88 % (2499588)lrs+10_1_ncem=casc2026/models/loop5.pt:sil=128000:tgt=ground:npcc=on:spb=goal_then_units:urr=ec_only:random_seed=2676381738:i=130716:gtgl=4:add=on:doe=on:bd=all:gtg=exists_sym_2999 on theBenchmark for (2999ds/130716Mi)
% 5.32/1.88 % (2499591)lrs+10_3_to=lpo:sil=64000:drc=off:fde=unused:sp=reverse_frequency:acc=on:bsr=on:fd=preordered:nwc=1:random_seed=2325427802:avsq=on:i=257:avsqr=16,3:bd=preordered:fsr=off_2999 on theBenchmark for (2999ds/257Mi)
% 5.32/1.88 % (2499587)lrs+11_1_ncem=casc2026/models/loop6.pt:sil=128000:npcc=on:lma=off:spb=units:urr=ec_only:bce=on:s2agt=64:updr=off:random_seed=2018912303:i=130792:sd=20:aac=none:nm=16:ss=included:sgt=10_2999 on theBenchmark for (2999ds/130792Mi)
% 5.32/1.88 % (2499590)dis+10_14_to=lpo:sil=8000:tgt=full:drc=off:sp=const_frequency:sos=all:random_seed=2929695618:i=181:gtgl=5:bs=unit_only:fsr=off:gtg=exists_all_2999 on theBenchmark for (2999ds/181Mi)
% 5.32/1.88 % (2499589)First to succeed.
% 5.32/1.88 % (2499589)Solution written to "/export/starexec/sandbox/tmp/vampire-proof-2499581"
% 5.32/1.88 % (2499591)Also succeeded, but the first one will report.
% 5.32/1.88 % (2499592)Also succeeded, but the first one will report.
% 5.32/1.88 % (2499590)Also succeeded, but the first one will report.
% 5.32/1.88 % (2499589)Refutation found. Thanks to Tanya!
% 5.32/1.88 % SZS status Unsatisfiable for theBenchmark
% 5.32/1.88 % SZS output start Proof for theBenchmark
% See solution above
% 5.32/1.88 % (2499589)------------------------------
% 5.32/1.88 % (2499589)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 5.32/1.88 % (2499589)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 5.32/1.88 % (2499589)CaDiCaL version: 2.1.3
% 5.32/1.88 % (2499589)Termination reason: Refutation
% 5.32/1.88 % (2499589)Time elapsed: 0.002 s
% 5.32/1.88 % (2499589)Peak memory usage: 87 MB
% 5.32/1.88 % (2499589)Instructions burned: 1 (million)
% 5.32/1.88 % (2499589)------------------------------
% 5.32/1.88 % (2499589)------------------------------
% 5.32/1.88 % (2499581)Success in time 0.642 s
% 5.32/1.88 % Vampire exiting
%------------------------------------------------------------------------------