%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : COL042-8 : TPTP v9.3.1. Released v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/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 09:37:42 AM UTC 2026
% Result : Unsatisfiable 7.51s 1.87s
% Output : Refutation 7.51s
% Verified :
% SZS Type : Refutation
% Derivation depth : 7
% Number of leaves : 4
% Syntax : Number of formulae : 15 ( 15 unt; 0 def)
% Number of atoms : 15 ( 14 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 2 ( 2 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 4 ( 3 avg)
% Maximal term depth : 7 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 4 con; 0-2 aty)
% Number of variables : 21 ( 21 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X2,X0,X1] : apply(apply(apply(b,X0),X1),X2) = apply(X0,apply(X1,X2)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',b_definition) ).
fof(f2,axiom,
! [X0,X1] : apply(apply(w1,X0),X1) = apply(apply(X1,X0),X0),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',w1_definition) ).
fof(f3,axiom,
strong_fixed_point = apply(apply(b,apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),b))),b),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',strong_fixed_point) ).
fof(f4,negated_conjecture,
apply(strong_fixed_point,fixed_pt) != apply(fixed_pt,apply(strong_fixed_point,fixed_pt)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_strong_fixed_point) ).
fof(f12,plain,
! [X2,X0,X1] : apply(apply(w1,X2),apply(apply(b,X0),X1)) = apply(apply(X0,apply(X1,X2)),X2),
inference(superposition,[],[f2,f1]) ).
fof(f27,plain,
! [X2,X0,X1] : apply(apply(w1,X0),apply(apply(b,apply(b,X1)),X2)) = apply(X1,apply(apply(X2,X0),X0)),
inference(superposition,[],[f1,f12]) ).
fof(f45,plain,
! [X2,X0,X1] : apply(X2,apply(apply(w1,X0),X1)) = apply(apply(w1,X0),apply(apply(b,apply(b,X2)),X1)),
inference(superposition,[],[f27,f2]) ).
fof(f93,plain,
! [X0] : apply(apply(apply(b,apply(w1,w1)),apply(apply(b,apply(b,w1)),b)),apply(b,X0)) = apply(strong_fixed_point,X0),
inference(superposition,[],[f1,f3]) ).
fof(f96,plain,
! [X0] : apply(strong_fixed_point,X0) = apply(apply(w1,w1),apply(apply(apply(b,apply(b,w1)),b),apply(b,X0))),
inference(forward_demodulation,[],[f93,f1]) ).
fof(f99,plain,
! [X0] : apply(strong_fixed_point,X0) = apply(apply(w1,w1),apply(apply(b,w1),apply(b,apply(b,X0)))),
inference(forward_demodulation,[],[f96,f1]) ).
fof(f102,plain,
! [X0] : apply(strong_fixed_point,X0) = apply(apply(w1,apply(apply(b,apply(b,X0)),w1)),w1),
inference(forward_demodulation,[],[f99,f12]) ).
fof(f123,plain,
! [X0,X1] : apply(apply(w1,apply(apply(b,apply(b,X0)),X1)),w1) = apply(X0,apply(apply(w1,apply(apply(b,apply(b,X0)),X1)),X1)),
inference(superposition,[],[f2,f45]) ).
fof(f150,plain,
! [X0] : apply(strong_fixed_point,X0) = apply(X0,apply(strong_fixed_point,X0)),
inference(superposition,[],[f123,f102]) ).
fof(f206,plain,
apply(strong_fixed_point,fixed_pt) != apply(strong_fixed_point,fixed_pt),
inference(superposition,[],[f4,f150]) ).
fof(f207,plain,
$false,
inference(trivial_inequality_removal,[],[f206]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : COL042-8 : TPTP v9.3.1. Released v2.1.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.07/0.17 % Computer : n009.cluster.edu
% 0.07/0.17 % Model : x86_64 x86_64
% 0.07/0.17 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.17 % Memory : 8046.5625MB
% 0.07/0.17 % OS : Linux 6.8.0-71-generic
% 0.07/0.17 % CPULimit : 300
% 0.07/0.17 % WCLimit : 300
% 0.07/0.17 % DateTime : Mon Sep 28 21:30:30 UTC 2026
% 0.07/0.17 % CPUTime :
% 0.07/0.17 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.07/0.20 Running first-order theorem proving
% 0.07/0.20 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
% 7.51/1.87 % (3507401)Detected a unit-equality problem, will run specialized UEQ schedule.
% 7.51/1.87 % (3507528)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=240057224:i=130792:sd=20:aac=none:nm=16:ss=included:sgt=10_2999 on theBenchmark for (2999ds/130792Mi)
% 7.51/1.87 % (3507527)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=156224165:i=138329:kws=inv_arity_squared:fgj=on:bd=preordered_2999 on theBenchmark for (2999ds/138329Mi)
% 7.51/1.87 % (3507534)dis-1010_7_sil=8000:fde=unused:flr=on:random_seed=1789175922:i=1187:sd=4:av=off:ss=axioms:sgt=32_2999 on theBenchmark for (2999ds/1187Mi)
% 7.51/1.87 % (3507530)ott-1010_1_sfv=off:to=lpo:sil=8000:fdtod=off:sp=reverse_frequency:spb=goal_then_units:fd=preordered:random_seed=1067033736:i=136:bd=preordered:ins=2:av=off_2999 on theBenchmark for (2999ds/136Mi)
% 7.51/1.87 % (3507533)lrs+10_3_to=lpo:sil=64000:drc=off:fde=unused:sp=reverse_frequency:acc=on:bsr=on:fd=preordered:nwc=1:random_seed=2726083629:avsq=on:i=257:avsqr=16,3:bd=preordered:fsr=off_2999 on theBenchmark for (2999ds/257Mi)
% 7.51/1.87 % (3507531)dis+10_14_to=lpo:sil=8000:tgt=full:drc=off:sp=const_frequency:sos=all:random_seed=3125172395:i=181:gtgl=5:bs=unit_only:fsr=off:gtg=exists_all_2999 on theBenchmark for (2999ds/181Mi)
% 7.51/1.87 % (3507529)lrs+10_1_ncem=casc2026/models/loop5.pt:sil=128000:tgt=ground:npcc=on:spb=goal_then_units:urr=ec_only:random_seed=459219398:i=130716:gtgl=4:add=on:doe=on:bd=all:gtg=exists_sym_2999 on theBenchmark for (2999ds/130716Mi)
% 7.51/1.87 % (3507530)Instruction limit reached!
% 7.51/1.87 % (3507530)------------------------------
% 7.51/1.87 % (3507530)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 7.51/1.87 % (3507530)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 7.51/1.87 % (3507530)CaDiCaL version: 2.1.3
% 7.51/1.87 % (3507530)Termination reason: Instruction limit
% 7.51/1.87 % (3507530)Termination phase: Saturation
% 7.51/1.87 % (3507530)Time elapsed: 0.082 s
% 7.51/1.87 % (3507530)Peak memory usage: 89 MB
% 7.51/1.87 % (3507530)Instructions burned: 137 (million)
% 7.51/1.87 % (3507531)Instruction limit reached!
% 7.51/1.87 % (3507531)------------------------------
% 7.51/1.87 % (3507531)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 7.51/1.87 % (3507531)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 7.51/1.87 % (3507531)CaDiCaL version: 2.1.3
% 7.51/1.87 % (3507531)Termination reason: Instruction limit
% 7.51/1.87 % (3507531)Termination phase: Saturation
% 7.51/1.87 % (3507531)Time elapsed: 0.098 s
% 7.51/1.87 % (3507531)Peak memory usage: 89 MB
% 7.51/1.87 % (3507531)Instructions burned: 183 (million)
% 7.51/1.87 % (3507533)Instruction limit reached!
% 7.51/1.87 % (3507533)------------------------------
% 7.51/1.87 % (3507533)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 7.51/1.87 % (3507533)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 7.51/1.87 % (3507533)CaDiCaL version: 2.1.3
% 7.51/1.87 % (3507533)Termination reason: Instruction limit
% 7.51/1.87 % (3507533)Termination phase: Saturation
% 7.51/1.87 % (3507533)Time elapsed: 0.164 s
% 7.51/1.87 % (3507533)Peak memory usage: 91 MB
% 7.51/1.87 % (3507533)Instructions burned: 259 (million)
% 7.51/1.87 % (3507550)lrs-1011_1_ncem=casc2026/models/loop8.pt:sil=32000:npcc=on:prc=on:fde=unused:lcm=predicate:bsr=on:flr=on:random_seed=1109940005:i=2051:gtgl=2:fgj=on:bd=all:gtg=exists_top_2997 on theBenchmark for (2997ds/2051Mi)
% 7.51/1.87 % (3507551)lrs-1002_1_ncem=casc2026/models/all5champsBiggishL14.pt:sil=16000:npcc=on:random_seed=2725077444:i=4948:ss=axioms:sgt=16_2997 on theBenchmark for (2997ds/4948Mi)
% 7.51/1.87 % (3507552)lrs+10_5:1_sil=8000:sos=all:urr=on:br=off:flr=on:random_seed=3015499262:i=215:ep=RSTC_2996 on theBenchmark for (2996ds/215Mi)
% 7.51/1.87 % (3507552)Refutation not found, incomplete strategy
% 7.51/1.87 % (3507552)------------------------------
% 7.51/1.87 % (3507552)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 7.51/1.87 % (3507552)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 7.51/1.87 % (3507552)CaDiCaL version: 2.1.3
% 7.51/1.87 % (3507552)Termination reason: Refutation not found, incomplete strategy
% 7.51/1.87 % (3507552)Time elapsed: 0.002 s
% 7.51/1.87 % (3507552)Peak memory usage: 88 MB
% 7.51/1.87 % (3507552)Instructions burned: 1 (million)
% 7.51/1.87 % (3507528)First to succeed.
% 7.51/1.87 % (3507528)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-3507401"
% 7.51/1.87 % (3507552)------------------------------
% 7.51/1.87 % (3507552)------------------------------
% 7.51/1.87 % (3507534)Instruction limit reached!
% 7.51/1.87 % (3507534)------------------------------
% 7.51/1.87 % (3507534)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 7.51/1.87 % (3507534)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 7.51/1.87 % (3507534)CaDiCaL version: 2.1.3
% 7.51/1.87 % (3507534)Termination reason: Instruction limit
% 7.51/1.87 % (3507534)Termination phase: Saturation
% 7.51/1.87 % (3507534)Time elapsed: 0.739 s
% 7.51/1.87 % (3507534)Peak memory usage: 95 MB
% 7.51/1.87 % (3507534)Instructions burned: 1188 (million)
% 7.51/1.87 % (3507528)Refutation found. Thanks to Tanya!
% 7.51/1.87 % SZS status Unsatisfiable for theBenchmark
% 7.51/1.87 % SZS output start Proof for theBenchmark
% See solution above
% 7.51/1.87 % (3507528)------------------------------
% 7.51/1.87 % (3507528)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 7.51/1.87 % (3507528)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 7.51/1.87 % (3507528)CaDiCaL version: 2.1.3
% 7.51/1.87 % (3507528)Termination reason: Refutation
% 7.51/1.87 % (3507528)Time elapsed: 0.462 s
% 7.51/1.87 % (3507528)Peak memory usage: 128 MB
% 7.51/1.87 % (3507528)Instructions burned: 963 (million)
% 7.51/1.87 % (3507528)------------------------------
% 7.51/1.87 % (3507528)------------------------------
% 7.51/1.87 % (3507401)Success in time 0.994 s
% 7.51/1.87 % Vampire exiting
%------------------------------------------------------------------------------