%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : COL003-20 : 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 : n010.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 09:37:34 AM UTC 2026
% Result : Unsatisfiable 4.29s 1.80s
% Output : Refutation 7.77s
% Verified :
% SZS Type : Refutation
% Derivation depth : 7
% Number of leaves : 4
% Syntax : Number of formulae : 20 ( 20 unt; 0 def)
% Number of atoms : 20 ( 19 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 1 ( 1 ~; 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; 4 con; 0-2 aty)
% Number of variables : 30 ( 30 !; 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(w,X0),X1) = apply(apply(X0,X1),X1),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',w_definition) ).
fof(f3,axiom,
strong_fixed_point = apply(apply(b,apply(w,w)),apply(apply(b,apply(b,w)),apply(apply(b,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(f7,plain,
! [X0,X1] : apply(apply(apply(w,X0),X1),X1) = apply(apply(w,apply(X0,X1)),X1),
inference(superposition,[],[f2,f2]) ).
fof(f8,plain,
! [X0] : apply(apply(w,w),X0) = apply(apply(X0,X0),X0),
inference(superposition,[],[f2,f2]) ).
fof(f9,plain,
! [X0,X1] : apply(apply(w,apply(w,X0)),X1) = apply(apply(w,apply(X0,X1)),X1),
inference(forward_demodulation,[],[f7,f2]) ).
fof(f13,plain,
! [X0,X1] : apply(apply(w,apply(b,X0)),X1) = apply(X0,apply(X1,X1)),
inference(superposition,[],[f2,f1]) ).
fof(f14,plain,
! [X2,X0,X1] : apply(apply(w,apply(apply(b,X0),X1)),X2) = apply(apply(X0,apply(X1,X2)),X2),
inference(superposition,[],[f2,f1]) ).
fof(f42,plain,
! [X2,X0,X1] : apply(X0,apply(apply(X1,X1),X2)) = apply(apply(apply(w,apply(b,apply(b,X0))),X1),X2),
inference(superposition,[],[f1,f13]) ).
fof(f54,plain,
! [X0,X1] : apply(X1,apply(apply(w,w),X0)) = apply(apply(apply(w,apply(b,apply(b,X1))),X0),X0),
inference(superposition,[],[f42,f8]) ).
fof(f90,plain,
! [X0,X1] : apply(X1,apply(apply(w,w),X0)) = apply(apply(w,apply(w,apply(b,apply(b,X1)))),X0),
inference(forward_demodulation,[],[f54,f2]) ).
fof(f104,plain,
! [X0] : apply(apply(w,w),apply(apply(apply(b,apply(b,w)),apply(apply(b,b),b)),X0)) = apply(strong_fixed_point,X0),
inference(superposition,[],[f1,f3]) ).
fof(f106,plain,
! [X0] : apply(strong_fixed_point,X0) = apply(apply(w,w),apply(apply(b,w),apply(apply(apply(b,b),b),X0))),
inference(forward_demodulation,[],[f104,f1]) ).
fof(f107,plain,
! [X0] : apply(strong_fixed_point,X0) = apply(apply(w,w),apply(apply(b,w),apply(b,apply(b,X0)))),
inference(forward_demodulation,[],[f106,f1]) ).
fof(f241,plain,
! [X0,X1] : apply(apply(w,apply(w,X0)),X1) = apply(apply(w,apply(apply(b,w),X0)),X1),
inference(superposition,[],[f14,f9]) ).
fof(f277,plain,
! [X0] : apply(apply(w,w),apply(apply(b,w),X0)) = apply(apply(w,apply(w,X0)),apply(apply(b,w),X0)),
inference(superposition,[],[f241,f2]) ).
fof(f307,plain,
! [X0] : apply(apply(w,w),apply(apply(b,w),apply(b,apply(b,X0)))) = apply(X0,apply(apply(w,w),apply(apply(b,w),apply(b,apply(b,X0))))),
inference(superposition,[],[f90,f277]) ).
fof(f315,plain,
! [X0] : apply(strong_fixed_point,X0) = apply(X0,apply(strong_fixed_point,X0)),
inference(forward_demodulation,[],[f307,f107]) ).
fof(f319,plain,
$false,
inference(backward_subsumption_resolution,[],[f4,f315]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : COL003-20 : TPTP v9.3.1. Released v2.1.0.
% 0.00/0.06 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.08/0.19 % Computer : n010.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 21:29:17 UTC 2026
% 0.08/0.19 % CPUTime :
% 0.08/0.19 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.08/0.22 Running first-order theorem proving
% 0.08/0.22 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
% 4.29/1.80 % (2368931)Detected a unit-equality problem, will run specialized UEQ schedule.
% 4.29/1.80 % (2368939)ott-1010_1_sfv=off:to=lpo:sil=8000:fdtod=off:sp=reverse_frequency:spb=goal_then_units:fd=preordered:random_seed=3745775532:i=136:bd=preordered:ins=2:av=off_2999 on theBenchmark for (2999ds/136Mi)
% 4.29/1.80 % (2368936)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=761171095:i=138329:kws=inv_arity_squared:fgj=on:bd=preordered_2999 on theBenchmark for (2999ds/138329Mi)
% 4.29/1.80 % (2368941)lrs+10_3_to=lpo:sil=64000:drc=off:fde=unused:sp=reverse_frequency:acc=on:bsr=on:fd=preordered:nwc=1:random_seed=3509269429:avsq=on:i=257:avsqr=16,3:bd=preordered:fsr=off_2999 on theBenchmark for (2999ds/257Mi)
% 4.29/1.80 % (2368942)dis-1010_7_sil=8000:fde=unused:flr=on:random_seed=3678067758:i=1187:sd=4:av=off:ss=axioms:sgt=32_2999 on theBenchmark for (2999ds/1187Mi)
% 4.29/1.80 % (2368938)lrs+10_1_ncem=casc2026/models/loop5.pt:sil=128000:tgt=ground:npcc=on:spb=goal_then_units:urr=ec_only:random_seed=1954838082:i=130716:gtgl=4:add=on:doe=on:bd=all:gtg=exists_sym_2999 on theBenchmark for (2999ds/130716Mi)
% 4.29/1.80 % (2368937)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=2997118011:i=130792:sd=20:aac=none:nm=16:ss=included:sgt=10_2999 on theBenchmark for (2999ds/130792Mi)
% 4.29/1.80 % (2368940)dis+10_14_to=lpo:sil=8000:tgt=full:drc=off:sp=const_frequency:sos=all:random_seed=1939661047:i=181:gtgl=5:bs=unit_only:fsr=off:gtg=exists_all_2999 on theBenchmark for (2999ds/181Mi)
% 4.29/1.80 % (2368939)Instruction limit reached!
% 4.29/1.80 % (2368939)------------------------------
% 4.29/1.80 % (2368939)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.29/1.80 % (2368939)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.29/1.80 % (2368939)CaDiCaL version: 2.1.3
% 4.29/1.80 % (2368939)Termination reason: Instruction limit
% 4.29/1.80 % (2368939)Termination phase: Saturation
% 4.29/1.80 % (2368939)Time elapsed: 0.045 s
% 4.29/1.80 % (2368939)Peak memory usage: 89 MB
% 4.29/1.80 % (2368939)Instructions burned: 136 (million)
% 4.29/1.80 % (2368940)Instruction limit reached!
% 4.29/1.80 % (2368940)------------------------------
% 4.29/1.80 % (2368940)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.29/1.80 % (2368940)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.29/1.80 % (2368940)CaDiCaL version: 2.1.3
% 4.29/1.80 % (2368940)Termination reason: Instruction limit
% 4.29/1.80 % (2368940)Termination phase: Saturation
% 4.29/1.80 % (2368940)Time elapsed: 0.099 s
% 4.29/1.80 % (2368940)Peak memory usage: 89 MB
% 4.29/1.80 % (2368940)Instructions burned: 181 (million)
% 4.29/1.80 % (2368950)lrs-1011_1_ncem=casc2026/models/loop8.pt:sil=32000:npcc=on:prc=on:fde=unused:lcm=predicate:bsr=on:flr=on:random_seed=1831405064:i=2051:gtgl=2:fgj=on:bd=all:gtg=exists_top_2998 on theBenchmark for (2998ds/2051Mi)
% 4.29/1.80 % (2368941)Instruction limit reached!
% 4.29/1.80 % (2368941)------------------------------
% 4.29/1.80 % (2368941)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.29/1.80 % (2368941)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.29/1.80 % (2368941)CaDiCaL version: 2.1.3
% 4.29/1.80 % (2368941)Termination reason: Instruction limit
% 4.29/1.80 % (2368941)Termination phase: Saturation
% 4.29/1.80 % (2368941)Time elapsed: 0.163 s
% 4.29/1.80 % (2368941)Peak memory usage: 90 MB
% 4.29/1.80 % (2368941)Instructions burned: 257 (million)
% 4.29/1.80 % (2368951)lrs-1002_1_ncem=casc2026/models/all5champsBiggishL14.pt:sil=16000:npcc=on:random_seed=2339775039:i=4948:ss=axioms:sgt=16_2997 on theBenchmark for (2997ds/4948Mi)
% 4.29/1.80 % (2368953)lrs+10_5:1_sil=8000:sos=all:urr=on:br=off:flr=on:random_seed=547499984:i=215:ep=RSTC_2996 on theBenchmark for (2996ds/215Mi)
% 4.29/1.80 % (2368953)Refutation not found, incomplete strategy
% 4.29/1.80 % (2368953)------------------------------
% 4.29/1.80 % (2368953)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.29/1.80 % (2368953)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.29/1.80 % (2368953)CaDiCaL version: 2.1.3
% 4.29/1.80 % (2368953)Termination reason: Refutation not found, incomplete strategy
% 4.29/1.80 % (2368953)Time elapsed: 0.002 s
% 4.29/1.80 % (2368953)Peak memory usage: 88 MB
% 4.29/1.80 % (2368953)Instructions burned: 1 (million)
% 4.29/1.80 % (2368950)First to succeed.
% 4.29/1.80 % (2368950)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-2368931"
% 4.29/1.80 % (2368953)------------------------------
% 4.29/1.80 % (2368953)------------------------------
% 4.29/1.80 % (2368937)Also succeeded, but the first one will report.
% 4.29/1.80 % (2368942)Instruction limit reached!
% 4.29/1.80 % (2368942)------------------------------
% 4.29/1.80 % (2368942)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.29/1.80 % (2368942)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.29/1.80 % (2368942)CaDiCaL version: 2.1.3
% 4.29/1.80 % (2368942)Termination reason: Instruction limit
% 4.29/1.80 % (2368942)Termination phase: Saturation
% 4.29/1.80 % (2368942)Time elapsed: 0.623 s
% 4.29/1.80 % (2368942)Peak memory usage: 95 MB
% 4.29/1.80 % (2368942)Instructions burned: 1189 (million)
% 4.29/1.80 % (2368938)Also succeeded, but the first one will report.
% 4.29/1.80 % (2368956)lrs+11_1_sil=16000:tgt=full:fde=none:sp=reverse_frequency:lma=off:fs=off:acc=on:bsr=unit_only:rp=on:random_seed=327303002:avsq=on:i=317:avsqr=1,16:kws=arity_squared:add=off:fgj=on:ins=10:fsr=off:gtg=exists_sym_2992 on theBenchmark for (2992ds/317Mi)
% 4.29/1.80 % (2368957)lrs+10_1_ncem=casc2026/models/loop8.pt:sil=64000:tgt=full:npcc=on:sp=arity:lcm=predicate:urr=on:s2agt=16:br=off:random_seed=12087103:i=12125:sd=2:fgj=on:ss=axioms:sgt=64_2991 on theBenchmark for (2991ds/12125Mi)
% 4.29/1.80 % (2368950)Refutation found. Thanks to Tanya!
% 4.29/1.80 % SZS status Unsatisfiable for theBenchmark
% 4.29/1.80 % SZS output start Proof for theBenchmark
% See solution above
% 7.77/1.80 % (2368950)------------------------------
% 7.77/1.80 % (2368950)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 7.77/1.80 % (2368950)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 7.77/1.80 % (2368950)CaDiCaL version: 2.1.3
% 7.77/1.80 % (2368950)Termination reason: Refutation
% 7.77/1.80 % (2368950)Time elapsed: 0.399 s
% 7.77/1.80 % (2368950)Peak memory usage: 130 MB
% 7.77/1.80 % (2368950)Instructions burned: 1048 (million)
% 7.77/1.80 % (2368950)------------------------------
% 7.77/1.80 % (2368950)------------------------------
% 7.77/1.80 % (2368931)Success in time 1.033 s
% 7.77/1.80 % Vampire exiting
%------------------------------------------------------------------------------