%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : GRP147-1 : TPTP v9.3.1. Bugfixed v1.2.1.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% Computer : n011.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 10:13:05 AM UTC 2026
% Result : Unsatisfiable 4.76s 1.45s
% Output : Refutation 4.76s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 8
% Syntax : Number of formulae : 23 ( 23 unt; 0 def)
% Number of atoms : 23 ( 22 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 3 ( 3 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 4 ( 2 avg)
% Maximal term depth : 4 ( 1 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 3 con; 0-2 aty)
% Number of variables : 17 ( 17 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f5,axiom,
! [X0,X1] : greatest_lower_bound(X0,X1) = greatest_lower_bound(X1,X0),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',symmetry_of_glb) ).
fof(f6,axiom,
! [X0,X1] : least_upper_bound(X0,X1) = least_upper_bound(X1,X0),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',symmetry_of_lub) ).
fof(f8,axiom,
! [X2,X0,X1] : least_upper_bound(X0,least_upper_bound(X1,X2)) = least_upper_bound(least_upper_bound(X0,X1),X2),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',associativity_of_lub) ).
fof(f11,axiom,
! [X0,X1] : least_upper_bound(X0,greatest_lower_bound(X0,X1)) = X0,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',lub_absorbtion) ).
fof(f12,axiom,
! [X0,X1] : greatest_lower_bound(X0,least_upper_bound(X0,X1)) = X0,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',glb_absorbtion) ).
fof(f17,axiom,
greatest_lower_bound(a,c) = a,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax_lub1b_1) ).
fof(f18,plain,
a = greatest_lower_bound(a,c),
inference(reorient_equations,[],[f17]) ).
fof(f19,axiom,
greatest_lower_bound(b,c) = b,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax_lub1b_2) ).
fof(f20,plain,
b = greatest_lower_bound(b,c),
inference(reorient_equations,[],[f19]) ).
fof(f21,negated_conjecture,
greatest_lower_bound(least_upper_bound(a,b),c) != least_upper_bound(a,b),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_ax_lub1b) ).
fof(f22,plain,
least_upper_bound(a,b) != greatest_lower_bound(least_upper_bound(a,b),c),
inference(reorient_equations,[],[f21]) ).
fof(f23,plain,
least_upper_bound(a,b) != greatest_lower_bound(c,least_upper_bound(a,b)),
inference(superposition,[],[f22,f5]) ).
fof(f28,plain,
! [X0,X1] : least_upper_bound(X1,greatest_lower_bound(X0,X1)) = X1,
inference(superposition,[],[f11,f5]) ).
fof(f39,plain,
c = least_upper_bound(c,a),
inference(superposition,[],[f28,f18]) ).
fof(f40,plain,
c = least_upper_bound(c,b),
inference(superposition,[],[f28,f20]) ).
fof(f42,plain,
c = least_upper_bound(b,c),
inference(forward_demodulation,[],[f40,f6]) ).
fof(f43,plain,
c = least_upper_bound(a,c),
inference(forward_demodulation,[],[f39,f6]) ).
fof(f175,plain,
! [X2,X0,X1] : least_upper_bound(X0,X1) = greatest_lower_bound(least_upper_bound(X0,X1),least_upper_bound(X0,least_upper_bound(X1,X2))),
inference(superposition,[],[f12,f8]) ).
fof(f8527,plain,
! [X0] : least_upper_bound(X0,a) = greatest_lower_bound(least_upper_bound(X0,a),least_upper_bound(X0,c)),
inference(superposition,[],[f175,f43]) ).
fof(f35655,plain,
least_upper_bound(b,a) = greatest_lower_bound(least_upper_bound(b,a),c),
inference(superposition,[],[f8527,f42]) ).
fof(f35733,plain,
least_upper_bound(b,a) = greatest_lower_bound(c,least_upper_bound(b,a)),
inference(forward_demodulation,[],[f35655,f5]) ).
fof(f35754,plain,
least_upper_bound(a,b) = greatest_lower_bound(c,least_upper_bound(a,b)),
inference(forward_demodulation,[],[f35733,f6]) ).
fof(f35763,plain,
$false,
inference(forward_subsumption_resolution,[],[f35754,f23]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : GRP147-1 : TPTP v9.3.1. Bugfixed v1.2.1.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.11/0.38 % Computer : n011.cluster.edu
% 0.11/0.38 % Model : x86_64 x86_64
% 0.11/0.38 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.38 % Memory : 8046.5625MB
% 0.11/0.38 % OS : Linux 6.8.0-71-generic
% 0.11/0.38 % CPULimit : 300
% 0.11/0.38 % WCLimit : 300
% 0.11/0.38 % DateTime : Sun Sep 27 09:33:45 UTC 2026
% 0.11/0.38 % CPUTime :
% 0.11/0.38 Running run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.16/0.42 Running first-order theorem proving
% 0.16/0.42 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
% 4.76/1.45 % (2147340)Detected a unit-equality problem, will run specialized UEQ schedule.
% 4.76/1.45 % (2147353)dis-1010_7_sil=8000:fde=unused:flr=on:random_seed=3290436381:i=1187:sd=4:av=off:ss=axioms:sgt=32_2999 on theBenchmark for (2999ds/1187Mi)
% 4.76/1.45 % (2147348)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=2518039033:i=130792:sd=20:aac=none:nm=16:ss=included:sgt=10_2999 on theBenchmark for (2999ds/130792Mi)
% 4.76/1.45 % (2147347)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=1878113768:i=138329:kws=inv_arity_squared:fgj=on:bd=preordered_2999 on theBenchmark for (2999ds/138329Mi)
% 4.76/1.45 % (2147350)ott-1010_1_sfv=off:to=lpo:sil=8000:fdtod=off:sp=reverse_frequency:spb=goal_then_units:fd=preordered:random_seed=279571587:i=136:bd=preordered:ins=2:av=off_2999 on theBenchmark for (2999ds/136Mi)
% 4.76/1.45 % (2147349)lrs+10_1_ncem=casc2026/models/loop5.pt:sil=128000:tgt=ground:npcc=on:spb=goal_then_units:urr=ec_only:random_seed=2755753902:i=130716:gtgl=4:add=on:doe=on:bd=all:gtg=exists_sym_2999 on theBenchmark for (2999ds/130716Mi)
% 4.76/1.45 % (2147352)lrs+10_3_to=lpo:sil=64000:drc=off:fde=unused:sp=reverse_frequency:acc=on:bsr=on:fd=preordered:nwc=1:random_seed=378449861:avsq=on:i=257:avsqr=16,3:bd=preordered:fsr=off_2999 on theBenchmark for (2999ds/257Mi)
% 4.76/1.45 % (2147351)dis+10_14_to=lpo:sil=8000:tgt=full:drc=off:sp=const_frequency:sos=all:random_seed=3319560512:i=181:gtgl=5:bs=unit_only:fsr=off:gtg=exists_all_2999 on theBenchmark for (2999ds/181Mi)
% 4.76/1.45 % (2147350)Instruction limit reached!
% 4.76/1.45 % (2147350)------------------------------
% 4.76/1.45 % (2147350)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.76/1.45 % (2147350)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.76/1.45 % (2147350)CaDiCaL version: 2.1.3
% 4.76/1.45 % (2147350)Termination reason: Instruction limit
% 4.76/1.45 % (2147350)Termination phase: Saturation
% 4.76/1.45 % (2147350)Time elapsed: 0.084 s
% 4.76/1.45 % (2147350)Peak memory usage: 89 MB
% 4.76/1.45 % (2147350)Instructions burned: 138 (million)
% 4.76/1.45 % (2147351)Instruction limit reached!
% 4.76/1.45 % (2147351)------------------------------
% 4.76/1.45 % (2147351)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.76/1.45 % (2147351)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.76/1.45 % (2147351)CaDiCaL version: 2.1.3
% 4.76/1.45 % (2147351)Termination reason: Instruction limit
% 4.76/1.45 % (2147351)Termination phase: Saturation
% 4.76/1.45 % (2147351)Time elapsed: 0.105 s
% 4.76/1.45 % (2147351)Peak memory usage: 89 MB
% 4.76/1.45 % (2147351)Instructions burned: 182 (million)
% 4.76/1.45 % (2147352)Instruction limit reached!
% 4.76/1.45 % (2147352)------------------------------
% 4.76/1.45 % (2147352)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.76/1.45 % (2147352)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.76/1.45 % (2147352)CaDiCaL version: 2.1.3
% 4.76/1.45 % (2147352)Termination reason: Instruction limit
% 4.76/1.45 % (2147352)Termination phase: Saturation
% 4.76/1.45 % (2147352)Time elapsed: 0.161 s
% 4.76/1.45 % (2147352)Peak memory usage: 91 MB
% 4.76/1.45 % (2147352)Instructions burned: 257 (million)
% 4.76/1.45 % (2147440)lrs-1011_1_ncem=casc2026/models/loop8.pt:sil=32000:npcc=on:prc=on:fde=unused:lcm=predicate:bsr=on:flr=on:random_seed=2316959881:i=2051:gtgl=2:fgj=on:bd=all:gtg=exists_top_2997 on theBenchmark for (2997ds/2051Mi)
% 4.76/1.45 % (2147452)lrs-1002_1_ncem=casc2026/models/all5champsBiggishL14.pt:sil=16000:npcc=on:random_seed=396550622:i=4948:ss=axioms:sgt=16_2997 on theBenchmark for (2997ds/4948Mi)
% 4.76/1.45 % (2147353)First to succeed.
% 4.76/1.45 % (2147353)Solution written to "/export/starexec/sandbox/tmp/vampire-proof-2147340"
% 4.76/1.45 % (2147468)lrs+10_5:1_sil=8000:sos=all:urr=on:br=off:flr=on:random_seed=510506853:i=215:ep=RSTC_2996 on theBenchmark for (2996ds/215Mi)
% 4.76/1.45 % (2147468)Instruction limit reached!
% 4.76/1.45 % (2147468)------------------------------
% 4.76/1.45 % (2147468)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.76/1.45 % (2147468)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.76/1.45 % (2147468)CaDiCaL version: 2.1.3
% 4.76/1.45 % (2147468)Termination reason: Instruction limit
% 4.76/1.45 % (2147468)Termination phase: Saturation
% 4.76/1.45 % (2147468)Time elapsed: 0.119 s
% 4.76/1.45 % (2147468)Peak memory usage: 92 MB
% 4.76/1.45 % (2147468)Instructions burned: 215 (million)
% 4.76/1.45 % (2147353)Refutation found. Thanks to Tanya!
% 4.76/1.45 % SZS status Unsatisfiable for theBenchmark
% 4.76/1.45 % SZS output start Proof for theBenchmark
% See solution above
% 4.76/1.45 % (2147353)------------------------------
% 4.76/1.45 % (2147353)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.76/1.45 % (2147353)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.76/1.45 % (2147353)CaDiCaL version: 2.1.3
% 4.76/1.45 % (2147353)Termination reason: Refutation
% 4.76/1.45 % (2147353)Time elapsed: 0.332 s
% 4.76/1.45 % (2147353)Peak memory usage: 99 MB
% 4.76/1.45 % (2147353)Instructions burned: 1123 (million)
% 4.76/1.45 % (2147353)------------------------------
% 4.76/1.45 % (2147353)------------------------------
% 4.76/1.45 % (2147340)Success in time 0.614 s
% 4.76/1.45 % Vampire exiting
%------------------------------------------------------------------------------