%------------------------------------------------------------------------------
% File : Vampire-SAT---5.0.1
% Problem : GRP141-1 : TPTP v9.3.1. Bugfixed v1.2.1.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% Computer : n002.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 10:16:57 AM UTC 2026
% Result : Unsatisfiable 0.18s 0.46s
% Output : Refutation 0.18s
% Verified :
% SZS Type : Refutation
% Derivation depth : 6
% Number of leaves : 7
% Syntax : Number of formulae : 19 ( 19 unt; 0 def)
% Number of atoms : 19 ( 18 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 : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 3 con; 0-2 aty)
% Number of variables : 9 ( 9 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f5,axiom,
! [X0,X1] : greatest_lower_bound(X0,X1) = greatest_lower_bound(X1,X0),
file('/export/starexec/sandbox/benchmark/Axioms/GRP004-2.ax',symmetry_of_glb) ).
fof(f6,axiom,
! [X0,X1] : least_upper_bound(X0,X1) = least_upper_bound(X1,X0),
file('/export/starexec/sandbox/benchmark/Axioms/GRP004-2.ax',symmetry_of_lub) ).
fof(f7,axiom,
! [X2,X0,X1] : greatest_lower_bound(X0,greatest_lower_bound(X1,X2)) = greatest_lower_bound(greatest_lower_bound(X0,X1),X2),
file('/export/starexec/sandbox/benchmark/Axioms/GRP004-2.ax',associativity_of_glb) ).
fof(f12,axiom,
! [X0,X1] : greatest_lower_bound(X0,least_upper_bound(X0,X1)) = X0,
file('/export/starexec/sandbox/benchmark/Axioms/GRP004-2.ax',glb_absorbtion) ).
fof(f17,axiom,
least_upper_bound(a,c) = a,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax_glb1d_1) ).
fof(f18,plain,
a = least_upper_bound(a,c),
inference(reorient_equations,[],[f17]) ).
fof(f19,axiom,
least_upper_bound(b,c) = b,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax_glb1d_2) ).
fof(f20,plain,
b = least_upper_bound(b,c),
inference(reorient_equations,[],[f19]) ).
fof(f21,negated_conjecture,
greatest_lower_bound(greatest_lower_bound(a,b),c) != c,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_ax_glb1d) ).
fof(f22,plain,
c != greatest_lower_bound(greatest_lower_bound(a,b),c),
inference(reorient_equations,[],[f21]) ).
fof(f25,plain,
a = least_upper_bound(c,a),
inference(superposition,[],[f6,f18]) ).
fof(f26,plain,
b = least_upper_bound(c,b),
inference(superposition,[],[f6,f20]) ).
fof(f40,plain,
c = greatest_lower_bound(c,a),
inference(superposition,[],[f12,f25]) ).
fof(f43,plain,
c = greatest_lower_bound(c,b),
inference(superposition,[],[f12,f26]) ).
fof(f741,plain,
c != greatest_lower_bound(a,greatest_lower_bound(b,c)),
inference(superposition,[],[f22,f7]) ).
fof(f756,plain,
c != greatest_lower_bound(a,greatest_lower_bound(c,b)),
inference(forward_demodulation,[],[f741,f5]) ).
fof(f762,plain,
c != greatest_lower_bound(a,c),
inference(forward_demodulation,[],[f756,f43]) ).
fof(f764,plain,
c != greatest_lower_bound(c,a),
inference(forward_demodulation,[],[f762,f5]) ).
fof(f765,plain,
$false,
inference(forward_subsumption_resolution,[],[f764,f40]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.04 % Problem : GRP141-1 : TPTP v9.3.1. Bugfixed v1.2.1.
% 0.00/0.07 % Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% 0.14/0.39 % Computer : n002.cluster.edu
% 0.14/0.39 % Model : x86_64 x86_64
% 0.14/0.39 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.39 % Memory : 8046.5625MB
% 0.14/0.39 % OS : Linux 6.8.0-71-generic
% 0.14/0.39 % CPULimit : 300
% 0.14/0.39 % WCLimit : 300
% 0.14/0.39 % DateTime : Sun Sep 27 09:36:08 UTC 2026
% 0.14/0.40 % CPUTime :
% 0.14/0.40 Running run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 SAT
% 0.14/0.43 Running first-order model finding
% 0.14/0.43 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
% 0.18/0.46 % (3286527)Will run a generic schedule for satisfiability detection.
% 0.18/0.46 % (3286537)dis+10_161_sil=256000:plsq=on:plsqr=61199697,1048576:gs=on:alpa=true:sac=on:slsq=on:cn=on:random_seed=2445393945:i=88024:add=on:rawr=on_2999 on theBenchmark for (2999ds/88024Mi)
% 0.18/0.46 % (3286536)% WARNING: option uhcvi not known.
% 0.18/0.46 % (3286535)fmb+10_1_sas=cadical:bce=on:rp=on:random_seed=1367832731_2999 on theBenchmark for (2999ds/0Mi)
% 0.18/0.46 % (3286536)dis+11_61:31_drc=ordering:lsd=5:bsr=unit_only:rp=on:newcnf=on:random_seed=222290479:i=135531:add=off:rawr=on_2999 on theBenchmark for (2999ds/135531Mi)
% 0.18/0.46 % (3286538)dis+10_1_sil=32000:sp=arity:random_seed=3758511727:i=103:fgj=on_2999 on theBenchmark for (2999ds/103Mi)
% 0.18/0.46 % (3286539)ott+31_1_sil=16000:lcm=predicate:bce=on:newcnf=on:random_seed=3531943056:i=116_2999 on theBenchmark for (2999ds/116Mi)
% 0.18/0.46 % (3286540)ott+1_1_to=lpo:sil=16000:sp=reverse_arity:erd=off:random_seed=1113178014:i=131_2999 on theBenchmark for (2999ds/131Mi)
% 0.18/0.46 % (3286537) found proof, printing to "/export/starexec/sandbox/tmp/vampire-proof-3286527-3286537"...
% 0.18/0.46 % (3286541)ott-3_16_to=lpo:sil=16000:sp=arity:fd=off:rp=on:random_seed=4072550473:i=159:bs=unit_only:nicw=on:fsr=off:amm=off_2999 on theBenchmark for (2999ds/159Mi)
% 0.18/0.46 % (3286537)...printing done.
% 0.18/0.46 % TRYING [1]
% 0.18/0.46 % TRYING [2]
% 0.18/0.46 % (3286537)Refutation found. Thanks to Tanya!
% 0.18/0.46 % SZS status Unsatisfiable for theBenchmark
% 0.18/0.46 % SZS output start Proof for theBenchmark
% See solution above
% 0.18/0.46 % (3286537)------------------------------
% 0.18/0.46 % (3286537)Version: Vampire 5.0.1 (Release build, commit 5ef7c2677 on 2026-07-16 16:54:09 +0200)
% 0.18/0.46 % (3286537)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 0.18/0.46 % (3286537)CaDiCaL version: 2.1.3
% 0.18/0.46 % (3286537)Termination reason: Refutation
% 0.18/0.46 % (3286537)Time elapsed: 0.008 s
% 0.18/0.46 % (3286537)Peak memory usage: 11 MB
% 0.18/0.46 % (3286537)Instructions burned: 24 (million)
% 0.18/0.46 % (3286527)Success in time 0.024 s
% 0.18/0.46 % Vampire exiting
%------------------------------------------------------------------------------