%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : ALG019+1 : TPTP v9.3.1. Released v2.7.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% Computer : n019.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 09:07:34 AM UTC 2026
% Result : Theorem 2.48s 1.10s
% Output : Refutation 2.48s
% Verified :
% SZS Type : Refutation
% Derivation depth : 17
% Number of leaves : 6
% Syntax : Number of formulae : 47 ( 8 unt; 2 def)
% Number of atoms : 164 ( 37 equ)
% Maximal formula atoms : 14 ( 3 avg)
% Number of connectives : 195 ( 78 ~; 62 |; 30 &)
% ( 2 <=>; 23 =>; 0 <=; 0 <~>)
% Maximal formula depth : 11 ( 5 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 6 ( 4 usr; 3 prp; 0-2 aty)
% Number of functors : 6 ( 6 usr; 1 con; 0-2 aty)
% Number of variables : 77 ( 0 sgn 72 !; 5 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X0] :
( sorti1(X0)
=> ! [X1] :
( sorti1(X1)
=> sorti1(op1(X0,X1)) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',ax1) ).
fof(f3,axiom,
~ ? [X0] :
( sorti1(X0)
& ! [X1] :
( sorti1(X1)
=> op1(X1,X1) = X0 ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',ax3) ).
fof(f4,axiom,
~ ~ ? [X0] :
( sorti2(X0)
& ! [X1] :
( sorti2(X1)
=> op2(X1,X1) = X0 ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',ax4) ).
fof(f5,conjecture,
( ( ! [X0] :
( sorti1(X0)
=> sorti2(h(X0)) )
& ! [X1] :
( sorti2(X1)
=> sorti1(j(X1)) ) )
=> ~ ( ! [X2] :
( sorti1(X2)
=> ! [X3] :
( sorti1(X3)
=> h(op1(X2,X3)) = op2(h(X2),h(X3)) ) )
& ! [X4] :
( sorti2(X4)
=> ! [X5] :
( sorti2(X5)
=> j(op2(X4,X5)) = op1(j(X4),j(X5)) ) )
& ! [X6] :
( sorti2(X6)
=> h(j(X6)) = X6 )
& ! [X7] :
( sorti1(X7)
=> j(h(X7)) = X7 ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1) ).
fof(f6,negated_conjecture,
~ ( ( ! [X0] :
( sorti1(X0)
=> sorti2(h(X0)) )
& ! [X1] :
( sorti2(X1)
=> sorti1(j(X1)) ) )
=> ~ ( ! [X2] :
( sorti1(X2)
=> ! [X3] :
( sorti1(X3)
=> h(op1(X2,X3)) = op2(h(X2),h(X3)) ) )
& ! [X4] :
( sorti2(X4)
=> ! [X5] :
( sorti2(X5)
=> j(op2(X4,X5)) = op1(j(X4),j(X5)) ) )
& ! [X6] :
( sorti2(X6)
=> h(j(X6)) = X6 )
& ! [X7] :
( sorti1(X7)
=> j(h(X7)) = X7 ) ) ),
inference(negated_conjecture,[status(cth)],[f5]) ).
fof(f7,plain,
? [X0] :
( sorti2(X0)
& ! [X1] :
( sorti2(X1)
=> op2(X1,X1) = X0 ) ),
inference(flattening,[],[f4]) ).
fof(f8,plain,
( ! [X2] :
( ! [X3] :
( h(op1(X2,X3)) = op2(h(X2),h(X3))
| ~ sorti1(X3) )
| ~ sorti1(X2) )
& ! [X4] :
( ! [X5] :
( j(op2(X4,X5)) = op1(j(X4),j(X5))
| ~ sorti2(X5) )
| ~ sorti2(X4) )
& ! [X6] :
( h(j(X6)) = X6
| ~ sorti2(X6) )
& ! [X7] :
( j(h(X7)) = X7
| ~ sorti1(X7) )
& ! [X0] :
( sorti2(h(X0))
| ~ sorti1(X0) )
& ! [X1] :
( sorti1(j(X1))
| ~ sorti2(X1) ) ),
inference(ennf_transformation,[],[f6]) ).
fof(f9,plain,
( ! [X2] :
( ! [X3] :
( h(op1(X2,X3)) = op2(h(X2),h(X3))
| ~ sorti1(X3) )
| ~ sorti1(X2) )
& ! [X4] :
( ! [X5] :
( j(op2(X4,X5)) = op1(j(X4),j(X5))
| ~ sorti2(X5) )
| ~ sorti2(X4) )
& ! [X6] :
( h(j(X6)) = X6
| ~ sorti2(X6) )
& ! [X7] :
( j(h(X7)) = X7
| ~ sorti1(X7) )
& ! [X0] :
( sorti2(h(X0))
| ~ sorti1(X0) )
& ! [X1] :
( sorti1(j(X1))
| ~ sorti2(X1) ) ),
inference(flattening,[],[f8]) ).
fof(f10,plain,
? [X0] :
( sorti2(X0)
& ! [X1] :
( op2(X1,X1) = X0
| ~ sorti2(X1) ) ),
inference(ennf_transformation,[],[f7]) ).
fof(f11,plain,
! [X0] :
( ~ sorti1(X0)
| ? [X1] :
( op1(X1,X1) != X0
& sorti1(X1) ) ),
inference(ennf_transformation,[],[f3]) ).
fof(f12,plain,
! [X0] :
( ! [X1] :
( sorti1(op1(X0,X1))
| ~ sorti1(X1) )
| ~ sorti1(X0) ),
inference(ennf_transformation,[],[f1]) ).
fof(f14,plain,
( ! [X0] :
( ! [X1] :
( h(op1(X0,X1)) = op2(h(X0),h(X1))
| ~ sorti1(X1) )
| ~ sorti1(X0) )
& ! [X2] :
( ! [X3] :
( j(op2(X2,X3)) = op1(j(X2),j(X3))
| ~ sorti2(X3) )
| ~ sorti2(X2) )
& ! [X4] :
( h(j(X4)) = X4
| ~ sorti2(X4) )
& ! [X5] :
( j(h(X5)) = X5
| ~ sorti1(X5) )
& ! [X6] :
( sorti2(h(X6))
| ~ sorti1(X6) )
& ! [X7] :
( sorti1(j(X7))
| ~ sorti2(X7) ) ),
inference(rectify,[],[f9]) ).
fof(f15,plain,
( sorti2(sK0)
& ! [X1] :
( op2(X1,X1) = sK0
| ~ sorti2(X1) ) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0]),skolemize(X0,sK0)],[f10]) ).
fof(f16,plain,
! [X0] :
( ~ sorti1(X0)
| ( op1(sK1(X0),sK1(X0)) != X0
& sorti1(sK1(X0)) ) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK1]),skolemize(X1,sK1(X0))],[f11]) ).
fof(f17,plain,
! [X7] :
( sorti1(j(X7))
| ~ sorti2(X7) ),
inference(cnf_transformation,[],[f14]) ).
fof(f18,plain,
! [X6] :
( sorti2(h(X6))
| ~ sorti1(X6) ),
inference(cnf_transformation,[],[f14]) ).
fof(f19,plain,
! [X5] :
( j(h(X5)) = X5
| ~ sorti1(X5) ),
inference(cnf_transformation,[],[f14]) ).
fof(f21,plain,
! [X2,X3] :
( j(op2(X2,X3)) = op1(j(X2),j(X3))
| ~ sorti2(X3)
| ~ sorti2(X2) ),
inference(cnf_transformation,[],[f14]) ).
fof(f23,plain,
! [X1] :
( op2(X1,X1) = sK0
| ~ sorti2(X1) ),
inference(cnf_transformation,[],[f15]) ).
fof(f24,plain,
sorti2(sK0),
inference(cnf_transformation,[],[f15]) ).
fof(f25,plain,
! [X0] :
( sorti1(sK1(X0))
| ~ sorti1(X0) ),
inference(cnf_transformation,[],[f16]) ).
fof(f26,plain,
! [X0] :
( op1(sK1(X0),sK1(X0)) != X0
| ~ sorti1(X0) ),
inference(cnf_transformation,[],[f16]) ).
fof(f27,plain,
! [X0,X1] :
( sorti1(op1(X0,X1))
| ~ sorti1(X1)
| ~ sorti1(X0) ),
inference(cnf_transformation,[],[f12]) ).
fof(f31,plain,
! [X0] :
( j(sK0) = op1(j(X0),j(X0))
| ~ sorti2(X0)
| ~ sorti2(X0)
| ~ sorti2(X0) ),
inference(superposition,[],[f21,f23]) ).
fof(f34,plain,
! [X0] :
( j(sK0) = op1(j(X0),j(X0))
| ~ sorti2(X0) ),
inference(duplicate_literal_removal,[],[f31]) ).
fof(f59,plain,
! [X0] :
( j(sK0) = op1(X0,X0)
| ~ sorti2(h(X0))
| ~ sorti1(X0) ),
inference(superposition,[],[f34,f19]) ).
fof(f62,plain,
! [X0] :
( sorti1(j(sK0))
| ~ sorti1(j(X0))
| ~ sorti1(j(X0))
| ~ sorti2(X0) ),
inference(superposition,[],[f27,f34]) ).
fof(f64,plain,
! [X0] :
( sorti1(j(sK0))
| ~ sorti1(j(X0))
| ~ sorti2(X0) ),
inference(duplicate_literal_removal,[],[f62]) ).
fof(f67,plain,
! [X0] :
( sorti1(j(sK0))
| ~ sorti2(X0) ),
inference(forward_subsumption_resolution,[],[f64,f17]) ).
fof(f70,plain,
! [X0] :
( j(sK0) = op1(X0,X0)
| ~ sorti1(X0) ),
inference(forward_subsumption_resolution,[],[f59,f18]) ).
fof(f72,definition,
( spl2_1
<=> ! [X0] : ~ sorti2(X0) ),
introduced(definition,[new_symbols(definition,[spl2_1])],[avatar_definition]) ).
fof(f73,plain,
( ! [X0] : ~ sorti2(X0)
| ~ spl2_1 ),
inference(avatar_component_clause,[],[f72]) ).
fof(f80,definition,
( spl2_3
<=> sorti1(j(sK0)) ),
introduced(definition,[new_symbols(definition,[spl2_3])],[avatar_definition]) ).
fof(f82,plain,
( sorti1(j(sK0))
| ~ spl2_3 ),
inference(avatar_component_clause,[],[f80]) ).
fof(f83,plain,
( spl2_1
| spl2_3 ),
inference(avatar_split_clause,[],[f67,f80,f72]) ).
fof(f147,plain,
! [X0] :
( j(sK0) != X0
| ~ sorti1(X0)
| ~ sorti1(sK1(X0)) ),
inference(superposition,[],[f26,f70]) ).
fof(f158,plain,
! [X0] :
( j(sK0) != X0
| ~ sorti1(X0) ),
inference(forward_subsumption_resolution,[],[f147,f25]) ).
fof(f193,plain,
~ sorti1(j(sK0)),
inference(equality_resolution,[],[f158]) ).
fof(f194,plain,
( $false
| ~ spl2_3 ),
inference(forward_subsumption_resolution,[],[f193,f82]) ).
fof(f195,plain,
~ spl2_3,
inference(avatar_contradiction_clause,[],[f194]) ).
fof(f220,plain,
( $false
| ~ spl2_1 ),
inference(resolution,[],[f73,f24]) ).
fof(f224,plain,
~ spl2_1,
inference(avatar_contradiction_clause,[],[f220]) ).
cnf(s2,plain,
( spl2_1
| spl2_3 ),
inference(sat_conversion,[],[f83]) ).
cnf(s4,plain,
~ spl2_3,
inference(sat_conversion,[],[f195]) ).
cnf(s5,plain,
~ spl2_1,
inference(sat_conversion,[],[f224]) ).
cnf(s7,plain,
$false,
inference(rat,[],[s2,s4,s5]) ).
fof(f225,plain,
$false,
inference(avatar_sat_refutation,[],[s7]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : ALG019+1 : TPTP v9.3.1. Released v2.7.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.10/0.16 % Computer : n019.cluster.edu
% 0.10/0.16 % Model : x86_64 x86_64
% 0.10/0.16 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.16 % Memory : 8046.5625MB
% 0.10/0.16 % OS : Linux 6.8.0-71-generic
% 0.10/0.16 % CPULimit : 300
% 0.10/0.16 % WCLimit : 300
% 0.10/0.16 % DateTime : Mon Sep 28 19:18:48 UTC 2026
% 0.10/0.17 % CPUTime :
% 0.10/0.17 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.10/0.20 Running first-order theorem proving
% 0.10/0.20 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
% 2.48/1.10 % (135763)Detected formulas, will run a generic FOF schedule.
% 2.48/1.10 % (135771)lrs+1010_1_to=lpo:sil=32000:sos=on:spb=goal_then_units:bce=on:random_seed=716862757:i=109:sd=1:ins=1:gsp=on:ss=axioms_2999 on theBenchmark for (2999ds/109Mi)
% 2.48/1.10 % (135771)First to succeed.
% 2.48/1.10 % (135771)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-135763"
% 2.48/1.10 % (135773)dis-1011_1_sil=16000:fde=unused:s2agt=70:random_seed=689551572:s2a=on:i=139:gtg=position_2999 on theBenchmark for (2999ds/139Mi)
% 2.48/1.10 % (135772)dis-1010_2:3_sil=16000:sp=reverse_frequency:random_seed=3704500430:i=119:av=off:ss=axioms_2999 on theBenchmark for (2999ds/119Mi)
% 2.48/1.10 % (135774)dis-21_1_sil=8000:lcm=predicate:random_seed=3695336546:st=5:avsq=on:i=129:avsqr=1,16:sd=3:aac=none:ep=RS:fsr=off:ss=included_2999 on theBenchmark for (2999ds/129Mi)
% 2.48/1.10 % (135770)lrs+1010_1_anc=all:sfv=off:to=kbo:ncem=casc2026/models/loop7.pt:sil=128000:npcc=on:prc=on:sos=all:bsr=unit_only:sac=on:random_seed=359802072:i=141695:sd=1:nm=32:gsp=on:ss=included_2999 on theBenchmark for (2999ds/141695Mi)
% 2.48/1.10 % (135769)lrs+11_1_ncem=casc2026/models/loop8.pt:sil=128000:npcc=on:lma=off:spb=units:urr=ec_only:bce=on:s2agt=64:updr=off:random_seed=543015396:i=134677:sd=20:aac=none:nm=16:ss=included:sgt=10_2999 on theBenchmark for (2999ds/134677Mi)
% 2.48/1.10 % (135768)lrs+10_1_ncem=casc2026/models/loop8.pt:sil=128000:tgt=full:npcc=on:drc=off:sp=weighted_frequency:spb=goal:fd=preordered:foolp=on:random_seed=1567624438:i=141193_2999 on theBenchmark for (2999ds/141193Mi)
% 2.48/1.10 % (135774)Refutation not found, incomplete strategy
% 2.48/1.10 % (135774)------------------------------
% 2.48/1.10 % (135774)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 2.48/1.10 % (135774)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 2.48/1.10 % (135774)CaDiCaL version: 2.1.3
% 2.48/1.10 % (135774)Termination reason: Refutation not found, incomplete strategy
% 2.48/1.10 % (135774)Time elapsed: 0.001 s
% 2.48/1.10 % (135774)Peak memory usage: 88 MB
% 2.48/1.10 % (135772)Also succeeded, but the first one will report.
% 2.48/1.10 % (135773)Instruction limit reached!
% 2.48/1.10 % (135773)------------------------------
% 2.48/1.10 % (135773)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 2.48/1.10 % (135773)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 2.48/1.10 % (135773)CaDiCaL version: 2.1.3
% 2.48/1.10 % (135773)Termination reason: Instruction limit
% 2.48/1.10 % (135773)Termination phase: Saturation
% 2.48/1.10 % (135773)Time elapsed: 0.084 s
% 2.48/1.10 % (135773)Peak memory usage: 90 MB
% 2.48/1.10 % (135773)Instructions burned: 140 (million)
% 2.48/1.10 % (135771)Refutation found. Thanks to Tanya!
% 2.48/1.10 % SZS status Theorem for theBenchmark
% 2.48/1.10 % SZS output start Proof for theBenchmark
% See solution above
% 2.48/1.10 % (135771)------------------------------
% 2.48/1.10 % (135771)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 2.48/1.10 % (135771)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 2.48/1.10 % (135771)CaDiCaL version: 2.1.3
% 2.48/1.10 % (135771)Termination reason: Refutation
% 2.48/1.10 % (135771)Time elapsed: 0.003 s
% 2.48/1.10 % (135771)Peak memory usage: 89 MB
% 2.48/1.10 % (135771)Instructions burned: 7 (million)
% 2.48/1.10 % (135771)------------------------------
% 2.48/1.10 % (135771)------------------------------
% 2.48/1.10 % (135763)Success in time 0.269 s
% 2.48/1.10 % Vampire exiting
%------------------------------------------------------------------------------