%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : SWC386+1 : TPTP v9.3.1. Released v2.4.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% Computer : n001.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 01:03:45 PM UTC 2026
% Result : Theorem 3.35s 1.05s
% Output : Refutation 3.35s
% Verified :
% SZS Type : Refutation
% Derivation depth : 19
% Number of leaves : 3
% Syntax : Number of formulae : 40 ( 10 unt; 0 def)
% Number of atoms : 166 ( 71 equ)
% Maximal formula atoms : 17 ( 4 avg)
% Number of connectives : 199 ( 73 ~; 66 |; 45 &)
% ( 2 <=>; 13 =>; 0 <=; 0 <~>)
% Maximal formula depth : 17 ( 5 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 6 ( 4 usr; 1 prp; 0-2 aty)
% Number of functors : 7 ( 7 usr; 6 con; 0-2 aty)
% Number of variables : 41 ( 29 !; 12 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f15,axiom,
! [X0] :
( ssList(X0)
=> ! [X1] :
( ssList(X1)
=> ( neq(X0,X1)
<=> X0 != X1 ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax15) ).
fof(f38,axiom,
! [X0] :
( ssItem(X0)
=> ~ memberP(nil,X0) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',ax38) ).
fof(f96,conjecture,
! [X0] :
( ssList(X0)
=> ! [X1] :
( ssList(X1)
=> ! [X2] :
( ssList(X2)
=> ! [X3] :
( ssList(X3)
=> ( X1 != X3
| X0 != X2
| ( ! [X4] :
( ssItem(X4)
=> ( cons(X4,nil) != X2
| ~ memberP(X3,X4) ) )
& ( nil != X3
| nil != X2 ) )
| ( ( nil != X1
| nil = X0 )
& ( ~ neq(X1,nil)
| ? [X5] :
( ssItem(X5)
& cons(X5,nil) = X0
& memberP(X1,X5) ) ) ) ) ) ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1) ).
fof(f97,negated_conjecture,
~ ! [X0] :
( ssList(X0)
=> ! [X1] :
( ssList(X1)
=> ! [X2] :
( ssList(X2)
=> ! [X3] :
( ssList(X3)
=> ( X1 != X3
| X0 != X2
| ( ! [X4] :
( ssItem(X4)
=> ( cons(X4,nil) != X2
| ~ memberP(X3,X4) ) )
& ( nil != X3
| nil != X2 ) )
| ( ( nil != X1
| nil = X0 )
& ( ~ neq(X1,nil)
| ? [X5] :
( ssItem(X5)
& cons(X5,nil) = X0
& memberP(X1,X5) ) ) ) ) ) ) ) ),
inference(negated_conjecture,[status(cth)],[f96]) ).
fof(f98,plain,
? [X0] :
( ? [X1] :
( ? [X2] :
( ? [X3] :
( X1 = X3
& X0 = X2
& ( ? [X4] :
( cons(X4,nil) = X2
& memberP(X3,X4)
& ssItem(X4) )
| ( nil = X3
& nil = X2 ) )
& ( ( nil = X1
& nil != X0 )
| ( neq(X1,nil)
& ! [X5] :
( ~ ssItem(X5)
| cons(X5,nil) != X0
| ~ memberP(X1,X5) ) ) )
& ssList(X3) )
& ssList(X2) )
& ssList(X1) )
& ssList(X0) ),
inference(ennf_transformation,[],[f97]) ).
fof(f99,plain,
? [X0] :
( ? [X1] :
( ? [X2] :
( ? [X3] :
( X1 = X3
& X0 = X2
& ( ? [X4] :
( cons(X4,nil) = X2
& memberP(X3,X4)
& ssItem(X4) )
| ( nil = X3
& nil = X2 ) )
& ( ( nil = X1
& nil != X0 )
| ( neq(X1,nil)
& ! [X5] :
( ~ ssItem(X5)
| cons(X5,nil) != X0
| ~ memberP(X1,X5) ) ) )
& ssList(X3) )
& ssList(X2) )
& ssList(X1) )
& ssList(X0) ),
inference(flattening,[],[f98]) ).
fof(f107,plain,
! [X0] :
( ! [X1] :
( ( neq(X0,X1)
<=> X0 != X1 )
| ~ ssList(X1) )
| ~ ssList(X0) ),
inference(ennf_transformation,[],[f15]) ).
fof(f109,plain,
! [X0] :
( ~ memberP(nil,X0)
| ~ ssItem(X0) ),
inference(ennf_transformation,[],[f38]) ).
fof(f124,plain,
( sK1 = sK3
& sK0 = sK2
& ( ( sK2 = cons(sK4,nil)
& memberP(sK3,sK4)
& ssItem(sK4) )
| ( nil = sK3
& nil = sK2 ) )
& ( ( nil = sK1
& nil != sK0 )
| ( neq(sK1,nil)
& ! [X5] :
( ~ ssItem(X5)
| cons(X5,nil) != sK0
| ~ memberP(sK1,X5) ) ) )
& ssList(sK3)
& ssList(sK2)
& ssList(sK1)
& ssList(sK0) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0,sK1,sK2,sK3,sK4]),skolemize(X0,sK0),skolemize(X1,sK1),skolemize(X2,sK2),skolemize(X3,sK3),skolemize(X4,sK4)],[f99]) ).
fof(f127,plain,
! [X0] :
( ! [X1] :
( ( ( neq(X0,X1)
| X0 = X1 )
& ( X0 != X1
| ~ neq(X0,X1) ) )
| ~ ssList(X1) )
| ~ ssList(X0) ),
inference(nnf_transformation,[],[f107]) ).
fof(f140,plain,
ssList(sK2),
inference(cnf_transformation,[],[f124]) ).
fof(f143,plain,
( nil != sK0
| neq(sK1,nil) ),
inference(cnf_transformation,[],[f124]) ).
fof(f144,plain,
! [X5] :
( nil = sK1
| ~ ssItem(X5)
| cons(X5,nil) != sK0
| ~ memberP(sK1,X5) ),
inference(cnf_transformation,[],[f124]) ).
fof(f146,plain,
( nil = sK2
| ssItem(sK4) ),
inference(cnf_transformation,[],[f124]) ).
fof(f147,plain,
( nil = sK3
| ssItem(sK4) ),
inference(cnf_transformation,[],[f124]) ).
fof(f148,plain,
( memberP(sK3,sK4)
| nil = sK2 ),
inference(cnf_transformation,[],[f124]) ).
fof(f149,plain,
( memberP(sK3,sK4)
| nil = sK3 ),
inference(cnf_transformation,[],[f124]) ).
fof(f151,plain,
( sK2 = cons(sK4,nil)
| nil = sK3 ),
inference(cnf_transformation,[],[f124]) ).
fof(f152,plain,
sK0 = sK2,
inference(cnf_transformation,[],[f124]) ).
fof(f153,plain,
sK1 = sK3,
inference(cnf_transformation,[],[f124]) ).
fof(f165,plain,
! [X0,X1] :
( X0 != X1
| ~ neq(X0,X1)
| ~ ssList(X1)
| ~ ssList(X0) ),
inference(cnf_transformation,[],[f127]) ).
fof(f170,plain,
! [X0] :
( ~ memberP(nil,X0)
| ~ ssItem(X0) ),
inference(cnf_transformation,[],[f109]) ).
fof(f193,plain,
! [X5] :
( cons(X5,nil) != sK2
| ~ ssItem(X5)
| nil = sK3
| ~ memberP(sK3,X5) ),
inference(definition_unfolding,[],[f144,f153,f152,f153]) ).
fof(f194,plain,
( nil != sK2
| neq(sK3,nil) ),
inference(definition_unfolding,[],[f143,f152,f153]) ).
fof(f198,plain,
! [X1] :
( ~ neq(X1,X1)
| ~ ssList(X1)
| ~ ssList(X1) ),
inference(equality_resolution,[],[f165]) ).
fof(f207,plain,
! [X1] :
( ~ neq(X1,X1)
| ~ ssList(X1) ),
inference(duplicate_literal_removal,[],[f198]) ).
fof(f228,plain,
( sK2 != sK2
| ~ ssItem(sK4)
| nil = sK3
| ~ memberP(sK3,sK4)
| nil = sK3 ),
inference(superposition,[],[f193,f151]) ).
fof(f231,plain,
( sK2 != sK2
| ~ ssItem(sK4)
| nil = sK3
| ~ memberP(sK3,sK4) ),
inference(duplicate_literal_removal,[],[f228]) ).
fof(f232,plain,
( ~ ssItem(sK4)
| nil = sK3
| ~ memberP(sK3,sK4) ),
inference(trivial_inequality_removal,[],[f231]) ).
fof(f234,plain,
( nil = sK3
| ~ memberP(sK3,sK4) ),
inference(forward_subsumption_resolution,[],[f232,f147]) ).
fof(f236,plain,
nil = sK3,
inference(forward_subsumption_resolution,[],[f234,f149]) ).
fof(f249,plain,
! [X0] :
( ~ memberP(sK3,X0)
| ~ ssItem(X0) ),
inference(forward_demodulation,[],[f170,f236]) ).
fof(f251,plain,
( ~ ssItem(sK4)
| nil = sK2 ),
inference(resolution,[],[f249,f148]) ).
fof(f253,plain,
nil = sK2,
inference(forward_subsumption_resolution,[],[f251,f146]) ).
fof(f254,plain,
sK2 = sK3,
inference(superposition,[],[f253,f236]) ).
fof(f260,plain,
( sK2 != sK2
| neq(sK3,sK2) ),
inference(superposition,[],[f194,f253]) ).
fof(f262,plain,
neq(sK3,sK2),
inference(trivial_inequality_removal,[],[f260]) ).
fof(f282,plain,
neq(sK2,sK2),
inference(forward_demodulation,[],[f262,f254]) ).
fof(f283,plain,
~ ssList(sK2),
inference(resolution,[],[f282,f207]) ).
fof(f285,plain,
$false,
inference(forward_subsumption_resolution,[],[f283,f140]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SWC386+1 : TPTP v9.3.1. Released v2.4.0.
% 0.00/0.06 % Command : run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.11/0.21 % Computer : n001.cluster.edu
% 0.11/0.21 % Model : x86_64 x86_64
% 0.11/0.21 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.21 % Memory : 8046.5625MB
% 0.11/0.21 % OS : Linux 6.8.0-71-generic
% 0.11/0.21 % CPULimit : 300
% 0.11/0.21 % WCLimit : 300
% 0.11/0.21 % DateTime : Mon Sep 28 09:30:18 UTC 2026
% 0.11/0.21 % CPUTime :
% 0.11/0.21 Running run_vampire /export/starexec/sandbox/benchmark/theBenchmark.p 300 THM
% 0.11/0.24 Running first-order theorem proving
% 0.11/0.24 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
% 3.35/1.05 % (242423)Detected formulas, will run a generic FOF schedule.
% 3.35/1.05 % (242434)dis-21_1_sil=8000:lcm=predicate:random_seed=3219881233: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)
% 3.35/1.05 % (242433)dis-1011_1_sil=16000:fde=unused:s2agt=70:random_seed=2107706121:s2a=on:i=139:gtg=position_2999 on theBenchmark for (2999ds/139Mi)
% 3.35/1.05 % (242432)dis-1010_2:3_sil=16000:sp=reverse_frequency:random_seed=4020802454:i=119:av=off:ss=axioms_2999 on theBenchmark for (2999ds/119Mi)
% 3.35/1.05 % (242430)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=1849045337:i=141695:sd=1:nm=32:gsp=on:ss=included_2999 on theBenchmark for (2999ds/141695Mi)
% 3.35/1.05 % (242429)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=50994121:i=134677:sd=20:aac=none:nm=16:ss=included:sgt=10_2999 on theBenchmark for (2999ds/134677Mi)
% 3.35/1.05 % (242431)lrs+1010_1_to=lpo:sil=32000:sos=on:spb=goal_then_units:bce=on:random_seed=373743936:i=109:sd=1:ins=1:gsp=on:ss=axioms_2999 on theBenchmark for (2999ds/109Mi)
% 3.35/1.05 % (242428)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=2399967090:i=141193_2999 on theBenchmark for (2999ds/141193Mi)
% 3.35/1.05 % (242432)First to succeed.
% 3.35/1.05 % (242434)Instruction limit reached!
% 3.35/1.05 % (242434)------------------------------
% 3.35/1.05 % (242434)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.35/1.05 % (242434)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.35/1.05 % (242434)CaDiCaL version: 2.1.3
% 3.35/1.05 % (242434)Termination reason: Instruction limit
% 3.35/1.05 % (242434)Termination phase: Saturation
% 3.35/1.05 % (242434)Time elapsed: 0.041 s
% 3.35/1.05 % (242434)Peak memory usage: 91 MB
% 3.35/1.05 % (242434)Instructions burned: 132 (million)
% 3.35/1.05 % (242431)Also succeeded, but the first one will report.
% 3.35/1.05 % (242432)Solution written to "/export/starexec/sandbox/tmp/vampire-proof-242423"
% 3.35/1.05 % (242433)Also succeeded, but the first one will report.
% 3.35/1.05 % (242442)lrs+10_1_sil=8000:sp=occurrence:random_seed=860629653:i=285:sd=3:ss=axioms:sgt=8_2998 on theBenchmark for (2998ds/285Mi)
% 3.35/1.05 % (242442)Also succeeded, but the first one will report.
% 3.35/1.05 % (242432)Refutation found. Thanks to Tanya!
% 3.35/1.05 % SZS status Theorem for theBenchmark
% 3.35/1.05 % SZS output start Proof for theBenchmark
% See solution above
% 3.35/1.05 % (242432)------------------------------
% 3.35/1.05 % (242432)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.35/1.05 % (242432)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.35/1.05 % (242432)CaDiCaL version: 2.1.3
% 3.35/1.05 % (242432)Termination reason: Refutation
% 3.35/1.05 % (242432)Time elapsed: 0.005 s
% 3.35/1.05 % (242432)Peak memory usage: 88 MB
% 3.35/1.05 % (242432)Instructions burned: 5 (million)
% 3.35/1.05 % (242432)------------------------------
% 3.35/1.05 % (242432)------------------------------
% 3.35/1.05 % (242423)Success in time 0.409 s
% 3.35/1.05 % Vampire exiting
%------------------------------------------------------------------------------