%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : SET095+1 : TPTP v9.3.1. Bugfixed v5.4.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% Computer : n005.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 12:40:04 PM UTC 2026
% Result : Theorem 3.86s 1.52s
% Output : Refutation 3.86s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 4
% Syntax : Number of formulae : 26 ( 9 unt; 0 def)
% Number of atoms : 73 ( 18 equ)
% Maximal formula atoms : 8 ( 2 avg)
% Number of connectives : 75 ( 28 ~; 26 |; 15 &)
% ( 3 <=>; 3 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 5 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 6 ( 6 usr; 3 con; 0-2 aty)
% Number of variables : 45 ( 41 !; 4 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X0,X1] :
( subclass(X0,X1)
<=> ! [X2] :
( member(X2,X0)
=> member(X2,X1) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',subclass_defn) ).
fof(f4,axiom,
! [X0,X1,X2] :
( member(X0,unordered_pair(X1,X2))
<=> ( member(X0,universal_class)
& ( X0 = X1
| X0 = X2 ) ) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',unordered_pair_defn) ).
fof(f6,axiom,
! [X0] : singleton(X0) = unordered_pair(X0,X0),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',singleton_set_defn) ).
fof(f44,conjecture,
! [X0,X1] :
( member(X0,X1)
=> subclass(singleton(X0),X1) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',property_of_singletons2) ).
fof(f45,negated_conjecture,
~ ! [X0,X1] :
( member(X0,X1)
=> subclass(singleton(X0),X1) ),
inference(negated_conjecture,[status(cth)],[f44]) ).
fof(f47,plain,
! [X0,X1] :
( subclass(X0,X1)
<=> ! [X2] :
( member(X2,X1)
| ~ member(X2,X0) ) ),
inference(ennf_transformation,[],[f1]) ).
fof(f60,plain,
? [X0,X1] :
( ~ subclass(singleton(X0),X1)
& member(X0,X1) ),
inference(ennf_transformation,[],[f45]) ).
fof(f61,plain,
! [X0,X1] :
( ( subclass(X0,X1)
| ? [X2] :
( ~ member(X2,X1)
& member(X2,X0) ) )
& ( ! [X2] :
( member(X2,X1)
| ~ member(X2,X0) )
| ~ subclass(X0,X1) ) ),
inference(nnf_transformation,[],[f47]) ).
fof(f62,plain,
! [X0,X1] :
( ( subclass(X0,X1)
| ? [X2] :
( ~ member(X2,X1)
& member(X2,X0) ) )
& ( ! [X3] :
( member(X3,X1)
| ~ member(X3,X0) )
| ~ subclass(X0,X1) ) ),
inference(rectify,[],[f61]) ).
fof(f63,plain,
! [X0,X1] :
( ( subclass(X0,X1)
| ( ~ member(sK0(X0,X1),X1)
& member(sK0(X0,X1),X0) ) )
& ( ! [X3] :
( member(X3,X1)
| ~ member(X3,X0) )
| ~ subclass(X0,X1) ) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0]),skolemize(X2,sK0(X0,X1))],[f62]) ).
fof(f66,plain,
! [X0,X1,X2] :
( ( member(X0,unordered_pair(X1,X2))
| ~ member(X0,universal_class)
| ( X0 != X1
& X0 != X2 ) )
& ( ( member(X0,universal_class)
& ( X0 = X1
| X0 = X2 ) )
| ~ member(X0,unordered_pair(X1,X2)) ) ),
inference(nnf_transformation,[],[f4]) ).
fof(f67,plain,
! [X0,X1,X2] :
( ( member(X0,unordered_pair(X1,X2))
| ~ member(X0,universal_class)
| ( X0 != X1
& X0 != X2 ) )
& ( ( member(X0,universal_class)
& ( X0 = X1
| X0 = X2 ) )
| ~ member(X0,unordered_pair(X1,X2)) ) ),
inference(flattening,[],[f66]) ).
fof(f103,plain,
( ~ subclass(singleton(sK6),sK7)
& member(sK6,sK7) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK6,sK7]),skolemize(X0,sK6),skolemize(X1,sK7)],[f60]) ).
fof(f105,plain,
! [X0,X1] :
( subclass(X0,X1)
| member(sK0(X0,X1),X0) ),
inference(cnf_transformation,[],[f63]) ).
fof(f106,plain,
! [X0,X1] :
( subclass(X0,X1)
| ~ member(sK0(X0,X1),X1) ),
inference(cnf_transformation,[],[f63]) ).
fof(f111,plain,
! [X2,X0,X1] :
( ~ member(X0,unordered_pair(X1,X2))
| X0 = X2
| X0 = X1 ),
inference(cnf_transformation,[],[f67]) ).
fof(f116,plain,
! [X0] : singleton(X0) = unordered_pair(X0,X0),
inference(cnf_transformation,[],[f6]) ).
fof(f191,plain,
member(sK6,sK7),
inference(cnf_transformation,[],[f103]) ).
fof(f192,plain,
~ subclass(singleton(sK6),sK7),
inference(cnf_transformation,[],[f103]) ).
fof(f204,plain,
member(sK0(singleton(sK6),sK7),singleton(sK6)),
inference(resolution,[],[f105,f192]) ).
fof(f205,plain,
~ member(sK0(singleton(sK6),sK7),sK7),
inference(resolution,[],[f106,f192]) ).
fof(f383,plain,
! [X0,X1] :
( ~ member(X1,singleton(X0))
| X0 = X1
| X0 = X1 ),
inference(superposition,[],[f111,f116]) ).
fof(f384,plain,
! [X0,X1] :
( ~ member(X1,singleton(X0))
| X0 = X1 ),
inference(duplicate_literal_removal,[],[f383]) ).
fof(f649,plain,
sK6 = sK0(singleton(sK6),sK7),
inference(resolution,[],[f384,f204]) ).
fof(f660,plain,
~ member(sK6,sK7),
inference(superposition,[],[f205,f649]) ).
fof(f690,plain,
$false,
inference(forward_subsumption_resolution,[],[f660,f191]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET095+1 : TPTP v9.3.1. Bugfixed v5.4.0.
% 0.00/0.06 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.12/0.38 % Computer : n005.cluster.edu
% 0.12/0.38 % Model : x86_64 x86_64
% 0.12/0.38 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.38 % Memory : 8046.5625MB
% 0.12/0.38 % OS : Linux 6.8.0-71-generic
% 0.12/0.38 % CPULimit : 300
% 0.12/0.38 % WCLimit : 300
% 0.12/0.38 % DateTime : Mon Sep 28 00:39:32 UTC 2026
% 0.12/0.39 % CPUTime :
% 0.12/0.39 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.12/0.42 Running first-order theorem proving
% 0.12/0.42 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
% 3.86/1.52 % (327720)Detected formulas, will run a generic FOF schedule.
% 3.86/1.52 % (327726)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=2654257655:i=134677:sd=20:aac=none:nm=16:ss=included:sgt=10_2999 on theBenchmark for (2999ds/134677Mi)
% 3.86/1.52 % (327727)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=2238692963:i=141695:sd=1:nm=32:gsp=on:ss=included_2999 on theBenchmark for (2999ds/141695Mi)
% 3.86/1.52 % (327729)dis-1010_2:3_sil=16000:sp=reverse_frequency:random_seed=1563429506:i=119:av=off:ss=axioms_2999 on theBenchmark for (2999ds/119Mi)
% 3.86/1.52 % (327728)lrs+1010_1_to=lpo:sil=32000:sos=on:spb=goal_then_units:bce=on:random_seed=745199414:i=109:sd=1:ins=1:gsp=on:ss=axioms_2999 on theBenchmark for (2999ds/109Mi)
% 3.86/1.52 % (327725)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=3595188560:i=141193_2999 on theBenchmark for (2999ds/141193Mi)
% 3.86/1.52 % (327731)dis-21_1_sil=8000:lcm=predicate:random_seed=3774201418: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)
% 3.86/1.52 % (327728)Refutation not found, incomplete strategy
% 3.86/1.52 % (327728)------------------------------
% 3.86/1.52 % (327728)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.86/1.52 % (327728)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.86/1.52 % (327728)CaDiCaL version: 2.1.3
% 3.86/1.52 % (327728)Termination reason: Refutation not found, incomplete strategy
% 3.86/1.52 % (327728)Time elapsed: 0.002 s
% 3.86/1.52 % (327728)Peak memory usage: 88 MB
% 3.86/1.52 % (327730)dis-1011_1_sil=16000:fde=unused:s2agt=70:random_seed=2634223714:s2a=on:i=139:gtg=position_2999 on theBenchmark for (2999ds/139Mi)
% 3.86/1.52 % (327730)First to succeed.
% 3.86/1.52 % (327730)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-327720"
% 3.86/1.52 % (327729)Instruction limit reached!
% 3.86/1.52 % (327729)------------------------------
% 3.86/1.52 % (327729)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.86/1.52 % (327729)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.86/1.52 % (327729)CaDiCaL version: 2.1.3
% 3.86/1.52 % (327729)Termination reason: Instruction limit
% 3.86/1.52 % (327729)Termination phase: Saturation
% 3.86/1.52 % (327729)Time elapsed: 0.049 s
% 3.86/1.52 % (327729)Peak memory usage: 87 MB
% 3.86/1.52 % (327729)Instructions burned: 119 (million)
% 3.86/1.52 % (327731)Instruction limit reached!
% 3.86/1.52 % (327731)------------------------------
% 3.86/1.52 % (327731)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.86/1.52 % (327731)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.86/1.52 % (327731)CaDiCaL version: 2.1.3
% 3.86/1.52 % (327731)Termination reason: Instruction limit
% 3.86/1.52 % (327731)Termination phase: Saturation
% 3.86/1.52 % (327731)Time elapsed: 0.078 s
% 3.86/1.52 % (327731)Peak memory usage: 89 MB
% 3.86/1.52 % (327731)Instructions burned: 129 (million)
% 3.86/1.52 % (327739)lrs+10_1_sil=8000:sp=occurrence:random_seed=3174963781:i=285:sd=3:ss=axioms:sgt=8_2997 on theBenchmark for (2997ds/285Mi)
% 3.86/1.52 % (327728)------------------------------
% 3.86/1.52 % (327728)------------------------------
% 3.86/1.52 % (327740)lrs+10_1_sil=32000:urr=on:br=off:random_seed=3829195507:i=157:sd=1:gtg=position:ss=axioms:sgt=8_2997 on theBenchmark for (2997ds/157Mi)
% 3.86/1.52 % (327740)Refutation not found, incomplete strategy
% 3.86/1.52 % (327740)------------------------------
% 3.86/1.52 % (327740)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.86/1.52 % (327740)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.86/1.52 % (327740)CaDiCaL version: 2.1.3
% 3.86/1.52 % (327740)Termination reason: Refutation not found, incomplete strategy
% 3.86/1.52 % (327740)Time elapsed: 0.003 s
% 3.86/1.52 % (327740)Peak memory usage: 88 MB
% 3.86/1.52 % (327740)Instructions burned: 2 (million)
% 3.86/1.52 % (327739)Also succeeded, but the first one will report.
% 3.86/1.52 % (327730)Refutation found. Thanks to Tanya!
% 3.86/1.52 % SZS status Theorem for theBenchmark
% 3.86/1.52 % SZS output start Proof for theBenchmark
% See solution above
% 3.86/1.52 % (327730)------------------------------
% 3.86/1.52 % (327730)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 3.86/1.52 % (327730)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 3.86/1.52 % (327730)CaDiCaL version: 2.1.3
% 3.86/1.52 % (327730)Termination reason: Refutation
% 3.86/1.52 % (327730)Time elapsed: 0.019 s
% 3.86/1.52 % (327730)Peak memory usage: 89 MB
% 3.86/1.52 % (327730)Instructions burned: 23 (million)
% 3.86/1.52 % (327730)------------------------------
% 3.86/1.52 % (327730)------------------------------
% 3.86/1.52 % (327720)Success in time 0.455 s
% 3.86/1.52 % Vampire exiting
%------------------------------------------------------------------------------