%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : LCL363-1 : TPTP v9.3.1. Released v2.3.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% Computer : n016.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 11:52:05 AM UTC 2026
% Result : Unsatisfiable 4.37s 2.09s
% Output : Refutation 4.37s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 5
% Syntax : Number of formulae : 15 ( 6 unt; 0 def)
% Number of atoms : 27 ( 0 equ)
% Maximal formula atoms : 3 ( 1 avg)
% Number of connectives : 26 ( 14 ~; 12 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 4 avg)
% Maximal term depth : 5 ( 2 avg)
% Number of predicates : 2 ( 1 usr; 1 prp; 0-1 aty)
% Number of functors : 4 ( 4 usr; 2 con; 0-2 aty)
% Number of variables : 29 ( 29 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X0,X1] :
( ~ is_a_theorem(implies(X0,X1))
| ~ is_a_theorem(X0)
| is_a_theorem(X1) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',condensed_detachment) ).
fof(f2,axiom,
! [X2,X0,X1] : is_a_theorem(implies(implies(X0,X1),implies(implies(X1,X2),implies(X0,X2)))),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cn_1) ).
fof(f3,axiom,
! [X0] : is_a_theorem(implies(implies(not(X0),X0),X0)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cn_2) ).
fof(f4,axiom,
! [X0,X1] : is_a_theorem(implies(X0,implies(not(X0),X1))),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cn_3) ).
fof(f5,negated_conjecture,
~ is_a_theorem(implies(x,implies(implies(not(y),y),y))),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_cn_12) ).
fof(f7,plain,
! [X0,X1] :
( is_a_theorem(implies(not(X0),X1))
| ~ is_a_theorem(X0) ),
inference(resolution,[],[f1,f4]) ).
fof(f8,plain,
! [X2,X0,X1] :
( is_a_theorem(implies(implies(X1,X2),implies(X0,X2)))
| ~ is_a_theorem(implies(X0,X1)) ),
inference(resolution,[],[f2,f1]) ).
fof(f18,plain,
! [X2,X0,X1] :
( ~ is_a_theorem(implies(X1,X2))
| ~ is_a_theorem(implies(X0,X1))
| is_a_theorem(implies(X0,X2)) ),
inference(resolution,[],[f8,f1]) ).
fof(f19,plain,
! [X0,X1] :
( ~ is_a_theorem(implies(X0,implies(not(X1),X1)))
| is_a_theorem(implies(X0,X1)) ),
inference(resolution,[],[f18,f3]) ).
fof(f21,plain,
! [X2,X3,X0,X1] :
( ~ is_a_theorem(implies(X0,implies(X1,X2)))
| is_a_theorem(implies(X0,implies(X3,X2)))
| ~ is_a_theorem(implies(X3,X1)) ),
inference(resolution,[],[f18,f8]) ).
fof(f58,plain,
! [X2,X0,X1] :
( is_a_theorem(implies(X0,implies(X1,X2)))
| ~ is_a_theorem(implies(X1,not(X0))) ),
inference(resolution,[],[f21,f4]) ).
fof(f82,plain,
! [X0,X1] :
( ~ is_a_theorem(implies(not(X0),not(X1)))
| is_a_theorem(implies(X1,X0)) ),
inference(resolution,[],[f58,f19]) ).
fof(f126,plain,
! [X0,X1] :
( is_a_theorem(implies(X0,X1))
| ~ is_a_theorem(X1) ),
inference(resolution,[],[f82,f7]) ).
fof(f150,plain,
~ is_a_theorem(implies(implies(not(y),y),y)),
inference(resolution,[],[f126,f5]) ).
fof(f151,plain,
$false,
inference(forward_subsumption_resolution,[],[f150,f3]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : LCL363-1 : TPTP v9.3.1. Released v2.3.0.
% 0.00/0.09 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.21/0.48 % Computer : n016.cluster.edu
% 0.21/0.48 % Model : x86_64 x86_64
% 0.21/0.48 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.21/0.48 % Memory : 8046.5625MB
% 0.21/0.48 % OS : Linux 6.8.0-71-generic
% 0.21/0.48 % CPULimit : 300
% 0.21/0.48 % WCLimit : 300
% 0.21/0.48 % DateTime : Sun Sep 27 15:41:02 UTC 2026
% 0.21/0.49 % CPUTime :
% 0.21/0.49 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.24/0.55 Running first-order theorem proving
% 0.24/0.55 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
% 4.37/2.09 % (2797093)Input is clausal, will run a generic CNF schedule.
% 4.37/2.09 % (2797101)lrs+10_1_sil=8000:sp=occurrence:random_seed=4284530144:i=107:sd=3:ss=axioms:sgt=8_2999 on theBenchmark for (2999ds/107Mi)
% 4.37/2.09 % (2797101)First to succeed.
% 4.37/2.09 % (2797101)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-2797093"
% 4.37/2.09 % (2797099)lrs+10_1_ncem=casc2026/models/loop8.pt:sil=128000:npcc=on:urr=on:br=off:random_seed=2761549504:i=132376:av=off_2999 on theBenchmark for (2999ds/132376Mi)
% 4.37/2.09 % (2797098)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=1795553510:i=140167_2999 on theBenchmark for (2999ds/140167Mi)
% 4.37/2.09 % (2797100)lrs+1002_1_ncem=casc2026/models/loop8.pt:sil=128000:tgt=ground:npcc=on:sp=reverse_frequency:spb=intro:random_seed=2566078859:i=137899:s2at=10:gtgl=3:kws=precedence:add=on:bd=preordered:gtg=position_2999 on theBenchmark for (2999ds/137899Mi)
% 4.37/2.09 % (2797103)dis-1011_1_sil=16000:fde=unused:s2agt=70:random_seed=985393417:s2a=on:i=180:gtg=position_2999 on theBenchmark for (2999ds/180Mi)
% 4.37/2.09 % (2797104)dis-21_1_sil=8000:lcm=predicate:random_seed=1344672579:st=5:avsq=on:i=117:avsqr=1,16:sd=3:aac=none:ep=RS:fsr=off:ss=included_2999 on theBenchmark for (2999ds/117Mi)
% 4.37/2.09 % (2797102)dis-1002_1_to=lpo:sil=16000:fd=off:random_seed=3111949825:st=1.5:i=114:aac=none:ins=7:ss=axioms:fsd=on_2999 on theBenchmark for (2999ds/114Mi)
% 4.37/2.09 % (2797102)Also succeeded, but the first one will report.
% 4.37/2.09 % (2797104)Instruction limit reached!
% 4.37/2.09 % (2797104)------------------------------
% 4.37/2.09 % (2797104)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.37/2.09 % (2797104)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.37/2.09 % (2797104)CaDiCaL version: 2.1.3
% 4.37/2.09 % (2797104)Termination reason: Instruction limit
% 4.37/2.09 % (2797104)Termination phase: Saturation
% 4.37/2.09 % (2797104)Time elapsed: 0.109 s
% 4.37/2.09 % (2797104)Peak memory usage: 88 MB
% 4.37/2.09 % (2797104)Instructions burned: 117 (million)
% 4.37/2.09 % (2797101)Refutation found. Thanks to Tanya!
% 4.37/2.09 % SZS status Unsatisfiable for theBenchmark
% 4.37/2.09 % SZS output start Proof for theBenchmark
% See solution above
% 4.37/2.09 % (2797101)------------------------------
% 4.37/2.09 % (2797101)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 4.37/2.09 % (2797101)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 4.37/2.09 % (2797101)CaDiCaL version: 2.1.3
% 4.37/2.09 % (2797101)Termination reason: Refutation
% 4.37/2.09 % (2797101)Time elapsed: 0.004 s
% 4.37/2.09 % (2797101)Peak memory usage: 88 MB
% 4.37/2.09 % (2797101)Instructions burned: 5 (million)
% 4.37/2.09 % (2797101)------------------------------
% 4.37/2.09 % (2797101)------------------------------
% 4.37/2.09 % (2797093)Success in time 0.468 s
% 4.37/2.09 % Vampire exiting
%------------------------------------------------------------------------------