%------------------------------------------------------------------------------
% File : Vampire---5.0.1
% Problem : SET864-2 : TPTP v9.3.1. Released v3.2.0.
% Transfm : none
% Format : tptp:raw
% Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% Computer : n008.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 12:42:12 PM UTC 2026
% Result : Unsatisfiable 2.50s 21.59s
% Output : Refutation 2.50s
% Verified :
% SZS Type : Refutation
% Derivation depth : 5
% Number of leaves : 6
% Syntax : Number of formulae : 12 ( 4 unt; 0 def)
% Number of atoms : 24 ( 6 equ)
% Maximal formula atoms : 4 ( 2 avg)
% Number of connectives : 27 ( 15 ~; 12 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 9 ( 4 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-3 aty)
% Number of functors : 7 ( 7 usr; 3 con; 0-2 aty)
% Number of variables : 9 ( 9 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X2,X3,X0,X1] :
( ~ c_in(X3,c_Zorn_Omaxchain(X1,X2),tc_set(tc_set(X2)))
| ~ c_in(X0,X1,tc_set(X2))
| ~ c_lessequals(c_Union(X3,X2),X0,tc_set(X2))
| c_Union(X3,X2) = X0 ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_Zorn_Omaxchain__Zorn_0) ).
fof(f2,negated_conjecture,
c_in(v_c,c_Zorn_Omaxchain(v_S,t_a),tc_set(tc_set(t_a))),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_conjecture_0) ).
fof(f3,negated_conjecture,
c_in(c_Union(v_c,t_a),v_S,tc_set(t_a)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_conjecture_2) ).
fof(f4,negated_conjecture,
! [X0] :
( c_in(v_x(X0),v_S,tc_set(t_a))
| ~ c_in(X0,v_S,tc_set(t_a)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_conjecture_3) ).
fof(f5,negated_conjecture,
! [X0] :
( c_lessequals(X0,v_x(X0),tc_set(t_a))
| ~ c_in(X0,v_S,tc_set(t_a)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_conjecture_4) ).
fof(f6,negated_conjecture,
! [X0] :
( X0 != v_x(X0)
| ~ c_in(X0,v_S,tc_set(t_a)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_conjecture_5) ).
fof(f7,plain,
! [X0] :
( v_x(X0) != X0
| ~ c_in(X0,v_S,tc_set(t_a)) ),
inference(reorient_equations,[],[f6]) ).
fof(f8,plain,
! [X0] :
( ~ c_lessequals(c_Union(v_c,t_a),X0,tc_set(t_a))
| ~ c_in(X0,v_S,tc_set(t_a))
| c_Union(v_c,t_a) = X0 ),
inference(resolution,[],[f1,f2]) ).
fof(f9,plain,
( ~ c_in(v_x(c_Union(v_c,t_a)),v_S,tc_set(t_a))
| c_Union(v_c,t_a) = v_x(c_Union(v_c,t_a))
| ~ c_in(c_Union(v_c,t_a),v_S,tc_set(t_a)) ),
inference(resolution,[],[f8,f5]) ).
fof(f10,plain,
( c_Union(v_c,t_a) = v_x(c_Union(v_c,t_a))
| ~ c_in(c_Union(v_c,t_a),v_S,tc_set(t_a)) ),
inference(forward_subsumption_resolution,[],[f9,f4]) ).
fof(f11,plain,
~ c_in(c_Union(v_c,t_a),v_S,tc_set(t_a)),
inference(forward_subsumption_resolution,[],[f10,f7]) ).
fof(f12,plain,
$false,
inference(forward_subsumption_resolution,[],[f11,f3]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : SET864-2 : TPTP v9.3.1. Released v3.2.0.
% 0.00/0.05 % Command : run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.12/20.62 % Computer : n008.cluster.edu
% 0.12/20.62 % Model : x86_64 x86_64
% 0.12/20.62 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/20.62 % Memory : 8046.5625MB
% 0.12/20.62 % OS : Linux 6.8.0-71-generic
% 0.12/20.62 % CPULimit : 300
% 0.12/20.62 % WCLimit : 300
% 0.12/20.62 % DateTime : Mon Sep 28 03:05:37 UTC 2026
% 0.12/20.62 % CPUTime :
% 0.12/20.62 Running run_vampire /export/starexec/sandbox2/benchmark/theBenchmark.p 300 THM
% 0.12/20.66 Running first-order theorem proving
% 0.12/20.66 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
% 2.50/21.59 % (1826747)Input is clausal, will run a generic CNF schedule.
% 2.50/21.59 % (1826755)lrs+10_1_sil=8000:sp=occurrence:random_seed=1115355829:i=107:sd=3:ss=axioms:sgt=8_2999 on theBenchmark for (2999ds/107Mi)
% 2.50/21.59 % (1826755)First to succeed.
% 2.50/21.59 % (1826755)Solution written to "/export/starexec/sandbox2/tmp/vampire-proof-1826747"
% 2.50/21.59 % (1826758)dis-21_1_sil=8000:lcm=predicate:random_seed=2629996206: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)
% 2.50/21.59 % (1826758)Also succeeded, but the first one will report.
% 2.50/21.59 % (1826756)dis-1002_1_to=lpo:sil=16000:fd=off:random_seed=1646503249:st=1.5:i=114:aac=none:ins=7:ss=axioms:fsd=on_2999 on theBenchmark for (2999ds/114Mi)
% 2.50/21.59 % (1826753)lrs+10_1_ncem=casc2026/models/loop8.pt:sil=128000:npcc=on:urr=on:br=off:random_seed=506148601:i=132376:av=off_2999 on theBenchmark for (2999ds/132376Mi)
% 2.50/21.59 % (1826757)dis-1011_1_sil=16000:fde=unused:s2agt=70:random_seed=4161915234:s2a=on:i=180:gtg=position_2999 on theBenchmark for (2999ds/180Mi)
% 2.50/21.59 % (1826752)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=2779876434:i=140167_2999 on theBenchmark for (2999ds/140167Mi)
% 2.50/21.59 % (1826754)lrs+1002_1_ncem=casc2026/models/loop8.pt:sil=128000:tgt=ground:npcc=on:sp=reverse_frequency:spb=intro:random_seed=1912342444:i=137899:s2at=10:gtgl=3:kws=precedence:add=on:bd=preordered:gtg=position_2999 on theBenchmark for (2999ds/137899Mi)
% 2.50/21.59 % (1826756)Also succeeded, but the first one will report.
% 2.50/21.59 % (1826757)Also succeeded, but the first one will report.
% 2.50/21.59 % (1826755)Refutation found. Thanks to Tanya!
% 2.50/21.59 % SZS status Unsatisfiable for theBenchmark
% 2.50/21.59 % SZS output start Proof for theBenchmark
% See solution above
% 2.50/21.59 % (1826755)------------------------------
% 2.50/21.59 % (1826755)Version: Vampire 5.0.1 (Release build, commit ea8961452 on 2026-07-16 15:14:34 +0200)
% 2.50/21.59 % (1826755)Linked with Z3 4.14.0.0 3c47fd96cf5645d0c42b2c819d9e9a84380aa721 z3-4.8.4-9178-g3c47fd96c
% 2.50/21.59 % (1826755)CaDiCaL version: 2.1.3
% 2.50/21.59 % (1826755)Termination reason: Refutation
% 2.50/21.59 % (1826755)Time elapsed: 0.001 s
% 2.50/21.59 % (1826755)Peak memory usage: 88 MB
% 2.50/21.59 % (1826755)Instructions burned: 1 (million)
% 2.50/21.59 % (1826755)------------------------------
% 2.50/21.59 % (1826755)------------------------------
% 2.50/21.59 % (1826747)Success in time 0.27 s
% 2.50/21.59 % Vampire exiting
%------------------------------------------------------------------------------