%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : LCL120-1 : TPTP v9.3.1. Released v1.0.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n007.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 : Sun Sep 27 07:53:49 AM UTC 2026
% Result : Unsatisfiable 9.69s 1.71s
% Output : CNFRefutation 9.69s
% Verified :
% SZS Type : Refutation
% Derivation depth : 11
% Number of leaves : 3
% Syntax : Number of clauses : 19 ( 10 unt; 0 nHn; 11 RR)
% Number of literals : 32 ( 0 equ; 16 neg)
% Maximal clause size : 3 ( 1 avg)
% Maximal term depth : 5 ( 2 avg)
% Number of predicates : 2 ( 1 usr; 1 prp; 0-1 aty)
% Number of functors : 4 ( 4 usr; 3 con; 0-2 aty)
% Number of variables : 36 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(condensed_detachment,axiom,
( 'is$ua$utheorem'(X1)
| ~ 'is$ua$utheorem'(X0)
| ~ 'is$ua$utheorem'(equivalent(X0,X1)) ) ).
cnf(qyf,axiom,
'is$ua$utheorem'(equivalent(equivalent(equivalent(X0,X1),equivalent(X0,X2)),equivalent(X2,X1))) ).
cnf(prove_xgj,negated_conjecture,
~ 'is$ua$utheorem'(equivalent(a,equivalent(equivalent(b,equivalent(c,a)),equivalent(b,c)))) ).
cnf(c0,plain,
( 'is$ua$utheorem'(X1)
| ~ 'is$ua$utheorem'(X0)
| ~ 'is$ua$utheorem'(equivalent(X0,X1)) ),
inference(clausification,[status(esa)],[condensed_detachment]) ).
cnf(c1,plain,
'is$ua$utheorem'(equivalent(equivalent(equivalent(X0,X1),equivalent(X0,X2)),equivalent(X2,X1))),
inference(clausification,[status(esa)],[qyf]) ).
cnf(c2,plain,
~ 'is$ua$utheorem'(equivalent(a,equivalent(equivalent(b,equivalent(c,a)),equivalent(b,c)))),
inference(clausification,[status(esa)],[prove_xgj]) ).
cnf(d0,plain,
( ~ 'is$ua$utheorem'(equivalent(equivalent(X2,X1),equivalent(X2,X0)))
| 'is$ua$utheorem'(equivalent(X0,X1)) ),
inference(resolution,[status(thm)],[c1,c0]) ).
cnf(d1,plain,
'is$ua$utheorem'(equivalent(X0,equivalent(X1,equivalent(X1,X0)))),
inference(resolution,[status(thm)],[d0,c1]) ).
cnf(d2,plain,
( ~ 'is$ua$utheorem'(X1)
| 'is$ua$utheorem'(equivalent(X0,equivalent(X0,X1))) ),
inference(resolution,[status(thm)],[d1,c0]) ).
cnf(d3,plain,
( ~ 'is$ua$utheorem'(X1)
| 'is$ua$utheorem'(equivalent(X1,X0))
| ~ 'is$ua$utheorem'(X0) ),
inference(resolution,[status(thm)],[d2,c0]) ).
cnf(d4,plain,
( 'is$ua$utheorem'(equivalent(X2,X1))
| ~ 'is$ua$utheorem'(equivalent(X0,X2))
| ~ 'is$ua$utheorem'(equivalent(X0,X1)) ),
inference(resolution,[status(thm)],[d3,d0]) ).
cnf(d5,plain,
'is$ua$utheorem'(equivalent(equivalent(X0,equivalent(X0,X1)),X1)),
inference(resolution,[status(thm)],[d1,d0]) ).
cnf(d6,plain,
( ~ 'is$ua$utheorem'(equivalent(X1,equivalent(X1,X0)))
| 'is$ua$utheorem'(X0) ),
inference(resolution,[status(thm)],[d5,c0]) ).
cnf(d7,plain,
'is$ua$utheorem'(equivalent(X0,X0)),
inference(resolution,[status(thm)],[d6,d1]) ).
cnf(d8,plain,
( ~ 'is$ua$utheorem'(equivalent(X1,X0))
| 'is$ua$utheorem'(equivalent(X0,X1)) ),
inference(resolution,[status(thm)],[d4,d7]) ).
cnf(d9,plain,
'is$ua$utheorem'(equivalent(equivalent(X0,X1),equivalent(equivalent(X2,X1),equivalent(X2,X0)))),
inference(resolution,[status(thm)],[d8,c1]) ).
cnf(d10,plain,
( ~ 'is$ua$utheorem'(equivalent(equivalent(X3,X2),X0))
| 'is$ua$utheorem'(equivalent(X0,equivalent(equivalent(X1,X2),equivalent(X1,X3)))) ),
inference(resolution,[status(thm)],[d9,d4]) ).
cnf(d11,plain,
~ 'is$ua$utheorem'(equivalent(equivalent(c,equivalent(c,a)),a)),
inference(resolution,[status(thm)],[d10,c2]) ).
cnf(d12,plain,
$false,
inference(resolution,[status(thm)],[d5,d11]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : LCL120-1 : TPTP v9.3.1. Released v1.0.0.
% 0.00/0.04 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/0.34 % Computer : n007.cluster.edu
% 0.08/0.34 % Model : x86_64 x86_64
% 0.08/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.34 % Memory : 8046.5625MB
% 0.08/0.34 % OS : Linux 6.8.0-71-generic
% 0.08/0.35 % CPULimit : 300
% 0.08/0.35 % WCLimit : 300
% 0.08/0.35 % DateTime : Fri Sep 25 21:51:09 UTC 2026
% 0.08/0.35 % CPUTime :
% 0.08/0.35 Running casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 9.69/1.71 % SZS status Unsatisfiable for theBenchmark.p
% 9.69/1.71 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------