%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : SET875+1 : TPTP v9.3.1. Released v3.2.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n026.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 08:33:28 AM UTC 2026
% Result : Theorem 10.68s 1.95s
% Output : CNFRefutation 10.68s
% Verified :
% SZS Type : Refutation
% Derivation depth : 5
% Number of leaves : 3
% Syntax : Number of formulae : 13 ( 6 unt; 0 def)
% Number of atoms : 22 ( 8 equ)
% Maximal formula atoms : 3 ( 1 avg)
% Number of connectives : 19 ( 10 ~; 4 |; 3 &)
% ( 2 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 6 ( 3 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 3 ( 3 usr; 2 con; 0-1 aty)
% Number of variables : 17 ( 0 sgn 9 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(d1_tarski,axiom,
! [X0,X1] :
( X1 = singleton(X0)
<=> ! [X2] :
( in(X2,X1)
<=> X2 = X0 ) ) ).
fof(l25_zfmisc_1,axiom,
! [X0,X1] :
~ ( in(X0,X1)
& disjoint(singleton(X0),X1) ) ).
fof(t16_zfmisc_1,conjecture,
! [X0,X1] :
~ ( X0 = X1
& disjoint(singleton(X0),singleton(X1)) ) ).
fof(negated_conjecture,negated_conjecture,
~ ! [X0,X1] :
~ ( X0 = X1
& disjoint(singleton(X0),singleton(X1)) ),
inference(negate_conjecture,[status(cth)],[t16_zfmisc_1]) ).
cnf(c2,plain,
( X2 != X1
| in(X2,X0)
| X0 != singleton(X1) ),
inference(clausification,[status(esa)],[d1_tarski]) ).
cnf(c7,plain,
( ~ in(X0,X1)
| ~ disjoint(singleton(X0),X1) ),
inference(clausification,[status(esa)],[l25_zfmisc_1]) ).
cnf(c11,plain,
disjoint(singleton(sK12),singleton(sK13)),
inference(clausification,[status(esa)],[negated_conjecture]) ).
cnf(c12,plain,
sK12 = sK13,
inference(clausification,[status(esa)],[negated_conjecture]) ).
cnf(d0,plain,
disjoint(singleton(sK12),singleton(sK12)),
inference(demodulation,[status(thm)],[c11,c12]) ).
cnf(d1,plain,
~ in(sK12,singleton(sK12)),
inference(resolution,[status(thm)],[c7,d0]) ).
cnf(d2,plain,
( in(X0,singleton(X1))
| X0 != X1 ),
inference(equality_resolution,[status(thm)],[c2]) ).
cnf(d3,plain,
in(X0,singleton(X0)),
inference(equality_resolution,[status(thm)],[d2]) ).
cnf(d4,plain,
$false,
inference(resolution,[status(thm)],[d3,d1]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : SET875+1 : TPTP v9.3.1. Released v3.2.0.
% 0.00/0.04 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.09/0.54 % Computer : n026.cluster.edu
% 0.09/0.54 % Model : x86_64 x86_64
% 0.09/0.54 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.54 % Memory : 8046.5625MB
% 0.09/0.54 % OS : Linux 6.8.0-71-generic
% 0.09/0.54 % CPULimit : 300
% 0.09/0.54 % WCLimit : 300
% 0.09/0.54 % DateTime : Sat Sep 26 08:26:40 UTC 2026
% 0.09/0.54 % CPUTime :
% 0.09/0.54 Running casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 10.68/1.95 % SZS status Theorem for theBenchmark.p
% 10.68/1.95 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------