%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : SEU144+1 : TPTP v9.3.1. Released v3.3.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 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 : Sun Sep 27 08:41:00 AM UTC 2026
% Result : Theorem 9.54s 1.66s
% Output : CNFRefutation 9.54s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 3
% Syntax : Number of formulae : 22 ( 5 unt; 0 def)
% Number of atoms : 45 ( 10 equ)
% Maximal formula atoms : 3 ( 2 avg)
% Number of connectives : 38 ( 15 ~; 17 |; 0 &)
% ( 5 <=>; 1 =>; 0 <=; 0 <~>)
% Maximal formula depth : 6 ( 3 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 4 ( 4 usr; 2 con; 0-2 aty)
% Number of variables : 31 ( 0 sgn 10 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(d1_tarski,axiom,
! [X0,X1] :
( X1 = singleton(X0)
<=> ! [X2] :
( in(X2,X1)
<=> X2 = X0 ) ) ).
fof(d3_tarski,axiom,
! [X0,X1] :
( subset(X0,X1)
<=> ! [X2] :
( in(X2,X0)
=> in(X2,X1) ) ) ).
fof(l2_zfmisc_1,conjecture,
! [X0,X1] :
( subset(singleton(X0),X1)
<=> in(X0,X1) ) ).
fof(negated_conjecture,negated_conjecture,
~ ! [X0,X1] :
( subset(singleton(X0),X1)
<=> in(X0,X1) ),
inference(negate_conjecture,[status(cth)],[l2_zfmisc_1]) ).
cnf(c1,plain,
( X2 = X1
| ~ in(X2,X0)
| X0 != singleton(X1) ),
inference(clausification,[status(esa)],[d1_tarski]) ).
cnf(c2,plain,
( X2 != X1
| in(X2,X0)
| X0 != singleton(X1) ),
inference(clausification,[status(esa)],[d1_tarski]) ).
cnf(c7,plain,
( in(X2,X1)
| ~ in(X2,X0)
| ~ subset(X0,X1) ),
inference(clausification,[status(esa)],[d3_tarski]) ).
cnf(c8,plain,
( in(sK9(X0,X1),X0)
| subset(X0,X1) ),
inference(clausification,[status(esa)],[d3_tarski]) ).
cnf(c9,plain,
( ~ in(sK9(X0,X1),X1)
| subset(X0,X1) ),
inference(clausification,[status(esa)],[d3_tarski]) ).
cnf(c12,plain,
( in(sK12,sK13)
| subset(singleton(sK12),sK13) ),
inference(clausification,[status(esa)],[negated_conjecture]) ).
cnf(c13,plain,
( ~ subset(singleton(sK12),sK13)
| ~ in(sK12,sK13) ),
inference(clausification,[status(esa)],[negated_conjecture]) ).
cnf(d0,plain,
( in(X0,singleton(X1))
| X0 != X1 ),
inference(equality_resolution,[status(thm)],[c2]) ).
cnf(d1,plain,
in(X0,singleton(X0)),
inference(equality_resolution,[status(thm)],[d0]) ).
cnf(d2,plain,
( in(sK12,sK13)
| ~ in(X0,singleton(sK12))
| in(X0,sK13) ),
inference(resolution,[status(thm)],[c7,c12]) ).
cnf(d3,plain,
( in(sK12,sK13)
| in(sK12,sK13) ),
inference(resolution,[status(thm)],[d2,d1]) ).
cnf(d4,plain,
~ subset(singleton(sK12),sK13),
inference(resolution,[status(thm)],[d3,c13]) ).
cnf(d5,plain,
( ~ in(X0,singleton(X1))
| X0 = X1 ),
inference(equality_resolution,[status(thm)],[c1]) ).
cnf(d6,plain,
( sK9(singleton(X0),X1) = X0
| subset(singleton(X0),X1) ),
inference(resolution,[status(thm)],[c8,d5]) ).
cnf(d7,plain,
sK9(singleton(sK12),sK13) = sK12,
inference(resolution,[status(thm)],[d6,d4]) ).
cnf(d8,plain,
( subset(singleton(sK12),sK13)
| ~ in(sK12,sK13) ),
inference(superposition,[status(thm)],[d7,c9]) ).
cnf(d9,plain,
subset(singleton(sK12),sK13),
inference(resolution,[status(thm)],[d3,d8]) ).
cnf(d10,plain,
$false,
inference(resolution,[status(thm)],[d4,d9]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SEU144+1 : TPTP v9.3.1. Released v3.3.0.
% 0.00/0.04 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.11/0.37 % Computer : n005.cluster.edu
% 0.11/0.37 % Model : x86_64 x86_64
% 0.11/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.37 % Memory : 8046.5625MB
% 0.11/0.37 % OS : Linux 6.8.0-71-generic
% 0.11/0.37 % CPULimit : 300
% 0.11/0.37 % WCLimit : 300
% 0.11/0.37 % DateTime : Sat Sep 26 08:39:32 UTC 2026
% 0.11/0.37 % CPUTime :
% 0.11/0.37 Running casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 9.54/1.66 % SZS status Theorem for theBenchmark.p
% 9.54/1.66 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------