%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : SWC019+1 : TPTP v9.3.1. Released v2.4.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n019.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 08:53:57 AM UTC 2026
% Result : Theorem 25.06s 3.81s
% Output : CNFRefutation 25.06s
% Verified :
% SZS Type : Refutation
% Derivation depth : 15
% Number of leaves : 4
% Syntax : Number of formulae : 28 ( 11 unt; 0 def)
% Number of atoms : 78 ( 28 equ)
% Maximal formula atoms : 13 ( 2 avg)
% Number of connectives : 89 ( 39 ~; 30 |; 8 &)
% ( 1 <=>; 11 =>; 0 <=; 0 <~>)
% Maximal formula depth : 18 ( 4 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 5 ( 3 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 5 con; 0-0 aty)
% Number of variables : 18 ( 0 sgn 11 !; 2 ?)
% Comments :
%------------------------------------------------------------------------------
fof(ax15,axiom,
! [X0] :
( ssList(X0)
=> ! [X1] :
( ssList(X1)
=> ( neq(X0,X1)
<=> X0 != X1 ) ) ) ).
fof(ax17,axiom,
ssList(nil) ).
fof(ax42,axiom,
! [X0] :
( ssList(X0)
=> frontsegP(X0,X0) ) ).
fof(co1,conjecture,
! [X0] :
( ssList(X0)
=> ! [X1] :
( ssList(X1)
=> ! [X2] :
( ssList(X2)
=> ! [X3] :
( ssList(X3)
=> ( ( nil = X0
& nil = X1 )
| ? [X4] :
( frontsegP(X0,X4)
& frontsegP(X1,X4)
& neq(X4,nil)
& ssList(X4) )
| X3 != X2
| X0 != X2
| X1 != X3 ) ) ) ) ) ).
fof(negated_conjecture,negated_conjecture,
~ ! [X0] :
( ssList(X0)
=> ! [X1] :
( ssList(X1)
=> ! [X2] :
( ssList(X2)
=> ! [X3] :
( ssList(X3)
=> ( ( nil = X0
& nil = X1 )
| ? [X4] :
( frontsegP(X0,X4)
& frontsegP(X1,X4)
& neq(X4,nil)
& ssList(X4) )
| X3 != X2
| X0 != X2
| X1 != X3 ) ) ) ) ),
inference(negate_conjecture,[status(cth)],[co1]) ).
cnf(c95,plain,
( X0 = X1
| neq(X0,X1)
| ~ ssList(X1)
| ~ ssList(X0) ),
inference(clausification,[status(esa)],[ax15]) ).
cnf(c97,plain,
ssList(nil),
inference(clausification,[status(esa)],[ax17]) ).
cnf(c131,plain,
( frontsegP(X0,X0)
| ~ ssList(X0) ),
inference(clausification,[status(esa)],[ax42]) ).
cnf(c208,plain,
ssList(sK253),
inference(clausification,[status(esa)],[negated_conjecture]) ).
cnf(c212,plain,
sK254 = sK256,
inference(clausification,[status(esa)],[negated_conjecture]) ).
cnf(c213,plain,
sK253 = sK255,
inference(clausification,[status(esa)],[negated_conjecture]) ).
cnf(c214,plain,
sK256 = sK255,
inference(clausification,[status(esa)],[negated_conjecture]) ).
cnf(c215,plain,
( ~ frontsegP(sK253,X0)
| ~ frontsegP(sK254,X0)
| ~ neq(X0,nil)
| ~ ssList(X0) ),
inference(clausification,[status(esa)],[negated_conjecture]) ).
cnf(c216,plain,
( nil != sK253
| nil != sK254 ),
inference(clausification,[status(esa)],[negated_conjecture]) ).
cnf(d0,plain,
sK254 = sK255,
inference(demodulation,[status(thm)],[c214,c212]) ).
cnf(d1,plain,
sK254 = sK253,
inference(demodulation,[status(thm)],[d0,c213]) ).
cnf(d2,plain,
( ~ frontsegP(sK253,X0)
| ~ frontsegP(sK253,X0)
| ~ ssList(X0)
| ~ neq(X0,nil) ),
inference(demodulation,[status(thm)],[c215,d1]) ).
cnf(d3,plain,
( ~ frontsegP(sK253,sK253)
| ~ ssList(sK253)
| ~ neq(sK253,nil)
| ~ ssList(sK253) ),
inference(resolution,[status(thm)],[c131,d2]) ).
cnf(d4,plain,
( ~ frontsegP(sK253,sK253)
| ~ neq(sK253,nil) ),
inference(resolution,[status(thm)],[c208,d3]) ).
cnf(d5,plain,
( ~ ssList(sK253)
| ~ neq(sK253,nil) ),
inference(resolution,[status(thm)],[d4,c131]) ).
cnf(d6,plain,
~ neq(sK253,nil),
inference(resolution,[status(thm)],[c208,d5]) ).
cnf(d7,plain,
( ~ ssList(sK253)
| ~ ssList(nil)
| sK253 = nil ),
inference(resolution,[status(thm)],[c95,d6]) ).
cnf(d8,plain,
( ~ ssList(nil)
| sK253 = nil ),
inference(resolution,[status(thm)],[c208,d7]) ).
cnf(d9,plain,
sK253 = nil,
inference(resolution,[status(thm)],[c97,d8]) ).
cnf(d10,plain,
( nil != sK253
| nil != sK253 ),
inference(demodulation,[status(thm)],[c216,d1]) ).
cnf(d11,plain,
( nil != sK253
| nil != nil ),
inference(demodulation,[status(thm)],[d10,d9]) ).
cnf(d12,plain,
( nil != nil
| nil != nil ),
inference(demodulation,[status(thm)],[d11,d9]) ).
cnf(d13,plain,
$false,
inference(equality_resolution,[status(thm)],[d12]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SWC019+1 : TPTP v9.3.1. Released v2.4.0.
% 0.00/0.04 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.08/0.51 % Computer : n019.cluster.edu
% 0.08/0.51 % Model : x86_64 x86_64
% 0.08/0.51 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.51 % Memory : 8046.5625MB
% 0.08/0.51 % OS : Linux 6.8.0-71-generic
% 0.08/0.51 % CPULimit : 300
% 0.08/0.51 % WCLimit : 300
% 0.08/0.51 % DateTime : Sat Sep 26 12:04:50 UTC 2026
% 0.08/0.51 % CPUTime :
% 0.08/0.51 Running casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 25.06/3.81 % SZS status Theorem for theBenchmark.p
% 25.06/3.81 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------