%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : SWC054-1 : 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 : n018.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 08:54:06 AM UTC 2026
% Result : Unsatisfiable 23.01s 6.12s
% Output : CNFRefutation 23.01s
% Verified :
% SZS Type : Refutation
% Derivation depth : 13
% Number of leaves : 14
% Syntax : Number of clauses : 57 ( 12 unt; 10 nHn; 57 RR)
% Number of literals : 128 ( 51 equ; 65 neg)
% Maximal clause size : 5 ( 2 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 5 ( 3 usr; 1 prp; 0-2 aty)
% Number of functors : 7 ( 7 usr; 6 con; 0-2 aty)
% Number of variables : 15 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(co1_5,negated_conjecture,
sk2 = sk4 ).
cnf(co1_6,negated_conjecture,
sk1 = sk3 ).
cnf(co1_7,negated_conjecture,
( nil != sk4
| nil = sk3 ) ).
cnf(co1_8,negated_conjecture,
( ~ neq(sk4,nil)
| ssList(sk5) ) ).
cnf(co1_9,negated_conjecture,
( ~ neq(sk4,nil)
| neq(sk5,nil) ) ).
cnf(co1_10,negated_conjecture,
( ~ neq(sk4,nil)
| segmentP(sk4,sk5) ) ).
cnf(co1_11,negated_conjecture,
( ~ neq(sk4,nil)
| segmentP(sk3,sk5) ) ).
cnf(co1_12,negated_conjecture,
( neq(sk2,nil)
| nil = sk2 ) ).
cnf(co1_13,negated_conjecture,
( ~ segmentP(sk1,X0)
| ~ segmentP(sk2,X0)
| ~ neq(X0,nil)
| ~ ssList(X0)
| nil = sk2 ) ).
cnf(co1_14,negated_conjecture,
( neq(sk2,nil)
| nil != sk1 ) ).
cnf(clause8,axiom,
ssList(nil) ).
cnf(clause73,axiom,
( app(X0,nil) = X0
| ~ ssList(X0) ) ).
cnf(clause115,axiom,
( ~ ssList(X0)
| ~ ssList(X1)
| ~ neq(X0,X1)
| X0 != X1 ) ).
cnf(clause145,axiom,
( app(X0,X1) = nil
| ~ ssList(X0)
| ~ ssList(X1)
| nil != X1
| nil != X0 ) ).
cnf(c4,plain,
sk2 = sk4,
inference(clausification,[status(esa)],[co1_5]) ).
cnf(c5,plain,
sk1 = sk3,
inference(clausification,[status(esa)],[co1_6]) ).
cnf(c6,plain,
( nil != sk4
| nil = sk3 ),
inference(clausification,[status(esa)],[co1_7]) ).
cnf(c7,plain,
( ~ neq(sk4,nil)
| ssList(sk5) ),
inference(clausification,[status(esa)],[co1_8]) ).
cnf(c8,plain,
( ~ neq(sk4,nil)
| neq(sk5,nil) ),
inference(clausification,[status(esa)],[co1_9]) ).
cnf(c9,plain,
( ~ neq(sk4,nil)
| segmentP(sk4,sk5) ),
inference(clausification,[status(esa)],[co1_10]) ).
cnf(c10,plain,
( ~ neq(sk4,nil)
| segmentP(sk3,sk5) ),
inference(clausification,[status(esa)],[co1_11]) ).
cnf(c11,plain,
( neq(sk2,nil)
| nil = sk2 ),
inference(clausification,[status(esa)],[co1_12]) ).
cnf(c12,plain,
( nil = sk2
| ~ neq(X0,nil)
| ~ segmentP(sk2,X0)
| ~ segmentP(sk1,X0)
| ~ ssList(X0) ),
inference(clausification,[status(esa)],[co1_13]) ).
cnf(c13,plain,
( neq(sk2,nil)
| nil != sk1 ),
inference(clausification,[status(esa)],[co1_14]) ).
cnf(c22,plain,
ssList(nil),
inference(clausification,[status(esa)],[clause8]) ).
cnf(c87,plain,
( app(X0,nil) = X0
| ~ ssList(X0) ),
inference(clausification,[status(esa)],[clause73]) ).
cnf(c129,plain,
( ~ ssList(X0)
| ~ ssList(X1)
| ~ neq(X0,X1)
| X0 != X1 ),
inference(clausification,[status(esa)],[clause115]) ).
cnf(c159,plain,
( ~ ssList(X1)
| nil != X1
| ~ ssList(X0)
| nil != X0
| app(X0,X1) = nil ),
inference(clausification,[status(esa)],[clause145]) ).
cnf(d0,plain,
( ~ neq(X0,X0)
| ~ ssList(X0)
| ~ ssList(X0) ),
inference(equality_resolution,[status(thm)],[c129]) ).
cnf(d1,plain,
( nil != sk4
| nil = sk1 ),
inference(demodulation,[status(thm)],[c6,c5]) ).
cnf(d2,plain,
( nil != sk2
| nil = sk1 ),
inference(demodulation,[status(thm)],[d1,c4]) ).
cnf(d3,plain,
( ~ neq(sk2,nil)
| ssList(sk5) ),
inference(demodulation,[status(thm)],[c7,c4]) ).
cnf(d4,plain,
( ssList(sk5)
| nil = sk2 ),
inference(resolution,[status(thm)],[c11,d3]) ).
cnf(d5,plain,
( neq(sk5,nil)
| ~ neq(sk2,nil) ),
inference(demodulation,[status(thm)],[c8,c4]) ).
cnf(d6,plain,
( neq(sk5,nil)
| nil = sk2 ),
inference(resolution,[status(thm)],[c11,d5]) ).
cnf(d7,plain,
( segmentP(sk3,sk5)
| ~ neq(sk2,nil) ),
inference(demodulation,[status(thm)],[c10,c4]) ).
cnf(d8,plain,
( segmentP(sk1,sk5)
| ~ neq(sk2,nil) ),
inference(demodulation,[status(thm)],[d7,c5]) ).
cnf(d9,plain,
( segmentP(sk1,sk5)
| nil = sk2 ),
inference(resolution,[status(thm)],[c11,d8]) ).
cnf(d10,plain,
( segmentP(sk4,sk5)
| ~ neq(sk2,nil) ),
inference(demodulation,[status(thm)],[c9,c4]) ).
cnf(d11,plain,
( segmentP(sk2,sk5)
| ~ neq(sk2,nil) ),
inference(demodulation,[status(thm)],[d10,c4]) ).
cnf(d12,plain,
( segmentP(sk2,sk5)
| nil = sk2 ),
inference(resolution,[status(thm)],[c11,d11]) ).
cnf(d13,plain,
( ~ segmentP(sk1,sk5)
| ~ neq(sk5,nil)
| ~ ssList(sk5)
| nil = sk2
| nil = sk2 ),
inference(resolution,[status(thm)],[d12,c12]) ).
cnf(d14,plain,
( nil = sk2
| ~ neq(sk5,nil)
| ~ ssList(sk5)
| nil = sk2 ),
inference(resolution,[status(thm)],[d13,d9]) ).
cnf(d15,plain,
( nil = sk2
| ~ ssList(sk5)
| nil = sk2 ),
inference(resolution,[status(thm)],[d14,d6]) ).
cnf(d16,plain,
( nil = sk2
| nil = sk2 ),
inference(resolution,[status(thm)],[d15,d4]) ).
cnf(d17,plain,
nil = sk1,
inference(resolution,[status(thm)],[d16,d2]) ).
cnf(d18,plain,
( neq(nil,nil)
| nil != sk1 ),
inference(demodulation,[status(thm)],[c13,d16]) ).
cnf(d19,plain,
( neq(nil,nil)
| nil != nil ),
inference(demodulation,[status(thm)],[d18,d17]) ).
cnf(d20,plain,
app(nil,nil) = nil,
inference(resolution,[status(thm)],[c87,c22]) ).
cnf(d21,plain,
( ~ ssList(nil)
| ~ ssList(X0)
| app(nil,X0) = nil
| nil != X0 ),
inference(equality_resolution,[status(thm)],[c159]) ).
cnf(d22,plain,
( ~ ssList(X0)
| app(nil,X0) = nil
| nil != X0 ),
inference(resolution,[status(thm)],[c22,d21]) ).
cnf(d23,plain,
( ~ ssList(nil)
| app(nil,nil) = nil ),
inference(equality_resolution,[status(thm)],[d22]) ).
cnf(d24,plain,
( ~ ssList(nil)
| nil = nil ),
inference(demodulation,[status(thm)],[d23,d20]) ).
cnf(d25,plain,
nil = nil,
inference(resolution,[status(thm)],[c22,d24]) ).
cnf(d26,plain,
neq(nil,nil),
inference(resolution,[status(thm)],[d25,d19]) ).
cnf(d27,plain,
~ ssList(nil),
inference(resolution,[status(thm)],[d26,d0]) ).
cnf(d28,plain,
$false,
inference(resolution,[status(thm)],[c22,d27]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : SWC054-1 : TPTP v9.3.1. Released v2.4.0.
% 0.00/0.06 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.15/0.42 % Computer : n018.cluster.edu
% 0.15/0.42 % Model : x86_64 x86_64
% 0.15/0.42 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.42 % Memory : 8046.5625MB
% 0.15/0.42 % OS : Linux 6.8.0-71-generic
% 0.15/0.42 % CPULimit : 300
% 0.15/0.42 % WCLimit : 300
% 0.15/0.42 % DateTime : Sat Sep 26 12:10:51 UTC 2026
% 0.15/0.43 % CPUTime :
% 0.15/0.43 Running casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 23.01/6.12 % SZS status Unsatisfiable for theBenchmark.p
% 23.01/6.12 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------