%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : SWC004-1 : TPTP v9.3.1. Released v2.4.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n015.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 08:53:54 AM UTC 2026
% Result : Unsatisfiable 41.39s 10.23s
% Output : CNFRefutation 41.39s
% Verified :
% SZS Type : Refutation
% Derivation depth : 18
% Number of leaves : 14
% Syntax : Number of clauses : 59 ( 17 unt; 3 nHn; 59 RR)
% Number of literals : 150 ( 37 equ; 104 neg)
% Maximal clause size : 7 ( 2 avg)
% Maximal term depth : 4 ( 1 avg)
% Number of predicates : 6 ( 4 usr; 1 prp; 0-2 aty)
% Number of functors : 10 ( 10 usr; 8 con; 0-2 aty)
% Number of variables : 27 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(co1_5,negated_conjecture,
sk2 = sk4 ).
cnf(co1_6,negated_conjecture,
sk1 = sk3 ).
cnf(co1_7,negated_conjecture,
( neq(sk2,nil)
| neq(sk2,nil) ) ).
cnf(co1_15,negated_conjecture,
( ~ neq(sk4,nil)
| ~ neq(X1,nil)
| app(X0,X2) != sk1
| app(app(X0,X1),X2) != sk2
| ~ ssList(X2)
| ~ ssList(X1)
| ~ ssList(X0) ) ).
cnf(co1_16,negated_conjecture,
( ~ neq(sk4,nil)
| ssItem(sk5) ) ).
cnf(co1_17,negated_conjecture,
( ~ neq(sk4,nil)
| ssList(sk6) ) ).
cnf(co1_18,negated_conjecture,
( ~ neq(sk4,nil)
| ssList(sk7) ) ).
cnf(co1_19,negated_conjecture,
( ~ neq(sk4,nil)
| app(app(sk6,cons(sk5,nil)),sk7) = sk4 ) ).
cnf(co1_20,negated_conjecture,
( ~ neq(sk4,nil)
| app(sk6,sk7) = sk3 ) ).
cnf(clause8,axiom,
ssList(nil) ).
cnf(clause11,axiom,
~ singletonP(nil) ).
cnf(clause86,axiom,
( ssList(cons(X0,X1))
| ~ ssList(X1)
| ~ ssItem(X0) ) ).
cnf(clause100,axiom,
( X1 = X0
| neq(X1,X0)
| ~ ssList(X1)
| ~ ssList(X0) ) ).
cnf(clause116,axiom,
( singletonP(X1)
| ~ ssList(X1)
| ~ ssItem(X0)
| cons(X0,nil) != X1 ) ).
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,
neq(sk2,nil),
inference(clausification,[status(esa)],[co1_7]) ).
cnf(c14,plain,
( ~ ssList(X1)
| ~ ssList(X2)
| ~ neq(X2,nil)
| ~ neq(sk4,nil)
| app(app(X1,X2),X0) != sk2
| app(X1,X0) != sk1
| ~ ssList(X0) ),
inference(clausification,[status(esa)],[co1_15]) ).
cnf(c15,plain,
( ~ neq(sk4,nil)
| ssItem(sk5) ),
inference(clausification,[status(esa)],[co1_16]) ).
cnf(c16,plain,
( ~ neq(sk4,nil)
| ssList(sk6) ),
inference(clausification,[status(esa)],[co1_17]) ).
cnf(c17,plain,
( ~ neq(sk4,nil)
| ssList(sk7) ),
inference(clausification,[status(esa)],[co1_18]) ).
cnf(c18,plain,
( ~ neq(sk4,nil)
| app(app(sk6,cons(sk5,nil)),sk7) = sk4 ),
inference(clausification,[status(esa)],[co1_19]) ).
cnf(c19,plain,
( ~ neq(sk4,nil)
| app(sk6,sk7) = sk3 ),
inference(clausification,[status(esa)],[co1_20]) ).
cnf(c27,plain,
ssList(nil),
inference(clausification,[status(esa)],[clause8]) ).
cnf(c30,plain,
~ singletonP(nil),
inference(clausification,[status(esa)],[clause11]) ).
cnf(c105,plain,
( ssList(cons(X0,X1))
| ~ ssList(X1)
| ~ ssItem(X0) ),
inference(clausification,[status(esa)],[clause86]) ).
cnf(c119,plain,
( X1 = X0
| neq(X1,X0)
| ~ ssList(X1)
| ~ ssList(X0) ),
inference(clausification,[status(esa)],[clause100]) ).
cnf(c135,plain,
( singletonP(X1)
| ~ ssList(X1)
| ~ ssItem(X0)
| cons(X0,nil) != X1 ),
inference(clausification,[status(esa)],[clause116]) ).
cnf(d0,plain,
( singletonP(cons(X0,nil))
| ~ ssItem(X0)
| ~ ssList(cons(X0,nil)) ),
inference(equality_resolution,[status(thm)],[c135]) ).
cnf(d1,plain,
( ~ ssItem(X0)
| ~ ssList(nil)
| singletonP(cons(X0,nil))
| ~ ssItem(X0) ),
inference(resolution,[status(thm)],[d0,c105]) ).
cnf(d2,plain,
( singletonP(cons(X0,nil))
| ~ ssItem(X0) ),
inference(resolution,[status(thm)],[c27,d1]) ).
cnf(d3,plain,
( ~ neq(sk4,nil)
| app(sk6,sk7) = sk1 ),
inference(demodulation,[status(thm)],[c19,c5]) ).
cnf(d4,plain,
( ~ neq(sk2,nil)
| app(sk6,sk7) = sk1 ),
inference(demodulation,[status(thm)],[d3,c4]) ).
cnf(d5,plain,
app(sk6,sk7) = sk1,
inference(resolution,[status(thm)],[c6,d4]) ).
cnf(d6,plain,
( ~ neq(sk2,nil)
| ~ neq(X2,nil)
| ~ ssList(X0)
| ~ ssList(X2)
| ~ ssList(X1)
| app(app(X0,X2),X1) != sk2
| app(X0,X1) != sk1 ),
inference(demodulation,[status(thm)],[c14,c4]) ).
cnf(d7,plain,
( ~ neq(X2,nil)
| ~ ssList(X0)
| ~ ssList(X2)
| ~ ssList(X1)
| app(app(X0,X2),X1) != sk2
| app(X0,X1) != sk1 ),
inference(resolution,[status(thm)],[c6,d6]) ).
cnf(d8,plain,
( ~ neq(sk4,nil)
| app(app(sk6,cons(sk5,nil)),sk7) = sk2 ),
inference(demodulation,[status(thm)],[c18,c4]) ).
cnf(d9,plain,
( ~ neq(sk2,nil)
| app(app(sk6,cons(sk5,nil)),sk7) = sk2 ),
inference(demodulation,[status(thm)],[d8,c4]) ).
cnf(d10,plain,
app(app(sk6,cons(sk5,nil)),sk7) = sk2,
inference(resolution,[status(thm)],[c6,d9]) ).
cnf(d11,plain,
( ~ neq(cons(sk5,nil),nil)
| ~ ssList(sk6)
| ~ ssList(sk7)
| ~ ssList(cons(sk5,nil))
| app(sk6,sk7) != sk1
| sk2 != sk2 ),
inference(superposition,[status(thm)],[d10,d7]) ).
cnf(d12,plain,
( ~ neq(cons(sk5,nil),nil)
| ~ ssList(cons(sk5,nil))
| ~ ssList(sk7)
| ~ ssList(sk6)
| sk1 != sk1
| sk2 != sk2 ),
inference(demodulation,[status(thm)],[d11,d5]) ).
cnf(d13,plain,
( ~ neq(sk2,nil)
| ssList(sk6) ),
inference(demodulation,[status(thm)],[c16,c4]) ).
cnf(d14,plain,
ssList(sk6),
inference(resolution,[status(thm)],[c6,d13]) ).
cnf(d15,plain,
( ~ neq(cons(sk5,nil),nil)
| ~ ssList(cons(sk5,nil))
| ~ ssList(sk7)
| sk1 != sk1
| sk2 != sk2 ),
inference(resolution,[status(thm)],[d14,d12]) ).
cnf(d16,plain,
( ~ neq(sk2,nil)
| ssList(sk7) ),
inference(demodulation,[status(thm)],[c17,c4]) ).
cnf(d17,plain,
ssList(sk7),
inference(resolution,[status(thm)],[c6,d16]) ).
cnf(d18,plain,
( ~ neq(cons(sk5,nil),nil)
| ~ ssList(cons(sk5,nil))
| sk2 != sk2
| sk1 != sk1 ),
inference(resolution,[status(thm)],[d17,d15]) ).
cnf(d19,plain,
( ~ neq(cons(sk5,nil),nil)
| ~ ssList(cons(sk5,nil))
| sk1 != sk1 ),
inference(equality_resolution,[status(thm)],[d18]) ).
cnf(d20,plain,
( ~ neq(cons(sk5,nil),nil)
| ~ ssList(cons(sk5,nil)) ),
inference(equality_resolution,[status(thm)],[d19]) ).
cnf(d21,plain,
( ~ ssList(nil)
| ~ ssList(cons(sk5,nil))
| cons(sk5,nil) = nil
| ~ ssList(cons(sk5,nil)) ),
inference(resolution,[status(thm)],[d20,c119]) ).
cnf(d22,plain,
( ~ ssList(cons(sk5,nil))
| cons(sk5,nil) = nil ),
inference(resolution,[status(thm)],[c27,d21]) ).
cnf(d23,plain,
( ~ ssList(cons(sk5,nil))
| ~ ssItem(sk5)
| singletonP(nil) ),
inference(superposition,[status(thm)],[d22,d2]) ).
cnf(d24,plain,
( ~ ssItem(sk5)
| ~ ssList(cons(sk5,nil)) ),
inference(resolution,[status(thm)],[c30,d23]) ).
cnf(d25,plain,
( ssItem(sk5)
| ~ neq(sk2,nil) ),
inference(demodulation,[status(thm)],[c15,c4]) ).
cnf(d26,plain,
ssItem(sk5),
inference(resolution,[status(thm)],[c6,d25]) ).
cnf(d27,plain,
~ ssList(cons(sk5,nil)),
inference(resolution,[status(thm)],[d26,d24]) ).
cnf(d28,plain,
( ~ ssItem(sk5)
| ~ ssList(nil) ),
inference(resolution,[status(thm)],[d27,c105]) ).
cnf(d29,plain,
~ ssItem(sk5),
inference(resolution,[status(thm)],[c27,d28]) ).
cnf(d30,plain,
$false,
inference(resolution,[status(thm)],[d26,d29]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.04 % Problem : SWC004-1 : TPTP v9.3.1. Released v2.4.0.
% 0.00/0.06 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.15/1.05 % Computer : n015.cluster.edu
% 0.15/1.05 % Model : x86_64 x86_64
% 0.15/1.05 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/1.05 % Memory : 8046.5625MB
% 0.15/1.05 % OS : Linux 6.8.0-71-generic
% 0.15/1.06 % CPULimit : 300
% 0.15/1.06 % WCLimit : 300
% 0.15/1.06 % DateTime : Sat Sep 26 12:06:02 UTC 2026
% 0.15/1.06 % CPUTime :
% 0.15/1.06 Running casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 41.39/10.23 % SZS status Unsatisfiable for theBenchmark.p
% 41.39/10.23 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------