%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : FLD025-5 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n003.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 07:10:48 AM UTC 2026
% Result : Unsatisfiable 13.36s 7.27s
% Output : CNFRefutation 13.36s
% Verified :
% SZS Type : Refutation
% Derivation depth : 11
% Number of leaves : 10
% Syntax : Number of clauses : 37 ( 21 unt; 0 nHn; 37 RR)
% Number of literals : 64 ( 0 equ; 29 neg)
% Maximal clause size : 4 ( 1 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 3 ( 2 usr; 1 prp; 0-3 aty)
% Number of functors : 7 ( 7 usr; 7 con; 0-0 aty)
% Number of variables : 45 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(c_is_defined,hypothesis,
defined(c) ).
cnf(product_7,negated_conjecture,
product('multiplicative$uidentity',a,b) ).
cnf(product_8,negated_conjecture,
product('multiplicative$uidentity',c,d) ).
cnf(product_9,negated_conjecture,
product(a,c,u) ).
cnf(product_10,negated_conjecture,
product(d,b,v) ).
cnf(not_product_11,negated_conjecture,
~ product('multiplicative$uidentity',u,v) ).
cnf(associativity_multiplication_1,axiom,
( ~ product(X4,X5,X2)
| ~ product(X3,X5,X1)
| ~ product(X0,X3,X4)
| product(X0,X1,X2) ) ).
cnf(associativity_multiplication_2,axiom,
( ~ product(X3,X5,X2)
| ~ product(X4,X1,X5)
| ~ product(X3,X4,X0)
| product(X0,X1,X2) ) ).
cnf(existence_of_identity_multiplication,axiom,
( ~ defined(X0)
| product('multiplicative$uidentity',X0,X0) ) ).
cnf(commutativity_multiplication,axiom,
( ~ product(X1,X0,X2)
| product(X0,X1,X2) ) ).
cnf(c2,plain,
defined(c),
inference(clausification,[status(esa)],[c_is_defined]) ).
cnf(c6,plain,
product('multiplicative$uidentity',a,b),
inference(clausification,[status(esa)],[product_7]) ).
cnf(c7,plain,
product('multiplicative$uidentity',c,d),
inference(clausification,[status(esa)],[product_8]) ).
cnf(c8,plain,
product(a,c,u),
inference(clausification,[status(esa)],[product_9]) ).
cnf(c9,plain,
product(d,b,v),
inference(clausification,[status(esa)],[product_10]) ).
cnf(c10,plain,
~ product('multiplicative$uidentity',u,v),
inference(clausification,[status(esa)],[not_product_11]) ).
cnf(c16,plain,
( ~ product(X4,X5,X2)
| ~ product(X3,X5,X1)
| ~ product(X0,X3,X4)
| product(X0,X1,X2) ),
inference(clausification,[status(esa)],[associativity_multiplication_1]) ).
cnf(c17,plain,
( ~ product(X3,X5,X2)
| ~ product(X4,X1,X5)
| ~ product(X3,X4,X0)
| product(X0,X1,X2) ),
inference(clausification,[status(esa)],[associativity_multiplication_2]) ).
cnf(c18,plain,
( ~ defined(X0)
| product('multiplicative$uidentity',X0,X0) ),
inference(clausification,[status(esa)],[existence_of_identity_multiplication]) ).
cnf(c20,plain,
( ~ product(X1,X0,X2)
| product(X0,X1,X2) ),
inference(clausification,[status(esa)],[commutativity_multiplication]) ).
cnf(d0,plain,
product(c,'multiplicative$uidentity',d),
inference(resolution,[status(thm)],[c20,c7]) ).
cnf(d1,plain,
( ~ product(a,X2,X1)
| ~ product(c,X0,X2)
| product(u,X0,X1) ),
inference(resolution,[status(thm)],[c17,c8]) ).
cnf(d2,plain,
( product(u,'multiplicative$uidentity',X0)
| ~ product(a,d,X0) ),
inference(resolution,[status(thm)],[d1,d0]) ).
cnf(d3,plain,
product(b,d,v),
inference(resolution,[status(thm)],[c20,c9]) ).
cnf(d4,plain,
( ~ defined(X0)
| product(X0,'multiplicative$uidentity',X0) ),
inference(resolution,[status(thm)],[c20,c18]) ).
cnf(d5,plain,
( ~ product('multiplicative$uidentity',X2,X1)
| ~ product(c,X0,X2)
| product(d,X0,X1) ),
inference(resolution,[status(thm)],[c17,c7]) ).
cnf(d6,plain,
( product(d,X0,d)
| ~ product(c,X0,c) ),
inference(resolution,[status(thm)],[d5,c7]) ).
cnf(d7,plain,
( ~ defined(c)
| product(d,'multiplicative$uidentity',d) ),
inference(resolution,[status(thm)],[d6,d4]) ).
cnf(d8,plain,
product(d,'multiplicative$uidentity',d),
inference(resolution,[status(thm)],[c2,d7]) ).
cnf(d9,plain,
product('multiplicative$uidentity',d,d),
inference(resolution,[status(thm)],[d8,c20]) ).
cnf(d10,plain,
product(a,'multiplicative$uidentity',b),
inference(resolution,[status(thm)],[c20,c6]) ).
cnf(d11,plain,
( product(a,X2,X1)
| ~ product('multiplicative$uidentity',X0,X2)
| ~ product(b,X0,X1) ),
inference(resolution,[status(thm)],[d10,c16]) ).
cnf(d12,plain,
( ~ product(b,d,X0)
| product(a,d,X0) ),
inference(resolution,[status(thm)],[d11,d9]) ).
cnf(d13,plain,
product(a,d,v),
inference(resolution,[status(thm)],[d12,d3]) ).
cnf(d14,plain,
product(u,'multiplicative$uidentity',v),
inference(resolution,[status(thm)],[d13,d2]) ).
cnf(d15,plain,
product('multiplicative$uidentity',u,v),
inference(resolution,[status(thm)],[d14,c20]) ).
cnf(d16,plain,
$false,
inference(resolution,[status(thm)],[c10,d15]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : FLD025-5 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.03 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/5.36 % Computer : n003.cluster.edu
% 0.08/5.36 % Model : x86_64 x86_64
% 0.08/5.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/5.36 % Memory : 8046.5625MB
% 0.08/5.36 % OS : Linux 6.8.0-71-generic
% 0.08/5.36 % CPULimit : 300
% 0.08/5.36 % WCLimit : 300
% 0.08/5.36 % DateTime : Sun Sep 27 02:26:16 UTC 2026
% 0.08/5.36 % CPUTime :
% 0.08/5.36 Running casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 13.36/7.27 % SZS status Unsatisfiable for theBenchmark.p
% 13.36/7.27 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------