%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : FLD023-3 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n012.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 07:10:47 AM UTC 2026
% Result : Unsatisfiable 10.95s 1.76s
% Output : CNFRefutation 10.95s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 8
% Syntax : Number of clauses : 25 ( 12 unt; 0 nHn; 25 RR)
% Number of literals : 45 ( 0 equ; 22 neg)
% Maximal clause size : 4 ( 1 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 3 ( 2 usr; 1 prp; 0-3 aty)
% Number of functors : 4 ( 4 usr; 3 con; 0-1 aty)
% Number of variables : 28 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(a_is_defined,hypothesis,
defined(a) ).
cnf(sum_3,negated_conjecture,
sum('additive$uidentity',a,b) ).
cnf(not_sum_4,negated_conjecture,
~ sum(b,'additive$uinverse'(a),'additive$uidentity') ).
cnf(associativity_addition_1,axiom,
( ~ sum(X4,X5,X2)
| ~ sum(X3,X5,X1)
| ~ sum(X0,X3,X4)
| sum(X0,X1,X2) ) ).
cnf(existence_of_identity_addition,axiom,
( ~ defined(X0)
| sum('additive$uidentity',X0,X0) ) ).
cnf(existence_of_inverse_addition,axiom,
( ~ defined(X0)
| sum('additive$uinverse'(X0),X0,'additive$uidentity') ) ).
cnf(commutativity_addition,axiom,
( ~ sum(X1,X0,X2)
| sum(X0,X1,X2) ) ).
cnf(well_definedness_of_additive_identity,axiom,
defined('additive$uidentity') ).
cnf(c0,plain,
defined(a),
inference(clausification,[status(esa)],[a_is_defined]) ).
cnf(c2,plain,
sum('additive$uidentity',a,b),
inference(clausification,[status(esa)],[sum_3]) ).
cnf(c3,plain,
~ sum(b,'additive$uinverse'(a),'additive$uidentity'),
inference(clausification,[status(esa)],[not_sum_4]) ).
cnf(c4,plain,
( ~ sum(X4,X5,X2)
| ~ sum(X3,X5,X1)
| ~ sum(X0,X3,X4)
| sum(X0,X1,X2) ),
inference(clausification,[status(esa)],[associativity_addition_1]) ).
cnf(c6,plain,
( ~ defined(X0)
| sum('additive$uidentity',X0,X0) ),
inference(clausification,[status(esa)],[existence_of_identity_addition]) ).
cnf(c7,plain,
( ~ defined(X0)
| sum('additive$uinverse'(X0),X0,'additive$uidentity') ),
inference(clausification,[status(esa)],[existence_of_inverse_addition]) ).
cnf(c8,plain,
( ~ sum(X1,X0,X2)
| sum(X0,X1,X2) ),
inference(clausification,[status(esa)],[commutativity_addition]) ).
cnf(c17,plain,
defined('additive$uidentity'),
inference(clausification,[status(esa)],[well_definedness_of_additive_identity]) ).
cnf(d0,plain,
( ~ defined(X0)
| sum(X0,'additive$uidentity',X0) ),
inference(resolution,[status(thm)],[c8,c6]) ).
cnf(d1,plain,
sum(a,'additive$uidentity',b),
inference(resolution,[status(thm)],[c8,c2]) ).
cnf(d2,plain,
( ~ sum(X2,a,X0)
| sum(X2,b,X1)
| ~ sum(X0,'additive$uidentity',X1) ),
inference(resolution,[status(thm)],[c4,d1]) ).
cnf(d3,plain,
( ~ defined(X1)
| sum(X0,b,X1)
| ~ sum(X0,a,X1) ),
inference(resolution,[status(thm)],[d2,d0]) ).
cnf(d4,plain,
( ~ defined(a)
| sum('additive$uinverse'(a),b,'additive$uidentity')
| ~ defined('additive$uidentity') ),
inference(resolution,[status(thm)],[d3,c7]) ).
cnf(d5,plain,
( sum('additive$uinverse'(a),b,'additive$uidentity')
| ~ defined('additive$uidentity') ),
inference(resolution,[status(thm)],[c0,d4]) ).
cnf(d6,plain,
sum('additive$uinverse'(a),b,'additive$uidentity'),
inference(resolution,[status(thm)],[c17,d5]) ).
cnf(d7,plain,
sum(b,'additive$uinverse'(a),'additive$uidentity'),
inference(resolution,[status(thm)],[d6,c8]) ).
cnf(d8,plain,
$false,
inference(resolution,[status(thm)],[c3,d7]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.01 % Problem : FLD023-3 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.02 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.03/0.30 % Computer : n012.cluster.edu
% 0.03/0.30 % Model : x86_64 x86_64
% 0.03/0.30 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.03/0.30 % Memory : 8046.5625MB
% 0.03/0.30 % OS : Linux 6.8.0-71-generic
% 0.03/0.30 % CPULimit : 300
% 0.03/0.30 % WCLimit : 300
% 0.03/0.30 % DateTime : Sun Sep 27 02:23:35 UTC 2026
% 0.03/0.30 % CPUTime :
% 0.03/0.30 Running casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 10.95/1.76 % SZS status Unsatisfiable for theBenchmark.p
% 10.95/1.76 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------