%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : GRP520-1 : TPTP v9.3.1. Bugfixed v2.7.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n017.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 07:23:56 AM UTC 2026
% Result : Unsatisfiable 13.97s 3.59s
% Output : CNFRefutation 13.97s
% Verified :
% SZS Type : Refutation
% Derivation depth : 10
% Number of leaves : 2
% Syntax : Number of clauses : 17 ( 17 unt; 0 nHn; 3 RR)
% Number of literals : 17 ( 16 equ; 2 neg)
% Maximal clause size : 1 ( 1 avg)
% Maximal term depth : 7 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 4 ( 4 usr; 2 con; 0-2 aty)
% Number of variables : 44 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(single_axiom,axiom,
multiply(X0,multiply(multiply(inverse(multiply(X0,X1)),X2),X1)) = X2 ).
cnf(prove_these_axioms_4,negated_conjecture,
multiply(a,b) != multiply(b,a) ).
cnf(c0,plain,
multiply(X0,multiply(multiply(inverse(multiply(X0,X1)),X2),X1)) = X2,
inference(clausification,[status(esa)],[single_axiom]) ).
cnf(c1,plain,
multiply(a,b) != multiply(b,a),
inference(clausification,[status(esa)],[prove_these_axioms_4]) ).
cnf(d0,plain,
multiply(X0,multiply(multiply(inverse(X2),X3),multiply(multiply(inverse(multiply(X0,X1)),X2),X1))) = X3,
inference(superposition,[status(thm)],[c0,c0]) ).
cnf(d1,plain,
multiply(multiply(inverse(X0),X1),X0) = X1,
inference(superposition,[status(thm)],[c0,d0]) ).
cnf(d2,plain,
multiply(X0,multiply(X3,X1)) = multiply(multiply(inverse(multiply(inverse(multiply(X0,X1)),X2)),X3),X2),
inference(superposition,[status(thm)],[c0,c0]) ).
cnf(d3,plain,
multiply(inverse(multiply(X0,X1)),multiply(X0,multiply(X3,X1))) = X3,
inference(superposition,[status(thm)],[d2,c0]) ).
cnf(d4,plain,
multiply(X2,multiply(X0,X1)) = multiply(X0,multiply(X2,X1)),
inference(superposition,[status(thm)],[d3,d1]) ).
cnf(d5,plain,
multiply(X2,X1) = multiply(multiply(inverse(X0),X1),multiply(X2,X0)),
inference(superposition,[status(thm)],[d1,d4]) ).
cnf(d6,plain,
multiply(multiply(inverse(X0),X1),multiply(X2,X0)) = multiply(multiply(inverse(multiply(inverse(X1),X3)),X2),X3),
inference(superposition,[status(thm)],[d1,d2]) ).
cnf(d7,plain,
multiply(X2,X1) = multiply(multiply(inverse(multiply(inverse(X1),X3)),X2),X3),
inference(demodulation,[status(thm)],[d6,d5]) ).
cnf(d8,plain,
multiply(X2,X0) = multiply(multiply(inverse(X1),X2),multiply(multiply(inverse(multiply(inverse(X0),X3)),X1),X3)),
inference(superposition,[status(thm)],[d0,d1]) ).
cnf(d9,plain,
multiply(X3,X0) = multiply(multiply(inverse(X2),X3),multiply(X2,X0)),
inference(demodulation,[status(thm)],[d8,d7]) ).
cnf(d10,plain,
multiply(X1,X2) = multiply(X0,multiply(multiply(inverse(X0),X1),X2)),
inference(demodulation,[status(thm)],[d9,d4]) ).
cnf(d11,plain,
multiply(X1,X0) = multiply(X0,X1),
inference(superposition,[status(thm)],[d1,d10]) ).
cnf(d12,plain,
$false,
inference(resolution,[status(thm)],[d11,c1]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : GRP520-1 : TPTP v9.3.1. Bugfixed v2.7.0.
% 0.00/0.07 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.19/0.44 % Computer : n017.cluster.edu
% 0.19/0.44 % Model : x86_64 x86_64
% 0.19/0.44 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.19/0.44 % Memory : 8046.5625MB
% 0.19/0.44 % OS : Linux 6.8.0-71-generic
% 0.19/0.44 % CPULimit : 300
% 0.19/0.44 % WCLimit : 300
% 0.19/0.44 % DateTime : Fri Sep 25 14:53:19 UTC 2026
% 0.19/0.44 % CPUTime :
% 0.19/0.44 Running casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 13.97/3.59 % SZS status Unsatisfiable for theBenchmark.p
% 13.97/3.59 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------