%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : GRP086-1 : TPTP v9.3.1. Bugfixed v2.7.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/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 07:22:17 AM UTC 2026
% Result : Unsatisfiable 67.98s 10.39s
% Output : CNFRefutation 67.98s
% Verified :
% SZS Type : Refutation
% Derivation depth : 24
% Number of leaves : 2
% Syntax : Number of clauses : 56 ( 46 unt; 0 nHn; 12 RR)
% Number of literals : 77 ( 76 equ; 32 neg)
% Maximal clause size : 4 ( 1 avg)
% Maximal term depth : 9 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 11 ( 11 usr; 9 con; 0-2 aty)
% Number of variables : 117 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(single_axiom,axiom,
multiply(X0,multiply(multiply(X1,X2),inverse(multiply(X0,X2)))) = X1 ).
cnf(prove_these_axioms,negated_conjecture,
( multiply(a4,b4) != multiply(b4,a4)
| multiply(multiply(a3,b3),c3) != multiply(a3,multiply(b3,c3))
| multiply(multiply(inverse(b2),b2),a2) != a2
| multiply(inverse(a1),a1) != multiply(inverse(b1),b1) ) ).
cnf(c0,plain,
multiply(X0,multiply(multiply(X1,X2),inverse(multiply(X0,X2)))) = X1,
inference(clausification,[status(esa)],[single_axiom]) ).
cnf(c1,plain,
( multiply(a4,b4) != multiply(b4,a4)
| multiply(multiply(a3,b3),c3) != multiply(a3,multiply(b3,c3))
| multiply(multiply(inverse(b2),b2),a2) != a2
| multiply(inverse(a1),a1) != multiply(inverse(b1),b1) ),
inference(clausification,[status(esa)],[prove_these_axioms]) ).
cnf(d0,plain,
multiply(X3,multiply(X1,inverse(multiply(X3,multiply(multiply(X1,X2),inverse(multiply(X0,X2))))))) = X0,
inference(superposition,[status(thm)],[c0,c0]) ).
cnf(d1,plain,
multiply(X0,multiply(X1,inverse(X1))) = X0,
inference(superposition,[status(thm)],[c0,d0]) ).
cnf(d2,plain,
multiply(X0,multiply(X1,inverse(X0))) = X1,
inference(superposition,[status(thm)],[d1,d0]) ).
cnf(d3,plain,
multiply(multiply(X0,X1),multiply(X2,inverse(multiply(X2,X1)))) = X0,
inference(superposition,[status(thm)],[d2,d0]) ).
cnf(d4,plain,
multiply(multiply(X0,X1),multiply(X2,inverse(X0))) = multiply(X2,X1),
inference(superposition,[status(thm)],[d3,d0]) ).
cnf(d5,plain,
multiply(X2,multiply(X1,inverse(multiply(X2,multiply(X1,inverse(X0)))))) = X0,
inference(superposition,[status(thm)],[d2,c0]) ).
cnf(d6,plain,
multiply(X0,multiply(multiply(X1,X2),inverse(X1))) = multiply(X0,X2),
inference(superposition,[status(thm)],[c0,d5]) ).
cnf(d7,plain,
multiply(multiply(X0,X1),X2) = multiply(multiply(X0,X2),X1),
inference(superposition,[status(thm)],[d6,d4]) ).
cnf(d8,plain,
multiply(X0,multiply(multiply(X3,multiply(multiply(X1,X2),inverse(multiply(X0,X2)))),inverse(X1))) = X3,
inference(superposition,[status(thm)],[c0,c0]) ).
cnf(d9,plain,
multiply(X3,multiply(multiply(X0,inverse(X1)),multiply(multiply(X1,X2),inverse(multiply(X3,X2))))) = X0,
inference(demodulation,[status(thm)],[d8,d7]) ).
cnf(d10,plain,
multiply(multiply(X0,inverse(X1)),X1) = X0,
inference(superposition,[status(thm)],[c0,d9]) ).
cnf(d11,plain,
multiply(multiply(X0,X1),inverse(X1)) = X0,
inference(demodulation,[status(thm)],[d10,d7]) ).
cnf(d12,plain,
multiply(X1,X0) = multiply(X0,X1),
inference(superposition,[status(thm)],[d11,d2]) ).
cnf(d13,plain,
multiply(multiply(X1,inverse(X1)),X0) = X0,
inference(superposition,[status(thm)],[d3,d9]) ).
cnf(d14,plain,
X1 = multiply(multiply(X0,X1),inverse(X0)),
inference(superposition,[status(thm)],[d13,d7]) ).
cnf(d15,plain,
X1 = multiply(inverse(X0),multiply(X0,X1)),
inference(demodulation,[status(thm)],[d14,d12]) ).
cnf(d16,plain,
multiply(X1,inverse(multiply(X1,inverse(X0)))) = X0,
inference(superposition,[status(thm)],[d13,c0]) ).
cnf(d17,plain,
inverse(multiply(X0,inverse(X1))) = multiply(inverse(X0),X1),
inference(superposition,[status(thm)],[d16,d15]) ).
cnf(d18,plain,
X0 = inverse(inverse(X0)),
inference(superposition,[status(thm)],[d11,d13]) ).
cnf(d19,plain,
multiply(inverse(X0),multiply(X1,X0)) = X1,
inference(superposition,[status(thm)],[d18,d2]) ).
cnf(d20,plain,
multiply(inverse(multiply(X1,X0)),X1) = inverse(X0),
inference(superposition,[status(thm)],[d19,d19]) ).
cnf(d21,plain,
multiply(X0,inverse(multiply(X0,X1))) = inverse(X1),
inference(demodulation,[status(thm)],[d20,d12]) ).
cnf(d22,plain,
multiply(X0,multiply(X3,inverse(multiply(X0,X1)))) = multiply(X3,multiply(X2,inverse(multiply(X2,X1)))),
inference(superposition,[status(thm)],[d3,d4]) ).
cnf(d23,plain,
multiply(X2,multiply(X3,inverse(multiply(X2,X1)))) = multiply(X3,inverse(X1)),
inference(demodulation,[status(thm)],[d22,d21]) ).
cnf(d24,plain,
multiply(X3,multiply(X4,inverse(multiply(X3,multiply(multiply(X4,X2),inverse(multiply(multiply(X0,X2),X1))))))) = multiply(X0,X1),
inference(superposition,[status(thm)],[d7,d0]) ).
cnf(d25,plain,
multiply(X1,inverse(multiply(multiply(X1,X2),inverse(multiply(multiply(X3,X2),X4))))) = multiply(X3,X4),
inference(demodulation,[status(thm)],[d24,d23]) ).
cnf(d26,plain,
multiply(X0,multiply(inverse(multiply(X0,X1)),multiply(multiply(X2,X1),X3))) = multiply(X2,X3),
inference(demodulation,[status(thm)],[d25,d17]) ).
cnf(d27,plain,
X1 = multiply(inverse(X0),multiply(X1,X0)),
inference(superposition,[status(thm)],[d12,d15]) ).
cnf(d28,plain,
multiply(X0,multiply(X2,X1)) = multiply(X2,multiply(X0,X1)),
inference(superposition,[status(thm)],[d27,d26]) ).
cnf(d29,plain,
multiply(multiply(X0,X2),X1) = multiply(X2,multiply(X0,X1)),
inference(superposition,[status(thm)],[d12,d7]) ).
cnf(d30,plain,
inverse(inverse(X0)) = X0,
inference(superposition,[status(thm)],[d13,d11]) ).
cnf(d31,plain,
X1 = multiply(X0,multiply(inverse(X0),X1)),
inference(superposition,[status(thm)],[d30,d15]) ).
cnf(d32,plain,
( multiply(inverse(a1),a1) != multiply(inverse(b1),b1)
| multiply(multiply(a3,b3),c3) != multiply(a3,multiply(b3,c3))
| multiply(multiply(inverse(b2),b2),a2) != a2 ),
inference(resolution,[status(thm)],[d12,c1]) ).
cnf(d33,plain,
( multiply(inverse(a1),a1) != multiply(inverse(b1),b1)
| multiply(multiply(a3,b3),c3) != multiply(a3,multiply(b3,c3))
| multiply(b2,multiply(inverse(b2),a2)) != a2 ),
inference(demodulation,[status(thm)],[d32,d29]) ).
cnf(d34,plain,
( multiply(inverse(a1),a1) != multiply(inverse(b1),b1)
| multiply(multiply(a3,b3),c3) != multiply(a3,multiply(b3,c3))
| a2 != a2 ),
inference(demodulation,[status(thm)],[d33,d31]) ).
cnf(d35,plain,
( multiply(inverse(a1),a1) != multiply(inverse(b1),b1)
| multiply(b3,multiply(a3,c3)) != multiply(a3,multiply(b3,c3))
| a2 != a2 ),
inference(demodulation,[status(thm)],[d34,d29]) ).
cnf(d36,plain,
( multiply(inverse(a1),a1) != multiply(inverse(b1),b1)
| multiply(a3,multiply(b3,c3)) != multiply(a3,multiply(b3,c3))
| a2 != a2 ),
inference(demodulation,[status(thm)],[d35,d28]) ).
cnf(d37,plain,
( multiply(a1,inverse(a1)) != multiply(inverse(b1),b1)
| multiply(a3,multiply(b3,c3)) != multiply(a3,multiply(b3,c3))
| a2 != a2 ),
inference(demodulation,[status(thm)],[d36,d12]) ).
cnf(d38,plain,
( multiply(a1,inverse(a1)) != multiply(b1,inverse(b1))
| multiply(a3,multiply(b3,c3)) != multiply(a3,multiply(b3,c3))
| a2 != a2 ),
inference(demodulation,[status(thm)],[d37,d12]) ).
cnf(d39,plain,
multiply(X1,inverse(X1)) = multiply(X0,inverse(X0)),
inference(superposition,[status(thm)],[d13,d2]) ).
cnf(d40,plain,
( multiply(a3,multiply(b3,c3)) != multiply(a3,multiply(b3,c3))
| a2 != a2 ),
inference(resolution,[status(thm)],[d39,d38]) ).
cnf(d41,plain,
multiply(X1,multiply(inverse(X1),X0)) = X0,
inference(superposition,[status(thm)],[d12,d2]) ).
cnf(d42,plain,
multiply(X2,multiply(X3,inverse(X0))) = multiply(X3,multiply(X1,inverse(multiply(X0,multiply(X1,inverse(X2)))))),
inference(superposition,[status(thm)],[d5,d4]) ).
cnf(d43,plain,
multiply(X0,multiply(multiply(X3,multiply(X1,inverse(multiply(X0,multiply(X1,inverse(X2)))))),inverse(X2))) = X3,
inference(superposition,[status(thm)],[d5,c0]) ).
cnf(d44,plain,
multiply(X2,multiply(multiply(X0,inverse(X3)),multiply(X1,inverse(multiply(X2,multiply(X1,inverse(X3))))))) = X0,
inference(demodulation,[status(thm)],[d43,d7]) ).
cnf(d45,plain,
multiply(X3,multiply(X1,multiply(multiply(X0,inverse(X1)),inverse(X3)))) = X0,
inference(demodulation,[status(thm)],[d44,d42]) ).
cnf(d46,plain,
X1 = multiply(multiply(X1,inverse(inverse(X0))),inverse(X0)),
inference(superposition,[status(thm)],[d45,d41]) ).
cnf(d47,plain,
X0 = multiply(multiply(X0,inverse(X1)),inverse(inverse(X1))),
inference(demodulation,[status(thm)],[d46,d7]) ).
cnf(d48,plain,
X0 = multiply(inverse(inverse(X1)),multiply(X0,inverse(X1))),
inference(demodulation,[status(thm)],[d47,d12]) ).
cnf(d49,plain,
X1 = X1,
inference(demodulation,[status(thm)],[d48,d19]) ).
cnf(d50,plain,
a2 != a2,
inference(resolution,[status(thm)],[d49,d40]) ).
cnf(d51,plain,
$false,
inference(equality_resolution,[status(thm)],[d50]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : GRP086-1 : TPTP v9.3.1. Bugfixed v2.7.0.
% 0.00/0.06 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.17/0.42 % Computer : n003.cluster.edu
% 0.17/0.42 % Model : x86_64 x86_64
% 0.17/0.42 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.17/0.42 % Memory : 8046.5625MB
% 0.17/0.42 % OS : Linux 6.8.0-71-generic
% 0.17/0.42 % CPULimit : 300
% 0.17/0.42 % WCLimit : 300
% 0.17/0.42 % DateTime : Fri Sep 25 14:23:07 UTC 2026
% 0.17/0.43 % CPUTime :
% 0.17/0.43 Running casc-portfolio.sh -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 67.98/10.39 % SZS status Unsatisfiable for theBenchmark.p
% 67.98/10.39 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------