%------------------------------------------------------------------------------
% File : LisaST---0.9
% Problem : GRP079-1 : TPTP v9.3.1. Bugfixed v2.3.0.
% Transfm : none
% Format : tptp:raw
% Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n019.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 07:22:16 AM UTC 2026
% Result : Unsatisfiable 43.87s 10.15s
% Output : CNFRefutation 43.87s
% Verified :
% SZS Type : Refutation
% Derivation depth : 44
% Number of leaves : 5
% Syntax : Number of clauses : 134 ( 127 unt; 0 nHn; 11 RR)
% Number of literals : 147 ( 146 equ; 21 neg)
% Maximal clause size : 3 ( 1 avg)
% Maximal term depth : 9 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 9 ( 9 usr; 6 con; 0-2 aty)
% Number of variables : 228 ( 0 sgn)
% Comments :
%------------------------------------------------------------------------------
cnf(single_axiom,axiom,
'double$udivide'('double$udivide'(identity,X0),'double$udivide'('double$udivide'('double$udivide'(X1,X2),'double$udivide'(identity,identity)),'double$udivide'(X0,X2))) = X1 ).
cnf(multiply,axiom,
multiply(X0,X1) = 'double$udivide'('double$udivide'(X1,X0),identity) ).
cnf(inverse,axiom,
inverse(X0) = 'double$udivide'(X0,identity) ).
cnf(identity,axiom,
identity = 'double$udivide'(X0,inverse(X0)) ).
cnf(prove_these_axioms,negated_conjecture,
( multiply(multiply(a3,b3),c3) != multiply(a3,multiply(b3,c3))
| multiply(identity,a2) != a2
| multiply(inverse(a1),a1) != identity ) ).
cnf(c0,plain,
'double$udivide'('double$udivide'(identity,X0),'double$udivide'('double$udivide'('double$udivide'(X1,X2),'double$udivide'(identity,identity)),'double$udivide'(X0,X2))) = X1,
inference(clausification,[status(esa)],[single_axiom]) ).
cnf(c1,plain,
multiply(X0,X1) = 'double$udivide'('double$udivide'(X1,X0),identity),
inference(clausification,[status(esa)],[multiply]) ).
cnf(c2,plain,
inverse(X0) = 'double$udivide'(X0,identity),
inference(clausification,[status(esa)],[inverse]) ).
cnf(c3,plain,
identity = 'double$udivide'(X0,inverse(X0)),
inference(clausification,[status(esa)],[identity]) ).
cnf(c4,plain,
( multiply(multiply(a3,b3),c3) != multiply(a3,multiply(b3,c3))
| multiply(identity,a2) != a2
| multiply(inverse(a1),a1) != identity ),
inference(clausification,[status(esa)],[prove_these_axioms]) ).
cnf(d0,plain,
multiply(X1,X0) = inverse('double$udivide'(X0,X1)),
inference(demodulation,[status(thm)],[c1,c2]) ).
cnf(d1,plain,
multiply(inverse(X0),X0) = inverse(identity),
inference(superposition,[status(thm)],[c3,d0]) ).
cnf(d2,plain,
'double$udivide'('double$udivide'(identity,X0),'double$udivide'('double$udivide'('double$udivide'(X1,X2),inverse(identity)),'double$udivide'(X0,X2))) = X1,
inference(demodulation,[status(thm)],[c0,c2]) ).
cnf(d3,plain,
'double$udivide'('double$udivide'(identity,X0),'double$udivide'('double$udivide'('double$udivide'(X1,inverse(X0)),inverse(identity)),identity)) = X1,
inference(superposition,[status(thm)],[c3,d2]) ).
cnf(d4,plain,
'double$udivide'('double$udivide'(identity,X1),inverse('double$udivide'('double$udivide'(X0,inverse(X1)),inverse(identity)))) = X0,
inference(demodulation,[status(thm)],[d3,c2]) ).
cnf(d5,plain,
'double$udivide'('double$udivide'(identity,X1),multiply(inverse(identity),'double$udivide'(X0,inverse(X1)))) = X0,
inference(demodulation,[status(thm)],[d4,d0]) ).
cnf(d6,plain,
'double$udivide'('double$udivide'(identity,X0),multiply(inverse(identity),identity)) = X0,
inference(superposition,[status(thm)],[c3,d5]) ).
cnf(d7,plain,
'double$udivide'('double$udivide'(identity,X0),inverse(identity)) = X0,
inference(demodulation,[status(thm)],[d6,d1]) ).
cnf(d8,plain,
'double$udivide'(identity,inverse(identity)) = inverse(identity),
inference(superposition,[status(thm)],[c3,d7]) ).
cnf(d9,plain,
identity = inverse(identity),
inference(demodulation,[status(thm)],[d8,c3]) ).
cnf(d10,plain,
'double$udivide'('double$udivide'(identity,X0),identity) = X0,
inference(demodulation,[status(thm)],[d7,d9]) ).
cnf(d11,plain,
inverse('double$udivide'(identity,X0)) = X0,
inference(demodulation,[status(thm)],[d10,c2]) ).
cnf(d12,plain,
multiply(X0,identity) = X0,
inference(demodulation,[status(thm)],[d11,d0]) ).
cnf(d13,plain,
multiply(identity,X0) = inverse(inverse(X0)),
inference(superposition,[status(thm)],[c2,d0]) ).
cnf(d14,plain,
multiply(identity,'double$udivide'(X0,X1)) = inverse(multiply(X1,X0)),
inference(superposition,[status(thm)],[d0,d13]) ).
cnf(d15,plain,
multiply(inverse(identity),'double$udivide'(identity,X0)) = inverse(X0),
inference(superposition,[status(thm)],[d7,d0]) ).
cnf(d16,plain,
multiply(identity,'double$udivide'(identity,X0)) = inverse(X0),
inference(demodulation,[status(thm)],[d15,d9]) ).
cnf(d17,plain,
inverse(multiply(X0,identity)) = inverse(X0),
inference(demodulation,[status(thm)],[d16,d14]) ).
cnf(d18,plain,
inverse(X0) = inverse(X0),
inference(demodulation,[status(thm)],[d17,d12]) ).
cnf(d19,plain,
inverse('double$udivide'(X0,X1)) = multiply(X1,X0),
inference(superposition,[status(thm)],[d0,d18]) ).
cnf(d20,plain,
'double$udivide'(inverse(identity),'double$udivide'('double$udivide'('double$udivide'(X0,X1),inverse(identity)),'double$udivide'(identity,X1))) = X0,
inference(superposition,[status(thm)],[c2,d2]) ).
cnf(d21,plain,
'double$udivide'(inverse(identity),'double$udivide'('double$udivide'(inverse(X0),inverse(identity)),'double$udivide'(identity,identity))) = X0,
inference(superposition,[status(thm)],[c2,d20]) ).
cnf(d22,plain,
'double$udivide'(inverse(identity),'double$udivide'('double$udivide'(inverse(X0),inverse(identity)),inverse(identity))) = X0,
inference(demodulation,[status(thm)],[d21,c2]) ).
cnf(d23,plain,
'double$udivide'(identity,'double$udivide'('double$udivide'(inverse(X0),inverse(identity)),inverse(identity))) = X0,
inference(demodulation,[status(thm)],[d22,d9]) ).
cnf(d24,plain,
'double$udivide'(identity,'double$udivide'('double$udivide'(inverse(X0),identity),inverse(identity))) = X0,
inference(demodulation,[status(thm)],[d23,d9]) ).
cnf(d25,plain,
'double$udivide'(identity,'double$udivide'('double$udivide'(inverse(X0),identity),identity)) = X0,
inference(demodulation,[status(thm)],[d24,d9]) ).
cnf(d26,plain,
'double$udivide'(identity,inverse('double$udivide'(inverse(X0),identity))) = X0,
inference(demodulation,[status(thm)],[d25,c2]) ).
cnf(d27,plain,
'double$udivide'(identity,multiply(identity,inverse(X0))) = X0,
inference(demodulation,[status(thm)],[d26,d0]) ).
cnf(d28,plain,
inverse(X0) = multiply(multiply(identity,inverse(X0)),identity),
inference(superposition,[status(thm)],[d27,d19]) ).
cnf(d29,plain,
inverse(X0) = multiply(identity,inverse(X0)),
inference(demodulation,[status(thm)],[d28,d12]) ).
cnf(d30,plain,
'double$udivide'(identity,inverse(X0)) = X0,
inference(demodulation,[status(thm)],[d27,d29]) ).
cnf(d31,plain,
multiply(identity,inverse(X0)) = inverse(multiply(identity,X0)),
inference(superposition,[status(thm)],[d13,d13]) ).
cnf(d32,plain,
inverse(multiply(identity,X0)) = multiply(identity,inverse(X0)),
inference(superposition,[status(thm)],[d31,d18]) ).
cnf(d33,plain,
inverse(multiply(identity,X0)) = inverse(X0),
inference(demodulation,[status(thm)],[d32,d29]) ).
cnf(d34,plain,
'double$udivide'(identity,inverse(X0)) = multiply(identity,X0),
inference(superposition,[status(thm)],[d33,d30]) ).
cnf(d35,plain,
X0 = multiply(identity,X0),
inference(demodulation,[status(thm)],[d34,d30]) ).
cnf(d36,plain,
inverse(inverse(X0)) = multiply(identity,X0),
inference(superposition,[status(thm)],[d13,d18]) ).
cnf(d37,plain,
'double$udivide'(identity,multiply(identity,X0)) = inverse(X0),
inference(superposition,[status(thm)],[d36,d30]) ).
cnf(d38,plain,
'double$udivide'(identity,X0) = inverse(X0),
inference(demodulation,[status(thm)],[d37,d35]) ).
cnf(d39,plain,
'double$udivide'(identity,'double$udivide'('double$udivide'('double$udivide'(X0,X1),inverse(identity)),'double$udivide'(inverse(identity),X1))) = X0,
inference(superposition,[status(thm)],[c3,d2]) ).
cnf(d40,plain,
'double$udivide'(identity,'double$udivide'('double$udivide'('double$udivide'(X0,X1),identity),'double$udivide'(inverse(identity),X1))) = X0,
inference(demodulation,[status(thm)],[d39,d9]) ).
cnf(d41,plain,
'double$udivide'(identity,'double$udivide'(inverse('double$udivide'(X0,X1)),'double$udivide'(inverse(identity),X1))) = X0,
inference(demodulation,[status(thm)],[d40,c2]) ).
cnf(d42,plain,
'double$udivide'(identity,'double$udivide'(multiply(X1,X0),'double$udivide'(inverse(identity),X1))) = X0,
inference(demodulation,[status(thm)],[d41,d0]) ).
cnf(d43,plain,
'double$udivide'(identity,'double$udivide'(multiply(X0,X1),'double$udivide'(identity,X0))) = X1,
inference(demodulation,[status(thm)],[d42,d9]) ).
cnf(d44,plain,
inverse('double$udivide'(multiply(X0,X1),'double$udivide'(identity,X0))) = X1,
inference(demodulation,[status(thm)],[d43,d38]) ).
cnf(d45,plain,
inverse('double$udivide'(multiply(X0,X1),inverse(X0))) = X1,
inference(demodulation,[status(thm)],[d44,d38]) ).
cnf(d46,plain,
multiply(inverse(X0),multiply(X0,X1)) = X1,
inference(demodulation,[status(thm)],[d45,d0]) ).
cnf(d47,plain,
multiply(multiply(X1,X0),multiply('double$udivide'(X0,X1),X2)) = X2,
inference(superposition,[status(thm)],[d19,d46]) ).
cnf(d48,plain,
inverse(inverse(X0)) = X0,
inference(demodulation,[status(thm)],[d36,d35]) ).
cnf(d49,plain,
'double$udivide'(X0,X1) = inverse(multiply(X1,X0)),
inference(demodulation,[status(thm)],[d14,d35]) ).
cnf(d50,plain,
identity = 'double$udivide'(inverse(X0),multiply(identity,X0)),
inference(superposition,[status(thm)],[d13,c3]) ).
cnf(d51,plain,
identity = 'double$udivide'(multiply(identity,inverse(X0)),multiply(identity,multiply(identity,X0))),
inference(superposition,[status(thm)],[d31,d50]) ).
cnf(d52,plain,
'double$udivide'('double$udivide'(identity,multiply(identity,inverse(X0))),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,X0))),inverse(identity)),identity)) = X1,
inference(superposition,[status(thm)],[d51,d2]) ).
cnf(d53,plain,
'double$udivide'(inverse(multiply(identity,inverse(X0))),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,X0))),inverse(identity)),identity)) = X1,
inference(demodulation,[status(thm)],[d52,d38]) ).
cnf(d54,plain,
'double$udivide'('double$udivide'(inverse(X0),identity),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,X0))),inverse(identity)),identity)) = X1,
inference(demodulation,[status(thm)],[d53,d49]) ).
cnf(d55,plain,
'double$udivide'(inverse(inverse(X0)),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,X0))),inverse(identity)),identity)) = X1,
inference(demodulation,[status(thm)],[d54,c2]) ).
cnf(d56,plain,
'double$udivide'(X0,'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,X0))),inverse(identity)),identity)) = X1,
inference(demodulation,[status(thm)],[d55,d48]) ).
cnf(d57,plain,
'double$udivide'(X1,inverse('double$udivide'('double$udivide'(X0,multiply(identity,multiply(identity,X1))),inverse(identity)))) = X0,
inference(demodulation,[status(thm)],[d56,c2]) ).
cnf(d58,plain,
'double$udivide'(X1,multiply(inverse(identity),'double$udivide'(X0,multiply(identity,multiply(identity,X1))))) = X0,
inference(demodulation,[status(thm)],[d57,d0]) ).
cnf(d59,plain,
'double$udivide'(X0,multiply(identity,'double$udivide'(X1,multiply(identity,multiply(identity,X0))))) = X1,
inference(demodulation,[status(thm)],[d58,d9]) ).
cnf(d60,plain,
'double$udivide'(X1,'double$udivide'(X0,multiply(identity,multiply(identity,X1)))) = X0,
inference(demodulation,[status(thm)],[d59,d35]) ).
cnf(d61,plain,
'double$udivide'(X0,'double$udivide'(X1,multiply(identity,X0))) = X1,
inference(demodulation,[status(thm)],[d60,d35]) ).
cnf(d62,plain,
'double$udivide'(X0,'double$udivide'(X1,X0)) = X1,
inference(demodulation,[status(thm)],[d61,d35]) ).
cnf(d63,plain,
'double$udivide'('double$udivide'(X1,X0),X1) = X0,
inference(superposition,[status(thm)],[d62,d62]) ).
cnf(d64,plain,
'double$udivide'('double$udivide'(identity,X1),'double$udivide'('double$udivide'(identity,inverse(identity)),'double$udivide'(X1,multiply(identity,multiply(identity,X0))))) = multiply(identity,inverse(X0)),
inference(superposition,[status(thm)],[d51,d2]) ).
cnf(d65,plain,
'double$udivide'(inverse(X0),'double$udivide'('double$udivide'(identity,inverse(identity)),'double$udivide'(X0,multiply(identity,multiply(identity,X1))))) = multiply(identity,inverse(X1)),
inference(demodulation,[status(thm)],[d64,d38]) ).
cnf(d66,plain,
'double$udivide'(inverse(X0),'double$udivide'(inverse(inverse(identity)),'double$udivide'(X0,multiply(identity,multiply(identity,X1))))) = multiply(identity,inverse(X1)),
inference(demodulation,[status(thm)],[d65,d38]) ).
cnf(d67,plain,
'double$udivide'(inverse(X0),'double$udivide'(identity,'double$udivide'(X0,multiply(identity,multiply(identity,X1))))) = multiply(identity,inverse(X1)),
inference(demodulation,[status(thm)],[d66,d48]) ).
cnf(d68,plain,
'double$udivide'(inverse(X0),inverse('double$udivide'(X0,multiply(identity,multiply(identity,X1))))) = multiply(identity,inverse(X1)),
inference(demodulation,[status(thm)],[d67,d38]) ).
cnf(d69,plain,
'double$udivide'(inverse(X0),multiply(multiply(identity,multiply(identity,X1)),X0)) = multiply(identity,inverse(X1)),
inference(demodulation,[status(thm)],[d68,d0]) ).
cnf(d70,plain,
'double$udivide'(inverse(X1),multiply(multiply(identity,X0),X1)) = multiply(identity,inverse(X0)),
inference(demodulation,[status(thm)],[d69,d35]) ).
cnf(d71,plain,
'double$udivide'(inverse(X1),multiply(X0,X1)) = multiply(identity,inverse(X0)),
inference(demodulation,[status(thm)],[d70,d35]) ).
cnf(d72,plain,
'double$udivide'(inverse(X1),multiply(X0,X1)) = inverse(X0),
inference(demodulation,[status(thm)],[d71,d35]) ).
cnf(d73,plain,
'double$udivide'(inverse(X1),inverse(X0)) = multiply(X1,X0),
inference(superposition,[status(thm)],[d72,d63]) ).
cnf(d74,plain,
'double$udivide'(inverse(X2),'double$udivide'(X1,X0)) = multiply(X2,multiply(X0,X1)),
inference(superposition,[status(thm)],[d49,d73]) ).
cnf(d75,plain,
'double$udivide'('double$udivide'(identity,'double$udivide'(identity,X0)),'double$udivide'('double$udivide'('double$udivide'(X3,'double$udivide'('double$udivide'('double$udivide'(X1,X2),inverse(identity)),'double$udivide'(X0,X2))),inverse(identity)),X1)) = X3,
inference(superposition,[status(thm)],[d2,d2]) ).
cnf(d76,plain,
'double$udivide'('double$udivide'(identity,'double$udivide'(identity,inverse(X0))),'double$udivide'('double$udivide'('double$udivide'(X1,'double$udivide'('double$udivide'('double$udivide'(X2,multiply(identity,X0)),inverse(identity)),identity)),inverse(identity)),X2)) = X1,
inference(superposition,[status(thm)],[d50,d75]) ).
cnf(d77,plain,
'double$udivide'(inverse('double$udivide'(identity,inverse(X0))),'double$udivide'('double$udivide'('double$udivide'(X1,'double$udivide'('double$udivide'('double$udivide'(X2,multiply(identity,X0)),inverse(identity)),identity)),inverse(identity)),X2)) = X1,
inference(demodulation,[status(thm)],[d76,d38]) ).
cnf(d78,plain,
'double$udivide'(multiply(inverse(X0),identity),'double$udivide'('double$udivide'('double$udivide'(X1,'double$udivide'('double$udivide'('double$udivide'(X2,multiply(identity,X0)),inverse(identity)),identity)),inverse(identity)),X2)) = X1,
inference(demodulation,[status(thm)],[d77,d0]) ).
cnf(d79,plain,
'double$udivide'(inverse(X0),'double$udivide'('double$udivide'('double$udivide'(X1,'double$udivide'('double$udivide'('double$udivide'(X2,multiply(identity,X0)),inverse(identity)),identity)),inverse(identity)),X2)) = X1,
inference(demodulation,[status(thm)],[d78,d12]) ).
cnf(d80,plain,
'double$udivide'(inverse(X1),'double$udivide'('double$udivide'('double$udivide'(X2,inverse('double$udivide'('double$udivide'(X0,multiply(identity,X1)),inverse(identity)))),inverse(identity)),X0)) = X2,
inference(demodulation,[status(thm)],[d79,c2]) ).
cnf(d81,plain,
'double$udivide'(inverse(X1),'double$udivide'('double$udivide'('double$udivide'(X2,multiply(inverse(identity),'double$udivide'(X0,multiply(identity,X1)))),inverse(identity)),X0)) = X2,
inference(demodulation,[status(thm)],[d80,d0]) ).
cnf(d82,plain,
'double$udivide'(inverse(X0),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,'double$udivide'(X2,multiply(identity,X0)))),inverse(identity)),X2)) = X1,
inference(demodulation,[status(thm)],[d81,d9]) ).
cnf(d83,plain,
'double$udivide'(inverse(X1),'double$udivide'('double$udivide'('double$udivide'(X2,'double$udivide'(X0,multiply(identity,X1))),inverse(identity)),X0)) = X2,
inference(demodulation,[status(thm)],[d82,d35]) ).
cnf(d84,plain,
'double$udivide'(inverse(X0),'double$udivide'('double$udivide'('double$udivide'(X1,'double$udivide'(X2,X0)),inverse(identity)),X2)) = X1,
inference(demodulation,[status(thm)],[d83,d35]) ).
cnf(d85,plain,
'double$udivide'(inverse(X0),'double$udivide'('double$udivide'('double$udivide'(X1,'double$udivide'(X2,X0)),identity),X2)) = X1,
inference(demodulation,[status(thm)],[d84,d9]) ).
cnf(d86,plain,
'double$udivide'(inverse(X2),'double$udivide'(inverse('double$udivide'(X0,'double$udivide'(X1,X2))),X1)) = X0,
inference(demodulation,[status(thm)],[d85,c2]) ).
cnf(d87,plain,
'double$udivide'(inverse(X2),'double$udivide'(multiply('double$udivide'(X1,X2),X0),X1)) = X0,
inference(demodulation,[status(thm)],[d86,d0]) ).
cnf(d88,plain,
inverse(multiply(X1,X0)) = 'double$udivide'(X0,X1),
inference(superposition,[status(thm)],[d19,d48]) ).
cnf(d89,plain,
inverse(X1) = multiply('double$udivide'(X1,X0),X0),
inference(superposition,[status(thm)],[d62,d19]) ).
cnf(d90,plain,
inverse(inverse(X0)) = 'double$udivide'(X1,'double$udivide'(X0,X1)),
inference(superposition,[status(thm)],[d89,d88]) ).
cnf(d91,plain,
X0 = 'double$udivide'(X1,'double$udivide'(X0,X1)),
inference(demodulation,[status(thm)],[d90,d48]) ).
cnf(d92,plain,
'double$udivide'(inverse('double$udivide'(X1,X0)),'double$udivide'(multiply(X1,X2),X0)) = X2,
inference(superposition,[status(thm)],[d91,d87]) ).
cnf(d93,plain,
multiply('double$udivide'(X0,X1),multiply(X1,multiply(X0,X2))) = X2,
inference(demodulation,[status(thm)],[d92,d74]) ).
cnf(d94,plain,
multiply(multiply(X1,X0),X2) = multiply(X1,multiply(X0,X2)),
inference(superposition,[status(thm)],[d93,d47]) ).
cnf(d95,plain,
( inverse(identity) != identity
| multiply(multiply(a3,b3),c3) != multiply(a3,multiply(b3,c3))
| multiply(identity,a2) != a2 ),
inference(demodulation,[status(thm)],[c4,d1]) ).
cnf(d96,plain,
( identity != identity
| multiply(multiply(a3,b3),c3) != multiply(a3,multiply(b3,c3))
| multiply(identity,a2) != a2 ),
inference(demodulation,[status(thm)],[d95,d9]) ).
cnf(d97,plain,
( multiply(multiply(a3,b3),c3) != multiply(a3,multiply(b3,c3))
| a2 != a2
| identity != identity ),
inference(demodulation,[status(thm)],[d96,d35]) ).
cnf(d98,plain,
( multiply(a3,multiply(b3,c3)) != multiply(a3,multiply(b3,c3))
| a2 != a2
| identity != identity ),
inference(demodulation,[status(thm)],[d97,d94]) ).
cnf(d99,plain,
X0 = inverse(inverse(X0)),
inference(demodulation,[status(thm)],[d13,d35]) ).
cnf(d100,plain,
multiply(X0,multiply(inverse(X0),X1)) = X1,
inference(superposition,[status(thm)],[d99,d46]) ).
cnf(d101,plain,
inverse(X1) = multiply(X0,'double$udivide'(X0,X1)),
inference(superposition,[status(thm)],[d63,d19]) ).
cnf(d102,plain,
multiply(X0,inverse(X1)) = 'double$udivide'(inverse(X0),X1),
inference(superposition,[status(thm)],[d101,d100]) ).
cnf(d103,plain,
'double$udivide'(multiply(X1,X0),inverse(X1)) = inverse(X0),
inference(superposition,[status(thm)],[d72,d62]) ).
cnf(d104,plain,
multiply(X0,X1) = 'double$udivide'(inverse(X0),inverse(X1)),
inference(superposition,[status(thm)],[d103,d91]) ).
cnf(d105,plain,
identity = 'double$udivide'(multiply(identity,X0),multiply(identity,inverse(X0))),
inference(superposition,[status(thm)],[d13,d50]) ).
cnf(d106,plain,
identity = 'double$udivide'(multiply(identity,multiply(identity,X0)),multiply(identity,multiply(identity,inverse(X0)))),
inference(superposition,[status(thm)],[d31,d105]) ).
cnf(d107,plain,
'double$udivide'('double$udivide'(identity,multiply(identity,multiply(identity,X0))),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,inverse(X0)))),inverse(identity)),identity)) = X1,
inference(superposition,[status(thm)],[d106,d2]) ).
cnf(d108,plain,
'double$udivide'(inverse(multiply(identity,multiply(identity,X0))),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,inverse(X0)))),inverse(identity)),identity)) = X1,
inference(demodulation,[status(thm)],[d107,d38]) ).
cnf(d109,plain,
'double$udivide'('double$udivide'(multiply(identity,X0),identity),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,inverse(X0)))),inverse(identity)),identity)) = X1,
inference(demodulation,[status(thm)],[d108,d49]) ).
cnf(d110,plain,
'double$udivide'(inverse(multiply(identity,X0)),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,inverse(X0)))),inverse(identity)),identity)) = X1,
inference(demodulation,[status(thm)],[d109,c2]) ).
cnf(d111,plain,
'double$udivide'('double$udivide'(X0,identity),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,inverse(X0)))),inverse(identity)),identity)) = X1,
inference(demodulation,[status(thm)],[d110,d49]) ).
cnf(d112,plain,
'double$udivide'(inverse(X0),'double$udivide'('double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,inverse(X0)))),inverse(identity)),identity)) = X1,
inference(demodulation,[status(thm)],[d111,c2]) ).
cnf(d113,plain,
'double$udivide'(inverse(X1),inverse('double$udivide'('double$udivide'(X0,multiply(identity,multiply(identity,inverse(X1)))),inverse(identity)))) = X0,
inference(demodulation,[status(thm)],[d112,c2]) ).
cnf(d114,plain,
multiply(X0,'double$udivide'('double$udivide'(X1,multiply(identity,multiply(identity,inverse(X0)))),inverse(identity))) = X1,
inference(demodulation,[status(thm)],[d113,d104]) ).
cnf(d115,plain,
multiply(X0,'double$udivide'('double$udivide'(X1,multiply(identity,inverse(X0))),inverse(identity))) = X1,
inference(demodulation,[status(thm)],[d114,d35]) ).
cnf(d116,plain,
multiply(X0,'double$udivide'('double$udivide'(X1,inverse(X0)),inverse(identity))) = X1,
inference(demodulation,[status(thm)],[d115,d35]) ).
cnf(d117,plain,
multiply(X0,'double$udivide'('double$udivide'(X1,inverse(X0)),identity)) = X1,
inference(demodulation,[status(thm)],[d116,d9]) ).
cnf(d118,plain,
multiply(X1,inverse('double$udivide'(X0,inverse(X1)))) = X0,
inference(demodulation,[status(thm)],[d117,c2]) ).
cnf(d119,plain,
'double$udivide'(inverse(X0),'double$udivide'(X1,inverse(X0))) = X1,
inference(demodulation,[status(thm)],[d118,d102]) ).
cnf(d120,plain,
X1 = X1,
inference(demodulation,[status(thm)],[d119,d62]) ).
cnf(d121,plain,
( multiply(a3,multiply(b3,c3)) != multiply(a3,multiply(b3,c3))
| a2 != a2 ),
inference(resolution,[status(thm)],[d120,d98]) ).
cnf(d122,plain,
a2 != a2,
inference(equality_resolution,[status(thm)],[d121]) ).
cnf(d123,plain,
$false,
inference(resolution,[status(thm)],[d120,d122]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : GRP079-1 : TPTP v9.3.1. Bugfixed v2.3.0.
% 0.00/0.04 % Command : casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/0.36 % Computer : n019.cluster.edu
% 0.08/0.36 % Model : x86_64 x86_64
% 0.08/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.36 % Memory : 8046.5625MB
% 0.08/0.36 % OS : Linux 6.8.0-71-generic
% 0.08/0.36 % CPULimit : 300
% 0.08/0.36 % WCLimit : 300
% 0.08/0.36 % DateTime : Fri Sep 25 14:21:18 UTC 2026
% 0.08/0.36 % CPUTime :
% 0.08/0.36 Running casc-portfolio.sh -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 43.87/10.15 % SZS status Unsatisfiable for theBenchmark.p
% 43.87/10.15 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
%------------------------------------------------------------------------------