%------------------------------------------------------------------------------
% File : Zipperpin---2.1.9999
% Problem : GRP594-1 : TPTP v9.2.0. Released v2.6.0.
% Transfm : none
% Format : tptp:raw
% Command : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.X9UvXIhVlx true
% Computer : n020.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8042.1875MB
% OS : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Thu Oct 2 04:36:44 PM UTC 2025
% Result : Unsatisfiable 0.57s 0.90s
% Output : Refutation 0.57s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.04/0.12 % Problem : GRP594-1 : TPTP v9.2.0. Released v2.6.0.
% 0.12/0.13 % Command : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.X9UvXIhVlx true
% 0.13/0.34 % Computer : n020.cluster.edu
% 0.13/0.34 % Model : x86_64 x86_64
% 0.13/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34 % Memory : 8042.1875MB
% 0.13/0.34 % OS : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34 % CPULimit : 300
% 0.13/0.34 % WCLimit : 300
% 0.13/0.34 % DateTime : Wed Oct 1 14:09:53 EDT 2025
% 0.13/0.35 % CPUTime :
% 0.13/0.35 % Running portfolio for 300 s
% 0.13/0.35 % File : /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.13/0.35 % Number of cores: 8
% 0.13/0.35 % Python version: Python 3.6.8
% 0.13/0.35 % Running in FO mode
% 0.55/0.64 % Total configuration time : 435
% 0.55/0.64 % Estimated wc time : 1092
% 0.55/0.64 % Estimated cpu time (7 cpus) : 156.0
% 0.56/0.71 % /export/starexec/sandbox/solver/bin/fo/fo6_bce.sh running for 75s
% 0.56/0.72 % /export/starexec/sandbox/solver/bin/fo/fo3_bce.sh running for 75s
% 0.56/0.74 % /export/starexec/sandbox/solver/bin/fo/fo1_av.sh running for 75s
% 0.57/0.76 % /export/starexec/sandbox/solver/bin/fo/fo7.sh running for 63s
% 0.57/0.76 % /export/starexec/sandbox/solver/bin/fo/fo13.sh running for 50s
% 0.57/0.77 % /export/starexec/sandbox/solver/bin/fo/fo5.sh running for 50s
% 0.57/0.77 % /export/starexec/sandbox/solver/bin/fo/fo4.sh running for 50s
% 0.57/0.90 % Solved by fo/fo7.sh.
% 0.57/0.90 % done 41 iterations in 0.119s
% 0.57/0.90 % SZS status Theorem for '/export/starexec/sandbox/benchmark/theBenchmark.p'
% 0.57/0.90 % SZS output start Refutation
% 0.57/0.90 thf(multiply_type, type, multiply: $i > $i > $i).
% 0.57/0.90 thf(a2_type, type, a2: $i).
% 0.57/0.90 thf(inverse_type, type, inverse: $i > $i).
% 0.57/0.90 thf(double_divide_type, type, double_divide: $i > $i > $i).
% 0.57/0.90 thf(b2_type, type, b2: $i).
% 0.57/0.90 thf(single_axiom, axiom,
% 0.57/0.90 (( inverse @
% 0.57/0.90 ( double_divide @
% 0.57/0.90 ( double_divide @ A @ B ) @
% 0.57/0.90 ( inverse @
% 0.57/0.90 ( double_divide @ A @ ( inverse @ ( double_divide @ C @ B ) ) ) ) ) ) =
% 0.57/0.90 ( C ))).
% 0.57/0.90 thf(zip_derived_cl0, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ (double_divide @ X1 @ X2) @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ X1 @ (inverse @ (double_divide @ X0 @ X2))))))
% 0.57/0.90 = (X0))),
% 0.57/0.90 inference('cnf', [status(esa)], [single_axiom])).
% 0.57/0.90 thf(zip_derived_cl0, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ (double_divide @ X1 @ X2) @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ X1 @ (inverse @ (double_divide @ X0 @ X2))))))
% 0.57/0.90 = (X0))),
% 0.57/0.90 inference('cnf', [status(esa)], [single_axiom])).
% 0.57/0.90 thf(zip_derived_cl0, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ (double_divide @ X1 @ X2) @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ X1 @ (inverse @ (double_divide @ X0 @ X2))))))
% 0.57/0.90 = (X0))),
% 0.57/0.90 inference('cnf', [status(esa)], [single_axiom])).
% 0.57/0.90 thf(zip_derived_cl5, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ (double_divide @ X1 @ X2) @
% 0.57/0.90 (inverse @ (double_divide @ X0 @ X2))) @
% 0.57/0.90 X0))
% 0.57/0.90 = (X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl0, zip_derived_cl0])).
% 0.57/0.90 thf(zip_derived_cl12, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ X1 @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ X3 @ (inverse @ (double_divide @ X0 @ X2))))) @
% 0.57/0.90 X0) @
% 0.57/0.90 (double_divide @ X3 @ X2)))
% 0.57/0.90 = (X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl0, zip_derived_cl5])).
% 0.57/0.90 thf(zip_derived_cl5, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ (double_divide @ X1 @ X2) @
% 0.57/0.90 (inverse @ (double_divide @ X0 @ X2))) @
% 0.57/0.90 X0))
% 0.57/0.90 = (X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl0, zip_derived_cl0])).
% 0.57/0.90 thf(zip_derived_cl0, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ (double_divide @ X1 @ X2) @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ X1 @ (inverse @ (double_divide @ X0 @ X2))))))
% 0.57/0.90 = (X0))),
% 0.57/0.90 inference('cnf', [status(esa)], [single_axiom])).
% 0.57/0.90 thf(zip_derived_cl10, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ (double_divide @ X0 @ X3) @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ (inverse @ (double_divide @ X1 @ X2)) @ X3))) @
% 0.57/0.90 X2) @
% 0.57/0.90 X0))
% 0.57/0.90 = (X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl5, zip_derived_cl0])).
% 0.57/0.90 thf(zip_derived_cl34, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((double_divide @
% 0.57/0.90 (double_divide @ (inverse @ (double_divide @ X2 @ X1)) @ X0) @
% 0.57/0.90 (inverse @ (double_divide @ X1 @ X0))) = (X2))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl12, zip_derived_cl10])).
% 0.57/0.90 thf(zip_derived_cl5, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ (double_divide @ X1 @ X2) @
% 0.57/0.90 (inverse @ (double_divide @ X0 @ X2))) @
% 0.57/0.90 X0))
% 0.57/0.90 = (X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl0, zip_derived_cl0])).
% 0.57/0.90 thf(zip_derived_cl44, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ X0 @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ X3 @ (inverse @ (double_divide @ X2 @ X1))))) @
% 0.57/0.90 X3))
% 0.57/0.90 = (double_divide @ (inverse @ (double_divide @ X0 @ X2)) @ X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl34, zip_derived_cl5])).
% 0.57/0.90 thf(zip_derived_cl5, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ (double_divide @ X1 @ X2) @
% 0.57/0.90 (inverse @ (double_divide @ X0 @ X2))) @
% 0.57/0.90 X0))
% 0.57/0.90 = (X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl0, zip_derived_cl0])).
% 0.57/0.90 thf(zip_derived_cl227, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((double_divide @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ X2 @ (inverse @ (double_divide @ X1 @ X0))) @ X1)) @
% 0.57/0.90 X0) = (X2))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl44, zip_derived_cl5])).
% 0.57/0.90 thf(zip_derived_cl34, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((double_divide @
% 0.57/0.90 (double_divide @ (inverse @ (double_divide @ X2 @ X1)) @ X0) @
% 0.57/0.90 (inverse @ (double_divide @ X1 @ X0))) = (X2))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl12, zip_derived_cl10])).
% 0.57/0.90 thf(zip_derived_cl0, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ (double_divide @ X1 @ X2) @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ X1 @ (inverse @ (double_divide @ X0 @ X2))))))
% 0.57/0.90 = (X0))),
% 0.57/0.90 inference('cnf', [status(esa)], [single_axiom])).
% 0.57/0.90 thf(zip_derived_cl56, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ (inverse @ (double_divide @ X0 @ X1)) @ X2) @ X2) @
% 0.57/0.90 (inverse @ X0)))
% 0.57/0.90 = (X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl34, zip_derived_cl0])).
% 0.57/0.90 thf(zip_derived_cl227, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((double_divide @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ X2 @ (inverse @ (double_divide @ X1 @ X0))) @ X1)) @
% 0.57/0.90 X0) = (X2))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl44, zip_derived_cl5])).
% 0.57/0.90 thf(zip_derived_cl290, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((double_divide @ X0 @ X1)
% 0.57/0.90 = (double_divide @ (inverse @ (double_divide @ X2 @ X0)) @
% 0.57/0.90 (inverse @ (double_divide @ (inverse @ X2) @ X1))))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl56, zip_derived_cl227])).
% 0.57/0.90 thf(zip_derived_cl34, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((double_divide @
% 0.57/0.90 (double_divide @ (inverse @ (double_divide @ X2 @ X1)) @ X0) @
% 0.57/0.90 (inverse @ (double_divide @ X1 @ X0))) = (X2))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl12, zip_derived_cl10])).
% 0.57/0.90 thf(zip_derived_cl359, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((double_divide @ (double_divide @ X1 @ X0) @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ X1 @
% 0.57/0.90 (inverse @ (double_divide @ (inverse @ X2) @ X0)))))
% 0.57/0.90 = (X2))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl290, zip_derived_cl34])).
% 0.57/0.90 thf(zip_derived_cl12, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ X1 @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ X3 @ (inverse @ (double_divide @ X0 @ X2))))) @
% 0.57/0.90 X0) @
% 0.57/0.90 (double_divide @ X3 @ X2)))
% 0.57/0.90 = (X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl0, zip_derived_cl5])).
% 0.57/0.90 thf(zip_derived_cl413, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ (double_divide @ X0 @ (inverse @ X0)) @
% 0.57/0.90 (double_divide @ X2 @ X1)))
% 0.57/0.90 = (double_divide @ X2 @ X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl359, zip_derived_cl12])).
% 0.57/0.90 thf(zip_derived_cl470, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ (double_divide @ X3 @ (inverse @ X3)) @ X0))
% 0.57/0.90 = (double_divide @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ X0 @ (inverse @ (double_divide @ X2 @ X1))) @
% 0.57/0.90 X2)) @
% 0.57/0.90 X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl227, zip_derived_cl413])).
% 0.57/0.90 thf(zip_derived_cl227, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((double_divide @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @
% 0.57/0.90 (double_divide @ X2 @ (inverse @ (double_divide @ X1 @ X0))) @ X1)) @
% 0.57/0.90 X0) = (X2))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl44, zip_derived_cl5])).
% 0.57/0.90 thf(zip_derived_cl487, plain,
% 0.57/0.90 (![X0 : $i, X3 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ (double_divide @ X3 @ (inverse @ X3)) @ X0)) = (
% 0.57/0.90 X0))),
% 0.57/0.90 inference('demod', [status(thm)], [zip_derived_cl470, zip_derived_cl227])).
% 0.57/0.90 thf(zip_derived_cl0, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ (double_divide @ X1 @ X2) @
% 0.57/0.90 (inverse @
% 0.57/0.90 (double_divide @ X1 @ (inverse @ (double_divide @ X0 @ X2))))))
% 0.57/0.90 = (X0))),
% 0.57/0.90 inference('cnf', [status(esa)], [single_axiom])).
% 0.57/0.90 thf(zip_derived_cl516, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ X0 @
% 0.57/0.90 (inverse @ (double_divide @ X1 @ (inverse @ X0)))))
% 0.57/0.90 = (X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl487, zip_derived_cl0])).
% 0.57/0.90 thf(zip_derived_cl487, plain,
% 0.57/0.90 (![X0 : $i, X3 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ (double_divide @ X3 @ (inverse @ X3)) @ X0)) = (
% 0.57/0.90 X0))),
% 0.57/0.90 inference('demod', [status(thm)], [zip_derived_cl470, zip_derived_cl227])).
% 0.57/0.90 thf(zip_derived_cl516, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ X0 @
% 0.57/0.90 (inverse @ (double_divide @ X1 @ (inverse @ X0)))))
% 0.57/0.90 = (X1))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl487, zip_derived_cl0])).
% 0.57/0.90 thf(zip_derived_cl570, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i]:
% 0.57/0.90 ((inverse @ (double_divide @ X0 @ (inverse @ X0)))
% 0.57/0.90 = (double_divide @ X1 @ (inverse @ X1)))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl487, zip_derived_cl516])).
% 0.57/0.90 thf(zip_derived_cl570, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i]:
% 0.57/0.90 ((inverse @ (double_divide @ X0 @ (inverse @ X0)))
% 0.57/0.90 = (double_divide @ X1 @ (inverse @ X1)))),
% 0.57/0.90 inference('sup+', [status(thm)], [zip_derived_cl487, zip_derived_cl516])).
% 0.57/0.90 thf(prove_these_axioms_2, conjecture,
% 0.57/0.90 (( multiply @ ( multiply @ ( inverse @ b2 ) @ b2 ) @ a2 ) = ( a2 ))).
% 0.57/0.90 thf(zf_stmt_0, negated_conjecture,
% 0.57/0.90 (( multiply @ ( multiply @ ( inverse @ b2 ) @ b2 ) @ a2 ) != ( a2 )),
% 0.57/0.90 inference('cnf.neg', [status(esa)], [prove_these_axioms_2])).
% 0.57/0.90 thf(zip_derived_cl2, plain,
% 0.57/0.90 (((multiply @ (multiply @ (inverse @ b2) @ b2) @ a2) != (a2))),
% 0.57/0.90 inference('cnf', [status(esa)], [zf_stmt_0])).
% 0.57/0.90 thf(multiply, axiom,
% 0.57/0.90 (( multiply @ A @ B ) = ( inverse @ ( double_divide @ B @ A ) ))).
% 0.57/0.90 thf(zip_derived_cl1, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i]:
% 0.57/0.90 ((multiply @ X1 @ X0) = (inverse @ (double_divide @ X0 @ X1)))),
% 0.57/0.90 inference('cnf', [status(esa)], [multiply])).
% 0.57/0.90 thf(zip_derived_cl1, plain,
% 0.57/0.90 (![X0 : $i, X1 : $i]:
% 0.57/0.90 ((multiply @ X1 @ X0) = (inverse @ (double_divide @ X0 @ X1)))),
% 0.57/0.90 inference('cnf', [status(esa)], [multiply])).
% 0.57/0.90 thf(zip_derived_cl3, plain,
% 0.57/0.90 (((inverse @
% 0.57/0.90 (double_divide @ a2 @
% 0.57/0.90 (inverse @ (double_divide @ b2 @ (inverse @ b2)))))
% 0.57/0.90 != (a2))),
% 0.57/0.90 inference('demod', [status(thm)],
% 0.57/0.90 [zip_derived_cl2, zip_derived_cl1, zip_derived_cl1])).
% 0.57/0.90 thf(zip_derived_cl667, plain,
% 0.57/0.90 (![X0 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ a2 @ (double_divide @ X0 @ (inverse @ X0))))
% 0.57/0.90 != (a2))),
% 0.57/0.90 inference('sup-', [status(thm)], [zip_derived_cl570, zip_derived_cl3])).
% 0.57/0.90 thf(zip_derived_cl705, plain,
% 0.57/0.90 (![X0 : $i]:
% 0.57/0.90 ((inverse @
% 0.57/0.90 (double_divide @ a2 @
% 0.57/0.90 (inverse @ (double_divide @ X0 @ (inverse @ X0)))))
% 0.57/0.90 != (a2))),
% 0.57/0.90 inference('sup-', [status(thm)], [zip_derived_cl570, zip_derived_cl667])).
% 0.57/0.90 thf(zip_derived_cl719, plain, (((a2) != (a2))),
% 0.57/0.90 inference('sup-', [status(thm)], [zip_derived_cl516, zip_derived_cl705])).
% 0.57/0.90 thf(zip_derived_cl736, plain, ($false),
% 0.57/0.90 inference('simplify', [status(thm)], [zip_derived_cl719])).
% 0.57/0.90
% 0.57/0.90 % SZS output end Refutation
% 0.57/0.90
% 0.57/0.90
% 0.57/0.90 % Terminating...
% 1.61/0.96 % Runner terminated.
% 1.61/0.97 % Zipperpin 1.5 exiting
%------------------------------------------------------------------------------