TSTP Solution File: GRP602-1 by Zipperpin---2.1.9999

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Zipperpin---2.1.9999
% Problem  : GRP602-1 : TPTP v8.1.2. Released v2.6.0.
% Transfm  : NO INFORMATION
% Format   : NO INFORMATION
% Command  : python3 /export/starexec/sandbox2/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox2/tmp/tmp.VDKw7EYmx3 true

% Computer : n031.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 Aug 31 01:52:16 EDT 2023

% Result   : Unsatisfiable 1.37s 0.93s
% Output   : Refutation 1.37s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.12/0.13  % Problem  : GRP602-1 : TPTP v8.1.2. Released v2.6.0.
% 0.13/0.14  % Command  : python3 /export/starexec/sandbox2/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox2/tmp/tmp.VDKw7EYmx3 true
% 0.14/0.35  % Computer : n031.cluster.edu
% 0.14/0.35  % Model    : x86_64 x86_64
% 0.14/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.35  % Memory   : 8042.1875MB
% 0.14/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.35  % CPULimit : 300
% 0.14/0.35  % WCLimit  : 300
% 0.14/0.35  % DateTime : Mon Aug 28 23:50:41 EDT 2023
% 0.14/0.35  % CPUTime  : 
% 0.14/0.35  % Running portfolio for 300 s
% 0.14/0.35  % File         : /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.14/0.35  % Number of cores: 8
% 0.14/0.36  % Python version: Python 3.6.8
% 0.21/0.36  % Running in FO mode
% 0.21/0.64  % Total configuration time : 435
% 0.21/0.64  % Estimated wc time : 1092
% 0.21/0.64  % Estimated cpu time (7 cpus) : 156.0
% 0.21/0.71  % /export/starexec/sandbox2/solver/bin/fo/fo6_bce.sh running for 75s
% 0.21/0.73  % /export/starexec/sandbox2/solver/bin/fo/fo3_bce.sh running for 75s
% 0.21/0.75  % /export/starexec/sandbox2/solver/bin/fo/fo1_av.sh running for 75s
% 0.21/0.76  % /export/starexec/sandbox2/solver/bin/fo/fo7.sh running for 63s
% 0.21/0.77  % /export/starexec/sandbox2/solver/bin/fo/fo13.sh running for 50s
% 0.21/0.77  % /export/starexec/sandbox2/solver/bin/fo/fo4.sh running for 50s
% 0.21/0.77  % /export/starexec/sandbox2/solver/bin/fo/fo5.sh running for 50s
% 1.37/0.93  % Solved by fo/fo4.sh.
% 1.37/0.93  % done 39 iterations in 0.147s
% 1.37/0.93  % SZS status Theorem for '/export/starexec/sandbox2/benchmark/theBenchmark.p'
% 1.37/0.93  % SZS output start Refutation
% 1.37/0.93  thf(multiply_type, type, multiply: $i > $i > $i).
% 1.37/0.93  thf(a2_type, type, a2: $i).
% 1.37/0.93  thf(inverse_type, type, inverse: $i > $i).
% 1.37/0.93  thf(double_divide_type, type, double_divide: $i > $i > $i).
% 1.37/0.93  thf(b2_type, type, b2: $i).
% 1.37/0.93  thf(prove_these_axioms_2, conjecture,
% 1.37/0.93    (( multiply @ ( multiply @ ( inverse @ b2 ) @ b2 ) @ a2 ) = ( a2 ))).
% 1.37/0.93  thf(zf_stmt_0, negated_conjecture,
% 1.37/0.93    (( multiply @ ( multiply @ ( inverse @ b2 ) @ b2 ) @ a2 ) != ( a2 )),
% 1.37/0.93    inference('cnf.neg', [status(esa)], [prove_these_axioms_2])).
% 1.37/0.93  thf(zip_derived_cl2, plain,
% 1.37/0.93      (((multiply @ (multiply @ (inverse @ b2) @ b2) @ a2) != (a2))),
% 1.37/0.93      inference('cnf', [status(esa)], [zf_stmt_0])).
% 1.37/0.93  thf(single_axiom, axiom,
% 1.37/0.93    (( inverse @
% 1.37/0.93       ( double_divide @
% 1.37/0.93         ( inverse @
% 1.37/0.93           ( double_divide @
% 1.37/0.93             A @ 
% 1.37/0.93             ( inverse @ ( double_divide @ B @ ( double_divide @ A @ C ) ) ) ) ) @ 
% 1.37/0.93         C ) ) =
% 1.37/0.93     ( B ))).
% 1.37/0.93  thf(zip_derived_cl0, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((inverse @ 
% 1.37/0.93           (double_divide @ 
% 1.37/0.93            (inverse @ 
% 1.37/0.93             (double_divide @ X1 @ 
% 1.37/0.93              (inverse @ (double_divide @ X0 @ (double_divide @ X1 @ X2))))) @ 
% 1.37/0.93            X2))
% 1.37/0.93           = (X0))),
% 1.37/0.93      inference('cnf', [status(esa)], [single_axiom])).
% 1.37/0.93  thf(multiply, axiom,
% 1.37/0.93    (( multiply @ A @ B ) = ( inverse @ ( double_divide @ B @ A ) ))).
% 1.37/0.93  thf(zip_derived_cl1, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ X1 @ X0) = (inverse @ (double_divide @ X0 @ X1)))),
% 1.37/0.93      inference('cnf', [status(esa)], [multiply])).
% 1.37/0.93  thf(zip_derived_cl1, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ X1 @ X0) = (inverse @ (double_divide @ X0 @ X1)))),
% 1.37/0.93      inference('cnf', [status(esa)], [multiply])).
% 1.37/0.93  thf(zip_derived_cl1, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ X1 @ X0) = (inverse @ (double_divide @ X0 @ X1)))),
% 1.37/0.93      inference('cnf', [status(esa)], [multiply])).
% 1.37/0.93  thf(zip_derived_cl3, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X2 @ 
% 1.37/0.93           (multiply @ (multiply @ (double_divide @ X1 @ X2) @ X0) @ X1))
% 1.37/0.93           = (X0))),
% 1.37/0.93      inference('demod', [status(thm)],
% 1.37/0.93                [zip_derived_cl0, zip_derived_cl1, zip_derived_cl1, 
% 1.37/0.93                 zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl3, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X2 @ 
% 1.37/0.93           (multiply @ (multiply @ (double_divide @ X1 @ X2) @ X0) @ X1))
% 1.37/0.93           = (X0))),
% 1.37/0.93      inference('demod', [status(thm)],
% 1.37/0.93                [zip_derived_cl0, zip_derived_cl1, zip_derived_cl1, 
% 1.37/0.93                 zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl4, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 1.37/0.93         ((multiply @ X2 @ (multiply @ X0 @ X3))
% 1.37/0.93           = (multiply @ 
% 1.37/0.93              (multiply @ (double_divide @ X1 @ (double_divide @ X3 @ X2)) @ X0) @ 
% 1.37/0.93              X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl3, zip_derived_cl3])).
% 1.37/0.93  thf(zip_derived_cl3, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X2 @ 
% 1.37/0.93           (multiply @ (multiply @ (double_divide @ X1 @ X2) @ X0) @ X1))
% 1.37/0.93           = (X0))),
% 1.37/0.93      inference('demod', [status(thm)],
% 1.37/0.93                [zip_derived_cl0, zip_derived_cl1, zip_derived_cl1, 
% 1.37/0.93                 zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl6, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (double_divide @ X0 @ X2) @ 
% 1.37/0.93           (multiply @ X2 @ (multiply @ X1 @ X0))) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl4, zip_derived_cl3])).
% 1.37/0.93  thf(zip_derived_cl6, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (double_divide @ X0 @ X2) @ 
% 1.37/0.93           (multiply @ X2 @ (multiply @ X1 @ X0))) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl4, zip_derived_cl3])).
% 1.37/0.93  thf(zip_derived_cl6, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (double_divide @ X0 @ X2) @ 
% 1.37/0.93           (multiply @ X2 @ (multiply @ X1 @ X0))) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl4, zip_derived_cl3])).
% 1.37/0.93  thf(zip_derived_cl10, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ 
% 1.37/0.93           (double_divide @ (multiply @ X0 @ X2) @ (double_divide @ X2 @ X1)) @ 
% 1.37/0.93           X0) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl6, zip_derived_cl6])).
% 1.37/0.93  thf(zip_derived_cl6, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (double_divide @ X0 @ X2) @ 
% 1.37/0.93           (multiply @ X2 @ (multiply @ X1 @ X0))) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl4, zip_derived_cl3])).
% 1.37/0.93  thf(zip_derived_cl19, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 1.37/0.93         ((multiply @ (double_divide @ X2 @ X3) @ (multiply @ X3 @ X0))
% 1.37/0.93           = (double_divide @ (multiply @ X2 @ X1) @ (double_divide @ X1 @ X0)))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl10, zip_derived_cl6])).
% 1.37/0.93  thf(zip_derived_cl6, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (double_divide @ X0 @ X2) @ 
% 1.37/0.93           (multiply @ X2 @ (multiply @ X1 @ X0))) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl4, zip_derived_cl3])).
% 1.37/0.93  thf(zip_derived_cl46, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((double_divide @ (multiply @ X0 @ X2) @ 
% 1.37/0.93           (double_divide @ X2 @ (multiply @ X1 @ X0))) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl19, zip_derived_cl6])).
% 1.37/0.93  thf(zip_derived_cl1, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ X1 @ X0) = (inverse @ (double_divide @ X0 @ X1)))),
% 1.37/0.93      inference('cnf', [status(esa)], [multiply])).
% 1.37/0.93  thf(zip_derived_cl210, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (double_divide @ X2 @ (multiply @ X0 @ X1)) @ 
% 1.37/0.93           (multiply @ X1 @ X2)) = (inverse @ X0))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl46, zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl3, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X2 @ 
% 1.37/0.93           (multiply @ (multiply @ (double_divide @ X1 @ X2) @ X0) @ X1))
% 1.37/0.93           = (X0))),
% 1.37/0.93      inference('demod', [status(thm)],
% 1.37/0.93                [zip_derived_cl0, zip_derived_cl1, zip_derived_cl1, 
% 1.37/0.93                 zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl256, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (multiply @ X0 @ X2) @ (multiply @ (inverse @ X0) @ X1))
% 1.37/0.93           = (multiply @ X2 @ X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl210, zip_derived_cl3])).
% 1.37/0.93  thf(zip_derived_cl299, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 1.37/0.93         ((multiply @ X0 @ 
% 1.37/0.93           (multiply @ (inverse @ (double_divide @ X2 @ X3)) @ X1))
% 1.37/0.93           = (multiply @ (multiply @ X3 @ (multiply @ X0 @ X2)) @ X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl6, zip_derived_cl256])).
% 1.37/0.93  thf(zip_derived_cl1, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ X1 @ X0) = (inverse @ (double_divide @ X0 @ X1)))),
% 1.37/0.93      inference('cnf', [status(esa)], [multiply])).
% 1.37/0.93  thf(zip_derived_cl307, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 1.37/0.93         ((multiply @ X0 @ (multiply @ (multiply @ X3 @ X2) @ X1))
% 1.37/0.93           = (multiply @ (multiply @ X3 @ (multiply @ X0 @ X2)) @ X1))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl299, zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl256, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (multiply @ X0 @ X2) @ (multiply @ (inverse @ X0) @ X1))
% 1.37/0.93           = (multiply @ X2 @ X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl210, zip_derived_cl3])).
% 1.37/0.93  thf(zip_derived_cl368, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 1.37/0.93         ((multiply @ X3 @ 
% 1.37/0.93           (multiply @ (multiply @ X1 @ X2) @ (multiply @ (inverse @ X1) @ X0)))
% 1.37/0.93           = (multiply @ (multiply @ X3 @ X2) @ X0))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl307, zip_derived_cl256])).
% 1.37/0.93  thf(zip_derived_cl256, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (multiply @ X0 @ X2) @ (multiply @ (inverse @ X0) @ X1))
% 1.37/0.93           = (multiply @ X2 @ X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl210, zip_derived_cl3])).
% 1.37/0.93  thf(zip_derived_cl409, plain,
% 1.37/0.93      (![X0 : $i, X2 : $i, X3 : $i]:
% 1.37/0.93         ((multiply @ X3 @ (multiply @ X2 @ X0))
% 1.37/0.93           = (multiply @ (multiply @ X3 @ X2) @ X0))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl368, zip_derived_cl256])).
% 1.37/0.93  thf(zip_derived_cl410, plain,
% 1.37/0.93      (((multiply @ (inverse @ b2) @ (multiply @ b2 @ a2)) != (a2))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl2, zip_derived_cl409])).
% 1.37/0.93  thf(zip_derived_cl6, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (double_divide @ X0 @ X2) @ 
% 1.37/0.93           (multiply @ X2 @ (multiply @ X1 @ X0))) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl4, zip_derived_cl3])).
% 1.37/0.93  thf(zip_derived_cl210, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ (double_divide @ X2 @ (multiply @ X0 @ X1)) @ 
% 1.37/0.93           (multiply @ X1 @ X2)) = (inverse @ X0))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl46, zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl3, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X2 @ 
% 1.37/0.93           (multiply @ (multiply @ (double_divide @ X1 @ X2) @ X0) @ X1))
% 1.37/0.93           = (X0))),
% 1.37/0.93      inference('demod', [status(thm)],
% 1.37/0.93                [zip_derived_cl0, zip_derived_cl1, zip_derived_cl1, 
% 1.37/0.93                 zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl409, plain,
% 1.37/0.93      (![X0 : $i, X2 : $i, X3 : $i]:
% 1.37/0.93         ((multiply @ X3 @ (multiply @ X2 @ X0))
% 1.37/0.93           = (multiply @ (multiply @ X3 @ X2) @ X0))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl368, zip_derived_cl256])).
% 1.37/0.93  thf(zip_derived_cl411, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X2 @ 
% 1.37/0.93           (multiply @ (double_divide @ X1 @ X2) @ (multiply @ X0 @ X1)))
% 1.37/0.93           = (X0))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl3, zip_derived_cl409])).
% 1.37/0.93  thf(zip_derived_cl477, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ (multiply @ X0 @ X1) @ (inverse @ X0)) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl210, zip_derived_cl411])).
% 1.37/0.93  thf(zip_derived_cl525, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X0 @ (inverse @ (double_divide @ X1 @ X2)))
% 1.37/0.93           = (multiply @ X2 @ (multiply @ X0 @ X1)))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl6, zip_derived_cl477])).
% 1.37/0.93  thf(zip_derived_cl1, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ X1 @ X0) = (inverse @ (double_divide @ X0 @ X1)))),
% 1.37/0.93      inference('cnf', [status(esa)], [multiply])).
% 1.37/0.93  thf(zip_derived_cl536, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X0 @ (multiply @ X2 @ X1))
% 1.37/0.93           = (multiply @ X2 @ (multiply @ X0 @ X1)))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl525, zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl543, plain,
% 1.37/0.93      (((multiply @ b2 @ (multiply @ (inverse @ b2) @ a2)) != (a2))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl410, zip_derived_cl536])).
% 1.37/0.93  thf(zip_derived_cl536, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X0 @ (multiply @ X2 @ X1))
% 1.37/0.93           = (multiply @ X2 @ (multiply @ X0 @ X1)))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl525, zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl477, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ (multiply @ X0 @ X1) @ (inverse @ X0)) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl210, zip_derived_cl411])).
% 1.37/0.93  thf(zip_derived_cl409, plain,
% 1.37/0.93      (![X0 : $i, X2 : $i, X3 : $i]:
% 1.37/0.93         ((multiply @ X3 @ (multiply @ X2 @ X0))
% 1.37/0.93           = (multiply @ (multiply @ X3 @ X2) @ X0))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl368, zip_derived_cl256])).
% 1.37/0.93  thf(zip_derived_cl520, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ X1 @ (multiply @ X0 @ (inverse @ X1))) = (X0))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl477, zip_derived_cl409])).
% 1.37/0.93  thf(zip_derived_cl867, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ X1 @ (multiply @ X0 @ (inverse @ X0))) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl536, zip_derived_cl520])).
% 1.37/0.93  thf(zip_derived_cl536, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X0 @ (multiply @ X2 @ X1))
% 1.37/0.93           = (multiply @ X2 @ (multiply @ X0 @ X1)))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl525, zip_derived_cl1])).
% 1.37/0.93  thf(zip_derived_cl894, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i, X2 : $i]:
% 1.37/0.93         ((multiply @ X0 @ (multiply @ X2 @ (multiply @ X1 @ (inverse @ X1))))
% 1.37/0.93           = (multiply @ X2 @ X0))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl867, zip_derived_cl536])).
% 1.37/0.93  thf(zip_derived_cl867, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ X1 @ (multiply @ X0 @ (inverse @ X0))) = (X1))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl536, zip_derived_cl520])).
% 1.37/0.93  thf(zip_derived_cl932, plain,
% 1.37/0.93      (![X0 : $i, X2 : $i]: ((multiply @ X0 @ X2) = (multiply @ X2 @ X0))),
% 1.37/0.93      inference('demod', [status(thm)], [zip_derived_cl894, zip_derived_cl867])).
% 1.37/0.93  thf(zip_derived_cl520, plain,
% 1.37/0.93      (![X0 : $i, X1 : $i]:
% 1.37/0.93         ((multiply @ X1 @ (multiply @ X0 @ (inverse @ X1))) = (X0))),
% 1.37/0.93      inference('sup+', [status(thm)], [zip_derived_cl477, zip_derived_cl409])).
% 1.37/0.93  thf(zip_derived_cl941, plain, (((a2) != (a2))),
% 1.37/0.93      inference('demod', [status(thm)],
% 1.37/0.93                [zip_derived_cl543, zip_derived_cl932, zip_derived_cl520])).
% 1.37/0.93  thf(zip_derived_cl942, plain, ($false),
% 1.37/0.93      inference('simplify', [status(thm)], [zip_derived_cl941])).
% 1.37/0.93  
% 1.37/0.93  % SZS output end Refutation
% 1.37/0.93  
% 1.37/0.93  
% 1.37/0.93  % Terminating...
% 1.54/0.96  % Runner terminated.
% 1.54/0.97  % Zipperpin 1.5 exiting
%------------------------------------------------------------------------------