TSTP Solution File: GRP498-1 by Zipperpin---2.1.9999

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Zipperpin---2.1.9999
% Problem  : GRP498-1 : 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.MYExDTvIpF true

% Computer : n004.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 01:51:53 EDT 2023

% Result   : Unsatisfiable 0.56s 1.00s
% Output   : Refutation 0.56s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.12  % Problem  : GRP498-1 : TPTP v8.1.2. Released v2.6.0.
% 0.06/0.13  % Command  : python3 /export/starexec/sandbox2/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox2/tmp/tmp.MYExDTvIpF true
% 0.13/0.34  % Computer : n004.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 : Mon Aug 28 21:42:22 EDT 2023
% 0.13/0.34  % CPUTime  : 
% 0.13/0.34  % Running portfolio for 300 s
% 0.13/0.34  % File         : /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.13/0.34  % Number of cores: 8
% 0.13/0.35  % Python version: Python 3.6.8
% 0.13/0.35  % Running in FO mode
% 0.43/0.66  % Total configuration time : 435
% 0.43/0.66  % Estimated wc time : 1092
% 0.43/0.66  % Estimated cpu time (7 cpus) : 156.0
% 0.43/0.72  % /export/starexec/sandbox2/solver/bin/fo/fo6_bce.sh running for 75s
% 0.43/0.73  % /export/starexec/sandbox2/solver/bin/fo/fo3_bce.sh running for 75s
% 0.43/0.73  % /export/starexec/sandbox2/solver/bin/fo/fo1_av.sh running for 75s
% 0.55/0.74  % /export/starexec/sandbox2/solver/bin/fo/fo7.sh running for 63s
% 0.55/0.76  % /export/starexec/sandbox2/solver/bin/fo/fo13.sh running for 50s
% 0.55/0.76  % /export/starexec/sandbox2/solver/bin/fo/fo5.sh running for 50s
% 0.55/0.76  % /export/starexec/sandbox2/solver/bin/fo/fo4.sh running for 50s
% 0.56/1.00  % Solved by fo/fo5.sh.
% 0.56/1.00  % done 398 iterations in 0.213s
% 0.56/1.00  % SZS status Theorem for '/export/starexec/sandbox2/benchmark/theBenchmark.p'
% 0.56/1.00  % SZS output start Refutation
% 0.56/1.00  thf(c3_type, type, c3: $i).
% 0.56/1.00  thf(multiply_type, type, multiply: $i > $i > $i).
% 0.56/1.00  thf(b3_type, type, b3: $i).
% 0.56/1.00  thf(a3_type, type, a3: $i).
% 0.56/1.00  thf(identity_type, type, identity: $i).
% 0.56/1.00  thf(double_divide_type, type, double_divide: $i > $i > $i).
% 0.56/1.00  thf(inverse_type, type, inverse: $i > $i).
% 0.56/1.00  thf(prove_these_axioms_3, conjecture,
% 0.56/1.00    (( multiply @ ( multiply @ a3 @ b3 ) @ c3 ) =
% 0.56/1.00     ( multiply @ a3 @ ( multiply @ b3 @ c3 ) ))).
% 0.56/1.00  thf(zf_stmt_0, negated_conjecture,
% 0.56/1.00    (( multiply @ ( multiply @ a3 @ b3 ) @ c3 ) !=
% 0.56/1.00     ( multiply @ a3 @ ( multiply @ b3 @ c3 ) )),
% 0.56/1.00    inference('cnf.neg', [status(esa)], [prove_these_axioms_3])).
% 0.56/1.00  thf(zip_derived_cl4, plain,
% 0.56/1.00      (((multiply @ (multiply @ a3 @ b3) @ c3)
% 0.56/1.00         != (multiply @ a3 @ (multiply @ b3 @ c3)))),
% 0.56/1.00      inference('cnf', [status(esa)], [zf_stmt_0])).
% 0.56/1.00  thf(inverse, axiom, (( inverse @ A ) = ( double_divide @ A @ identity ))).
% 0.56/1.00  thf(zip_derived_cl2, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ X0) = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [inverse])).
% 0.56/1.00  thf(multiply, axiom,
% 0.56/1.00    (( multiply @ A @ B ) =
% 0.56/1.00     ( double_divide @ ( double_divide @ B @ A ) @ identity ))).
% 0.56/1.00  thf(zip_derived_cl1, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X1 @ X0)
% 0.56/1.00           = (double_divide @ (double_divide @ X0 @ X1) @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [multiply])).
% 0.56/1.00  thf(zip_derived_cl7, plain,
% 0.56/1.00      (![X0 : $i]:
% 0.56/1.00         ((multiply @ identity @ X0)
% 0.56/1.00           = (double_divide @ (inverse @ X0) @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl2, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ X0) = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [inverse])).
% 0.56/1.00  thf(zip_derived_cl10, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ identity @ X0) = (inverse @ (inverse @ X0)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl7, zip_derived_cl2])).
% 0.56/1.00  thf(identity, axiom,
% 0.56/1.00    (( identity ) = ( double_divide @ A @ ( inverse @ A ) ))).
% 0.56/1.00  thf(zip_derived_cl3, plain,
% 0.56/1.00      (![X0 : $i]: ((identity) = (double_divide @ X0 @ (inverse @ X0)))),
% 0.56/1.00      inference('cnf', [status(esa)], [identity])).
% 0.56/1.00  thf(zip_derived_cl2, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ X0) = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [inverse])).
% 0.56/1.00  thf(single_axiom, axiom,
% 0.56/1.00    (( double_divide @
% 0.56/1.00       ( double_divide @
% 0.56/1.00         identity @ ( double_divide @ A @ ( double_divide @ B @ identity ) ) ) @ 
% 0.56/1.00       ( double_divide @
% 0.56/1.00         ( double_divide @ B @ ( double_divide @ C @ A ) ) @ identity ) ) =
% 0.56/1.00     ( C ))).
% 0.56/1.00  thf(zip_derived_cl0, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((double_divide @ 
% 0.56/1.00           (double_divide @ identity @ 
% 0.56/1.00            (double_divide @ X1 @ (double_divide @ X2 @ identity))) @ 
% 0.56/1.00           (double_divide @ (double_divide @ X2 @ (double_divide @ X0 @ X1)) @ 
% 0.56/1.00            identity))
% 0.56/1.00           = (X0))),
% 0.56/1.00      inference('cnf', [status(esa)], [single_axiom])).
% 0.56/1.00  thf(zip_derived_cl2, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ X0) = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [inverse])).
% 0.56/1.00  thf(zip_derived_cl1, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X1 @ X0)
% 0.56/1.00           = (double_divide @ (double_divide @ X0 @ X1) @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [multiply])).
% 0.56/1.00  thf(zip_derived_cl13, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((double_divide @ 
% 0.56/1.00           (double_divide @ identity @ (double_divide @ X1 @ (inverse @ X2))) @ 
% 0.56/1.00           (multiply @ (double_divide @ X0 @ X1) @ X2)) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl0, zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl16, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ 
% 0.56/1.00           (double_divide @ identity @ 
% 0.56/1.00            (double_divide @ identity @ (inverse @ X1))) @ 
% 0.56/1.00           (multiply @ (inverse @ X0) @ X1)) = (X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl2, zip_derived_cl13])).
% 0.56/1.00  thf(zip_derived_cl242, plain,
% 0.56/1.00      (![X0 : $i]:
% 0.56/1.00         ((double_divide @ (double_divide @ identity @ identity) @ 
% 0.56/1.00           (multiply @ (inverse @ X0) @ identity)) = (X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl3, zip_derived_cl16])).
% 0.56/1.00  thf(zip_derived_cl2, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ X0) = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [inverse])).
% 0.56/1.00  thf(zip_derived_cl1, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X1 @ X0)
% 0.56/1.00           = (double_divide @ (double_divide @ X0 @ X1) @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [multiply])).
% 0.56/1.00  thf(zip_derived_cl6, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X0 @ X1) = (inverse @ (double_divide @ X1 @ X0)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl3, plain,
% 0.56/1.00      (![X0 : $i]: ((identity) = (double_divide @ X0 @ (inverse @ X0)))),
% 0.56/1.00      inference('cnf', [status(esa)], [identity])).
% 0.56/1.00  thf(zip_derived_cl23, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((identity)
% 0.56/1.00           = (double_divide @ (double_divide @ X0 @ X1) @ (multiply @ X1 @ X0)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl6, zip_derived_cl3])).
% 0.56/1.00  thf(zip_derived_cl13, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((double_divide @ 
% 0.56/1.00           (double_divide @ identity @ (double_divide @ X1 @ (inverse @ X2))) @ 
% 0.56/1.00           (multiply @ (double_divide @ X0 @ X1) @ X2)) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl0, zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl169, plain, (((identity) = (inverse @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl23, zip_derived_cl13])).
% 0.56/1.00  thf(zip_derived_cl3, plain,
% 0.56/1.00      (![X0 : $i]: ((identity) = (double_divide @ X0 @ (inverse @ X0)))),
% 0.56/1.00      inference('cnf', [status(esa)], [identity])).
% 0.56/1.00  thf(zip_derived_cl204, plain,
% 0.56/1.00      (((identity) = (double_divide @ identity @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl169, zip_derived_cl3])).
% 0.56/1.00  thf(zip_derived_cl248, plain,
% 0.56/1.00      (![X0 : $i]:
% 0.56/1.00         ((double_divide @ identity @ (multiply @ (inverse @ X0) @ identity))
% 0.56/1.00           = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl242, zip_derived_cl204])).
% 0.56/1.00  thf(zip_derived_cl169, plain, (((identity) = (inverse @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl23, zip_derived_cl13])).
% 0.56/1.00  thf(zip_derived_cl3, plain,
% 0.56/1.00      (![X0 : $i]: ((identity) = (double_divide @ X0 @ (inverse @ X0)))),
% 0.56/1.00      inference('cnf', [status(esa)], [identity])).
% 0.56/1.00  thf(zip_derived_cl13, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((double_divide @ 
% 0.56/1.00           (double_divide @ identity @ (double_divide @ X1 @ (inverse @ X2))) @ 
% 0.56/1.00           (multiply @ (double_divide @ X0 @ X1) @ X2)) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl0, zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl17, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ 
% 0.56/1.00           (double_divide @ identity @ 
% 0.56/1.00            (double_divide @ (inverse @ X0) @ (inverse @ X1))) @ 
% 0.56/1.00           (multiply @ identity @ X1)) = (X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl3, zip_derived_cl13])).
% 0.56/1.00  thf(zip_derived_cl10, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ identity @ X0) = (inverse @ (inverse @ X0)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl7, zip_derived_cl2])).
% 0.56/1.00  thf(zip_derived_cl329, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ 
% 0.56/1.00           (double_divide @ identity @ 
% 0.56/1.00            (double_divide @ (inverse @ X0) @ (inverse @ X1))) @ 
% 0.56/1.00           (inverse @ (inverse @ X1))) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl17, zip_derived_cl10])).
% 0.56/1.00  thf(zip_derived_cl339, plain,
% 0.56/1.00      (![X0 : $i]:
% 0.56/1.00         ((double_divide @ 
% 0.56/1.00           (double_divide @ identity @ 
% 0.56/1.00            (double_divide @ (inverse @ X0) @ (inverse @ identity))) @ 
% 0.56/1.00           (inverse @ identity)) = (X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl169, zip_derived_cl329])).
% 0.56/1.00  thf(zip_derived_cl169, plain, (((identity) = (inverse @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl23, zip_derived_cl13])).
% 0.56/1.00  thf(zip_derived_cl2, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ X0) = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [inverse])).
% 0.56/1.00  thf(zip_derived_cl169, plain, (((identity) = (inverse @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl23, zip_derived_cl13])).
% 0.56/1.00  thf(zip_derived_cl1, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X1 @ X0)
% 0.56/1.00           = (double_divide @ (double_divide @ X0 @ X1) @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [multiply])).
% 0.56/1.00  thf(zip_derived_cl346, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ (inverse @ (inverse @ X0)) @ identity) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl339, zip_derived_cl169, zip_derived_cl2, 
% 0.56/1.00                 zip_derived_cl169, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl248, plain,
% 0.56/1.00      (![X0 : $i]:
% 0.56/1.00         ((double_divide @ identity @ (multiply @ (inverse @ X0) @ identity))
% 0.56/1.00           = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl242, zip_derived_cl204])).
% 0.56/1.00  thf(zip_derived_cl6, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X0 @ X1) = (inverse @ (double_divide @ X1 @ X0)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl275, plain,
% 0.56/1.00      (![X0 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ (inverse @ X0) @ identity) @ identity)
% 0.56/1.00           = (inverse @ X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl248, zip_derived_cl6])).
% 0.56/1.00  thf(zip_derived_cl357, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ X0 @ identity) = (inverse @ (inverse @ X0)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl346, zip_derived_cl275])).
% 0.56/1.00  thf(zip_derived_cl346, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ (inverse @ (inverse @ X0)) @ identity) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl339, zip_derived_cl169, zip_derived_cl2, 
% 0.56/1.00                 zip_derived_cl169, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl248, plain,
% 0.56/1.00      (![X0 : $i]:
% 0.56/1.00         ((double_divide @ identity @ (multiply @ (inverse @ X0) @ identity))
% 0.56/1.00           = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl242, zip_derived_cl204])).
% 0.56/1.00  thf(zip_derived_cl356, plain,
% 0.56/1.00      (![X0 : $i]: ((double_divide @ identity @ X0) = (inverse @ X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl346, zip_derived_cl248])).
% 0.56/1.00  thf(zip_derived_cl378, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ (inverse @ (inverse @ (inverse @ X0)))) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl248, zip_derived_cl357, zip_derived_cl356])).
% 0.56/1.00  thf(zip_derived_cl3, plain,
% 0.56/1.00      (![X0 : $i]: ((identity) = (double_divide @ X0 @ (inverse @ X0)))),
% 0.56/1.00      inference('cnf', [status(esa)], [identity])).
% 0.56/1.00  thf(zip_derived_cl6, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X0 @ X1) = (inverse @ (double_divide @ X1 @ X0)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl26, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ (inverse @ X0) @ X0) = (inverse @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl3, zip_derived_cl6])).
% 0.56/1.00  thf(zip_derived_cl169, plain, (((identity) = (inverse @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl23, zip_derived_cl13])).
% 0.56/1.00  thf(zip_derived_cl202, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ (inverse @ X0) @ X0) = (identity))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl26, zip_derived_cl169])).
% 0.56/1.00  thf(zip_derived_cl391, plain,
% 0.56/1.00      (![X0 : $i]:
% 0.56/1.00         ((multiply @ X0 @ (inverse @ (inverse @ (inverse @ X0)))) = (identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl378, zip_derived_cl202])).
% 0.56/1.00  thf(zip_derived_cl378, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ (inverse @ (inverse @ (inverse @ X0)))) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl248, zip_derived_cl357, zip_derived_cl356])).
% 0.56/1.00  thf(zip_derived_cl346, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ (inverse @ (inverse @ X0)) @ identity) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl339, zip_derived_cl169, zip_derived_cl2, 
% 0.56/1.00                 zip_derived_cl169, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl13, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((double_divide @ 
% 0.56/1.00           (double_divide @ identity @ (double_divide @ X1 @ (inverse @ X2))) @ 
% 0.56/1.00           (multiply @ (double_divide @ X0 @ X1) @ X2)) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl0, zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl1, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X1 @ X0)
% 0.56/1.00           = (double_divide @ (double_divide @ X0 @ X1) @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [multiply])).
% 0.56/1.00  thf(zip_derived_cl14, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ (double_divide @ X0 @ X2) @ X1) @ 
% 0.56/1.00           (double_divide @ identity @ (double_divide @ X2 @ (inverse @ X1))))
% 0.56/1.00           = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl13, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl2, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ X0) = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [inverse])).
% 0.56/1.00  thf(zip_derived_cl22, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ (double_divide @ X0 @ X2) @ X1) @ 
% 0.56/1.00           (double_divide @ identity @ (double_divide @ X2 @ (inverse @ X1))))
% 0.56/1.00           = (inverse @ X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl14, zip_derived_cl2])).
% 0.56/1.00  thf(zip_derived_cl356, plain,
% 0.56/1.00      (![X0 : $i]: ((double_divide @ identity @ X0) = (inverse @ X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl346, zip_derived_cl248])).
% 0.56/1.00  thf(zip_derived_cl6, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X0 @ X1) = (inverse @ (double_divide @ X1 @ X0)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl517, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ (double_divide @ X0 @ X2) @ X1) @ 
% 0.56/1.00           (multiply @ (inverse @ X1) @ X2)) = (inverse @ X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl22, zip_derived_cl356, zip_derived_cl6])).
% 0.56/1.00  thf(zip_derived_cl523, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ 
% 0.56/1.00           (multiply @ (double_divide @ X1 @ identity) @ (inverse @ X0)) @ X0)
% 0.56/1.00           = (inverse @ X1))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl346, zip_derived_cl517])).
% 0.56/1.00  thf(zip_derived_cl2, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ X0) = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [inverse])).
% 0.56/1.00  thf(zip_derived_cl541, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ (inverse @ X1) @ (inverse @ X0)) @ X0)
% 0.56/1.00           = (inverse @ X1))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl523, zip_derived_cl2])).
% 0.56/1.00  thf(zip_derived_cl600, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ X0 @ (inverse @ X1)) @ X1)
% 0.56/1.00           = (inverse @ (inverse @ (inverse @ (inverse @ X0)))))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl378, zip_derived_cl541])).
% 0.56/1.00  thf(zip_derived_cl378, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ (inverse @ (inverse @ (inverse @ X0)))) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl248, zip_derived_cl357, zip_derived_cl356])).
% 0.56/1.00  thf(zip_derived_cl604, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ X0 @ (inverse @ X1)) @ X1) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl600, zip_derived_cl378])).
% 0.56/1.00  thf(zip_derived_cl612, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ identity @ (inverse @ (inverse @ X0))) = (X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl391, zip_derived_cl604])).
% 0.56/1.00  thf(zip_derived_cl604, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ X0 @ (inverse @ X1)) @ X1) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl600, zip_derived_cl378])).
% 0.56/1.00  thf(zip_derived_cl627, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ X0 @ (inverse @ X0)) = (identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl612, zip_derived_cl604])).
% 0.56/1.00  thf(zip_derived_cl604, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ X0 @ (inverse @ X1)) @ X1) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl600, zip_derived_cl378])).
% 0.56/1.00  thf(zip_derived_cl640, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ identity @ X0) = (X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl627, zip_derived_cl604])).
% 0.56/1.00  thf(zip_derived_cl650, plain,
% 0.56/1.00      (![X0 : $i]: ((X0) = (inverse @ (inverse @ X0)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl10, zip_derived_cl640])).
% 0.56/1.00  thf(zip_derived_cl604, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ X0 @ (inverse @ X1)) @ X1) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl600, zip_derived_cl378])).
% 0.56/1.00  thf(zip_derived_cl678, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ X1 @ X0) @ (inverse @ X0)) = (X1))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl650, zip_derived_cl604])).
% 0.56/1.00  thf(zip_derived_cl6, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X0 @ X1) = (inverse @ (double_divide @ X1 @ X0)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl346, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ (inverse @ (inverse @ X0)) @ identity) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl339, zip_derived_cl169, zip_derived_cl2, 
% 0.56/1.00                 zip_derived_cl169, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl358, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (inverse @ (multiply @ X1 @ X0)) @ identity)
% 0.56/1.00           = (double_divide @ X0 @ X1))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl6, zip_derived_cl346])).
% 0.56/1.00  thf(zip_derived_cl717, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (inverse @ X0) @ identity)
% 0.56/1.00           = (double_divide @ (inverse @ X1) @ (multiply @ X0 @ X1)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl678, zip_derived_cl358])).
% 0.56/1.00  thf(zip_derived_cl357, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ X0 @ identity) = (inverse @ (inverse @ X0)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl346, zip_derived_cl275])).
% 0.56/1.00  thf(zip_derived_cl650, plain,
% 0.56/1.00      (![X0 : $i]: ((X0) = (inverse @ (inverse @ X0)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl10, zip_derived_cl640])).
% 0.56/1.00  thf(zip_derived_cl667, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ X0 @ identity) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl357, zip_derived_cl650])).
% 0.56/1.00  thf(zip_derived_cl738, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((inverse @ X0)
% 0.56/1.00           = (double_divide @ (inverse @ X1) @ (multiply @ X0 @ X1)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl717, zip_derived_cl667])).
% 0.56/1.00  thf(zip_derived_cl3, plain,
% 0.56/1.00      (![X0 : $i]: ((identity) = (double_divide @ X0 @ (inverse @ X0)))),
% 0.56/1.00      inference('cnf', [status(esa)], [identity])).
% 0.56/1.00  thf(zip_derived_cl13, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((double_divide @ 
% 0.56/1.00           (double_divide @ identity @ (double_divide @ X1 @ (inverse @ X2))) @ 
% 0.56/1.00           (multiply @ (double_divide @ X0 @ X1) @ X2)) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl0, zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl20, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ (double_divide @ identity @ identity) @ 
% 0.56/1.00           (multiply @ (double_divide @ X0 @ X1) @ X1)) = (X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl3, zip_derived_cl13])).
% 0.56/1.00  thf(zip_derived_cl2, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ X0) = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [inverse])).
% 0.56/1.00  thf(zip_derived_cl21, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ (inverse @ identity) @ 
% 0.56/1.00           (multiply @ (double_divide @ X0 @ X1) @ X1)) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl20, zip_derived_cl2])).
% 0.56/1.00  thf(zip_derived_cl169, plain, (((identity) = (inverse @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl23, zip_derived_cl13])).
% 0.56/1.00  thf(zip_derived_cl356, plain,
% 0.56/1.00      (![X0 : $i]: ((double_divide @ identity @ X0) = (inverse @ X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl346, zip_derived_cl248])).
% 0.56/1.00  thf(zip_derived_cl420, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((inverse @ (multiply @ (double_divide @ X0 @ X1) @ X1)) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl21, zip_derived_cl169, zip_derived_cl356])).
% 0.56/1.00  thf(zip_derived_cl378, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ (inverse @ (inverse @ (inverse @ X0)))) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl248, zip_derived_cl357, zip_derived_cl356])).
% 0.56/1.00  thf(zip_derived_cl425, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((inverse @ (inverse @ (inverse @ X0)))
% 0.56/1.00           = (multiply @ (double_divide @ X0 @ X1) @ X1))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl420, zip_derived_cl378])).
% 0.56/1.00  thf(zip_derived_cl650, plain,
% 0.56/1.00      (![X0 : $i]: ((X0) = (inverse @ (inverse @ X0)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl10, zip_derived_cl640])).
% 0.56/1.00  thf(zip_derived_cl671, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((inverse @ X0) = (multiply @ (double_divide @ X0 @ X1) @ X1))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl425, zip_derived_cl650])).
% 0.56/1.00  thf(zip_derived_cl1, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X1 @ X0)
% 0.56/1.00           = (double_divide @ (double_divide @ X0 @ X1) @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [multiply])).
% 0.56/1.00  thf(zip_derived_cl1, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X1 @ X0)
% 0.56/1.00           = (double_divide @ (double_divide @ X0 @ X1) @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [multiply])).
% 0.56/1.00  thf(zip_derived_cl9, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ identity @ (double_divide @ X0 @ X1))
% 0.56/1.00           = (double_divide @ (multiply @ X1 @ X0) @ identity))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl1, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl2, plain,
% 0.56/1.00      (![X0 : $i]: ((inverse @ X0) = (double_divide @ X0 @ identity))),
% 0.56/1.00      inference('cnf', [status(esa)], [inverse])).
% 0.56/1.00  thf(zip_derived_cl11, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ identity @ (double_divide @ X0 @ X1))
% 0.56/1.00           = (inverse @ (multiply @ X1 @ X0)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl9, zip_derived_cl2])).
% 0.56/1.00  thf(zip_derived_cl640, plain,
% 0.56/1.00      (![X0 : $i]: ((multiply @ identity @ X0) = (X0))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl627, zip_derived_cl604])).
% 0.56/1.00  thf(zip_derived_cl651, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ X0 @ X1) = (inverse @ (multiply @ X1 @ X0)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl11, zip_derived_cl640])).
% 0.56/1.00  thf(zip_derived_cl822, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ X1 @ (double_divide @ X0 @ X1))
% 0.56/1.00           = (inverse @ (inverse @ X0)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl671, zip_derived_cl651])).
% 0.56/1.00  thf(zip_derived_cl650, plain,
% 0.56/1.00      (![X0 : $i]: ((X0) = (inverse @ (inverse @ X0)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl10, zip_derived_cl640])).
% 0.56/1.00  thf(zip_derived_cl840, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ X1 @ (double_divide @ X0 @ X1)) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl822, zip_derived_cl650])).
% 0.56/1.00  thf(zip_derived_cl840, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ X1 @ (double_divide @ X0 @ X1)) = (X0))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl822, zip_derived_cl650])).
% 0.56/1.00  thf(zip_derived_cl847, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ (double_divide @ X0 @ X1) @ X0) = (X1))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl840, zip_derived_cl840])).
% 0.56/1.00  thf(zip_derived_cl1402, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((double_divide @ (inverse @ X0) @ (inverse @ X1))
% 0.56/1.00           = (multiply @ X0 @ X1))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl738, zip_derived_cl847])).
% 0.56/1.00  thf(zip_derived_cl517, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ (double_divide @ X0 @ X2) @ X1) @ 
% 0.56/1.00           (multiply @ (inverse @ X1) @ X2)) = (inverse @ X0))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl22, zip_derived_cl356, zip_derived_cl6])).
% 0.56/1.00  thf(zip_derived_cl2040, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ (multiply @ X1 @ X0) @ X2) @ 
% 0.56/1.00           (multiply @ (inverse @ X2) @ (inverse @ X0)))
% 0.56/1.00           = (inverse @ (inverse @ X1)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl1402, zip_derived_cl517])).
% 0.56/1.00  thf(zip_derived_cl671, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((inverse @ X0) = (multiply @ (double_divide @ X0 @ X1) @ X1))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl425, zip_derived_cl650])).
% 0.56/1.00  thf(zip_derived_cl678, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ X1 @ X0) @ (inverse @ X0)) = (X1))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl650, zip_derived_cl604])).
% 0.56/1.00  thf(zip_derived_cl823, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (inverse @ X0) @ (inverse @ X1))
% 0.56/1.00           = (double_divide @ X0 @ X1))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl671, zip_derived_cl678])).
% 0.56/1.00  thf(zip_derived_cl650, plain,
% 0.56/1.00      (![X0 : $i]: ((X0) = (inverse @ (inverse @ X0)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl10, zip_derived_cl640])).
% 0.56/1.00  thf(zip_derived_cl2067, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ (multiply @ X1 @ X0) @ X2) @ 
% 0.56/1.00           (double_divide @ X2 @ X0)) = (X1))),
% 0.56/1.00      inference('demod', [status(thm)],
% 0.56/1.00                [zip_derived_cl2040, zip_derived_cl823, zip_derived_cl650])).
% 0.56/1.00  thf(zip_derived_cl6, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ X0 @ X1) = (inverse @ (double_divide @ X1 @ X0)))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl2, zip_derived_cl1])).
% 0.56/1.00  thf(zip_derived_cl678, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ X1 @ X0) @ (inverse @ X0)) = (X1))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl650, zip_derived_cl604])).
% 0.56/1.00  thf(zip_derived_cl720, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((multiply @ (multiply @ X2 @ (double_divide @ X0 @ X1)) @ 
% 0.56/1.00           (multiply @ X1 @ X0)) = (X2))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl6, zip_derived_cl678])).
% 0.56/1.00  thf(zip_derived_cl2749, plain,
% 0.56/1.00      (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/1.00         ((multiply @ X0 @ (multiply @ X2 @ X1))
% 0.56/1.00           = (multiply @ (multiply @ X0 @ X2) @ X1))),
% 0.56/1.00      inference('sup+', [status(thm)], [zip_derived_cl2067, zip_derived_cl720])).
% 0.56/1.00  thf(zip_derived_cl2852, plain,
% 0.56/1.00      (((multiply @ a3 @ (multiply @ b3 @ c3))
% 0.56/1.00         != (multiply @ a3 @ (multiply @ b3 @ c3)))),
% 0.56/1.00      inference('demod', [status(thm)], [zip_derived_cl4, zip_derived_cl2749])).
% 0.56/1.00  thf(zip_derived_cl2853, plain, ($false),
% 0.56/1.00      inference('simplify', [status(thm)], [zip_derived_cl2852])).
% 0.56/1.00  
% 0.56/1.00  % SZS output end Refutation
% 0.56/1.00  
% 0.56/1.00  
% 0.56/1.00  % Terminating...
% 0.60/1.07  % Runner terminated.
% 0.60/1.07  % Zipperpin 1.5 exiting
%------------------------------------------------------------------------------