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Zipperpin---2.1.9999.UNS-Ref.s

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%------------------------------------------------------------------------------
% File     : Zipperpin---2.1.9999
% Problem  : LCL089-1 : TPTP v9.3.1. Released v1.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.1hwcpknWZl true

% Computer : n010.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 : Mon Sep  7 01:35:10 PM UTC 2026

% Result   : Unsatisfiable 35.41s 5.75s
% Output   : Refutation 35.41s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : LCL089-1 : TPTP v9.3.1. Released v1.0.0.
% 0.00/0.04  % Command  : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.1hwcpknWZl true
% 0.09/0.36  % Computer : n010.cluster.edu
% 0.09/0.36  % Model    : x86_64 x86_64
% 0.09/0.36  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.36  % Memory   : 8046.5625MB
% 0.09/0.36  % OS       : Linux 6.8.0-71-generic
% 0.09/0.36  % CPULimit : 300
% 0.09/0.36  % WCLimit  : 300
% 0.09/0.36  % DateTime : Sat Sep  5 16:47:09 UTC 2026
% 0.09/0.36  % CPUTime  : 
% 0.09/0.36  % Running portfolio for 300 s
% 0.09/0.36  % File         : /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.09/0.37  % Number of cores: 8
% 0.09/0.37  % Python version: Python 3.12.3
% 0.09/0.37  % Running in FO mode
% 0.45/0.66  % Total configuration time : 435
% 0.45/0.66  % Estimated wc time : 1092
% 0.45/0.66  % Estimated cpu time (7 cpus) : 156.0
% 0.47/0.73  % /export/starexec/sandbox/solver/bin/fo/fo6_bce.sh running for 75s
% 0.48/0.80  % /export/starexec/sandbox/solver/bin/fo/fo3_bce.sh running for 75s
% 0.48/0.80  % /export/starexec/sandbox/solver/bin/fo/fo1_av.sh running for 75s
% 0.48/0.80  % /export/starexec/sandbox/solver/bin/fo/fo7.sh running for 63s
% 0.48/0.80  % /export/starexec/sandbox/solver/bin/fo/fo13.sh running for 50s
% 0.48/0.80  % /export/starexec/sandbox/solver/bin/fo/fo5.sh running for 50s
% 0.48/0.80  % /export/starexec/sandbox/solver/bin/fo/fo4.sh running for 50s
% 35.41/5.75  % Solved by fo/fo7.sh.
% 35.41/5.75  % done 1439 iterations in 4.910s
% 35.41/5.75  % SZS status Theorem for '/export/starexec/sandbox/benchmark/theBenchmark.p'
% 35.41/5.75  % SZS output start Refutation
% 35.41/5.75  thf(b_type, type, b: $i).
% 35.41/5.75  thf(is_a_theorem_type, type, is_a_theorem: $i > $o).
% 35.41/5.75  thf(implies_type, type, implies: $i > $i > $i).
% 35.41/5.75  thf(a_type, type, a: $i).
% 35.41/5.75  thf(c_type, type, c: $i).
% 35.41/5.75  thf(prove_ic_4, conjecture,
% 35.41/5.75    (is_a_theorem @
% 35.41/5.75     ( implies @
% 35.41/5.75       ( implies @ a @ b ) @ 
% 35.41/5.75       ( implies @ ( implies @ b @ c ) @ ( implies @ a @ c ) ) ))).
% 35.41/5.75  thf(zf_stmt_0, negated_conjecture,
% 35.41/5.75    (~( is_a_theorem @
% 35.41/5.75        ( implies @
% 35.41/5.75          ( implies @ a @ b ) @ 
% 35.41/5.75          ( implies @ ( implies @ b @ c ) @ ( implies @ a @ c ) ) ) )),
% 35.41/5.75    inference('cnf.neg', [status(esa)], [prove_ic_4])).
% 35.41/5.75  thf(zip_derived_cl2, plain,
% 35.41/5.75      (~ (is_a_theorem @ 
% 35.41/5.75          (implies @ (implies @ a @ b) @ 
% 35.41/5.75           (implies @ (implies @ b @ c) @ (implies @ a @ c))))),
% 35.41/5.75      inference('cnf', [status(esa)], [zf_stmt_0])).
% 35.41/5.75  thf(ic_JLukasiewicz_4, axiom,
% 35.41/5.75    (is_a_theorem @
% 35.41/5.75     ( implies @
% 35.41/5.75       ( implies @ ( implies @ P @ Q ) @ ( implies @ R @ S ) ) @ 
% 35.41/5.75       ( implies @ T @ ( implies @ ( implies @ S @ P ) @ ( implies @ R @ P ) ) ) ))).
% 35.41/5.75  thf(zip_derived_cl1, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ (implies @ X0 @ X1) @ (implies @ X2 @ X3)) @ 
% 35.41/5.75            (implies @ X4 @ 
% 35.41/5.75             (implies @ (implies @ X3 @ X0) @ (implies @ X2 @ X0)))))),
% 35.41/5.75      inference('cnf', [status(esa)], [ic_JLukasiewicz_4])).
% 35.41/5.75  thf(zip_derived_cl1, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ (implies @ X0 @ X1) @ (implies @ X2 @ X3)) @ 
% 35.41/5.75            (implies @ X4 @ 
% 35.41/5.75             (implies @ (implies @ X3 @ X0) @ (implies @ X2 @ X0)))))),
% 35.41/5.75      inference('cnf', [status(esa)], [ic_JLukasiewicz_4])).
% 35.41/5.75  thf(zip_derived_cl1, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ (implies @ X0 @ X1) @ (implies @ X2 @ X3)) @ 
% 35.41/5.75            (implies @ X4 @ 
% 35.41/5.75             (implies @ (implies @ X3 @ X0) @ (implies @ X2 @ X0)))))),
% 35.41/5.75      inference('cnf', [status(esa)], [ic_JLukasiewicz_4])).
% 35.41/5.75  thf(condensed_detachment, axiom,
% 35.41/5.75    (( ~( is_a_theorem @ ( implies @ X @ Y ) ) ) | ( ~( is_a_theorem @ X ) ) | 
% 35.41/5.75     ( is_a_theorem @ Y ))).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl3, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ X3 @ 
% 35.41/5.75             (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0))))
% 35.41/5.75          | ~ (is_a_theorem @ 
% 35.41/5.75               (implies @ (implies @ X0 @ X4) @ (implies @ X1 @ X2))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl4, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X5 @ 
% 35.41/5.75            (implies @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0)) @ 
% 35.41/5.75              (implies @ X0 @ X4)) @ 
% 35.41/5.75             (implies @ X3 @ (implies @ X0 @ X4)))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl5, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X4 @ X1) @ (implies @ X3 @ X1)) @ 
% 35.41/5.75              (implies @ X1 @ X0)) @ 
% 35.41/5.75             (implies @ X2 @ (implies @ X1 @ X0))))
% 35.41/5.75          | ~ (is_a_theorem @ X5))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl4, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl5, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X4 @ X1) @ (implies @ X3 @ X1)) @ 
% 35.41/5.75              (implies @ X1 @ X0)) @ 
% 35.41/5.75             (implies @ X2 @ (implies @ X1 @ X0))))
% 35.41/5.75          | ~ (is_a_theorem @ X5))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl4, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl8, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ X5)
% 35.41/5.75          |  (is_a_theorem @ (implies @ X2 @ (implies @ X1 @ X0)))
% 35.41/5.75          | ~ (is_a_theorem @ 
% 35.41/5.75               (implies @ 
% 35.41/5.75                (implies @ (implies @ X4 @ X1) @ (implies @ X3 @ X1)) @ 
% 35.41/5.75                (implies @ X1 @ X0))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl5, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl18, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X3 @ X1) @ (implies @ X2 @ X1)) @ 
% 35.41/5.75              (implies @ X1 @ X0)))
% 35.41/5.75          |  (is_a_theorem @ (implies @ X4 @ (implies @ X1 @ X0))))),
% 35.41/5.75      inference('condensation', [status(thm)], [zip_derived_cl8])).
% 35.41/5.75  thf(zip_derived_cl21, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ X4)
% 35.41/5.75          |  (is_a_theorem @ 
% 35.41/5.75              (implies @ X3 @ 
% 35.41/5.75               (implies @ (implies @ X1 @ X0) @ 
% 35.41/5.75                (implies @ X0 @ (implies @ X1 @ X0))))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl5, zip_derived_cl18])).
% 35.41/5.75  thf(zip_derived_cl4, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X5 @ 
% 35.41/5.75            (implies @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0)) @ 
% 35.41/5.75              (implies @ X0 @ X4)) @ 
% 35.41/5.75             (implies @ X3 @ (implies @ X0 @ X4)))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl332, plain,
% 35.41/5.75      (![X6 : $i, X7 : $i, X8 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X8 @ 
% 35.41/5.75            (implies @ (implies @ X7 @ X6) @ 
% 35.41/5.75             (implies @ X6 @ (implies @ X7 @ X6)))))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl21, zip_derived_cl4])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl384, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ (implies @ X1 @ X0) @ 
% 35.41/5.75             (implies @ X0 @ (implies @ X1 @ X0))))
% 35.41/5.75          | ~ (is_a_theorem @ X2))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl332, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl4, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X5 @ 
% 35.41/5.75            (implies @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0)) @ 
% 35.41/5.75              (implies @ X0 @ X4)) @ 
% 35.41/5.75             (implies @ X3 @ (implies @ X0 @ X4)))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl417, plain,
% 35.41/5.75      (![X6 : $i, X7 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ X7 @ X6) @ 
% 35.41/5.75            (implies @ X6 @ (implies @ X7 @ X6))))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl384, zip_derived_cl4])).
% 35.41/5.75  thf(zip_derived_cl3, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ X3 @ 
% 35.41/5.75             (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0))))
% 35.41/5.75          | ~ (is_a_theorem @ 
% 35.41/5.75               (implies @ (implies @ X0 @ X4) @ (implies @ X1 @ X2))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl467, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X2 @ 
% 35.41/5.75            (implies @ (implies @ (implies @ X1 @ X0) @ X1) @ 
% 35.41/5.75             (implies @ X0 @ X1))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl417, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl470, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ (implies @ (implies @ X0 @ X1) @ X0) @ 
% 35.41/5.75             (implies @ X1 @ X0)))
% 35.41/5.75          | ~ (is_a_theorem @ X2))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl467, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl4, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X5 @ 
% 35.41/5.75            (implies @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0)) @ 
% 35.41/5.75              (implies @ X0 @ X4)) @ 
% 35.41/5.75             (implies @ X3 @ (implies @ X0 @ X4)))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl585, plain,
% 35.41/5.75      (![X6 : $i, X7 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ (implies @ X6 @ X7) @ X6) @ 
% 35.41/5.75            (implies @ X7 @ X6)))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl470, zip_derived_cl4])).
% 35.41/5.75  thf(zip_derived_cl18, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X3 @ X1) @ (implies @ X2 @ X1)) @ 
% 35.41/5.75              (implies @ X1 @ X0)))
% 35.41/5.75          |  (is_a_theorem @ (implies @ X4 @ (implies @ X1 @ X0))))),
% 35.41/5.75      inference('condensation', [status(thm)], [zip_derived_cl8])).
% 35.41/5.75  thf(zip_derived_cl860, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75          (is_a_theorem @ (implies @ X2 @ (implies @ X0 @ (implies @ X1 @ X0))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl585, zip_derived_cl18])).
% 35.41/5.75  thf(zip_derived_cl3, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ X3 @ 
% 35.41/5.75             (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0))))
% 35.41/5.75          | ~ (is_a_theorem @ 
% 35.41/5.75               (implies @ (implies @ X0 @ X4) @ (implies @ X1 @ X2))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl904, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X4 @ 
% 35.41/5.75            (implies @ (implies @ (implies @ X1 @ X0) @ X3) @ 
% 35.41/5.75             (implies @ X0 @ X3))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl860, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl1161, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ (implies @ (implies @ X2 @ X1) @ X0) @ 
% 35.41/5.75             (implies @ X1 @ X0)))
% 35.41/5.75          | ~ (is_a_theorem @ X3))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl904, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl1568, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ X3)
% 35.41/5.75          |  (is_a_theorem @ (implies @ X1 @ X0))
% 35.41/5.75          | ~ (is_a_theorem @ (implies @ (implies @ X2 @ X1) @ X0)))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1161, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl1651, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ (implies @ X2 @ X1) @ X0))
% 35.41/5.75          |  (is_a_theorem @ (implies @ X1 @ X0)))),
% 35.41/5.75      inference('condensation', [status(thm)], [zip_derived_cl1568])).
% 35.41/5.75  thf(zip_derived_cl1672, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ X1 @ X2) @ 
% 35.41/5.75            (implies @ X3 @ 
% 35.41/5.75             (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0)))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl1651])).
% 35.41/5.75  thf(zip_derived_cl860, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75          (is_a_theorem @ (implies @ X2 @ (implies @ X0 @ (implies @ X1 @ X0))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl585, zip_derived_cl18])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl889, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75         ( (is_a_theorem @ (implies @ X0 @ (implies @ X1 @ X0)))
% 35.41/5.75          | ~ (is_a_theorem @ X2))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl860, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl4, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X5 @ 
% 35.41/5.75            (implies @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0)) @ 
% 35.41/5.75              (implies @ X0 @ X4)) @ 
% 35.41/5.75             (implies @ X3 @ (implies @ X0 @ X4)))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl975, plain,
% 35.41/5.75      (![X6 : $i, X7 : $i]:
% 35.41/5.75          (is_a_theorem @ (implies @ X6 @ (implies @ X7 @ X6)))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl889, zip_derived_cl4])).
% 35.41/5.75  thf(zip_derived_cl3, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ X3 @ 
% 35.41/5.75             (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0))))
% 35.41/5.75          | ~ (is_a_theorem @ 
% 35.41/5.75               (implies @ (implies @ X0 @ X4) @ (implies @ X1 @ X2))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl1029, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X3 @ 
% 35.41/5.75            (implies @ (implies @ (implies @ X1 @ X0) @ X1) @ 
% 35.41/5.75             (implies @ X2 @ X1))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl975, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl1295, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ (implies @ (implies @ X0 @ X2) @ X0) @ 
% 35.41/5.75             (implies @ X1 @ X0)))
% 35.41/5.75          | ~ (is_a_theorem @ X3))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1029, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl4, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X5 @ 
% 35.41/5.75            (implies @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0)) @ 
% 35.41/5.75              (implies @ X0 @ X4)) @ 
% 35.41/5.75             (implies @ X3 @ (implies @ X0 @ X4)))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl2011, plain,
% 35.41/5.75      (![X6 : $i, X7 : $i, X8 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ (implies @ X6 @ X8) @ X6) @ 
% 35.41/5.75            (implies @ X7 @ X6)))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl1295, zip_derived_cl4])).
% 35.41/5.75  thf(zip_derived_cl3, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ X3 @ 
% 35.41/5.75             (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0))))
% 35.41/5.75          | ~ (is_a_theorem @ 
% 35.41/5.75               (implies @ (implies @ X0 @ X4) @ (implies @ X1 @ X2))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl2364, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X3 @ 
% 35.41/5.75            (implies @ (implies @ X0 @ (implies @ X0 @ X2)) @ 
% 35.41/5.75             (implies @ X1 @ (implies @ X0 @ X2)))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl2011, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl4557, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ (implies @ X1 @ (implies @ X1 @ X0)) @ 
% 35.41/5.75             (implies @ X2 @ (implies @ X1 @ X0))))
% 35.41/5.75          | ~ (is_a_theorem @ X3))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl2364, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl1161, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ (implies @ (implies @ X2 @ X1) @ X0) @ 
% 35.41/5.75             (implies @ X1 @ X0)))
% 35.41/5.75          | ~ (is_a_theorem @ X3))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl904, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl4, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X5 @ 
% 35.41/5.75            (implies @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0)) @ 
% 35.41/5.75              (implies @ X0 @ X4)) @ 
% 35.41/5.75             (implies @ X3 @ (implies @ X0 @ X4)))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl1599, plain,
% 35.41/5.75      (![X6 : $i, X7 : $i, X8 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ (implies @ X8 @ X7) @ X6) @ 
% 35.41/5.75            (implies @ X7 @ X6)))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl1161, zip_derived_cl4])).
% 35.41/5.75  thf(zip_derived_cl1295, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ (implies @ (implies @ X0 @ X2) @ X0) @ 
% 35.41/5.75             (implies @ X1 @ X0)))
% 35.41/5.75          | ~ (is_a_theorem @ X3))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1029, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl1980, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ X3)
% 35.41/5.75          |  (is_a_theorem @ (implies @ X1 @ X0))
% 35.41/5.75          | ~ (is_a_theorem @ (implies @ (implies @ X0 @ X2) @ X0)))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1295, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl2069, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ (implies @ X0 @ X1) @ X0))
% 35.41/5.75          |  (is_a_theorem @ (implies @ X2 @ X0)))),
% 35.41/5.75      inference('condensation', [status(thm)], [zip_derived_cl1980])).
% 35.41/5.75  thf(zip_derived_cl2092, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75          (is_a_theorem @ (implies @ X1 @ (implies @ X0 @ X0)))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1599, zip_derived_cl2069])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl2096, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         ( (is_a_theorem @ (implies @ X0 @ X0)) | ~ (is_a_theorem @ X1))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl2092, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl4, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X5 @ 
% 35.41/5.75            (implies @ 
% 35.41/5.75             (implies @ 
% 35.41/5.75              (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0)) @ 
% 35.41/5.75              (implies @ X0 @ X4)) @ 
% 35.41/5.75             (implies @ X3 @ (implies @ X0 @ X4)))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1, zip_derived_cl3])).
% 35.41/5.75  thf(zip_derived_cl2159, plain,
% 35.41/5.75      (![X6 : $i]:  (is_a_theorem @ (implies @ X6 @ X6))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl2096, zip_derived_cl4])).
% 35.41/5.75  thf(zip_derived_cl7178, plain,
% 35.41/5.75      (![X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ X2 @ (implies @ X2 @ X1)) @ 
% 35.41/5.75            (implies @ X3 @ (implies @ X2 @ X1))))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl4557, zip_derived_cl2159])).
% 35.41/5.75  thf(zip_derived_cl4557, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ (implies @ X1 @ (implies @ X1 @ X0)) @ 
% 35.41/5.75             (implies @ X2 @ (implies @ X1 @ X0))))
% 35.41/5.75          | ~ (is_a_theorem @ X3))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl2364, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl7112, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ X3)
% 35.41/5.75          |  (is_a_theorem @ (implies @ X2 @ (implies @ X1 @ X0)))
% 35.41/5.75          | ~ (is_a_theorem @ (implies @ X1 @ (implies @ X1 @ X0))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl4557, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl7305, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X1 @ (implies @ X1 @ X0)))
% 35.41/5.75          |  (is_a_theorem @ (implies @ X2 @ (implies @ X1 @ X0))))),
% 35.41/5.75      inference('condensation', [status(thm)], [zip_derived_cl7112])).
% 35.41/5.75  thf(zip_derived_cl8873, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X2 @ 
% 35.41/5.75            (implies @ (implies @ X1 @ (implies @ X1 @ X0)) @ 
% 35.41/5.75             (implies @ X1 @ X0))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl7178, zip_derived_cl7305])).
% 35.41/5.75  thf(zip_derived_cl2011, plain,
% 35.41/5.75      (![X6 : $i, X7 : $i, X8 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ (implies @ X6 @ X8) @ X6) @ 
% 35.41/5.75            (implies @ X7 @ X6)))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl1295, zip_derived_cl4])).
% 35.41/5.75  thf(zip_derived_cl7305, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X1 @ (implies @ X1 @ X0)))
% 35.41/5.75          |  (is_a_theorem @ (implies @ X2 @ (implies @ X1 @ X0))))),
% 35.41/5.75      inference('condensation', [status(thm)], [zip_derived_cl7112])).
% 35.41/5.75  thf(zip_derived_cl7358, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ X2 @ 
% 35.41/5.75            (implies @ (implies @ (implies @ X0 @ X1) @ X0) @ X0)))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl2011, zip_derived_cl7305])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl7604, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75         ( (is_a_theorem @ 
% 35.41/5.75            (implies @ (implies @ (implies @ X0 @ X1) @ X0) @ X0))
% 35.41/5.75          | ~ (is_a_theorem @ X2))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl7358, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl2159, plain,
% 35.41/5.75      (![X6 : $i]:  (is_a_theorem @ (implies @ X6 @ X6))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl2096, zip_derived_cl4])).
% 35.41/5.75  thf(zip_derived_cl7974, plain,
% 35.41/5.75      (![X1 : $i, X2 : $i]:
% 35.41/5.75          (is_a_theorem @ (implies @ (implies @ (implies @ X1 @ X2) @ X1) @ X1))),
% 35.41/5.75      inference('sup+', [status(thm)], [zip_derived_cl7604, zip_derived_cl2159])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl8114, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         ( (is_a_theorem @ X0)
% 35.41/5.75          | ~ (is_a_theorem @ (implies @ (implies @ X0 @ X1) @ X0)))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl7974, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl9069, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ X1 @ (implies @ X1 @ X0)) @ 
% 35.41/5.75            (implies @ X1 @ X0)))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl8873, zip_derived_cl8114])).
% 35.41/5.75  thf(zip_derived_cl0, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         (~ (is_a_theorem @ (implies @ X0 @ X1))
% 35.41/5.75          | ~ (is_a_theorem @ X0)
% 35.41/5.75          |  (is_a_theorem @ X1))),
% 35.41/5.75      inference('cnf', [status(esa)], [condensed_detachment])).
% 35.41/5.75  thf(zip_derived_cl9135, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i]:
% 35.41/5.75         ( (is_a_theorem @ (implies @ X1 @ X0))
% 35.41/5.75          | ~ (is_a_theorem @ (implies @ X1 @ (implies @ X1 @ X0))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl9069, zip_derived_cl0])).
% 35.41/5.75  thf(zip_derived_cl9253, plain,
% 35.41/5.75      (![X0 : $i, X1 : $i, X2 : $i]:
% 35.41/5.75          (is_a_theorem @ 
% 35.41/5.75           (implies @ (implies @ X1 @ X2) @ 
% 35.41/5.75            (implies @ (implies @ X2 @ X0) @ (implies @ X1 @ X0))))),
% 35.41/5.75      inference('sup-', [status(thm)], [zip_derived_cl1672, zip_derived_cl9135])).
% 35.41/5.75  thf(zip_derived_cl9528, plain, ($false),
% 35.41/5.75      inference('demod', [status(thm)], [zip_derived_cl2, zip_derived_cl9253])).
% 35.41/5.75  
% 35.41/5.75  % SZS output end Refutation
% 35.41/5.75  
% 35.41/5.75  
% 35.41/5.75  % Terminating...
% 6.22/5.80  % Runner terminated.
% 6.22/5.83  % Zipperpin 1.5 exiting
%------------------------------------------------------------------------------