%------------------------------------------------------------------------------
% File : Zipperpin---2.1.9999
% Problem : LCL311-3 : TPTP v9.3.1. Released v2.3.0.
% Transfm : none
% Format : tptp:raw
% Command : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.ftWSvhbbAz true
% Computer : n029.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 01:35:41 PM UTC 2026
% Result : Unsatisfiable 21.32s 3.70s
% Output : Refutation 21.32s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : LCL311-3 : TPTP v9.3.1. Released v2.3.0.
% 0.00/0.05 % Command : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.ftWSvhbbAz true
% 0.13/0.39 % Computer : n029.cluster.edu
% 0.13/0.39 % Model : x86_64 x86_64
% 0.13/0.39 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.39 % Memory : 8046.5625MB
% 0.13/0.39 % OS : Linux 6.8.0-71-generic
% 0.13/0.39 % CPULimit : 300
% 0.13/0.39 % WCLimit : 300
% 0.13/0.39 % DateTime : Sat Sep 5 20:40:10 UTC 2026
% 0.13/0.39 % CPUTime :
% 0.13/0.39 % Running portfolio for 300 s
% 0.13/0.39 % File : /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.13/0.39 % Number of cores: 8
% 0.13/0.40 % Python version: Python 3.12.3
% 0.13/0.40 % Running in FO mode
% 0.46/0.68 % Total configuration time : 435
% 0.46/0.68 % Estimated wc time : 1092
% 0.46/0.68 % Estimated cpu time (7 cpus) : 156.0
% 0.51/0.82 % /export/starexec/sandbox/solver/bin/fo/fo1_av.sh running for 75s
% 0.51/0.82 % /export/starexec/sandbox/solver/bin/fo/fo3_bce.sh running for 75s
% 0.51/0.82 % /export/starexec/sandbox/solver/bin/fo/fo6_bce.sh running for 75s
% 0.51/0.82 % /export/starexec/sandbox/solver/bin/fo/fo13.sh running for 50s
% 0.51/0.82 % /export/starexec/sandbox/solver/bin/fo/fo7.sh running for 63s
% 0.51/0.82 % /export/starexec/sandbox/solver/bin/fo/fo5.sh running for 50s
% 0.51/0.82 % /export/starexec/sandbox/solver/bin/fo/fo4.sh running for 50s
% 21.32/3.70 % Solved by fo/fo6_bce.sh.
% 21.32/3.70 % BCE start: 11
% 21.32/3.70 % BCE eliminated: 0
% 21.32/3.70 % PE start: 11
% 21.32/3.70 logic: eq
% 21.32/3.70 % PE eliminated: 1
% 21.32/3.70 % done 719 iterations in 2.849s
% 21.32/3.70 % SZS status Theorem for '/export/starexec/sandbox/benchmark/theBenchmark.p'
% 21.32/3.70 % SZS output start Refutation
% 21.32/3.70 thf(axiom_type, type, axiom: $i > $o).
% 21.32/3.70 thf(implies_type, type, implies: $i > $i > $i).
% 21.32/3.70 thf(equivalent_type, type, equivalent: $i > $i > $i).
% 21.32/3.70 thf(p_type, type, p: $i).
% 21.32/3.70 thf(or_type, type, or: $i > $i > $i).
% 21.32/3.70 thf(and_type, type, and: $i > $i > $i).
% 21.32/3.70 thf(theorem_type, type, theorem: $i > $o).
% 21.32/3.70 thf(not_type, type, not: $i > $i).
% 21.32/3.70 thf(and_defn, axiom,
% 21.32/3.70 (( and @ P @ Q ) = ( not @ ( or @ ( not @ P ) @ ( not @ Q ) ) ))).
% 21.32/3.70 thf(zip_derived_cl8, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ((and @ X0 @ X1) = (not @ (or @ (not @ X0) @ (not @ X1))))),
% 21.32/3.70 inference('cnf', [status(esa)], [and_defn])).
% 21.32/3.70 thf(implies_definition, axiom,
% 21.32/3.70 (( implies @ X @ Y ) = ( or @ ( not @ X ) @ Y ))).
% 21.32/3.70 thf(zip_derived_cl5, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: ((implies @ X0 @ X1) = (or @ (not @ X0) @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [implies_definition])).
% 21.32/3.70 thf(zip_derived_cl38, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ((and @ X0 @ X1) = (not @ (implies @ X0 @ (not @ X1))))),
% 21.32/3.70 inference('demod', [status(thm)], [zip_derived_cl8, zip_derived_cl5])).
% 21.32/3.70 thf(equivalent_defn, axiom,
% 21.32/3.70 (( equivalent @ P @ Q ) =
% 21.32/3.70 ( and @ ( implies @ P @ Q ) @ ( implies @ Q @ P ) ))).
% 21.32/3.70 thf(zip_derived_cl9, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ((equivalent @ X0 @ X1)
% 21.32/3.70 = (and @ (implies @ X0 @ X1) @ (implies @ X1 @ X0)))),
% 21.32/3.70 inference('cnf', [status(esa)], [equivalent_defn])).
% 21.32/3.70 thf(zip_derived_cl43, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ((equivalent @ X0 @ X1)
% 21.32/3.70 = (not @
% 21.32/3.70 (implies @ (implies @ X0 @ X1) @ (not @ (implies @ X1 @ X0)))))),
% 21.32/3.70 inference('s_sup+', [status(thm)], [zip_derived_cl38, zip_derived_cl9])).
% 21.32/3.70 thf(zip_derived_cl5, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: ((implies @ X0 @ X1) = (or @ (not @ X0) @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [implies_definition])).
% 21.32/3.70 thf(axiom_1_3, axiom, (axiom @ ( implies @ A @ ( or @ B @ A ) ))).
% 21.32/3.70 thf(zip_derived_cl1, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: (axiom @ (implies @ X0 @ (or @ X1 @ X0)))),
% 21.32/3.70 inference('cnf', [status(esa)], [axiom_1_3])).
% 21.32/3.70 thf(rule_1, axiom, (( theorem @ X ) | ( ~( axiom @ X ) ))).
% 21.32/3.70 thf(zip_derived_cl6, plain, (![X0 : $i]: ( (theorem @ X0) | ~ (axiom @ X0))),
% 21.32/3.70 inference('cnf', [status(esa)], [rule_1])).
% 21.32/3.70 thf(zip_derived_cl34, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: (theorem @ (implies @ X0 @ (or @ X1 @ X0)))),
% 21.32/3.70 inference('dp-resolution', [status(thm)],
% 21.32/3.70 [zip_derived_cl1, zip_derived_cl6])).
% 21.32/3.70 thf(zip_derived_cl45, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: (theorem @ (implies @ X0 @ (implies @ X1 @ X0)))),
% 21.32/3.70 inference('s_sup+', [status(thm)], [zip_derived_cl5, zip_derived_cl34])).
% 21.32/3.70 thf(zip_derived_cl5, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: ((implies @ X0 @ X1) = (or @ (not @ X0) @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [implies_definition])).
% 21.32/3.70 thf(zip_derived_cl5, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: ((implies @ X0 @ X1) = (or @ (not @ X0) @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [implies_definition])).
% 21.32/3.70 thf(axiom_1_5, axiom,
% 21.32/3.70 (axiom @
% 21.32/3.70 ( implies @ ( or @ A @ ( or @ B @ C ) ) @ ( or @ B @ ( or @ A @ C ) ) ))).
% 21.32/3.70 thf(zip_derived_cl3, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i, X2 : $i]:
% 21.32/3.70 (axiom @
% 21.32/3.70 (implies @ (or @ X0 @ (or @ X1 @ X2)) @ (or @ X1 @ (or @ X0 @ X2))))),
% 21.32/3.70 inference('cnf', [status(esa)], [axiom_1_5])).
% 21.32/3.70 thf(zip_derived_cl6, plain, (![X0 : $i]: ( (theorem @ X0) | ~ (axiom @ X0))),
% 21.32/3.70 inference('cnf', [status(esa)], [rule_1])).
% 21.32/3.70 thf(zip_derived_cl36, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i, X2 : $i]:
% 21.32/3.70 (theorem @
% 21.32/3.70 (implies @ (or @ X1 @ (or @ X2 @ X0)) @ (or @ X2 @ (or @ X1 @ X0))))),
% 21.32/3.70 inference('dp-resolution', [status(thm)],
% 21.32/3.70 [zip_derived_cl3, zip_derived_cl6])).
% 21.32/3.70 thf(rule_2, axiom,
% 21.32/3.70 (( theorem @ X ) | ( ~( theorem @ ( implies @ Y @ X ) ) ) |
% 21.32/3.70 ( ~( theorem @ Y ) ))).
% 21.32/3.70 thf(zip_derived_cl7, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ( (theorem @ X0)
% 21.32/3.70 | ~ (theorem @ (implies @ X1 @ X0))
% 21.32/3.70 | ~ (theorem @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [rule_2])).
% 21.32/3.70 thf(zip_derived_cl57, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i, X2 : $i]:
% 21.32/3.70 ( (theorem @ (or @ X2 @ (or @ X1 @ X0)))
% 21.32/3.70 | ~ (theorem @ (or @ X1 @ (or @ X2 @ X0))))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl36, zip_derived_cl7])).
% 21.32/3.70 thf(zip_derived_cl113, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i, X2 : $i]:
% 21.32/3.70 ( (theorem @ (or @ X1 @ (or @ (not @ X2) @ X0)))
% 21.32/3.70 | ~ (theorem @ (implies @ X2 @ (or @ X1 @ X0))))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl5, zip_derived_cl57])).
% 21.32/3.70 thf(zip_derived_cl5, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: ((implies @ X0 @ X1) = (or @ (not @ X0) @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [implies_definition])).
% 21.32/3.70 thf(zip_derived_cl116, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i, X2 : $i]:
% 21.32/3.70 ( (theorem @ (or @ X1 @ (implies @ X2 @ X0)))
% 21.32/3.70 | ~ (theorem @ (implies @ X2 @ (or @ X1 @ X0))))),
% 21.32/3.70 inference('demod', [status(thm)], [zip_derived_cl113, zip_derived_cl5])).
% 21.32/3.70 thf(zip_derived_cl149, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i, X2 : $i]:
% 21.32/3.70 ( (theorem @ (implies @ X2 @ (implies @ X1 @ X0)))
% 21.32/3.70 | ~ (theorem @ (implies @ X1 @ (or @ (not @ X2) @ X0))))),
% 21.32/3.70 inference('s_sup+', [status(thm)], [zip_derived_cl5, zip_derived_cl116])).
% 21.32/3.70 thf(zip_derived_cl5, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: ((implies @ X0 @ X1) = (or @ (not @ X0) @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [implies_definition])).
% 21.32/3.70 thf(zip_derived_cl150, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i, X2 : $i]:
% 21.32/3.70 ( (theorem @ (implies @ X2 @ (implies @ X1 @ X0)))
% 21.32/3.70 | ~ (theorem @ (implies @ X1 @ (implies @ X2 @ X0))))),
% 21.32/3.70 inference('demod', [status(thm)], [zip_derived_cl149, zip_derived_cl5])).
% 21.32/3.70 thf(zip_derived_cl263, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: (theorem @ (implies @ X1 @ (implies @ X0 @ X0)))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl45, zip_derived_cl150])).
% 21.32/3.70 thf(zip_derived_cl7, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ( (theorem @ X0)
% 21.32/3.70 | ~ (theorem @ (implies @ X1 @ X0))
% 21.32/3.70 | ~ (theorem @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [rule_2])).
% 21.32/3.70 thf(zip_derived_cl281, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ( (theorem @ (implies @ X0 @ X0)) | ~ (theorem @ X1))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl263, zip_derived_cl7])).
% 21.32/3.70 thf(zip_derived_cl45, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: (theorem @ (implies @ X0 @ (implies @ X1 @ X0)))),
% 21.32/3.70 inference('s_sup+', [status(thm)], [zip_derived_cl5, zip_derived_cl34])).
% 21.32/3.70 thf(zip_derived_cl298, plain, (![X2 : $i]: (theorem @ (implies @ X2 @ X2))),
% 21.32/3.70 inference('s_sup+', [status(thm)], [zip_derived_cl281, zip_derived_cl45])).
% 21.32/3.70 thf(zip_derived_cl150, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i, X2 : $i]:
% 21.32/3.70 ( (theorem @ (implies @ X2 @ (implies @ X1 @ X0)))
% 21.32/3.70 | ~ (theorem @ (implies @ X1 @ (implies @ X2 @ X0))))),
% 21.32/3.70 inference('demod', [status(thm)], [zip_derived_cl149, zip_derived_cl5])).
% 21.32/3.70 thf(zip_derived_cl372, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 (theorem @ (implies @ X1 @ (implies @ (implies @ X1 @ X0) @ X0)))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl298, zip_derived_cl150])).
% 21.32/3.70 thf(zip_derived_cl7, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ( (theorem @ X0)
% 21.32/3.70 | ~ (theorem @ (implies @ X1 @ X0))
% 21.32/3.70 | ~ (theorem @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [rule_2])).
% 21.32/3.70 thf(zip_derived_cl435, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ( (theorem @ (implies @ (implies @ X1 @ X0) @ X0)) | ~ (theorem @ X1))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl372, zip_derived_cl7])).
% 21.32/3.70 thf(zip_derived_cl5, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: ((implies @ X0 @ X1) = (or @ (not @ X0) @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [implies_definition])).
% 21.32/3.70 thf(zip_derived_cl5, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: ((implies @ X0 @ X1) = (or @ (not @ X0) @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [implies_definition])).
% 21.32/3.70 thf(axiom_1_4, axiom,
% 21.32/3.70 (axiom @ ( implies @ ( or @ A @ B ) @ ( or @ B @ A ) ))).
% 21.32/3.70 thf(zip_derived_cl2, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 (axiom @ (implies @ (or @ X0 @ X1) @ (or @ X1 @ X0)))),
% 21.32/3.70 inference('cnf', [status(esa)], [axiom_1_4])).
% 21.32/3.70 thf(zip_derived_cl6, plain, (![X0 : $i]: ( (theorem @ X0) | ~ (axiom @ X0))),
% 21.32/3.70 inference('cnf', [status(esa)], [rule_1])).
% 21.32/3.70 thf(zip_derived_cl35, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 (theorem @ (implies @ (or @ X0 @ X1) @ (or @ X1 @ X0)))),
% 21.32/3.70 inference('dp-resolution', [status(thm)],
% 21.32/3.70 [zip_derived_cl2, zip_derived_cl6])).
% 21.32/3.70 thf(zip_derived_cl7, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ( (theorem @ X0)
% 21.32/3.70 | ~ (theorem @ (implies @ X1 @ X0))
% 21.32/3.70 | ~ (theorem @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [rule_2])).
% 21.32/3.70 thf(zip_derived_cl50, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ( (theorem @ (or @ X1 @ X0)) | ~ (theorem @ (or @ X0 @ X1)))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl35, zip_derived_cl7])).
% 21.32/3.70 thf(zip_derived_cl55, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ( (theorem @ (or @ X0 @ (not @ X1)))
% 21.32/3.70 | ~ (theorem @ (implies @ X1 @ X0)))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl5, zip_derived_cl50])).
% 21.32/3.70 thf(zip_derived_cl68, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ( (theorem @ (implies @ X1 @ (not @ X0)))
% 21.32/3.70 | ~ (theorem @ (implies @ X0 @ (not @ X1))))),
% 21.32/3.70 inference('s_sup+', [status(thm)], [zip_derived_cl5, zip_derived_cl55])).
% 21.32/3.70 thf(zip_derived_cl446, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 (~ (theorem @ X1)
% 21.32/3.70 | (theorem @ (implies @ X0 @ (not @ (implies @ X1 @ (not @ X0))))))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl435, zip_derived_cl68])).
% 21.32/3.70 thf(zip_derived_cl7, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 ( (theorem @ X0)
% 21.32/3.70 | ~ (theorem @ (implies @ X1 @ X0))
% 21.32/3.70 | ~ (theorem @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [rule_2])).
% 21.32/3.70 thf(zip_derived_cl478, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 (~ (theorem @ X1)
% 21.32/3.70 | (theorem @ (not @ (implies @ X1 @ (not @ X0))))
% 21.32/3.70 | ~ (theorem @ X0))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl446, zip_derived_cl7])).
% 21.32/3.70 thf(zip_derived_cl489, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]:
% 21.32/3.70 (~ (theorem @ (implies @ X1 @ X0))
% 21.32/3.70 | (theorem @ (equivalent @ X1 @ X0))
% 21.32/3.70 | ~ (theorem @ (implies @ X0 @ X1)))),
% 21.32/3.70 inference('s_sup+', [status(thm)], [zip_derived_cl43, zip_derived_cl478])).
% 21.32/3.70 thf(prove_this, conjecture,
% 21.32/3.70 (theorem @ ( equivalent @ ( implies @ p @ ( not @ p ) ) @ ( not @ p ) ))).
% 21.32/3.70 thf(zf_stmt_0, negated_conjecture,
% 21.32/3.70 (~( theorem @ ( equivalent @ ( implies @ p @ ( not @ p ) ) @ ( not @ p ) ) )),
% 21.32/3.70 inference('cnf.neg', [status(esa)], [prove_this])).
% 21.32/3.70 thf(zip_derived_cl10, plain,
% 21.32/3.70 (~ (theorem @ (equivalent @ (implies @ p @ (not @ p)) @ (not @ p)))),
% 21.32/3.70 inference('cnf', [status(esa)], [zf_stmt_0])).
% 21.32/3.70 thf(zip_derived_cl5119, plain,
% 21.32/3.70 ((~ (theorem @ (implies @ (not @ p) @ (implies @ p @ (not @ p))))
% 21.32/3.70 | ~ (theorem @ (implies @ (implies @ p @ (not @ p)) @ (not @ p))))),
% 21.32/3.70 inference('s_sup-', [status(thm)], [zip_derived_cl489, zip_derived_cl10])).
% 21.32/3.70 thf(zip_derived_cl45, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: (theorem @ (implies @ X0 @ (implies @ X1 @ X0)))),
% 21.32/3.70 inference('s_sup+', [status(thm)], [zip_derived_cl5, zip_derived_cl34])).
% 21.32/3.70 thf(zip_derived_cl5, plain,
% 21.32/3.70 (![X0 : $i, X1 : $i]: ((implies @ X0 @ X1) = (or @ (not @ X0) @ X1))),
% 21.32/3.70 inference('cnf', [status(esa)], [implies_definition])).
% 21.32/3.70 thf(axiom_1_2, axiom, (axiom @ ( implies @ ( or @ A @ A ) @ A ))).
% 21.32/3.70 thf(zip_derived_cl0, plain,
% 21.32/3.70 (![X0 : $i]: (axiom @ (implies @ (or @ X0 @ X0) @ X0))),
% 21.32/3.70 inference('cnf', [status(esa)], [axiom_1_2])).
% 21.32/3.70 thf(zip_derived_cl6, plain, (![X0 : $i]: ( (theorem @ X0) | ~ (axiom @ X0))),
% 21.32/3.70 inference('cnf', [status(esa)], [rule_1])).
% 21.32/3.70 thf(zip_derived_cl33, plain,
% 21.32/3.70 (![X0 : $i]: (theorem @ (implies @ (or @ X0 @ X0) @ X0))),
% 21.32/3.70 inference('dp-resolution', [status(thm)],
% 21.32/3.70 [zip_derived_cl0, zip_derived_cl6])).
% 21.32/3.70 thf(zip_derived_cl40, plain,
% 21.32/3.70 (![X0 : $i]:
% 21.32/3.70 (theorem @ (implies @ (implies @ X0 @ (not @ X0)) @ (not @ X0)))),
% 21.32/3.70 inference('s_sup+', [status(thm)], [zip_derived_cl5, zip_derived_cl33])).
% 21.32/3.70 thf(zip_derived_cl5122, plain, ($false),
% 21.32/3.70 inference('demod', [status(thm)],
% 21.32/3.70 [zip_derived_cl5119, zip_derived_cl45, zip_derived_cl40])).
% 21.32/3.70
% 21.32/3.70 % SZS output end Refutation
% 21.32/3.70
% 21.32/3.70
% 21.32/3.70 % Terminating...
% 21.32/3.74 % Runner terminated.
% 21.32/3.76 % Zipperpin 1.5 exiting
%------------------------------------------------------------------------------