TSTP Solution File: NUM172-1 by Zipperpin---2.1.9999
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- Process Solution
%------------------------------------------------------------------------------
% File : Zipperpin---2.1.9999
% Problem : NUM172-1 : TPTP v8.1.2. Bugfixed v2.1.0.
% Transfm : NO INFORMATION
% Format : NO INFORMATION
% Command : python3 /export/starexec/sandbox2/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox2/tmp/tmp.IpVJili2Ex true
% Computer : n017.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 12:39:25 EDT 2023
% Result : Unsatisfiable 51.62s 7.97s
% Output : Refutation 51.62s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12 % Problem : NUM172-1 : TPTP v8.1.2. Bugfixed v2.1.0.
% 0.07/0.13 % Command : python3 /export/starexec/sandbox2/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox2/tmp/tmp.IpVJili2Ex true
% 0.13/0.34 % Computer : n017.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 : Fri Aug 25 13:48:55 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
% 0.13/0.35 % Number of cores: 8
% 0.13/0.35 % Python version: Python 3.6.8
% 0.13/0.35 % Running in FO mode
% 0.21/0.67 % Total configuration time : 435
% 0.21/0.67 % Estimated wc time : 1092
% 0.21/0.67 % Estimated cpu time (7 cpus) : 156.0
% 0.63/0.71 % /export/starexec/sandbox2/solver/bin/fo/fo6_bce.sh running for 75s
% 0.63/0.72 % /export/starexec/sandbox2/solver/bin/fo/fo3_bce.sh running for 75s
% 0.63/0.74 % /export/starexec/sandbox2/solver/bin/fo/fo1_av.sh running for 75s
% 0.63/0.75 % /export/starexec/sandbox2/solver/bin/fo/fo7.sh running for 63s
% 0.63/0.76 % /export/starexec/sandbox2/solver/bin/fo/fo13.sh running for 50s
% 0.63/0.76 % /export/starexec/sandbox2/solver/bin/fo/fo5.sh running for 50s
% 0.63/0.77 % /export/starexec/sandbox2/solver/bin/fo/fo4.sh running for 50s
% 0.66/0.80 % /export/starexec/sandbox2/solver/bin/fo/fo1_lcnf.sh running for 50s
% 51.62/7.97 % Solved by fo/fo13.sh.
% 51.62/7.97 % done 4012 iterations in 7.189s
% 51.62/7.97 % SZS status Theorem for '/export/starexec/sandbox2/benchmark/theBenchmark.p'
% 51.62/7.97 % SZS output start Refutation
% 51.62/7.97 thf(universal_class_type, type, universal_class: $i).
% 51.62/7.97 thf(union_type, type, union: $i > $i > $i).
% 51.62/7.97 thf(null_class_type, type, null_class: $i).
% 51.62/7.97 thf(member_type, type, member: $i > $i > $o).
% 51.62/7.97 thf(unordered_pair_type, type, unordered_pair: $i > $i > $i).
% 51.62/7.97 thf(complement_type, type, complement: $i > $i).
% 51.62/7.97 thf(singleton_type, type, singleton: $i > $i).
% 51.62/7.97 thf(x_type, type, x: $i).
% 51.62/7.97 thf(intersection_type, type, intersection: $i > $i > $i).
% 51.62/7.97 thf(subclass_type, type, subclass: $i > $i > $o).
% 51.62/7.97 thf(successor_type, type, successor: $i > $i).
% 51.62/7.97 thf(regular_type, type, regular: $i > $i).
% 51.62/7.97 thf(singleton_set, axiom, (( unordered_pair @ X @ X ) = ( singleton @ X ))).
% 51.62/7.97 thf(zip_derived_cl11, plain,
% 51.62/7.97 (![X0 : $i]: ((unordered_pair @ X0 @ X0) = (singleton @ X0))),
% 51.62/7.97 inference('cnf', [status(esa)], [singleton_set])).
% 51.62/7.97 thf(prove_successor_is_different_1, conjecture,
% 51.62/7.97 (~( member @ x @ universal_class ))).
% 51.62/7.97 thf(zf_stmt_0, negated_conjecture, (member @ x @ universal_class),
% 51.62/7.97 inference('cnf.neg', [status(esa)], [prove_successor_is_different_1])).
% 51.62/7.97 thf(zip_derived_cl158, plain, ( (member @ x @ universal_class)),
% 51.62/7.97 inference('cnf', [status(esa)], [zf_stmt_0])).
% 51.62/7.97 thf(unordered_pair2, axiom,
% 51.62/7.97 (( ~( member @ X @ universal_class ) ) |
% 51.62/7.97 ( member @ X @ ( unordered_pair @ X @ Y ) ))).
% 51.62/7.97 thf(zip_derived_cl8, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 (~ (member @ X0 @ universal_class)
% 51.62/7.97 | (member @ X0 @ (unordered_pair @ X0 @ X1)))),
% 51.62/7.97 inference('cnf', [status(esa)], [unordered_pair2])).
% 51.62/7.97 thf(zip_derived_cl253, plain,
% 51.62/7.97 (![X0 : $i]: (member @ x @ (unordered_pair @ x @ X0))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl158, zip_derived_cl8])).
% 51.62/7.97 thf(zip_derived_cl257, plain, ( (member @ x @ (singleton @ x))),
% 51.62/7.97 inference('s_sup+', [status(thm)], [zip_derived_cl11, zip_derived_cl253])).
% 51.62/7.97 thf(prove_successor_is_different_2, conjecture, (( successor @ x ) != ( x ))).
% 51.62/7.97 thf(zf_stmt_1, negated_conjecture, (( successor @ x ) = ( x )),
% 51.62/7.97 inference('cnf.neg', [status(esa)], [prove_successor_is_different_2])).
% 51.62/7.97 thf(zip_derived_cl159, plain, (((successor @ x) = (x))),
% 51.62/7.97 inference('cnf', [status(esa)], [zf_stmt_1])).
% 51.62/7.97 thf(successor, axiom,
% 51.62/7.97 (( union @ X @ ( singleton @ X ) ) = ( successor @ X ))).
% 51.62/7.97 thf(zip_derived_cl42, plain,
% 51.62/7.97 (![X0 : $i]: ((union @ X0 @ (singleton @ X0)) = (successor @ X0))),
% 51.62/7.97 inference('cnf', [status(esa)], [successor])).
% 51.62/7.97 thf(union, axiom,
% 51.62/7.97 (( complement @ ( intersection @ ( complement @ X ) @ ( complement @ Y ) ) ) =
% 51.62/7.97 ( union @ X @ Y ))).
% 51.62/7.97 thf(zip_derived_cl25, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 ((complement @ (intersection @ (complement @ X0) @ (complement @ X1)))
% 51.62/7.97 = (union @ X0 @ X1))),
% 51.62/7.97 inference('cnf', [status(esa)], [union])).
% 51.62/7.97 thf(zip_derived_cl158, plain, ( (member @ x @ universal_class)),
% 51.62/7.97 inference('cnf', [status(esa)], [zf_stmt_0])).
% 51.62/7.97 thf(complement2, axiom,
% 51.62/7.97 (( ~( member @ Z @ universal_class ) ) |
% 51.62/7.97 ( member @ Z @ ( complement @ X ) ) | ( member @ Z @ X ))).
% 51.62/7.97 thf(zip_derived_cl24, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 (~ (member @ X0 @ universal_class)
% 51.62/7.97 | (member @ X0 @ (complement @ X1))
% 51.62/7.97 | (member @ X0 @ X1))),
% 51.62/7.97 inference('cnf', [status(esa)], [complement2])).
% 51.62/7.97 thf(zip_derived_cl516, plain,
% 51.62/7.97 (![X0 : $i]: ( (member @ x @ (complement @ X0)) | (member @ x @ X0))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl158, zip_derived_cl24])).
% 51.62/7.97 thf(zip_derived_cl542, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 ( (member @ x @ (union @ X1 @ X0))
% 51.62/7.97 | (member @ x @
% 51.62/7.97 (intersection @ (complement @ X1) @ (complement @ X0))))),
% 51.62/7.97 inference('s_sup+', [status(thm)], [zip_derived_cl25, zip_derived_cl516])).
% 51.62/7.97 thf(intersection2, axiom,
% 51.62/7.97 (( ~( member @ Z @ ( intersection @ X @ Y ) ) ) | ( member @ Z @ Y ))).
% 51.62/7.97 thf(zip_derived_cl21, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i, X2 : $i]:
% 51.62/7.97 (~ (member @ X0 @ (intersection @ X1 @ X2)) | (member @ X0 @ X2))),
% 51.62/7.97 inference('cnf', [status(esa)], [intersection2])).
% 51.62/7.97 thf(zip_derived_cl23387, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 ( (member @ x @ (union @ X1 @ X0)) | (member @ x @ (complement @ X0)))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl542, zip_derived_cl21])).
% 51.62/7.97 thf(zip_derived_cl48573, plain,
% 51.62/7.97 (![X0 : $i]:
% 51.62/7.97 ( (member @ x @ (successor @ X0))
% 51.62/7.97 | (member @ x @ (complement @ (singleton @ X0))))),
% 51.62/7.97 inference('s_sup+', [status(thm)],
% 51.62/7.97 [zip_derived_cl42, zip_derived_cl23387])).
% 51.62/7.97 thf(zip_derived_cl49743, plain,
% 51.62/7.97 (( (member @ x @ x) | (member @ x @ (complement @ (singleton @ x))))),
% 51.62/7.97 inference('s_sup+', [status(thm)],
% 51.62/7.97 [zip_derived_cl159, zip_derived_cl48573])).
% 51.62/7.97 thf(complement1, axiom,
% 51.62/7.97 (( ~( member @ Z @ ( complement @ X ) ) ) | ( ~( member @ Z @ X ) ))).
% 51.62/7.97 thf(zip_derived_cl23, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 (~ (member @ X0 @ (complement @ X1)) | ~ (member @ X0 @ X1))),
% 51.62/7.97 inference('cnf', [status(esa)], [complement1])).
% 51.62/7.97 thf(zip_derived_cl49794, plain,
% 51.62/7.97 (( (member @ x @ x) | ~ (member @ x @ (singleton @ x)))),
% 51.62/7.97 inference('s_sup-', [status(thm)],
% 51.62/7.97 [zip_derived_cl49743, zip_derived_cl23])).
% 51.62/7.97 thf(zip_derived_cl257, plain, ( (member @ x @ (singleton @ x))),
% 51.62/7.97 inference('s_sup+', [status(thm)], [zip_derived_cl11, zip_derived_cl253])).
% 51.62/7.97 thf(zip_derived_cl49818, plain, ( (member @ x @ x)),
% 51.62/7.97 inference('demod', [status(thm)],
% 51.62/7.97 [zip_derived_cl49794, zip_derived_cl257])).
% 51.62/7.97 thf(regularity1, axiom,
% 51.62/7.97 (( ( X ) = ( null_class ) ) | ( member @ ( regular @ X ) @ X ))).
% 51.62/7.97 thf(zip_derived_cl65, plain,
% 51.62/7.97 (![X0 : $i]: (((X0) = (null_class)) | (member @ (regular @ X0) @ X0))),
% 51.62/7.97 inference('cnf', [status(esa)], [regularity1])).
% 51.62/7.97 thf(zip_derived_cl11, plain,
% 51.62/7.97 (![X0 : $i]: ((unordered_pair @ X0 @ X0) = (singleton @ X0))),
% 51.62/7.97 inference('cnf', [status(esa)], [singleton_set])).
% 51.62/7.97 thf(unordered_pair_member, axiom,
% 51.62/7.97 (( ~( member @ U @ ( unordered_pair @ X @ Y ) ) ) | ( ( U ) = ( X ) ) |
% 51.62/7.97 ( ( U ) = ( Y ) ))).
% 51.62/7.97 thf(zip_derived_cl7, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i, X2 : $i]:
% 51.62/7.97 (~ (member @ X0 @ (unordered_pair @ X1 @ X2))
% 51.62/7.97 | ((X0) = (X1))
% 51.62/7.97 | ((X0) = (X2)))),
% 51.62/7.97 inference('cnf', [status(esa)], [unordered_pair_member])).
% 51.62/7.97 thf(zip_derived_cl228, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 (~ (member @ X1 @ (singleton @ X0)) | ((X1) = (X0)) | ((X1) = (X0)))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl11, zip_derived_cl7])).
% 51.62/7.97 thf(zip_derived_cl229, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 (((X1) = (X0)) | ~ (member @ X1 @ (singleton @ X0)))),
% 51.62/7.97 inference('simplify', [status(thm)], [zip_derived_cl228])).
% 51.62/7.97 thf(zip_derived_cl291, plain,
% 51.62/7.97 (![X0 : $i]:
% 51.62/7.97 (((singleton @ X0) = (null_class))
% 51.62/7.97 | ((regular @ (singleton @ X0)) = (X0)))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl65, zip_derived_cl229])).
% 51.62/7.97 thf(regularity2, axiom,
% 51.62/7.97 (( ( X ) = ( null_class ) ) |
% 51.62/7.97 ( ( intersection @ X @ ( regular @ X ) ) = ( null_class ) ))).
% 51.62/7.97 thf(zip_derived_cl66, plain,
% 51.62/7.97 (![X0 : $i]:
% 51.62/7.97 (((X0) = (null_class))
% 51.62/7.97 | ((intersection @ X0 @ (regular @ X0)) = (null_class)))),
% 51.62/7.97 inference('cnf', [status(esa)], [regularity2])).
% 51.62/7.97 thf(zip_derived_cl65, plain,
% 51.62/7.97 (![X0 : $i]: (((X0) = (null_class)) | (member @ (regular @ X0) @ X0))),
% 51.62/7.97 inference('cnf', [status(esa)], [regularity1])).
% 51.62/7.97 thf(intersection3, axiom,
% 51.62/7.97 (( ~( member @ Z @ X ) ) | ( ~( member @ Z @ Y ) ) |
% 51.62/7.97 ( member @ Z @ ( intersection @ X @ Y ) ))).
% 51.62/7.97 thf(zip_derived_cl22, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i, X2 : $i]:
% 51.62/7.97 (~ (member @ X0 @ X1)
% 51.62/7.97 | ~ (member @ X0 @ X2)
% 51.62/7.97 | (member @ X0 @ (intersection @ X1 @ X2)))),
% 51.62/7.97 inference('cnf', [status(esa)], [intersection3])).
% 51.62/7.97 thf(zip_derived_cl476, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 (((X0) = (null_class))
% 51.62/7.97 | ~ (member @ (regular @ X0) @ X1)
% 51.62/7.97 | (member @ (regular @ X0) @ (intersection @ X0 @ X1)))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl65, zip_derived_cl22])).
% 51.62/7.97 thf(zip_derived_cl18724, plain,
% 51.62/7.97 (![X0 : $i]:
% 51.62/7.97 (((X0) = (null_class))
% 51.62/7.97 | ((X0) = (null_class))
% 51.62/7.97 | ~ (member @ (regular @ X0) @ (regular @ X0))
% 51.62/7.97 | (member @ (regular @ X0) @ null_class))),
% 51.62/7.97 inference('s_sup+', [status(thm)], [zip_derived_cl66, zip_derived_cl476])).
% 51.62/7.97 thf(zip_derived_cl65, plain,
% 51.62/7.97 (![X0 : $i]: (((X0) = (null_class)) | (member @ (regular @ X0) @ X0))),
% 51.62/7.97 inference('cnf', [status(esa)], [regularity1])).
% 51.62/7.97 thf(class_elements_are_sets, axiom, (subclass @ X @ universal_class)).
% 51.62/7.97 thf(zip_derived_cl3, plain, (![X0 : $i]: (subclass @ X0 @ universal_class)),
% 51.62/7.97 inference('cnf', [status(esa)], [class_elements_are_sets])).
% 51.62/7.97 thf(subclass_members, axiom,
% 51.62/7.97 (( ~( subclass @ X @ Y ) ) | ( ~( member @ U @ X ) ) | ( member @ U @ Y ))).
% 51.62/7.97 thf(zip_derived_cl0, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i, X2 : $i]:
% 51.62/7.97 (~ (subclass @ X0 @ X1) | ~ (member @ X2 @ X0) | (member @ X2 @ X1))),
% 51.62/7.97 inference('cnf', [status(esa)], [subclass_members])).
% 51.62/7.97 thf(zip_derived_cl176, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 (~ (member @ X1 @ X0) | (member @ X1 @ universal_class))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl3, zip_derived_cl0])).
% 51.62/7.97 thf(zip_derived_cl286, plain,
% 51.62/7.97 (![X0 : $i]:
% 51.62/7.97 (((X0) = (null_class)) | (member @ (regular @ X0) @ universal_class))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl65, zip_derived_cl176])).
% 51.62/7.97 thf(zip_derived_cl65, plain,
% 51.62/7.97 (![X0 : $i]: (((X0) = (null_class)) | (member @ (regular @ X0) @ X0))),
% 51.62/7.97 inference('cnf', [status(esa)], [regularity1])).
% 51.62/7.97 thf(zip_derived_cl23, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 (~ (member @ X0 @ (complement @ X1)) | ~ (member @ X0 @ X1))),
% 51.62/7.97 inference('cnf', [status(esa)], [complement1])).
% 51.62/7.97 thf(zip_derived_cl294, plain,
% 51.62/7.97 (![X0 : $i]:
% 51.62/7.97 (((complement @ X0) = (null_class))
% 51.62/7.97 | ~ (member @ (regular @ (complement @ X0)) @ X0))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl65, zip_derived_cl23])).
% 51.62/7.97 thf(zip_derived_cl1389, plain,
% 51.62/7.97 ((((complement @ universal_class) = (null_class))
% 51.62/7.97 | ((complement @ universal_class) = (null_class)))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl286, zip_derived_cl294])).
% 51.62/7.97 thf(zip_derived_cl1392, plain,
% 51.62/7.97 (((complement @ universal_class) = (null_class))),
% 51.62/7.97 inference('simplify', [status(thm)], [zip_derived_cl1389])).
% 51.62/7.97 thf(zip_derived_cl23, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 (~ (member @ X0 @ (complement @ X1)) | ~ (member @ X0 @ X1))),
% 51.62/7.97 inference('cnf', [status(esa)], [complement1])).
% 51.62/7.97 thf(zip_derived_cl1394, plain,
% 51.62/7.97 (![X0 : $i]:
% 51.62/7.97 (~ (member @ X0 @ null_class) | ~ (member @ X0 @ universal_class))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl1392, zip_derived_cl23])).
% 51.62/7.97 thf(zip_derived_cl176, plain,
% 51.62/7.97 (![X0 : $i, X1 : $i]:
% 51.62/7.97 (~ (member @ X1 @ X0) | (member @ X1 @ universal_class))),
% 51.62/7.97 inference('s_sup-', [status(thm)], [zip_derived_cl3, zip_derived_cl0])).
% 51.62/7.97 thf(zip_derived_cl1431, plain, (![X0 : $i]: ~ (member @ X0 @ null_class)),
% 51.62/7.97 inference('clc', [status(thm)], [zip_derived_cl1394, zip_derived_cl176])).
% 51.62/7.97 thf(zip_derived_cl18769, plain,
% 51.62/7.97 (![X0 : $i]:
% 51.62/7.97 (((X0) = (null_class))
% 51.62/7.97 | ((X0) = (null_class))
% 51.62/7.97 | ~ (member @ (regular @ X0) @ (regular @ X0)))),
% 51.62/7.97 inference('demod', [status(thm)],
% 51.62/7.97 [zip_derived_cl18724, zip_derived_cl1431])).
% 51.62/7.97 thf(zip_derived_cl18770, plain,
% 51.62/7.97 (![X0 : $i]:
% 51.62/7.97 (~ (member @ (regular @ X0) @ (regular @ X0)) | ((X0) = (null_class)))),
% 51.62/7.97 inference('simplify', [status(thm)], [zip_derived_cl18769])).
% 51.62/7.97 thf(zip_derived_cl23127, plain,
% 51.62/7.97 (![X0 : $i]:
% 51.62/7.97 (((singleton @ X0) = (null_class))
% 51.62/7.97 | ~ (member @ X0 @ X0)
% 51.62/7.97 | ((singleton @ X0) = (null_class)))),
% 51.62/7.97 inference('s_sup-', [status(thm)],
% 51.62/7.97 [zip_derived_cl291, zip_derived_cl18770])).
% 51.62/7.97 thf(zip_derived_cl23133, plain,
% 51.62/7.97 (![X0 : $i]: (~ (member @ X0 @ X0) | ((singleton @ X0) = (null_class)))),
% 51.62/7.97 inference('simplify', [status(thm)], [zip_derived_cl23127])).
% 51.62/7.97 thf(zip_derived_cl49867, plain, (((singleton @ x) = (null_class))),
% 51.62/7.97 inference('s_sup-', [status(thm)],
% 51.62/7.97 [zip_derived_cl49818, zip_derived_cl23133])).
% 51.62/7.97 thf(zip_derived_cl1431, plain, (![X0 : $i]: ~ (member @ X0 @ null_class)),
% 51.62/7.97 inference('clc', [status(thm)], [zip_derived_cl1394, zip_derived_cl176])).
% 51.62/7.97 thf(zip_derived_cl49882, plain, ($false),
% 51.62/7.97 inference('demod', [status(thm)],
% 51.62/7.97 [zip_derived_cl257, zip_derived_cl49867, zip_derived_cl1431])).
% 51.62/7.97
% 51.62/7.97 % SZS output end Refutation
% 51.62/7.97
% 51.62/7.97
% 51.62/7.97 % Terminating...
% 52.27/8.10 % Runner terminated.
% 52.27/8.11 % Zipperpin 1.5 exiting
%------------------------------------------------------------------------------