%------------------------------------------------------------------------------
% File : Zipperpin---2.1.9999
% Problem : SWC065-1 : TPTP v9.2.0. Released v2.4.0.
% Transfm : none
% Format : tptp:raw
% Command : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.0Hi80AvaoF true
% Computer : n006.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 Oct 2 04:58:28 PM UTC 2025
% Result : Unsatisfiable 3.67s 1.27s
% Output : Refutation 3.67s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.13 % Problem : SWC065-1 : TPTP v9.2.0. Released v2.4.0.
% 0.07/0.14 % Command : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.0Hi80AvaoF true
% 0.14/0.35 % Computer : n006.cluster.edu
% 0.14/0.35 % Model : x86_64 x86_64
% 0.14/0.35 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.35 % Memory : 8042.1875MB
% 0.14/0.35 % OS : Linux 3.10.0-693.el7.x86_64
% 0.14/0.36 % CPULimit : 300
% 0.14/0.36 % WCLimit : 300
% 0.14/0.36 % DateTime : Wed Oct 1 17:12:53 EDT 2025
% 0.14/0.36 % CPUTime :
% 0.14/0.36 % Running portfolio for 300 s
% 0.14/0.36 % File : /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.14/0.36 % Number of cores: 8
% 0.14/0.36 % Python version: Python 3.6.8
% 0.14/0.36 % Running in FO mode
% 0.55/0.66 % Total configuration time : 435
% 0.55/0.66 % Estimated wc time : 1092
% 0.55/0.66 % Estimated cpu time (7 cpus) : 156.0
% 0.56/0.73 % /export/starexec/sandbox/solver/bin/fo/fo6_bce.sh running for 75s
% 0.56/0.73 % /export/starexec/sandbox/solver/bin/fo/fo3_bce.sh running for 75s
% 0.56/0.74 % /export/starexec/sandbox/solver/bin/fo/fo1_av.sh running for 75s
% 0.56/0.75 % /export/starexec/sandbox/solver/bin/fo/fo7.sh running for 63s
% 0.56/0.76 % /export/starexec/sandbox/solver/bin/fo/fo13.sh running for 50s
% 0.57/0.83 % /export/starexec/sandbox/solver/bin/fo/fo5.sh running for 50s
% 0.57/0.85 % /export/starexec/sandbox/solver/bin/fo/fo4.sh running for 50s
% 3.67/1.27 % Solved by fo/fo6_bce.sh.
% 3.67/1.27 % BCE start: 200
% 3.67/1.27 % BCE eliminated: 0
% 3.67/1.27 % PE start: 200
% 3.67/1.27 logic: eq
% 3.67/1.27 % PE eliminated: 4
% 3.67/1.27 % done 337 iterations in 0.465s
% 3.67/1.27 % SZS status Theorem for '/export/starexec/sandbox/benchmark/theBenchmark.p'
% 3.67/1.27 % SZS output start Refutation
% 3.67/1.27 thf(nil_type, type, nil: $i).
% 3.67/1.27 thf(sk2_type, type, sk2: $i).
% 3.67/1.27 thf(sk4_type, type, sk4: $i).
% 3.67/1.27 thf(sk5_type, type, sk5: $i).
% 3.67/1.27 thf(sk3_type, type, sk3: $i).
% 3.67/1.27 thf(neq_type, type, neq: $i > $i > $o).
% 3.67/1.27 thf(app_type, type, app: $i > $i > $i).
% 3.67/1.27 thf(ssList_type, type, ssList: $i > $o).
% 3.67/1.27 thf(sk1_type, type, sk1: $i).
% 3.67/1.27 thf(segmentP_type, type, segmentP: $i > $i > $o).
% 3.67/1.27 thf(co1_5, conjecture, (( sk2 ) != ( sk4 ))).
% 3.67/1.27 thf(zf_stmt_0, negated_conjecture, (( sk2 ) = ( sk4 )),
% 3.67/1.27 inference('cnf.neg', [status(esa)], [co1_5])).
% 3.67/1.27 thf(zip_derived_cl189, plain, (((sk2) = (sk4))),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_0])).
% 3.67/1.27 thf(co1_11, conjecture,
% 3.67/1.27 (~( ( ( nil ) != ( sk3 ) ) | ( ( nil ) = ( sk4 ) ) ))).
% 3.67/1.27 thf(zf_stmt_1, negated_conjecture,
% 3.67/1.27 (( ( nil ) != ( sk3 ) ) | ( ( nil ) = ( sk4 ) )),
% 3.67/1.27 inference('cnf.neg', [status(esa)], [co1_11])).
% 3.67/1.27 thf(zip_derived_cl195, plain, ((((nil) != (sk3)) | ((nil) = (sk4)))),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_1])).
% 3.67/1.27 thf(co1_6, conjecture, (( sk1 ) != ( sk3 ))).
% 3.67/1.27 thf(zf_stmt_2, negated_conjecture, (( sk1 ) = ( sk3 )),
% 3.67/1.27 inference('cnf.neg', [status(esa)], [co1_6])).
% 3.67/1.27 thf(zip_derived_cl190, plain, (((sk1) = (sk3))),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_2])).
% 3.67/1.27 thf(zip_derived_cl1434, plain, ((((nil) != (sk1)) | ((nil) = (sk4)))),
% 3.67/1.27 inference('demod', [status(thm)], [zip_derived_cl195, zip_derived_cl190])).
% 3.67/1.27 thf(co1_8, conjecture, (( app @ sk3 @ sk5 ) != ( sk4 ))).
% 3.67/1.27 thf(zf_stmt_3, negated_conjecture, (( app @ sk3 @ sk5 ) = ( sk4 )),
% 3.67/1.27 inference('cnf.neg', [status(esa)], [co1_8])).
% 3.67/1.27 thf(zip_derived_cl192, plain, (((app @ sk3 @ sk5) = (sk4))),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_3])).
% 3.67/1.27 thf(zip_derived_cl190, plain, (((sk1) = (sk3))),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_2])).
% 3.67/1.27 thf(zip_derived_cl189, plain, (((sk2) = (sk4))),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_0])).
% 3.67/1.27 thf(zip_derived_cl1435, plain, (((app @ sk1 @ sk5) = (sk2))),
% 3.67/1.27 inference('demod', [status(thm)],
% 3.67/1.27 [zip_derived_cl192, zip_derived_cl190, zip_derived_cl189])).
% 3.67/1.27 thf(clause74, axiom, (( ~( ssList @ U ) ) | ( ( app @ nil @ U ) = ( U ) ))).
% 3.67/1.27 thf(zip_derived_cl73, plain,
% 3.67/1.27 (![X0 : $i]: (~ (ssList @ X0) | ((app @ nil @ X0) = (X0)))),
% 3.67/1.27 inference('cnf', [status(esa)], [clause74])).
% 3.67/1.27 thf(clause173, axiom,
% 3.67/1.27 (( ( app @ ( app @ U @ V ) @ W ) != ( X ) ) | ( ~( ssList @ W ) ) |
% 3.67/1.27 ( ~( ssList @ U ) ) | ( ~( ssList @ V ) ) | ( ~( ssList @ X ) ) |
% 3.67/1.27 ( segmentP @ X @ V ))).
% 3.67/1.27 thf(zip_derived_cl172, plain,
% 3.67/1.27 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 3.67/1.27 (((app @ (app @ X1 @ X2) @ X3) != (X0))
% 3.67/1.27 | ~ (ssList @ X3)
% 3.67/1.27 | ~ (ssList @ X1)
% 3.67/1.27 | ~ (ssList @ X2)
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | (segmentP @ X0 @ X2))),
% 3.67/1.27 inference('cnf', [status(esa)], [clause173])).
% 3.67/1.27 thf(zip_derived_cl3202, plain,
% 3.67/1.27 (![X0 : $i, X1 : $i, X2 : $i]:
% 3.67/1.27 (~ (ssList @ X0)
% 3.67/1.27 | ((app @ X0 @ X2) != (X1))
% 3.67/1.27 | ~ (ssList @ X2)
% 3.67/1.27 | ~ (ssList @ nil)
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ~ (ssList @ X1)
% 3.67/1.27 | (segmentP @ X1 @ X0))),
% 3.67/1.27 inference('s_sup-', [status(thm)], [zip_derived_cl73, zip_derived_cl172])).
% 3.67/1.27 thf(clause8, axiom, (ssList @ nil)).
% 3.67/1.27 thf(zip_derived_cl7, plain, ( (ssList @ nil)),
% 3.67/1.27 inference('cnf', [status(esa)], [clause8])).
% 3.67/1.27 thf(zip_derived_cl3233, plain,
% 3.67/1.27 (![X0 : $i, X1 : $i, X2 : $i]:
% 3.67/1.27 (~ (ssList @ X0)
% 3.67/1.27 | ((app @ X0 @ X2) != (X1))
% 3.67/1.27 | ~ (ssList @ X2)
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ~ (ssList @ X1)
% 3.67/1.27 | (segmentP @ X1 @ X0))),
% 3.67/1.27 inference('demod', [status(thm)], [zip_derived_cl3202, zip_derived_cl7])).
% 3.67/1.27 thf(zip_derived_cl3234, plain,
% 3.67/1.27 (![X0 : $i, X1 : $i, X2 : $i]:
% 3.67/1.27 ( (segmentP @ X1 @ X0)
% 3.67/1.27 | ~ (ssList @ X1)
% 3.67/1.27 | ~ (ssList @ X2)
% 3.67/1.27 | ((app @ X0 @ X2) != (X1))
% 3.67/1.27 | ~ (ssList @ X0))),
% 3.67/1.27 inference('simplify', [status(thm)], [zip_derived_cl3233])).
% 3.67/1.27 thf(zip_derived_cl3281, plain,
% 3.67/1.27 (![X0 : $i]:
% 3.67/1.27 ( (segmentP @ X0 @ sk1)
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ~ (ssList @ sk5)
% 3.67/1.27 | ((sk2) != (X0))
% 3.67/1.27 | ~ (ssList @ sk1))),
% 3.67/1.27 inference('s_sup-', [status(thm)],
% 3.67/1.27 [zip_derived_cl1435, zip_derived_cl3234])).
% 3.67/1.27 thf(co1_7, conjecture, (~( ssList @ sk5 ))).
% 3.67/1.27 thf(zf_stmt_4, negated_conjecture, (ssList @ sk5),
% 3.67/1.27 inference('cnf.neg', [status(esa)], [co1_7])).
% 3.67/1.27 thf(zip_derived_cl191, plain, ( (ssList @ sk5)),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_4])).
% 3.67/1.27 thf(co1_1, conjecture, (~( ssList @ sk1 ))).
% 3.67/1.27 thf(zf_stmt_5, negated_conjecture, (ssList @ sk1),
% 3.67/1.27 inference('cnf.neg', [status(esa)], [co1_1])).
% 3.67/1.27 thf(zip_derived_cl185, plain, ( (ssList @ sk1)),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_5])).
% 3.67/1.27 thf(zip_derived_cl3304, plain,
% 3.67/1.27 (![X0 : $i]: ( (segmentP @ X0 @ sk1) | ~ (ssList @ X0) | ((sk2) != (X0)))),
% 3.67/1.27 inference('demod', [status(thm)],
% 3.67/1.27 [zip_derived_cl3281, zip_derived_cl191, zip_derived_cl185])).
% 3.67/1.27 thf(clause57, axiom, (( ~( ssList @ U ) ) | ( segmentP @ U @ U ))).
% 3.67/1.27 thf(zip_derived_cl56, plain,
% 3.67/1.27 (![X0 : $i]: (~ (ssList @ X0) | (segmentP @ X0 @ X0))),
% 3.67/1.27 inference('cnf', [status(esa)], [clause57])).
% 3.67/1.27 thf(clause100, axiom,
% 3.67/1.27 (( ~( ssList @ U ) ) | ( ~( ssList @ V ) ) | ( neq @ V @ U ) |
% 3.67/1.27 ( ( V ) = ( U ) ))).
% 3.67/1.27 thf(zip_derived_cl99, plain,
% 3.67/1.27 (![X0 : $i, X1 : $i]:
% 3.67/1.27 (~ (ssList @ X0) | ~ (ssList @ X1) | (neq @ X1 @ X0) | ((X1) = (X0)))),
% 3.67/1.27 inference('cnf', [status(esa)], [clause100])).
% 3.67/1.27 thf(co1_13, conjecture,
% 3.67/1.27 (~( ( ~( segmentP @ sk1 @ A ) ) | ( ~( segmentP @ sk2 @ A ) ) |
% 3.67/1.27 ( ~( neq @ A @ nil ) ) | ( ~( ssList @ A ) ) | ( ( nil ) = ( sk2 ) ) ))).
% 3.67/1.27 thf(zf_stmt_6, negated_conjecture,
% 3.67/1.27 (( ~( segmentP @ sk1 @ A ) ) | ( ~( segmentP @ sk2 @ A ) ) |
% 3.67/1.27 ( ~( neq @ A @ nil ) ) | ( ~( ssList @ A ) ) | ( ( nil ) = ( sk2 ) )),
% 3.67/1.27 inference('cnf.neg', [status(esa)], [co1_13])).
% 3.67/1.27 thf(zip_derived_cl197, plain,
% 3.67/1.27 (![X0 : $i]:
% 3.67/1.27 (~ (segmentP @ sk1 @ X0)
% 3.67/1.27 | ~ (segmentP @ sk2 @ X0)
% 3.67/1.27 | ~ (neq @ X0 @ nil)
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ((nil) = (sk2)))),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_6])).
% 3.67/1.27 thf(zip_derived_cl1412, plain,
% 3.67/1.27 (![X0 : $i]:
% 3.67/1.27 (((X0) = (nil))
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ~ (ssList @ nil)
% 3.67/1.27 | ((nil) = (sk2))
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ~ (segmentP @ sk2 @ X0)
% 3.67/1.27 | ~ (segmentP @ sk1 @ X0))),
% 3.67/1.27 inference('dp-resolution', [status(thm)],
% 3.67/1.27 [zip_derived_cl99, zip_derived_cl197])).
% 3.67/1.27 thf(zip_derived_cl1524, plain,
% 3.67/1.27 (![X0 : $i]:
% 3.67/1.27 (~ (segmentP @ sk1 @ X0)
% 3.67/1.27 | ~ (segmentP @ sk2 @ X0)
% 3.67/1.27 | ((nil) = (sk2))
% 3.67/1.27 | ~ (ssList @ nil)
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ((X0) = (nil)))),
% 3.67/1.27 inference('simplify', [status(thm)], [zip_derived_cl1412])).
% 3.67/1.27 thf(zip_derived_cl7, plain, ( (ssList @ nil)),
% 3.67/1.27 inference('cnf', [status(esa)], [clause8])).
% 3.67/1.27 thf(zip_derived_cl1525, plain,
% 3.67/1.27 (![X0 : $i]:
% 3.67/1.27 (~ (segmentP @ sk1 @ X0)
% 3.67/1.27 | ~ (segmentP @ sk2 @ X0)
% 3.67/1.27 | ((nil) = (sk2))
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ((X0) = (nil)))),
% 3.67/1.27 inference('demod', [status(thm)], [zip_derived_cl1524, zip_derived_cl7])).
% 3.67/1.27 thf(zip_derived_cl1435, plain, (((app @ sk1 @ sk5) = (sk2))),
% 3.67/1.27 inference('demod', [status(thm)],
% 3.67/1.27 [zip_derived_cl192, zip_derived_cl190, zip_derived_cl189])).
% 3.67/1.27 thf(clause118, axiom,
% 3.67/1.27 (( ( app @ U @ V ) != ( nil ) ) | ( ~( ssList @ V ) ) |
% 3.67/1.27 ( ~( ssList @ U ) ) | ( ( nil ) = ( U ) ))).
% 3.67/1.27 thf(zip_derived_cl117, plain,
% 3.67/1.27 (![X0 : $i, X1 : $i]:
% 3.67/1.27 (((app @ X0 @ X1) != (nil))
% 3.67/1.27 | ~ (ssList @ X1)
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ((nil) = (X0)))),
% 3.67/1.27 inference('cnf', [status(esa)], [clause118])).
% 3.67/1.27 thf(zip_derived_cl1466, plain,
% 3.67/1.27 ((((sk2) != (nil))
% 3.67/1.27 | ~ (ssList @ sk5)
% 3.67/1.27 | ~ (ssList @ sk1)
% 3.67/1.27 | ((nil) = (sk1)))),
% 3.67/1.27 inference('s_sup-', [status(thm)],
% 3.67/1.27 [zip_derived_cl1435, zip_derived_cl117])).
% 3.67/1.27 thf(zip_derived_cl191, plain, ( (ssList @ sk5)),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_4])).
% 3.67/1.27 thf(zip_derived_cl185, plain, ( (ssList @ sk1)),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_5])).
% 3.67/1.27 thf(zip_derived_cl1471, plain, ((((sk2) != (nil)) | ((nil) = (sk1)))),
% 3.67/1.27 inference('demod', [status(thm)],
% 3.67/1.27 [zip_derived_cl1466, zip_derived_cl191, zip_derived_cl185])).
% 3.67/1.27 thf(co1_14, conjecture, (~( ( neq @ sk2 @ nil ) | ( ( nil ) != ( sk1 ) ) ))).
% 3.67/1.27 thf(zf_stmt_7, negated_conjecture,
% 3.67/1.27 (( neq @ sk2 @ nil ) | ( ( nil ) != ( sk1 ) )),
% 3.67/1.27 inference('cnf.neg', [status(esa)], [co1_14])).
% 3.67/1.27 thf(zip_derived_cl198, plain, (( (neq @ sk2 @ nil) | ((nil) != (sk1)))),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_7])).
% 3.67/1.27 thf(clause115, axiom,
% 3.67/1.27 (( ( U ) != ( V ) ) | ( ~( neq @ U @ V ) ) | ( ~( ssList @ V ) ) |
% 3.67/1.27 ( ~( ssList @ U ) ))).
% 3.67/1.27 thf(zip_derived_cl114, plain,
% 3.67/1.27 (![X0 : $i, X1 : $i]:
% 3.67/1.27 (((X1) != (X0))
% 3.67/1.27 | ~ (neq @ X1 @ X0)
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ~ (ssList @ X1))),
% 3.67/1.27 inference('cnf', [status(esa)], [clause115])).
% 3.67/1.27 thf(zip_derived_cl1426, plain,
% 3.67/1.27 ((((nil) != (sk1))
% 3.67/1.27 | ~ (ssList @ sk2)
% 3.67/1.27 | ~ (ssList @ nil)
% 3.67/1.27 | ((sk2) != (nil)))),
% 3.67/1.27 inference('dp-resolution', [status(thm)],
% 3.67/1.27 [zip_derived_cl198, zip_derived_cl114])).
% 3.67/1.27 thf(co1_2, conjecture, (~( ssList @ sk2 ))).
% 3.67/1.27 thf(zf_stmt_8, negated_conjecture, (ssList @ sk2),
% 3.67/1.27 inference('cnf.neg', [status(esa)], [co1_2])).
% 3.67/1.27 thf(zip_derived_cl186, plain, ( (ssList @ sk2)),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_8])).
% 3.67/1.27 thf(zip_derived_cl7, plain, ( (ssList @ nil)),
% 3.67/1.27 inference('cnf', [status(esa)], [clause8])).
% 3.67/1.27 thf(zip_derived_cl1440, plain, ((((nil) != (sk1)) | ((sk2) != (nil)))),
% 3.67/1.27 inference('demod', [status(thm)],
% 3.67/1.27 [zip_derived_cl1426, zip_derived_cl186, zip_derived_cl7])).
% 3.67/1.27 thf(zip_derived_cl1472, plain, (((sk2) != (nil))),
% 3.67/1.27 inference('clc', [status(thm)], [zip_derived_cl1471, zip_derived_cl1440])).
% 3.67/1.27 thf(zip_derived_cl1526, plain,
% 3.67/1.27 (![X0 : $i]:
% 3.67/1.27 (~ (segmentP @ sk1 @ X0)
% 3.67/1.27 | ~ (segmentP @ sk2 @ X0)
% 3.67/1.27 | ~ (ssList @ X0)
% 3.67/1.27 | ((X0) = (nil)))),
% 3.67/1.27 inference('simplify_reflect-', [status(thm)],
% 3.67/1.27 [zip_derived_cl1525, zip_derived_cl1472])).
% 3.67/1.27 thf(zip_derived_cl1527, plain,
% 3.67/1.27 ((~ (ssList @ sk1)
% 3.67/1.27 | ~ (segmentP @ sk2 @ sk1)
% 3.67/1.27 | ~ (ssList @ sk1)
% 3.67/1.27 | ((sk1) = (nil)))),
% 3.67/1.27 inference('s_sup-', [status(thm)], [zip_derived_cl56, zip_derived_cl1526])).
% 3.67/1.27 thf(zip_derived_cl185, plain, ( (ssList @ sk1)),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_5])).
% 3.67/1.27 thf(zip_derived_cl185, plain, ( (ssList @ sk1)),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_5])).
% 3.67/1.27 thf(zip_derived_cl1529, plain,
% 3.67/1.27 ((~ (segmentP @ sk2 @ sk1) | ((sk1) = (nil)))),
% 3.67/1.27 inference('demod', [status(thm)],
% 3.67/1.27 [zip_derived_cl1527, zip_derived_cl185, zip_derived_cl185])).
% 3.67/1.27 thf(zip_derived_cl3338, plain,
% 3.67/1.27 ((((sk2) != (sk2)) | ~ (ssList @ sk2) | ((sk1) = (nil)))),
% 3.67/1.27 inference('s_sup-', [status(thm)],
% 3.67/1.27 [zip_derived_cl3304, zip_derived_cl1529])).
% 3.67/1.27 thf(zip_derived_cl186, plain, ( (ssList @ sk2)),
% 3.67/1.27 inference('cnf', [status(esa)], [zf_stmt_8])).
% 3.67/1.27 thf(zip_derived_cl3346, plain, ((((sk2) != (sk2)) | ((sk1) = (nil)))),
% 3.67/1.27 inference('demod', [status(thm)], [zip_derived_cl3338, zip_derived_cl186])).
% 3.67/1.27 thf(zip_derived_cl3347, plain, (((sk1) = (nil))),
% 3.67/1.27 inference('simplify', [status(thm)], [zip_derived_cl3346])).
% 3.67/1.27 thf(zip_derived_cl3350, plain, ((((nil) != (nil)) | ((nil) = (sk4)))),
% 3.67/1.27 inference('demod', [status(thm)],
% 3.67/1.27 [zip_derived_cl1434, zip_derived_cl3347])).
% 3.67/1.27 thf(zip_derived_cl3351, plain, (((nil) = (sk4))),
% 3.67/1.27 inference('simplify', [status(thm)], [zip_derived_cl3350])).
% 3.67/1.27 thf(zip_derived_cl3390, plain, (((sk2) = (nil))),
% 3.67/1.27 inference('demod', [status(thm)], [zip_derived_cl189, zip_derived_cl3351])).
% 3.67/1.27 thf(zip_derived_cl1472, plain, (((sk2) != (nil))),
% 3.67/1.27 inference('clc', [status(thm)], [zip_derived_cl1471, zip_derived_cl1440])).
% 3.67/1.27 thf(zip_derived_cl3391, plain, ($false),
% 3.67/1.27 inference('simplify_reflect-', [status(thm)],
% 3.67/1.27 [zip_derived_cl3390, zip_derived_cl1472])).
% 3.67/1.27
% 3.67/1.27 % SZS output end Refutation
% 3.67/1.27
% 3.67/1.27
% 3.67/1.27 % Terminating...
% 4.33/1.47 % Runner terminated.
% 4.35/1.49 % Zipperpin 1.5 exiting
%------------------------------------------------------------------------------