%------------------------------------------------------------------------------
% File : Zipperpin---2.1.9999
% Problem : HEN004-1 : TPTP v9.2.0. 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.VclogqDLAX true
% Computer : n008.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 04:37:20 PM UTC 2025
% Result : Unsatisfiable 0.56s 0.97s
% Output : Refutation 0.56s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.12 % Problem : HEN004-1 : TPTP v9.2.0. Released v1.0.0.
% 0.11/0.13 % Command : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.VclogqDLAX true
% 0.14/0.34 % Computer : n008.cluster.edu
% 0.14/0.34 % Model : x86_64 x86_64
% 0.14/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.34 % Memory : 8042.1875MB
% 0.14/0.34 % OS : Linux 3.10.0-693.el7.x86_64
% 0.14/0.35 % CPULimit : 300
% 0.14/0.35 % WCLimit : 300
% 0.14/0.35 % DateTime : Wed Oct 1 16:54:08 EDT 2025
% 0.14/0.35 % CPUTime :
% 0.14/0.35 % Running portfolio for 300 s
% 0.14/0.35 % File : /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.14/0.35 % Number of cores: 8
% 0.14/0.35 % Python version: Python 3.6.8
% 0.14/0.35 % Running in FO mode
% 0.54/0.64 % Total configuration time : 435
% 0.54/0.64 % Estimated wc time : 1092
% 0.54/0.64 % Estimated cpu time (7 cpus) : 156.0
% 0.54/0.69 % /export/starexec/sandbox/solver/bin/fo/fo6_bce.sh running for 75s
% 0.54/0.69 % /export/starexec/sandbox/solver/bin/fo/fo3_bce.sh running for 75s
% 0.55/0.74 % /export/starexec/sandbox/solver/bin/fo/fo1_av.sh running for 75s
% 0.55/0.74 % /export/starexec/sandbox/solver/bin/fo/fo7.sh running for 63s
% 0.55/0.75 % /export/starexec/sandbox/solver/bin/fo/fo13.sh running for 50s
% 0.55/0.75 % /export/starexec/sandbox/solver/bin/fo/fo5.sh running for 50s
% 0.55/0.76 % /export/starexec/sandbox/solver/bin/fo/fo4.sh running for 50s
% 0.56/0.97 % Solved by fo/fo13.sh.
% 0.56/0.97 % done 505 iterations in 0.202s
% 0.56/0.97 % SZS status Theorem for '/export/starexec/sandbox/benchmark/theBenchmark.p'
% 0.56/0.97 % SZS output start Refutation
% 0.56/0.97 thf(divide_type, type, divide: $i > $i > $i).
% 0.56/0.97 thf(x_type, type, x: $i).
% 0.56/0.97 thf(less_equal_type, type, less_equal: $i > $i > $o).
% 0.56/0.97 thf(quotient_type, type, quotient: $i > $i > $i > $o).
% 0.56/0.97 thf(zero_type, type, zero: $i).
% 0.56/0.97 thf(prove_x_divde_zero_is_x, conjecture, (quotient @ x @ zero @ x)).
% 0.56/0.97 thf(zf_stmt_0, negated_conjecture, (~( quotient @ x @ zero @ x )),
% 0.56/0.97 inference('cnf.neg', [status(esa)], [prove_x_divde_zero_is_x])).
% 0.56/0.97 thf(zip_derived_cl9, plain, (~ (quotient @ x @ zero @ x)),
% 0.56/0.97 inference('cnf', [status(esa)], [zf_stmt_0])).
% 0.56/0.97 thf(closure, axiom, (quotient @ X @ Y @ ( divide @ X @ Y ))).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(zero_is_smallest, axiom, (less_equal @ zero @ X)).
% 0.56/0.97 thf(zip_derived_cl4, plain, (![X0 : $i]: (less_equal @ zero @ X0)),
% 0.56/0.97 inference('cnf', [status(esa)], [zero_is_smallest])).
% 0.56/0.97 thf(quotient_less_equal, axiom,
% 0.56/0.97 (( ~( less_equal @ X @ Y ) ) | ( quotient @ X @ Y @ zero ))).
% 0.56/0.97 thf(zip_derived_cl0, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]:
% 0.56/0.97 (~ (less_equal @ X0 @ X1) | (quotient @ X0 @ X1 @ zero))),
% 0.56/0.97 inference('cnf', [status(esa)], [quotient_less_equal])).
% 0.56/0.97 thf(zip_derived_cl11, plain, (![X0 : $i]: (quotient @ zero @ X0 @ zero)),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl4, zip_derived_cl0])).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(divisor_existence, axiom,
% 0.56/0.97 (( ~( quotient @ X @ Y @ Z ) ) | ( less_equal @ Z @ X ))).
% 0.56/0.97 thf(zip_derived_cl2, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/0.97 (~ (quotient @ X0 @ X1 @ X2) | (less_equal @ X2 @ X0))),
% 0.56/0.97 inference('cnf', [status(esa)], [divisor_existence])).
% 0.56/0.97 thf(zip_derived_cl20, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (less_equal @ (divide @ X1 @ X0) @ X1)),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl7, zip_derived_cl2])).
% 0.56/0.97 thf(zip_derived_cl0, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]:
% 0.56/0.97 (~ (less_equal @ X0 @ X1) | (quotient @ X0 @ X1 @ zero))),
% 0.56/0.97 inference('cnf', [status(esa)], [quotient_less_equal])).
% 0.56/0.97 thf(zip_derived_cl40, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ (divide @ X0 @ X1) @ X0 @ zero)),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl20, zip_derived_cl0])).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(quotient_property, axiom,
% 0.56/0.97 (( ~( quotient @ X @ Y @ V1 ) ) | ( ~( quotient @ Y @ Z @ V2 ) ) |
% 0.56/0.97 ( ~( quotient @ X @ Z @ V3 ) ) | ( ~( quotient @ V3 @ V2 @ V4 ) ) |
% 0.56/0.97 ( ~( quotient @ V1 @ Z @ V5 ) ) | ( less_equal @ V4 @ V5 ))).
% 0.56/0.97 thf(zip_derived_cl3, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i, X6 : $i, X7 : $i]:
% 0.56/0.97 (~ (quotient @ X0 @ X1 @ X2)
% 0.56/0.97 | ~ (quotient @ X1 @ X3 @ X4)
% 0.56/0.97 | ~ (quotient @ X0 @ X3 @ X5)
% 0.56/0.97 | ~ (quotient @ X5 @ X4 @ X6)
% 0.56/0.97 | ~ (quotient @ X2 @ X3 @ X7)
% 0.56/0.97 | (less_equal @ X6 @ X7))),
% 0.56/0.97 inference('cnf', [status(esa)], [quotient_property])).
% 0.56/0.97 thf(zip_derived_cl22, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i, X6 : $i]:
% 0.56/0.97 (~ (quotient @ X0 @ X3 @ X2)
% 0.56/0.97 | ~ (quotient @ X1 @ X3 @ X4)
% 0.56/0.97 | ~ (quotient @ X4 @ X2 @ X5)
% 0.56/0.97 | ~ (quotient @ (divide @ X1 @ X0) @ X3 @ X6)
% 0.56/0.97 | (less_equal @ X5 @ X6))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl7, zip_derived_cl3])).
% 0.56/0.97 thf(zip_derived_cl60, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i]:
% 0.56/0.97 (~ (quotient @ X1 @ X0 @ X2)
% 0.56/0.97 | ~ (quotient @ X0 @ X0 @ X3)
% 0.56/0.97 | ~ (quotient @ X3 @ X2 @ X4)
% 0.56/0.97 | (less_equal @ X4 @ zero))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl40, zip_derived_cl22])).
% 0.56/0.97 thf(zip_derived_cl103, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/0.97 (~ (quotient @ X0 @ X0 @ X1)
% 0.56/0.97 | ~ (quotient @ X1 @ zero @ X2)
% 0.56/0.97 | (less_equal @ X2 @ zero))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl11, zip_derived_cl60])).
% 0.56/0.97 thf(zip_derived_cl109, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]:
% 0.56/0.97 (~ (quotient @ X1 @ X1 @ X0)
% 0.56/0.97 | (less_equal @ (divide @ X0 @ zero) @ zero))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl7, zip_derived_cl103])).
% 0.56/0.97 thf(zip_derived_cl122, plain,
% 0.56/0.97 (![X0 : $i]: (less_equal @ (divide @ (divide @ X0 @ X0) @ zero) @ zero)),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl7, zip_derived_cl109])).
% 0.56/0.97 thf(zip_derived_cl4, plain, (![X0 : $i]: (less_equal @ zero @ X0)),
% 0.56/0.97 inference('cnf', [status(esa)], [zero_is_smallest])).
% 0.56/0.97 thf(less_equal_and_equal, axiom,
% 0.56/0.97 (( ~( less_equal @ X @ Y ) ) | ( ~( less_equal @ Y @ X ) ) |
% 0.56/0.97 ( ( X ) = ( Y ) ))).
% 0.56/0.97 thf(zip_derived_cl5, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]:
% 0.56/0.97 (~ (less_equal @ X0 @ X1) | ~ (less_equal @ X1 @ X0) | ((X0) = (X1)))),
% 0.56/0.97 inference('cnf', [status(esa)], [less_equal_and_equal])).
% 0.56/0.97 thf(zip_derived_cl15, plain,
% 0.56/0.97 (![X0 : $i]: (~ (less_equal @ X0 @ zero) | ((zero) = (X0)))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl4, zip_derived_cl5])).
% 0.56/0.97 thf(zip_derived_cl133, plain,
% 0.56/0.97 (![X0 : $i]: ((zero) = (divide @ (divide @ X0 @ X0) @ zero))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl122, zip_derived_cl15])).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(zip_derived_cl141, plain,
% 0.56/0.97 (![X0 : $i]: (quotient @ (divide @ X0 @ X0) @ zero @ zero)),
% 0.56/0.97 inference('s_sup+', [status(thm)], [zip_derived_cl133, zip_derived_cl7])).
% 0.56/0.97 thf(less_equal_quotient, axiom,
% 0.56/0.97 (( ~( quotient @ X @ Y @ zero ) ) | ( less_equal @ X @ Y ))).
% 0.56/0.97 thf(zip_derived_cl1, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]:
% 0.56/0.97 (~ (quotient @ X0 @ X1 @ zero) | (less_equal @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [less_equal_quotient])).
% 0.56/0.97 thf(zip_derived_cl181, plain,
% 0.56/0.97 (![X0 : $i]: (less_equal @ (divide @ X0 @ X0) @ zero)),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl141, zip_derived_cl1])).
% 0.56/0.97 thf(zip_derived_cl15, plain,
% 0.56/0.97 (![X0 : $i]: (~ (less_equal @ X0 @ zero) | ((zero) = (X0)))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl4, zip_derived_cl5])).
% 0.56/0.97 thf(zip_derived_cl191, plain, (![X0 : $i]: ((zero) = (divide @ X0 @ X0))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl181, zip_derived_cl15])).
% 0.56/0.97 thf(zip_derived_cl11, plain, (![X0 : $i]: (quotient @ zero @ X0 @ zero)),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl4, zip_derived_cl0])).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(zip_derived_cl22, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i, X6 : $i]:
% 0.56/0.97 (~ (quotient @ X0 @ X3 @ X2)
% 0.56/0.97 | ~ (quotient @ X1 @ X3 @ X4)
% 0.56/0.97 | ~ (quotient @ X4 @ X2 @ X5)
% 0.56/0.97 | ~ (quotient @ (divide @ X1 @ X0) @ X3 @ X6)
% 0.56/0.97 | (less_equal @ X5 @ X6))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl7, zip_derived_cl3])).
% 0.56/0.97 thf(zip_derived_cl58, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i, X4 : $i, X5 : $i]:
% 0.56/0.97 (~ (quotient @ X1 @ X0 @ X3)
% 0.56/0.97 | ~ (quotient @ X2 @ X0 @ X4)
% 0.56/0.97 | ~ (quotient @ X4 @ X3 @ X5)
% 0.56/0.97 | (less_equal @ X5 @ (divide @ (divide @ X2 @ X1) @ X0)))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl7, zip_derived_cl22])).
% 0.56/0.97 thf(zip_derived_cl157, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i, X2 : $i, X3 : $i]:
% 0.56/0.97 (~ (quotient @ X2 @ X0 @ X1)
% 0.56/0.97 | ~ (quotient @ X1 @ zero @ X3)
% 0.56/0.97 | (less_equal @ X3 @ (divide @ (divide @ X2 @ zero) @ X0)))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl11, zip_derived_cl58])).
% 0.56/0.97 thf(zip_derived_cl428, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i, X2 : $i]:
% 0.56/0.97 (~ (quotient @ X0 @ (divide @ X0 @ zero) @ X2)
% 0.56/0.97 | ~ (quotient @ X2 @ zero @ X1)
% 0.56/0.97 | (less_equal @ X1 @ zero))),
% 0.56/0.97 inference('s_sup+', [status(thm)], [zip_derived_cl191, zip_derived_cl157])).
% 0.56/0.97 thf(zip_derived_cl448, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]:
% 0.56/0.97 (~ (quotient @ X1 @ (divide @ X1 @ zero) @ X0)
% 0.56/0.97 | (less_equal @ (divide @ X0 @ zero) @ zero))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl7, zip_derived_cl428])).
% 0.56/0.97 thf(zip_derived_cl841, plain,
% 0.56/0.97 (![X0 : $i]:
% 0.56/0.97 (less_equal @
% 0.56/0.97 (divide @ (divide @ X0 @ (divide @ X0 @ zero)) @ zero) @ zero)),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl7, zip_derived_cl448])).
% 0.56/0.97 thf(zip_derived_cl15, plain,
% 0.56/0.97 (![X0 : $i]: (~ (less_equal @ X0 @ zero) | ((zero) = (X0)))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl4, zip_derived_cl5])).
% 0.56/0.97 thf(zip_derived_cl858, plain,
% 0.56/0.97 (![X0 : $i]:
% 0.56/0.97 ((zero) = (divide @ (divide @ X0 @ (divide @ X0 @ zero)) @ zero))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl841, zip_derived_cl15])).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(zip_derived_cl895, plain,
% 0.56/0.97 (![X0 : $i]:
% 0.56/0.97 (quotient @ (divide @ X0 @ (divide @ X0 @ zero)) @ zero @ zero)),
% 0.56/0.97 inference('s_sup+', [status(thm)], [zip_derived_cl858, zip_derived_cl7])).
% 0.56/0.97 thf(zip_derived_cl1, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]:
% 0.56/0.97 (~ (quotient @ X0 @ X1 @ zero) | (less_equal @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [less_equal_quotient])).
% 0.56/0.97 thf(zip_derived_cl971, plain,
% 0.56/0.97 (![X0 : $i]: (less_equal @ (divide @ X0 @ (divide @ X0 @ zero)) @ zero)),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl895, zip_derived_cl1])).
% 0.56/0.97 thf(zip_derived_cl15, plain,
% 0.56/0.97 (![X0 : $i]: (~ (less_equal @ X0 @ zero) | ((zero) = (X0)))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl4, zip_derived_cl5])).
% 0.56/0.97 thf(zip_derived_cl1042, plain,
% 0.56/0.97 (![X0 : $i]: ((zero) = (divide @ X0 @ (divide @ X0 @ zero)))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl971, zip_derived_cl15])).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(zip_derived_cl1060, plain,
% 0.56/0.97 (![X0 : $i]: (quotient @ X0 @ (divide @ X0 @ zero) @ zero)),
% 0.56/0.97 inference('s_sup+', [status(thm)], [zip_derived_cl1042, zip_derived_cl7])).
% 0.56/0.97 thf(zip_derived_cl1, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]:
% 0.56/0.97 (~ (quotient @ X0 @ X1 @ zero) | (less_equal @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [less_equal_quotient])).
% 0.56/0.97 thf(zip_derived_cl1161, plain,
% 0.56/0.97 (![X0 : $i]: (less_equal @ X0 @ (divide @ X0 @ zero))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl1060, zip_derived_cl1])).
% 0.56/0.97 thf(zip_derived_cl20, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (less_equal @ (divide @ X1 @ X0) @ X1)),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl7, zip_derived_cl2])).
% 0.56/0.97 thf(zip_derived_cl5, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]:
% 0.56/0.97 (~ (less_equal @ X0 @ X1) | ~ (less_equal @ X1 @ X0) | ((X0) = (X1)))),
% 0.56/0.97 inference('cnf', [status(esa)], [less_equal_and_equal])).
% 0.56/0.97 thf(zip_derived_cl41, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]:
% 0.56/0.97 (~ (less_equal @ X0 @ (divide @ X0 @ X1))
% 0.56/0.97 | ((divide @ X0 @ X1) = (X0)))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl20, zip_derived_cl5])).
% 0.56/0.97 thf(zip_derived_cl1208, plain, (![X0 : $i]: ((divide @ X0 @ zero) = (X0))),
% 0.56/0.97 inference('s_sup-', [status(thm)], [zip_derived_cl1161, zip_derived_cl41])).
% 0.56/0.97 thf(zip_derived_cl7, plain,
% 0.56/0.97 (![X0 : $i, X1 : $i]: (quotient @ X0 @ X1 @ (divide @ X0 @ X1))),
% 0.56/0.97 inference('cnf', [status(esa)], [closure])).
% 0.56/0.97 thf(zip_derived_cl1227, plain, (![X0 : $i]: (quotient @ X0 @ zero @ X0)),
% 0.56/0.97 inference('s_sup+', [status(thm)], [zip_derived_cl1208, zip_derived_cl7])).
% 0.56/0.97 thf(zip_derived_cl1269, plain, ($false),
% 0.56/0.97 inference('demod', [status(thm)], [zip_derived_cl9, zip_derived_cl1227])).
% 0.56/0.97
% 0.56/0.97 % SZS output end Refutation
% 0.56/0.97
% 0.56/0.97
% 0.56/0.97 % Terminating...
% 0.60/1.04 % Runner terminated.
% 0.60/1.05 % Zipperpin 1.5 exiting
%------------------------------------------------------------------------------