TSTP Solution File: SET212-6 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : SET212-6 : TPTP v8.1.0. Bugfixed v2.1.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n020.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 : Tue Sep 20 05:06:11 EDT 2022

% Result   : Unsatisfiable 0.97s 0.88s
% Output   : Proof 0.97s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : SET212-6 : TPTP v8.1.0. Bugfixed v2.1.0.
% 0.07/0.13  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.13/0.34  % Computer : n020.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 : Sat Sep  3 03:27:44 EDT 2022
% 0.13/0.34  % CPUTime  : 
% 0.13/0.35  Z3tptp [4.8.9.0] (c) 2006-20**. Microsoft Corp.
% 0.13/0.35  Usage: tptp [options] [-file:]file
% 0.13/0.35    -h, -?       prints this message.
% 0.13/0.35    -smt2        print SMT-LIB2 benchmark.
% 0.13/0.35    -m, -model   generate model.
% 0.13/0.35    -p, -proof   generate proof.
% 0.13/0.35    -c, -core    generate unsat core of named formulas.
% 0.13/0.35    -st, -statistics display statistics.
% 0.13/0.35    -t:timeout   set timeout (in second).
% 0.13/0.35    -smt2status  display status in smt2 format instead of SZS.
% 0.13/0.35    -check_status check the status produced by Z3 against annotation in benchmark.
% 0.13/0.35    -<param>:<value> configuration parameter and value.
% 0.13/0.35    -o:<output-file> file to place output in.
% 0.97/0.88  % SZS status Unsatisfiable
% 0.97/0.88  % SZS output start Proof
% 0.97/0.88  tff(member_type, type, (
% 0.97/0.88     member: ( $i * $i ) > $o)).
% 0.97/0.88  tff(complement_type, type, (
% 0.97/0.88     complement: $i > $i)).
% 0.97/0.88  tff(y_type, type, (
% 0.97/0.88     y: $i)).
% 0.97/0.88  tff(second_type, type, (
% 0.97/0.88     second: $i > $i)).
% 0.97/0.88  tff(not_subclass_element_type, type, (
% 0.97/0.88     not_subclass_element: ( $i * $i ) > $i)).
% 0.97/0.88  tff(cross_product_type, type, (
% 0.97/0.88     cross_product: ( $i * $i ) > $i)).
% 0.97/0.88  tff(union_type, type, (
% 0.97/0.88     union: ( $i * $i ) > $i)).
% 0.97/0.88  tff(z_type, type, (
% 0.97/0.88     z: $i)).
% 0.97/0.88  tff(x_type, type, (
% 0.97/0.88     x: $i)).
% 0.97/0.88  tff(intersection_type, type, (
% 0.97/0.88     intersection: ( $i * $i ) > $i)).
% 0.97/0.88  tff(universal_class_type, type, (
% 0.97/0.88     universal_class: $i)).
% 0.97/0.88  tff(subclass_type, type, (
% 0.97/0.88     subclass: ( $i * $i ) > $o)).
% 0.97/0.88  tff(ordered_pair_type, type, (
% 0.97/0.88     ordered_pair: ( $i * $i ) > $i)).
% 0.97/0.88  tff(first_type, type, (
% 0.97/0.88     first: $i > $i)).
% 0.97/0.88  tff(1,assumption,(~subclass(y, universal_class)), introduced(assumption)).
% 0.97/0.88  tff(2,plain,
% 0.97/0.88      (^[X: $i] : refl(subclass(X, universal_class) <=> subclass(X, universal_class))),
% 0.97/0.88      inference(bind,[status(th)],[])).
% 0.97/0.88  tff(3,plain,
% 0.97/0.88      (![X: $i] : subclass(X, universal_class) <=> ![X: $i] : subclass(X, universal_class)),
% 0.97/0.88      inference(quant_intro,[status(thm)],[2])).
% 0.97/0.88  tff(4,plain,
% 0.97/0.88      (![X: $i] : subclass(X, universal_class) <=> ![X: $i] : subclass(X, universal_class)),
% 0.97/0.88      inference(rewrite,[status(thm)],[])).
% 0.97/0.88  tff(5,axiom,(![X: $i] : subclass(X, universal_class)), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','class_elements_are_sets')).
% 0.97/0.88  tff(6,plain,
% 0.97/0.88      (![X: $i] : subclass(X, universal_class)),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[5, 4])).
% 0.97/0.88  tff(7,plain,(
% 0.97/0.88      ![X: $i] : subclass(X, universal_class)),
% 0.97/0.88      inference(skolemize,[status(sab)],[6])).
% 0.97/0.88  tff(8,plain,
% 0.97/0.88      (![X: $i] : subclass(X, universal_class)),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[7, 3])).
% 0.97/0.88  tff(9,plain,
% 0.97/0.88      ((~![X: $i] : subclass(X, universal_class)) | subclass(y, universal_class)),
% 0.97/0.88      inference(quant_inst,[status(thm)],[])).
% 0.97/0.88  tff(10,plain,
% 0.97/0.88      ($false),
% 0.97/0.88      inference(unit_resolution,[status(thm)],[9, 8, 1])).
% 0.97/0.88  tff(11,plain,(subclass(y, universal_class)), inference(lemma,lemma(discharge,[]))).
% 0.97/0.88  tff(12,assumption,(~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class)), introduced(assumption)).
% 0.97/0.88  tff(13,plain,
% 0.97/0.88      ((~subclass(cross_product(x, y), cross_product(x, union(y, z)))) <=> (~subclass(cross_product(x, y), cross_product(x, union(y, z))))),
% 0.97/0.88      inference(rewrite,[status(thm)],[])).
% 0.97/0.88  tff(14,axiom,(~subclass(cross_product(x, y), cross_product(x, union(y, z)))), file('/export/starexec/sandbox/benchmark/theBenchmark.p','prove_corollary_3_to_X_product_monotonicity_1')).
% 0.97/0.88  tff(15,plain,
% 0.97/0.88      (~subclass(cross_product(x, y), cross_product(x, union(y, z)))),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[14, 13])).
% 0.97/0.88  tff(16,plain,
% 0.97/0.88      (^[Y: $i, X: $i] : refl((subclass(X, Y) | member(not_subclass_element(X, Y), X)) <=> (subclass(X, Y) | member(not_subclass_element(X, Y), X)))),
% 0.97/0.88      inference(bind,[status(th)],[])).
% 0.97/0.88  tff(17,plain,
% 0.97/0.88      (![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X)) <=> ![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))),
% 0.97/0.88      inference(quant_intro,[status(thm)],[16])).
% 0.97/0.88  tff(18,plain,
% 0.97/0.88      (![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X)) <=> ![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))),
% 0.97/0.88      inference(rewrite,[status(thm)],[])).
% 0.97/0.88  tff(19,plain,
% 0.97/0.88      (^[Y: $i, X: $i] : rewrite((member(not_subclass_element(X, Y), X) | subclass(X, Y)) <=> (subclass(X, Y) | member(not_subclass_element(X, Y), X)))),
% 0.97/0.88      inference(bind,[status(th)],[])).
% 0.97/0.88  tff(20,plain,
% 0.97/0.88      (![Y: $i, X: $i] : (member(not_subclass_element(X, Y), X) | subclass(X, Y)) <=> ![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))),
% 0.97/0.88      inference(quant_intro,[status(thm)],[19])).
% 0.97/0.88  tff(21,axiom,(![Y: $i, X: $i] : (member(not_subclass_element(X, Y), X) | subclass(X, Y))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','not_subclass_members1')).
% 0.97/0.88  tff(22,plain,
% 0.97/0.88      (![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[21, 20])).
% 0.97/0.88  tff(23,plain,
% 0.97/0.88      (![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[22, 18])).
% 0.97/0.88  tff(24,plain,(
% 0.97/0.88      ![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))),
% 0.97/0.88      inference(skolemize,[status(sab)],[23])).
% 0.97/0.88  tff(25,plain,
% 0.97/0.88      (![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[24, 17])).
% 0.97/0.88  tff(26,plain,
% 0.97/0.88      (((~![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))) | (subclass(cross_product(x, y), cross_product(x, union(y, z))) | member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y)))) <=> ((~![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))) | subclass(cross_product(x, y), cross_product(x, union(y, z))) | member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y)))),
% 0.97/0.88      inference(rewrite,[status(thm)],[])).
% 0.97/0.88  tff(27,plain,
% 0.97/0.88      ((~![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))) | (subclass(cross_product(x, y), cross_product(x, union(y, z))) | member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y)))),
% 0.97/0.88      inference(quant_inst,[status(thm)],[])).
% 0.97/0.88  tff(28,plain,
% 0.97/0.88      ((~![Y: $i, X: $i] : (subclass(X, Y) | member(not_subclass_element(X, Y), X))) | subclass(cross_product(x, y), cross_product(x, union(y, z))) | member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y))),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[27, 26])).
% 0.97/0.88  tff(29,plain,
% 0.97/0.88      (member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y))),
% 0.97/0.88      inference(unit_resolution,[status(thm)],[28, 25, 15])).
% 0.97/0.88  tff(30,plain,
% 0.97/0.88      (^[Z: $i, Y: $i, X: $i] : refl(((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z)) <=> ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z)))),
% 0.97/0.88      inference(bind,[status(th)],[])).
% 0.97/0.88  tff(31,plain,
% 0.97/0.88      (![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z)) <=> ![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z))),
% 0.97/0.88      inference(quant_intro,[status(thm)],[30])).
% 0.97/0.88  tff(32,plain,
% 0.97/0.88      (![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z)) <=> ![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z))),
% 0.97/0.88      inference(rewrite,[status(thm)],[])).
% 0.97/0.88  tff(33,axiom,(![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','cartesian_product4')).
% 0.97/0.88  tff(34,plain,
% 0.97/0.88      (![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z))),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[33, 32])).
% 0.97/0.88  tff(35,plain,(
% 0.97/0.88      ![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z))),
% 0.97/0.88      inference(skolemize,[status(sab)],[34])).
% 0.97/0.88  tff(36,plain,
% 0.97/0.88      (![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z))),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[35, 31])).
% 0.97/0.88  tff(37,plain,
% 0.97/0.88      (((~![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z))) | ((~member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y))) | (ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))) = not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))))) <=> ((~![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z))) | (~member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y))) | (ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))) = not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))))),
% 0.97/0.88      inference(rewrite,[status(thm)],[])).
% 0.97/0.88  tff(38,plain,
% 0.97/0.88      ((~![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z))) | ((~member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y))) | (ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))) = not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))))),
% 0.97/0.88      inference(quant_inst,[status(thm)],[])).
% 0.97/0.88  tff(39,plain,
% 0.97/0.88      ((~![Z: $i, Y: $i, X: $i] : ((~member(Z, cross_product(X, Y))) | (ordered_pair(first(Z), second(Z)) = Z))) | (~member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y))) | (ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))) = not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[38, 37])).
% 0.97/0.88  tff(40,plain,
% 0.97/0.88      (ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))) = not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))),
% 0.97/0.88      inference(unit_resolution,[status(thm)],[39, 36, 29])).
% 0.97/0.88  tff(41,plain,
% 0.97/0.88      (member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y)) <=> member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y))),
% 0.97/0.88      inference(monotonicity,[status(thm)],[40])).
% 0.97/0.88  tff(42,plain,
% 0.97/0.88      (member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, y)) <=> member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))),
% 0.97/0.88      inference(symmetry,[status(thm)],[41])).
% 0.97/0.88  tff(43,plain,
% 0.97/0.88      (member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[29, 42])).
% 0.97/0.88  tff(44,plain,
% 0.97/0.88      (^[V: $i, Y: $i, U: $i, X: $i] : refl(((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y)) <=> ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y)))),
% 0.97/0.88      inference(bind,[status(th)],[])).
% 0.97/0.88  tff(45,plain,
% 0.97/0.88      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y)) <=> ![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y))),
% 0.97/0.88      inference(quant_intro,[status(thm)],[44])).
% 0.97/0.88  tff(46,plain,
% 0.97/0.88      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y)) <=> ![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y))),
% 0.97/0.88      inference(rewrite,[status(thm)],[])).
% 0.97/0.88  tff(47,axiom,(![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','cartesian_product2')).
% 0.97/0.88  tff(48,plain,
% 0.97/0.88      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y))),
% 0.97/0.88      inference(modus_ponens,[status(thm)],[47, 46])).
% 0.97/0.88  tff(49,plain,(
% 0.97/0.88      ![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y))),
% 0.97/0.88      inference(skolemize,[status(sab)],[48])).
% 0.97/0.89  tff(50,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[49, 45])).
% 0.97/0.89  tff(51,plain,
% 0.97/0.89      (((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y))) | ((~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y))) <=> ((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y))) | (~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(52,plain,
% 0.97/0.89      ((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y))) | ((~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y))),
% 0.97/0.89      inference(quant_inst,[status(thm)],[])).
% 0.97/0.89  tff(53,plain,
% 0.97/0.89      ((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(V, Y))) | (~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[52, 51])).
% 0.97/0.89  tff(54,plain,
% 0.97/0.89      ((~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)),
% 0.97/0.89      inference(unit_resolution,[status(thm)],[53, 50])).
% 0.97/0.89  tff(55,plain,
% 0.97/0.89      (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)),
% 0.97/0.89      inference(unit_resolution,[status(thm)],[54, 43])).
% 0.97/0.89  tff(56,plain,
% 0.97/0.89      (^[Y: $i, U: $i, X: $i] : refl((member(U, Y) | (~member(U, X)) | (~subclass(X, Y))) <=> (member(U, Y) | (~member(U, X)) | (~subclass(X, Y))))),
% 0.97/0.89      inference(bind,[status(th)],[])).
% 0.97/0.89  tff(57,plain,
% 0.97/0.89      (![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y))) <=> ![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))),
% 0.97/0.89      inference(quant_intro,[status(thm)],[56])).
% 0.97/0.89  tff(58,plain,
% 0.97/0.89      (![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y))) <=> ![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(59,plain,
% 0.97/0.89      (^[Y: $i, U: $i, X: $i] : trans(monotonicity(rewrite(((~subclass(X, Y)) | (~member(U, X))) <=> ((~member(U, X)) | (~subclass(X, Y)))), ((((~subclass(X, Y)) | (~member(U, X))) | member(U, Y)) <=> (((~member(U, X)) | (~subclass(X, Y))) | member(U, Y)))), rewrite((((~member(U, X)) | (~subclass(X, Y))) | member(U, Y)) <=> (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))), ((((~subclass(X, Y)) | (~member(U, X))) | member(U, Y)) <=> (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))))),
% 0.97/0.89      inference(bind,[status(th)],[])).
% 0.97/0.89  tff(60,plain,
% 0.97/0.89      (![Y: $i, U: $i, X: $i] : (((~subclass(X, Y)) | (~member(U, X))) | member(U, Y)) <=> ![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))),
% 0.97/0.89      inference(quant_intro,[status(thm)],[59])).
% 0.97/0.89  tff(61,axiom,(![Y: $i, U: $i, X: $i] : (((~subclass(X, Y)) | (~member(U, X))) | member(U, Y))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','subclass_members')).
% 0.97/0.89  tff(62,plain,
% 0.97/0.89      (![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[61, 60])).
% 0.97/0.89  tff(63,plain,
% 0.97/0.89      (![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[62, 58])).
% 0.97/0.89  tff(64,plain,(
% 0.97/0.89      ![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))),
% 0.97/0.89      inference(skolemize,[status(sab)],[63])).
% 0.97/0.89  tff(65,plain,
% 0.97/0.89      (![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[64, 57])).
% 0.97/0.89  tff(66,plain,
% 0.97/0.89      (((~![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))) | ((~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class) | (~subclass(y, universal_class)))) <=> ((~![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class) | (~subclass(y, universal_class)))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(67,plain,
% 0.97/0.89      ((member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | (~subclass(y, universal_class))) <=> ((~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class) | (~subclass(y, universal_class)))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(68,plain,
% 0.97/0.89      (((~![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))) | (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | (~subclass(y, universal_class)))) <=> ((~![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))) | ((~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class) | (~subclass(y, universal_class))))),
% 0.97/0.89      inference(monotonicity,[status(thm)],[67])).
% 0.97/0.89  tff(69,plain,
% 0.97/0.89      (((~![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))) | (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | (~subclass(y, universal_class)))) <=> ((~![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class) | (~subclass(y, universal_class)))),
% 0.97/0.89      inference(transitivity,[status(thm)],[68, 66])).
% 0.97/0.89  tff(70,plain,
% 0.97/0.89      ((~![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))) | (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | (~subclass(y, universal_class)))),
% 0.97/0.89      inference(quant_inst,[status(thm)],[])).
% 0.97/0.89  tff(71,plain,
% 0.97/0.89      ((~![Y: $i, U: $i, X: $i] : (member(U, Y) | (~member(U, X)) | (~subclass(X, Y)))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class) | (~subclass(y, universal_class))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[70, 69])).
% 0.97/0.89  tff(72,plain,
% 0.97/0.89      ($false),
% 0.97/0.89      inference(unit_resolution,[status(thm)],[71, 65, 55, 12, 11])).
% 0.97/0.89  tff(73,plain,(member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class)), inference(lemma,lemma(discharge,[]))).
% 0.97/0.89  tff(74,plain,
% 0.97/0.89      (^[Y: $i, X: $i] : refl((complement(intersection(complement(X), complement(Y))) = union(X, Y)) <=> (complement(intersection(complement(X), complement(Y))) = union(X, Y)))),
% 0.97/0.89      inference(bind,[status(th)],[])).
% 0.97/0.89  tff(75,plain,
% 0.97/0.89      (![Y: $i, X: $i] : (complement(intersection(complement(X), complement(Y))) = union(X, Y)) <=> ![Y: $i, X: $i] : (complement(intersection(complement(X), complement(Y))) = union(X, Y))),
% 0.97/0.89      inference(quant_intro,[status(thm)],[74])).
% 0.97/0.89  tff(76,plain,
% 0.97/0.89      (![Y: $i, X: $i] : (complement(intersection(complement(X), complement(Y))) = union(X, Y)) <=> ![Y: $i, X: $i] : (complement(intersection(complement(X), complement(Y))) = union(X, Y))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(77,axiom,(![Y: $i, X: $i] : (complement(intersection(complement(X), complement(Y))) = union(X, Y))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','union')).
% 0.97/0.89  tff(78,plain,
% 0.97/0.89      (![Y: $i, X: $i] : (complement(intersection(complement(X), complement(Y))) = union(X, Y))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[77, 76])).
% 0.97/0.89  tff(79,plain,(
% 0.97/0.89      ![Y: $i, X: $i] : (complement(intersection(complement(X), complement(Y))) = union(X, Y))),
% 0.97/0.89      inference(skolemize,[status(sab)],[78])).
% 0.97/0.89  tff(80,plain,
% 0.97/0.89      (![Y: $i, X: $i] : (complement(intersection(complement(X), complement(Y))) = union(X, Y))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[79, 75])).
% 0.97/0.89  tff(81,plain,
% 0.97/0.89      ((~![Y: $i, X: $i] : (complement(intersection(complement(X), complement(Y))) = union(X, Y))) | (complement(intersection(complement(y), complement(z))) = union(y, z))),
% 0.97/0.89      inference(quant_inst,[status(thm)],[])).
% 0.97/0.89  tff(82,plain,
% 0.97/0.89      (complement(intersection(complement(y), complement(z))) = union(y, z)),
% 0.97/0.89      inference(unit_resolution,[status(thm)],[81, 80])).
% 0.97/0.89  tff(83,plain,
% 0.97/0.89      (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(intersection(complement(y), complement(z)))) <=> member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), union(y, z))),
% 0.97/0.89      inference(monotonicity,[status(thm)],[82])).
% 0.97/0.89  tff(84,plain,
% 0.97/0.89      (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), union(y, z)) <=> member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(intersection(complement(y), complement(z))))),
% 0.97/0.89      inference(symmetry,[status(thm)],[83])).
% 0.97/0.89  tff(85,plain,
% 0.97/0.89      ((~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), union(y, z))) <=> (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(intersection(complement(y), complement(z)))))),
% 0.97/0.89      inference(monotonicity,[status(thm)],[84])).
% 0.97/0.89  tff(86,plain,
% 0.97/0.89      (member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, union(y, z))) <=> member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, union(y, z)))),
% 0.97/0.89      inference(monotonicity,[status(thm)],[40])).
% 0.97/0.89  tff(87,plain,
% 0.97/0.89      (member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, union(y, z))) <=> member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, union(y, z)))),
% 0.97/0.89      inference(symmetry,[status(thm)],[86])).
% 0.97/0.89  tff(88,plain,
% 0.97/0.89      ((~member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, union(y, z)))) <=> (~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, union(y, z))))),
% 0.97/0.89      inference(monotonicity,[status(thm)],[87])).
% 0.97/0.89  tff(89,plain,
% 0.97/0.89      (^[Y: $i, X: $i] : refl(((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y)) <=> ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y)))),
% 0.97/0.89      inference(bind,[status(th)],[])).
% 0.97/0.89  tff(90,plain,
% 0.97/0.89      (![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y)) <=> ![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y))),
% 0.97/0.89      inference(quant_intro,[status(thm)],[89])).
% 0.97/0.89  tff(91,plain,
% 0.97/0.89      (![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y)) <=> ![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(92,axiom,(![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','not_subclass_members2')).
% 0.97/0.89  tff(93,plain,
% 0.97/0.89      (![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[92, 91])).
% 0.97/0.89  tff(94,plain,(
% 0.97/0.89      ![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y))),
% 0.97/0.89      inference(skolemize,[status(sab)],[93])).
% 0.97/0.89  tff(95,plain,
% 0.97/0.89      (![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[94, 90])).
% 0.97/0.89  tff(96,plain,
% 0.97/0.89      (((~![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y))) | ((~member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, union(y, z)))) | subclass(cross_product(x, y), cross_product(x, union(y, z))))) <=> ((~![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y))) | (~member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, union(y, z)))) | subclass(cross_product(x, y), cross_product(x, union(y, z))))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(97,plain,
% 0.97/0.89      ((~![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y))) | ((~member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, union(y, z)))) | subclass(cross_product(x, y), cross_product(x, union(y, z))))),
% 0.97/0.89      inference(quant_inst,[status(thm)],[])).
% 0.97/0.89  tff(98,plain,
% 0.97/0.89      ((~![Y: $i, X: $i] : ((~member(not_subclass_element(X, Y), Y)) | subclass(X, Y))) | (~member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, union(y, z)))) | subclass(cross_product(x, y), cross_product(x, union(y, z)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[97, 96])).
% 0.97/0.89  tff(99,plain,
% 0.97/0.89      (~member(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))), cross_product(x, union(y, z)))),
% 0.97/0.89      inference(unit_resolution,[status(thm)],[98, 95, 15])).
% 0.97/0.89  tff(100,plain,
% 0.97/0.89      (~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, union(y, z)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[99, 88])).
% 0.97/0.89  tff(101,plain,
% 0.97/0.89      (^[V: $i, Y: $i, U: $i, X: $i] : refl(((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X)) <=> ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X)))),
% 0.97/0.89      inference(bind,[status(th)],[])).
% 0.97/0.89  tff(102,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X)) <=> ![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X))),
% 0.97/0.89      inference(quant_intro,[status(thm)],[101])).
% 0.97/0.89  tff(103,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X)) <=> ![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(104,axiom,(![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','cartesian_product1')).
% 0.97/0.89  tff(105,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[104, 103])).
% 0.97/0.89  tff(106,plain,(
% 0.97/0.89      ![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X))),
% 0.97/0.89      inference(skolemize,[status(sab)],[105])).
% 0.97/0.89  tff(107,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[106, 102])).
% 0.97/0.89  tff(108,plain,
% 0.97/0.89      (((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X))) | ((~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))) | member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x))) <=> ((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X))) | (~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))) | member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(109,plain,
% 0.97/0.89      ((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X))) | ((~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))) | member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x))),
% 0.97/0.89      inference(quant_inst,[status(thm)],[])).
% 0.97/0.89  tff(110,plain,
% 0.97/0.89      ((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(ordered_pair(U, V), cross_product(X, Y))) | member(U, X))) | (~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))) | member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x)),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[109, 108])).
% 0.97/0.89  tff(111,plain,
% 0.97/0.89      ((~member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, y))) | member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x)),
% 0.97/0.89      inference(unit_resolution,[status(thm)],[110, 107])).
% 0.97/0.89  tff(112,plain,
% 0.97/0.89      (member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x)),
% 0.97/0.89      inference(unit_resolution,[status(thm)],[111, 43])).
% 0.97/0.89  tff(113,plain,
% 0.97/0.89      (^[V: $i, Y: $i, U: $i, X: $i] : refl(((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y))) <=> ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y))))),
% 0.97/0.89      inference(bind,[status(th)],[])).
% 0.97/0.89  tff(114,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y))) <=> ![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))),
% 0.97/0.89      inference(quant_intro,[status(thm)],[113])).
% 0.97/0.89  tff(115,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y))) <=> ![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(116,plain,
% 0.97/0.89      (^[V: $i, Y: $i, U: $i, X: $i] : rewrite((((~member(U, X)) | (~member(V, Y))) | member(ordered_pair(U, V), cross_product(X, Y))) <=> ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y))))),
% 0.97/0.89      inference(bind,[status(th)],[])).
% 0.97/0.89  tff(117,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : (((~member(U, X)) | (~member(V, Y))) | member(ordered_pair(U, V), cross_product(X, Y))) <=> ![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))),
% 0.97/0.89      inference(quant_intro,[status(thm)],[116])).
% 0.97/0.89  tff(118,axiom,(![V: $i, Y: $i, U: $i, X: $i] : (((~member(U, X)) | (~member(V, Y))) | member(ordered_pair(U, V), cross_product(X, Y)))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','cartesian_product3')).
% 0.97/0.89  tff(119,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[118, 117])).
% 0.97/0.89  tff(120,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[119, 115])).
% 0.97/0.89  tff(121,plain,(
% 0.97/0.89      ![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))),
% 0.97/0.89      inference(skolemize,[status(sab)],[120])).
% 0.97/0.89  tff(122,plain,
% 0.97/0.89      (![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[121, 114])).
% 0.97/0.89  tff(123,plain,
% 0.97/0.89      (((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))) | ((~member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x)) | member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, union(y, z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), union(y, z))))) <=> ((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))) | (~member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x)) | member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, union(y, z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), union(y, z))))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(124,plain,
% 0.97/0.89      ((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))) | ((~member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x)) | member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, union(y, z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), union(y, z))))),
% 0.97/0.89      inference(quant_inst,[status(thm)],[])).
% 0.97/0.89  tff(125,plain,
% 0.97/0.89      ((~![V: $i, Y: $i, U: $i, X: $i] : ((~member(U, X)) | member(ordered_pair(U, V), cross_product(X, Y)) | (~member(V, Y)))) | (~member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x)) | member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, union(y, z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), union(y, z)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[124, 123])).
% 0.97/0.89  tff(126,plain,
% 0.97/0.89      ((~member(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), x)) | member(ordered_pair(first(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z))))), cross_product(x, union(y, z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), union(y, z)))),
% 0.97/0.89      inference(unit_resolution,[status(thm)],[125, 122])).
% 0.97/0.89  tff(127,plain,
% 0.97/0.89      (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), union(y, z))),
% 0.97/0.89      inference(unit_resolution,[status(thm)],[126, 112, 100])).
% 0.97/0.89  tff(128,plain,
% 0.97/0.89      (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(intersection(complement(y), complement(z))))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[127, 85])).
% 0.97/0.89  tff(129,plain,
% 0.97/0.89      (^[Z: $i, X: $i] : refl((member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X))) <=> (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X))))),
% 0.97/0.89      inference(bind,[status(th)],[])).
% 0.97/0.89  tff(130,plain,
% 0.97/0.89      (![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X))) <=> ![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))),
% 0.97/0.89      inference(quant_intro,[status(thm)],[129])).
% 0.97/0.89  tff(131,plain,
% 0.97/0.89      (![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X))) <=> ![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(132,plain,
% 0.97/0.89      (^[Z: $i, X: $i] : rewrite((((~member(Z, universal_class)) | member(Z, complement(X))) | member(Z, X)) <=> (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X))))),
% 0.97/0.89      inference(bind,[status(th)],[])).
% 0.97/0.89  tff(133,plain,
% 0.97/0.89      (![Z: $i, X: $i] : (((~member(Z, universal_class)) | member(Z, complement(X))) | member(Z, X)) <=> ![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))),
% 0.97/0.89      inference(quant_intro,[status(thm)],[132])).
% 0.97/0.89  tff(134,axiom,(![Z: $i, X: $i] : (((~member(Z, universal_class)) | member(Z, complement(X))) | member(Z, X))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','complement2')).
% 0.97/0.89  tff(135,plain,
% 0.97/0.89      (![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[134, 133])).
% 0.97/0.89  tff(136,plain,
% 0.97/0.89      (![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[135, 131])).
% 0.97/0.89  tff(137,plain,(
% 0.97/0.89      ![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))),
% 0.97/0.89      inference(skolemize,[status(sab)],[136])).
% 0.97/0.89  tff(138,plain,
% 0.97/0.89      (![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))),
% 0.97/0.89      inference(modus_ponens,[status(thm)],[137, 130])).
% 0.97/0.89  tff(139,plain,
% 0.97/0.89      (((~![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))) | (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(intersection(complement(y), complement(z)))))) <=> ((~![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(intersection(complement(y), complement(z)))))),
% 0.97/0.89      inference(rewrite,[status(thm)],[])).
% 0.97/0.89  tff(140,plain,
% 0.97/0.89      ((~![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))) | (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(intersection(complement(y), complement(z)))))),
% 0.97/0.90      inference(quant_inst,[status(thm)],[])).
% 0.97/0.90  tff(141,plain,
% 0.97/0.90      ((~![Z: $i, X: $i] : (member(Z, X) | (~member(Z, universal_class)) | member(Z, complement(X)))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(intersection(complement(y), complement(z))))),
% 0.97/0.90      inference(modus_ponens,[status(thm)],[140, 139])).
% 0.97/0.90  tff(142,plain,
% 0.97/0.90      (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class)) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(intersection(complement(y), complement(z))))),
% 0.97/0.90      inference(unit_resolution,[status(thm)],[141, 138])).
% 0.97/0.90  tff(143,plain,
% 0.97/0.90      (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), universal_class))),
% 0.97/0.90      inference(unit_resolution,[status(thm)],[142, 128])).
% 0.97/0.90  tff(144,plain,
% 0.97/0.90      (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z)))),
% 0.97/0.90      inference(unit_resolution,[status(thm)],[143, 73])).
% 0.97/0.90  tff(145,plain,
% 0.97/0.90      (^[Z: $i, Y: $i, X: $i] : refl(((~member(Z, intersection(X, Y))) | member(Z, X)) <=> ((~member(Z, intersection(X, Y))) | member(Z, X)))),
% 0.97/0.90      inference(bind,[status(th)],[])).
% 0.97/0.90  tff(146,plain,
% 0.97/0.90      (![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X)) <=> ![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X))),
% 0.97/0.90      inference(quant_intro,[status(thm)],[145])).
% 0.97/0.90  tff(147,plain,
% 0.97/0.90      (![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X)) <=> ![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X))),
% 0.97/0.90      inference(rewrite,[status(thm)],[])).
% 0.97/0.90  tff(148,axiom,(![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','intersection1')).
% 0.97/0.90  tff(149,plain,
% 0.97/0.90      (![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X))),
% 0.97/0.90      inference(modus_ponens,[status(thm)],[148, 147])).
% 0.97/0.90  tff(150,plain,(
% 0.97/0.90      ![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X))),
% 0.97/0.90      inference(skolemize,[status(sab)],[149])).
% 0.97/0.90  tff(151,plain,
% 0.97/0.90      (![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X))),
% 0.97/0.90      inference(modus_ponens,[status(thm)],[150, 146])).
% 0.97/0.90  tff(152,plain,
% 0.97/0.90      (((~![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X))) | ((~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z)))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(y)))) <=> ((~![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z)))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(y)))),
% 0.97/0.90      inference(rewrite,[status(thm)],[])).
% 0.97/0.90  tff(153,plain,
% 0.97/0.90      ((~![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X))) | ((~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z)))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(y)))),
% 0.97/0.90      inference(quant_inst,[status(thm)],[])).
% 0.97/0.90  tff(154,plain,
% 0.97/0.90      ((~![Z: $i, Y: $i, X: $i] : ((~member(Z, intersection(X, Y))) | member(Z, X))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), intersection(complement(y), complement(z)))) | member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(y))),
% 0.97/0.90      inference(modus_ponens,[status(thm)],[153, 152])).
% 0.97/0.90  tff(155,plain,
% 0.97/0.90      (member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(y))),
% 0.97/0.90      inference(unit_resolution,[status(thm)],[154, 151, 144])).
% 0.97/0.90  tff(156,plain,
% 0.97/0.90      (^[Z: $i, X: $i] : refl(((~member(Z, X)) | (~member(Z, complement(X)))) <=> ((~member(Z, X)) | (~member(Z, complement(X)))))),
% 0.97/0.90      inference(bind,[status(th)],[])).
% 0.97/0.90  tff(157,plain,
% 0.97/0.90      (![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X)))) <=> ![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))),
% 0.97/0.90      inference(quant_intro,[status(thm)],[156])).
% 0.97/0.90  tff(158,plain,
% 0.97/0.90      (![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X)))) <=> ![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))),
% 0.97/0.90      inference(rewrite,[status(thm)],[])).
% 0.97/0.90  tff(159,plain,
% 0.97/0.90      (^[Z: $i, X: $i] : rewrite(((~member(Z, complement(X))) | (~member(Z, X))) <=> ((~member(Z, X)) | (~member(Z, complement(X)))))),
% 0.97/0.90      inference(bind,[status(th)],[])).
% 0.97/0.90  tff(160,plain,
% 0.97/0.90      (![Z: $i, X: $i] : ((~member(Z, complement(X))) | (~member(Z, X))) <=> ![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))),
% 0.97/0.90      inference(quant_intro,[status(thm)],[159])).
% 0.97/0.90  tff(161,axiom,(![Z: $i, X: $i] : ((~member(Z, complement(X))) | (~member(Z, X)))), file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax','complement1')).
% 0.97/0.90  tff(162,plain,
% 0.97/0.90      (![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))),
% 0.97/0.90      inference(modus_ponens,[status(thm)],[161, 160])).
% 0.97/0.90  tff(163,plain,
% 0.97/0.90      (![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))),
% 0.97/0.90      inference(modus_ponens,[status(thm)],[162, 158])).
% 0.97/0.90  tff(164,plain,(
% 0.97/0.90      ![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))),
% 0.97/0.90      inference(skolemize,[status(sab)],[163])).
% 0.97/0.90  tff(165,plain,
% 0.97/0.90      (![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))),
% 0.97/0.90      inference(modus_ponens,[status(thm)],[164, 157])).
% 0.97/0.90  tff(166,plain,
% 0.97/0.90      (((~![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))) | ((~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(y))))) <=> ((~![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(y))))),
% 0.97/0.90      inference(rewrite,[status(thm)],[])).
% 0.97/0.90  tff(167,plain,
% 0.97/0.90      ((~![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))) | ((~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(y))))),
% 0.97/0.90      inference(quant_inst,[status(thm)],[])).
% 0.97/0.90  tff(168,plain,
% 0.97/0.90      ((~![Z: $i, X: $i] : ((~member(Z, X)) | (~member(Z, complement(X))))) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), y)) | (~member(second(not_subclass_element(cross_product(x, y), cross_product(x, union(y, z)))), complement(y)))),
% 0.97/0.90      inference(modus_ponens,[status(thm)],[167, 166])).
% 0.97/0.90  tff(169,plain,
% 0.97/0.90      ($false),
% 0.97/0.90      inference(unit_resolution,[status(thm)],[168, 165, 55, 155])).
% 0.97/0.90  % SZS output end Proof
%------------------------------------------------------------------------------