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Leo-III---1.8.0.UNS-Ref.s

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%------------------------------------------------------------------------------
% File     : Leo-III---1.8.0
% Problem  : SET025-7 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39

% Computer : n026.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8046.5625MB
% OS       : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Sun Sep 27 08:28:57 AM UTC 2026

% Result   : Unsatisfiable 6.85s 12.60s
% Output   : Refutation 7.18s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    2
%            Number of leaves      :  145
% Syntax   : Number of formulae    :  291 (  85 unt;   0 typ;   0 def)
%            Number of atoms       :  589 ( 174 equ;   0 cnn)
%            Maximal formula atoms :    5 (   2 avg)
%            Number of connectives : 2504 ( 258   ~; 298   |;   0   &;1948   @)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   15 (   7 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   53 (  51 usr;  11 con; 0-3 aty)
%            Number of variables   :  546 (   0   ^; 546   !;   0   ?; 546   :)

% Comments : 
%------------------------------------------------------------------------------
thf(member_decl,type,
    member: $i > $i > $o ).

thf(ordered_pair_decl,type,
    ordered_pair: $i > $i > $i ).

thf(x_decl,type,
    x: $i ).

thf(y_decl,type,
    y: $i ).

thf(universal_class_decl,type,
    universal_class: $i ).

thf(singleton_decl,type,
    singleton: $i > $i ).

thf(member_of_decl,type,
    member_of: $i > $i ).

thf(unordered_pair_decl,type,
    unordered_pair: $i > $i > $i ).

thf(domain_of_decl,type,
    domain_of: $i > $i ).

thf(inverse_decl,type,
    inverse: $i > $i ).

thf(range_of_decl,type,
    range_of: $i > $i ).

thf(function_decl,type,
    function: $i > $o ).

thf(choice_decl,type,
    choice: $i ).

thf(not_subclass_element_decl,type,
    not_subclass_element: $i > $i > $i ).

thf(intersection_decl,type,
    intersection: $i > $i > $i ).

thf(complement_decl,type,
    complement: $i > $i ).

thf(null_class_decl,type,
    null_class: $i ).

thf(subclass_decl,type,
    subclass: $i > $i > $o ).

thf(image_decl,type,
    image: $i > $i > $i ).

thf(element_relation_decl,type,
    element_relation: $i ).

thf(power_class_decl,type,
    power_class: $i > $i ).

thf(single_valued_class_decl,type,
    single_valued_class: $i > $o ).

thf(compose_decl,type,
    compose: $i > $i > $i ).

thf(identity_relation_decl,type,
    identity_relation: $i ).

thf(one_to_one_decl,type,
    one_to_one: $i > $o ).

thf(cross_product_decl,type,
    cross_product: $i > $i > $i ).

thf(restrict_decl,type,
    restrict: $i > $i > $i > $i ).

thf(compatible_decl,type,
    compatible: $i > $i > $i > $o ).

thf(homomorphism_decl,type,
    homomorphism: $i > $i > $i > $o ).

thf(operation_decl,type,
    operation: $i > $o ).

thf(first_decl,type,
    first: $i > $i ).

thf(domain_decl,type,
    domain: $i > $i > $i > $i ).

thf(second_decl,type,
    second: $i > $i ).

thf(range_decl,type,
    range: $i > $i > $i > $i ).

thf(symmetric_difference_decl,type,
    symmetric_difference: $i > $i > $i ).

thf(inductive_decl,type,
    inductive: $i > $o ).

thf(successor_relation_decl,type,
    successor_relation: $i ).

thf(union_decl,type,
    union: $i > $i > $i ).

thf(diagonalise_decl,type,
    diagonalise: $i > $i ).

thf(subset_relation_decl,type,
    subset_relation: $i ).

thf(cantor_decl,type,
    cantor: $i > $i ).

thf(regular_decl,type,
    regular: $i > $i ).

thf(sum_class_decl,type,
    sum_class: $i > $i ).

thf(apply_decl,type,
    apply: $i > $i > $i ).

thf(omega_decl,type,
    omega: $i ).

thf(member_of1_decl,type,
    member_of1: $i > $i ).

thf(successor_decl,type,
    successor: $i > $i ).

thf(rotate_decl,type,
    rotate: $i > $i ).

thf(flip_decl,type,
    flip: $i > $i ).

thf(not_homomorphism1_decl,type,
    not_homomorphism1: $i > $i > $i > $i ).

thf(not_homomorphism2_decl,type,
    not_homomorphism2: $i > $i > $i > $i ).

thf(57,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( A @ singleton @ ( D @ image ) @ ( C @ image ) @ ( B @ member ) )
      | ~ ( D @ ( C @ compose ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',compose2) ).

thf(267,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( A @ singleton @ ( D @ image ) @ ( C @ image ) @ ( B @ member ) )
      | ~ ( D @ ( C @ compose ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[57]) ).

thf(120,axiom,
    ( ( element_relation @ inverse @ ( element_relation @ complement @ compose ) @ complement @ ( universal_class @ ( universal_class @ cross_product ) @ intersection ) @ ( universal_class @ ( universal_class @ cross_product ) @ intersection ) )
    = subset_relation ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',subset_relation) ).

thf(409,plain,
    ( ( element_relation @ inverse @ ( element_relation @ complement @ compose ) @ complement @ ( universal_class @ ( universal_class @ cross_product ) @ intersection ) @ ( universal_class @ ( universal_class @ cross_product ) @ intersection ) )
    = subset_relation ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[120]) ).

thf(91,axiom,
    ! [A: $i] :
      ( ( universal_class @ ( A @ cross_product ) @ flip @ domain_of )
      = ( A @ inverse ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',inverse) ).

thf(347,plain,
    ! [A: $i] :
      ( ( universal_class @ ( A @ cross_product ) @ flip @ domain_of )
      = ( A @ inverse ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[91]) ).

thf(48,axiom,
    omega @ inductive,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',omega_is_inductive1) ).

thf(249,plain,
    omega @ inductive,
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[48]) ).

thf(93,axiom,
    ! [A: $i] :
      ( ( ( A @ singleton )
        = null_class )
      | ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',singleton_is_null_class) ).

thf(352,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
        = null_class )
      | ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[93]) ).

thf(11,axiom,
    ! [A: $i] :
      ( ( identity_relation @ ( A @ inverse @ ( A @ compose ) @ subclass ) )
      | ~ ( A @ single_valued_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',single_valued_class1) ).

thf(170,plain,
    ! [A: $i] :
      ( ( identity_relation @ ( A @ inverse @ ( A @ compose ) @ subclass ) )
      | ~ ( A @ single_valued_class ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[11]) ).

thf(47,axiom,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ union ) )
      = ( A @ successor ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',successor) ).

thf(247,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ union ) )
      = ( A @ successor ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[47]) ).

thf(105,axiom,
    ! [B: $i,A: $i] :
      ( ( A = B )
      | ~ ( universal_class @ ( B @ member ) )
      | ( ( A @ singleton )
       != ( B @ singleton ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',singleton_identified_by_element2) ).

thf(379,plain,
    ! [B: $i,A: $i] :
      ( ( A = B )
      | ~ ( universal_class @ ( B @ member ) )
      | ( ( A @ singleton )
       != ( B @ singleton ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[105]) ).

thf(58,axiom,
    ! [A: $i] :
      ( ( A = null_class )
      | ( ( null_class @ ( A @ not_subclass_element ) @ singleton )
        = A )
      | ( A @ ( null_class @ ( A @ ( null_class @ ( A @ not_subclass_element ) @ singleton @ complement @ intersection ) @ not_subclass_element ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_2_to_number_of_elements_in_class) ).

thf(269,plain,
    ! [A: $i] :
      ( ( A = null_class )
      | ( ( null_class @ ( A @ not_subclass_element ) @ singleton )
        = A )
      | ( A @ ( null_class @ ( A @ ( null_class @ ( A @ not_subclass_element ) @ singleton @ complement @ intersection ) @ not_subclass_element ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[58]) ).

thf(28,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ complement @ ( A @ complement @ intersection ) @ complement @ ( B @ ( A @ intersection ) @ complement @ intersection ) )
      = ( B @ ( A @ symmetric_difference ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',symmetric_difference) ).

thf(202,plain,
    ! [B: $i,A: $i] :
      ( ( B @ complement @ ( A @ complement @ intersection ) @ complement @ ( B @ ( A @ intersection ) @ complement @ intersection ) )
      = ( B @ ( A @ symmetric_difference ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[28]) ).

thf(107,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ ( B @ not_subclass_element ) @ member ) )
      | ( A = B )
      | ~ ( B @ ( B @ ( A @ not_subclass_element ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',equality2) ).

thf(384,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ ( B @ not_subclass_element ) @ member ) )
      | ( A = B )
      | ~ ( B @ ( B @ ( A @ not_subclass_element ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[107]) ).

thf(88,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( A @ second @ ( A @ first @ ordered_pair ) )
        = A )
      | ~ ( C @ ( B @ cross_product ) @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cartesian_product4) ).

thf(340,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( A @ second @ ( A @ first @ ordered_pair ) )
        = A )
      | ~ ( C @ ( B @ cross_product ) @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[88]) ).

thf(4,axiom,
    ! [A: $i] :
      ( ( A @ inverse @ domain_of )
      = ( A @ range_of ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',range_of) ).

thf(153,plain,
    ! [A: $i] :
      ( ( A @ inverse @ domain_of )
      = ( A @ range_of ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[4]) ).

thf(13,axiom,
    ! [A: $i] : ( A @ ( A @ subclass ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',subclass_is_reflexive) ).

thf(174,plain,
    ! [A: $i] : ( A @ ( A @ subclass ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[13]) ).

thf(19,axiom,
    ! [A: $i] :
      ( ( A @ domain_of @ domain_of @ ( A @ range_of @ subclass ) )
      | ~ ( A @ operation ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',operation3) ).

thf(185,plain,
    ! [A: $i] :
      ( ( A @ domain_of @ domain_of @ ( A @ range_of @ subclass ) )
      | ~ ( A @ operation ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[19]) ).

thf(52,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) )
      = ( B @ singleton @ ( A @ singleton @ union ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',unordered_pairs_and_singletons) ).

thf(257,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) )
      = ( B @ singleton @ ( A @ singleton @ union ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[52]) ).

thf(109,axiom,
    ! [B: $i,A: $i] :
      ~ ( B @ ( B @ complement @ intersection ) @ ( A @ member ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',special_classes_lemma) ).

thf(389,plain,
    ! [B: $i,A: $i] :
      ~ ( B @ ( B @ complement @ intersection ) @ ( A @ member ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[109]) ).

thf(102,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( C @ member ) )
      | ~ ( A @ ( C @ member ) )
      | ~ ( B @ ( A @ subclass ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',subclass_members) ).

thf(372,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( C @ member ) )
      | ~ ( A @ ( C @ member ) )
      | ~ ( B @ ( A @ subclass ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[102]) ).

thf(90,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ domain_of @ ( A @ member ) )
      | ( ( universal_class @ ( A @ singleton @ ( B @ restrict ) ) )
        = null_class )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',domain2) ).

thf(344,plain,
    ! [B: $i,A: $i] :
      ( ( B @ domain_of @ ( A @ member ) )
      | ( ( universal_class @ ( A @ singleton @ ( B @ restrict ) ) )
        = null_class )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[90]) ).

thf(95,axiom,
    ! [A: $i] :
      ( ( A @ ( universal_class @ ( element_relation @ restrict ) ) @ domain_of )
      = ( A @ sum_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',sum_class_definition) ).

thf(357,plain,
    ! [A: $i] :
      ( ( A @ ( universal_class @ ( element_relation @ restrict ) ) @ domain_of )
      = ( A @ sum_class ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[95]) ).

thf(21,axiom,
    ! [A: $i] : ( A @ ( null_class @ subclass ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',null_class_is_subclass) ).

thf(189,plain,
    ! [A: $i] : ( A @ ( null_class @ subclass ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[21]) ).

thf(64,axiom,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != null_class )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_to_set_in_its_singleton) ).

thf(284,plain,
    ! [A: $i] :
      ( ( ( A @ singleton )
       != null_class )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[64]) ).

thf(123,axiom,
    ! [B: $i,A: $i] :
      ( ( ( A @ successor )
        = B )
      | ~ ( successor_relation @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',successor_relation2) ).

thf(416,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ successor )
        = B )
      | ~ ( successor_relation @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[123]) ).

thf(33,axiom,
    ! [A: $i] :
      ( ( A @ ( A @ ( successor_relation @ image ) @ subclass ) )
      | ~ ( A @ inductive ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',inductive2) ).

thf(216,plain,
    ! [A: $i] :
      ( ( A @ ( A @ ( successor_relation @ image ) @ subclass ) )
      | ~ ( A @ inductive ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[33]) ).

thf(134,axiom,
    ! [A: $i] :
      ( ( A @ inductive )
      | ~ ( A @ ( A @ ( successor_relation @ image ) @ subclass ) )
      | ~ ( A @ ( null_class @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',inductive3) ).

thf(443,plain,
    ! [A: $i] :
      ( ( A @ inductive )
      | ~ ( A @ ( A @ ( successor_relation @ image ) @ subclass ) )
      | ~ ( A @ ( null_class @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[134]) ).

thf(79,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ ( B @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cartesian_product2) ).

thf(321,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ ( B @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[79]) ).

thf(43,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ compatible ) ) )
      | ~ ( C @ ( B @ ( A @ homomorphism ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',homomorphism3) ).

thf(238,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ compatible ) ) )
      | ~ ( C @ ( B @ ( A @ homomorphism ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[43]) ).

thf(67,axiom,
    ! [A: $i] : ( universal_class @ ( A @ singleton @ member ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',singletons_are_sets) ).

thf(293,plain,
    ! [A: $i] : ( universal_class @ ( A @ singleton @ member ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[67]) ).

thf(138,axiom,
    null_class @ singleton @ ( null_class @ member ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',null_class_in_its_singleton) ).

thf(453,plain,
    null_class @ singleton @ ( null_class @ member ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[138]) ).

thf(121,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( universal_class @ ( B @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_2_to_cartesian_product) ).

thf(411,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( universal_class @ ( B @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[121]) ).

thf(56,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ ( C @ ( A @ ( B @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( D @ flip @ ( C @ ( B @ ( A @ ordered_pair ) @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',flip2) ).

thf(265,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ ( C @ ( A @ ( B @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( D @ flip @ ( C @ ( B @ ( A @ ordered_pair ) @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[56]) ).

thf(30,axiom,
    ! [B: $i,A: $i] :
      ( ( ( B @ singleton )
        = A )
      | ( A = null_class )
      | ~ ( B @ singleton @ ( A @ subclass ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',two_subsets_of_singleton) ).

thf(206,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ singleton )
        = A )
      | ( A = null_class )
      | ~ ( B @ singleton @ ( A @ subclass ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[30]) ).

thf(74,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',unordered_pair2) ).

thf(307,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[74]) ).

thf(41,axiom,
    ! [A: $i] :
      ( ( ( A @ regular @ ( A @ intersection ) )
        = null_class )
      | ( A = null_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',regularity2) ).

thf(233,plain,
    ! [A: $i] :
      ( ( ( A @ regular @ ( A @ intersection ) )
        = null_class )
      | ( A = null_class ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[41]) ).

thf(132,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( universal_class @ ( A @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_1_to_cartesian_product) ).

thf(439,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( universal_class @ ( A @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[132]) ).

thf(35,axiom,
    ! [A: $i] :
      ( ( A @ function )
      | ~ ( A @ operation ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',operation1) ).

thf(220,plain,
    ! [A: $i] :
      ( ( A @ function )
      | ~ ( A @ operation ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[35]) ).

thf(99,axiom,
    ! [B: $i,A: $i] : ( universal_class @ ( universal_class @ cross_product ) @ ( B @ ( A @ compose ) @ subclass ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',compose1) ).

thf(366,plain,
    ! [B: $i,A: $i] : ( universal_class @ ( universal_class @ cross_product ) @ ( B @ ( A @ compose ) @ subclass ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[99]) ).

thf(85,axiom,
    ! [B: $i,A: $i] :
      ( ( element_relation @ ( B @ ( A @ ordered_pair ) @ member ) )
      | ~ ( B @ ( A @ member ) )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',element_relation3) ).

thf(334,plain,
    ! [B: $i,A: $i] :
      ( ( element_relation @ ( B @ ( A @ ordered_pair ) @ member ) )
      | ~ ( B @ ( A @ member ) )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[85]) ).

thf(92,axiom,
    ! [B: $i,A: $i] :
      ( ( ( A @ ( B @ unordered_pair ) )
       != null_class )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_to_unordered_pair_axiom2) ).

thf(349,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ ( B @ unordered_pair ) )
       != null_class )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[92]) ).

thf(69,axiom,
    ! [A: $i] : ( universal_class @ ( universal_class @ ( universal_class @ cross_product ) @ cross_product ) @ ( A @ rotate @ subclass ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rotate1) ).

thf(297,plain,
    ! [A: $i] : ( universal_class @ ( universal_class @ ( universal_class @ cross_product ) @ cross_product ) @ ( A @ rotate @ subclass ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[69]) ).

thf(128,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( A = C )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( C @ ( A @ ordered_pair ) @ member ) )
      | ( ( B @ ( A @ unordered_pair ) )
       != ( B @ ( C @ unordered_pair ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',right_cancellation) ).

thf(429,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A = C )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( C @ ( A @ ordered_pair ) @ member ) )
      | ( ( B @ ( A @ unordered_pair ) )
       != ( B @ ( C @ unordered_pair ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[128]) ).

thf(60,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ member ) )
      | ~ ( C @ ( B @ intersection ) @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',intersection1) ).

thf(275,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ member ) )
      | ~ ( C @ ( B @ intersection ) @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[60]) ).

thf(23,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( A @ function )
      | ~ ( C @ ( B @ ( A @ compatible ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',compatible1) ).

thf(192,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A @ function )
      | ~ ( C @ ( B @ ( A @ compatible ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[23]) ).

thf(119,axiom,
    ! [B: $i,A: $i] :
      ( ~ ( B @ ( A @ member ) )
      | ~ ( B @ complement @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',complement1) ).

thf(407,plain,
    ! [B: $i,A: $i] :
      ( ~ ( B @ ( A @ member ) )
      | ~ ( B @ complement @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[119]) ).

thf(39,axiom,
    ( ( subset_relation @ ( subset_relation @ inverse @ intersection ) )
    = identity_relation ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',identity_relation) ).

thf(229,plain,
    ( ( subset_relation @ ( subset_relation @ inverse @ intersection ) )
    = identity_relation ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[39]) ).

thf(50,axiom,
    ! [A: $i] :
      ( ( A = null_class )
      | ~ ( null_class @ ( A @ subclass ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_of_null_class_is_subclass) ).

thf(252,plain,
    ! [A: $i] :
      ( ( A = null_class )
      | ~ ( null_class @ ( A @ subclass ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[50]) ).

thf(130,axiom,
    ! [A: $i] :
      ( ( universal_class @ ( A @ singleton @ member_of @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',member_exists1) ).

thf(435,plain,
    ! [A: $i] :
      ( ( universal_class @ ( A @ singleton @ member_of @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[130]) ).

thf(142,axiom,
    ! [A: $i] :
      ( ( A @ ( null_class @ member ) )
      | ~ ( A @ inductive ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',inductive1) ).

thf(461,plain,
    ! [A: $i] :
      ( ( A @ ( null_class @ member ) )
      | ~ ( A @ inductive ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[142]) ).

thf(81,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ compose ) @ ( A @ ( D @ ordered_pair ) @ member ) )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( A @ ( D @ ordered_pair ) @ member ) )
      | ~ ( D @ singleton @ ( C @ image ) @ ( B @ image ) @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',compose3) ).

thf(324,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ compose ) @ ( A @ ( D @ ordered_pair ) @ member ) )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( A @ ( D @ ordered_pair ) @ member ) )
      | ~ ( D @ singleton @ ( C @ image ) @ ( B @ image ) @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[81]) ).

thf(6,axiom,
    ! [A: $i] :
      ( ( A = null_class )
      | ( ( null_class @ ( A @ not_subclass_element ) @ singleton )
        = A )
      | ( ( null_class @ ( A @ ( null_class @ ( A @ not_subclass_element ) @ singleton @ complement @ intersection ) @ not_subclass_element ) )
       != ( null_class @ ( A @ not_subclass_element ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_1_to_number_of_elements_in_class) ).

thf(156,plain,
    ! [A: $i] :
      ( ( A = null_class )
      | ( ( null_class @ ( A @ not_subclass_element ) @ singleton )
        = A )
      | ( ( null_class @ ( A @ ( null_class @ ( A @ not_subclass_element ) @ singleton @ complement @ intersection ) @ not_subclass_element ) )
       != ( null_class @ ( A @ not_subclass_element ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[6]) ).

thf(117,axiom,
    ! [A: $i] :
      ( ( universal_class @ ( A @ power_class @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',power_class2) ).

thf(403,plain,
    ! [A: $i] :
      ( ( universal_class @ ( A @ power_class @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[117]) ).

thf(83,axiom,
    ! [A: $i] :
      ( ( ( A @ singleton @ member_of @ singleton )
        = ( A @ singleton ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',member_exists2) ).

thf(328,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ member_of @ singleton )
        = ( A @ singleton ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[83]) ).

thf(37,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ complement @ ( A @ complement @ intersection ) @ complement )
      = ( B @ ( A @ union ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',union) ).

thf(225,plain,
    ! [B: $i,A: $i] :
      ( ( B @ complement @ ( A @ complement @ intersection ) @ complement )
      = ( B @ ( A @ union ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[37]) ).

thf(111,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ ( B @ cross_product ) @ ( C @ ( A @ ordered_pair ) @ member ) )
      | ~ ( D @ ( C @ member ) )
      | ~ ( B @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cartesian_product3) ).

thf(393,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ ( B @ cross_product ) @ ( C @ ( A @ ordered_pair ) @ member ) )
      | ~ ( D @ ( C @ member ) )
      | ~ ( B @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[111]) ).

thf(140,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ singleton @ subclass ) )
      | ~ ( B @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',property_of_singletons2) ).

thf(457,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ singleton @ subclass ) )
      | ~ ( B @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[140]) ).

thf(89,axiom,
    universal_class @ ( null_class @ member ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',null_class_is_a_set) ).

thf(343,plain,
    universal_class @ ( null_class @ member ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[89]) ).

thf(46,axiom,
    ! [A: $i] :
      ( ( ( A @ member_of )
        = A )
      | ( ( A @ member_of1 @ singleton )
        = A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',member_of_non_singleton_unique2) ).

thf(244,plain,
    ! [A: $i] :
      ( ( ( A @ member_of )
        = A )
      | ( ( A @ member_of1 @ singleton )
        = A ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[46]) ).

thf(76,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != null_class )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_to_unordered_pair_axiom3) ).

thf(311,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != null_class )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[76]) ).

thf(113,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_2_to_unordered_pair) ).

thf(398,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( B @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[113]) ).

thf(70,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ subclass ) )
      | ~ ( B @ ( B @ ( A @ not_subclass_element ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',not_subclass_members2) ).

thf(298,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ subclass ) )
      | ~ ( B @ ( B @ ( A @ not_subclass_element ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[70]) ).

thf(126,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( C @ ( A @ unordered_pair ) @ subclass ) )
      | ~ ( B @ ( C @ member ) )
      | ~ ( B @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',unordered_pair_is_subset) ).

thf(425,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( C @ ( A @ unordered_pair ) @ subclass ) )
      | ~ ( B @ ( C @ member ) )
      | ~ ( B @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[126]) ).

thf(9,axiom,
    ! [A: $i] :
      ( ( A @ complement @ ( element_relation @ image ) @ complement )
      = ( A @ power_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',power_class_definition) ).

thf(166,plain,
    ! [A: $i] :
      ( ( A @ complement @ ( element_relation @ image ) @ complement )
      = ( A @ power_class ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[9]) ).

thf(2,axiom,
    ! [A: $i] :
      ( ( ( A @ member_of )
        = A )
      | ( ( A @ member_of @ singleton )
        = A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',member_exists4) ).

thf(148,plain,
    ! [A: $i] :
      ( ( ( A @ member_of )
        = A )
      | ( ( A @ member_of @ singleton )
        = A ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[2]) ).

thf(55,axiom,
    universal_class @ ( universal_class @ cross_product ) @ ( element_relation @ subclass ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',element_relation1) ).

thf(264,plain,
    universal_class @ ( universal_class @ cross_product ) @ ( element_relation @ subclass ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[55]) ).

thf(62,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_1_to_unordered_pair) ).

thf(279,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) @ ( A @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[62]) ).

thf(16,axiom,
    ! [B: $i,A: $i] : ( A @ ( B @ unordered_pair ) @ ( A @ singleton @ subclass ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',singleton_in_unordered_pair2) ).

thf(180,plain,
    ! [B: $i,A: $i] : ( A @ ( B @ unordered_pair ) @ ( A @ singleton @ subclass ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[16]) ).

thf(116,axiom,
    universal_class @ ( universal_class @ cross_product ) @ ( successor_relation @ subclass ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',successor_relation1) ).

thf(402,plain,
    universal_class @ ( universal_class @ cross_product ) @ ( successor_relation @ subclass ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[116]) ).

thf(53,axiom,
    ! [E: $i,D: $i,C: $i,B: $i,A: $i] :
      ( ( ( E @ ( A @ apply ) @ ( D @ ( A @ apply ) @ ordered_pair ) @ ( C @ apply ) )
        = ( E @ ( D @ ordered_pair ) @ ( B @ apply ) @ ( A @ apply ) ) )
      | ~ ( B @ domain_of @ ( E @ ( D @ ordered_pair ) @ member ) )
      | ~ ( C @ ( B @ ( A @ homomorphism ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',homomorphism4) ).

thf(259,plain,
    ! [E: $i,D: $i,C: $i,B: $i,A: $i] :
      ( ( ( E @ ( A @ apply ) @ ( D @ ( A @ apply ) @ ordered_pair ) @ ( C @ apply ) )
        = ( E @ ( D @ ordered_pair ) @ ( B @ apply ) @ ( A @ apply ) ) )
      | ~ ( B @ domain_of @ ( E @ ( D @ ordered_pair ) @ member ) )
      | ~ ( C @ ( B @ ( A @ homomorphism ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[53]) ).

thf(122,axiom,
    ! [B: $i,A: $i] :
      ( ( ( A @ member_of )
        = B )
      | ~ ( A @ ( B @ member ) )
      | ( ( A @ member_of @ singleton )
       != A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',property_of_singletons1) ).

thf(413,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ member_of )
        = B )
      | ~ ( A @ ( B @ member ) )
      | ( ( A @ member_of @ singleton )
       != A ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[122]) ).

thf(63,axiom,
    ! [A: $i] :
      ( ( ( A @ member_of )
        = A )
      | ( universal_class @ ( A @ member_of1 @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',member_of_non_singleton_unique1) ).

thf(281,plain,
    ! [A: $i] :
      ( ( ( A @ member_of )
        = A )
      | ( universal_class @ ( A @ member_of1 @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[63]) ).

thf(29,axiom,
    ! [A: $i] :
      ( ( A @ single_valued_class )
      | ~ ( identity_relation @ ( A @ inverse @ ( A @ compose ) @ subclass ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',single_valued_class2) ).

thf(204,plain,
    ! [A: $i] :
      ( ( A @ single_valued_class )
      | ~ ( identity_relation @ ( A @ inverse @ ( A @ compose ) @ subclass ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[29]) ).

thf(110,axiom,
    ! [A: $i] :
      ( ( universal_class @ ( universal_class @ cross_product ) @ ( A @ subclass ) )
      | ~ ( A @ function ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',function1) ).

thf(391,plain,
    ! [A: $i] :
      ( ( universal_class @ ( universal_class @ cross_product ) @ ( A @ subclass ) )
      | ~ ( A @ function ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[110]) ).

thf(135,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ subclass ) )
      | ( A @ ( B @ ( A @ not_subclass_element ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',not_subclass_members1) ).

thf(445,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ subclass ) )
      | ( A @ ( B @ ( A @ not_subclass_element ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[135]) ).

thf(106,axiom,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',set_in_its_singleton) ).

thf(382,plain,
    ! [A: $i] :
      ( ( A @ singleton @ ( A @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[106]) ).

thf(144,axiom,
    ! [A: $i] :
      ( ( ( A @ singleton @ member_of )
        = A )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',member_of_singleton_is_unique) ).

thf(466,plain,
    ! [A: $i] :
      ( ( ( A @ singleton @ member_of )
        = A )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[144]) ).

thf(42,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ singleton @ ( A @ image ) @ sum_class )
      = ( B @ ( A @ apply ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',apply) ).

thf(236,plain,
    ! [B: $i,A: $i] :
      ( ( B @ singleton @ ( A @ image ) @ sum_class )
      = ( B @ ( A @ apply ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[42]) ).

thf(17,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ domain_of @ domain_of @ ( A @ range_of @ subclass ) )
      | ~ ( C @ ( B @ ( A @ compatible ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',compatible3) ).

thf(181,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ domain_of @ domain_of @ ( A @ range_of @ subclass ) )
      | ~ ( C @ ( B @ ( A @ compatible ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[17]) ).

thf(7,axiom,
    ! [B: $i,A: $i] :
      ( ( A @ ( B @ subclass ) )
      | ( A != B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',equal_implies_subclass2) ).

thf(159,plain,
    ! [B: $i,A: $i] :
      ( ( A @ ( B @ subclass ) )
      | ( A != B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[7]) ).

thf(20,axiom,
    ! [A: $i] :
      ( ( identity_relation @ ( A @ inverse @ ( A @ compose ) @ subclass ) )
      | ~ ( A @ function ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',function2) ).

thf(187,plain,
    ! [A: $i] :
      ( ( identity_relation @ ( A @ inverse @ ( A @ compose ) @ subclass ) )
      | ~ ( A @ function ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[20]) ).

thf(12,axiom,
    ! [A: $i] :
      ( ( A @ one_to_one )
      | ~ ( A @ function )
      | ~ ( A @ inverse @ function ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',one_to_one3) ).

thf(172,plain,
    ! [A: $i] :
      ( ( A @ one_to_one )
      | ~ ( A @ function )
      | ~ ( A @ inverse @ function ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[12]) ).

thf(124,axiom,
    ! [B: $i,A: $i] :
      ( ( A = B )
      | ~ ( universal_class @ ( A @ member ) )
      | ( ( A @ singleton )
       != ( B @ singleton ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',singleton_identified_by_element1) ).

thf(419,plain,
    ! [B: $i,A: $i] :
      ( ( A = B )
      | ~ ( universal_class @ ( A @ member ) )
      | ( ( A @ singleton )
       != ( B @ singleton ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[124]) ).

thf(104,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ ( C @ homomorphism ) ) )
      | ( A @ domain_of @ ( B @ ( A @ ( C @ not_homomorphism2 ) ) @ ( B @ ( A @ ( C @ not_homomorphism1 ) ) @ ordered_pair ) @ member ) )
      | ~ ( B @ ( A @ ( C @ compatible ) ) )
      | ~ ( B @ operation )
      | ~ ( A @ operation ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',homomorphism5) ).

thf(377,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ ( C @ homomorphism ) ) )
      | ( A @ domain_of @ ( B @ ( A @ ( C @ not_homomorphism2 ) ) @ ( B @ ( A @ ( C @ not_homomorphism1 ) ) @ ordered_pair ) @ member ) )
      | ~ ( B @ ( A @ ( C @ compatible ) ) )
      | ~ ( B @ operation )
      | ~ ( A @ operation ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[104]) ).

thf(97,axiom,
    ! [B: $i,A: $i] : ( A @ singleton @ ( B @ unordered_pair ) @ ( A @ singleton @ member ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_1_to_singletons_are_sets) ).

thf(362,plain,
    ! [B: $i,A: $i] : ( A @ singleton @ ( B @ unordered_pair ) @ ( A @ singleton @ member ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[97]) ).

thf(78,axiom,
    ! [B: $i,A: $i] :
      ( ( ( A @ ( B @ unordered_pair ) )
        = ( B @ singleton ) )
      | ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',unordered_pair_equals_singleton1) ).

thf(318,plain,
    ! [B: $i,A: $i] :
      ( ( ( A @ ( B @ unordered_pair ) )
        = ( B @ singleton ) )
      | ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[78]) ).

thf(72,axiom,
    ! [A: $i] : ( universal_class @ ( universal_class @ ( universal_class @ cross_product ) @ cross_product ) @ ( A @ flip @ subclass ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',flip1) ).

thf(303,plain,
    ! [A: $i] : ( universal_class @ ( universal_class @ ( universal_class @ cross_product ) @ cross_product ) @ ( A @ flip @ subclass ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[72]) ).

thf(108,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ intersection ) @ ( A @ member ) )
      | ~ ( C @ ( A @ member ) )
      | ~ ( B @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',intersection3) ).

thf(387,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ intersection ) @ ( A @ member ) )
      | ~ ( C @ ( A @ member ) )
      | ~ ( B @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[108]) ).

thf(100,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ member ) )
      | ( B @ complement @ ( A @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',complement2) ).

thf(367,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ member ) )
      | ( B @ complement @ ( A @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[100]) ).

thf(80,axiom,
    ! [B: $i,A: $i] : ( universal_class @ ( B @ ( A @ unordered_pair ) @ member ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',unordered_pairs_in_universal) ).

thf(323,plain,
    ! [B: $i,A: $i] : ( universal_class @ ( B @ ( A @ unordered_pair ) @ member ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[80]) ).

thf(32,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ compatible ) ) )
      | ~ ( C @ domain_of @ domain_of @ ( A @ range_of @ subclass ) )
      | ( ( B @ domain_of @ domain_of )
       != ( A @ domain_of ) )
      | ~ ( A @ function ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',compatible4) ).

thf(213,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ compatible ) ) )
      | ~ ( C @ domain_of @ domain_of @ ( A @ range_of @ subclass ) )
      | ( ( B @ domain_of @ domain_of )
       != ( A @ domain_of ) )
      | ~ ( A @ function ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[32]) ).

thf(44,axiom,
    ! [A: $i] :
      ( ( A @ ( omega @ subclass ) )
      | ~ ( A @ inductive ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',omega_is_inductive2) ).

thf(240,plain,
    ! [A: $i] :
      ( ( A @ ( omega @ subclass ) )
      | ~ ( A @ inductive ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[44]) ).

thf(5,axiom,
    choice @ function,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',choice1) ).

thf(155,plain,
    choice @ function,
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[5]) ).

thf(26,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( null_class @ ( C @ singleton @ ( B @ ( A @ restrict ) ) @ not_subclass_element ) @ first )
      = ( C @ ( B @ ( A @ domain ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',domain) ).

thf(198,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( null_class @ ( C @ singleton @ ( B @ ( A @ restrict ) ) @ not_subclass_element ) @ first )
      = ( C @ ( B @ ( A @ domain ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[26]) ).

thf(103,axiom,
    ! [B: $i,A: $i] :
      ( ( A = B )
      | ~ ( A @ ( A @ ( B @ not_subclass_element ) @ member ) )
      | ~ ( B @ ( B @ ( A @ not_subclass_element ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',equality4) ).

thf(374,plain,
    ! [B: $i,A: $i] :
      ( ( A = B )
      | ~ ( A @ ( A @ ( B @ not_subclass_element ) @ member ) )
      | ~ ( B @ ( B @ ( A @ not_subclass_element ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[103]) ).

thf(51,axiom,
    ! [A: $i] :
      ( ( A @ inverse @ function )
      | ~ ( A @ one_to_one ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',one_to_one2) ).

thf(255,plain,
    ! [A: $i] :
      ( ( A @ inverse @ function )
      | ~ ( A @ one_to_one ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[51]) ).

thf(31,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ subclass ) )
      | ( A != B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',equal_implies_subclass1) ).

thf(209,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ subclass ) )
      | ( A != B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[31]) ).

thf(94,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ flip @ ( C @ ( A @ ( B @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( universal_class @ ( universal_class @ ( universal_class @ cross_product ) @ cross_product ) @ ( C @ ( A @ ( B @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( D @ ( C @ ( B @ ( A @ ordered_pair ) @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',flip3) ).

thf(355,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ flip @ ( C @ ( A @ ( B @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( universal_class @ ( universal_class @ ( universal_class @ cross_product ) @ cross_product ) @ ( C @ ( A @ ( B @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( D @ ( C @ ( B @ ( A @ ordered_pair ) @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[94]) ).

thf(24,axiom,
    ! [B: $i,A: $i] : ( B @ ( A @ unordered_pair ) @ ( A @ singleton @ subclass ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',singleton_in_unordered_pair1) ).

thf(194,plain,
    ! [B: $i,A: $i] : ( B @ ( A @ unordered_pair ) @ ( A @ singleton @ subclass ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[24]) ).

thf(15,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( B @ domain_of @ domain_of )
        = ( A @ domain_of ) )
      | ~ ( C @ ( B @ ( A @ compatible ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',compatible2) ).

thf(177,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( ( B @ domain_of @ domain_of )
        = ( A @ domain_of ) )
      | ~ ( C @ ( B @ ( A @ compatible ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[15]) ).

thf(84,axiom,
    ! [A: $i] :
      ( ( ( A @ member_of )
        = A )
      | ( universal_class @ ( A @ member_of @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',member_exists3) ).

thf(331,plain,
    ! [A: $i] :
      ( ( ( A @ member_of )
        = A )
      | ( universal_class @ ( A @ member_of @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[84]) ).

thf(133,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ member ) )
      | ~ ( element_relation @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',element_relation2) ).

thf(441,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ member ) )
      | ~ ( element_relation @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[133]) ).

thf(143,axiom,
    ! [A: $i] :
      ( ( A @ ( null_class @ ( A @ not_subclass_element ) @ member ) )
      | ( A = null_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',null_class_is_unique) ).

thf(463,plain,
    ! [A: $i] :
      ( ( A @ ( null_class @ ( A @ not_subclass_element ) @ member ) )
      | ( A = null_class ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[143]) ).

thf(87,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ rotate @ ( B @ ( A @ ( C @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( universal_class @ ( universal_class @ ( universal_class @ cross_product ) @ cross_product ) @ ( B @ ( A @ ( C @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( D @ ( C @ ( B @ ( A @ ordered_pair ) @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rotate3) ).

thf(338,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ rotate @ ( B @ ( A @ ( C @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( universal_class @ ( universal_class @ ( universal_class @ cross_product ) @ cross_product ) @ ( B @ ( A @ ( C @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( D @ ( C @ ( B @ ( A @ ordered_pair ) @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[87]) ).

thf(96,axiom,
    ! [B: $i,A: $i] :
      ( ~ ( A @ domain_of @ ( B @ member ) )
      | ( ( universal_class @ ( B @ singleton @ ( A @ restrict ) ) )
       != null_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',domain1) ).

thf(359,plain,
    ! [B: $i,A: $i] :
      ( ~ ( A @ domain_of @ ( B @ member ) )
      | ( ( universal_class @ ( B @ singleton @ ( A @ restrict ) ) )
       != null_class ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[96]) ).

thf(86,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ singleton @ ( A @ unordered_pair ) @ ( A @ singleton @ unordered_pair ) )
      = ( B @ ( A @ ordered_pair ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',ordered_pair) ).

thf(336,plain,
    ! [B: $i,A: $i] :
      ( ( B @ singleton @ ( A @ unordered_pair ) @ ( A @ singleton @ unordered_pair ) )
      = ( B @ ( A @ ordered_pair ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[86]) ).

thf(14,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ cross_product ) @ intersection ) )
      = ( B @ ( A @ ( C @ restrict ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',restriction2) ).

thf(175,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ ( A @ cross_product ) @ intersection ) )
      = ( B @ ( A @ ( C @ restrict ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[14]) ).

thf(77,axiom,
    ! [B: $i,A: $i] :
      ( ( successor_relation @ ( B @ ( A @ ordered_pair ) @ member ) )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) )
      | ( ( A @ successor )
       != B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',successor_relation3) ).

thf(314,plain,
    ! [B: $i,A: $i] :
      ( ( successor_relation @ ( B @ ( A @ ordered_pair ) @ member ) )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) )
      | ( ( A @ successor )
       != B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[77]) ).

thf(137,axiom,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != null_class )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_to_unordered_pair_axiom1) ).

thf(450,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
       != null_class )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[137]) ).

thf(98,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( A = C )
      | ( A = B )
      | ~ ( C @ ( B @ unordered_pair ) @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',unordered_pair_member) ).

thf(363,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( A = C )
      | ( A = B )
      | ~ ( C @ ( B @ unordered_pair ) @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[98]) ).

thf(34,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( A @ subclass ) )
      | ~ ( C @ ( B @ subclass ) )
      | ~ ( B @ ( A @ subclass ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',transitivity_of_subclass) ).

thf(218,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( A @ subclass ) )
      | ~ ( C @ ( B @ subclass ) )
      | ~ ( B @ ( A @ subclass ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[34]) ).

thf(49,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ cross_product ) @ ( A @ intersection ) )
      = ( C @ ( B @ ( A @ restrict ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',restriction1) ).

thf(250,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( B @ cross_product ) @ ( A @ intersection ) )
      = ( C @ ( B @ ( A @ restrict ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[49]) ).

thf(40,axiom,
    ! [A: $i] :
      ( ( A @ ( element_relation @ inverse @ compose ) @ diagonalise @ ( A @ domain_of @ intersection ) )
      = ( A @ cantor ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cantor_class) ).

thf(231,plain,
    ! [A: $i] :
      ( ( A @ ( element_relation @ inverse @ compose ) @ diagonalise @ ( A @ domain_of @ intersection ) )
      = ( A @ cantor ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[40]) ).

thf(73,axiom,
    ! [A: $i] :
      ( ( A @ ( A @ ( choice @ apply ) @ member ) )
      | ( A = null_class )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',choice2) ).

thf(304,plain,
    ! [A: $i] :
      ( ( A @ ( A @ ( choice @ apply ) @ member ) )
      | ( A = null_class )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[73]) ).

thf(115,axiom,
    universal_class @ ( omega @ member ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',omega_in_universal) ).

thf(401,plain,
    universal_class @ ( omega @ member ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[115]) ).

thf(66,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( C = B )
      | ( C = A )
      | ~ ( universal_class @ ( C @ member ) )
      | ( ( B @ ( A @ unordered_pair ) )
       != ( C @ singleton ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',singleton_in_unordered_pair3) ).

thf(290,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C = B )
      | ( C = A )
      | ~ ( universal_class @ ( C @ member ) )
      | ( ( B @ ( A @ unordered_pair ) )
       != ( C @ singleton ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[66]) ).

thf(59,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( B = C )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( C @ ( B @ ordered_pair ) @ member ) )
      | ( ( B @ ( A @ unordered_pair ) )
       != ( C @ ( A @ unordered_pair ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',left_cancellation) ).

thf(272,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B = C )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( C @ ( B @ ordered_pair ) @ member ) )
      | ( ( B @ ( A @ unordered_pair ) )
       != ( C @ ( A @ unordered_pair ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[59]) ).

thf(65,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ ( C @ homomorphism ) ) )
      | ( ( B @ ( A @ ( C @ not_homomorphism2 ) ) @ ( C @ apply ) @ ( B @ ( A @ ( C @ not_homomorphism1 ) ) @ ( C @ apply ) @ ordered_pair ) @ ( B @ apply ) )
       != ( B @ ( A @ ( C @ not_homomorphism2 ) ) @ ( B @ ( A @ ( C @ not_homomorphism1 ) ) @ ordered_pair ) @ ( A @ apply ) @ ( C @ apply ) ) )
      | ~ ( B @ ( A @ ( C @ compatible ) ) )
      | ~ ( B @ operation )
      | ~ ( A @ operation ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',homomorphism6) ).

thf(287,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ ( A @ ( C @ homomorphism ) ) )
      | ( ( B @ ( A @ ( C @ not_homomorphism2 ) ) @ ( C @ apply ) @ ( B @ ( A @ ( C @ not_homomorphism1 ) ) @ ( C @ apply ) @ ordered_pair ) @ ( B @ apply ) )
       != ( B @ ( A @ ( C @ not_homomorphism2 ) ) @ ( B @ ( A @ ( C @ not_homomorphism1 ) ) @ ordered_pair ) @ ( A @ apply ) @ ( C @ apply ) ) )
      | ~ ( B @ ( A @ ( C @ compatible ) ) )
      | ~ ( B @ operation )
      | ~ ( A @ operation ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[65]) ).

thf(3,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) )
      = ( A @ ( B @ unordered_pair ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',commutativity_of_unordered_pair) ).

thf(151,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ unordered_pair ) )
      = ( A @ ( B @ unordered_pair ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[3]) ).

thf(71,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ ( B @ not_subclass_element ) @ member ) )
      | ( B = A )
      | ~ ( B @ ( B @ ( A @ not_subclass_element ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',equality3) ).

thf(300,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ ( B @ not_subclass_element ) @ member ) )
      | ( B = A )
      | ~ ( B @ ( B @ ( A @ not_subclass_element ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[71]) ).

thf(136,axiom,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ ( B @ not_subclass_element ) @ member ) )
      | ( A @ ( B @ ( A @ not_subclass_element ) @ member ) )
      | ( A = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',equality1) ).

thf(447,plain,
    ! [B: $i,A: $i] :
      ( ( B @ ( A @ ( B @ not_subclass_element ) @ member ) )
      | ( A @ ( B @ ( A @ not_subclass_element ) @ member ) )
      | ( A = B ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[136]) ).

thf(129,axiom,
    ! [A: $i] :
      ( ( universal_class @ ( A @ member ) )
      | ( ( A @ member_of @ singleton )
       != A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',corollary_2_to_singletons_are_sets) ).

thf(432,plain,
    ! [A: $i] :
      ( ( universal_class @ ( A @ member ) )
      | ( ( A @ member_of @ singleton )
       != A ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[129]) ).

thf(1,negated_conjecture,
    ~ ( universal_class @ ( y @ ( x @ ordered_pair ) @ member ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_ordered_pair_is_set_1) ).

thf(146,plain,
    ~ ( universal_class @ ( y @ ( x @ ordered_pair ) @ member ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[1]) ).

thf(118,axiom,
    ! [A: $i] :
      ( ( A @ function )
      | ~ ( identity_relation @ ( A @ inverse @ ( A @ compose ) @ subclass ) )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( A @ subclass ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',function3) ).

thf(405,plain,
    ! [A: $i] :
      ( ( A @ function )
      | ~ ( identity_relation @ ( A @ inverse @ ( A @ compose ) @ subclass ) )
      | ~ ( universal_class @ ( universal_class @ cross_product ) @ ( A @ subclass ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[118]) ).

thf(22,axiom,
    ! [A: $i] :
      ( ( A @ function )
      | ~ ( A @ one_to_one ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',one_to_one1) ).

thf(190,plain,
    ! [A: $i] :
      ( ( A @ function )
      | ~ ( A @ one_to_one ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[22]) ).

thf(18,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ operation )
      | ~ ( C @ ( B @ ( A @ homomorphism ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',homomorphism2) ).

thf(183,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ operation )
      | ~ ( C @ ( B @ ( A @ homomorphism ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[18]) ).

thf(125,axiom,
    ! [A: $i] :
      ( ( A @ ( A @ regular @ member ) )
      | ( A = null_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',regularity1) ).

thf(422,plain,
    ! [A: $i] :
      ( ( A @ ( A @ regular @ member ) )
      | ( A = null_class ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[125]) ).

thf(10,axiom,
    ! [A: $i] :
      ( ( A @ ( A @ unordered_pair ) )
      = ( A @ singleton ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',singleton_set) ).

thf(168,plain,
    ! [A: $i] :
      ( ( A @ ( A @ unordered_pair ) )
      = ( A @ singleton ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[10]) ).

thf(54,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ ( A @ ( C @ ( B @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( D @ rotate @ ( C @ ( B @ ( A @ ordered_pair ) @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rotate2) ).

thf(262,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( D @ ( A @ ( C @ ( B @ ordered_pair ) @ ordered_pair ) @ member ) )
      | ~ ( D @ rotate @ ( C @ ( B @ ( A @ ordered_pair ) @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[54]) ).

thf(82,axiom,
    ! [A: $i] :
      ~ ( null_class @ ( A @ member ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',existence_of_null_class) ).

thf(326,plain,
    ! [A: $i] :
      ~ ( null_class @ ( A @ member ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[82]) ).

thf(45,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ operation )
      | ~ ( C @ ( B @ ( A @ homomorphism ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',homomorphism1) ).

thf(242,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( B @ operation )
      | ~ ( C @ ( B @ ( A @ homomorphism ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[45]) ).

thf(68,axiom,
    ! [A: $i] :
      ( ( A = null_class )
      | ( ( null_class @ ( A @ not_subclass_element ) @ singleton )
        = A )
      | ( A @ ( null_class @ ( A @ not_subclass_element ) @ singleton @ complement @ intersection ) @ ( null_class @ ( A @ ( null_class @ ( A @ not_subclass_element ) @ singleton @ complement @ intersection ) @ not_subclass_element ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',number_of_elements_in_class) ).

thf(294,plain,
    ! [A: $i] :
      ( ( A = null_class )
      | ( ( null_class @ ( A @ not_subclass_element ) @ singleton )
        = A )
      | ( A @ ( null_class @ ( A @ not_subclass_element ) @ singleton @ complement @ intersection ) @ ( null_class @ ( A @ ( null_class @ ( A @ not_subclass_element ) @ singleton @ complement @ intersection ) @ not_subclass_element ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[68]) ).

thf(25,axiom,
    ! [A: $i] :
      ( ( A @ operation )
      | ~ ( A @ domain_of @ domain_of @ ( A @ range_of @ subclass ) )
      | ( ( A @ domain_of @ domain_of @ ( A @ domain_of @ domain_of @ cross_product ) )
       != ( A @ domain_of ) )
      | ~ ( A @ function ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',operation4) ).

thf(195,plain,
    ! [A: $i] :
      ( ( A @ operation )
      | ~ ( A @ domain_of @ domain_of @ ( A @ range_of @ subclass ) )
      | ( ( A @ domain_of @ domain_of @ ( A @ domain_of @ domain_of @ cross_product ) )
       != ( A @ domain_of ) )
      | ~ ( A @ function ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[25]) ).

thf(131,axiom,
    ! [B: $i,A: $i] :
      ( ( universal_class @ ( B @ ( A @ image ) @ member ) )
      | ~ ( universal_class @ ( B @ member ) )
      | ~ ( A @ function ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',replacement) ).

thf(437,plain,
    ! [B: $i,A: $i] :
      ( ( universal_class @ ( B @ ( A @ image ) @ member ) )
      | ~ ( universal_class @ ( B @ member ) )
      | ~ ( A @ function ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[131]) ).

thf(114,axiom,
    ! [A: $i] : ( universal_class @ ( A @ subclass ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',class_elements_are_sets) ).

thf(400,plain,
    ! [A: $i] : ( universal_class @ ( A @ subclass ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[114]) ).

thf(112,axiom,
    ! [B: $i,A: $i] :
      ( ( A = B )
      | ~ ( B @ singleton @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',only_member_in_singleton) ).

thf(395,plain,
    ! [B: $i,A: $i] :
      ( ( A = B )
      | ~ ( B @ singleton @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[112]) ).

thf(127,axiom,
    ! [B: $i,A: $i] :
      ( ( A @ ( B @ unordered_pair ) @ ( A @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',unordered_pair3) ).

thf(427,plain,
    ! [B: $i,A: $i] :
      ( ( A @ ( B @ unordered_pair ) @ ( A @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[127]) ).

thf(141,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( A @ member ) )
      | ~ ( C @ ( B @ intersection ) @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',intersection2) ).

thf(459,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( C @ ( A @ member ) )
      | ~ ( C @ ( B @ intersection ) @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[141]) ).

thf(61,axiom,
    ! [B: $i,A: $i] :
      ( ( universal_class @ ( B @ ( A @ restrict ) ) @ range_of )
      = ( B @ ( A @ image ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',image) ).

thf(277,plain,
    ! [B: $i,A: $i] :
      ( ( universal_class @ ( B @ ( A @ restrict ) ) @ range_of )
      = ( B @ ( A @ image ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[61]) ).

thf(101,axiom,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
        = ( B @ singleton ) )
      | ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',unordered_pair_equals_singleton2) ).

thf(369,plain,
    ! [B: $i,A: $i] :
      ( ( ( B @ ( A @ unordered_pair ) )
        = ( B @ singleton ) )
      | ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[101]) ).

thf(8,axiom,
    ! [B: $i,A: $i] :
      ( ( A = B )
      | ~ ( A @ ( B @ subclass ) )
      | ~ ( B @ ( A @ subclass ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',subclass_implies_equal) ).

thf(163,plain,
    ! [B: $i,A: $i] :
      ( ( A = B )
      | ~ ( A @ ( B @ subclass ) )
      | ~ ( B @ ( A @ subclass ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[8]) ).

thf(27,axiom,
    ! [C: $i,B: $i,A: $i] :
      ( ( null_class @ ( C @ ( B @ singleton @ ( A @ restrict ) ) @ not_subclass_element ) @ second )
      = ( C @ ( B @ ( A @ range ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',range) ).

thf(200,plain,
    ! [C: $i,B: $i,A: $i] :
      ( ( null_class @ ( C @ ( B @ singleton @ ( A @ restrict ) ) @ not_subclass_element ) @ second )
      = ( C @ ( B @ ( A @ range ) ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[27]) ).

thf(38,axiom,
    ! [A: $i] :
      ( ( identity_relation @ ( A @ intersection ) @ domain_of @ complement )
      = ( A @ diagonalise ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',diagonalisation) ).

thf(227,plain,
    ! [A: $i] :
      ( ( identity_relation @ ( A @ intersection ) @ domain_of @ complement )
      = ( A @ diagonalise ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[38]) ).

thf(145,axiom,
    ! [A: $i] :
      ( ( universal_class @ ( A @ sum_class @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',sum_class2) ).

thf(469,plain,
    ! [A: $i] :
      ( ( universal_class @ ( A @ sum_class @ member ) )
      | ~ ( universal_class @ ( A @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[145]) ).

thf(75,axiom,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( C @ ( A @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cartesian_product1) ).

thf(309,plain,
    ! [D: $i,C: $i,B: $i,A: $i] :
      ( ( C @ ( A @ member ) )
      | ~ ( D @ ( C @ cross_product ) @ ( B @ ( A @ ordered_pair ) @ member ) ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[75]) ).

thf(36,axiom,
    ! [A: $i] :
      ( ( ( A @ domain_of @ domain_of @ ( A @ domain_of @ domain_of @ cross_product ) )
        = ( A @ domain_of ) )
      | ~ ( A @ operation ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',operation2) ).

thf(222,plain,
    ! [A: $i] :
      ( ( ( A @ domain_of @ domain_of @ ( A @ domain_of @ domain_of @ cross_product ) )
        = ( A @ domain_of ) )
      | ~ ( A @ operation ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[36]) ).

thf(139,axiom,
    ! [B: $i,A: $i] :
      ( ( universal_class @ ( B @ member ) )
      | ( universal_class @ ( A @ member ) )
      | ( ( B @ ( A @ unordered_pair ) )
        = null_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',null_unordered_pair) ).

thf(454,plain,
    ! [B: $i,A: $i] :
      ( ( universal_class @ ( B @ member ) )
      | ( universal_class @ ( A @ member ) )
      | ( ( B @ ( A @ unordered_pair ) )
        = null_class ) ),
    inference(defexp_and_simp_and_etaexpand,[status(thm)],[139]) ).

thf(485,plain,
    $false,
    inference(e,[status(thm)],[267,409,347,249,352,170,247,379,269,202,384,340,153,174,185,257,389,372,344,357,189,284,416,216,443,321,238,293,453,411,265,206,307,233,439,220,366,334,349,297,429,275,192,407,229,252,435,461,324,156,403,328,225,393,457,343,244,311,398,298,425,166,148,264,279,180,402,259,413,281,204,391,445,382,466,236,181,159,187,172,419,377,362,318,303,387,367,323,213,240,155,198,374,255,209,355,194,177,331,441,463,338,359,336,175,314,450,363,218,250,231,304,401,290,272,287,151,300,447,432,146,405,190,183,422,168,262,326,242,294,195,437,400,395,427,459,277,369,163,200,227,469,309,222,454]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : SET025-7 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.08  % Command  : java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39
% 0.15/10.41  % Computer : n026.cluster.edu
% 0.15/10.41  % Model    : x86_64 x86_64
% 0.15/10.41  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/10.41  % Memory   : 8046.5625MB
% 0.15/10.41  % OS       : Linux 6.8.0-71-generic
% 0.15/10.41  % CPULimit : 300
% 0.15/10.41  % WCLimit  : 300
% 0.15/10.41  % DateTime : Sat Sep 26 06:57:21 UTC 2026
% 0.15/10.41  % CPUTime  : 
% 0.15/10.41  Running java -Xss128m -Xmx2g -Xms1g -jar /export/starexec/sandbox/solver/bin/leo3.jar /export/starexec/sandbox/benchmark/theBenchmark.p -t 300 -p  --atp eprover=/export/starexec/sandbox/solver/bin/externals/eprover --instantiate 39
% 0.18/10.71  % [INFO] 	 Parsing problem /export/starexec/sandbox/benchmark/theBenchmark.p ... 
% 0.18/10.88  % [INFO] 	 Parsing done (169ms). 
% 0.18/10.89  % [INFO] 	 Running in sequential loop mode. 
% 1.86/11.10  % [INFO] 	 eprover registered as external prover. 
% 1.86/11.11  % [INFO] 	 Scanning for conjecture ... 
% 2.28/11.23  % [INFO] 	 Found a conjecture (or negated_conjecture) and 144 axioms. Running axiom selection ... 
% 2.51/11.34  % [INFO] 	 Axiom selection finished. Selected 144 axioms (removed 0 axioms). 
% 2.87/11.48  % [INFO] 	 Problem is propositional (TPTP CNF). 
% 2.87/11.49  % [INFO] 	 Type checking passed. 
% 3.15/11.50  % [CONFIG] 	 Using configuration: timeout(300) with strategy<name(default),share(1.0),primSubst(3),sos(false),unifierCount(4),uniDepth(8),boolExt(true),choice(true),renaming(true),funcspec(false), domConstr(0),specialInstances(39),restrictUniAttempts(true),termOrdering(CPO)>.  Searching for refutation ... 
% 6.85/12.60  % External prover 'e' found a proof!
% 6.85/12.60  % [INFO] 	 Killing All external provers ... 
% 6.85/12.60  % Time passed: 2095ms (effective reasoning time: 1709ms)
% 6.85/12.60  % Axioms used in derivation (144): operation4, number_of_elements_in_class, equal_implies_subclass1, complement1, one_to_one2, null_unordered_pair, omega_is_inductive1, cartesian_product4, rotate2, homomorphism4, range_of, singleton_in_unordered_pair3, function3, corollary_to_set_in_its_singleton, regularity1, singleton_set, identity_relation, commutativity_of_unordered_pair, union, flip3, element_relation2, unordered_pairs_in_universal, corollary_of_null_class_is_subclass, equality1, compose2, homomorphism3, compatible3, symmetric_difference, cartesian_product1, image, replacement, singletons_are_sets, not_subclass_members1, existence_of_null_class, ordered_pair, successor_relation1, successor, unordered_pair_equals_singleton2, corollary_to_unordered_pair_axiom2, domain, homomorphism1, singleton_in_unordered_pair1, singleton_identified_by_element2, member_of_non_singleton_unique1, null_class_is_a_set, member_exists2, one_to_one3, single_valued_class1, compose3, omega_is_inductive2, rotate1, left_cancellation, choice1, power_class2, equality2, regularity2, equal_implies_subclass2, element_relation3, homomorphism6, intersection1, flip2, two_subsets_of_singleton, corollary_1_to_singletons_are_sets, inverse, corollary_1_to_number_of_elements_in_class, corollary_to_unordered_pair_axiom3, sum_class_definition, inductive2, inductive1, compatible2, sum_class2, subclass_members, cartesian_product2, only_member_in_singleton, not_subclass_members2, successor_relation3, member_exists3, domain2, function1, right_cancellation, compatible4, property_of_singletons2, intersection3, singleton_identified_by_element1, corollary_to_unordered_pair_axiom1, member_of_non_singleton_unique2, corollary_2_to_singletons_are_sets, single_valued_class2, unordered_pair_member, apply, corollary_2_to_number_of_elements_in_class, element_relation1, transitivity_of_subclass, operation1, member_of_singleton_is_unique, null_class_is_subclass, range, equality4, restriction1, cartesian_product3, flip1, homomorphism5, compatible1, unordered_pair2, operation2, member_exists4, rotate3, property_of_singletons1, singleton_in_unordered_pair2, complement2, one_to_one1, subclass_implies_equal, function2, cantor_class, successor_relation2, set_in_its_singleton, domain1, unordered_pair_is_subset, null_class_in_its_singleton, corollary_1_to_cartesian_product, null_class_is_unique, restriction2, omega_in_universal, class_elements_are_sets, diagonalisation, unordered_pairs_and_singletons, intersection2, inductive3, corollary_2_to_unordered_pair, equality3, corollary_1_to_unordered_pair, singleton_is_null_class, operation3, subclass_is_reflexive, homomorphism2, power_class_definition, unordered_pair_equals_singleton1, corollary_2_to_cartesian_product, choice2, unordered_pair3, special_classes_lemma, subset_relation, compose1, member_exists1
% 6.85/12.60  % No. of inferences in proof: 291
% 6.85/12.60  % SZS status Unsatisfiable for /export/starexec/sandbox/benchmark/theBenchmark.p : 2095 ms resp. 1709 ms w/o parsing
% 7.18/12.74  % SZS output start Refutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 7.18/12.74  % [INFO] 	 Killing All external provers ... 
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