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LEO-II---2.3.1.THM-CRf.s

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%------------------------------------------------------------------------------
% File     : LEO-II---2.3.1
% Problem  : SET082+1 : TPTP v9.3.1. Bugfixed v5.4.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p

% Computer : n005.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 : Wed Oct  7 10:39:26 AM UTC 2026

% Result   : Theorem 0.08s 0.25s
% Output   : CNFRefutation 0.08s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   19
%            Number of leaves      :   15
% Syntax   : Number of formulae    :  244 ( 115 unt;   0 typ;   0 def)
%            Number of atoms       : 1497 ( 461 equ;   0 cnn)
%            Maximal formula atoms :    4 (   6 avg)
%            Number of connectives : 2941 ( 739   ~; 459   |;  21   &;1685   @)
%                                         (  21 <=>;  16  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    9 (   4 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   39 (  36 usr;   8 con; 0-3 aty)
%            Number of variables   :  572 (   0   ^; 566   !;   6   ?; 572   :)

% Comments : 
%------------------------------------------------------------------------------
thf(tp_apply,type,
    apply: $i > $i > $i ).

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

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

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

thf(tp_disjoint,type,
    disjoint: $i > $i > $o ).

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

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

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

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

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

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

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

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

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

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

thf(tp_member,type,
    member: $i > $i > $o ).

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

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

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

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

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

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

thf(tp_sK1_X,type,
    sK1_X: $i ).

thf(tp_sK2_SY47,type,
    sK2_SY47: $i > $i ).

thf(tp_sK3_SY50,type,
    sK3_SY50: $i > $i > $i ).

thf(tp_sK4_SY56,type,
    sK4_SY56: $i > $i > $i ).

thf(tp_sK5_SY51,type,
    sK5_SY51: $i > $i > $i ).

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

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

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

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

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

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

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

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

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

thf(3,axiom,
    ! [X: $i] :
      ( ( X != null_class )
     => ? [U: $i] :
          ( ( member @ U @ universal_class )
          & ( member @ U @ X )
          & ( disjoint @ U @ X ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',regularity) ).

thf(4,axiom,
    ! [X: $i,Y: $i] :
      ( ( disjoint @ X @ Y )
    <=> ! [U: $i] :
          ~ ( ( member @ U @ X )
            & ( member @ U @ Y ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',disjoint_defn) ).

thf(10,axiom,
    ! [U: $i] :
      ( ( member @ U @ universal_class )
     => ( member @ ( power_class @ U ) @ universal_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',power_class) ).

thf(12,axiom,
    ! [X: $i] :
      ( ( member @ X @ universal_class )
     => ( member @ ( sum_class @ X ) @ universal_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',sum_class) ).

thf(13,axiom,
    ! [U: $i,X: $i] :
      ( ( member @ U @ ( sum_class @ X ) )
    <=> ? [Y: $i] :
          ( ( member @ U @ Y )
          & ( member @ Y @ X ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',sum_class_defn) ).

thf(22,axiom,
    ! [X: $i,Y: $i,Z: $i] :
      ( ( member @ Z @ ( union @ X @ Y ) )
    <=> ( ( member @ Z @ X )
        | ( member @ Z @ Y ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',union_defn) ).

thf(28,axiom,
    ! [X: $i] :
      ~ ( member @ X @ null_class ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',null_class_defn) ).

thf(30,axiom,
    ! [X: $i,Z: $i] :
      ( ( member @ Z @ ( complement @ X ) )
    <=> ( ( member @ Z @ universal_class )
        & ~ ( member @ Z @ X ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',complement) ).

thf(31,axiom,
    ! [X: $i,Y: $i,Z: $i] :
      ( ( member @ Z @ ( intersection @ X @ Y ) )
    <=> ( ( member @ Z @ X )
        & ( member @ Z @ Y ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',intersection) ).

thf(38,axiom,
    ! [X: $i] :
      ( ( singleton @ X )
      = ( unordered_pair @ X @ X ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',singleton_set_defn) ).

thf(39,axiom,
    ! [X: $i,Y: $i] : ( member @ ( unordered_pair @ X @ Y ) @ universal_class ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',unordered_pair) ).

thf(40,axiom,
    ! [U: $i,X: $i,Y: $i] :
      ( ( member @ U @ ( unordered_pair @ X @ Y ) )
    <=> ( ( member @ U @ universal_class )
        & ( ( U = X )
          | ( U = Y ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',unordered_pair_defn) ).

thf(42,axiom,
    ! [X: $i] : ( subclass @ X @ universal_class ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',class_elements_are_sets) ).

thf(43,axiom,
    ! [X: $i,Y: $i] :
      ( ( subclass @ X @ Y )
    <=> ! [U: $i] :
          ( ( member @ U @ X )
         => ( member @ U @ Y ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',subclass_defn) ).

thf(44,conjecture,
    ! [X: $i] :
      ( ~ ( member @ X @ universal_class )
     => ( ( singleton @ X )
        = null_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',singleton_is_null_class) ).

thf(45,negated_conjecture,
    ( ( ! [X: $i] :
          ( ~ ( member @ X @ universal_class )
         => ( ( singleton @ X )
            = null_class ) ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[44]) ).

thf(46,plain,
    ( ( ! [X: $i] :
          ( ~ ( member @ X @ universal_class )
         => ( ( singleton @ X )
            = null_class ) ) )
    = $false ),
    inference(unfold_def,[status(thm)],[45]) ).

thf(47,plain,
    ( ( ! [X: $i] :
          ( ( X != null_class )
         => ? [U: $i] :
              ( ( member @ U @ universal_class )
              & ( member @ U @ X )
              & ( disjoint @ U @ X ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[3]) ).

thf(48,plain,
    ( ( ! [X: $i,Y: $i] :
          ( ( disjoint @ X @ Y )
        <=> ! [U: $i] :
              ~ ( ( member @ U @ X )
                & ( member @ U @ Y ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[4]) ).

thf(49,plain,
    ( ( ! [U: $i] :
          ( ( member @ U @ universal_class )
         => ( member @ ( power_class @ U ) @ universal_class ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[10]) ).

thf(50,plain,
    ( ( ! [X: $i] :
          ( ( member @ X @ universal_class )
         => ( member @ ( sum_class @ X ) @ universal_class ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[12]) ).

thf(51,plain,
    ( ( ! [U: $i,X: $i] :
          ( ( member @ U @ ( sum_class @ X ) )
        <=> ? [Y: $i] :
              ( ( member @ U @ Y )
              & ( member @ Y @ X ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[13]) ).

thf(52,plain,
    ( ( ! [X: $i,Y: $i,Z: $i] :
          ( ( member @ Z @ ( union @ X @ Y ) )
        <=> ( ( member @ Z @ X )
            | ( member @ Z @ Y ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[22]) ).

thf(53,plain,
    ( ( ! [X: $i] :
          ~ ( member @ X @ null_class ) )
    = $true ),
    inference(unfold_def,[status(thm)],[28]) ).

thf(54,plain,
    ( ( ! [X: $i,Z: $i] :
          ( ( member @ Z @ ( complement @ X ) )
        <=> ( ( member @ Z @ universal_class )
            & ~ ( member @ Z @ X ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[30]) ).

thf(55,plain,
    ( ( ! [X: $i,Y: $i,Z: $i] :
          ( ( member @ Z @ ( intersection @ X @ Y ) )
        <=> ( ( member @ Z @ X )
            & ( member @ Z @ Y ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[31]) ).

thf(56,plain,
    ( ( ! [X: $i] :
          ( ( singleton @ X )
          = ( unordered_pair @ X @ X ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[38]) ).

thf(57,plain,
    ( ( ! [X: $i,Y: $i] : ( member @ ( unordered_pair @ X @ Y ) @ universal_class ) )
    = $true ),
    inference(unfold_def,[status(thm)],[39]) ).

thf(58,plain,
    ( ( ! [U: $i,X: $i,Y: $i] :
          ( ( member @ U @ ( unordered_pair @ X @ Y ) )
        <=> ( ( member @ U @ universal_class )
            & ( ( U = X )
              | ( U = Y ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[40]) ).

thf(59,plain,
    ( ( ! [X: $i] : ( subclass @ X @ universal_class ) )
    = $true ),
    inference(unfold_def,[status(thm)],[42]) ).

thf(60,plain,
    ( ( ! [X: $i,Y: $i] :
          ( ( subclass @ X @ Y )
        <=> ! [U: $i] :
              ( ( member @ U @ X )
             => ( member @ U @ Y ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[43]) ).

thf(61,plain,
    ( ( ~ ( member @ sK1_X @ universal_class )
     => ( ( singleton @ sK1_X )
        = null_class ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[46]) ).

thf(62,plain,
    ( ( ~ ( member @ sK1_X @ universal_class ) )
    = $true ),
    inference(standard_cnf,[status(thm)],[61]) ).

thf(63,plain,
    ( ( ( singleton @ sK1_X )
      = null_class )
    = $false ),
    inference(standard_cnf,[status(thm)],[61]) ).

thf(64,plain,
    ( ( ( singleton @ sK1_X )
     != null_class )
    = $true ),
    inference(polarity_switch,[status(thm)],[63]) ).

thf(65,plain,
    ( ( ! [X: $i,Y: $i] :
          ( ( subclass @ X @ Y )
        <=> ! [U: $i] :
              ( ( member @ U @ X )
             => ( member @ U @ Y ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[60]) ).

thf(66,plain,
    ( ( ! [X: $i] : ( subclass @ X @ universal_class ) )
    = $true ),
    inference(copy,[status(thm)],[59]) ).

thf(67,plain,
    ( ( ! [U: $i,X: $i,Y: $i] :
          ( ( member @ U @ ( unordered_pair @ X @ Y ) )
        <=> ( ( member @ U @ universal_class )
            & ( ( U = X )
              | ( U = Y ) ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[58]) ).

thf(68,plain,
    ( ( ! [X: $i,Y: $i] : ( member @ ( unordered_pair @ X @ Y ) @ universal_class ) )
    = $true ),
    inference(copy,[status(thm)],[57]) ).

thf(69,plain,
    ( ( ! [X: $i] :
          ( ( singleton @ X )
          = ( unordered_pair @ X @ X ) ) )
    = $true ),
    inference(copy,[status(thm)],[56]) ).

thf(70,plain,
    ( ( ! [X: $i,Y: $i,Z: $i] :
          ( ( member @ Z @ ( intersection @ X @ Y ) )
        <=> ( ( member @ Z @ X )
            & ( member @ Z @ Y ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[55]) ).

thf(71,plain,
    ( ( ! [X: $i,Z: $i] :
          ( ( member @ Z @ ( complement @ X ) )
        <=> ( ( member @ Z @ universal_class )
            & ~ ( member @ Z @ X ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[54]) ).

thf(72,plain,
    ( ( ! [X: $i] :
          ~ ( member @ X @ null_class ) )
    = $true ),
    inference(copy,[status(thm)],[53]) ).

thf(73,plain,
    ( ( ! [X: $i,Y: $i,Z: $i] :
          ( ( member @ Z @ ( union @ X @ Y ) )
        <=> ( ( member @ Z @ X )
            | ( member @ Z @ Y ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[52]) ).

thf(74,plain,
    ( ( ! [U: $i,X: $i] :
          ( ( member @ U @ ( sum_class @ X ) )
        <=> ? [Y: $i] :
              ( ( member @ U @ Y )
              & ( member @ Y @ X ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[51]) ).

thf(75,plain,
    ( ( ! [X: $i] :
          ( ( member @ X @ universal_class )
         => ( member @ ( sum_class @ X ) @ universal_class ) ) )
    = $true ),
    inference(copy,[status(thm)],[50]) ).

thf(76,plain,
    ( ( ! [U: $i] :
          ( ( member @ U @ universal_class )
         => ( member @ ( power_class @ U ) @ universal_class ) ) )
    = $true ),
    inference(copy,[status(thm)],[49]) ).

thf(77,plain,
    ( ( ! [X: $i,Y: $i] :
          ( ( disjoint @ X @ Y )
        <=> ! [U: $i] :
              ~ ( ( member @ U @ X )
                & ( member @ U @ Y ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[48]) ).

thf(78,plain,
    ( ( ! [X: $i] :
          ( ( X != null_class )
         => ? [U: $i] :
              ( ( member @ U @ universal_class )
              & ( member @ U @ X )
              & ( disjoint @ U @ X ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[47]) ).

thf(79,plain,
    ( ( ~ ( member @ sK1_X @ universal_class ) )
    = $true ),
    inference(copy,[status(thm)],[62]) ).

thf(80,plain,
    ( ( ( singleton @ sK1_X )
     != null_class )
    = $true ),
    inference(copy,[status(thm)],[64]) ).

thf(81,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ~ ( ~ ( ~ ( member @ SX2 @ ( union @ SX0 @ SX1 ) )
                | ( member @ SX2 @ SX0 )
                | ( member @ SX2 @ SX1 ) )
            | ~ ( ~ ( ( member @ SX2 @ SX0 )
                    | ( member @ SX2 @ SX1 ) )
                | ( member @ SX2 @ ( union @ SX0 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[73]) ).

thf(82,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ~ ( subclass @ SX0 @ SX1 )
                | ! [SX2: $i] :
                    ( ~ ( member @ SX2 @ SX0 )
                    | ( member @ SX2 @ SX1 ) ) )
            | ~ ( ~ ! [SX2: $i] :
                      ( ~ ( member @ SX2 @ SX0 )
                      | ( member @ SX2 @ SX1 ) )
                | ( subclass @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[65]) ).

thf(83,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ~ ( member @ SX1 @ ( complement @ SX0 ) )
                | ~ ( ~ ( member @ SX1 @ universal_class )
                    | ~ ~ ( member @ SX1 @ SX0 ) ) )
            | ~ ( ~ ~ ( ~ ( member @ SX1 @ universal_class )
                      | ~ ~ ( member @ SX1 @ SX0 ) )
                | ( member @ SX1 @ ( complement @ SX0 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[71]) ).

thf(84,plain,
    ( ( ! [SX0: $i] :
          ( ~ ( member @ SX0 @ universal_class )
          | ( member @ ( sum_class @ SX0 ) @ universal_class ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[75]) ).

thf(85,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ~ ( member @ SX0 @ ( sum_class @ SX1 ) )
                | ~ ! [SX2: $i] :
                      ~ ~ ( ~ ( member @ SX0 @ SX2 )
                          | ~ ( member @ SX2 @ SX1 ) ) )
            | ~ ( ~ ~ ! [SX2: $i] :
                        ~ ~ ( ~ ( member @ SX0 @ SX2 )
                            | ~ ( member @ SX2 @ SX1 ) )
                | ( member @ SX0 @ ( sum_class @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[74]) ).

thf(86,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ~ ( ~ ( ~ ( member @ SX0 @ ( unordered_pair @ SX1 @ SX2 ) )
                | ~ ( ~ ( member @ SX0 @ universal_class )
                    | ~ ( ( SX0 = SX1 )
                        | ( SX0 = SX2 ) ) ) )
            | ~ ( ~ ~ ( ~ ( member @ SX0 @ universal_class )
                      | ~ ( ( SX0 = SX1 )
                          | ( SX0 = SX2 ) ) )
                | ( member @ SX0 @ ( unordered_pair @ SX1 @ SX2 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[67]) ).

thf(87,plain,
    ( ( ! [SX0: $i] :
          ( ~ ( member @ SX0 @ universal_class )
          | ( member @ ( power_class @ SX0 ) @ universal_class ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[76]) ).

thf(88,plain,
    ( ( ! [SX0: $i,SX1: $i,SX2: $i] :
          ~ ( ~ ( ~ ( member @ SX2 @ ( intersection @ SX0 @ SX1 ) )
                | ~ ( ~ ( member @ SX2 @ SX0 )
                    | ~ ( member @ SX2 @ SX1 ) ) )
            | ~ ( ~ ~ ( ~ ( member @ SX2 @ SX0 )
                      | ~ ( member @ SX2 @ SX1 ) )
                | ( member @ SX2 @ ( intersection @ SX0 @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[70]) ).

thf(89,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ~ ( disjoint @ SX0 @ SX1 )
                | ! [SX2: $i] :
                    ~ ~ ( ~ ( member @ SX2 @ SX0 )
                        | ~ ( member @ SX2 @ SX1 ) ) )
            | ~ ( ~ ! [SX2: $i] :
                      ~ ~ ( ~ ( member @ SX2 @ SX0 )
                          | ~ ( member @ SX2 @ SX1 ) )
                | ( disjoint @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[77]) ).

thf(90,plain,
    ( ( ! [SX0: $i] :
          ( ~ ( ( SX0 != null_class ) )
          | ~ ! [SX1: $i] :
                ~ ~ ( ~ ~ ( ~ ( member @ SX1 @ universal_class )
                          | ~ ( member @ SX1 @ SX0 ) )
                    | ~ ( disjoint @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[78]) ).

thf(91,plain,
    ! [SV1: $i] :
      ( ( subclass @ SV1 @ universal_class )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[66]) ).

thf(92,plain,
    ! [SV2: $i] :
      ( ( ! [SY30: $i] : ( member @ ( unordered_pair @ SV2 @ SY30 ) @ universal_class ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[68]) ).

thf(93,plain,
    ! [SV3: $i] :
      ( ( ( singleton @ SV3 )
        = ( unordered_pair @ SV3 @ SV3 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[69]) ).

thf(94,plain,
    ! [SV4: $i] :
      ( ( ~ ( member @ SV4 @ null_class ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[72]) ).

thf(95,plain,
    ( ( member @ sK1_X @ universal_class )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[79]) ).

thf(96,plain,
    ( ( ( singleton @ sK1_X )
      = null_class )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[80]) ).

thf(97,plain,
    ! [SV5: $i] :
      ( ( ! [SY31: $i,SY32: $i] :
            ~ ( ~ ( ~ ( member @ SY32 @ ( union @ SV5 @ SY31 ) )
                  | ( member @ SY32 @ SV5 )
                  | ( member @ SY32 @ SY31 ) )
              | ~ ( ~ ( ( member @ SY32 @ SV5 )
                      | ( member @ SY32 @ SY31 ) )
                  | ( member @ SY32 @ ( union @ SV5 @ SY31 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[81]) ).

thf(98,plain,
    ! [SV6: $i] :
      ( ( ! [SY33: $i] :
            ~ ( ~ ( ~ ( subclass @ SV6 @ SY33 )
                  | ! [SY34: $i] :
                      ( ~ ( member @ SY34 @ SV6 )
                      | ( member @ SY34 @ SY33 ) ) )
              | ~ ( ~ ! [SY35: $i] :
                        ( ~ ( member @ SY35 @ SV6 )
                        | ( member @ SY35 @ SY33 ) )
                  | ( subclass @ SV6 @ SY33 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[82]) ).

thf(99,plain,
    ! [SV7: $i] :
      ( ( ! [SY36: $i] :
            ~ ( ~ ( ~ ( member @ SY36 @ ( complement @ SV7 ) )
                  | ~ ( ~ ( member @ SY36 @ universal_class )
                      | ~ ~ ( member @ SY36 @ SV7 ) ) )
              | ~ ( ~ ~ ( ~ ( member @ SY36 @ universal_class )
                        | ~ ~ ( member @ SY36 @ SV7 ) )
                  | ( member @ SY36 @ ( complement @ SV7 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[83]) ).

thf(100,plain,
    ! [SV8: $i] :
      ( ( ~ ( member @ SV8 @ universal_class )
        | ( member @ ( sum_class @ SV8 ) @ universal_class ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[84]) ).

thf(101,plain,
    ! [SV9: $i] :
      ( ( ! [SY37: $i] :
            ~ ( ~ ( ~ ( member @ SV9 @ ( sum_class @ SY37 ) )
                  | ~ ! [SY38: $i] :
                        ~ ~ ( ~ ( member @ SV9 @ SY38 )
                            | ~ ( member @ SY38 @ SY37 ) ) )
              | ~ ( ~ ~ ! [SY39: $i] :
                          ~ ~ ( ~ ( member @ SV9 @ SY39 )
                              | ~ ( member @ SY39 @ SY37 ) )
                  | ( member @ SV9 @ ( sum_class @ SY37 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[85]) ).

thf(102,plain,
    ! [SV10: $i] :
      ( ( ! [SY40: $i,SY41: $i] :
            ~ ( ~ ( ~ ( member @ SV10 @ ( unordered_pair @ SY40 @ SY41 ) )
                  | ~ ( ~ ( member @ SV10 @ universal_class )
                      | ~ ( ( SV10 = SY40 )
                          | ( SV10 = SY41 ) ) ) )
              | ~ ( ~ ~ ( ~ ( member @ SV10 @ universal_class )
                        | ~ ( ( SV10 = SY40 )
                            | ( SV10 = SY41 ) ) )
                  | ( member @ SV10 @ ( unordered_pair @ SY40 @ SY41 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[86]) ).

thf(103,plain,
    ! [SV11: $i] :
      ( ( ~ ( member @ SV11 @ universal_class )
        | ( member @ ( power_class @ SV11 ) @ universal_class ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[87]) ).

thf(104,plain,
    ! [SV12: $i] :
      ( ( ! [SY42: $i,SY43: $i] :
            ~ ( ~ ( ~ ( member @ SY43 @ ( intersection @ SV12 @ SY42 ) )
                  | ~ ( ~ ( member @ SY43 @ SV12 )
                      | ~ ( member @ SY43 @ SY42 ) ) )
              | ~ ( ~ ~ ( ~ ( member @ SY43 @ SV12 )
                        | ~ ( member @ SY43 @ SY42 ) )
                  | ( member @ SY43 @ ( intersection @ SV12 @ SY42 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[88]) ).

thf(105,plain,
    ! [SV13: $i] :
      ( ( ! [SY44: $i] :
            ~ ( ~ ( ~ ( disjoint @ SV13 @ SY44 )
                  | ! [SY45: $i] :
                      ~ ~ ( ~ ( member @ SY45 @ SV13 )
                          | ~ ( member @ SY45 @ SY44 ) ) )
              | ~ ( ~ ! [SY46: $i] :
                        ~ ~ ( ~ ( member @ SY46 @ SV13 )
                            | ~ ( member @ SY46 @ SY44 ) )
                  | ( disjoint @ SV13 @ SY44 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[89]) ).

thf(106,plain,
    ! [SV14: $i] :
      ( ( ~ ( ( SV14 != null_class ) )
        | ~ ! [SY47: $i] :
              ~ ~ ( ~ ~ ( ~ ( member @ SY47 @ universal_class )
                        | ~ ( member @ SY47 @ SV14 ) )
                  | ~ ( disjoint @ SY47 @ SV14 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[90]) ).

thf(107,plain,
    ! [SV15: $i,SV2: $i] :
      ( ( member @ ( unordered_pair @ SV2 @ SV15 ) @ universal_class )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[92]) ).

thf(108,plain,
    ! [SV4: $i] :
      ( ( member @ SV4 @ null_class )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[94]) ).

thf(109,plain,
    ! [SV16: $i,SV5: $i] :
      ( ( ! [SY48: $i] :
            ~ ( ~ ( ~ ( member @ SY48 @ ( union @ SV5 @ SV16 ) )
                  | ( member @ SY48 @ SV5 )
                  | ( member @ SY48 @ SV16 ) )
              | ~ ( ~ ( ( member @ SY48 @ SV5 )
                      | ( member @ SY48 @ SV16 ) )
                  | ( member @ SY48 @ ( union @ SV5 @ SV16 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[97]) ).

thf(110,plain,
    ! [SV17: $i,SV6: $i] :
      ( ( ~ ( ~ ( ~ ( subclass @ SV6 @ SV17 )
                | ! [SY49: $i] :
                    ( ~ ( member @ SY49 @ SV6 )
                    | ( member @ SY49 @ SV17 ) ) )
            | ~ ( ~ ! [SY50: $i] :
                      ( ~ ( member @ SY50 @ SV6 )
                      | ( member @ SY50 @ SV17 ) )
                | ( subclass @ SV6 @ SV17 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[98]) ).

thf(111,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ~ ( ~ ( ~ ( member @ SV18 @ ( complement @ SV7 ) )
                | ~ ( ~ ( member @ SV18 @ universal_class )
                    | ~ ~ ( member @ SV18 @ SV7 ) ) )
            | ~ ( ~ ~ ( ~ ( member @ SV18 @ universal_class )
                      | ~ ~ ( member @ SV18 @ SV7 ) )
                | ( member @ SV18 @ ( complement @ SV7 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[99]) ).

thf(112,plain,
    ! [SV8: $i] :
      ( ( ( ~ ( member @ SV8 @ universal_class ) )
        = $true )
      | ( ( member @ ( sum_class @ SV8 ) @ universal_class )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[100]) ).

thf(113,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ~ ( ~ ( ~ ( member @ SV9 @ ( sum_class @ SV19 ) )
                | ~ ! [SY51: $i] :
                      ~ ~ ( ~ ( member @ SV9 @ SY51 )
                          | ~ ( member @ SY51 @ SV19 ) ) )
            | ~ ( ~ ~ ! [SY52: $i] :
                        ~ ~ ( ~ ( member @ SV9 @ SY52 )
                            | ~ ( member @ SY52 @ SV19 ) )
                | ( member @ SV9 @ ( sum_class @ SV19 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[101]) ).

thf(114,plain,
    ! [SV20: $i,SV10: $i] :
      ( ( ! [SY53: $i] :
            ~ ( ~ ( ~ ( member @ SV10 @ ( unordered_pair @ SV20 @ SY53 ) )
                  | ~ ( ~ ( member @ SV10 @ universal_class )
                      | ~ ( ( SV10 = SV20 )
                          | ( SV10 = SY53 ) ) ) )
              | ~ ( ~ ~ ( ~ ( member @ SV10 @ universal_class )
                        | ~ ( ( SV10 = SV20 )
                            | ( SV10 = SY53 ) ) )
                  | ( member @ SV10 @ ( unordered_pair @ SV20 @ SY53 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[102]) ).

thf(115,plain,
    ! [SV11: $i] :
      ( ( ( ~ ( member @ SV11 @ universal_class ) )
        = $true )
      | ( ( member @ ( power_class @ SV11 ) @ universal_class )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[103]) ).

thf(116,plain,
    ! [SV21: $i,SV12: $i] :
      ( ( ! [SY54: $i] :
            ~ ( ~ ( ~ ( member @ SY54 @ ( intersection @ SV12 @ SV21 ) )
                  | ~ ( ~ ( member @ SY54 @ SV12 )
                      | ~ ( member @ SY54 @ SV21 ) ) )
              | ~ ( ~ ~ ( ~ ( member @ SY54 @ SV12 )
                        | ~ ( member @ SY54 @ SV21 ) )
                  | ( member @ SY54 @ ( intersection @ SV12 @ SV21 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[104]) ).

thf(117,plain,
    ! [SV22: $i,SV13: $i] :
      ( ( ~ ( ~ ( ~ ( disjoint @ SV13 @ SV22 )
                | ! [SY55: $i] :
                    ~ ~ ( ~ ( member @ SY55 @ SV13 )
                        | ~ ( member @ SY55 @ SV22 ) ) )
            | ~ ( ~ ! [SY56: $i] :
                      ~ ~ ( ~ ( member @ SY56 @ SV13 )
                          | ~ ( member @ SY56 @ SV22 ) )
                | ( disjoint @ SV13 @ SV22 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[105]) ).

thf(118,plain,
    ! [SV14: $i] :
      ( ( ( ~ ( ( SV14 != null_class ) ) )
        = $true )
      | ( ( ~ ! [SY47: $i] :
                ~ ~ ( ~ ~ ( ~ ( member @ SY47 @ universal_class )
                          | ~ ( member @ SY47 @ SV14 ) )
                    | ~ ( disjoint @ SY47 @ SV14 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[106]) ).

thf(119,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ~ ( ~ ( ~ ( member @ SV23 @ ( union @ SV5 @ SV16 ) )
                | ( member @ SV23 @ SV5 )
                | ( member @ SV23 @ SV16 ) )
            | ~ ( ~ ( ( member @ SV23 @ SV5 )
                    | ( member @ SV23 @ SV16 ) )
                | ( member @ SV23 @ ( union @ SV5 @ SV16 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[109]) ).

thf(120,plain,
    ! [SV17: $i,SV6: $i] :
      ( ( ~ ( ~ ( subclass @ SV6 @ SV17 )
            | ! [SY49: $i] :
                ( ~ ( member @ SY49 @ SV6 )
                | ( member @ SY49 @ SV17 ) ) )
        | ~ ( ~ ! [SY50: $i] :
                  ( ~ ( member @ SY50 @ SV6 )
                  | ( member @ SY50 @ SV17 ) )
            | ( subclass @ SV6 @ SV17 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[110]) ).

thf(121,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ~ ( ~ ( member @ SV18 @ ( complement @ SV7 ) )
            | ~ ( ~ ( member @ SV18 @ universal_class )
                | ~ ~ ( member @ SV18 @ SV7 ) ) )
        | ~ ( ~ ~ ( ~ ( member @ SV18 @ universal_class )
                  | ~ ~ ( member @ SV18 @ SV7 ) )
            | ( member @ SV18 @ ( complement @ SV7 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[111]) ).

thf(122,plain,
    ! [SV8: $i] :
      ( ( ( member @ SV8 @ universal_class )
        = $false )
      | ( ( member @ ( sum_class @ SV8 ) @ universal_class )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[112]) ).

thf(123,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ~ ( ~ ( member @ SV9 @ ( sum_class @ SV19 ) )
            | ~ ! [SY51: $i] :
                  ~ ~ ( ~ ( member @ SV9 @ SY51 )
                      | ~ ( member @ SY51 @ SV19 ) ) )
        | ~ ( ~ ~ ! [SY52: $i] :
                    ~ ~ ( ~ ( member @ SV9 @ SY52 )
                        | ~ ( member @ SY52 @ SV19 ) )
            | ( member @ SV9 @ ( sum_class @ SV19 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[113]) ).

thf(124,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ~ ( ~ ( ~ ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
                | ~ ( ~ ( member @ SV10 @ universal_class )
                    | ~ ( ( SV10 = SV20 )
                        | ( SV10 = SV24 ) ) ) )
            | ~ ( ~ ~ ( ~ ( member @ SV10 @ universal_class )
                      | ~ ( ( SV10 = SV20 )
                          | ( SV10 = SV24 ) ) )
                | ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[114]) ).

thf(125,plain,
    ! [SV11: $i] :
      ( ( ( member @ SV11 @ universal_class )
        = $false )
      | ( ( member @ ( power_class @ SV11 ) @ universal_class )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[115]) ).

thf(126,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ~ ( ~ ( ~ ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
                | ~ ( ~ ( member @ SV25 @ SV12 )
                    | ~ ( member @ SV25 @ SV21 ) ) )
            | ~ ( ~ ~ ( ~ ( member @ SV25 @ SV12 )
                      | ~ ( member @ SV25 @ SV21 ) )
                | ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[116]) ).

thf(127,plain,
    ! [SV22: $i,SV13: $i] :
      ( ( ~ ( ~ ( disjoint @ SV13 @ SV22 )
            | ! [SY55: $i] :
                ~ ~ ( ~ ( member @ SY55 @ SV13 )
                    | ~ ( member @ SY55 @ SV22 ) ) )
        | ~ ( ~ ! [SY56: $i] :
                  ~ ~ ( ~ ( member @ SY56 @ SV13 )
                      | ~ ( member @ SY56 @ SV22 ) )
            | ( disjoint @ SV13 @ SV22 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[117]) ).

thf(128,plain,
    ! [SV14: $i] :
      ( ( ( SV14 != null_class )
        = $false )
      | ( ( ~ ! [SY47: $i] :
                ~ ~ ( ~ ~ ( ~ ( member @ SY47 @ universal_class )
                          | ~ ( member @ SY47 @ SV14 ) )
                    | ~ ( disjoint @ SY47 @ SV14 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[118]) ).

thf(129,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ~ ( ~ ( member @ SV23 @ ( union @ SV5 @ SV16 ) )
            | ( member @ SV23 @ SV5 )
            | ( member @ SV23 @ SV16 ) )
        | ~ ( ~ ( ( member @ SV23 @ SV5 )
                | ( member @ SV23 @ SV16 ) )
            | ( member @ SV23 @ ( union @ SV5 @ SV16 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[119]) ).

thf(130,plain,
    ! [SV17: $i,SV6: $i] :
      ( ( ~ ( ~ ( subclass @ SV6 @ SV17 )
            | ! [SY49: $i] :
                ( ~ ( member @ SY49 @ SV6 )
                | ( member @ SY49 @ SV17 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[120]) ).

thf(131,plain,
    ! [SV17: $i,SV6: $i] :
      ( ( ~ ( ~ ! [SY50: $i] :
                  ( ~ ( member @ SY50 @ SV6 )
                  | ( member @ SY50 @ SV17 ) )
            | ( subclass @ SV6 @ SV17 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[120]) ).

thf(132,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ~ ( ~ ( member @ SV18 @ ( complement @ SV7 ) )
            | ~ ( ~ ( member @ SV18 @ universal_class )
                | ~ ~ ( member @ SV18 @ SV7 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[121]) ).

thf(133,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ~ ( ~ ~ ( ~ ( member @ SV18 @ universal_class )
                  | ~ ~ ( member @ SV18 @ SV7 ) )
            | ( member @ SV18 @ ( complement @ SV7 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[121]) ).

thf(134,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ~ ( ~ ( member @ SV9 @ ( sum_class @ SV19 ) )
            | ~ ! [SY51: $i] :
                  ~ ~ ( ~ ( member @ SV9 @ SY51 )
                      | ~ ( member @ SY51 @ SV19 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[123]) ).

thf(135,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ~ ( ~ ~ ! [SY52: $i] :
                    ~ ~ ( ~ ( member @ SV9 @ SY52 )
                        | ~ ( member @ SY52 @ SV19 ) )
            | ( member @ SV9 @ ( sum_class @ SV19 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[123]) ).

thf(136,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ~ ( ~ ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
            | ~ ( ~ ( member @ SV10 @ universal_class )
                | ~ ( ( SV10 = SV20 )
                    | ( SV10 = SV24 ) ) ) )
        | ~ ( ~ ~ ( ~ ( member @ SV10 @ universal_class )
                  | ~ ( ( SV10 = SV20 )
                      | ( SV10 = SV24 ) ) )
            | ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[124]) ).

thf(137,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ~ ( ~ ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
            | ~ ( ~ ( member @ SV25 @ SV12 )
                | ~ ( member @ SV25 @ SV21 ) ) )
        | ~ ( ~ ~ ( ~ ( member @ SV25 @ SV12 )
                  | ~ ( member @ SV25 @ SV21 ) )
            | ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[126]) ).

thf(138,plain,
    ! [SV22: $i,SV13: $i] :
      ( ( ~ ( ~ ( disjoint @ SV13 @ SV22 )
            | ! [SY55: $i] :
                ~ ~ ( ~ ( member @ SY55 @ SV13 )
                    | ~ ( member @ SY55 @ SV22 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[127]) ).

thf(139,plain,
    ! [SV22: $i,SV13: $i] :
      ( ( ~ ( ~ ! [SY56: $i] :
                  ~ ~ ( ~ ( member @ SY56 @ SV13 )
                      | ~ ( member @ SY56 @ SV22 ) )
            | ( disjoint @ SV13 @ SV22 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[127]) ).

thf(140,plain,
    ! [SV14: $i] :
      ( ( ( SV14 = null_class )
        = $true )
      | ( ( ~ ! [SY47: $i] :
                ~ ~ ( ~ ~ ( ~ ( member @ SY47 @ universal_class )
                          | ~ ( member @ SY47 @ SV14 ) )
                    | ~ ( disjoint @ SY47 @ SV14 ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[128]) ).

thf(141,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ~ ( ~ ( member @ SV23 @ ( union @ SV5 @ SV16 ) )
            | ( member @ SV23 @ SV5 )
            | ( member @ SV23 @ SV16 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[129]) ).

thf(142,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ~ ( ~ ( ( member @ SV23 @ SV5 )
                | ( member @ SV23 @ SV16 ) )
            | ( member @ SV23 @ ( union @ SV5 @ SV16 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[129]) ).

thf(143,plain,
    ! [SV17: $i,SV6: $i] :
      ( ( ~ ( subclass @ SV6 @ SV17 )
        | ! [SY49: $i] :
            ( ~ ( member @ SY49 @ SV6 )
            | ( member @ SY49 @ SV17 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[130]) ).

thf(144,plain,
    ! [SV17: $i,SV6: $i] :
      ( ( ~ ! [SY50: $i] :
              ( ~ ( member @ SY50 @ SV6 )
              | ( member @ SY50 @ SV17 ) )
        | ( subclass @ SV6 @ SV17 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[131]) ).

thf(145,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ~ ( member @ SV18 @ ( complement @ SV7 ) )
        | ~ ( ~ ( member @ SV18 @ universal_class )
            | ~ ~ ( member @ SV18 @ SV7 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[132]) ).

thf(146,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ~ ~ ( ~ ( member @ SV18 @ universal_class )
              | ~ ~ ( member @ SV18 @ SV7 ) )
        | ( member @ SV18 @ ( complement @ SV7 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[133]) ).

thf(147,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ~ ( member @ SV9 @ ( sum_class @ SV19 ) )
        | ~ ! [SY51: $i] :
              ~ ~ ( ~ ( member @ SV9 @ SY51 )
                  | ~ ( member @ SY51 @ SV19 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[134]) ).

thf(148,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ~ ~ ! [SY52: $i] :
                ~ ~ ( ~ ( member @ SV9 @ SY52 )
                    | ~ ( member @ SY52 @ SV19 ) )
        | ( member @ SV9 @ ( sum_class @ SV19 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[135]) ).

thf(149,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ~ ( ~ ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
            | ~ ( ~ ( member @ SV10 @ universal_class )
                | ~ ( ( SV10 = SV20 )
                    | ( SV10 = SV24 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[136]) ).

thf(150,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ~ ( ~ ~ ( ~ ( member @ SV10 @ universal_class )
                  | ~ ( ( SV10 = SV20 )
                      | ( SV10 = SV24 ) ) )
            | ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[136]) ).

thf(151,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ~ ( ~ ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
            | ~ ( ~ ( member @ SV25 @ SV12 )
                | ~ ( member @ SV25 @ SV21 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[137]) ).

thf(152,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ~ ( ~ ~ ( ~ ( member @ SV25 @ SV12 )
                  | ~ ( member @ SV25 @ SV21 ) )
            | ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[137]) ).

thf(153,plain,
    ! [SV22: $i,SV13: $i] :
      ( ( ~ ( disjoint @ SV13 @ SV22 )
        | ! [SY55: $i] :
            ~ ~ ( ~ ( member @ SY55 @ SV13 )
                | ~ ( member @ SY55 @ SV22 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[138]) ).

thf(154,plain,
    ! [SV22: $i,SV13: $i] :
      ( ( ~ ! [SY56: $i] :
              ~ ~ ( ~ ( member @ SY56 @ SV13 )
                  | ~ ( member @ SY56 @ SV22 ) )
        | ( disjoint @ SV13 @ SV22 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[139]) ).

thf(155,plain,
    ! [SV14: $i] :
      ( ( ( ! [SY47: $i] :
              ~ ~ ( ~ ~ ( ~ ( member @ SY47 @ universal_class )
                        | ~ ( member @ SY47 @ SV14 ) )
                  | ~ ( disjoint @ SY47 @ SV14 ) ) )
        = $false )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[140]) ).

thf(156,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ~ ( member @ SV23 @ ( union @ SV5 @ SV16 ) )
        | ( member @ SV23 @ SV5 )
        | ( member @ SV23 @ SV16 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[141]) ).

thf(157,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ~ ( ( member @ SV23 @ SV5 )
            | ( member @ SV23 @ SV16 ) )
        | ( member @ SV23 @ ( union @ SV5 @ SV16 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[142]) ).

thf(158,plain,
    ! [SV17: $i,SV6: $i] :
      ( ( ( ~ ( subclass @ SV6 @ SV17 ) )
        = $true )
      | ( ( ! [SY49: $i] :
              ( ~ ( member @ SY49 @ SV6 )
              | ( member @ SY49 @ SV17 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[143]) ).

thf(159,plain,
    ! [SV17: $i,SV6: $i] :
      ( ( ( ~ ! [SY50: $i] :
                ( ~ ( member @ SY50 @ SV6 )
                | ( member @ SY50 @ SV17 ) ) )
        = $true )
      | ( ( subclass @ SV6 @ SV17 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[144]) ).

thf(160,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( ~ ( member @ SV18 @ ( complement @ SV7 ) ) )
        = $true )
      | ( ( ~ ( ~ ( member @ SV18 @ universal_class )
              | ~ ~ ( member @ SV18 @ SV7 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[145]) ).

thf(161,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( ~ ~ ( ~ ( member @ SV18 @ universal_class )
                | ~ ~ ( member @ SV18 @ SV7 ) ) )
        = $true )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[146]) ).

thf(162,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( ~ ( member @ SV9 @ ( sum_class @ SV19 ) ) )
        = $true )
      | ( ( ~ ! [SY51: $i] :
                ~ ~ ( ~ ( member @ SV9 @ SY51 )
                    | ~ ( member @ SY51 @ SV19 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[147]) ).

thf(163,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( ~ ~ ! [SY52: $i] :
                  ~ ~ ( ~ ( member @ SV9 @ SY52 )
                      | ~ ( member @ SY52 @ SV19 ) ) )
        = $true )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[148]) ).

thf(164,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ~ ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        | ~ ( ~ ( member @ SV10 @ universal_class )
            | ~ ( ( SV10 = SV20 )
                | ( SV10 = SV24 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[149]) ).

thf(165,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ~ ~ ( ~ ( member @ SV10 @ universal_class )
              | ~ ( ( SV10 = SV20 )
                  | ( SV10 = SV24 ) ) )
        | ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[150]) ).

thf(166,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ~ ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        | ~ ( ~ ( member @ SV25 @ SV12 )
            | ~ ( member @ SV25 @ SV21 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[151]) ).

thf(167,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ~ ~ ( ~ ( member @ SV25 @ SV12 )
              | ~ ( member @ SV25 @ SV21 ) )
        | ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[152]) ).

thf(168,plain,
    ! [SV22: $i,SV13: $i] :
      ( ( ( ~ ( disjoint @ SV13 @ SV22 ) )
        = $true )
      | ( ( ! [SY55: $i] :
              ~ ~ ( ~ ( member @ SY55 @ SV13 )
                  | ~ ( member @ SY55 @ SV22 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[153]) ).

thf(169,plain,
    ! [SV22: $i,SV13: $i] :
      ( ( ( ~ ! [SY56: $i] :
                ~ ~ ( ~ ( member @ SY56 @ SV13 )
                    | ~ ( member @ SY56 @ SV22 ) ) )
        = $true )
      | ( ( disjoint @ SV13 @ SV22 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[154]) ).

thf(170,plain,
    ! [SV14: $i] :
      ( ( ( ~ ~ ( ~ ~ ( ~ ( member @ ( sK2_SY47 @ SV14 ) @ universal_class )
                      | ~ ( member @ ( sK2_SY47 @ SV14 ) @ SV14 ) )
                | ~ ( disjoint @ ( sK2_SY47 @ SV14 ) @ SV14 ) ) )
        = $false )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[155]) ).

thf(171,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ( ~ ( member @ SV23 @ ( union @ SV5 @ SV16 ) ) )
        = $true )
      | ( ( ( member @ SV23 @ SV5 )
          | ( member @ SV23 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[156]) ).

thf(172,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ( ~ ( ( member @ SV23 @ SV5 )
              | ( member @ SV23 @ SV16 ) ) )
        = $true )
      | ( ( member @ SV23 @ ( union @ SV5 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[157]) ).

thf(173,plain,
    ! [SV17: $i,SV6: $i] :
      ( ( ( subclass @ SV6 @ SV17 )
        = $false )
      | ( ( ! [SY49: $i] :
              ( ~ ( member @ SY49 @ SV6 )
              | ( member @ SY49 @ SV17 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[158]) ).

thf(174,plain,
    ! [SV17: $i,SV6: $i] :
      ( ( ( ! [SY50: $i] :
              ( ~ ( member @ SY50 @ SV6 )
              | ( member @ SY50 @ SV17 ) ) )
        = $false )
      | ( ( subclass @ SV6 @ SV17 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[159]) ).

thf(175,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $false )
      | ( ( ~ ( ~ ( member @ SV18 @ universal_class )
              | ~ ~ ( member @ SV18 @ SV7 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[160]) ).

thf(176,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( ~ ( ~ ( member @ SV18 @ universal_class )
              | ~ ~ ( member @ SV18 @ SV7 ) ) )
        = $false )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[161]) ).

thf(177,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $false )
      | ( ( ~ ! [SY51: $i] :
                ~ ~ ( ~ ( member @ SV9 @ SY51 )
                    | ~ ( member @ SY51 @ SV19 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[162]) ).

thf(178,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( ~ ! [SY52: $i] :
                ~ ~ ( ~ ( member @ SV9 @ SY52 )
                    | ~ ( member @ SY52 @ SV19 ) ) )
        = $false )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[163]) ).

thf(179,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( ~ ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) ) )
        = $true )
      | ( ( ~ ( ~ ( member @ SV10 @ universal_class )
              | ~ ( ( SV10 = SV20 )
                  | ( SV10 = SV24 ) ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[164]) ).

thf(180,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( ~ ~ ( ~ ( member @ SV10 @ universal_class )
                | ~ ( ( SV10 = SV20 )
                    | ( SV10 = SV24 ) ) ) )
        = $true )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[165]) ).

thf(181,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ( ~ ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) ) )
        = $true )
      | ( ( ~ ( ~ ( member @ SV25 @ SV12 )
              | ~ ( member @ SV25 @ SV21 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[166]) ).

thf(182,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ( ~ ~ ( ~ ( member @ SV25 @ SV12 )
                | ~ ( member @ SV25 @ SV21 ) ) )
        = $true )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[167]) ).

thf(183,plain,
    ! [SV22: $i,SV13: $i] :
      ( ( ( disjoint @ SV13 @ SV22 )
        = $false )
      | ( ( ! [SY55: $i] :
              ~ ~ ( ~ ( member @ SY55 @ SV13 )
                  | ~ ( member @ SY55 @ SV22 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[168]) ).

thf(184,plain,
    ! [SV22: $i,SV13: $i] :
      ( ( ( ! [SY56: $i] :
              ~ ~ ( ~ ( member @ SY56 @ SV13 )
                  | ~ ( member @ SY56 @ SV22 ) ) )
        = $false )
      | ( ( disjoint @ SV13 @ SV22 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[169]) ).

thf(185,plain,
    ! [SV14: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( member @ ( sK2_SY47 @ SV14 ) @ universal_class )
                    | ~ ( member @ ( sK2_SY47 @ SV14 ) @ SV14 ) )
              | ~ ( disjoint @ ( sK2_SY47 @ SV14 ) @ SV14 ) ) )
        = $true )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[170]) ).

thf(186,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ( member @ SV23 @ ( union @ SV5 @ SV16 ) )
        = $false )
      | ( ( ( member @ SV23 @ SV5 )
          | ( member @ SV23 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[171]) ).

thf(187,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ( ( member @ SV23 @ SV5 )
          | ( member @ SV23 @ SV16 ) )
        = $false )
      | ( ( member @ SV23 @ ( union @ SV5 @ SV16 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[172]) ).

thf(188,plain,
    ! [SV17: $i,SV6: $i,SV26: $i] :
      ( ( ( ~ ( member @ SV26 @ SV6 )
          | ( member @ SV26 @ SV17 ) )
        = $true )
      | ( ( subclass @ SV6 @ SV17 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[173]) ).

thf(189,plain,
    ! [SV6: $i,SV17: $i] :
      ( ( ( ~ ( member @ ( sK3_SY50 @ SV17 @ SV6 ) @ SV6 )
          | ( member @ ( sK3_SY50 @ SV17 @ SV6 ) @ SV17 ) )
        = $false )
      | ( ( subclass @ SV6 @ SV17 )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[174]) ).

thf(190,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( ~ ( member @ SV18 @ universal_class )
          | ~ ~ ( member @ SV18 @ SV7 ) )
        = $false )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[175]) ).

thf(191,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( ~ ( member @ SV18 @ universal_class )
          | ~ ~ ( member @ SV18 @ SV7 ) )
        = $true )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[176]) ).

thf(192,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( ! [SY51: $i] :
              ~ ~ ( ~ ( member @ SV9 @ SY51 )
                  | ~ ( member @ SY51 @ SV19 ) ) )
        = $false )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[177]) ).

thf(193,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( ! [SY52: $i] :
              ~ ~ ( ~ ( member @ SV9 @ SY52 )
                  | ~ ( member @ SY52 @ SV19 ) ) )
        = $true )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[178]) ).

thf(194,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $false )
      | ( ( ~ ( ~ ( member @ SV10 @ universal_class )
              | ~ ( ( SV10 = SV20 )
                  | ( SV10 = SV24 ) ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[179]) ).

thf(195,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( ~ ( ~ ( member @ SV10 @ universal_class )
              | ~ ( ( SV10 = SV20 )
                  | ( SV10 = SV24 ) ) ) )
        = $false )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[180]) ).

thf(196,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $false )
      | ( ( ~ ( ~ ( member @ SV25 @ SV12 )
              | ~ ( member @ SV25 @ SV21 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[181]) ).

thf(197,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ( ~ ( ~ ( member @ SV25 @ SV12 )
              | ~ ( member @ SV25 @ SV21 ) ) )
        = $false )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[182]) ).

thf(198,plain,
    ! [SV22: $i,SV13: $i,SV27: $i] :
      ( ( ( ~ ~ ( ~ ( member @ SV27 @ SV13 )
                | ~ ( member @ SV27 @ SV22 ) ) )
        = $true )
      | ( ( disjoint @ SV13 @ SV22 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[183]) ).

thf(199,plain,
    ! [SV13: $i,SV22: $i] :
      ( ( ( ~ ~ ( ~ ( member @ ( sK4_SY56 @ SV22 @ SV13 ) @ SV13 )
                | ~ ( member @ ( sK4_SY56 @ SV22 @ SV13 ) @ SV22 ) ) )
        = $false )
      | ( ( disjoint @ SV13 @ SV22 )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[184]) ).

thf(200,plain,
    ! [SV14: $i] :
      ( ( ( ~ ~ ( ~ ( member @ ( sK2_SY47 @ SV14 ) @ universal_class )
                | ~ ( member @ ( sK2_SY47 @ SV14 ) @ SV14 ) )
          | ~ ( disjoint @ ( sK2_SY47 @ SV14 ) @ SV14 ) )
        = $false )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[185]) ).

thf(201,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ( member @ SV23 @ SV5 )
        = $true )
      | ( ( member @ SV23 @ SV16 )
        = $true )
      | ( ( member @ SV23 @ ( union @ SV5 @ SV16 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[186]) ).

thf(202,plain,
    ! [SV16: $i,SV5: $i,SV23: $i] :
      ( ( ( member @ SV23 @ SV5 )
        = $false )
      | ( ( member @ SV23 @ ( union @ SV5 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[187]) ).

thf(203,plain,
    ! [SV5: $i,SV16: $i,SV23: $i] :
      ( ( ( member @ SV23 @ SV16 )
        = $false )
      | ( ( member @ SV23 @ ( union @ SV5 @ SV16 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[187]) ).

thf(204,plain,
    ! [SV17: $i,SV6: $i,SV26: $i] :
      ( ( ( ~ ( member @ SV26 @ SV6 ) )
        = $true )
      | ( ( member @ SV26 @ SV17 )
        = $true )
      | ( ( subclass @ SV6 @ SV17 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[188]) ).

thf(205,plain,
    ! [SV6: $i,SV17: $i] :
      ( ( ( ~ ( member @ ( sK3_SY50 @ SV17 @ SV6 ) @ SV6 ) )
        = $false )
      | ( ( subclass @ SV6 @ SV17 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[189]) ).

thf(206,plain,
    ! [SV6: $i,SV17: $i] :
      ( ( ( member @ ( sK3_SY50 @ SV17 @ SV6 ) @ SV17 )
        = $false )
      | ( ( subclass @ SV6 @ SV17 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[189]) ).

thf(207,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( ~ ( member @ SV18 @ universal_class ) )
        = $false )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[190]) ).

thf(208,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( ~ ~ ( member @ SV18 @ SV7 ) )
        = $false )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[190]) ).

thf(209,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( ~ ( member @ SV18 @ universal_class ) )
        = $true )
      | ( ( ~ ~ ( member @ SV18 @ SV7 ) )
        = $true )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[191]) ).

thf(210,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( ~ ~ ( ~ ( member @ SV9 @ ( sK5_SY51 @ SV19 @ SV9 ) )
                | ~ ( member @ ( sK5_SY51 @ SV19 @ SV9 ) @ SV19 ) ) )
        = $false )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $false ) ),
    inference(extcnf_forall_neg,[status(esa)],[192]) ).

thf(211,plain,
    ! [SV19: $i,SV28: $i,SV9: $i] :
      ( ( ( ~ ~ ( ~ ( member @ SV9 @ SV28 )
                | ~ ( member @ SV28 @ SV19 ) ) )
        = $true )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[193]) ).

thf(212,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( ~ ( member @ SV10 @ universal_class )
          | ~ ( ( SV10 = SV20 )
              | ( SV10 = SV24 ) ) )
        = $false )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[194]) ).

thf(213,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( ~ ( member @ SV10 @ universal_class )
          | ~ ( ( SV10 = SV20 )
              | ( SV10 = SV24 ) ) )
        = $true )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[195]) ).

thf(214,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ( ~ ( member @ SV25 @ SV12 )
          | ~ ( member @ SV25 @ SV21 ) )
        = $false )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[196]) ).

thf(215,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ( ~ ( member @ SV25 @ SV12 )
          | ~ ( member @ SV25 @ SV21 ) )
        = $true )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[197]) ).

thf(216,plain,
    ! [SV22: $i,SV13: $i,SV27: $i] :
      ( ( ( ~ ( ~ ( member @ SV27 @ SV13 )
              | ~ ( member @ SV27 @ SV22 ) ) )
        = $false )
      | ( ( disjoint @ SV13 @ SV22 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[198]) ).

thf(217,plain,
    ! [SV13: $i,SV22: $i] :
      ( ( ( ~ ( ~ ( member @ ( sK4_SY56 @ SV22 @ SV13 ) @ SV13 )
              | ~ ( member @ ( sK4_SY56 @ SV22 @ SV13 ) @ SV22 ) ) )
        = $true )
      | ( ( disjoint @ SV13 @ SV22 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[199]) ).

thf(218,plain,
    ! [SV14: $i] :
      ( ( ( ~ ~ ( ~ ( member @ ( sK2_SY47 @ SV14 ) @ universal_class )
                | ~ ( member @ ( sK2_SY47 @ SV14 ) @ SV14 ) ) )
        = $false )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[200]) ).

thf(219,plain,
    ! [SV14: $i] :
      ( ( ( ~ ( disjoint @ ( sK2_SY47 @ SV14 ) @ SV14 ) )
        = $false )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[200]) ).

thf(220,plain,
    ! [SV17: $i,SV6: $i,SV26: $i] :
      ( ( ( member @ SV26 @ SV6 )
        = $false )
      | ( ( member @ SV26 @ SV17 )
        = $true )
      | ( ( subclass @ SV6 @ SV17 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[204]) ).

thf(221,plain,
    ! [SV6: $i,SV17: $i] :
      ( ( ( member @ ( sK3_SY50 @ SV17 @ SV6 ) @ SV6 )
        = $true )
      | ( ( subclass @ SV6 @ SV17 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[205]) ).

thf(222,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( member @ SV18 @ universal_class )
        = $true )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[207]) ).

thf(223,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( ~ ( member @ SV18 @ SV7 ) )
        = $true )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[208]) ).

thf(224,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( member @ SV18 @ universal_class )
        = $false )
      | ( ( ~ ~ ( member @ SV18 @ SV7 ) )
        = $true )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[209]) ).

thf(225,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( ~ ( ~ ( member @ SV9 @ ( sK5_SY51 @ SV19 @ SV9 ) )
              | ~ ( member @ ( sK5_SY51 @ SV19 @ SV9 ) @ SV19 ) ) )
        = $true )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[210]) ).

thf(226,plain,
    ! [SV19: $i,SV28: $i,SV9: $i] :
      ( ( ( ~ ( ~ ( member @ SV9 @ SV28 )
              | ~ ( member @ SV28 @ SV19 ) ) )
        = $false )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[211]) ).

thf(227,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( ~ ( member @ SV10 @ universal_class ) )
        = $false )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[212]) ).

thf(228,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( ~ ( ( SV10 = SV20 )
              | ( SV10 = SV24 ) ) )
        = $false )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[212]) ).

thf(229,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( ~ ( member @ SV10 @ universal_class ) )
        = $true )
      | ( ( ~ ( ( SV10 = SV20 )
              | ( SV10 = SV24 ) ) )
        = $true )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[213]) ).

thf(230,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ( ~ ( member @ SV25 @ SV12 ) )
        = $false )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[214]) ).

thf(231,plain,
    ! [SV12: $i,SV21: $i,SV25: $i] :
      ( ( ( ~ ( member @ SV25 @ SV21 ) )
        = $false )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[214]) ).

thf(232,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ( ~ ( member @ SV25 @ SV12 ) )
        = $true )
      | ( ( ~ ( member @ SV25 @ SV21 ) )
        = $true )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[215]) ).

thf(233,plain,
    ! [SV22: $i,SV13: $i,SV27: $i] :
      ( ( ( ~ ( member @ SV27 @ SV13 )
          | ~ ( member @ SV27 @ SV22 ) )
        = $true )
      | ( ( disjoint @ SV13 @ SV22 )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[216]) ).

thf(234,plain,
    ! [SV13: $i,SV22: $i] :
      ( ( ( ~ ( member @ ( sK4_SY56 @ SV22 @ SV13 ) @ SV13 )
          | ~ ( member @ ( sK4_SY56 @ SV22 @ SV13 ) @ SV22 ) )
        = $false )
      | ( ( disjoint @ SV13 @ SV22 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[217]) ).

thf(235,plain,
    ! [SV14: $i] :
      ( ( ( ~ ( ~ ( member @ ( sK2_SY47 @ SV14 ) @ universal_class )
              | ~ ( member @ ( sK2_SY47 @ SV14 ) @ SV14 ) ) )
        = $true )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[218]) ).

thf(236,plain,
    ! [SV14: $i] :
      ( ( ( disjoint @ ( sK2_SY47 @ SV14 ) @ SV14 )
        = $true )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[219]) ).

thf(237,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( member @ SV18 @ SV7 )
        = $false )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[223]) ).

thf(238,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( ~ ( member @ SV18 @ SV7 ) )
        = $false )
      | ( ( member @ SV18 @ universal_class )
        = $false )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[224]) ).

thf(239,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( ~ ( member @ SV9 @ ( sK5_SY51 @ SV19 @ SV9 ) )
          | ~ ( member @ ( sK5_SY51 @ SV19 @ SV9 ) @ SV19 ) )
        = $false )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[225]) ).

thf(240,plain,
    ! [SV19: $i,SV28: $i,SV9: $i] :
      ( ( ( ~ ( member @ SV9 @ SV28 )
          | ~ ( member @ SV28 @ SV19 ) )
        = $true )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[226]) ).

thf(241,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( member @ SV10 @ universal_class )
        = $true )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[227]) ).

thf(242,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( ( SV10 = SV20 )
          | ( SV10 = SV24 ) )
        = $true )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[228]) ).

thf(243,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( member @ SV10 @ universal_class )
        = $false )
      | ( ( ~ ( ( SV10 = SV20 )
              | ( SV10 = SV24 ) ) )
        = $true )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[229]) ).

thf(244,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ( member @ SV25 @ SV12 )
        = $true )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[230]) ).

thf(245,plain,
    ! [SV12: $i,SV21: $i,SV25: $i] :
      ( ( ( member @ SV25 @ SV21 )
        = $true )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[231]) ).

thf(246,plain,
    ! [SV21: $i,SV12: $i,SV25: $i] :
      ( ( ( member @ SV25 @ SV12 )
        = $false )
      | ( ( ~ ( member @ SV25 @ SV21 ) )
        = $true )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[232]) ).

thf(247,plain,
    ! [SV22: $i,SV13: $i,SV27: $i] :
      ( ( ( ~ ( member @ SV27 @ SV13 ) )
        = $true )
      | ( ( ~ ( member @ SV27 @ SV22 ) )
        = $true )
      | ( ( disjoint @ SV13 @ SV22 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[233]) ).

thf(248,plain,
    ! [SV13: $i,SV22: $i] :
      ( ( ( ~ ( member @ ( sK4_SY56 @ SV22 @ SV13 ) @ SV13 ) )
        = $false )
      | ( ( disjoint @ SV13 @ SV22 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[234]) ).

thf(249,plain,
    ! [SV13: $i,SV22: $i] :
      ( ( ( ~ ( member @ ( sK4_SY56 @ SV22 @ SV13 ) @ SV22 ) )
        = $false )
      | ( ( disjoint @ SV13 @ SV22 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[234]) ).

thf(250,plain,
    ! [SV14: $i] :
      ( ( ( ~ ( member @ ( sK2_SY47 @ SV14 ) @ universal_class )
          | ~ ( member @ ( sK2_SY47 @ SV14 ) @ SV14 ) )
        = $false )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[235]) ).

thf(251,plain,
    ! [SV7: $i,SV18: $i] :
      ( ( ( member @ SV18 @ SV7 )
        = $true )
      | ( ( member @ SV18 @ universal_class )
        = $false )
      | ( ( member @ SV18 @ ( complement @ SV7 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[238]) ).

thf(252,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( ~ ( member @ SV9 @ ( sK5_SY51 @ SV19 @ SV9 ) ) )
        = $false )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[239]) ).

thf(253,plain,
    ! [SV9: $i,SV19: $i] :
      ( ( ( ~ ( member @ ( sK5_SY51 @ SV19 @ SV9 ) @ SV19 ) )
        = $false )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[239]) ).

thf(254,plain,
    ! [SV19: $i,SV28: $i,SV9: $i] :
      ( ( ( ~ ( member @ SV9 @ SV28 ) )
        = $true )
      | ( ( ~ ( member @ SV28 @ SV19 ) )
        = $true )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[240]) ).

thf(255,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( SV10 = SV20 )
        = $true )
      | ( ( SV10 = SV24 )
        = $true )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[242]) ).

thf(256,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( ( SV10 = SV20 )
          | ( SV10 = SV24 ) )
        = $false )
      | ( ( member @ SV10 @ universal_class )
        = $false )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[243]) ).

thf(257,plain,
    ! [SV12: $i,SV21: $i,SV25: $i] :
      ( ( ( member @ SV25 @ SV21 )
        = $false )
      | ( ( member @ SV25 @ SV12 )
        = $false )
      | ( ( member @ SV25 @ ( intersection @ SV12 @ SV21 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[246]) ).

thf(258,plain,
    ! [SV22: $i,SV13: $i,SV27: $i] :
      ( ( ( member @ SV27 @ SV13 )
        = $false )
      | ( ( ~ ( member @ SV27 @ SV22 ) )
        = $true )
      | ( ( disjoint @ SV13 @ SV22 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[247]) ).

thf(259,plain,
    ! [SV13: $i,SV22: $i] :
      ( ( ( member @ ( sK4_SY56 @ SV22 @ SV13 ) @ SV13 )
        = $true )
      | ( ( disjoint @ SV13 @ SV22 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[248]) ).

thf(260,plain,
    ! [SV13: $i,SV22: $i] :
      ( ( ( member @ ( sK4_SY56 @ SV22 @ SV13 ) @ SV22 )
        = $true )
      | ( ( disjoint @ SV13 @ SV22 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[249]) ).

thf(261,plain,
    ! [SV14: $i] :
      ( ( ( ~ ( member @ ( sK2_SY47 @ SV14 ) @ universal_class ) )
        = $false )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[250]) ).

thf(262,plain,
    ! [SV14: $i] :
      ( ( ( ~ ( member @ ( sK2_SY47 @ SV14 ) @ SV14 ) )
        = $false )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[250]) ).

thf(263,plain,
    ! [SV19: $i,SV9: $i] :
      ( ( ( member @ SV9 @ ( sK5_SY51 @ SV19 @ SV9 ) )
        = $true )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[252]) ).

thf(264,plain,
    ! [SV9: $i,SV19: $i] :
      ( ( ( member @ ( sK5_SY51 @ SV19 @ SV9 ) @ SV19 )
        = $true )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[253]) ).

thf(265,plain,
    ! [SV19: $i,SV28: $i,SV9: $i] :
      ( ( ( member @ SV9 @ SV28 )
        = $false )
      | ( ( ~ ( member @ SV28 @ SV19 ) )
        = $true )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[254]) ).

thf(266,plain,
    ! [SV24: $i,SV20: $i,SV10: $i] :
      ( ( ( SV10 = SV20 )
        = $false )
      | ( ( member @ SV10 @ universal_class )
        = $false )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[256]) ).

thf(267,plain,
    ! [SV20: $i,SV24: $i,SV10: $i] :
      ( ( ( SV10 = SV24 )
        = $false )
      | ( ( member @ SV10 @ universal_class )
        = $false )
      | ( ( member @ SV10 @ ( unordered_pair @ SV20 @ SV24 ) )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[256]) ).

thf(268,plain,
    ! [SV13: $i,SV22: $i,SV27: $i] :
      ( ( ( member @ SV27 @ SV22 )
        = $false )
      | ( ( member @ SV27 @ SV13 )
        = $false )
      | ( ( disjoint @ SV13 @ SV22 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[258]) ).

thf(269,plain,
    ! [SV14: $i] :
      ( ( ( member @ ( sK2_SY47 @ SV14 ) @ universal_class )
        = $true )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[261]) ).

thf(270,plain,
    ! [SV14: $i] :
      ( ( ( member @ ( sK2_SY47 @ SV14 ) @ SV14 )
        = $true )
      | ( ( SV14 = null_class )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[262]) ).

thf(271,plain,
    ! [SV9: $i,SV19: $i,SV28: $i] :
      ( ( ( member @ SV28 @ SV19 )
        = $false )
      | ( ( member @ SV9 @ SV28 )
        = $false )
      | ( ( member @ SV9 @ ( sum_class @ SV19 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[265]) ).

thf(272,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[91,271,270,269,268,267,266,264,263,260,259,257,255,251,245,244,241,237,236,222,221,220,206,203,202,201,125,122,108,107,96,95,93]) ).

thf(273,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[272]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : SET082+1 : TPTP v9.3.1. Bugfixed v5.4.0.
% 0.00/0.04  % Command  : leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.08/0.17  % Computer : n005.cluster.edu
% 0.08/0.17  % Model    : x86_64 x86_64
% 0.08/0.17  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.17  % Memory   : 8046.5625MB
% 0.08/0.17  % OS       : Linux 6.8.0-71-generic
% 0.08/0.17  % CPULimit : 300
% 0.08/0.17  % WCLimit  : 300
% 0.08/0.17  % DateTime : Tue Oct  6 14:29:44 UTC 2026
% 0.08/0.17  % CPUTime  : 
% 0.08/0.17  Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.08/0.25  
% 0.08/0.25   No.of.Axioms: 14
% 0.08/0.25  
% 0.08/0.25   Length.of.Defs: 0
% 0.08/0.25  
% 0.08/0.25   Contains.Choice.Funs: false
% 0.08/0.25  ......
% 0.08/0.25  
% 0.08/0.25  ********************************
% 0.08/0.25  *   All subproblems solved!    *
% 0.08/0.25  ********************************
% 0.08/0.25  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:1,axioms:15,ps:0,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:false,expand_extuni:false,foatp:e,atp_timeout:299,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:272,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.08/0.25  
% 0.08/0.25  %**** Beginning of derivation protocol ****
% 0.08/0.25  % SZS output start CNFRefutation
% See solution above
% 0.08/0.26  
% 0.08/0.26  %**** End of derivation protocol ****
% 0.08/0.26  %**** no. of clauses in derivation: 244 ****
% 0.08/0.26  %**** clause counter: 272 ****
% 0.08/0.26  
% 0.08/0.26  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:1,axioms:15,ps:0,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:false,expand_extuni:false,foatp:e,atp_timeout:299,atp_calls_frequency:5,ordering:none,proof_output:1,protocol_output:false,clause_count:272,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------