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

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%------------------------------------------------------------------------------
% File     : LEO-II---2.3.1
% Problem  : SET062+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 : n014.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 10:39:14 AM UTC 2026

% Result   : Theorem 0.07s 0.25s
% Output   : CNFRefutation 0.07s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   18
%            Number of leaves      :   13
% Syntax   : Number of formulae    :  148 (  88 unt;   0 typ;   0 def)
%            Number of atoms       :  787 ( 246 equ;   0 cnn)
%            Maximal formula atoms :    4 (   5 avg)
%            Number of connectives : 1396 ( 362   ~; 209   |;  18   &; 789   @)
%                                         (   9 <=>;   9  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    8 (   3 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   38 (  35 usr;   9 con; 0-3 aty)
%            Number of variables   :  240 (   0   ^; 234   !;   6   ?; 240   :)

% 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_SX0,type,
    sK2_SX0: $i ).

thf(tp_sK3_SY19,type,
    sK3_SY19: $i > $i ).

thf(tp_sK4_SY26,type,
    sK4_SY26: $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(9,axiom,
    ! [XR: $i,YR: $i] : ( subclass @ ( compose @ YR @ XR ) @ ( cross_product @ universal_class @ universal_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',compose_defn1) ).

thf(11,axiom,
    ! [U: $i,X: $i] :
      ( ( member @ U @ ( power_class @ X ) )
    <=> ( ( member @ U @ universal_class )
        & ( subclass @ U @ X ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',power_class_defn) ).

thf(14,axiom,
    ? [X: $i] :
      ( ( member @ X @ universal_class )
      & ( inductive @ X )
      & ! [Y: $i] :
          ( ( inductive @ Y )
         => ( subclass @ X @ Y ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',infinity) ).

thf(20,axiom,
    subclass @ successor_relation @ ( cross_product @ universal_class @ universal_class ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',successor_relation_defn1) ).

thf(23,axiom,
    ! [X: $i] : ( subclass @ ( flip @ X ) @ ( cross_product @ ( cross_product @ universal_class @ universal_class ) @ universal_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',flip) ).

thf(25,axiom,
    ! [X: $i] : ( subclass @ ( rotate @ X ) @ ( cross_product @ ( cross_product @ universal_class @ universal_class ) @ universal_class ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rotate) ).

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

thf(32,axiom,
    subclass @ element_relation @ ( cross_product @ universal_class @ universal_class ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',element_relation) ).

thf(41,axiom,
    ! [X: $i,Y: $i] :
      ( ( X = Y )
    <=> ( ( subclass @ X @ Y )
        & ( subclass @ Y @ X ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',extensionality) ).

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] : ( subclass @ null_class @ X ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',null_class_is_subclass) ).

thf(45,negated_conjecture,
    ( ( ! [X: $i] : ( subclass @ null_class @ X ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[44]) ).

thf(46,plain,
    ( ( ! [X: $i] : ( subclass @ null_class @ X ) )
    = $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,
    ( ( ! [XR: $i,YR: $i] : ( subclass @ ( compose @ YR @ XR ) @ ( cross_product @ universal_class @ universal_class ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[9]) ).

thf(49,plain,
    ( ( ! [U: $i,X: $i] :
          ( ( member @ U @ ( power_class @ X ) )
        <=> ( ( member @ U @ universal_class )
            & ( subclass @ U @ X ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[11]) ).

thf(50,plain,
    ( ( ? [X: $i] :
          ( ( member @ X @ universal_class )
          & ( inductive @ X )
          & ! [Y: $i] :
              ( ( inductive @ Y )
             => ( subclass @ X @ Y ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[14]) ).

thf(51,plain,
    ( ( subclass @ successor_relation @ ( cross_product @ universal_class @ universal_class ) )
    = $true ),
    inference(unfold_def,[status(thm)],[20]) ).

thf(52,plain,
    ( ( ! [X: $i] : ( subclass @ ( flip @ X ) @ ( cross_product @ ( cross_product @ universal_class @ universal_class ) @ universal_class ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[23]) ).

thf(53,plain,
    ( ( ! [X: $i] : ( subclass @ ( rotate @ X ) @ ( cross_product @ ( cross_product @ universal_class @ universal_class ) @ universal_class ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[25]) ).

thf(54,plain,
    ( ( ! [X: $i] :
          ~ ( member @ X @ null_class ) )
    = $true ),
    inference(unfold_def,[status(thm)],[28]) ).

thf(55,plain,
    ( ( subclass @ element_relation @ ( cross_product @ universal_class @ universal_class ) )
    = $true ),
    inference(unfold_def,[status(thm)],[32]) ).

thf(56,plain,
    ( ( ! [X: $i,Y: $i] :
          ( ( X = Y )
        <=> ( ( subclass @ X @ Y )
            & ( subclass @ Y @ X ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[41]) ).

thf(57,plain,
    ( ( ! [X: $i] : ( subclass @ X @ universal_class ) )
    = $true ),
    inference(unfold_def,[status(thm)],[42]) ).

thf(58,plain,
    ( ( ! [X: $i,Y: $i] :
          ( ( subclass @ X @ Y )
        <=> ! [U: $i] :
              ( ( member @ U @ X )
             => ( member @ U @ Y ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[43]) ).

thf(59,plain,
    ( ( subclass @ null_class @ sK1_X )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[46]) ).

thf(60,plain,
    ( ( ~ ( subclass @ null_class @ sK1_X ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[59]) ).

thf(61,plain,
    ( ( ! [X: $i,Y: $i] :
          ( ( subclass @ X @ Y )
        <=> ! [U: $i] :
              ( ( member @ U @ X )
             => ( member @ U @ Y ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[58]) ).

thf(62,plain,
    ( ( ! [X: $i] : ( subclass @ X @ universal_class ) )
    = $true ),
    inference(copy,[status(thm)],[57]) ).

thf(63,plain,
    ( ( ! [X: $i,Y: $i] :
          ( ( X = Y )
        <=> ( ( subclass @ X @ Y )
            & ( subclass @ Y @ X ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[56]) ).

thf(64,plain,
    ( ( subclass @ element_relation @ ( cross_product @ universal_class @ universal_class ) )
    = $true ),
    inference(copy,[status(thm)],[55]) ).

thf(65,plain,
    ( ( ! [X: $i] :
          ~ ( member @ X @ null_class ) )
    = $true ),
    inference(copy,[status(thm)],[54]) ).

thf(66,plain,
    ( ( ! [X: $i] : ( subclass @ ( rotate @ X ) @ ( cross_product @ ( cross_product @ universal_class @ universal_class ) @ universal_class ) ) )
    = $true ),
    inference(copy,[status(thm)],[53]) ).

thf(67,plain,
    ( ( ! [X: $i] : ( subclass @ ( flip @ X ) @ ( cross_product @ ( cross_product @ universal_class @ universal_class ) @ universal_class ) ) )
    = $true ),
    inference(copy,[status(thm)],[52]) ).

thf(68,plain,
    ( ( subclass @ successor_relation @ ( cross_product @ universal_class @ universal_class ) )
    = $true ),
    inference(copy,[status(thm)],[51]) ).

thf(69,plain,
    ( ( ? [X: $i] :
          ( ( member @ X @ universal_class )
          & ( inductive @ X )
          & ! [Y: $i] :
              ( ( inductive @ Y )
             => ( subclass @ X @ Y ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[50]) ).

thf(70,plain,
    ( ( ! [U: $i,X: $i] :
          ( ( member @ U @ ( power_class @ X ) )
        <=> ( ( member @ U @ universal_class )
            & ( subclass @ U @ X ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[49]) ).

thf(71,plain,
    ( ( ! [XR: $i,YR: $i] : ( subclass @ ( compose @ YR @ XR ) @ ( cross_product @ universal_class @ universal_class ) ) )
    = $true ),
    inference(copy,[status(thm)],[48]) ).

thf(72,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(73,plain,
    ( ( ~ ( subclass @ null_class @ sK1_X ) )
    = $true ),
    inference(copy,[status(thm)],[60]) ).

thf(74,plain,
    ( ( ! [SX0: $i] :
          ( ~ ( ( SX0 != null_class ) )
          | ~ ! [SX1: $i] :
                ~ ~ ( ~ ~ ( ~ ( member @ SX1 @ universal_class )
                          | ~ ( member @ SX1 @ SX0 ) )
                    | ~ ( disjoint @ SX1 @ SX0 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[72]) ).

thf(75,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)],[61]) ).

thf(76,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ( SX0 != SX1 )
                | ~ ( ~ ( subclass @ SX0 @ SX1 )
                    | ~ ( subclass @ SX1 @ SX0 ) ) )
            | ~ ( ~ ~ ( ~ ( subclass @ SX0 @ SX1 )
                      | ~ ( subclass @ SX1 @ SX0 ) )
                | ( SX0 = SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[63]) ).

thf(77,plain,
    ( ( ! [SX0: $i,SX1: $i] :
          ~ ( ~ ( ~ ( member @ SX0 @ ( power_class @ SX1 ) )
                | ~ ( ~ ( member @ SX0 @ universal_class )
                    | ~ ( subclass @ SX0 @ SX1 ) ) )
            | ~ ( ~ ~ ( ~ ( member @ SX0 @ universal_class )
                      | ~ ( subclass @ SX0 @ SX1 ) )
                | ( member @ SX0 @ ( power_class @ SX1 ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[70]) ).

thf(78,plain,
    ( ( ~ ! [SX0: $i] :
            ~ ~ ( ~ ~ ( ~ ( member @ SX0 @ universal_class )
                      | ~ ( inductive @ SX0 ) )
                | ~ ! [SX1: $i] :
                      ( ~ ( inductive @ SX1 )
                      | ( subclass @ SX0 @ SX1 ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[69]) ).

thf(79,plain,
    ! [SV1: $i] :
      ( ( subclass @ SV1 @ universal_class )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[62]) ).

thf(80,plain,
    ! [SV2: $i] :
      ( ( ~ ( member @ SV2 @ null_class ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[65]) ).

thf(81,plain,
    ! [SV3: $i] :
      ( ( subclass @ ( rotate @ SV3 ) @ ( cross_product @ ( cross_product @ universal_class @ universal_class ) @ universal_class ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[66]) ).

thf(82,plain,
    ! [SV4: $i] :
      ( ( subclass @ ( flip @ SV4 ) @ ( cross_product @ ( cross_product @ universal_class @ universal_class ) @ universal_class ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[67]) ).

thf(83,plain,
    ! [SV5: $i] :
      ( ( ! [SY18: $i] : ( subclass @ ( compose @ SY18 @ SV5 ) @ ( cross_product @ universal_class @ universal_class ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[71]) ).

thf(84,plain,
    ( ( subclass @ null_class @ sK1_X )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[73]) ).

thf(85,plain,
    ! [SV6: $i] :
      ( ( ~ ( ( SV6 != null_class ) )
        | ~ ! [SY19: $i] :
              ~ ~ ( ~ ~ ( ~ ( member @ SY19 @ universal_class )
                        | ~ ( member @ SY19 @ SV6 ) )
                  | ~ ( disjoint @ SY19 @ SV6 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[74]) ).

thf(86,plain,
    ! [SV7: $i] :
      ( ( ! [SY20: $i] :
            ~ ( ~ ( ~ ( subclass @ SV7 @ SY20 )
                  | ! [SY21: $i] :
                      ( ~ ( member @ SY21 @ SV7 )
                      | ( member @ SY21 @ SY20 ) ) )
              | ~ ( ~ ! [SY22: $i] :
                        ( ~ ( member @ SY22 @ SV7 )
                        | ( member @ SY22 @ SY20 ) )
                  | ( subclass @ SV7 @ SY20 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[75]) ).

thf(87,plain,
    ! [SV8: $i] :
      ( ( ! [SY23: $i] :
            ~ ( ~ ( ( SV8 != SY23 )
                  | ~ ( ~ ( subclass @ SV8 @ SY23 )
                      | ~ ( subclass @ SY23 @ SV8 ) ) )
              | ~ ( ~ ~ ( ~ ( subclass @ SV8 @ SY23 )
                        | ~ ( subclass @ SY23 @ SV8 ) )
                  | ( SV8 = SY23 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[76]) ).

thf(88,plain,
    ! [SV9: $i] :
      ( ( ! [SY24: $i] :
            ~ ( ~ ( ~ ( member @ SV9 @ ( power_class @ SY24 ) )
                  | ~ ( ~ ( member @ SV9 @ universal_class )
                      | ~ ( subclass @ SV9 @ SY24 ) ) )
              | ~ ( ~ ~ ( ~ ( member @ SV9 @ universal_class )
                        | ~ ( subclass @ SV9 @ SY24 ) )
                  | ( member @ SV9 @ ( power_class @ SY24 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[77]) ).

thf(89,plain,
    ( ( ! [SX0: $i] :
          ~ ~ ( ~ ~ ( ~ ( member @ SX0 @ universal_class )
                    | ~ ( inductive @ SX0 ) )
              | ~ ! [SX1: $i] :
                    ( ~ ( inductive @ SX1 )
                    | ( subclass @ SX0 @ SX1 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[78]) ).

thf(90,plain,
    ! [SV2: $i] :
      ( ( member @ SV2 @ null_class )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[80]) ).

thf(91,plain,
    ! [SV5: $i,SV10: $i] :
      ( ( subclass @ ( compose @ SV10 @ SV5 ) @ ( cross_product @ universal_class @ universal_class ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[83]) ).

thf(92,plain,
    ! [SV6: $i] :
      ( ( ( ~ ( ( SV6 != null_class ) ) )
        = $true )
      | ( ( ~ ! [SY19: $i] :
                ~ ~ ( ~ ~ ( ~ ( member @ SY19 @ universal_class )
                          | ~ ( member @ SY19 @ SV6 ) )
                    | ~ ( disjoint @ SY19 @ SV6 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[85]) ).

thf(93,plain,
    ! [SV11: $i,SV7: $i] :
      ( ( ~ ( ~ ( ~ ( subclass @ SV7 @ SV11 )
                | ! [SY25: $i] :
                    ( ~ ( member @ SY25 @ SV7 )
                    | ( member @ SY25 @ SV11 ) ) )
            | ~ ( ~ ! [SY26: $i] :
                      ( ~ ( member @ SY26 @ SV7 )
                      | ( member @ SY26 @ SV11 ) )
                | ( subclass @ SV7 @ SV11 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[86]) ).

thf(94,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ~ ( ~ ( ( SV8 != SV12 )
                | ~ ( ~ ( subclass @ SV8 @ SV12 )
                    | ~ ( subclass @ SV12 @ SV8 ) ) )
            | ~ ( ~ ~ ( ~ ( subclass @ SV8 @ SV12 )
                      | ~ ( subclass @ SV12 @ SV8 ) )
                | ( SV8 = SV12 ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[87]) ).

thf(95,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ~ ( ~ ( ~ ( member @ SV9 @ ( power_class @ SV13 ) )
                | ~ ( ~ ( member @ SV9 @ universal_class )
                    | ~ ( subclass @ SV9 @ SV13 ) ) )
            | ~ ( ~ ~ ( ~ ( member @ SV9 @ universal_class )
                      | ~ ( subclass @ SV9 @ SV13 ) )
                | ( member @ SV9 @ ( power_class @ SV13 ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[88]) ).

thf(96,plain,
    ( ( ~ ~ ( ~ ~ ( ~ ( member @ sK2_SX0 @ universal_class )
                  | ~ ( inductive @ sK2_SX0 ) )
            | ~ ! [SY27: $i] :
                  ( ~ ( inductive @ SY27 )
                  | ( subclass @ sK2_SX0 @ SY27 ) ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[89]) ).

thf(97,plain,
    ! [SV6: $i] :
      ( ( ( SV6 != null_class )
        = $false )
      | ( ( ~ ! [SY19: $i] :
                ~ ~ ( ~ ~ ( ~ ( member @ SY19 @ universal_class )
                          | ~ ( member @ SY19 @ SV6 ) )
                    | ~ ( disjoint @ SY19 @ SV6 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[92]) ).

thf(98,plain,
    ! [SV11: $i,SV7: $i] :
      ( ( ~ ( ~ ( subclass @ SV7 @ SV11 )
            | ! [SY25: $i] :
                ( ~ ( member @ SY25 @ SV7 )
                | ( member @ SY25 @ SV11 ) ) )
        | ~ ( ~ ! [SY26: $i] :
                  ( ~ ( member @ SY26 @ SV7 )
                  | ( member @ SY26 @ SV11 ) )
            | ( subclass @ SV7 @ SV11 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[93]) ).

thf(99,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ~ ( ( SV8 != SV12 )
            | ~ ( ~ ( subclass @ SV8 @ SV12 )
                | ~ ( subclass @ SV12 @ SV8 ) ) )
        | ~ ( ~ ~ ( ~ ( subclass @ SV8 @ SV12 )
                  | ~ ( subclass @ SV12 @ SV8 ) )
            | ( SV8 = SV12 ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[94]) ).

thf(100,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ~ ( ~ ( member @ SV9 @ ( power_class @ SV13 ) )
            | ~ ( ~ ( member @ SV9 @ universal_class )
                | ~ ( subclass @ SV9 @ SV13 ) ) )
        | ~ ( ~ ~ ( ~ ( member @ SV9 @ universal_class )
                  | ~ ( subclass @ SV9 @ SV13 ) )
            | ( member @ SV9 @ ( power_class @ SV13 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[95]) ).

thf(101,plain,
    ( ( ~ ( ~ ~ ( ~ ( member @ sK2_SX0 @ universal_class )
                | ~ ( inductive @ sK2_SX0 ) )
          | ~ ! [SY27: $i] :
                ( ~ ( inductive @ SY27 )
                | ( subclass @ sK2_SX0 @ SY27 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[96]) ).

thf(102,plain,
    ! [SV6: $i] :
      ( ( ( SV6 = null_class )
        = $true )
      | ( ( ~ ! [SY19: $i] :
                ~ ~ ( ~ ~ ( ~ ( member @ SY19 @ universal_class )
                          | ~ ( member @ SY19 @ SV6 ) )
                    | ~ ( disjoint @ SY19 @ SV6 ) ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[97]) ).

thf(103,plain,
    ! [SV11: $i,SV7: $i] :
      ( ( ~ ( ~ ( subclass @ SV7 @ SV11 )
            | ! [SY25: $i] :
                ( ~ ( member @ SY25 @ SV7 )
                | ( member @ SY25 @ SV11 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[98]) ).

thf(104,plain,
    ! [SV11: $i,SV7: $i] :
      ( ( ~ ( ~ ! [SY26: $i] :
                  ( ~ ( member @ SY26 @ SV7 )
                  | ( member @ SY26 @ SV11 ) )
            | ( subclass @ SV7 @ SV11 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[98]) ).

thf(105,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ~ ( ( SV8 != SV12 )
            | ~ ( ~ ( subclass @ SV8 @ SV12 )
                | ~ ( subclass @ SV12 @ SV8 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[99]) ).

thf(106,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ~ ( ~ ~ ( ~ ( subclass @ SV8 @ SV12 )
                  | ~ ( subclass @ SV12 @ SV8 ) )
            | ( SV8 = SV12 ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[99]) ).

thf(107,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ~ ( ~ ( member @ SV9 @ ( power_class @ SV13 ) )
            | ~ ( ~ ( member @ SV9 @ universal_class )
                | ~ ( subclass @ SV9 @ SV13 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[100]) ).

thf(108,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ~ ( ~ ~ ( ~ ( member @ SV9 @ universal_class )
                  | ~ ( subclass @ SV9 @ SV13 ) )
            | ( member @ SV9 @ ( power_class @ SV13 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[100]) ).

thf(109,plain,
    ( ( ~ ~ ( ~ ( member @ sK2_SX0 @ universal_class )
            | ~ ( inductive @ sK2_SX0 ) )
      | ~ ! [SY27: $i] :
            ( ~ ( inductive @ SY27 )
            | ( subclass @ sK2_SX0 @ SY27 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[101]) ).

thf(110,plain,
    ! [SV6: $i] :
      ( ( ( ! [SY19: $i] :
              ~ ~ ( ~ ~ ( ~ ( member @ SY19 @ universal_class )
                        | ~ ( member @ SY19 @ SV6 ) )
                  | ~ ( disjoint @ SY19 @ SV6 ) ) )
        = $false )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[102]) ).

thf(111,plain,
    ! [SV11: $i,SV7: $i] :
      ( ( ~ ( subclass @ SV7 @ SV11 )
        | ! [SY25: $i] :
            ( ~ ( member @ SY25 @ SV7 )
            | ( member @ SY25 @ SV11 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[103]) ).

thf(112,plain,
    ! [SV11: $i,SV7: $i] :
      ( ( ~ ! [SY26: $i] :
              ( ~ ( member @ SY26 @ SV7 )
              | ( member @ SY26 @ SV11 ) )
        | ( subclass @ SV7 @ SV11 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[104]) ).

thf(113,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( SV8 != SV12 )
        | ~ ( ~ ( subclass @ SV8 @ SV12 )
            | ~ ( subclass @ SV12 @ SV8 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[105]) ).

thf(114,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ~ ~ ( ~ ( subclass @ SV8 @ SV12 )
              | ~ ( subclass @ SV12 @ SV8 ) )
        | ( SV8 = SV12 ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[106]) ).

thf(115,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ~ ( member @ SV9 @ ( power_class @ SV13 ) )
        | ~ ( ~ ( member @ SV9 @ universal_class )
            | ~ ( subclass @ SV9 @ SV13 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[107]) ).

thf(116,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ~ ~ ( ~ ( member @ SV9 @ universal_class )
              | ~ ( subclass @ SV9 @ SV13 ) )
        | ( member @ SV9 @ ( power_class @ SV13 ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[108]) ).

thf(117,plain,
    ( ( ~ ~ ( ~ ( member @ sK2_SX0 @ universal_class )
            | ~ ( inductive @ sK2_SX0 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[109]) ).

thf(118,plain,
    ( ( ~ ! [SY27: $i] :
            ( ~ ( inductive @ SY27 )
            | ( subclass @ sK2_SX0 @ SY27 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[109]) ).

thf(119,plain,
    ! [SV6: $i] :
      ( ( ( ~ ~ ( ~ ~ ( ~ ( member @ ( sK3_SY19 @ SV6 ) @ universal_class )
                      | ~ ( member @ ( sK3_SY19 @ SV6 ) @ SV6 ) )
                | ~ ( disjoint @ ( sK3_SY19 @ SV6 ) @ SV6 ) ) )
        = $false )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[110]) ).

thf(120,plain,
    ! [SV11: $i,SV7: $i] :
      ( ( ( ~ ( subclass @ SV7 @ SV11 ) )
        = $true )
      | ( ( ! [SY25: $i] :
              ( ~ ( member @ SY25 @ SV7 )
              | ( member @ SY25 @ SV11 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[111]) ).

thf(121,plain,
    ! [SV11: $i,SV7: $i] :
      ( ( ( ~ ! [SY26: $i] :
                ( ~ ( member @ SY26 @ SV7 )
                | ( member @ SY26 @ SV11 ) ) )
        = $true )
      | ( ( subclass @ SV7 @ SV11 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[112]) ).

thf(122,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( SV8 != SV12 )
        = $true )
      | ( ( ~ ( ~ ( subclass @ SV8 @ SV12 )
              | ~ ( subclass @ SV12 @ SV8 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[113]) ).

thf(123,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( ~ ~ ( ~ ( subclass @ SV8 @ SV12 )
                | ~ ( subclass @ SV12 @ SV8 ) ) )
        = $true )
      | ( ( SV8 = SV12 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[114]) ).

thf(124,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( ~ ( member @ SV9 @ ( power_class @ SV13 ) ) )
        = $true )
      | ( ( ~ ( ~ ( member @ SV9 @ universal_class )
              | ~ ( subclass @ SV9 @ SV13 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[115]) ).

thf(125,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( ~ ~ ( ~ ( member @ SV9 @ universal_class )
                | ~ ( subclass @ SV9 @ SV13 ) ) )
        = $true )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[116]) ).

thf(126,plain,
    ( ( ~ ( ~ ( member @ sK2_SX0 @ universal_class )
          | ~ ( inductive @ sK2_SX0 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[117]) ).

thf(127,plain,
    ( ( ! [SY27: $i] :
          ( ~ ( inductive @ SY27 )
          | ( subclass @ sK2_SX0 @ SY27 ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[118]) ).

thf(128,plain,
    ! [SV6: $i] :
      ( ( ( ~ ( ~ ~ ( ~ ( member @ ( sK3_SY19 @ SV6 ) @ universal_class )
                    | ~ ( member @ ( sK3_SY19 @ SV6 ) @ SV6 ) )
              | ~ ( disjoint @ ( sK3_SY19 @ SV6 ) @ SV6 ) ) )
        = $true )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[119]) ).

thf(129,plain,
    ! [SV11: $i,SV7: $i] :
      ( ( ( subclass @ SV7 @ SV11 )
        = $false )
      | ( ( ! [SY25: $i] :
              ( ~ ( member @ SY25 @ SV7 )
              | ( member @ SY25 @ SV11 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[120]) ).

thf(130,plain,
    ! [SV11: $i,SV7: $i] :
      ( ( ( ! [SY26: $i] :
              ( ~ ( member @ SY26 @ SV7 )
              | ( member @ SY26 @ SV11 ) ) )
        = $false )
      | ( ( subclass @ SV7 @ SV11 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[121]) ).

thf(131,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( SV8 = SV12 )
        = $false )
      | ( ( ~ ( ~ ( subclass @ SV8 @ SV12 )
              | ~ ( subclass @ SV12 @ SV8 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[122]) ).

thf(132,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( ~ ( ~ ( subclass @ SV8 @ SV12 )
              | ~ ( subclass @ SV12 @ SV8 ) ) )
        = $false )
      | ( ( SV8 = SV12 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[123]) ).

thf(133,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $false )
      | ( ( ~ ( ~ ( member @ SV9 @ universal_class )
              | ~ ( subclass @ SV9 @ SV13 ) ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[124]) ).

thf(134,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( ~ ( ~ ( member @ SV9 @ universal_class )
              | ~ ( subclass @ SV9 @ SV13 ) ) )
        = $false )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[125]) ).

thf(135,plain,
    ( ( ~ ( member @ sK2_SX0 @ universal_class )
      | ~ ( inductive @ sK2_SX0 ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[126]) ).

thf(136,plain,
    ! [SV14: $i] :
      ( ( ~ ( inductive @ SV14 )
        | ( subclass @ sK2_SX0 @ SV14 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[127]) ).

thf(137,plain,
    ! [SV6: $i] :
      ( ( ( ~ ~ ( ~ ( member @ ( sK3_SY19 @ SV6 ) @ universal_class )
                | ~ ( member @ ( sK3_SY19 @ SV6 ) @ SV6 ) )
          | ~ ( disjoint @ ( sK3_SY19 @ SV6 ) @ SV6 ) )
        = $false )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[128]) ).

thf(138,plain,
    ! [SV11: $i,SV7: $i,SV15: $i] :
      ( ( ( ~ ( member @ SV15 @ SV7 )
          | ( member @ SV15 @ SV11 ) )
        = $true )
      | ( ( subclass @ SV7 @ SV11 )
        = $false ) ),
    inference(extcnf_forall_pos,[status(thm)],[129]) ).

thf(139,plain,
    ! [SV7: $i,SV11: $i] :
      ( ( ( ~ ( member @ ( sK4_SY26 @ SV11 @ SV7 ) @ SV7 )
          | ( member @ ( sK4_SY26 @ SV11 @ SV7 ) @ SV11 ) )
        = $false )
      | ( ( subclass @ SV7 @ SV11 )
        = $true ) ),
    inference(extcnf_forall_neg,[status(esa)],[130]) ).

thf(140,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( ~ ( subclass @ SV8 @ SV12 )
          | ~ ( subclass @ SV12 @ SV8 ) )
        = $false )
      | ( ( SV8 = SV12 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[131]) ).

thf(141,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( ~ ( subclass @ SV8 @ SV12 )
          | ~ ( subclass @ SV12 @ SV8 ) )
        = $true )
      | ( ( SV8 = SV12 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[132]) ).

thf(142,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( ~ ( member @ SV9 @ universal_class )
          | ~ ( subclass @ SV9 @ SV13 ) )
        = $false )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[133]) ).

thf(143,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( ~ ( member @ SV9 @ universal_class )
          | ~ ( subclass @ SV9 @ SV13 ) )
        = $true )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[134]) ).

thf(144,plain,
    ( ( ~ ( member @ sK2_SX0 @ universal_class ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[135]) ).

thf(145,plain,
    ( ( ~ ( inductive @ sK2_SX0 ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[135]) ).

thf(146,plain,
    ! [SV14: $i] :
      ( ( ( ~ ( inductive @ SV14 ) )
        = $true )
      | ( ( subclass @ sK2_SX0 @ SV14 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[136]) ).

thf(147,plain,
    ! [SV6: $i] :
      ( ( ( ~ ~ ( ~ ( member @ ( sK3_SY19 @ SV6 ) @ universal_class )
                | ~ ( member @ ( sK3_SY19 @ SV6 ) @ SV6 ) ) )
        = $false )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[137]) ).

thf(148,plain,
    ! [SV6: $i] :
      ( ( ( ~ ( disjoint @ ( sK3_SY19 @ SV6 ) @ SV6 ) )
        = $false )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[137]) ).

thf(149,plain,
    ! [SV11: $i,SV7: $i,SV15: $i] :
      ( ( ( ~ ( member @ SV15 @ SV7 ) )
        = $true )
      | ( ( member @ SV15 @ SV11 )
        = $true )
      | ( ( subclass @ SV7 @ SV11 )
        = $false ) ),
    inference(extcnf_or_pos,[status(thm)],[138]) ).

thf(150,plain,
    ! [SV7: $i,SV11: $i] :
      ( ( ( ~ ( member @ ( sK4_SY26 @ SV11 @ SV7 ) @ SV7 ) )
        = $false )
      | ( ( subclass @ SV7 @ SV11 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[139]) ).

thf(151,plain,
    ! [SV7: $i,SV11: $i] :
      ( ( ( member @ ( sK4_SY26 @ SV11 @ SV7 ) @ SV11 )
        = $false )
      | ( ( subclass @ SV7 @ SV11 )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[139]) ).

thf(152,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( ~ ( subclass @ SV8 @ SV12 ) )
        = $false )
      | ( ( SV8 = SV12 )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[140]) ).

thf(153,plain,
    ! [SV8: $i,SV12: $i] :
      ( ( ( ~ ( subclass @ SV12 @ SV8 ) )
        = $false )
      | ( ( SV8 = SV12 )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[140]) ).

thf(154,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( ~ ( subclass @ SV8 @ SV12 ) )
        = $true )
      | ( ( ~ ( subclass @ SV12 @ SV8 ) )
        = $true )
      | ( ( SV8 = SV12 )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[141]) ).

thf(155,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( ~ ( member @ SV9 @ universal_class ) )
        = $false )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[142]) ).

thf(156,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( ~ ( subclass @ SV9 @ SV13 ) )
        = $false )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $false ) ),
    inference(extcnf_or_neg,[status(thm)],[142]) ).

thf(157,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( ~ ( member @ SV9 @ universal_class ) )
        = $true )
      | ( ( ~ ( subclass @ SV9 @ SV13 ) )
        = $true )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[143]) ).

thf(158,plain,
    ( ( member @ sK2_SX0 @ universal_class )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[144]) ).

thf(159,plain,
    ( ( inductive @ sK2_SX0 )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[145]) ).

thf(160,plain,
    ! [SV14: $i] :
      ( ( ( inductive @ SV14 )
        = $false )
      | ( ( subclass @ sK2_SX0 @ SV14 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[146]) ).

thf(161,plain,
    ! [SV6: $i] :
      ( ( ( ~ ( ~ ( member @ ( sK3_SY19 @ SV6 ) @ universal_class )
              | ~ ( member @ ( sK3_SY19 @ SV6 ) @ SV6 ) ) )
        = $true )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[147]) ).

thf(162,plain,
    ! [SV6: $i] :
      ( ( ( disjoint @ ( sK3_SY19 @ SV6 ) @ SV6 )
        = $true )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[148]) ).

thf(163,plain,
    ! [SV11: $i,SV7: $i,SV15: $i] :
      ( ( ( member @ SV15 @ SV7 )
        = $false )
      | ( ( member @ SV15 @ SV11 )
        = $true )
      | ( ( subclass @ SV7 @ SV11 )
        = $false ) ),
    inference(extcnf_not_pos,[status(thm)],[149]) ).

thf(164,plain,
    ! [SV7: $i,SV11: $i] :
      ( ( ( member @ ( sK4_SY26 @ SV11 @ SV7 ) @ SV7 )
        = $true )
      | ( ( subclass @ SV7 @ SV11 )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[150]) ).

thf(165,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( subclass @ SV8 @ SV12 )
        = $true )
      | ( ( SV8 = SV12 )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[152]) ).

thf(166,plain,
    ! [SV8: $i,SV12: $i] :
      ( ( ( subclass @ SV12 @ SV8 )
        = $true )
      | ( ( SV8 = SV12 )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[153]) ).

thf(167,plain,
    ! [SV12: $i,SV8: $i] :
      ( ( ( subclass @ SV8 @ SV12 )
        = $false )
      | ( ( ~ ( subclass @ SV12 @ SV8 ) )
        = $true )
      | ( ( SV8 = SV12 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[154]) ).

thf(168,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( member @ SV9 @ universal_class )
        = $true )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[155]) ).

thf(169,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( subclass @ SV9 @ SV13 )
        = $true )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $false ) ),
    inference(extcnf_not_neg,[status(thm)],[156]) ).

thf(170,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( member @ SV9 @ universal_class )
        = $false )
      | ( ( ~ ( subclass @ SV9 @ SV13 ) )
        = $true )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[157]) ).

thf(171,plain,
    ! [SV6: $i] :
      ( ( ( ~ ( member @ ( sK3_SY19 @ SV6 ) @ universal_class )
          | ~ ( member @ ( sK3_SY19 @ SV6 ) @ SV6 ) )
        = $false )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[161]) ).

thf(172,plain,
    ! [SV8: $i,SV12: $i] :
      ( ( ( subclass @ SV12 @ SV8 )
        = $false )
      | ( ( subclass @ SV8 @ SV12 )
        = $false )
      | ( ( SV8 = SV12 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[167]) ).

thf(173,plain,
    ! [SV13: $i,SV9: $i] :
      ( ( ( subclass @ SV9 @ SV13 )
        = $false )
      | ( ( member @ SV9 @ universal_class )
        = $false )
      | ( ( member @ SV9 @ ( power_class @ SV13 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[170]) ).

thf(174,plain,
    ! [SV6: $i] :
      ( ( ( ~ ( member @ ( sK3_SY19 @ SV6 ) @ universal_class ) )
        = $false )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[171]) ).

thf(175,plain,
    ! [SV6: $i] :
      ( ( ( ~ ( member @ ( sK3_SY19 @ SV6 ) @ SV6 ) )
        = $false )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_or_neg,[status(thm)],[171]) ).

thf(176,plain,
    ! [SV6: $i] :
      ( ( ( member @ ( sK3_SY19 @ SV6 ) @ universal_class )
        = $true )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[174]) ).

thf(177,plain,
    ! [SV6: $i] :
      ( ( ( member @ ( sK3_SY19 @ SV6 ) @ SV6 )
        = $true )
      | ( ( SV6 = null_class )
        = $true ) ),
    inference(extcnf_not_neg,[status(thm)],[175]) ).

thf(178,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[64,177,176,173,172,169,168,166,165,164,163,162,160,159,158,151,91,90,84,82,81,79,68]) ).

thf(179,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[178]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : SET062+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
% 0.07/0.19  % Computer : n014.cluster.edu
% 0.07/0.19  % Model    : x86_64 x86_64
% 0.07/0.19  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.19  % Memory   : 8046.5625MB
% 0.07/0.19  % OS       : Linux 6.8.0-71-generic
% 0.07/0.19  % CPULimit : 300
% 0.07/0.19  % WCLimit  : 300
% 0.07/0.19  % DateTime : Tue Oct  6 14:29:11 UTC 2026
% 0.07/0.19  % CPUTime  : 
% 0.07/0.19  Running leo --cores 7 --timeout 300 --proofoutput 1 --foatp e --atp e=/export/starexec/sandbox/solver/bin/eprover /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.07/0.25  
% 0.07/0.25   No.of.Axioms: 12
% 0.07/0.25  
% 0.07/0.25   Length.of.Defs: 0
% 0.07/0.25  
% 0.07/0.25   Contains.Choice.Funs: false
% 0.07/0.25  ...
% 0.07/0.25  
% 0.07/0.25  ********************************
% 0.07/0.25  *   All subproblems solved!    *
% 0.07/0.25  ********************************
% 0.07/0.25  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:1,axioms:12,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:178,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.07/0.25  
% 0.07/0.25  %**** Beginning of derivation protocol ****
% 0.07/0.25  % SZS output start CNFRefutation
% See solution above
% 0.07/0.26  
% 0.07/0.26  %**** End of derivation protocol ****
% 0.07/0.26  %**** no. of clauses in derivation: 148 ****
% 0.07/0.26  %**** clause counter: 178 ****
% 0.07/0.26  
% 0.07/0.26  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p : (rf:1,axioms:12,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:178,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------