TSTP Solution File: SET903+1 by LEO-II---1.7.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : LEO-II---1.7.0
% Problem  : SET903+1 : TPTP v8.1.0. Released v3.2.0.
% Transfm  : none
% Format   : tptp
% Command  : leo --timeout %d --proofoutput 1 --foatp e --atp e=./eprover %s

% Computer : n017.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 600s
% DateTime : Tue Jul 19 03:06:06 EDT 2022

% Result   : Theorem 0.19s 0.47s
% Output   : CNFRefutation 0.19s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   22
%            Number of leaves      :   18
% Syntax   : Number of formulae    :  166 ( 111 unt;   9 typ;   0 def)
%            Number of atoms       : 1212 ( 934 equ;   0 cnn)
%            Maximal formula atoms :    7 (   7 avg)
%            Number of connectives : 1964 ( 436   ~; 534   |;  53   &; 937   @)
%                                         (   0 <=>;   4  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   3 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    4 (   4   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   12 (   9 usr;   8 con; 0-2 aty)
%            Number of variables   :  462 (   0   ^ 458   !;   4   ?; 462   :)

% Comments : 
%------------------------------------------------------------------------------
thf(tp_empty,type,
    empty: $i > $o ).

thf(tp_empty_set,type,
    empty_set: $i ).

thf(tp_sK1_A,type,
    sK1_A: $i ).

thf(tp_sK2_SY16,type,
    sK2_SY16: $i ).

thf(tp_sK3_SY18,type,
    sK3_SY18: $i ).

thf(tp_sK4_A,type,
    sK4_A: $i ).

thf(tp_sK5_A,type,
    sK5_A: $i ).

thf(tp_set_union2,type,
    set_union2: $i > $i > $i ).

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

thf(1,axiom,
    ! [A: $i,B: $i,C: $i] :
      ~ ( ( ( singleton @ A )
          = ( set_union2 @ B @ C ) )
        & ~ ( ( B
              = ( singleton @ A ) )
            & ( C
              = ( singleton @ A ) ) )
        & ~ ( ( B = empty_set )
            & ( C
              = ( singleton @ A ) ) )
        & ~ ( ( B
              = ( singleton @ A ) )
            & ( C = empty_set ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t43_zfmisc_1) ).

thf(2,axiom,
    ? [A: $i] :
      ~ ( empty @ A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',rc2_xboole_0) ).

thf(3,axiom,
    ? [A: $i] : ( empty @ A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',rc1_xboole_0) ).

thf(4,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ A )
      = A ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',idempotence_k2_xboole_0) ).

thf(5,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ B @ A ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc3_xboole_0) ).

thf(6,axiom,
    ! [A: $i,B: $i] :
      ( ~ ( empty @ A )
     => ~ ( empty @ ( set_union2 @ A @ B ) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc2_xboole_0) ).

thf(7,axiom,
    empty @ empty_set,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',fc1_xboole_0) ).

thf(8,axiom,
    ! [A: $i,B: $i] :
      ( ( set_union2 @ A @ B )
      = ( set_union2 @ B @ A ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',commutativity_k2_xboole_0) ).

thf(9,conjecture,
    ! [A: $i,B: $i,C: $i] :
      ~ ( ( ( singleton @ A )
          = ( set_union2 @ B @ C ) )
        & ( B != C )
        & ( B != empty_set )
        & ( C != empty_set ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',t44_zfmisc_1) ).

thf(10,negated_conjecture,
    ( ( ! [A: $i,B: $i,C: $i] :
          ~ ( ( ( singleton @ A )
              = ( set_union2 @ B @ C ) )
            & ( B != C )
            & ( B != empty_set )
            & ( C != empty_set ) ) )
    = $false ),
    inference(negate_conjecture,[status(cth)],[9]) ).

thf(11,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ~ ( ( ( singleton @ A )
              = ( set_union2 @ B @ C ) )
            & ( B != C )
            & ( B != empty_set )
            & ( C != empty_set ) ) )
    = $false ),
    inference(unfold_def,[status(thm)],[10]) ).

thf(12,plain,
    ( ( ! [A: $i,B: $i,C: $i] :
          ~ ( ( ( singleton @ A )
              = ( set_union2 @ B @ C ) )
            & ~ ( ( B
                  = ( singleton @ A ) )
                & ( C
                  = ( singleton @ A ) ) )
            & ~ ( ( B = empty_set )
                & ( C
                  = ( singleton @ A ) ) )
            & ~ ( ( B
                  = ( singleton @ A ) )
                & ( C = empty_set ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[1]) ).

thf(13,plain,
    ( ( ? [A: $i] :
          ~ ( empty @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[2]) ).

thf(14,plain,
    ( ( ? [A: $i] : ( empty @ A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[3]) ).

thf(15,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(unfold_def,[status(thm)],[4]) ).

thf(16,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[5]) ).

thf(17,plain,
    ( ( ! [A: $i,B: $i] :
          ( ~ ( empty @ A )
         => ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[6]) ).

thf(18,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(unfold_def,[status(thm)],[7]) ).

thf(19,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[8]) ).

thf(20,plain,
    ( ( ! [SY16: $i,SY17: $i] :
          ~ ( ( ( singleton @ sK1_A )
              = ( set_union2 @ SY16 @ SY17 ) )
            & ( SY16 != SY17 )
            & ( SY16 != empty_set )
            & ( SY17 != empty_set ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[11]) ).

thf(21,plain,
    ( ( ! [SY18: $i] :
          ~ ( ( ( singleton @ sK1_A )
              = ( set_union2 @ sK2_SY16 @ SY18 ) )
            & ( sK2_SY16 != SY18 )
            & ( sK2_SY16 != empty_set )
            & ( SY18 != empty_set ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[20]) ).

thf(22,plain,
    ( ( ~ ( ( ( singleton @ sK1_A )
            = ( set_union2 @ sK2_SY16 @ sK3_SY18 ) )
          & ( sK2_SY16 != sK3_SY18 )
          & ( sK2_SY16 != empty_set )
          & ( sK3_SY18 != empty_set ) ) )
    = $false ),
    inference(extcnf_forall_neg,[status(esa)],[21]) ).

thf(23,plain,
    ( ( ( ( singleton @ sK1_A )
        = ( set_union2 @ sK2_SY16 @ sK3_SY18 ) )
      & ( sK2_SY16 != sK3_SY18 )
      & ( sK2_SY16 != empty_set )
      & ( sK3_SY18 != empty_set ) )
    = $true ),
    inference(polarity_switch,[status(thm)],[22]) ).

thf(24,plain,
    ( ( ( sK3_SY18 != empty_set )
      & ( sK2_SY16 != empty_set )
      & ( sK2_SY16 != sK3_SY18 )
      & ( ( singleton @ sK1_A )
        = ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[23]) ).

thf(25,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i] :
              ( ! [C: $i] :
                  ( ( singleton @ A )
                 != ( set_union2 @ B @ C ) )
              | ( B
                = ( singleton @ A ) )
              | ( B = empty_set )
              | ( B
                = ( singleton @ A ) ) )
          & ! [B: $i] :
              ( ! [C: $i] :
                  ( ( ( singleton @ A )
                   != ( set_union2 @ B @ C ) )
                  | ( C
                    = ( singleton @ A ) ) )
              | ( B = empty_set )
              | ( B
                = ( singleton @ A ) ) )
          & ! [B: $i] :
              ( ! [C: $i] :
                  ( ( ( singleton @ A )
                   != ( set_union2 @ B @ C ) )
                  | ( B
                    = ( singleton @ A ) )
                  | ( C
                    = ( singleton @ A ) ) )
              | ( B
                = ( singleton @ A ) ) )
          & ! [B: $i] :
              ( ! [C: $i] :
                  ( ( ( singleton @ A )
                   != ( set_union2 @ B @ C ) )
                  | ( C
                    = ( singleton @ A ) )
                  | ( C
                    = ( singleton @ A ) ) )
              | ( B
                = ( singleton @ A ) ) )
          & ! [B: $i,C: $i] :
              ( ( ( singleton @ A )
               != ( set_union2 @ B @ C ) )
              | ( B
                = ( singleton @ A ) )
              | ( B = empty_set )
              | ( C = empty_set ) )
          & ! [B: $i,C: $i] :
              ( ( ( singleton @ A )
               != ( set_union2 @ B @ C ) )
              | ( C
                = ( singleton @ A ) )
              | ( B = empty_set )
              | ( C = empty_set ) )
          & ! [B: $i,C: $i] :
              ( ( ( singleton @ A )
               != ( set_union2 @ B @ C ) )
              | ( B
                = ( singleton @ A ) )
              | ( C
                = ( singleton @ A ) )
              | ( C = empty_set ) )
          & ! [B: $i,C: $i] :
              ( ( ( singleton @ A )
               != ( set_union2 @ B @ C ) )
              | ( C
                = ( singleton @ A ) )
              | ( C
                = ( singleton @ A ) )
              | ( C = empty_set ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[12]) ).

thf(26,plain,
    ( ( ~ ( empty @ sK4_A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[13]) ).

thf(27,plain,
    ( ( empty @ sK5_A )
    = $true ),
    inference(extcnf_combined,[status(esa)],[14]) ).

thf(28,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[15]) ).

thf(29,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[16]) ).

thf(30,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(extcnf_combined,[status(esa)],[17]) ).

thf(31,plain,
    ( ( ! [A: $i,B: $i] :
          ( ( set_union2 @ A @ B )
          = ( set_union2 @ B @ A ) ) )
    = $true ),
    inference(copy,[status(thm)],[19]) ).

thf(32,plain,
    ( ( empty @ empty_set )
    = $true ),
    inference(copy,[status(thm)],[18]) ).

thf(33,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ A @ B ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[30]) ).

thf(34,plain,
    ( ( ! [A: $i] :
          ( ( empty @ A )
          | ! [B: $i] :
              ~ ( empty @ ( set_union2 @ B @ A ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[29]) ).

thf(35,plain,
    ( ( ! [A: $i] :
          ( ( set_union2 @ A @ A )
          = A ) )
    = $true ),
    inference(copy,[status(thm)],[28]) ).

thf(36,plain,
    ( ( empty @ sK5_A )
    = $true ),
    inference(copy,[status(thm)],[27]) ).

thf(37,plain,
    ( ( ~ ( empty @ sK4_A ) )
    = $true ),
    inference(copy,[status(thm)],[26]) ).

thf(38,plain,
    ( ( ! [A: $i] :
          ( ! [B: $i] :
              ( ! [C: $i] :
                  ( ( singleton @ A )
                 != ( set_union2 @ B @ C ) )
              | ( B
                = ( singleton @ A ) )
              | ( B = empty_set )
              | ( B
                = ( singleton @ A ) ) )
          & ! [B: $i] :
              ( ! [C: $i] :
                  ( ( ( singleton @ A )
                   != ( set_union2 @ B @ C ) )
                  | ( C
                    = ( singleton @ A ) ) )
              | ( B = empty_set )
              | ( B
                = ( singleton @ A ) ) )
          & ! [B: $i] :
              ( ! [C: $i] :
                  ( ( ( singleton @ A )
                   != ( set_union2 @ B @ C ) )
                  | ( B
                    = ( singleton @ A ) )
                  | ( C
                    = ( singleton @ A ) ) )
              | ( B
                = ( singleton @ A ) ) )
          & ! [B: $i] :
              ( ! [C: $i] :
                  ( ( ( singleton @ A )
                   != ( set_union2 @ B @ C ) )
                  | ( C
                    = ( singleton @ A ) )
                  | ( C
                    = ( singleton @ A ) ) )
              | ( B
                = ( singleton @ A ) ) )
          & ! [B: $i,C: $i] :
              ( ( ( singleton @ A )
               != ( set_union2 @ B @ C ) )
              | ( B
                = ( singleton @ A ) )
              | ( B = empty_set )
              | ( C = empty_set ) )
          & ! [B: $i,C: $i] :
              ( ( ( singleton @ A )
               != ( set_union2 @ B @ C ) )
              | ( C
                = ( singleton @ A ) )
              | ( B = empty_set )
              | ( C = empty_set ) )
          & ! [B: $i,C: $i] :
              ( ( ( singleton @ A )
               != ( set_union2 @ B @ C ) )
              | ( B
                = ( singleton @ A ) )
              | ( C
                = ( singleton @ A ) )
              | ( C = empty_set ) )
          & ! [B: $i,C: $i] :
              ( ( ( singleton @ A )
               != ( set_union2 @ B @ C ) )
              | ( C
                = ( singleton @ A ) )
              | ( C
                = ( singleton @ A ) )
              | ( C = empty_set ) ) ) )
    = $true ),
    inference(copy,[status(thm)],[25]) ).

thf(39,plain,
    ( ( ( sK3_SY18 != empty_set )
      & ( sK2_SY16 != empty_set )
      & ( sK2_SY16 != sK3_SY18 )
      & ( ( singleton @ sK1_A )
        = ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) )
    = $true ),
    inference(copy,[status(thm)],[24]) ).

thf(40,plain,
    ( ( ~ ( ~ ( ( sK3_SY18 != empty_set ) )
          | ~ ~ ( ~ ( ( sK2_SY16 != empty_set ) )
                | ~ ~ ( ~ ( ( sK2_SY16 != sK3_SY18 ) )
                      | ( ( singleton @ sK1_A )
                       != ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[39]) ).

thf(41,plain,
    ( ( ! [SX0: $i] :
          ~ ( ~ ~ ( ~ ~ ( ~ ! [SX1: $i] :
                              ( ! [SX2: $i] :
                                  ( ( singleton @ SX0 )
                                 != ( set_union2 @ SX1 @ SX2 ) )
                              | ( SX1
                                = ( singleton @ SX0 ) )
                              | ( SX1 = empty_set )
                              | ( SX1
                                = ( singleton @ SX0 ) ) )
                        | ~ ! [SX1: $i] :
                              ( ! [SX2: $i] :
                                  ( ( ( singleton @ SX0 )
                                   != ( set_union2 @ SX1 @ SX2 ) )
                                  | ( SX2
                                    = ( singleton @ SX0 ) ) )
                              | ( SX1 = empty_set )
                              | ( SX1
                                = ( singleton @ SX0 ) ) ) )
                  | ~ ~ ( ~ ! [SX1: $i] :
                              ( ! [SX2: $i] :
                                  ( ( ( singleton @ SX0 )
                                   != ( set_union2 @ SX1 @ SX2 ) )
                                  | ( SX1
                                    = ( singleton @ SX0 ) )
                                  | ( SX2
                                    = ( singleton @ SX0 ) ) )
                              | ( SX1
                                = ( singleton @ SX0 ) ) )
                        | ~ ! [SX1: $i] :
                              ( ! [SX2: $i] :
                                  ( ( ( singleton @ SX0 )
                                   != ( set_union2 @ SX1 @ SX2 ) )
                                  | ( SX2
                                    = ( singleton @ SX0 ) )
                                  | ( SX2
                                    = ( singleton @ SX0 ) ) )
                              | ( SX1
                                = ( singleton @ SX0 ) ) ) ) )
            | ~ ~ ( ~ ~ ( ~ ! [SX1: $i,SX2: $i] :
                              ( ( ( singleton @ SX0 )
                               != ( set_union2 @ SX1 @ SX2 ) )
                              | ( SX1
                                = ( singleton @ SX0 ) )
                              | ( SX1 = empty_set )
                              | ( SX2 = empty_set ) )
                        | ~ ! [SX1: $i,SX2: $i] :
                              ( ( ( singleton @ SX0 )
                               != ( set_union2 @ SX1 @ SX2 ) )
                              | ( SX2
                                = ( singleton @ SX0 ) )
                              | ( SX1 = empty_set )
                              | ( SX2 = empty_set ) ) )
                  | ~ ~ ( ~ ! [SX1: $i,SX2: $i] :
                              ( ( ( singleton @ SX0 )
                               != ( set_union2 @ SX1 @ SX2 ) )
                              | ( SX1
                                = ( singleton @ SX0 ) )
                              | ( SX2
                                = ( singleton @ SX0 ) )
                              | ( SX2 = empty_set ) )
                        | ~ ! [SX1: $i,SX2: $i] :
                              ( ( ( singleton @ SX0 )
                               != ( set_union2 @ SX1 @ SX2 ) )
                              | ( SX2
                                = ( singleton @ SX0 ) )
                              | ( SX2
                                = ( singleton @ SX0 ) )
                              | ( SX2 = empty_set ) ) ) ) ) )
    = $true ),
    inference(unfold_def,[status(thm)],[38]) ).

thf(42,plain,
    ! [SV1: $i] :
      ( ( ! [SY19: $i] :
            ( ( set_union2 @ SV1 @ SY19 )
            = ( set_union2 @ SY19 @ SV1 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[31]) ).

thf(43,plain,
    ! [SV2: $i] :
      ( ( ( empty @ SV2 )
        | ! [SY20: $i] :
            ~ ( empty @ ( set_union2 @ SV2 @ SY20 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[33]) ).

thf(44,plain,
    ! [SV3: $i] :
      ( ( ( empty @ SV3 )
        | ! [SY21: $i] :
            ~ ( empty @ ( set_union2 @ SY21 @ SV3 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[34]) ).

thf(45,plain,
    ! [SV4: $i] :
      ( ( ( set_union2 @ SV4 @ SV4 )
        = SV4 )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[35]) ).

thf(46,plain,
    ( ( empty @ sK4_A )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[37]) ).

thf(47,plain,
    ( ( ~ ( ( sK3_SY18 != empty_set ) )
      | ~ ~ ( ~ ( ( sK2_SY16 != empty_set ) )
            | ~ ~ ( ~ ( ( sK2_SY16 != sK3_SY18 ) )
                  | ( ( singleton @ sK1_A )
                   != ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[40]) ).

thf(48,plain,
    ! [SV5: $i] :
      ( ( ~ ( ~ ~ ( ~ ~ ( ~ ! [SY22: $i] :
                              ( ! [SY23: $i] :
                                  ( ( singleton @ SV5 )
                                 != ( set_union2 @ SY22 @ SY23 ) )
                              | ( SY22
                                = ( singleton @ SV5 ) )
                              | ( SY22 = empty_set )
                              | ( SY22
                                = ( singleton @ SV5 ) ) )
                        | ~ ! [SY24: $i] :
                              ( ! [SY25: $i] :
                                  ( ( ( singleton @ SV5 )
                                   != ( set_union2 @ SY24 @ SY25 ) )
                                  | ( SY25
                                    = ( singleton @ SV5 ) ) )
                              | ( SY24 = empty_set )
                              | ( SY24
                                = ( singleton @ SV5 ) ) ) )
                  | ~ ~ ( ~ ! [SY26: $i] :
                              ( ! [SY27: $i] :
                                  ( ( ( singleton @ SV5 )
                                   != ( set_union2 @ SY26 @ SY27 ) )
                                  | ( SY26
                                    = ( singleton @ SV5 ) )
                                  | ( SY27
                                    = ( singleton @ SV5 ) ) )
                              | ( SY26
                                = ( singleton @ SV5 ) ) )
                        | ~ ! [SY28: $i] :
                              ( ! [SY29: $i] :
                                  ( ( ( singleton @ SV5 )
                                   != ( set_union2 @ SY28 @ SY29 ) )
                                  | ( SY29
                                    = ( singleton @ SV5 ) )
                                  | ( SY29
                                    = ( singleton @ SV5 ) ) )
                              | ( SY28
                                = ( singleton @ SV5 ) ) ) ) )
            | ~ ~ ( ~ ~ ( ~ ! [SY30: $i,SY31: $i] :
                              ( ( ( singleton @ SV5 )
                               != ( set_union2 @ SY30 @ SY31 ) )
                              | ( SY30
                                = ( singleton @ SV5 ) )
                              | ( SY30 = empty_set )
                              | ( SY31 = empty_set ) )
                        | ~ ! [SY32: $i,SY33: $i] :
                              ( ( ( singleton @ SV5 )
                               != ( set_union2 @ SY32 @ SY33 ) )
                              | ( SY33
                                = ( singleton @ SV5 ) )
                              | ( SY32 = empty_set )
                              | ( SY33 = empty_set ) ) )
                  | ~ ~ ( ~ ! [SY34: $i,SY35: $i] :
                              ( ( ( singleton @ SV5 )
                               != ( set_union2 @ SY34 @ SY35 ) )
                              | ( SY34
                                = ( singleton @ SV5 ) )
                              | ( SY35
                                = ( singleton @ SV5 ) )
                              | ( SY35 = empty_set ) )
                        | ~ ! [SY36: $i,SY37: $i] :
                              ( ( ( singleton @ SV5 )
                               != ( set_union2 @ SY36 @ SY37 ) )
                              | ( SY37
                                = ( singleton @ SV5 ) )
                              | ( SY37
                                = ( singleton @ SV5 ) )
                              | ( SY37 = empty_set ) ) ) ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[41]) ).

thf(49,plain,
    ! [SV6: $i,SV1: $i] :
      ( ( ( set_union2 @ SV1 @ SV6 )
        = ( set_union2 @ SV6 @ SV1 ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[42]) ).

thf(50,plain,
    ! [SV2: $i] :
      ( ( ( empty @ SV2 )
        = $true )
      | ( ( ! [SY20: $i] :
              ~ ( empty @ ( set_union2 @ SV2 @ SY20 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[43]) ).

thf(51,plain,
    ! [SV3: $i] :
      ( ( ( empty @ SV3 )
        = $true )
      | ( ( ! [SY21: $i] :
              ~ ( empty @ ( set_union2 @ SY21 @ SV3 ) ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[44]) ).

thf(52,plain,
    ( ( ~ ( ( sK3_SY18 != empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[47]) ).

thf(53,plain,
    ( ( ~ ~ ( ~ ( ( sK2_SY16 != empty_set ) )
            | ~ ~ ( ~ ( ( sK2_SY16 != sK3_SY18 ) )
                  | ( ( singleton @ sK1_A )
                   != ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[47]) ).

thf(54,plain,
    ! [SV5: $i] :
      ( ( ~ ~ ( ~ ~ ( ~ ! [SY22: $i] :
                          ( ! [SY23: $i] :
                              ( ( singleton @ SV5 )
                             != ( set_union2 @ SY22 @ SY23 ) )
                          | ( SY22
                            = ( singleton @ SV5 ) )
                          | ( SY22 = empty_set )
                          | ( SY22
                            = ( singleton @ SV5 ) ) )
                    | ~ ! [SY24: $i] :
                          ( ! [SY25: $i] :
                              ( ( ( singleton @ SV5 )
                               != ( set_union2 @ SY24 @ SY25 ) )
                              | ( SY25
                                = ( singleton @ SV5 ) ) )
                          | ( SY24 = empty_set )
                          | ( SY24
                            = ( singleton @ SV5 ) ) ) )
              | ~ ~ ( ~ ! [SY26: $i] :
                          ( ! [SY27: $i] :
                              ( ( ( singleton @ SV5 )
                               != ( set_union2 @ SY26 @ SY27 ) )
                              | ( SY26
                                = ( singleton @ SV5 ) )
                              | ( SY27
                                = ( singleton @ SV5 ) ) )
                          | ( SY26
                            = ( singleton @ SV5 ) ) )
                    | ~ ! [SY28: $i] :
                          ( ! [SY29: $i] :
                              ( ( ( singleton @ SV5 )
                               != ( set_union2 @ SY28 @ SY29 ) )
                              | ( SY29
                                = ( singleton @ SV5 ) )
                              | ( SY29
                                = ( singleton @ SV5 ) ) )
                          | ( SY28
                            = ( singleton @ SV5 ) ) ) ) )
        | ~ ~ ( ~ ~ ( ~ ! [SY30: $i,SY31: $i] :
                          ( ( ( singleton @ SV5 )
                           != ( set_union2 @ SY30 @ SY31 ) )
                          | ( SY30
                            = ( singleton @ SV5 ) )
                          | ( SY30 = empty_set )
                          | ( SY31 = empty_set ) )
                    | ~ ! [SY32: $i,SY33: $i] :
                          ( ( ( singleton @ SV5 )
                           != ( set_union2 @ SY32 @ SY33 ) )
                          | ( SY33
                            = ( singleton @ SV5 ) )
                          | ( SY32 = empty_set )
                          | ( SY33 = empty_set ) ) )
              | ~ ~ ( ~ ! [SY34: $i,SY35: $i] :
                          ( ( ( singleton @ SV5 )
                           != ( set_union2 @ SY34 @ SY35 ) )
                          | ( SY34
                            = ( singleton @ SV5 ) )
                          | ( SY35
                            = ( singleton @ SV5 ) )
                          | ( SY35 = empty_set ) )
                    | ~ ! [SY36: $i,SY37: $i] :
                          ( ( ( singleton @ SV5 )
                           != ( set_union2 @ SY36 @ SY37 ) )
                          | ( SY37
                            = ( singleton @ SV5 ) )
                          | ( SY37
                            = ( singleton @ SV5 ) )
                          | ( SY37 = empty_set ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[48]) ).

thf(55,plain,
    ! [SV7: $i,SV2: $i] :
      ( ( ( ~ ( empty @ ( set_union2 @ SV2 @ SV7 ) ) )
        = $true )
      | ( ( empty @ SV2 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[50]) ).

thf(56,plain,
    ! [SV3: $i,SV8: $i] :
      ( ( ( ~ ( empty @ ( set_union2 @ SV8 @ SV3 ) ) )
        = $true )
      | ( ( empty @ SV3 )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[51]) ).

thf(57,plain,
    ( ( ( sK3_SY18 != empty_set ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[52]) ).

thf(58,plain,
    ( ( ~ ( ~ ( ( sK2_SY16 != empty_set ) )
          | ~ ~ ( ~ ( ( sK2_SY16 != sK3_SY18 ) )
                | ( ( singleton @ sK1_A )
                 != ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[53]) ).

thf(59,plain,
    ! [SV5: $i] :
      ( ( ~ ~ ( ~ ~ ( ~ ! [SY22: $i] :
                          ( ! [SY23: $i] :
                              ( ( singleton @ SV5 )
                             != ( set_union2 @ SY22 @ SY23 ) )
                          | ( SY22
                            = ( singleton @ SV5 ) )
                          | ( SY22 = empty_set )
                          | ( SY22
                            = ( singleton @ SV5 ) ) )
                    | ~ ! [SY24: $i] :
                          ( ! [SY25: $i] :
                              ( ( ( singleton @ SV5 )
                               != ( set_union2 @ SY24 @ SY25 ) )
                              | ( SY25
                                = ( singleton @ SV5 ) ) )
                          | ( SY24 = empty_set )
                          | ( SY24
                            = ( singleton @ SV5 ) ) ) )
              | ~ ~ ( ~ ! [SY26: $i] :
                          ( ! [SY27: $i] :
                              ( ( ( singleton @ SV5 )
                               != ( set_union2 @ SY26 @ SY27 ) )
                              | ( SY26
                                = ( singleton @ SV5 ) )
                              | ( SY27
                                = ( singleton @ SV5 ) ) )
                          | ( SY26
                            = ( singleton @ SV5 ) ) )
                    | ~ ! [SY28: $i] :
                          ( ! [SY29: $i] :
                              ( ( ( singleton @ SV5 )
                               != ( set_union2 @ SY28 @ SY29 ) )
                              | ( SY29
                                = ( singleton @ SV5 ) )
                              | ( SY29
                                = ( singleton @ SV5 ) ) )
                          | ( SY28
                            = ( singleton @ SV5 ) ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[54]) ).

thf(60,plain,
    ! [SV5: $i] :
      ( ( ~ ~ ( ~ ~ ( ~ ! [SY30: $i,SY31: $i] :
                          ( ( ( singleton @ SV5 )
                           != ( set_union2 @ SY30 @ SY31 ) )
                          | ( SY30
                            = ( singleton @ SV5 ) )
                          | ( SY30 = empty_set )
                          | ( SY31 = empty_set ) )
                    | ~ ! [SY32: $i,SY33: $i] :
                          ( ( ( singleton @ SV5 )
                           != ( set_union2 @ SY32 @ SY33 ) )
                          | ( SY33
                            = ( singleton @ SV5 ) )
                          | ( SY32 = empty_set )
                          | ( SY33 = empty_set ) ) )
              | ~ ~ ( ~ ! [SY34: $i,SY35: $i] :
                          ( ( ( singleton @ SV5 )
                           != ( set_union2 @ SY34 @ SY35 ) )
                          | ( SY34
                            = ( singleton @ SV5 ) )
                          | ( SY35
                            = ( singleton @ SV5 ) )
                          | ( SY35 = empty_set ) )
                    | ~ ! [SY36: $i,SY37: $i] :
                          ( ( ( singleton @ SV5 )
                           != ( set_union2 @ SY36 @ SY37 ) )
                          | ( SY37
                            = ( singleton @ SV5 ) )
                          | ( SY37
                            = ( singleton @ SV5 ) )
                          | ( SY37 = empty_set ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[54]) ).

thf(61,plain,
    ! [SV7: $i,SV2: $i] :
      ( ( ( empty @ ( set_union2 @ SV2 @ SV7 ) )
        = $false )
      | ( ( empty @ SV2 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[55]) ).

thf(62,plain,
    ! [SV3: $i,SV8: $i] :
      ( ( ( empty @ ( set_union2 @ SV8 @ SV3 ) )
        = $false )
      | ( ( empty @ SV3 )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[56]) ).

thf(63,plain,
    ( ( sK3_SY18 = empty_set )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[57]) ).

thf(64,plain,
    ( ( ~ ( ( sK2_SY16 != empty_set ) )
      | ~ ~ ( ~ ( ( sK2_SY16 != sK3_SY18 ) )
            | ( ( singleton @ sK1_A )
             != ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[58]) ).

thf(65,plain,
    ! [SV5: $i] :
      ( ( ~ ( ~ ~ ( ~ ! [SY22: $i] :
                        ( ! [SY23: $i] :
                            ( ( singleton @ SV5 )
                           != ( set_union2 @ SY22 @ SY23 ) )
                        | ( SY22
                          = ( singleton @ SV5 ) )
                        | ( SY22 = empty_set )
                        | ( SY22
                          = ( singleton @ SV5 ) ) )
                  | ~ ! [SY24: $i] :
                        ( ! [SY25: $i] :
                            ( ( ( singleton @ SV5 )
                             != ( set_union2 @ SY24 @ SY25 ) )
                            | ( SY25
                              = ( singleton @ SV5 ) ) )
                        | ( SY24 = empty_set )
                        | ( SY24
                          = ( singleton @ SV5 ) ) ) )
            | ~ ~ ( ~ ! [SY26: $i] :
                        ( ! [SY27: $i] :
                            ( ( ( singleton @ SV5 )
                             != ( set_union2 @ SY26 @ SY27 ) )
                            | ( SY26
                              = ( singleton @ SV5 ) )
                            | ( SY27
                              = ( singleton @ SV5 ) ) )
                        | ( SY26
                          = ( singleton @ SV5 ) ) )
                  | ~ ! [SY28: $i] :
                        ( ! [SY29: $i] :
                            ( ( ( singleton @ SV5 )
                             != ( set_union2 @ SY28 @ SY29 ) )
                            | ( SY29
                              = ( singleton @ SV5 ) )
                            | ( SY29
                              = ( singleton @ SV5 ) ) )
                        | ( SY28
                          = ( singleton @ SV5 ) ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[59]) ).

thf(66,plain,
    ! [SV5: $i] :
      ( ( ~ ( ~ ~ ( ~ ! [SY30: $i,SY31: $i] :
                        ( ( ( singleton @ SV5 )
                         != ( set_union2 @ SY30 @ SY31 ) )
                        | ( SY30
                          = ( singleton @ SV5 ) )
                        | ( SY30 = empty_set )
                        | ( SY31 = empty_set ) )
                  | ~ ! [SY32: $i,SY33: $i] :
                        ( ( ( singleton @ SV5 )
                         != ( set_union2 @ SY32 @ SY33 ) )
                        | ( SY33
                          = ( singleton @ SV5 ) )
                        | ( SY32 = empty_set )
                        | ( SY33 = empty_set ) ) )
            | ~ ~ ( ~ ! [SY34: $i,SY35: $i] :
                        ( ( ( singleton @ SV5 )
                         != ( set_union2 @ SY34 @ SY35 ) )
                        | ( SY34
                          = ( singleton @ SV5 ) )
                        | ( SY35
                          = ( singleton @ SV5 ) )
                        | ( SY35 = empty_set ) )
                  | ~ ! [SY36: $i,SY37: $i] :
                        ( ( ( singleton @ SV5 )
                         != ( set_union2 @ SY36 @ SY37 ) )
                        | ( SY37
                          = ( singleton @ SV5 ) )
                        | ( SY37
                          = ( singleton @ SV5 ) )
                        | ( SY37 = empty_set ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[60]) ).

thf(67,plain,
    ( ( ~ ( ( sK2_SY16 != empty_set ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[64]) ).

thf(68,plain,
    ( ( ~ ~ ( ~ ( ( sK2_SY16 != sK3_SY18 ) )
            | ( ( singleton @ sK1_A )
             != ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[64]) ).

thf(69,plain,
    ! [SV5: $i] :
      ( ( ~ ~ ( ~ ! [SY22: $i] :
                    ( ! [SY23: $i] :
                        ( ( singleton @ SV5 )
                       != ( set_union2 @ SY22 @ SY23 ) )
                    | ( SY22
                      = ( singleton @ SV5 ) )
                    | ( SY22 = empty_set )
                    | ( SY22
                      = ( singleton @ SV5 ) ) )
              | ~ ! [SY24: $i] :
                    ( ! [SY25: $i] :
                        ( ( ( singleton @ SV5 )
                         != ( set_union2 @ SY24 @ SY25 ) )
                        | ( SY25
                          = ( singleton @ SV5 ) ) )
                    | ( SY24 = empty_set )
                    | ( SY24
                      = ( singleton @ SV5 ) ) ) )
        | ~ ~ ( ~ ! [SY26: $i] :
                    ( ! [SY27: $i] :
                        ( ( ( singleton @ SV5 )
                         != ( set_union2 @ SY26 @ SY27 ) )
                        | ( SY26
                          = ( singleton @ SV5 ) )
                        | ( SY27
                          = ( singleton @ SV5 ) ) )
                    | ( SY26
                      = ( singleton @ SV5 ) ) )
              | ~ ! [SY28: $i] :
                    ( ! [SY29: $i] :
                        ( ( ( singleton @ SV5 )
                         != ( set_union2 @ SY28 @ SY29 ) )
                        | ( SY29
                          = ( singleton @ SV5 ) )
                        | ( SY29
                          = ( singleton @ SV5 ) ) )
                    | ( SY28
                      = ( singleton @ SV5 ) ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[65]) ).

thf(70,plain,
    ! [SV5: $i] :
      ( ( ~ ~ ( ~ ! [SY30: $i,SY31: $i] :
                    ( ( ( singleton @ SV5 )
                     != ( set_union2 @ SY30 @ SY31 ) )
                    | ( SY30
                      = ( singleton @ SV5 ) )
                    | ( SY30 = empty_set )
                    | ( SY31 = empty_set ) )
              | ~ ! [SY32: $i,SY33: $i] :
                    ( ( ( singleton @ SV5 )
                     != ( set_union2 @ SY32 @ SY33 ) )
                    | ( SY33
                      = ( singleton @ SV5 ) )
                    | ( SY32 = empty_set )
                    | ( SY33 = empty_set ) ) )
        | ~ ~ ( ~ ! [SY34: $i,SY35: $i] :
                    ( ( ( singleton @ SV5 )
                     != ( set_union2 @ SY34 @ SY35 ) )
                    | ( SY34
                      = ( singleton @ SV5 ) )
                    | ( SY35
                      = ( singleton @ SV5 ) )
                    | ( SY35 = empty_set ) )
              | ~ ! [SY36: $i,SY37: $i] :
                    ( ( ( singleton @ SV5 )
                     != ( set_union2 @ SY36 @ SY37 ) )
                    | ( SY37
                      = ( singleton @ SV5 ) )
                    | ( SY37
                      = ( singleton @ SV5 ) )
                    | ( SY37 = empty_set ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[66]) ).

thf(71,plain,
    ( ( ( sK2_SY16 != empty_set ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[67]) ).

thf(72,plain,
    ( ( ~ ( ~ ( ( sK2_SY16 != sK3_SY18 ) )
          | ( ( singleton @ sK1_A )
           != ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[68]) ).

thf(73,plain,
    ! [SV5: $i] :
      ( ( ~ ~ ( ~ ! [SY22: $i] :
                    ( ! [SY23: $i] :
                        ( ( singleton @ SV5 )
                       != ( set_union2 @ SY22 @ SY23 ) )
                    | ( SY22
                      = ( singleton @ SV5 ) )
                    | ( SY22 = empty_set )
                    | ( SY22
                      = ( singleton @ SV5 ) ) )
              | ~ ! [SY24: $i] :
                    ( ! [SY25: $i] :
                        ( ( ( singleton @ SV5 )
                         != ( set_union2 @ SY24 @ SY25 ) )
                        | ( SY25
                          = ( singleton @ SV5 ) ) )
                    | ( SY24 = empty_set )
                    | ( SY24
                      = ( singleton @ SV5 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[69]) ).

thf(74,plain,
    ! [SV5: $i] :
      ( ( ~ ~ ( ~ ! [SY26: $i] :
                    ( ! [SY27: $i] :
                        ( ( ( singleton @ SV5 )
                         != ( set_union2 @ SY26 @ SY27 ) )
                        | ( SY26
                          = ( singleton @ SV5 ) )
                        | ( SY27
                          = ( singleton @ SV5 ) ) )
                    | ( SY26
                      = ( singleton @ SV5 ) ) )
              | ~ ! [SY28: $i] :
                    ( ! [SY29: $i] :
                        ( ( ( singleton @ SV5 )
                         != ( set_union2 @ SY28 @ SY29 ) )
                        | ( SY29
                          = ( singleton @ SV5 ) )
                        | ( SY29
                          = ( singleton @ SV5 ) ) )
                    | ( SY28
                      = ( singleton @ SV5 ) ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[69]) ).

thf(75,plain,
    ! [SV5: $i] :
      ( ( ~ ~ ( ~ ! [SY30: $i,SY31: $i] :
                    ( ( ( singleton @ SV5 )
                     != ( set_union2 @ SY30 @ SY31 ) )
                    | ( SY30
                      = ( singleton @ SV5 ) )
                    | ( SY30 = empty_set )
                    | ( SY31 = empty_set ) )
              | ~ ! [SY32: $i,SY33: $i] :
                    ( ( ( singleton @ SV5 )
                     != ( set_union2 @ SY32 @ SY33 ) )
                    | ( SY33
                      = ( singleton @ SV5 ) )
                    | ( SY32 = empty_set )
                    | ( SY33 = empty_set ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[70]) ).

thf(76,plain,
    ! [SV5: $i] :
      ( ( ~ ~ ( ~ ! [SY34: $i,SY35: $i] :
                    ( ( ( singleton @ SV5 )
                     != ( set_union2 @ SY34 @ SY35 ) )
                    | ( SY34
                      = ( singleton @ SV5 ) )
                    | ( SY35
                      = ( singleton @ SV5 ) )
                    | ( SY35 = empty_set ) )
              | ~ ! [SY36: $i,SY37: $i] :
                    ( ( ( singleton @ SV5 )
                     != ( set_union2 @ SY36 @ SY37 ) )
                    | ( SY37
                      = ( singleton @ SV5 ) )
                    | ( SY37
                      = ( singleton @ SV5 ) )
                    | ( SY37 = empty_set ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[70]) ).

thf(77,plain,
    ( ( sK2_SY16 = empty_set )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[71]) ).

thf(78,plain,
    ( ( ~ ( ( sK2_SY16 != sK3_SY18 ) )
      | ( ( singleton @ sK1_A )
       != ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[72]) ).

thf(79,plain,
    ! [SV5: $i] :
      ( ( ~ ( ~ ! [SY22: $i] :
                  ( ! [SY23: $i] :
                      ( ( singleton @ SV5 )
                     != ( set_union2 @ SY22 @ SY23 ) )
                  | ( SY22
                    = ( singleton @ SV5 ) )
                  | ( SY22 = empty_set )
                  | ( SY22
                    = ( singleton @ SV5 ) ) )
            | ~ ! [SY24: $i] :
                  ( ! [SY25: $i] :
                      ( ( ( singleton @ SV5 )
                       != ( set_union2 @ SY24 @ SY25 ) )
                      | ( SY25
                        = ( singleton @ SV5 ) ) )
                  | ( SY24 = empty_set )
                  | ( SY24
                    = ( singleton @ SV5 ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[73]) ).

thf(80,plain,
    ! [SV5: $i] :
      ( ( ~ ( ~ ! [SY26: $i] :
                  ( ! [SY27: $i] :
                      ( ( ( singleton @ SV5 )
                       != ( set_union2 @ SY26 @ SY27 ) )
                      | ( SY26
                        = ( singleton @ SV5 ) )
                      | ( SY27
                        = ( singleton @ SV5 ) ) )
                  | ( SY26
                    = ( singleton @ SV5 ) ) )
            | ~ ! [SY28: $i] :
                  ( ! [SY29: $i] :
                      ( ( ( singleton @ SV5 )
                       != ( set_union2 @ SY28 @ SY29 ) )
                      | ( SY29
                        = ( singleton @ SV5 ) )
                      | ( SY29
                        = ( singleton @ SV5 ) ) )
                  | ( SY28
                    = ( singleton @ SV5 ) ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[74]) ).

thf(81,plain,
    ! [SV5: $i] :
      ( ( ~ ( ~ ! [SY30: $i,SY31: $i] :
                  ( ( ( singleton @ SV5 )
                   != ( set_union2 @ SY30 @ SY31 ) )
                  | ( SY30
                    = ( singleton @ SV5 ) )
                  | ( SY30 = empty_set )
                  | ( SY31 = empty_set ) )
            | ~ ! [SY32: $i,SY33: $i] :
                  ( ( ( singleton @ SV5 )
                   != ( set_union2 @ SY32 @ SY33 ) )
                  | ( SY33
                    = ( singleton @ SV5 ) )
                  | ( SY32 = empty_set )
                  | ( SY33 = empty_set ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[75]) ).

thf(82,plain,
    ! [SV5: $i] :
      ( ( ~ ( ~ ! [SY34: $i,SY35: $i] :
                  ( ( ( singleton @ SV5 )
                   != ( set_union2 @ SY34 @ SY35 ) )
                  | ( SY34
                    = ( singleton @ SV5 ) )
                  | ( SY35
                    = ( singleton @ SV5 ) )
                  | ( SY35 = empty_set ) )
            | ~ ! [SY36: $i,SY37: $i] :
                  ( ( ( singleton @ SV5 )
                   != ( set_union2 @ SY36 @ SY37 ) )
                  | ( SY37
                    = ( singleton @ SV5 ) )
                  | ( SY37
                    = ( singleton @ SV5 ) )
                  | ( SY37 = empty_set ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[76]) ).

thf(83,plain,
    ( ( ~ ( ( sK2_SY16 != sK3_SY18 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[78]) ).

thf(84,plain,
    ( ( ( ( singleton @ sK1_A )
       != ( set_union2 @ sK2_SY16 @ sK3_SY18 ) ) )
    = $false ),
    inference(extcnf_or_neg,[status(thm)],[78]) ).

thf(85,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY22: $i] :
              ( ! [SY23: $i] :
                  ( ( singleton @ SV5 )
                 != ( set_union2 @ SY22 @ SY23 ) )
              | ( SY22
                = ( singleton @ SV5 ) )
              | ( SY22 = empty_set )
              | ( SY22
                = ( singleton @ SV5 ) ) )
        | ~ ! [SY24: $i] :
              ( ! [SY25: $i] :
                  ( ( ( singleton @ SV5 )
                   != ( set_union2 @ SY24 @ SY25 ) )
                  | ( SY25
                    = ( singleton @ SV5 ) ) )
              | ( SY24 = empty_set )
              | ( SY24
                = ( singleton @ SV5 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[79]) ).

thf(86,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY26: $i] :
              ( ! [SY27: $i] :
                  ( ( ( singleton @ SV5 )
                   != ( set_union2 @ SY26 @ SY27 ) )
                  | ( SY26
                    = ( singleton @ SV5 ) )
                  | ( SY27
                    = ( singleton @ SV5 ) ) )
              | ( SY26
                = ( singleton @ SV5 ) ) )
        | ~ ! [SY28: $i] :
              ( ! [SY29: $i] :
                  ( ( ( singleton @ SV5 )
                   != ( set_union2 @ SY28 @ SY29 ) )
                  | ( SY29
                    = ( singleton @ SV5 ) )
                  | ( SY29
                    = ( singleton @ SV5 ) ) )
              | ( SY28
                = ( singleton @ SV5 ) ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[80]) ).

thf(87,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY30: $i,SY31: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SY30 @ SY31 ) )
              | ( SY30
                = ( singleton @ SV5 ) )
              | ( SY30 = empty_set )
              | ( SY31 = empty_set ) )
        | ~ ! [SY32: $i,SY33: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SY32 @ SY33 ) )
              | ( SY33
                = ( singleton @ SV5 ) )
              | ( SY32 = empty_set )
              | ( SY33 = empty_set ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[81]) ).

thf(88,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY34: $i,SY35: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SY34 @ SY35 ) )
              | ( SY34
                = ( singleton @ SV5 ) )
              | ( SY35
                = ( singleton @ SV5 ) )
              | ( SY35 = empty_set ) )
        | ~ ! [SY36: $i,SY37: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SY36 @ SY37 ) )
              | ( SY37
                = ( singleton @ SV5 ) )
              | ( SY37
                = ( singleton @ SV5 ) )
              | ( SY37 = empty_set ) ) )
      = $false ),
    inference(extcnf_not_pos,[status(thm)],[82]) ).

thf(89,plain,
    ( ( ( sK2_SY16 != sK3_SY18 ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[83]) ).

thf(90,plain,
    ( ( ( singleton @ sK1_A )
      = ( set_union2 @ sK2_SY16 @ sK3_SY18 ) )
    = $true ),
    inference(extcnf_not_neg,[status(thm)],[84]) ).

thf(91,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY22: $i] :
              ( ! [SY23: $i] :
                  ( ( singleton @ SV5 )
                 != ( set_union2 @ SY22 @ SY23 ) )
              | ( SY22
                = ( singleton @ SV5 ) )
              | ( SY22 = empty_set )
              | ( SY22
                = ( singleton @ SV5 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[85]) ).

thf(92,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY24: $i] :
              ( ! [SY25: $i] :
                  ( ( ( singleton @ SV5 )
                   != ( set_union2 @ SY24 @ SY25 ) )
                  | ( SY25
                    = ( singleton @ SV5 ) ) )
              | ( SY24 = empty_set )
              | ( SY24
                = ( singleton @ SV5 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[85]) ).

thf(93,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY26: $i] :
              ( ! [SY27: $i] :
                  ( ( ( singleton @ SV5 )
                   != ( set_union2 @ SY26 @ SY27 ) )
                  | ( SY26
                    = ( singleton @ SV5 ) )
                  | ( SY27
                    = ( singleton @ SV5 ) ) )
              | ( SY26
                = ( singleton @ SV5 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[86]) ).

thf(94,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY28: $i] :
              ( ! [SY29: $i] :
                  ( ( ( singleton @ SV5 )
                   != ( set_union2 @ SY28 @ SY29 ) )
                  | ( SY29
                    = ( singleton @ SV5 ) )
                  | ( SY29
                    = ( singleton @ SV5 ) ) )
              | ( SY28
                = ( singleton @ SV5 ) ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[86]) ).

thf(95,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY30: $i,SY31: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SY30 @ SY31 ) )
              | ( SY30
                = ( singleton @ SV5 ) )
              | ( SY30 = empty_set )
              | ( SY31 = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[87]) ).

thf(96,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY32: $i,SY33: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SY32 @ SY33 ) )
              | ( SY33
                = ( singleton @ SV5 ) )
              | ( SY32 = empty_set )
              | ( SY33 = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[87]) ).

thf(97,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY34: $i,SY35: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SY34 @ SY35 ) )
              | ( SY34
                = ( singleton @ SV5 ) )
              | ( SY35
                = ( singleton @ SV5 ) )
              | ( SY35 = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[88]) ).

thf(98,plain,
    ! [SV5: $i] :
      ( ( ~ ! [SY36: $i,SY37: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SY36 @ SY37 ) )
              | ( SY37
                = ( singleton @ SV5 ) )
              | ( SY37
                = ( singleton @ SV5 ) )
              | ( SY37 = empty_set ) ) )
      = $false ),
    inference(extcnf_or_neg,[status(thm)],[88]) ).

thf(99,plain,
    ( ( sK2_SY16 = sK3_SY18 )
    = $false ),
    inference(extcnf_not_pos,[status(thm)],[89]) ).

thf(100,plain,
    ! [SV5: $i] :
      ( ( ! [SY22: $i] :
            ( ! [SY23: $i] :
                ( ( singleton @ SV5 )
               != ( set_union2 @ SY22 @ SY23 ) )
            | ( SY22
              = ( singleton @ SV5 ) )
            | ( SY22 = empty_set )
            | ( SY22
              = ( singleton @ SV5 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[91]) ).

thf(101,plain,
    ! [SV5: $i] :
      ( ( ! [SY24: $i] :
            ( ! [SY25: $i] :
                ( ( ( singleton @ SV5 )
                 != ( set_union2 @ SY24 @ SY25 ) )
                | ( SY25
                  = ( singleton @ SV5 ) ) )
            | ( SY24 = empty_set )
            | ( SY24
              = ( singleton @ SV5 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[92]) ).

thf(102,plain,
    ! [SV5: $i] :
      ( ( ! [SY26: $i] :
            ( ! [SY27: $i] :
                ( ( ( singleton @ SV5 )
                 != ( set_union2 @ SY26 @ SY27 ) )
                | ( SY26
                  = ( singleton @ SV5 ) )
                | ( SY27
                  = ( singleton @ SV5 ) ) )
            | ( SY26
              = ( singleton @ SV5 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[93]) ).

thf(103,plain,
    ! [SV5: $i] :
      ( ( ! [SY28: $i] :
            ( ! [SY29: $i] :
                ( ( ( singleton @ SV5 )
                 != ( set_union2 @ SY28 @ SY29 ) )
                | ( SY29
                  = ( singleton @ SV5 ) )
                | ( SY29
                  = ( singleton @ SV5 ) ) )
            | ( SY28
              = ( singleton @ SV5 ) ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[94]) ).

thf(104,plain,
    ! [SV5: $i] :
      ( ( ! [SY30: $i,SY31: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SY30 @ SY31 ) )
            | ( SY30
              = ( singleton @ SV5 ) )
            | ( SY30 = empty_set )
            | ( SY31 = empty_set ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[95]) ).

thf(105,plain,
    ! [SV5: $i] :
      ( ( ! [SY32: $i,SY33: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SY32 @ SY33 ) )
            | ( SY33
              = ( singleton @ SV5 ) )
            | ( SY32 = empty_set )
            | ( SY33 = empty_set ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[96]) ).

thf(106,plain,
    ! [SV5: $i] :
      ( ( ! [SY34: $i,SY35: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SY34 @ SY35 ) )
            | ( SY34
              = ( singleton @ SV5 ) )
            | ( SY35
              = ( singleton @ SV5 ) )
            | ( SY35 = empty_set ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[97]) ).

thf(107,plain,
    ! [SV5: $i] :
      ( ( ! [SY36: $i,SY37: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SY36 @ SY37 ) )
            | ( SY37
              = ( singleton @ SV5 ) )
            | ( SY37
              = ( singleton @ SV5 ) )
            | ( SY37 = empty_set ) ) )
      = $true ),
    inference(extcnf_not_neg,[status(thm)],[98]) ).

thf(108,plain,
    ! [SV9: $i,SV5: $i] :
      ( ( ! [SY38: $i] :
            ( ( singleton @ SV5 )
           != ( set_union2 @ SV9 @ SY38 ) )
        | ( SV9
          = ( singleton @ SV5 ) )
        | ( SV9 = empty_set )
        | ( SV9
          = ( singleton @ SV5 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[100]) ).

thf(109,plain,
    ! [SV10: $i,SV5: $i] :
      ( ( ! [SY39: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SV10 @ SY39 ) )
            | ( SY39
              = ( singleton @ SV5 ) ) )
        | ( SV10 = empty_set )
        | ( SV10
          = ( singleton @ SV5 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[101]) ).

thf(110,plain,
    ! [SV11: $i,SV5: $i] :
      ( ( ! [SY40: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SV11 @ SY40 ) )
            | ( SV11
              = ( singleton @ SV5 ) )
            | ( SY40
              = ( singleton @ SV5 ) ) )
        | ( SV11
          = ( singleton @ SV5 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[102]) ).

thf(111,plain,
    ! [SV12: $i,SV5: $i] :
      ( ( ! [SY41: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SV12 @ SY41 ) )
            | ( SY41
              = ( singleton @ SV5 ) )
            | ( SY41
              = ( singleton @ SV5 ) ) )
        | ( SV12
          = ( singleton @ SV5 ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[103]) ).

thf(112,plain,
    ! [SV13: $i,SV5: $i] :
      ( ( ! [SY42: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SV13 @ SY42 ) )
            | ( SV13
              = ( singleton @ SV5 ) )
            | ( SV13 = empty_set )
            | ( SY42 = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[104]) ).

thf(113,plain,
    ! [SV14: $i,SV5: $i] :
      ( ( ! [SY43: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SV14 @ SY43 ) )
            | ( SY43
              = ( singleton @ SV5 ) )
            | ( SV14 = empty_set )
            | ( SY43 = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[105]) ).

thf(114,plain,
    ! [SV15: $i,SV5: $i] :
      ( ( ! [SY44: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SV15 @ SY44 ) )
            | ( SV15
              = ( singleton @ SV5 ) )
            | ( SY44
              = ( singleton @ SV5 ) )
            | ( SY44 = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[106]) ).

thf(115,plain,
    ! [SV16: $i,SV5: $i] :
      ( ( ! [SY45: $i] :
            ( ( ( singleton @ SV5 )
             != ( set_union2 @ SV16 @ SY45 ) )
            | ( SY45
              = ( singleton @ SV5 ) )
            | ( SY45
              = ( singleton @ SV5 ) )
            | ( SY45 = empty_set ) ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[107]) ).

thf(116,plain,
    ! [SV9: $i,SV5: $i] :
      ( ( ( ! [SY38: $i] :
              ( ( singleton @ SV5 )
             != ( set_union2 @ SV9 @ SY38 ) )
          | ( SV9
            = ( singleton @ SV5 ) )
          | ( SV9 = empty_set ) )
        = $true )
      | ( ( SV9
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[108]) ).

thf(117,plain,
    ! [SV10: $i,SV5: $i] :
      ( ( ( ! [SY39: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SV10 @ SY39 ) )
              | ( SY39
                = ( singleton @ SV5 ) ) )
          | ( SV10 = empty_set ) )
        = $true )
      | ( ( SV10
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[109]) ).

thf(118,plain,
    ! [SV11: $i,SV5: $i] :
      ( ( ( ! [SY40: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SV11 @ SY40 ) )
              | ( SV11
                = ( singleton @ SV5 ) )
              | ( SY40
                = ( singleton @ SV5 ) ) ) )
        = $true )
      | ( ( SV11
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[110]) ).

thf(119,plain,
    ! [SV12: $i,SV5: $i] :
      ( ( ( ! [SY41: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SV12 @ SY41 ) )
              | ( SY41
                = ( singleton @ SV5 ) )
              | ( SY41
                = ( singleton @ SV5 ) ) ) )
        = $true )
      | ( ( SV12
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[111]) ).

thf(120,plain,
    ! [SV17: $i,SV13: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
         != ( set_union2 @ SV13 @ SV17 ) )
        | ( SV13
          = ( singleton @ SV5 ) )
        | ( SV13 = empty_set )
        | ( SV17 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[112]) ).

thf(121,plain,
    ! [SV18: $i,SV14: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
         != ( set_union2 @ SV14 @ SV18 ) )
        | ( SV18
          = ( singleton @ SV5 ) )
        | ( SV14 = empty_set )
        | ( SV18 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[113]) ).

thf(122,plain,
    ! [SV19: $i,SV15: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
         != ( set_union2 @ SV15 @ SV19 ) )
        | ( SV15
          = ( singleton @ SV5 ) )
        | ( SV19
          = ( singleton @ SV5 ) )
        | ( SV19 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[114]) ).

thf(123,plain,
    ! [SV20: $i,SV16: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
         != ( set_union2 @ SV16 @ SV20 ) )
        | ( SV20
          = ( singleton @ SV5 ) )
        | ( SV20
          = ( singleton @ SV5 ) )
        | ( SV20 = empty_set ) )
      = $true ),
    inference(extcnf_forall_pos,[status(thm)],[115]) ).

thf(124,plain,
    ! [SV9: $i,SV5: $i] :
      ( ( ( ! [SY38: $i] :
              ( ( singleton @ SV5 )
             != ( set_union2 @ SV9 @ SY38 ) )
          | ( SV9
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV9 = empty_set )
        = $true )
      | ( ( SV9
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[116]) ).

thf(125,plain,
    ! [SV10: $i,SV5: $i] :
      ( ( ( ! [SY39: $i] :
              ( ( ( singleton @ SV5 )
               != ( set_union2 @ SV10 @ SY39 ) )
              | ( SY39
                = ( singleton @ SV5 ) ) ) )
        = $true )
      | ( ( SV10 = empty_set )
        = $true )
      | ( ( SV10
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[117]) ).

thf(126,plain,
    ! [SV21: $i,SV11: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV11 @ SV21 ) )
          | ( SV11
            = ( singleton @ SV5 ) )
          | ( SV21
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV11
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[118]) ).

thf(127,plain,
    ! [SV22: $i,SV12: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV12 @ SV22 ) )
          | ( SV22
            = ( singleton @ SV5 ) )
          | ( SV22
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV12
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[119]) ).

thf(128,plain,
    ! [SV17: $i,SV13: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV13 @ SV17 ) )
          | ( SV13
            = ( singleton @ SV5 ) )
          | ( SV13 = empty_set ) )
        = $true )
      | ( ( SV17 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[120]) ).

thf(129,plain,
    ! [SV18: $i,SV14: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV14 @ SV18 ) )
          | ( SV18
            = ( singleton @ SV5 ) )
          | ( SV14 = empty_set ) )
        = $true )
      | ( ( SV18 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[121]) ).

thf(130,plain,
    ! [SV19: $i,SV15: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV15 @ SV19 ) )
          | ( SV15
            = ( singleton @ SV5 ) )
          | ( SV19
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV19 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[122]) ).

thf(131,plain,
    ! [SV20: $i,SV16: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV16 @ SV20 ) )
          | ( SV20
            = ( singleton @ SV5 ) )
          | ( SV20
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV20 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[123]) ).

thf(132,plain,
    ! [SV9: $i,SV5: $i] :
      ( ( ( ! [SY38: $i] :
              ( ( singleton @ SV5 )
             != ( set_union2 @ SV9 @ SY38 ) ) )
        = $true )
      | ( ( SV9
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV9 = empty_set )
        = $true )
      | ( ( SV9
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[124]) ).

thf(133,plain,
    ! [SV23: $i,SV10: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV10 @ SV23 ) )
          | ( SV23
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV10 = empty_set )
        = $true )
      | ( ( SV10
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[125]) ).

thf(134,plain,
    ! [SV21: $i,SV11: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV11 @ SV21 ) )
          | ( SV11
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV21
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV11
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[126]) ).

thf(135,plain,
    ! [SV22: $i,SV12: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV12 @ SV22 ) )
          | ( SV22
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV22
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV12
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[127]) ).

thf(136,plain,
    ! [SV17: $i,SV13: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV13 @ SV17 ) )
          | ( SV13
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV13 = empty_set )
        = $true )
      | ( ( SV17 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[128]) ).

thf(137,plain,
    ! [SV18: $i,SV14: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV14 @ SV18 ) )
          | ( SV18
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV14 = empty_set )
        = $true )
      | ( ( SV18 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[129]) ).

thf(138,plain,
    ! [SV19: $i,SV15: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV15 @ SV19 ) )
          | ( SV15
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV19
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV19 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[130]) ).

thf(139,plain,
    ! [SV20: $i,SV16: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV16 @ SV20 ) )
          | ( SV20
            = ( singleton @ SV5 ) ) )
        = $true )
      | ( ( SV20
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV20 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[131]) ).

thf(140,plain,
    ! [SV24: $i,SV9: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV9 @ SV24 ) ) )
        = $true )
      | ( ( SV9
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV9 = empty_set )
        = $true )
      | ( ( SV9
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_forall_pos,[status(thm)],[132]) ).

thf(141,plain,
    ! [SV23: $i,SV10: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV10 @ SV23 ) ) )
        = $true )
      | ( ( SV23
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV10 = empty_set )
        = $true )
      | ( ( SV10
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[133]) ).

thf(142,plain,
    ! [SV21: $i,SV11: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV11 @ SV21 ) ) )
        = $true )
      | ( ( SV11
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV21
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV11
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[134]) ).

thf(143,plain,
    ! [SV22: $i,SV12: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV12 @ SV22 ) ) )
        = $true )
      | ( ( SV22
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV22
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV12
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[135]) ).

thf(144,plain,
    ! [SV17: $i,SV13: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV13 @ SV17 ) ) )
        = $true )
      | ( ( SV13
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV13 = empty_set )
        = $true )
      | ( ( SV17 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[136]) ).

thf(145,plain,
    ! [SV18: $i,SV14: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV14 @ SV18 ) ) )
        = $true )
      | ( ( SV18
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV14 = empty_set )
        = $true )
      | ( ( SV18 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[137]) ).

thf(146,plain,
    ! [SV19: $i,SV15: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV15 @ SV19 ) ) )
        = $true )
      | ( ( SV15
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV19
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV19 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[138]) ).

thf(147,plain,
    ! [SV20: $i,SV16: $i,SV5: $i] :
      ( ( ( ( ( singleton @ SV5 )
           != ( set_union2 @ SV16 @ SV20 ) ) )
        = $true )
      | ( ( SV20
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV20
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV20 = empty_set )
        = $true ) ),
    inference(extcnf_or_pos,[status(thm)],[139]) ).

thf(148,plain,
    ! [SV24: $i,SV9: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
          = ( set_union2 @ SV9 @ SV24 ) )
        = $false )
      | ( ( SV9
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV9 = empty_set )
        = $true )
      | ( ( SV9
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[140]) ).

thf(149,plain,
    ! [SV23: $i,SV10: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
          = ( set_union2 @ SV10 @ SV23 ) )
        = $false )
      | ( ( SV23
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV10 = empty_set )
        = $true )
      | ( ( SV10
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[141]) ).

thf(150,plain,
    ! [SV21: $i,SV11: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
          = ( set_union2 @ SV11 @ SV21 ) )
        = $false )
      | ( ( SV11
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV21
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV11
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[142]) ).

thf(151,plain,
    ! [SV22: $i,SV12: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
          = ( set_union2 @ SV12 @ SV22 ) )
        = $false )
      | ( ( SV22
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV22
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV12
          = ( singleton @ SV5 ) )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[143]) ).

thf(152,plain,
    ! [SV17: $i,SV13: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
          = ( set_union2 @ SV13 @ SV17 ) )
        = $false )
      | ( ( SV13
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV13 = empty_set )
        = $true )
      | ( ( SV17 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[144]) ).

thf(153,plain,
    ! [SV18: $i,SV14: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
          = ( set_union2 @ SV14 @ SV18 ) )
        = $false )
      | ( ( SV18
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV14 = empty_set )
        = $true )
      | ( ( SV18 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[145]) ).

thf(154,plain,
    ! [SV19: $i,SV15: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
          = ( set_union2 @ SV15 @ SV19 ) )
        = $false )
      | ( ( SV15
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV19
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV19 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[146]) ).

thf(155,plain,
    ! [SV20: $i,SV16: $i,SV5: $i] :
      ( ( ( ( singleton @ SV5 )
          = ( set_union2 @ SV16 @ SV20 ) )
        = $false )
      | ( ( SV20
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV20
          = ( singleton @ SV5 ) )
        = $true )
      | ( ( SV20 = empty_set )
        = $true ) ),
    inference(extcnf_not_pos,[status(thm)],[147]) ).

thf(156,plain,
    $false = $true,
    inference(fo_atp_e,[status(thm)],[32,155,154,153,152,151,150,149,148,99,90,77,63,62,61,49,46,45,36]) ).

thf(157,plain,
    $false,
    inference(solved_all_splits,[solved_all_splits(join,[])],[156]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.11/0.12  % Problem  : SET903+1 : TPTP v8.1.0. Released v3.2.0.
% 0.11/0.13  % Command  : leo --timeout %d --proofoutput 1 --foatp e --atp e=./eprover %s
% 0.12/0.34  % Computer : n017.cluster.edu
% 0.12/0.34  % Model    : x86_64 x86_64
% 0.12/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.34  % Memory   : 8042.1875MB
% 0.12/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.34  % CPULimit : 300
% 0.12/0.34  % WCLimit  : 600
% 0.12/0.34  % DateTime : Sat Jul  9 17:04:02 EDT 2022
% 0.12/0.34  % CPUTime  : 
% 0.12/0.35  
% 0.12/0.35   No.of.Axioms: 8
% 0.12/0.35  
% 0.12/0.35   Length.of.Defs: 0
% 0.12/0.35  
% 0.12/0.35   Contains.Choice.Funs: false
% 0.12/0.35  (rf:0,axioms:8,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:600,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:10,loop_count:0,foatp_calls:0,translation:fof_full)............
% 0.19/0.47  
% 0.19/0.47  ********************************
% 0.19/0.47  *   All subproblems solved!    *
% 0.19/0.47  ********************************
% 0.19/0.47  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:0,axioms:8,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:74,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:156,loop_count:0,foatp_calls:1,translation:fof_full)
% 0.19/0.47  
% 0.19/0.47  %**** Beginning of derivation protocol ****
% 0.19/0.47  % SZS output start CNFRefutation
% See solution above
% 0.19/0.48  
% 0.19/0.48  %**** End of derivation protocol ****
% 0.19/0.48  %**** no. of clauses in derivation: 157 ****
% 0.19/0.48  %**** clause counter: 156 ****
% 0.19/0.48  
% 0.19/0.48  % SZS status Theorem for /export/starexec/sandbox2/benchmark/theBenchmark.p : (rf:0,axioms:8,ps:3,u:6,ude:true,rLeibEQ:true,rAndEQ:true,use_choice:true,use_extuni:true,use_extcnf_combined:true,expand_extuni:false,foatp:e,atp_timeout:74,atp_calls_frequency:10,ordering:none,proof_output:1,protocol_output:false,clause_count:156,loop_count:0,foatp_calls:1,translation:fof_full)
%------------------------------------------------------------------------------