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DT2H2X---1.9.5.THM-Ref.s

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%------------------------------------------------------------------------------
% File     : DT2H2X---1.9.5
% Problem  : SEU639^2 : TPTP v9.2.1. Released v3.7.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300

% Computer : n022.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Wed Feb 25 09:35:50 AM UTC 2026

% Result   : Theorem 1.84s 1.46s
% Output   : Refutation 1.84s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   35
%            Number of leaves      :   11
% Syntax   : Number of formulae    :  151 ( 106 unt;   0 typ;   2 def)
%            Number of atoms       : 1343 ( 255 equ;   0 cnn)
%            Maximal formula atoms :   10 (   8 avg)
%            Number of connectives : 2391 (  52   ~;  42   |;  26   &;1644   @)
%                                         (   2 <=>; 361  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   18 (   2 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :  115 ( 115   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   25 (  20 usr;  17 con; 0-2 aty)
%                                         ( 243  !!;  21  ??;   0 @@+;   0 @@-)
%            Number of variables   :  439 ( 328   ^; 109   !;   2   ?; 439   :)

% Comments : 
%------------------------------------------------------------------------------
thf(func_def_0,type,
    in: $i > $i > $o ).

thf(func_def_2,type,
    setadjoin: $i > $i > $i ).

thf(func_def_3,type,
    dsetconstr: $i > ( $i > $o ) > $i ).

thf(func_def_11,type,
    singleton: $i > $o ).

thf(func_def_12,type,
    ex1: $i > ( $i > $o ) > $o ).

thf(func_def_29,type,
    ph1: 
      !>[X0: $tType] : X0 ).

thf(func_def_30,type,
    sK2: $i > $o ).

thf(f625,plain,
    $false,
    inference(avatar_sat_refutation,[status(thm)],[f347,f558,f622]) ).

thf(f622,plain,
    ~ spl0_1,
    inference(avatar_contradiction_clause,[status(thm)],[f621]) ).

thf(f621,plain,
    ( $false
    | ~ spl0_1 ),
    inference(trivial_inequality_removal,[status(thm)],[f620]) ).

thf(f620,plain,
    ( ( $false = $true )
    | ~ spl0_1 ),
    inference(backward_demodulation,[status(thm)],[f150,f618]) ).

thf(f618,plain,
    ( ( $false
      = ( in @ sK4 @ ( dsetconstr @ sK3 @ sK2 ) ) )
    | ~ spl0_1 ),
    inference(backward_demodulation,[status(thm)],[f571,f599]) ).

thf(f599,plain,
    ( ( sK6 = sK4 )
    | ~ spl0_1 ),
    inference(equality_proxy_clausification,[status(thm)],[f598]) ).

thf(f598,plain,
    ( ( ( sK4 = sK6 )
      = $true )
    | ~ spl0_1 ),
    inference(boolean_simplification,[status(thm)],[f588]) ).

thf(f588,plain,
    ( ( ( $true
       => ( sK4 = sK6 ) )
      = $true )
    | ~ spl0_1 ),
    inference(superposition,[status(thm)],[f103,f572]) ).

thf(f572,plain,
    ( ( $true
      = ( in @ sK6 @ ( setadjoin @ sK4 @ emptyset ) ) )
    | ~ spl0_1 ),
    inference(binary_proxy_clausification,[status(thm)],[f569]) ).

thf(f569,plain,
    ( ( ( ( in @ sK6 @ ( setadjoin @ sK4 @ emptyset ) )
       => ( in @ sK6 @ ( dsetconstr @ sK3 @ sK2 ) ) )
      = $false )
    | ~ spl0_1 ),
    inference(beta_eta_normalization,[status(thm)],[f564]) ).

thf(f564,plain,
    ( ( ( ^ [Y0: $i] :
            ( ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) )
           => ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) ) )
        @ sK6 )
      = $false )
    | ~ spl0_1 ),
    inference(sigma_clausification,[status(thm)],[f343]) ).

thf(f343,plain,
    ( ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) )
           => ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) ) ) )
      = $false )
    | ~ spl0_1 ),
    inference(avatar_component_clause,[status(thm)],[f342]) ).

thf(f342,definition,
    ( spl0_1
  <=> ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) )
           => ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) ) ) )
      = $false ) ),
    introduced(definition,[new_symbols(naming,[spl0_1])],[avatar_definition]) ).

thf(f103,plain,
    ! [X2: $i,X1: $i] :
      ( $true
      = ( ( in @ X1 @ ( setadjoin @ X2 @ emptyset ) )
       => ( X2 = X1 ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f102]) ).

thf(f102,plain,
    ! [X2: $i,X1: $i] :
      ( ( ^ [Y0: $i] :
            ( ( in @ X1 @ ( setadjoin @ Y0 @ emptyset ) )
           => ( Y0 = X1 ) )
        @ X2 )
      = $true ),
    inference(pi_clausification,[status(thm)],[f101]) ).

thf(f101,plain,
    ! [X1: $i] :
      ( $true
      = ( !! @ $i
        @ ^ [Y0: $i] :
            ( ( in @ X1 @ ( setadjoin @ Y0 @ emptyset ) )
           => ( Y0 = X1 ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f100]) ).

thf(f100,plain,
    ! [X1: $i] :
      ( ( ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
               => ( Y1 = Y0 ) ) )
        @ X1 )
      = $true ),
    inference(pi_clausification,[status(thm)],[f95]) ).

thf(f95,plain,
    ( ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
             => ( Y1 = Y0 ) ) ) )
    = $true ),
    inference(binary_proxy_clausification,[status(thm)],[f83]) ).

thf(f83,plain,
    ( $false
    = ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
               => ( Y1 = Y0 ) ) ) )
     => ( ( !! @ $i
          @ ^ [Y0: $i] :
              ( !! @ $i
              @ ^ [Y1: $i] :
                  ( ( Y1 = Y0 )
                 => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) )
       => ( !! @ ( $i > $o )
          @ ^ [Y0: $i > $o] :
              ( !! @ $i
              @ ^ [Y1: $i] :
                  ( !! @ $i
                  @ ^ [Y2: $i] :
                      ( ( in @ Y2 @ Y1 )
                     => ( ( Y0 @ Y2 )
                       => ( ( !! @ $i
                            @ ^ [Y3: $i] :
                                ( ( in @ Y3 @ Y1 )
                               => ( ( Y0 @ Y3 )
                                 => ( Y2 = Y3 ) ) ) )
                         => ( ?? @ $i
                            @ ^ [Y3: $i] :
                                ( ( in @ Y3 @ ( dsetconstr @ Y1 @ Y0 ) )
                                & ( ( setadjoin @ Y3 @ emptyset )
                                  = ( dsetconstr @ Y1 @ Y0 ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f70]) ).

thf(f70,plain,
    ( $false
    = ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( ( !! @ $i
                  @ ^ [Y2: $i] :
                      ( ( in @ Y2 @ Y1 )
                     => ( in @ Y2 @ Y0 ) ) )
               => ( ( !! @ $i
                    @ ^ [Y2: $i] :
                        ( ( in @ Y2 @ Y0 )
                       => ( in @ Y2 @ Y1 ) ) )
                 => ( Y1 = Y0 ) ) ) ) )
     => ( ( !! @ $i
          @ ^ [Y0: $i] :
              ( !! @ $i
              @ ^ [Y1: $i] :
                  ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
                 => ( Y1 = Y0 ) ) ) )
       => ( ( !! @ $i
            @ ^ [Y0: $i] :
                ( !! @ $i
                @ ^ [Y1: $i] :
                    ( ( Y1 = Y0 )
                   => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) )
         => ( !! @ ( $i > $o )
            @ ^ [Y0: $i > $o] :
                ( !! @ $i
                @ ^ [Y1: $i] :
                    ( !! @ $i
                    @ ^ [Y2: $i] :
                        ( ( in @ Y2 @ Y1 )
                       => ( ( Y0 @ Y2 )
                         => ( ( !! @ $i
                              @ ^ [Y3: $i] :
                                  ( ( in @ Y3 @ Y1 )
                                 => ( ( Y0 @ Y3 )
                                   => ( Y2 = Y3 ) ) ) )
                           => ( ?? @ $i
                              @ ^ [Y3: $i] :
                                  ( ( in @ Y3 @ ( dsetconstr @ Y1 @ Y0 ) )
                                  & ( ( setadjoin @ Y3 @ emptyset )
                                    = ( dsetconstr @ Y1 @ Y0 ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f57]) ).

thf(f57,plain,
    ( $false
    = ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( !! @ ( $i > $o )
                @ ^ [Y2: $i > $o] :
                    ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                   => ( Y2 @ Y0 ) ) ) ) )
     => ( ( !! @ $i
          @ ^ [Y0: $i] :
              ( !! @ $i
              @ ^ [Y1: $i] :
                  ( ( !! @ $i
                    @ ^ [Y2: $i] :
                        ( ( in @ Y2 @ Y1 )
                       => ( in @ Y2 @ Y0 ) ) )
                 => ( ( !! @ $i
                      @ ^ [Y2: $i] :
                          ( ( in @ Y2 @ Y0 )
                         => ( in @ Y2 @ Y1 ) ) )
                   => ( Y1 = Y0 ) ) ) ) )
       => ( ( !! @ $i
            @ ^ [Y0: $i] :
                ( !! @ $i
                @ ^ [Y1: $i] :
                    ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
                   => ( Y1 = Y0 ) ) ) )
         => ( ( !! @ $i
              @ ^ [Y0: $i] :
                  ( !! @ $i
                  @ ^ [Y1: $i] :
                      ( ( Y1 = Y0 )
                     => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) )
           => ( !! @ ( $i > $o )
              @ ^ [Y0: $i > $o] :
                  ( !! @ $i
                  @ ^ [Y1: $i] :
                      ( !! @ $i
                      @ ^ [Y2: $i] :
                          ( ( in @ Y2 @ Y1 )
                         => ( ( Y0 @ Y2 )
                           => ( ( !! @ $i
                                @ ^ [Y3: $i] :
                                    ( ( in @ Y3 @ Y1 )
                                   => ( ( Y0 @ Y3 )
                                     => ( Y2 = Y3 ) ) ) )
                             => ( ?? @ $i
                                @ ^ [Y3: $i] :
                                    ( ( in @ Y3 @ ( dsetconstr @ Y1 @ Y0 ) )
                                    & ( ( setadjoin @ Y3 @ emptyset )
                                      = ( dsetconstr @ Y1 @ Y0 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f44]) ).

thf(f44,plain,
    ( ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( !! @ ( $i > $o )
                @ ^ [Y2: $i > $o] :
                    ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                   => ( in @ Y0 @ Y1 ) ) ) ) )
     => ( ( !! @ $i
          @ ^ [Y0: $i] :
              ( !! @ $i
              @ ^ [Y1: $i] :
                  ( !! @ ( $i > $o )
                  @ ^ [Y2: $i > $o] :
                      ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                     => ( Y2 @ Y0 ) ) ) ) )
       => ( ( !! @ $i
            @ ^ [Y0: $i] :
                ( !! @ $i
                @ ^ [Y1: $i] :
                    ( ( !! @ $i
                      @ ^ [Y2: $i] :
                          ( ( in @ Y2 @ Y1 )
                         => ( in @ Y2 @ Y0 ) ) )
                   => ( ( !! @ $i
                        @ ^ [Y2: $i] :
                            ( ( in @ Y2 @ Y0 )
                           => ( in @ Y2 @ Y1 ) ) )
                     => ( Y1 = Y0 ) ) ) ) )
         => ( ( !! @ $i
              @ ^ [Y0: $i] :
                  ( !! @ $i
                  @ ^ [Y1: $i] :
                      ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
                     => ( Y1 = Y0 ) ) ) )
           => ( ( !! @ $i
                @ ^ [Y0: $i] :
                    ( !! @ $i
                    @ ^ [Y1: $i] :
                        ( ( Y1 = Y0 )
                       => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) )
             => ( !! @ ( $i > $o )
                @ ^ [Y0: $i > $o] :
                    ( !! @ $i
                    @ ^ [Y1: $i] :
                        ( !! @ $i
                        @ ^ [Y2: $i] :
                            ( ( in @ Y2 @ Y1 )
                           => ( ( Y0 @ Y2 )
                             => ( ( !! @ $i
                                  @ ^ [Y3: $i] :
                                      ( ( in @ Y3 @ Y1 )
                                     => ( ( Y0 @ Y3 )
                                       => ( Y2 = Y3 ) ) ) )
                               => ( ?? @ $i
                                  @ ^ [Y3: $i] :
                                      ( ( in @ Y3 @ ( dsetconstr @ Y1 @ Y0 ) )
                                      & ( ( setadjoin @ Y3 @ emptyset )
                                        = ( dsetconstr @ Y1 @ Y0 ) ) ) ) ) ) ) ) ) ) ) ) ) ) )
    = $false ),
    inference(binary_proxy_clausification,[status(thm)],[f41]) ).

thf(f41,plain,
    ( ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( !! @ ( $i > $o )
                @ ^ [Y2: $i > $o] :
                    ( ( in @ Y1 @ Y0 )
                   => ( ( Y2 @ Y1 )
                     => ( in @ Y1 @ ( dsetconstr @ Y0 @ Y2 ) ) ) ) ) ) )
     => ( ( !! @ $i
          @ ^ [Y0: $i] :
              ( !! @ $i
              @ ^ [Y1: $i] :
                  ( !! @ ( $i > $o )
                  @ ^ [Y2: $i > $o] :
                      ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                     => ( in @ Y0 @ Y1 ) ) ) ) )
       => ( ( !! @ $i
            @ ^ [Y0: $i] :
                ( !! @ $i
                @ ^ [Y1: $i] :
                    ( !! @ ( $i > $o )
                    @ ^ [Y2: $i > $o] :
                        ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                       => ( Y2 @ Y0 ) ) ) ) )
         => ( ( !! @ $i
              @ ^ [Y0: $i] :
                  ( !! @ $i
                  @ ^ [Y1: $i] :
                      ( ( !! @ $i
                        @ ^ [Y2: $i] :
                            ( ( in @ Y2 @ Y1 )
                           => ( in @ Y2 @ Y0 ) ) )
                     => ( ( !! @ $i
                          @ ^ [Y2: $i] :
                              ( ( in @ Y2 @ Y0 )
                             => ( in @ Y2 @ Y1 ) ) )
                       => ( Y1 = Y0 ) ) ) ) )
           => ( ( !! @ $i
                @ ^ [Y0: $i] :
                    ( !! @ $i
                    @ ^ [Y1: $i] :
                        ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
                       => ( Y1 = Y0 ) ) ) )
             => ( ( !! @ $i
                  @ ^ [Y0: $i] :
                      ( !! @ $i
                      @ ^ [Y1: $i] :
                          ( ( Y1 = Y0 )
                         => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) )
               => ( !! @ ( $i > $o )
                  @ ^ [Y0: $i > $o] :
                      ( !! @ $i
                      @ ^ [Y1: $i] :
                          ( !! @ $i
                          @ ^ [Y2: $i] :
                              ( ( in @ Y2 @ Y1 )
                             => ( ( Y0 @ Y2 )
                               => ( ( !! @ $i
                                    @ ^ [Y3: $i] :
                                        ( ( in @ Y3 @ Y1 )
                                       => ( ( Y0 @ Y3 )
                                         => ( Y2 = Y3 ) ) ) )
                                 => ( ?? @ $i
                                    @ ^ [Y3: $i] :
                                        ( ( in @ Y3 @ ( dsetconstr @ Y1 @ Y0 ) )
                                        & ( ( setadjoin @ Y3 @ emptyset )
                                          = ( dsetconstr @ Y1 @ Y0 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) )
    = $false ),
    inference(not_proxy_clausification,[status(thm)],[f40]) ).

thf(f40,plain,
    ( ( ~ ( ( !! @ $i
            @ ^ [Y0: $i] :
                ( !! @ $i
                @ ^ [Y1: $i] :
                    ( !! @ ( $i > $o )
                    @ ^ [Y2: $i > $o] :
                        ( ( in @ Y1 @ Y0 )
                       => ( ( Y2 @ Y1 )
                         => ( in @ Y1 @ ( dsetconstr @ Y0 @ Y2 ) ) ) ) ) ) )
         => ( ( !! @ $i
              @ ^ [Y0: $i] :
                  ( !! @ $i
                  @ ^ [Y1: $i] :
                      ( !! @ ( $i > $o )
                      @ ^ [Y2: $i > $o] :
                          ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                         => ( in @ Y0 @ Y1 ) ) ) ) )
           => ( ( !! @ $i
                @ ^ [Y0: $i] :
                    ( !! @ $i
                    @ ^ [Y1: $i] :
                        ( !! @ ( $i > $o )
                        @ ^ [Y2: $i > $o] :
                            ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                           => ( Y2 @ Y0 ) ) ) ) )
             => ( ( !! @ $i
                  @ ^ [Y0: $i] :
                      ( !! @ $i
                      @ ^ [Y1: $i] :
                          ( ( !! @ $i
                            @ ^ [Y2: $i] :
                                ( ( in @ Y2 @ Y1 )
                               => ( in @ Y2 @ Y0 ) ) )
                         => ( ( !! @ $i
                              @ ^ [Y2: $i] :
                                  ( ( in @ Y2 @ Y0 )
                                 => ( in @ Y2 @ Y1 ) ) )
                           => ( Y1 = Y0 ) ) ) ) )
               => ( ( !! @ $i
                    @ ^ [Y0: $i] :
                        ( !! @ $i
                        @ ^ [Y1: $i] :
                            ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
                           => ( Y1 = Y0 ) ) ) )
                 => ( ( !! @ $i
                      @ ^ [Y0: $i] :
                          ( !! @ $i
                          @ ^ [Y1: $i] :
                              ( ( Y1 = Y0 )
                             => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) )
                   => ( !! @ ( $i > $o )
                      @ ^ [Y0: $i > $o] :
                          ( !! @ $i
                          @ ^ [Y1: $i] :
                              ( !! @ $i
                              @ ^ [Y2: $i] :
                                  ( ( in @ Y2 @ Y1 )
                                 => ( ( Y0 @ Y2 )
                                   => ( ( !! @ $i
                                        @ ^ [Y3: $i] :
                                            ( ( in @ Y3 @ Y1 )
                                           => ( ( Y0 @ Y3 )
                                             => ( Y2 = Y3 ) ) ) )
                                     => ( ?? @ $i
                                        @ ^ [Y3: $i] :
                                            ( ( in @ Y3 @ ( dsetconstr @ Y1 @ Y0 ) )
                                            & ( ( setadjoin @ Y3 @ emptyset )
                                              = ( dsetconstr @ Y1 @ Y0 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) )
    = $true ),
    inference(beta_eta_normalization,[status(thm)],[f39]) ).

thf(f39,plain,
    ( $true
    = ( ~ ( ( !! @ $i
            @ ^ [Y0: $i] :
                ( !! @ $i
                @ ^ [Y1: $i] :
                    ( !! @ ( $i > $o )
                    @ ^ [Y2: $i > $o] :
                        ( ( in @ Y1 @ Y0 )
                       => ( ( Y2 @ Y1 )
                         => ( in @ Y1
                            @ ( dsetconstr @ Y0
                              @ ^ [Y3: $i] : ( Y2 @ Y3 ) ) ) ) ) ) ) )
         => ( ( !! @ $i
              @ ^ [Y0: $i] :
                  ( !! @ $i
                  @ ^ [Y1: $i] :
                      ( !! @ ( $i > $o )
                      @ ^ [Y2: $i > $o] :
                          ( ( in @ Y0
                            @ ( dsetconstr @ Y1
                              @ ^ [Y3: $i] : ( Y2 @ Y3 ) ) )
                         => ( in @ Y0 @ Y1 ) ) ) ) )
           => ( ( !! @ $i
                @ ^ [Y0: $i] :
                    ( !! @ $i
                    @ ^ [Y1: $i] :
                        ( !! @ ( $i > $o )
                        @ ^ [Y2: $i > $o] :
                            ( ( in @ Y0
                              @ ( dsetconstr @ Y1
                                @ ^ [Y3: $i] : ( Y2 @ Y3 ) ) )
                           => ( Y2 @ Y0 ) ) ) ) )
             => ( ( !! @ $i
                  @ ^ [Y0: $i] :
                      ( !! @ $i
                      @ ^ [Y1: $i] :
                          ( ( !! @ $i
                            @ ^ [Y2: $i] :
                                ( ( in @ Y2 @ Y1 )
                               => ( in @ Y2 @ Y0 ) ) )
                         => ( ( !! @ $i
                              @ ^ [Y2: $i] :
                                  ( ( in @ Y2 @ Y0 )
                                 => ( in @ Y2 @ Y1 ) ) )
                           => ( Y1 = Y0 ) ) ) ) )
               => ( ( !! @ $i
                    @ ^ [Y0: $i] :
                        ( !! @ $i
                        @ ^ [Y1: $i] :
                            ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
                           => ( Y1 = Y0 ) ) ) )
                 => ( ( !! @ $i
                      @ ^ [Y0: $i] :
                          ( !! @ $i
                          @ ^ [Y1: $i] :
                              ( ( Y1 = Y0 )
                             => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) )
                   => ( !! @ ( $i > $o )
                      @ ^ [Y0: $i > $o] :
                          ( !! @ $i
                          @ ^ [Y1: $i] :
                              ( !! @ $i
                              @ ^ [Y2: $i] :
                                  ( ( in @ Y2 @ Y1 )
                                 => ( ( Y0 @ Y2 )
                                   => ( ( !! @ $i
                                        @ ^ [Y3: $i] :
                                            ( ( in @ Y3 @ Y1 )
                                           => ( ( Y0 @ Y3 )
                                             => ( Y2 = Y3 ) ) ) )
                                     => ( ^ [Y3: $i,Y4: $i > $o] :
                                            ( ^ [Y5: $i] :
                                                ( ?? @ $i
                                                @ ^ [Y6: $i] :
                                                    ( ( in @ Y6 @ Y5 )
                                                    & ( ( setadjoin @ Y6 @ emptyset )
                                                      = Y5 ) ) )
                                            @ ( dsetconstr @ Y3
                                              @ ^ [Y5: $i] : ( Y4 @ Y5 ) ) )
                                        @ Y1
                                        @ ^ [Y3: $i] : ( Y0 @ Y3 ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ),
    inference(definition_unfolding,[status(thm)],[f34,f37,f33,f35,f30,f31,f32,f38]) ).

thf(f38,plain,
    ( ex1
    = ( ^ [Y0: $i,Y1: $i > $o] :
          ( ^ [Y2: $i] :
              ( ?? @ $i
              @ ^ [Y3: $i] :
                  ( ( in @ Y3 @ Y2 )
                  & ( ( setadjoin @ Y3 @ emptyset )
                    = Y2 ) ) )
          @ ( dsetconstr @ Y0
            @ ^ [Y2: $i] : ( Y1 @ Y2 ) ) ) ) ),
    inference(definition_unfolding,[status(thm)],[f29,f36]) ).

thf(f36,plain,
    ( singleton
    = ( ^ [Y0: $i] :
          ( ?? @ $i
          @ ^ [Y1: $i] :
              ( ( in @ Y1 @ Y0 )
              & ( ( setadjoin @ Y1 @ emptyset )
                = Y0 ) ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f27]) ).

thf(f27,plain,
    ( singleton
    = ( ^ [Y0: $i] :
          ( ?? @ $i
          @ ^ [Y1: $i] :
              ( ( in @ Y1 @ Y0 )
              & ( ( setadjoin @ Y1 @ emptyset )
                = Y0 ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f26]) ).

thf(f26,plain,
    ( ( ^ [X0: $i] :
        ? [X1: $i] :
          ( ( ( setadjoin @ X1 @ emptyset )
            = X0 )
          & ( in @ X1 @ X0 ) ) )
    = singleton ),
    inference(rectify,[status(thm)],[f7]) ).

thf(f7,axiom,
    ( ( ^ [X0: $i] :
        ? [X2: $i] :
          ( ( ( setadjoin @ X2 @ emptyset )
            = X0 )
          & ( in @ X2 @ X0 ) ) )
    = singleton ),
    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',singleton) ).

thf(f29,plain,
    ( ex1
    = ( ^ [Y0: $i,Y1: $i > $o] :
          ( singleton
          @ ( dsetconstr @ Y0
            @ ^ [Y2: $i] : ( Y1 @ Y2 ) ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f28]) ).

thf(f28,plain,
    ( ex1
    = ( ^ [Y0: $i,Y1: $i > $o] :
          ( singleton
          @ ( dsetconstr @ Y0
            @ ^ [Y2: $i] : ( Y1 @ Y2 ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f8]) ).

thf(f8,axiom,
    ( ex1
    = ( ^ [X0: $i,X1: $i > $o] :
          ( singleton
          @ ( dsetconstr @ X0
            @ ^ [X2: $i] : ( X1 @ X2 ) ) ) ) ),
    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',ex1) ).

thf(f32,plain,
    ( eqinunit
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( Y1 = Y0 )
             => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f13]) ).

thf(f13,plain,
    ( eqinunit
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( Y1 = Y0 )
             => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f12]) ).

thf(f12,plain,
    ! [X0: $i,X1: $i] :
      ( ( ( X0 = X1 )
       => ( in @ X0 @ ( setadjoin @ X1 @ emptyset ) ) )
      = eqinunit ),
    inference(rectify,[status(thm)],[f6]) ).

thf(f6,axiom,
    ! [X2: $i,X3: $i] :
      ( ( ( X2 = X3 )
       => ( in @ X2 @ ( setadjoin @ X3 @ emptyset ) ) )
      = eqinunit ),
    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',eqinunit) ).

thf(f31,plain,
    ( uniqinunit
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
             => ( Y1 = Y0 ) ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f21]) ).

thf(f21,plain,
    ( uniqinunit
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( in @ Y0 @ ( setadjoin @ Y1 @ emptyset ) )
             => ( Y1 = Y0 ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f20]) ).

thf(f20,plain,
    ( uniqinunit
    = ( ! [X0: $i,X1: $i] :
          ( ( in @ X1 @ ( setadjoin @ X0 @ emptyset ) )
         => ( X0 = X1 ) ) ) ),
    inference(rectify,[status(thm)],[f5]) ).

thf(f5,axiom,
    ( uniqinunit
    = ( ! [X3: $i,X2: $i] :
          ( ( in @ X2 @ ( setadjoin @ X3 @ emptyset ) )
         => ( X2 = X3 ) ) ) ),
    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',uniqinunit) ).

thf(f30,plain,
    ( setext
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( !! @ $i
                @ ^ [Y2: $i] :
                    ( ( in @ Y2 @ Y1 )
                   => ( in @ Y2 @ Y0 ) ) )
             => ( ( !! @ $i
                  @ ^ [Y2: $i] :
                      ( ( in @ Y2 @ Y0 )
                     => ( in @ Y2 @ Y1 ) ) )
               => ( Y1 = Y0 ) ) ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f23]) ).

thf(f23,plain,
    ( setext
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( !! @ $i
                @ ^ [Y2: $i] :
                    ( ( in @ Y2 @ Y1 )
                   => ( in @ Y2 @ Y0 ) ) )
             => ( ( !! @ $i
                  @ ^ [Y2: $i] :
                      ( ( in @ Y2 @ Y0 )
                     => ( in @ Y2 @ Y1 ) ) )
               => ( Y1 = Y0 ) ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f22]) ).

thf(f22,plain,
    ! [X0: $i,X1: $i] :
      ( ( ! [X2: $i] :
            ( ( in @ X2 @ X0 )
           => ( in @ X2 @ X1 ) )
       => ( ! [X3: $i] :
              ( ( in @ X3 @ X1 )
             => ( in @ X3 @ X0 ) )
         => ( X0 = X1 ) ) )
      = setext ),
    inference(rectify,[status(thm)],[f4]) ).

thf(f4,axiom,
    ! [X0: $i,X4: $i] :
      ( ( ! [X2: $i] :
            ( ( in @ X2 @ X0 )
           => ( in @ X2 @ X4 ) )
       => ( ! [X2: $i] :
              ( ( in @ X2 @ X4 )
             => ( in @ X2 @ X0 ) )
         => ( X0 = X4 ) ) )
      = setext ),
    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',setext) ).

thf(f35,plain,
    ( dsetconstrER
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ ( $i > $o )
              @ ^ [Y2: $i > $o] :
                  ( ( in @ Y0
                    @ ( dsetconstr @ Y1
                      @ ^ [Y3: $i] : ( Y2 @ Y3 ) ) )
                 => ( Y2 @ Y0 ) ) ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f17]) ).

thf(f17,plain,
    ( dsetconstrER
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ ( $i > $o )
              @ ^ [Y2: $i > $o] :
                  ( ( in @ Y0
                    @ ( dsetconstr @ Y1
                      @ ^ [Y3: $i] : ( Y2 @ Y3 ) ) )
                 => ( Y2 @ Y0 ) ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f16]) ).

thf(f16,plain,
    ! [X0: $i > $o,X1: $i,X2: $i] :
      ( ( ( in @ X2
          @ ( dsetconstr @ X1
            @ ^ [X3: $i] : ( X0 @ X3 ) ) )
       => ( X0 @ X2 ) )
      = dsetconstrER ),
    inference(rectify,[status(thm)],[f3]) ).

thf(f3,axiom,
    ! [X1: $i > $o,X0: $i,X2: $i] :
      ( ( ( in @ X2
          @ ( dsetconstr @ X0
            @ ^ [X3: $i] : ( X1 @ X3 ) ) )
       => ( X1 @ X2 ) )
      = dsetconstrER ),
    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',dsetconstrER) ).

thf(f33,plain,
    ( dsetconstrEL
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ ( $i > $o )
              @ ^ [Y2: $i > $o] :
                  ( ( in @ Y0
                    @ ( dsetconstr @ Y1
                      @ ^ [Y3: $i] : ( Y2 @ Y3 ) ) )
                 => ( in @ Y0 @ Y1 ) ) ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f19]) ).

thf(f19,plain,
    ( dsetconstrEL
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ ( $i > $o )
              @ ^ [Y2: $i > $o] :
                  ( ( in @ Y0
                    @ ( dsetconstr @ Y1
                      @ ^ [Y3: $i] : ( Y2 @ Y3 ) ) )
                 => ( in @ Y0 @ Y1 ) ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f18]) ).

thf(f18,plain,
    ! [X0: $i > $o,X1: $i,X2: $i] :
      ( ( ( in @ X2
          @ ( dsetconstr @ X1
            @ ^ [X3: $i] : ( X0 @ X3 ) ) )
       => ( in @ X2 @ X1 ) )
      = dsetconstrEL ),
    inference(rectify,[status(thm)],[f2]) ).

thf(f2,axiom,
    ! [X1: $i > $o,X0: $i,X2: $i] :
      ( ( ( in @ X2
          @ ( dsetconstr @ X0
            @ ^ [X3: $i] : ( X1 @ X3 ) ) )
       => ( in @ X2 @ X0 ) )
      = dsetconstrEL ),
    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',dsetconstrEL) ).

thf(f37,plain,
    ( dsetconstrI
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ ( $i > $o )
              @ ^ [Y2: $i > $o] :
                  ( ( in @ Y1 @ Y0 )
                 => ( ( Y2 @ Y1 )
                   => ( in @ Y1
                      @ ( dsetconstr @ Y0
                        @ ^ [Y3: $i] : ( Y2 @ Y3 ) ) ) ) ) ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f25]) ).

thf(f25,plain,
    ( dsetconstrI
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ ( $i > $o )
              @ ^ [Y2: $i > $o] :
                  ( ( in @ Y1 @ Y0 )
                 => ( ( Y2 @ Y1 )
                   => ( in @ Y1
                      @ ( dsetconstr @ Y0
                        @ ^ [Y3: $i] : ( Y2 @ Y3 ) ) ) ) ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f24]) ).

thf(f24,plain,
    ( dsetconstrI
    = ( ! [X0: $i > $o,X1: $i,X2: $i] :
          ( ( in @ X1 @ X2 )
         => ( ( X0 @ X1 )
           => ( in @ X1
              @ ( dsetconstr @ X2
                @ ^ [X3: $i] : ( X0 @ X3 ) ) ) ) ) ) ),
    inference(rectify,[status(thm)],[f1]) ).

thf(f1,axiom,
    ( dsetconstrI
    = ( ! [X1: $i > $o,X2: $i,X0: $i] :
          ( ( in @ X2 @ X0 )
         => ( ( X1 @ X2 )
           => ( in @ X2
              @ ( dsetconstr @ X0
                @ ^ [X3: $i] : ( X1 @ X3 ) ) ) ) ) ) ),
    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',dsetconstrI) ).

thf(f34,plain,
    ( ( ~ ( dsetconstrI
         => ( dsetconstrEL
           => ( dsetconstrER
             => ( setext
               => ( uniqinunit
                 => ( eqinunit
                   => ( !! @ ( $i > $o )
                      @ ^ [Y0: $i > $o] :
                          ( !! @ $i
                          @ ^ [Y1: $i] :
                              ( !! @ $i
                              @ ^ [Y2: $i] :
                                  ( ( in @ Y2 @ Y1 )
                                 => ( ( Y0 @ Y2 )
                                   => ( ( !! @ $i
                                        @ ^ [Y3: $i] :
                                            ( ( in @ Y3 @ Y1 )
                                           => ( ( Y0 @ Y3 )
                                             => ( Y2 = Y3 ) ) ) )
                                     => ( ex1 @ Y1
                                        @ ^ [Y3: $i] : ( Y0 @ Y3 ) ) ) ) ) ) ) ) ) ) ) ) ) ) )
    = $true ),
    inference(cnf_transformation,[status(thm)],[f15]) ).

thf(f15,plain,
    ( ( ~ ( dsetconstrI
         => ( dsetconstrEL
           => ( dsetconstrER
             => ( setext
               => ( uniqinunit
                 => ( eqinunit
                   => ( !! @ ( $i > $o )
                      @ ^ [Y0: $i > $o] :
                          ( !! @ $i
                          @ ^ [Y1: $i] :
                              ( !! @ $i
                              @ ^ [Y2: $i] :
                                  ( ( in @ Y2 @ Y1 )
                                 => ( ( Y0 @ Y2 )
                                   => ( ( !! @ $i
                                        @ ^ [Y3: $i] :
                                            ( ( in @ Y3 @ Y1 )
                                           => ( ( Y0 @ Y3 )
                                             => ( Y2 = Y3 ) ) ) )
                                     => ( ex1 @ Y1
                                        @ ^ [Y3: $i] : ( Y0 @ Y3 ) ) ) ) ) ) ) ) ) ) ) ) ) ) )
    = $true ),
    inference(fool_elimination,[status(thm)],[f14]) ).

thf(f14,plain,
    ~ ( dsetconstrI
     => ( dsetconstrEL
       => ( dsetconstrER
         => ( setext
           => ( uniqinunit
             => ( eqinunit
               => ! [X0: $i,X1: $i,X2: $i > $o] :
                    ( ( in @ X0 @ X1 )
                   => ( ( X2 @ X0 )
                     => ( ! [X3: $i] :
                            ( ( in @ X3 @ X1 )
                           => ( ( X2 @ X3 )
                             => ( X0 = X3 ) ) )
                       => ( ex1 @ X1
                          @ ^ [X4: $i] : ( X2 @ X4 ) ) ) ) ) ) ) ) ) ) ),
    inference(rectify,[status(thm)],[f10]) ).

thf(f10,negated_conjecture,
    ~ ( dsetconstrI
     => ( dsetconstrEL
       => ( dsetconstrER
         => ( setext
           => ( uniqinunit
             => ( eqinunit
               => ! [X2: $i,X0: $i,X1: $i > $o] :
                    ( ( in @ X2 @ X0 )
                   => ( ( X1 @ X2 )
                     => ( ! [X3: $i] :
                            ( ( in @ X3 @ X0 )
                           => ( ( X1 @ X3 )
                             => ( X2 = X3 ) ) )
                       => ( ex1 @ X0
                          @ ^ [X3: $i] : ( X1 @ X3 ) ) ) ) ) ) ) ) ) ) ),
    inference(negated_conjecture,[status(cth)],[f9]) ).

thf(f9,conjecture,
    ( dsetconstrI
   => ( dsetconstrEL
     => ( dsetconstrER
       => ( setext
         => ( uniqinunit
           => ( eqinunit
             => ! [X2: $i,X0: $i,X1: $i > $o] :
                  ( ( in @ X2 @ X0 )
                 => ( ( X1 @ X2 )
                   => ( ! [X3: $i] :
                          ( ( in @ X3 @ X0 )
                         => ( ( X1 @ X3 )
                           => ( X2 = X3 ) ) )
                     => ( ex1 @ X0
                        @ ^ [X3: $i] : ( X1 @ X3 ) ) ) ) ) ) ) ) ) ) ),
    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',ex1I) ).

thf(f571,plain,
    ( ( ( in @ sK6 @ ( dsetconstr @ sK3 @ sK2 ) )
      = $false )
    | ~ spl0_1 ),
    inference(binary_proxy_clausification,[status(thm)],[f569]) ).

thf(f150,plain,
    ( $true
    = ( in @ sK4 @ ( dsetconstr @ sK3 @ sK2 ) ) ),
    inference(boolean_simplification,[status(thm)],[f145]) ).

thf(f145,plain,
    ( $true
    = ( $true
     => ( in @ sK4 @ ( dsetconstr @ sK3 @ sK2 ) ) ) ),
    inference(superposition,[status(thm)],[f135,f140]) ).

thf(f140,plain,
    ( ( sK2 @ sK4 )
    = $true ),
    inference(binary_proxy_clausification,[status(thm)],[f122]) ).

thf(f122,plain,
    ( ( ( sK2 @ sK4 )
     => ( ( !! @ $i
          @ ^ [Y0: $i] :
              ( ( in @ Y0 @ sK3 )
             => ( ( sK2 @ Y0 )
               => ( sK4 = Y0 ) ) ) )
       => ( ?? @ $i
          @ ^ [Y0: $i] :
              ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
              & ( ( setadjoin @ Y0 @ emptyset )
                = ( dsetconstr @ sK3 @ sK2 ) ) ) ) ) )
    = $false ),
    inference(binary_proxy_clausification,[status(thm)],[f121]) ).

thf(f121,plain,
    ( ( ( in @ sK4 @ sK3 )
     => ( ( sK2 @ sK4 )
       => ( ( !! @ $i
            @ ^ [Y0: $i] :
                ( ( in @ Y0 @ sK3 )
               => ( ( sK2 @ Y0 )
                 => ( sK4 = Y0 ) ) ) )
         => ( ?? @ $i
            @ ^ [Y0: $i] :
                ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
                & ( ( setadjoin @ Y0 @ emptyset )
                  = ( dsetconstr @ sK3 @ sK2 ) ) ) ) ) ) )
    = $false ),
    inference(beta_eta_normalization,[status(thm)],[f120]) ).

thf(f120,plain,
    ( $false
    = ( ^ [Y0: $i] :
          ( ( in @ Y0 @ sK3 )
         => ( ( sK2 @ Y0 )
           => ( ( !! @ $i
                @ ^ [Y1: $i] :
                    ( ( in @ Y1 @ sK3 )
                   => ( ( sK2 @ Y1 )
                     => ( Y0 = Y1 ) ) ) )
             => ( ?? @ $i
                @ ^ [Y1: $i] :
                    ( ( in @ Y1 @ ( dsetconstr @ sK3 @ sK2 ) )
                    & ( ( setadjoin @ Y1 @ emptyset )
                      = ( dsetconstr @ sK3 @ sK2 ) ) ) ) ) ) )
      @ sK4 ) ),
    inference(sigma_clausification,[status(thm)],[f119]) ).

thf(f119,plain,
    ( ( !! @ $i
      @ ^ [Y0: $i] :
          ( ( in @ Y0 @ sK3 )
         => ( ( sK2 @ Y0 )
           => ( ( !! @ $i
                @ ^ [Y1: $i] :
                    ( ( in @ Y1 @ sK3 )
                   => ( ( sK2 @ Y1 )
                     => ( Y0 = Y1 ) ) ) )
             => ( ?? @ $i
                @ ^ [Y1: $i] :
                    ( ( in @ Y1 @ ( dsetconstr @ sK3 @ sK2 ) )
                    & ( ( setadjoin @ Y1 @ emptyset )
                      = ( dsetconstr @ sK3 @ sK2 ) ) ) ) ) ) ) )
    = $false ),
    inference(beta_eta_normalization,[status(thm)],[f118]) ).

thf(f118,plain,
    ( $false
    = ( ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( in @ Y1 @ Y0 )
             => ( ( sK2 @ Y1 )
               => ( ( !! @ $i
                    @ ^ [Y2: $i] :
                        ( ( in @ Y2 @ Y0 )
                       => ( ( sK2 @ Y2 )
                         => ( Y1 = Y2 ) ) ) )
                 => ( ?? @ $i
                    @ ^ [Y2: $i] :
                        ( ( in @ Y2 @ ( dsetconstr @ Y0 @ sK2 ) )
                        & ( ( setadjoin @ Y2 @ emptyset )
                          = ( dsetconstr @ Y0 @ sK2 ) ) ) ) ) ) ) )
      @ sK3 ) ),
    inference(sigma_clausification,[status(thm)],[f117]) ).

thf(f117,plain,
    ( $false
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( in @ Y1 @ Y0 )
             => ( ( sK2 @ Y1 )
               => ( ( !! @ $i
                    @ ^ [Y2: $i] :
                        ( ( in @ Y2 @ Y0 )
                       => ( ( sK2 @ Y2 )
                         => ( Y1 = Y2 ) ) ) )
                 => ( ?? @ $i
                    @ ^ [Y2: $i] :
                        ( ( in @ Y2 @ ( dsetconstr @ Y0 @ sK2 ) )
                        & ( ( setadjoin @ Y2 @ emptyset )
                          = ( dsetconstr @ Y0 @ sK2 ) ) ) ) ) ) ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f116]) ).

thf(f116,plain,
    ( ( ^ [Y0: $i > $o] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ $i
              @ ^ [Y2: $i] :
                  ( ( in @ Y2 @ Y1 )
                 => ( ( Y0 @ Y2 )
                   => ( ( !! @ $i
                        @ ^ [Y3: $i] :
                            ( ( in @ Y3 @ Y1 )
                           => ( ( Y0 @ Y3 )
                             => ( Y2 = Y3 ) ) ) )
                     => ( ?? @ $i
                        @ ^ [Y3: $i] :
                            ( ( in @ Y3 @ ( dsetconstr @ Y1 @ Y0 ) )
                            & ( ( setadjoin @ Y3 @ emptyset )
                              = ( dsetconstr @ Y1 @ Y0 ) ) ) ) ) ) ) ) )
      @ sK2 )
    = $false ),
    inference(sigma_clausification,[status(thm)],[f105]) ).

thf(f105,plain,
    ( ( !! @ ( $i > $o )
      @ ^ [Y0: $i > $o] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ $i
              @ ^ [Y2: $i] :
                  ( ( in @ Y2 @ Y1 )
                 => ( ( Y0 @ Y2 )
                   => ( ( !! @ $i
                        @ ^ [Y3: $i] :
                            ( ( in @ Y3 @ Y1 )
                           => ( ( Y0 @ Y3 )
                             => ( Y2 = Y3 ) ) ) )
                     => ( ?? @ $i
                        @ ^ [Y3: $i] :
                            ( ( in @ Y3 @ ( dsetconstr @ Y1 @ Y0 ) )
                            & ( ( setadjoin @ Y3 @ emptyset )
                              = ( dsetconstr @ Y1 @ Y0 ) ) ) ) ) ) ) ) ) )
    = $false ),
    inference(binary_proxy_clausification,[status(thm)],[f94]) ).

thf(f94,plain,
    ( ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( ( Y1 = Y0 )
               => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) )
     => ( !! @ ( $i > $o )
        @ ^ [Y0: $i > $o] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( !! @ $i
                @ ^ [Y2: $i] :
                    ( ( in @ Y2 @ Y1 )
                   => ( ( Y0 @ Y2 )
                     => ( ( !! @ $i
                          @ ^ [Y3: $i] :
                              ( ( in @ Y3 @ Y1 )
                             => ( ( Y0 @ Y3 )
                               => ( Y2 = Y3 ) ) ) )
                       => ( ?? @ $i
                          @ ^ [Y3: $i] :
                              ( ( in @ Y3 @ ( dsetconstr @ Y1 @ Y0 ) )
                              & ( ( setadjoin @ Y3 @ emptyset )
                                = ( dsetconstr @ Y1 @ Y0 ) ) ) ) ) ) ) ) ) ) )
    = $false ),
    inference(binary_proxy_clausification,[status(thm)],[f83]) ).

thf(f135,plain,
    ! [X0: $i > $o] :
      ( ( ( X0 @ sK4 )
       => ( in @ sK4 @ ( dsetconstr @ sK3 @ X0 ) ) )
      = $true ),
    inference(boolean_simplification,[status(thm)],[f129]) ).

thf(f129,plain,
    ! [X0: $i > $o] :
      ( ( $true
       => ( ( X0 @ sK4 )
         => ( in @ sK4 @ ( dsetconstr @ sK3 @ X0 ) ) ) )
      = $true ),
    inference(superposition,[status(thm)],[f55,f123]) ).

thf(f123,plain,
    ( $true
    = ( in @ sK4 @ sK3 ) ),
    inference(binary_proxy_clausification,[status(thm)],[f121]) ).

thf(f55,plain,
    ! [X2: $i,X3: $i > $o,X1: $i] :
      ( $true
      = ( ( in @ X2 @ X1 )
       => ( ( X3 @ X2 )
         => ( in @ X2 @ ( dsetconstr @ X1 @ X3 ) ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f54]) ).

thf(f54,plain,
    ! [X2: $i,X3: $i > $o,X1: $i] :
      ( $true
      = ( ^ [Y0: $i > $o] :
            ( ( in @ X2 @ X1 )
           => ( ( Y0 @ X2 )
             => ( in @ X2 @ ( dsetconstr @ X1 @ Y0 ) ) ) )
        @ X3 ) ),
    inference(pi_clausification,[status(thm)],[f53]) ).

thf(f53,plain,
    ! [X2: $i,X1: $i] :
      ( $true
      = ( !! @ ( $i > $o )
        @ ^ [Y0: $i > $o] :
            ( ( in @ X2 @ X1 )
           => ( ( Y0 @ X2 )
             => ( in @ X2 @ ( dsetconstr @ X1 @ Y0 ) ) ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f52]) ).

thf(f52,plain,
    ! [X2: $i,X1: $i] :
      ( $true
      = ( ^ [Y0: $i] :
            ( !! @ ( $i > $o )
            @ ^ [Y1: $i > $o] :
                ( ( in @ Y0 @ X1 )
               => ( ( Y1 @ Y0 )
                 => ( in @ Y0 @ ( dsetconstr @ X1 @ Y1 ) ) ) ) )
        @ X2 ) ),
    inference(pi_clausification,[status(thm)],[f51]) ).

thf(f51,plain,
    ! [X1: $i] :
      ( $true
      = ( !! @ $i
        @ ^ [Y0: $i] :
            ( !! @ ( $i > $o )
            @ ^ [Y1: $i > $o] :
                ( ( in @ Y0 @ X1 )
               => ( ( Y1 @ Y0 )
                 => ( in @ Y0 @ ( dsetconstr @ X1 @ Y1 ) ) ) ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f50]) ).

thf(f50,plain,
    ! [X1: $i] :
      ( $true
      = ( ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( !! @ ( $i > $o )
                @ ^ [Y2: $i > $o] :
                    ( ( in @ Y1 @ Y0 )
                   => ( ( Y2 @ Y1 )
                     => ( in @ Y1 @ ( dsetconstr @ Y0 @ Y2 ) ) ) ) ) )
        @ X1 ) ),
    inference(pi_clausification,[status(thm)],[f45]) ).

thf(f45,plain,
    ( ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ ( $i > $o )
              @ ^ [Y2: $i > $o] :
                  ( ( in @ Y1 @ Y0 )
                 => ( ( Y2 @ Y1 )
                   => ( in @ Y1 @ ( dsetconstr @ Y0 @ Y2 ) ) ) ) ) ) )
    = $true ),
    inference(binary_proxy_clausification,[status(thm)],[f41]) ).

thf(f558,plain,
    ~ spl0_2,
    inference(avatar_contradiction_clause,[status(thm)],[f557]) ).

thf(f557,plain,
    ( $false
    | ~ spl0_2 ),
    inference(trivial_inequality_removal,[status(thm)],[f556]) ).

thf(f556,plain,
    ( ( $false = $true )
    | ~ spl0_2 ),
    inference(boolean_simplification,[status(thm)],[f555]) ).

thf(f555,plain,
    ( ( $true = ( ~ $true ) )
    | ~ spl0_2 ),
    inference(backward_demodulation,[status(thm)],[f477,f548]) ).

thf(f548,plain,
    ( ( $true
      = ( in @ sK4 @ ( setadjoin @ sK5 @ emptyset ) ) )
    | ~ spl0_2 ),
    inference(boolean_simplification,[status(thm)],[f540]) ).

thf(f540,plain,
    ( ( ( $true
       => ( in @ sK4 @ ( setadjoin @ sK5 @ emptyset ) ) )
      = $true )
    | ~ spl0_2 ),
    inference(superposition,[status(thm)],[f114,f503]) ).

thf(f503,plain,
    ( ( $true
      = ( sK4 = sK5 ) )
    | ~ spl0_2 ),
    inference(boolean_simplification,[status(thm)],[f502]) ).

thf(f502,plain,
    ( ( ( $true
       => ( sK4 = sK5 ) )
      = $true )
    | ~ spl0_2 ),
    inference(backward_demodulation,[status(thm)],[f457,f495]) ).

thf(f495,plain,
    ( ( $true
      = ( in @ sK5 @ sK3 ) )
    | ~ spl0_2 ),
    inference(boolean_simplification,[status(thm)],[f485]) ).

thf(f485,plain,
    ( ( $true
      = ( $true
       => ( in @ sK5 @ sK3 ) ) )
    | ~ spl0_2 ),
    inference(superposition,[status(thm)],[f68,f435]) ).

thf(f435,plain,
    ( ( ( in @ sK5 @ ( dsetconstr @ sK3 @ sK2 ) )
      = $true )
    | ~ spl0_2 ),
    inference(binary_proxy_clausification,[status(thm)],[f382]) ).

thf(f382,plain,
    ( ( $false
      = ( ( in @ sK5 @ ( dsetconstr @ sK3 @ sK2 ) )
       => ( in @ sK5 @ ( setadjoin @ sK4 @ emptyset ) ) ) )
    | ~ spl0_2 ),
    inference(beta_eta_normalization,[status(thm)],[f376]) ).

thf(f376,plain,
    ( ( $false
      = ( ^ [Y0: $i] :
            ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
           => ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) ) )
        @ sK5 ) )
    | ~ spl0_2 ),
    inference(sigma_clausification,[status(thm)],[f353]) ).

thf(f353,plain,
    ( ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
           => ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) ) ) )
      = $false )
    | ~ spl0_2 ),
    inference(not_proxy_clausification,[status(thm)],[f346]) ).

thf(f346,plain,
    ( ( $true
      = ( ~ ( !! @ $i
            @ ^ [Y0: $i] :
                ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
               => ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) ) ) ) ) )
    | ~ spl0_2 ),
    inference(avatar_component_clause,[status(thm)],[f345]) ).

thf(f345,definition,
    ( spl0_2
  <=> ( $true
      = ( ~ ( !! @ $i
            @ ^ [Y0: $i] :
                ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
               => ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) ) ) ) ) ) ),
    introduced(definition,[new_symbols(naming,[spl0_2])],[avatar_definition]) ).

thf(f68,plain,
    ! [X2: $i,X3: $i > $o,X1: $i] :
      ( ( ( in @ X1 @ ( dsetconstr @ X2 @ X3 ) )
       => ( in @ X1 @ X2 ) )
      = $true ),
    inference(beta_eta_normalization,[status(thm)],[f67]) ).

thf(f67,plain,
    ! [X2: $i,X3: $i > $o,X1: $i] :
      ( ( ^ [Y0: $i > $o] :
            ( ( in @ X1 @ ( dsetconstr @ X2 @ Y0 ) )
           => ( in @ X1 @ X2 ) )
        @ X3 )
      = $true ),
    inference(pi_clausification,[status(thm)],[f66]) ).

thf(f66,plain,
    ! [X2: $i,X1: $i] :
      ( ( !! @ ( $i > $o )
        @ ^ [Y0: $i > $o] :
            ( ( in @ X1 @ ( dsetconstr @ X2 @ Y0 ) )
           => ( in @ X1 @ X2 ) ) )
      = $true ),
    inference(beta_eta_normalization,[status(thm)],[f65]) ).

thf(f65,plain,
    ! [X2: $i,X1: $i] :
      ( $true
      = ( ^ [Y0: $i] :
            ( !! @ ( $i > $o )
            @ ^ [Y1: $i > $o] :
                ( ( in @ X1 @ ( dsetconstr @ Y0 @ Y1 ) )
               => ( in @ X1 @ Y0 ) ) )
        @ X2 ) ),
    inference(pi_clausification,[status(thm)],[f64]) ).

thf(f64,plain,
    ! [X1: $i] :
      ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( !! @ ( $i > $o )
            @ ^ [Y1: $i > $o] :
                ( ( in @ X1 @ ( dsetconstr @ Y0 @ Y1 ) )
               => ( in @ X1 @ Y0 ) ) ) )
      = $true ),
    inference(beta_eta_normalization,[status(thm)],[f63]) ).

thf(f63,plain,
    ! [X1: $i] :
      ( $true
      = ( ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( !! @ ( $i > $o )
                @ ^ [Y2: $i > $o] :
                    ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                   => ( in @ Y0 @ Y1 ) ) ) )
        @ X1 ) ),
    inference(pi_clausification,[status(thm)],[f58]) ).

thf(f58,plain,
    ( ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ ( $i > $o )
              @ ^ [Y2: $i > $o] :
                  ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                 => ( in @ Y0 @ Y1 ) ) ) ) )
    = $true ),
    inference(binary_proxy_clausification,[status(thm)],[f44]) ).

thf(f457,plain,
    ( ( $true
      = ( ( in @ sK5 @ sK3 )
       => ( sK4 = sK5 ) ) )
    | ~ spl0_2 ),
    inference(boolean_simplification,[status(thm)],[f454]) ).

thf(f454,plain,
    ( ( ( ( in @ sK5 @ sK3 )
       => ( $true
         => ( sK4 = sK5 ) ) )
      = $true )
    | ~ spl0_2 ),
    inference(superposition,[status(thm)],[f183,f438]) ).

thf(f438,plain,
    ( ( $true
      = ( sK2 @ sK5 ) )
    | ~ spl0_2 ),
    inference(trivial_inequality_removal,[status(thm)],[f437]) ).

thf(f437,plain,
    ( ( $false = $true )
    | ( $true
      = ( sK2 @ sK5 ) )
    | ~ spl0_2 ),
    inference(boolean_simplification,[status(thm)],[f436]) ).

thf(f436,plain,
    ( ( ( $false
       => ( in @ sK5 @ ( setadjoin @ sK4 @ emptyset ) ) )
      = $false )
    | ( $true
      = ( sK2 @ sK5 ) )
    | ~ spl0_2 ),
    inference(superposition,[status(thm)],[f382,f82]) ).

thf(f82,plain,
    ! [X2: $i,X3: $i > $o,X1: $i] :
      ( ( $false
        = ( in @ X1 @ ( dsetconstr @ X2 @ X3 ) ) )
      | ( $true
        = ( X3 @ X1 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f81]) ).

thf(f81,plain,
    ! [X2: $i,X3: $i > $o,X1: $i] :
      ( ( ( in @ X1 @ ( dsetconstr @ X2 @ X3 ) )
       => ( X3 @ X1 ) )
      = $true ),
    inference(beta_eta_normalization,[status(thm)],[f80]) ).

thf(f80,plain,
    ! [X2: $i,X3: $i > $o,X1: $i] :
      ( $true
      = ( ^ [Y0: $i > $o] :
            ( ( in @ X1 @ ( dsetconstr @ X2 @ Y0 ) )
           => ( Y0 @ X1 ) )
        @ X3 ) ),
    inference(pi_clausification,[status(thm)],[f79]) ).

thf(f79,plain,
    ! [X2: $i,X1: $i] :
      ( ( !! @ ( $i > $o )
        @ ^ [Y0: $i > $o] :
            ( ( in @ X1 @ ( dsetconstr @ X2 @ Y0 ) )
           => ( Y0 @ X1 ) ) )
      = $true ),
    inference(beta_eta_normalization,[status(thm)],[f78]) ).

thf(f78,plain,
    ! [X2: $i,X1: $i] :
      ( ( ^ [Y0: $i] :
            ( !! @ ( $i > $o )
            @ ^ [Y1: $i > $o] :
                ( ( in @ X1 @ ( dsetconstr @ Y0 @ Y1 ) )
               => ( Y1 @ X1 ) ) )
        @ X2 )
      = $true ),
    inference(pi_clausification,[status(thm)],[f77]) ).

thf(f77,plain,
    ! [X1: $i] :
      ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( !! @ ( $i > $o )
            @ ^ [Y1: $i > $o] :
                ( ( in @ X1 @ ( dsetconstr @ Y0 @ Y1 ) )
               => ( Y1 @ X1 ) ) ) )
      = $true ),
    inference(beta_eta_normalization,[status(thm)],[f76]) ).

thf(f76,plain,
    ! [X1: $i] :
      ( $true
      = ( ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( !! @ ( $i > $o )
                @ ^ [Y2: $i > $o] :
                    ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                   => ( Y2 @ Y0 ) ) ) )
        @ X1 ) ),
    inference(pi_clausification,[status(thm)],[f71]) ).

thf(f71,plain,
    ( $true
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( !! @ ( $i > $o )
              @ ^ [Y2: $i > $o] :
                  ( ( in @ Y0 @ ( dsetconstr @ Y1 @ Y2 ) )
                 => ( Y2 @ Y0 ) ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f57]) ).

thf(f183,plain,
    ! [X1: $i] :
      ( ( ( in @ X1 @ sK3 )
       => ( ( sK2 @ X1 )
         => ( sK4 = X1 ) ) )
      = $true ),
    inference(beta_eta_normalization,[status(thm)],[f182]) ).

thf(f182,plain,
    ! [X1: $i] :
      ( ( ^ [Y0: $i] :
            ( ( in @ Y0 @ sK3 )
           => ( ( sK2 @ Y0 )
             => ( sK4 = Y0 ) ) )
        @ X1 )
      = $true ),
    inference(pi_clausification,[status(thm)],[f170]) ).

thf(f170,plain,
    ( $true
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( ( in @ Y0 @ sK3 )
         => ( ( sK2 @ Y0 )
           => ( sK4 = Y0 ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f139]) ).

thf(f139,plain,
    ( $false
    = ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( ( in @ Y0 @ sK3 )
           => ( ( sK2 @ Y0 )
             => ( sK4 = Y0 ) ) ) )
     => ( ?? @ $i
        @ ^ [Y0: $i] :
            ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
            & ( ( setadjoin @ Y0 @ emptyset )
              = ( dsetconstr @ sK3 @ sK2 ) ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f122]) ).

thf(f114,plain,
    ! [X2: $i,X1: $i] :
      ( ( ( X2 = X1 )
       => ( in @ X2 @ ( setadjoin @ X1 @ emptyset ) ) )
      = $true ),
    inference(beta_eta_normalization,[status(thm)],[f113]) ).

thf(f113,plain,
    ! [X2: $i,X1: $i] :
      ( ( ^ [Y0: $i] :
            ( ( Y0 = X1 )
           => ( in @ Y0 @ ( setadjoin @ X1 @ emptyset ) ) )
        @ X2 )
      = $true ),
    inference(pi_clausification,[status(thm)],[f112]) ).

thf(f112,plain,
    ! [X1: $i] :
      ( $true
      = ( !! @ $i
        @ ^ [Y0: $i] :
            ( ( Y0 = X1 )
           => ( in @ Y0 @ ( setadjoin @ X1 @ emptyset ) ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f111]) ).

thf(f111,plain,
    ! [X1: $i] :
      ( $true
      = ( ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( ( Y1 = Y0 )
               => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) )
        @ X1 ) ),
    inference(pi_clausification,[status(thm)],[f106]) ).

thf(f106,plain,
    ( ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( Y1 = Y0 )
             => ( in @ Y1 @ ( setadjoin @ Y0 @ emptyset ) ) ) ) )
    = $true ),
    inference(binary_proxy_clausification,[status(thm)],[f94]) ).

thf(f477,plain,
    ( ( $true
      = ( ~ ( in @ sK4 @ ( setadjoin @ sK5 @ emptyset ) ) ) )
    | ~ spl0_2 ),
    inference(boolean_simplification,[status(thm)],[f465]) ).

thf(f465,plain,
    ( ( ( ( in @ sK4 @ ( setadjoin @ sK5 @ emptyset ) )
       => $false )
      = $true )
    | ~ spl0_2 ),
    inference(superposition,[status(thm)],[f103,f460]) ).

thf(f460,plain,
    ( ( $false
      = ( sK5 = sK4 ) )
    | ~ spl0_2 ),
    inference(not_proxy_clausification,[status(thm)],[f453]) ).

thf(f453,plain,
    ( ( ( sK5 != sK4 )
      = $true )
    | ~ spl0_2 ),
    inference(boolean_simplification,[status(thm)],[f441]) ).

thf(f441,plain,
    ( ( ( ( sK5 = sK4 )
       => $false )
      = $true )
    | ~ spl0_2 ),
    inference(superposition,[status(thm)],[f114,f440]) ).

thf(f440,plain,
    ( ( $false
      = ( in @ sK5 @ ( setadjoin @ sK4 @ emptyset ) ) )
    | ~ spl0_2 ),
    inference(boolean_simplification,[status(thm)],[f439]) ).

thf(f439,plain,
    ( ( ( $true
       => ( in @ sK5 @ ( setadjoin @ sK4 @ emptyset ) ) )
      = $false )
    | ~ spl0_2 ),
    inference(backward_demodulation,[status(thm)],[f382,f435]) ).

thf(f347,plain,
    ( spl0_1
    | spl0_2 ),
    inference(avatar_split_clause,[status(thm)],[f340,f345,f342]) ).

thf(f340,plain,
    ( ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) )
           => ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) ) ) )
      = $false )
    | ( $true
      = ( ~ ( !! @ $i
            @ ^ [Y0: $i] :
                ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
               => ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) ) ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f256]) ).

thf(f256,plain,
    ( ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) )
           => ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) ) ) )
     => ~ ( !! @ $i
          @ ^ [Y0: $i] :
              ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
             => ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) ) ) ) )
    = $true ),
    inference(boolean_simplification,[status(thm)],[f247]) ).

thf(f247,plain,
    ( ( ( !! @ $i
        @ ^ [Y0: $i] :
            ( ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) )
           => ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) ) ) )
     => ( ( !! @ $i
          @ ^ [Y0: $i] :
              ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
             => ( in @ Y0 @ ( setadjoin @ sK4 @ emptyset ) ) ) )
       => $false ) )
    = $true ),
    inference(superposition,[status(thm)],[f92,f242]) ).

thf(f242,plain,
    ( ( ( setadjoin @ sK4 @ emptyset )
      = ( dsetconstr @ sK3 @ sK2 ) )
    = $false ),
    inference(boolean_simplification,[status(thm)],[f241]) ).

thf(f241,plain,
    ( $false
    = ( $true
      & ( ( setadjoin @ sK4 @ emptyset )
        = ( dsetconstr @ sK3 @ sK2 ) ) ) ),
    inference(superposition,[status(thm)],[f220,f150]) ).

thf(f220,plain,
    ! [X1: $i] :
      ( ( ( in @ X1 @ ( dsetconstr @ sK3 @ sK2 ) )
        & ( ( setadjoin @ X1 @ emptyset )
          = ( dsetconstr @ sK3 @ sK2 ) ) )
      = $false ),
    inference(beta_eta_normalization,[status(thm)],[f219]) ).

thf(f219,plain,
    ! [X1: $i] :
      ( ( ^ [Y0: $i] :
            ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
            & ( ( setadjoin @ Y0 @ emptyset )
              = ( dsetconstr @ sK3 @ sK2 ) ) )
        @ X1 )
      = $false ),
    inference(pi_clausification,[status(thm)],[f169]) ).

thf(f169,plain,
    ( $false
    = ( ?? @ $i
      @ ^ [Y0: $i] :
          ( ( in @ Y0 @ ( dsetconstr @ sK3 @ sK2 ) )
          & ( ( setadjoin @ Y0 @ emptyset )
            = ( dsetconstr @ sK3 @ sK2 ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f139]) ).

thf(f92,plain,
    ! [X2: $i,X1: $i] :
      ( $true
      = ( ( !! @ $i
          @ ^ [Y0: $i] :
              ( ( in @ Y0 @ X2 )
             => ( in @ Y0 @ X1 ) ) )
       => ( ( !! @ $i
            @ ^ [Y0: $i] :
                ( ( in @ Y0 @ X1 )
               => ( in @ Y0 @ X2 ) ) )
         => ( X2 = X1 ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f91]) ).

thf(f91,plain,
    ! [X2: $i,X1: $i] :
      ( $true
      = ( ^ [Y0: $i] :
            ( ( !! @ $i
              @ ^ [Y1: $i] :
                  ( ( in @ Y1 @ Y0 )
                 => ( in @ Y1 @ X1 ) ) )
           => ( ( !! @ $i
                @ ^ [Y1: $i] :
                    ( ( in @ Y1 @ X1 )
                   => ( in @ Y1 @ Y0 ) ) )
             => ( Y0 = X1 ) ) )
        @ X2 ) ),
    inference(pi_clausification,[status(thm)],[f90]) ).

thf(f90,plain,
    ! [X1: $i] :
      ( $true
      = ( !! @ $i
        @ ^ [Y0: $i] :
            ( ( !! @ $i
              @ ^ [Y1: $i] :
                  ( ( in @ Y1 @ Y0 )
                 => ( in @ Y1 @ X1 ) ) )
           => ( ( !! @ $i
                @ ^ [Y1: $i] :
                    ( ( in @ Y1 @ X1 )
                   => ( in @ Y1 @ Y0 ) ) )
             => ( Y0 = X1 ) ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f89]) ).

thf(f89,plain,
    ! [X1: $i] :
      ( $true
      = ( ^ [Y0: $i] :
            ( !! @ $i
            @ ^ [Y1: $i] :
                ( ( !! @ $i
                  @ ^ [Y2: $i] :
                      ( ( in @ Y2 @ Y1 )
                     => ( in @ Y2 @ Y0 ) ) )
               => ( ( !! @ $i
                    @ ^ [Y2: $i] :
                        ( ( in @ Y2 @ Y0 )
                       => ( in @ Y2 @ Y1 ) ) )
                 => ( Y1 = Y0 ) ) ) )
        @ X1 ) ),
    inference(pi_clausification,[status(thm)],[f84]) ).

thf(f84,plain,
    ( $true
    = ( !! @ $i
      @ ^ [Y0: $i] :
          ( !! @ $i
          @ ^ [Y1: $i] :
              ( ( !! @ $i
                @ ^ [Y2: $i] :
                    ( ( in @ Y2 @ Y1 )
                   => ( in @ Y2 @ Y0 ) ) )
             => ( ( !! @ $i
                  @ ^ [Y2: $i] :
                      ( ( in @ Y2 @ Y0 )
                     => ( in @ Y2 @ Y1 ) ) )
               => ( Y1 = Y0 ) ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f70]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12  % Problem  : SEU639^2 : TPTP v9.2.1. Released v3.7.0.
% 0.12/0.13  % Command  : /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.16/0.34  % Computer : n022.cluster.edu
% 0.16/0.34  % Model    : x86_64 x86_64
% 0.16/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.16/0.34  % Memory   : 8042.1875MB
% 0.16/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.16/0.34  % CPULimit : 300
% 0.16/0.34  % WCLimit  : 300
% 0.16/0.34  % DateTime : Tue Feb 24 12:29:21 EST 2026
% 0.16/0.34  % CPUTime  : 
% 0.16/0.34  Running /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.28/0.46  ---- Original DTF file ---
% 0.28/0.46  thf(spec,logic,$$dhol).
% 0.28/0.46  %------------------------------------------------------------------------------
% 0.28/0.46  % File     : SEU639^2 : TPTP v9.2.1. Released v3.7.0.
% 0.28/0.46  % Domain   : Set Theory
% 0.28/0.46  % Problem  : Ordered Pairs - Singletons
% 0.28/0.46  % Version  : Especial > Reduced > Especial.
% 0.28/0.46  % English  : (! A:i.! phi:i>o.! x:i.in x A -> phi x -> (! y:i.in y A ->
% 0.28/0.46  %            phi y -> y = x) -> ex1 A (^ y:i.phi y))
% 0.28/0.46  
% 0.28/0.46  % Refs     : [Bro08] Brown (2008), Email to G. Sutcliffe
% 0.28/0.46  % Source   : [Bro08]
% 0.28/0.46  % Names    : ZFC141l [Bro08]
% 0.28/0.46  
% 0.28/0.46  % Status   : Theorem
% 0.28/0.46  % Rating   : 0.33 v9.1.0, 0.38 v9.0.0, 0.50 v8.2.0, 0.54 v8.1.0, 0.45 v7.5.0, 0.57 v7.4.0, 0.44 v7.2.0, 0.38 v7.1.0, 0.50 v7.0.0, 0.57 v6.4.0, 0.67 v6.3.0, 0.80 v6.2.0, 0.57 v6.1.0, 0.86 v6.0.0, 0.57 v5.5.0, 0.67 v5.4.0, 0.80 v5.3.0, 0.60 v5.2.0, 0.80 v4.1.0, 1.00 v3.7.0
% 0.28/0.46  % Syntax   : Number of formulae    :   21 (   8 unt;  12 typ;   8 def)
% 0.28/0.46  %            Number of atoms       :   43 (  13 equ;   0 cnn)
% 0.28/0.46  %            Maximal formula atoms :   10 (   4 avg)
% 0.28/0.46  %            Number of connectives :   76 (   0   ~;   0   |;   1   &;  54   @)
% 0.28/0.46  %                                         (   0 <=>;  21  =>;   0  <=;   0 <~>)
% 0.28/0.46  %            Maximal formula depth :   17 (   3 avg)
% 0.28/0.46  %            Number of types       :    2 (   0 usr)
% 0.28/0.46  %            Number of type conns  :   16 (  16   >;   0   *;   0   +;   0  <<)
% 0.28/0.46  %            Number of symbols     :   13 (  12 usr;   7 con; 0-2 aty)
% 0.28/0.46  %            Number of variables   :   30 (   8   ^;  21   !;   1   ?;  30   :)
% 0.28/0.46  % SPC      : TH0_THM_EQU_NAR
% 0.28/0.46  
% 0.28/0.46  % Comments : http://mathgate.info/detsetitem.php?id=196
% 0.28/0.46  %------------------------------------------------------------------------------
% 0.28/0.46  thf(in_type,type,
% 0.28/0.46      in: $i > $i > $o ).
% 0.28/0.46  
% 0.28/0.46  thf(emptyset_type,type,
% 0.28/0.46      emptyset: $i ).
% 0.28/0.46  
% 0.28/0.46  thf(setadjoin_type,type,
% 0.28/0.46      setadjoin: $i > $i > $i ).
% 0.28/0.46  
% 0.28/0.46  thf(dsetconstr_type,type,
% 0.28/0.46      dsetconstr: $i > ( $i > $o ) > $i ).
% 0.28/0.46  
% 0.28/0.46  thf(dsetconstrI_type,type,
% 0.28/0.46      dsetconstrI: $o ).
% 0.28/0.46  
% 0.28/0.46  thf(dsetconstrI,definition,
% 0.28/0.46      ( dsetconstrI
% 0.28/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.28/0.46            ( ( in @ Xx @ A )
% 0.28/0.46           => ( ( Xphi @ Xx )
% 0.28/0.46             => ( in @ Xx
% 0.28/0.46                @ ( dsetconstr @ A
% 0.28/0.46                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ).
% 0.28/0.46  
% 0.28/0.46  thf(dsetconstrEL_type,type,
% 0.28/0.46      dsetconstrEL: $o ).
% 0.28/0.46  
% 0.28/0.46  thf(dsetconstrEL,definition,
% 0.28/0.46      ( dsetconstrEL
% 0.28/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.28/0.46            ( ( in @ Xx
% 0.28/0.46              @ ( dsetconstr @ A
% 0.28/0.46                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 0.28/0.46           => ( in @ Xx @ A ) ) ) ) ).
% 0.28/0.46  
% 0.28/0.46  thf(dsetconstrER_type,type,
% 0.28/0.46      dsetconstrER: $o ).
% 0.28/0.46  
% 0.28/0.46  thf(dsetconstrER,definition,
% 0.28/0.46      ( dsetconstrER
% 0.28/0.46      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.28/0.46            ( ( in @ Xx
% 0.28/0.46              @ ( dsetconstr @ A
% 0.28/0.46                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 0.28/0.46           => ( Xphi @ Xx ) ) ) ) ).
% 0.28/0.46  
% 0.28/0.46  thf(setext_type,type,
% 0.28/0.46      setext: $o ).
% 0.28/0.46  
% 0.28/0.46  thf(setext,definition,
% 0.28/0.46      ( setext
% 0.28/0.46      = ( ! [A: $i,B: $i] :
% 0.28/0.46            ( ! [Xx: $i] :
% 0.28/0.46                ( ( in @ Xx @ A )
% 0.28/0.46               => ( in @ Xx @ B ) )
% 0.28/0.46           => ( ! [Xx: $i] :
% 0.28/0.46                  ( ( in @ Xx @ B )
% 0.28/0.46                 => ( in @ Xx @ A ) )
% 0.28/0.46             => ( A = B ) ) ) ) ) ).
% 0.28/0.46  
% 0.28/0.46  thf(uniqinunit_type,type,
% 0.28/0.46      uniqinunit: $o ).
% 0.28/0.46  
% 0.28/0.46  thf(uniqinunit,definition,
% 0.28/0.46      ( uniqinunit
% 0.28/0.46      = ( ! [Xx: $i,Xy: $i] :
% 0.28/0.46            ( ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) )
% 0.28/0.46           => ( Xx = Xy ) ) ) ) ).
% 0.28/0.46  
% 0.28/0.46  thf(eqinunit_type,type,
% 0.28/0.46      eqinunit: $o ).
% 0.28/0.46  
% 0.28/0.46  thf(eqinunit,definition,
% 0.28/0.46      ( eqinunit
% 0.28/0.46      = ( ! [Xx: $i,Xy: $i] :
% 0.28/0.46            ( ( Xx = Xy )
% 0.28/0.46           => ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 0.28/0.46  
% 0.28/0.46  thf(singleton_type,type,
% 0.28/0.46      singleton: $i > $o ).
% 0.28/0.46  
% 0.28/0.46  thf(singleton,definition,
% 0.28/0.46      ( singleton
% 0.28/0.46      = ( ^ [A: $i] :
% 0.28/0.46          ? [Xx: $i] :
% 0.28/0.46            ( ( in @ Xx @ A )
% 0.28/0.46            & ( A
% 0.28/0.46              = ( setadjoin @ Xx @ emptyset ) ) ) ) ) ).
% 0.28/0.46  
% 0.28/0.46  thf(ex1_type,type,
% 0.28/0.46      ex1: $i > ( $i > $o ) > $o ).
% 0.28/0.46  
% 0.28/0.46  thf(ex1,definition,
% 0.28/0.46      ( ex1
% 0.28/0.46      = ( ^ [A: $i,Xphi: $i > $o] :
% 0.28/0.46            ( singleton
% 0.28/0.46            @ ( dsetconstr @ A
% 0.28/0.46              @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ).
% 0.28/0.46  
% 0.28/0.46  thf(ex1I,conjecture,
% 0.28/0.46      ( dsetconstrI
% 0.28/0.46     => ( dsetconstrEL
% 0.28/0.46       => ( dsetconstrER
% 0.28/0.46         => ( setext
% 0.28/0.46           => ( uniqinunit
% 0.28/0.46             => ( eqinunit
% 0.28/0.46               => ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 0.28/0.46                    ( ( in @ Xx @ A )
% 0.28/0.46                   => ( ( Xphi @ Xx )
% 0.28/0.46                     => ( ! [Xy: $i] :
% 0.28/0.46                            ( ( in @ Xy @ A )
% 0.28/0.46                           => ( ( Xphi @ Xy )
% 0.28/0.46                             => ( Xy = Xx ) ) )
% 0.28/0.46                       => ( ex1 @ A
% 0.28/0.46                          @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ) ) ) ) ).
% 0.28/0.46  
% 0.28/0.46  %------------------------------------------------------------------------------
% 0.28/0.46  ------------------------
% 1.70/1.36  ---- Embedded in THF ---
% 1.70/1.36  %%% This output was generated by embedproblem, version 1.9.5 (library version 1.9).
% 1.70/1.36  %%% Generated on Tue Feb 24 12:29:22 EST 2026
% 1.70/1.36  %%% using '$$dhol' embedding, version 1.3.0.
% 1.70/1.36  %%% Logic specification used:
% 1.70/1.36  %%% thf(spec, logic, $$dhol).
% 1.70/1.36  
% 1.70/1.36  % SZS output start ListOfTHF for /export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2DTF11842.p
% See solution above
% 1.70/1.36  ------------------------
% 1.70/1.37  ---- Cleaned THF ---
% 1.70/1.37  thf(in_type,type,
% 1.70/1.37      in: $i > $i > $o ).
% 1.70/1.37  
% 1.70/1.37  thf(emptyset_type,type,
% 1.70/1.37      emptyset: $i ).
% 1.70/1.37  
% 1.70/1.37  thf(setadjoin_type,type,
% 1.70/1.37      setadjoin: $i > $i > $i ).
% 1.70/1.37  
% 1.70/1.37  thf(dsetconstr_type,type,
% 1.70/1.37      dsetconstr: $i > ( $i > $o ) > $i ).
% 1.70/1.37  
% 1.70/1.37  thf(dsetconstrI_type,type,
% 1.70/1.37      dsetconstrI: $o ).
% 1.70/1.37  
% 1.70/1.37  thf(dsetconstrI,definition,
% 1.70/1.37      ( dsetconstrI
% 1.70/1.37      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 1.70/1.37            ( ( in @ Xx @ A )
% 1.70/1.37           => ( ( Xphi @ Xx )
% 1.70/1.37             => ( in @ Xx
% 1.70/1.37                @ ( dsetconstr @ A
% 1.70/1.37                  @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ).
% 1.70/1.37  
% 1.70/1.37  thf(dsetconstrEL_type,type,
% 1.70/1.37      dsetconstrEL: $o ).
% 1.70/1.37  
% 1.70/1.37  thf(dsetconstrEL,definition,
% 1.70/1.37      ( dsetconstrEL
% 1.70/1.37      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 1.70/1.37            ( ( in @ Xx
% 1.70/1.37              @ ( dsetconstr @ A
% 1.70/1.37                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 1.70/1.37           => ( in @ Xx @ A ) ) ) ) ).
% 1.70/1.37  
% 1.70/1.37  thf(dsetconstrER_type,type,
% 1.70/1.37      dsetconstrER: $o ).
% 1.70/1.37  
% 1.70/1.37  thf(dsetconstrER,definition,
% 1.70/1.37      ( dsetconstrER
% 1.70/1.37      = ( ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 1.70/1.37            ( ( in @ Xx
% 1.70/1.37              @ ( dsetconstr @ A
% 1.70/1.37                @ ^ [Xy: $i] : ( Xphi @ Xy ) ) )
% 1.70/1.37           => ( Xphi @ Xx ) ) ) ) ).
% 1.70/1.37  
% 1.70/1.37  thf(setext_type,type,
% 1.70/1.37      setext: $o ).
% 1.70/1.37  
% 1.70/1.37  thf(setext,definition,
% 1.70/1.37      ( setext
% 1.70/1.37      = ( ! [A: $i,B: $i] :
% 1.70/1.37            ( ! [Xx: $i] :
% 1.70/1.37                ( ( in @ Xx @ A )
% 1.70/1.37               => ( in @ Xx @ B ) )
% 1.70/1.37           => ( ! [Xx: $i] :
% 1.70/1.37                  ( ( in @ Xx @ B )
% 1.70/1.37                 => ( in @ Xx @ A ) )
% 1.70/1.37             => ( A = B ) ) ) ) ) ).
% 1.70/1.37  
% 1.70/1.37  thf(uniqinunit_type,type,
% 1.70/1.37      uniqinunit: $o ).
% 1.70/1.37  
% 1.70/1.37  thf(uniqinunit,definition,
% 1.70/1.37      ( uniqinunit
% 1.70/1.37      = ( ! [Xx: $i,Xy: $i] :
% 1.70/1.37            ( ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) )
% 1.70/1.37           => ( Xx = Xy ) ) ) ) ).
% 1.70/1.37  
% 1.70/1.37  thf(eqinunit_type,type,
% 1.70/1.37      eqinunit: $o ).
% 1.70/1.37  
% 1.70/1.37  thf(eqinunit,definition,
% 1.70/1.37      ( eqinunit
% 1.70/1.37      = ( ! [Xx: $i,Xy: $i] :
% 1.70/1.37            ( ( Xx = Xy )
% 1.70/1.37           => ( in @ Xx @ ( setadjoin @ Xy @ emptyset ) ) ) ) ) ).
% 1.70/1.37  
% 1.70/1.37  thf(singleton_type,type,
% 1.70/1.37      singleton: $i > $o ).
% 1.70/1.37  
% 1.70/1.37  thf(singleton,definition,
% 1.70/1.37      ( singleton
% 1.70/1.37      = ( ^ [A: $i] :
% 1.70/1.37          ? [Xx: $i] :
% 1.70/1.37            ( ( in @ Xx @ A )
% 1.70/1.37            & ( A
% 1.70/1.37              = ( setadjoin @ Xx @ emptyset ) ) ) ) ) ).
% 1.70/1.37  
% 1.70/1.37  thf(ex1_type,type,
% 1.70/1.37      ex1: $i > ( $i > $o ) > $o ).
% 1.70/1.37  
% 1.70/1.37  thf(ex1,definition,
% 1.70/1.37      ( ex1
% 1.70/1.37      = ( ^ [A: $i,Xphi: $i > $o] :
% 1.70/1.37            ( singleton
% 1.70/1.37            @ ( dsetconstr @ A
% 1.70/1.37              @ ^ [Xx: $i] : ( Xphi @ Xx ) ) ) ) ) ).
% 1.70/1.37  
% 1.70/1.37  thf(ex1I,conjecture,
% 1.70/1.37      ( dsetconstrI
% 1.70/1.37     => ( dsetconstrEL
% 1.70/1.37       => ( dsetconstrER
% 1.70/1.37         => ( setext
% 1.70/1.37           => ( uniqinunit
% 1.70/1.37             => ( eqinunit
% 1.70/1.37               => ! [A: $i,Xphi: $i > $o,Xx: $i] :
% 1.70/1.37                    ( ( in @ Xx @ A )
% 1.70/1.37                   => ( ( Xphi @ Xx )
% 1.70/1.37                     => ( ! [Xy: $i] :
% 1.70/1.37                            ( ( in @ Xy @ A )
% 1.70/1.37                           => ( ( Xphi @ Xy )
% 1.70/1.37                             => ( Xy = Xx ) ) )
% 1.70/1.37                       => ( ex1 @ A
% 1.70/1.37                          @ ^ [Xy: $i] : ( Xphi @ Xy ) ) ) ) ) ) ) ) ) ) ) ).
% 1.70/1.37  ------------------------
% 1.70/1.39  % (12119)lrs+10_1:1_c=on:cnfonf=conj_eager:fd=off:fe=off:kws=frequency:spb=intro:i=4:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/4Mi)
% 1.70/1.39  % (12120)dis+1010_1:1_au=on:cbe=off:chr=on:fsr=off:hfsq=on:nm=64:sos=theory:sp=weighted_frequency:i=27:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/27Mi)
% 1.70/1.39  % (12119)Instruction limit reached!
% 1.70/1.39  % (12119)------------------------------
% 1.70/1.39  % (12119)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.70/1.39  % (12119)Termination reason: Unknown
% 1.70/1.39  % (12119)Termination phase: Saturation
% 1.70/1.39  
% 1.70/1.39  % (12119)Memory used [KB]: 5500
% 1.70/1.39  % (12119)Time elapsed: 0.003 s
% 1.70/1.39  % (12119)Instructions burned: 5 (million)
% 1.70/1.39  % (12119)------------------------------
% 1.70/1.39  % (12119)------------------------------
% 1.70/1.39  % (12118)lrs+1002_1:8_bd=off:fd=off:hud=10:tnu=1:i=183:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/183Mi)
% 1.70/1.39  % (12121)lrs+10_1:1_au=on:inj=on:i=2:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/2Mi)
% 1.70/1.39  % (12122)lrs+1002_1:128_aac=none:au=on:cnfonf=lazy_not_gen_be_off:sos=all:i=2:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/2Mi)
% 1.70/1.40  % (12124)lrs+1004_1:128_cond=on:e2e=on:sp=weighted_frequency:i=18:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/18Mi)
% 1.70/1.40  % (12123)lrs+1002_1:1_au=on:bd=off:e2e=on:sd=2:sos=on:ss=axioms:i=275:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/275Mi)
% 1.70/1.40  % (12121)Instruction limit reached!
% 1.70/1.40  % (12121)------------------------------
% 1.70/1.40  % (12121)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.70/1.40  % (12121)Termination reason: Unknown
% 1.70/1.40  % (12121)Termination phase: shuffling
% 1.70/1.40  
% 1.70/1.40  % (12121)Memory used [KB]: 1023
% 1.70/1.40  % (12121)Time elapsed: 0.003 s
% 1.70/1.40  % (12121)Instructions burned: 2 (million)
% 1.70/1.40  % (12121)------------------------------
% 1.70/1.40  % (12121)------------------------------
% 1.70/1.40  % (12122)Instruction limit reached!
% 1.70/1.40  % (12122)------------------------------
% 1.70/1.40  % (12122)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.70/1.40  % (12122)Termination reason: Unknown
% 1.70/1.40  % (12122)Termination phase: shuffling
% 1.70/1.40  
% 1.70/1.40  % (12122)Memory used [KB]: 1023
% 1.70/1.40  % (12122)Time elapsed: 0.003 s
% 1.70/1.40  % (12122)Instructions burned: 2 (million)
% 1.70/1.40  % (12122)------------------------------
% 1.70/1.40  % (12122)------------------------------
% 1.84/1.40  % (12120)Instruction limit reached!
% 1.84/1.40  % (12120)------------------------------
% 1.84/1.40  % (12120)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.40  % (12120)Termination reason: Unknown
% 1.84/1.40  % (12120)Termination phase: Saturation
% 1.84/1.40  
% 1.84/1.40  % (12120)Memory used [KB]: 5628
% 1.84/1.40  % (12120)Time elapsed: 0.011 s
% 1.84/1.40  % (12120)Instructions burned: 28 (million)
% 1.84/1.40  % (12120)------------------------------
% 1.84/1.40  % (12120)------------------------------
% 1.84/1.40  % (12125)lrs+10_1:1_bet=on:cnfonf=off:fd=off:hud=5:inj=on:i=3:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/3Mi)
% 1.84/1.40  % (12125)Instruction limit reached!
% 1.84/1.40  % (12125)------------------------------
% 1.84/1.40  % (12125)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.40  % (12125)Termination reason: Unknown
% 1.84/1.40  % (12125)Termination phase: Property scanning
% 1.84/1.40  
% 1.84/1.40  % (12125)Memory used [KB]: 1023
% 1.84/1.40  % (12125)Time elapsed: 0.003 s
% 1.84/1.40  % (12125)Instructions burned: 4 (million)
% 1.84/1.40  % (12125)------------------------------
% 1.84/1.40  % (12125)------------------------------
% 1.84/1.41  % (12124)Instruction limit reached!
% 1.84/1.41  % (12124)------------------------------
% 1.84/1.41  % (12124)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.41  % (12124)Termination reason: Unknown
% 1.84/1.41  % (12124)Termination phase: Saturation
% 1.84/1.41  
% 1.84/1.41  % (12124)Memory used [KB]: 5628
% 1.84/1.41  % (12124)Time elapsed: 0.014 s
% 1.84/1.41  % (12124)Instructions burned: 19 (million)
% 1.84/1.41  % (12124)------------------------------
% 1.84/1.41  % (12124)------------------------------
% 1.84/1.41  % (12128)dis+21_1:1_cbe=off:cnfonf=off:fs=off:fsr=off:hud=1:inj=on:i=3:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/3Mi)
% 1.84/1.41  % (12128)Instruction limit reached!
% 1.84/1.41  % (12128)------------------------------
% 1.84/1.41  % (12128)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.41  % (12128)Termination reason: Unknown
% 1.84/1.41  % (12128)Termination phase: Property scanning
% 1.84/1.41  
% 1.84/1.41  % (12128)Memory used [KB]: 1023
% 1.84/1.41  % (12128)Time elapsed: 0.003 s
% 1.84/1.41  % (12128)Instructions burned: 4 (million)
% 1.84/1.41  % (12128)------------------------------
% 1.84/1.41  % (12128)------------------------------
% 1.84/1.41  % (12129)lrs+1002_1:1_aac=none:au=on:cnfonf=lazy_gen:plsq=on:plsqc=1:plsqr=4203469,65536:i=1041:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/1041Mi)
% 1.84/1.41  % (12126)lrs+1002_1:1_cnfonf=lazy_not_be_gen:hud=14:prag=on:sp=weighted_frequency:tnu=1:i=37:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/37Mi)
% 1.84/1.41  % (12127)lrs+2_16:1_acc=model:au=on:bd=off:c=on:e2e=on:nm=2:sos=all:i=15:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/15Mi)
% 1.84/1.42  % (12131)lrs+10_1:1_acc=on:amm=sco:cs=on:tgt=full:i=16:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/16Mi)
% 1.84/1.42  % (12127)Instruction limit reached!
% 1.84/1.42  % (12127)------------------------------
% 1.84/1.42  % (12127)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.42  % (12127)Termination reason: Unknown
% 1.84/1.42  % (12127)Termination phase: Saturation
% 1.84/1.42  
% 1.84/1.42  % (12127)Memory used [KB]: 5628
% 1.84/1.42  % (12127)Time elapsed: 0.012 s
% 1.84/1.42  % (12127)Instructions burned: 15 (million)
% 1.84/1.42  % (12127)------------------------------
% 1.84/1.42  % (12127)------------------------------
% 1.84/1.42  % (12130)lrs+10_1:1_av=off:chr=on:plsq=on:slsq=on:i=7:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/7Mi)
% 1.84/1.43  % (12131)Instruction limit reached!
% 1.84/1.43  % (12131)------------------------------
% 1.84/1.43  % (12131)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.43  % (12131)Termination reason: Unknown
% 1.84/1.43  % (12131)Termination phase: Saturation
% 1.84/1.43  
% 1.84/1.43  % (12131)Memory used [KB]: 5884
% 1.84/1.43  % (12131)Time elapsed: 0.008 s
% 1.84/1.43  % (12131)Instructions burned: 17 (million)
% 1.84/1.43  % (12131)------------------------------
% 1.84/1.43  % (12131)------------------------------
% 1.84/1.43  % (12130)Instruction limit reached!
% 1.84/1.43  % (12130)------------------------------
% 1.84/1.43  % (12130)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.43  % (12130)Termination reason: Unknown
% 1.84/1.43  % (12130)Termination phase: Saturation
% 1.84/1.43  
% 1.84/1.43  % (12130)Memory used [KB]: 1023
% 1.84/1.43  % (12130)Time elapsed: 0.006 s
% 1.84/1.43  % (12130)Instructions burned: 8 (million)
% 1.84/1.43  % (12130)------------------------------
% 1.84/1.43  % (12130)------------------------------
% 1.84/1.44  % (12126)Instruction limit reached!
% 1.84/1.44  % (12126)------------------------------
% 1.84/1.44  % (12126)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.44  % (12126)Termination reason: Unknown
% 1.84/1.44  % (12126)Termination phase: Saturation
% 1.84/1.44  
% 1.84/1.44  % (12126)Memory used [KB]: 5756
% 1.84/1.44  % (12126)Time elapsed: 0.024 s
% 1.84/1.44  % (12126)Instructions burned: 38 (million)
% 1.84/1.44  % (12126)------------------------------
% 1.84/1.44  % (12126)------------------------------
% 1.84/1.44  % (12133)lrs+2_1:1_apa=on:au=on:bd=preordered:cnfonf=off:cs=on:ixr=off:sos=on:i=3:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/3Mi)
% 1.84/1.44  % (12133)Instruction limit reached!
% 1.84/1.44  % (12133)------------------------------
% 1.84/1.44  % (12133)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.44  % (12133)Termination reason: Unknown
% 1.84/1.44  % (12133)Termination phase: Function definition elimination
% 1.84/1.44  
% 1.84/1.44  % (12133)Memory used [KB]: 1023
% 1.84/1.44  % (12133)Time elapsed: 0.003 s
% 1.84/1.44  % (12133)Instructions burned: 4 (million)
% 1.84/1.44  % (12133)------------------------------
% 1.84/1.44  % (12133)------------------------------
% 1.84/1.44  % (12132)lrs+21_1:1_au=on:cnfonf=off:fd=preordered:fe=off:fsr=off:hud=11:inj=on:kws=precedence:s2pl=no:sp=weighted_frequency:tgt=full:i=3:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/3Mi)
% 1.84/1.44  % (12132)Instruction limit reached!
% 1.84/1.44  % (12132)------------------------------
% 1.84/1.44  % (12132)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.44  % (12132)Termination reason: Unknown
% 1.84/1.44  % (12132)Termination phase: Property scanning
% 1.84/1.44  
% 1.84/1.44  % (12132)Memory used [KB]: 1023
% 1.84/1.44  % (12132)Time elapsed: 0.004 s
% 1.84/1.44  % (12132)Instructions burned: 4 (million)
% 1.84/1.44  % (12132)------------------------------
% 1.84/1.44  % (12132)------------------------------
% 1.84/1.45  % (12134)lrs+10_1:1_cnfonf=off:cs=on:hud=3:prag=on:sup=off:i=7:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/7Mi)
% 1.84/1.45  % (12136)dis+1004_1:1_cha=on:cs=on:fe=off:hud=1:i=4:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/4Mi)
% 1.84/1.45  % (12136)Instruction limit reached!
% 1.84/1.45  % (12136)------------------------------
% 1.84/1.45  % (12136)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.45  % (12136)Termination reason: Unknown
% 1.84/1.45  % (12136)Termination phase: Property scanning
% 1.84/1.45  
% 1.84/1.45  % (12136)Memory used [KB]: 1023
% 1.84/1.45  % (12136)Time elapsed: 0.003 s
% 1.84/1.45  % (12136)Instructions burned: 5 (million)
% 1.84/1.45  % (12136)------------------------------
% 1.84/1.45  % (12136)------------------------------
% 1.84/1.45  % (12134)Refutation not found, incomplete strategy
% 1.84/1.45  % (12134)------------------------------
% 1.84/1.45  % (12134)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.45  % (12134)Termination reason: Refutation not found, incomplete strategy
% 1.84/1.45  
% 1.84/1.45  
% 1.84/1.45  % (12134)Memory used [KB]: 5500
% 1.84/1.45  % (12134)Time elapsed: 0.005 s
% 1.84/1.45  % (12134)Instructions burned: 6 (million)
% 1.84/1.45  % (12134)------------------------------
% 1.84/1.45  % (12134)------------------------------
% 1.84/1.45  % (12135)dis+1002_1:1_add=large:cnfonf=lazy_pi_sigma_gen:fe=off:prag=on:i=3:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/3Mi)
% 1.84/1.45  % (12135)Instruction limit reached!
% 1.84/1.45  % (12135)------------------------------
% 1.84/1.45  % (12135)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.45  % (12135)Termination reason: Unknown
% 1.84/1.45  % (12135)Termination phase: Property scanning
% 1.84/1.45  
% 1.84/1.45  % (12135)Memory used [KB]: 1023
% 1.84/1.45  % (12135)Time elapsed: 0.003 s
% 1.84/1.45  % (12135)Instructions burned: 3 (million)
% 1.84/1.45  % (12135)------------------------------
% 1.84/1.45  % (12135)------------------------------
% 1.84/1.45  % (12137)lrs+1002_1:1_anc=all_dependent:au=on:cbe=off:fde=unused:ntd=on:i=18:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/18Mi)
% 1.84/1.46  % (12138)lrs+10_1:1_e2e=on:sd=1:sgt=8:ss=axioms:i=710:si=on:rtra=on_0 on DTF2THF_11842 for (2999ds/710Mi)
% 1.84/1.46  % (12129)First to succeed.
% 1.84/1.46  % (12137)Instruction limit reached!
% 1.84/1.46  % (12137)------------------------------
% 1.84/1.46  % (12137)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.46  % (12137)Termination reason: Unknown
% 1.84/1.46  % (12137)Termination phase: Saturation
% 1.84/1.46  
% 1.84/1.46  % (12137)Memory used [KB]: 5628
% 1.84/1.46  % (12137)Time elapsed: 0.008 s
% 1.84/1.46  % (12137)Instructions burned: 18 (million)
% 1.84/1.46  % (12137)------------------------------
% 1.84/1.46  % (12137)------------------------------
% 1.84/1.46  % (12129)Refutation found. Thanks to Tanya!
% 1.84/1.46  % SZS status Theorem for DTF2THF_11842
% 1.84/1.46  % SZS output start Proof for DTF2THF_11842
% 1.84/1.46  thf(func_def_0, type, in: $i > $i > $o).
% 1.84/1.46  thf(func_def_2, type, setadjoin: $i > $i > $i).
% 1.84/1.46  thf(func_def_3, type, dsetconstr: $i > ($i > $o) > $i).
% 1.84/1.46  thf(func_def_11, type, singleton: $i > $o).
% 1.84/1.46  thf(func_def_12, type, ex1: $i > ($i > $o) > $o).
% 1.84/1.46  thf(func_def_29, type, ph1: !>[X0: $tType]:(X0)).
% 1.84/1.46  thf(func_def_30, type, sK2: $i > $o).
% 1.84/1.46  thf(f625,plain,(
% 1.84/1.46    $false),
% 1.84/1.46    inference(avatar_sat_refutation,[status(thm)],[f347,f558,f622])).
% 1.84/1.46  thf(f622,plain,(
% 1.84/1.46    ~spl0_1),
% 1.84/1.46    inference(avatar_contradiction_clause,[status(thm)],[f621])).
% 1.84/1.46  thf(f621,plain,(
% 1.84/1.46    $false | ~spl0_1),
% 1.84/1.46    inference(trivial_inequality_removal,[status(thm)],[f620])).
% 1.84/1.46  thf(f620,plain,(
% 1.84/1.46    ($false = $true) | ~spl0_1),
% 1.84/1.46    inference(backward_demodulation,[status(thm)],[f150,f618])).
% 1.84/1.46  thf(f618,plain,(
% 1.84/1.46    ($false = (in @ sK4 @ (dsetconstr @ sK3 @ sK2))) | ~spl0_1),
% 1.84/1.46    inference(backward_demodulation,[status(thm)],[f571,f599])).
% 1.84/1.46  thf(f599,plain,(
% 1.84/1.46    (sK6 = sK4) | ~spl0_1),
% 1.84/1.46    inference(equality_proxy_clausification,[status(thm)],[f598])).
% 1.84/1.46  thf(f598,plain,(
% 1.84/1.46    ((sK4 = sK6) = $true) | ~spl0_1),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f588])).
% 1.84/1.46  thf(f588,plain,(
% 1.84/1.46    (($true => (sK4 = sK6)) = $true) | ~spl0_1),
% 1.84/1.46    inference(superposition,[status(thm)],[f103,f572])).
% 1.84/1.46  thf(f572,plain,(
% 1.84/1.46    ($true = (in @ sK6 @ (setadjoin @ sK4 @ emptyset))) | ~spl0_1),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f569])).
% 1.84/1.46  thf(f569,plain,(
% 1.84/1.46    (((in @ sK6 @ (setadjoin @ sK4 @ emptyset)) => (in @ sK6 @ (dsetconstr @ sK3 @ sK2))) = $false) | ~spl0_1),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f564])).
% 1.84/1.46  thf(f564,plain,(
% 1.84/1.46    (((^[Y0 : $i]: ((in @ Y0 @ (setadjoin @ sK4 @ emptyset)) => (in @ Y0 @ (dsetconstr @ sK3 @ sK2)))) @ sK6) = $false) | ~spl0_1),
% 1.84/1.46    inference(sigma_clausification,[status(thm)],[f343])).
% 1.84/1.46  thf(f343,plain,(
% 1.84/1.46    ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (setadjoin @ sK4 @ emptyset)) => (in @ Y0 @ (dsetconstr @ sK3 @ sK2))))) = $false) | ~spl0_1),
% 1.84/1.46    inference(avatar_component_clause,[status(thm)],[f342])).
% 1.84/1.46  thf(f342,definition,(
% 1.84/1.46    spl0_1 <=> ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (setadjoin @ sK4 @ emptyset)) => (in @ Y0 @ (dsetconstr @ sK3 @ sK2))))) = $false)),
% 1.84/1.46    introduced(definition,[new_symbols(naming,[spl0_1])],[avatar_definition])).
% 1.84/1.46  thf(f103,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : (($true = ((in @ X1 @ (setadjoin @ X2 @ emptyset)) => (X2 = X1)))) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f102])).
% 1.84/1.46  thf(f102,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : ((((^[Y0 : $i]: ((in @ X1 @ (setadjoin @ Y0 @ emptyset)) => (Y0 = X1))) @ X2) = $true)) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f101])).
% 1.84/1.46  thf(f101,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (($true = (!! @ $i @ (^[Y0 : $i]: ((in @ X1 @ (setadjoin @ Y0 @ emptyset)) => (Y0 = X1)))))) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f100])).
% 1.84/1.46  thf(f100,plain,(
% 1.84/1.46    ( ! [X1 : $i] : ((((^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0))))) @ X1) = $true)) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f95])).
% 1.84/1.46  thf(f95,plain,(
% 1.84/1.46    ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0)))))) = $true)),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f83])).
% 1.84/1.46  thf(f83,plain,(
% 1.84/1.46    ($false = ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0)))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))) => (!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (?? @ $i @ (^[Y3 : $i]: ((in @ Y3 @ (dsetconstr @ Y1 @ Y0)) & ((setadjoin @ Y3 @ emptyset) = (dsetconstr @ Y1 @ Y0)))))))))))))))))),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f70])).
% 1.84/1.46  thf(f70,plain,(
% 1.84/1.46    ($false = ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => (in @ Y2 @ Y0)))) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => (in @ Y2 @ Y1)))) => (Y1 = Y0))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0)))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))) => (!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (?? @ $i @ (^[Y3 : $i]: ((in @ Y3 @ (dsetconstr @ Y1 @ Y0)) & ((setadjoin @ Y3 @ emptyset) = (dsetconstr @ Y1 @ Y0))))))))))))))))))),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f57])).
% 1.84/1.46  thf(f57,plain,(
% 1.84/1.46    ($false = ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (Y2 @ Y0)))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => (in @ Y2 @ Y0)))) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => (in @ Y2 @ Y1)))) => (Y1 = Y0))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0)))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))) => (!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (?? @ $i @ (^[Y3 : $i]: ((in @ Y3 @ (dsetconstr @ Y1 @ Y0)) & ((setadjoin @ Y3 @ emptyset) = (dsetconstr @ Y1 @ Y0)))))))))))))))))))),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f44])).
% 1.84/1.46  thf(f44,plain,(
% 1.84/1.46    (((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (in @ Y0 @ Y1)))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (Y2 @ Y0)))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => (in @ Y2 @ Y0)))) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => (in @ Y2 @ Y1)))) => (Y1 = Y0))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0)))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))) => (!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (?? @ $i @ (^[Y3 : $i]: ((in @ Y3 @ (dsetconstr @ Y1 @ Y0)) & ((setadjoin @ Y3 @ emptyset) = (dsetconstr @ Y1 @ Y0))))))))))))))))))) = $false)),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f41])).
% 1.84/1.46  thf(f41,plain,(
% 1.84/1.46    (((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y1 @ Y0) => ((Y2 @ Y1) => (in @ Y1 @ (dsetconstr @ Y0 @ Y2)))))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (in @ Y0 @ Y1)))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (Y2 @ Y0)))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => (in @ Y2 @ Y0)))) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => (in @ Y2 @ Y1)))) => (Y1 = Y0))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0)))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))) => (!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (?? @ $i @ (^[Y3 : $i]: ((in @ Y3 @ (dsetconstr @ Y1 @ Y0)) & ((setadjoin @ Y3 @ emptyset) = (dsetconstr @ Y1 @ Y0)))))))))))))))))))) = $false)),
% 1.84/1.46    inference(not_proxy_clausification,[status(thm)],[f40])).
% 1.84/1.46  thf(f40,plain,(
% 1.84/1.46    ((~ ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y1 @ Y0) => ((Y2 @ Y1) => (in @ Y1 @ (dsetconstr @ Y0 @ Y2)))))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (in @ Y0 @ Y1)))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (Y2 @ Y0)))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => (in @ Y2 @ Y0)))) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => (in @ Y2 @ Y1)))) => (Y1 = Y0))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0)))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))) => (!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (?? @ $i @ (^[Y3 : $i]: ((in @ Y3 @ (dsetconstr @ Y1 @ Y0)) & ((setadjoin @ Y3 @ emptyset) = (dsetconstr @ Y1 @ Y0))))))))))))))))))))) = $true)),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f39])).
% 1.84/1.46  thf(f39,plain,(
% 1.84/1.46    ($true = (~ ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y1 @ Y0) => ((Y2 @ Y1) => (in @ Y1 @ (dsetconstr @ Y0 @ (^[Y3 : $i]: (Y2 @ Y3)))))))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ (^[Y3 : $i]: (Y2 @ Y3)))) => (in @ Y0 @ Y1)))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ (^[Y3 : $i]: (Y2 @ Y3)))) => (Y2 @ Y0)))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => (in @ Y2 @ Y0)))) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => (in @ Y2 @ Y1)))) => (Y1 = Y0))))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0)))))) => ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))) => (!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => ((^[Y3 : $i]: ((^[Y4 : $i > $o]: ((^[Y5 : $i]: (?? @ $i @ (^[Y6 : $i]: ((in @ Y6 @ Y5) & ((setadjoin @ Y6 @ emptyset) = Y5))))) @ (dsetconstr @ Y3 @ (^[Y5 : $i]: (Y4 @ Y5))))))) @ Y1 @ (^[Y3 : $i]: (Y0 @ Y3))))))))))))))))))))),
% 1.84/1.46    inference(definition_unfolding,[status(thm)],[f34,f37,f33,f35,f30,f31,f32,f38])).
% 1.84/1.46  thf(f38,plain,(
% 1.84/1.46    (ex1 = (^[Y0 : $i]: ((^[Y1 : $i > $o]: ((^[Y2 : $i]: (?? @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y2) & ((setadjoin @ Y3 @ emptyset) = Y2))))) @ (dsetconstr @ Y0 @ (^[Y2 : $i]: (Y1 @ Y2))))))))),
% 1.84/1.46    inference(definition_unfolding,[status(thm)],[f29,f36])).
% 1.84/1.46  thf(f36,plain,(
% 1.84/1.46    (singleton = (^[Y0 : $i]: (?? @ $i @ (^[Y1 : $i]: ((in @ Y1 @ Y0) & ((setadjoin @ Y1 @ emptyset) = Y0))))))),
% 1.84/1.46    inference(cnf_transformation,[status(thm)],[f27])).
% 1.84/1.46  thf(f27,plain,(
% 1.84/1.46    (singleton = (^[Y0 : $i]: (?? @ $i @ (^[Y1 : $i]: ((in @ Y1 @ Y0) & ((setadjoin @ Y1 @ emptyset) = Y0))))))),
% 1.84/1.46    inference(fool_elimination,[status(thm)],[f26])).
% 1.84/1.46  thf(f26,plain,(
% 1.84/1.46    ((^[X0 : $i] : (? [X1 : $i] : (((setadjoin @ X1 @ emptyset) = X0) & (in @ X1 @ X0)))) = singleton)),
% 1.84/1.46    inference(rectify,[status(thm)],[f7])).
% 1.84/1.46  thf(f7,axiom,(
% 1.84/1.46    ((^[X0 : $i] : (? [X2 : $i] : (((setadjoin @ X2 @ emptyset) = X0) & (in @ X2 @ X0)))) = singleton)),
% 1.84/1.46    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',singleton)).
% 1.84/1.46  thf(f29,plain,(
% 1.84/1.46    (ex1 = (^[Y0 : $i]: ((^[Y1 : $i > $o]: (singleton @ (dsetconstr @ Y0 @ (^[Y2 : $i]: (Y1 @ Y2))))))))),
% 1.84/1.46    inference(cnf_transformation,[status(thm)],[f28])).
% 1.84/1.46  thf(f28,plain,(
% 1.84/1.46    (ex1 = (^[Y0 : $i]: ((^[Y1 : $i > $o]: (singleton @ (dsetconstr @ Y0 @ (^[Y2 : $i]: (Y1 @ Y2))))))))),
% 1.84/1.46    inference(fool_elimination,[status(thm)],[f8])).
% 1.84/1.46  thf(f8,axiom,(
% 1.84/1.46    (ex1 = (^[X0 : $i, X1 : $i > $o] : (singleton @ (dsetconstr @ X0 @ (^[X2 : $i] : (X1 @ X2))))))),
% 1.84/1.46    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',ex1)).
% 1.84/1.46  thf(f32,plain,(
% 1.84/1.46    (eqinunit = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))))),
% 1.84/1.46    inference(cnf_transformation,[status(thm)],[f13])).
% 1.84/1.46  thf(f13,plain,(
% 1.84/1.46    (eqinunit = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))))),
% 1.84/1.46    inference(fool_elimination,[status(thm)],[f12])).
% 1.84/1.46  thf(f12,plain,(
% 1.84/1.46    (! [X0 : $i,X1 : $i] : ((X0 = X1) => (in @ X0 @ (setadjoin @ X1 @ emptyset))) = eqinunit)),
% 1.84/1.46    inference(rectify,[status(thm)],[f6])).
% 1.84/1.46  thf(f6,axiom,(
% 1.84/1.46    (! [X2 : $i,X3 : $i] : ((X2 = X3) => (in @ X2 @ (setadjoin @ X3 @ emptyset))) = eqinunit)),
% 1.84/1.46    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',eqinunit)).
% 1.84/1.46  thf(f31,plain,(
% 1.84/1.46    (uniqinunit = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0)))))))),
% 1.84/1.46    inference(cnf_transformation,[status(thm)],[f21])).
% 1.84/1.46  thf(f21,plain,(
% 1.84/1.46    (uniqinunit = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y0 @ (setadjoin @ Y1 @ emptyset)) => (Y1 = Y0)))))))),
% 1.84/1.46    inference(fool_elimination,[status(thm)],[f20])).
% 1.84/1.46  thf(f20,plain,(
% 1.84/1.46    (uniqinunit = ! [X0 : $i,X1 : $i] : ((in @ X1 @ (setadjoin @ X0 @ emptyset)) => (X0 = X1)))),
% 1.84/1.46    inference(rectify,[status(thm)],[f5])).
% 1.84/1.46  thf(f5,axiom,(
% 1.84/1.46    (uniqinunit = ! [X3 : $i,X2 : $i] : ((in @ X2 @ (setadjoin @ X3 @ emptyset)) => (X2 = X3)))),
% 1.84/1.46    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',uniqinunit)).
% 1.84/1.46  thf(f30,plain,(
% 1.84/1.46    (setext = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => (in @ Y2 @ Y0)))) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => (in @ Y2 @ Y1)))) => (Y1 = Y0))))))))),
% 1.84/1.46    inference(cnf_transformation,[status(thm)],[f23])).
% 1.84/1.46  thf(f23,plain,(
% 1.84/1.46    (setext = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => (in @ Y2 @ Y0)))) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => (in @ Y2 @ Y1)))) => (Y1 = Y0))))))))),
% 1.84/1.46    inference(fool_elimination,[status(thm)],[f22])).
% 1.84/1.46  thf(f22,plain,(
% 1.84/1.46    (! [X0 : $i,X1 : $i] : (! [X2 : $i] : ((in @ X2 @ X0) => (in @ X2 @ X1)) => (! [X3 : $i] : ((in @ X3 @ X1) => (in @ X3 @ X0)) => (X0 = X1))) = setext)),
% 1.84/1.46    inference(rectify,[status(thm)],[f4])).
% 1.84/1.46  thf(f4,axiom,(
% 1.84/1.46    (! [X0 : $i,X4 : $i] : (! [X2 : $i] : ((in @ X2 @ X0) => (in @ X2 @ X4)) => (! [X2 : $i] : ((in @ X2 @ X4) => (in @ X2 @ X0)) => (X0 = X4))) = setext)),
% 1.84/1.46    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',setext)).
% 1.84/1.46  thf(f35,plain,(
% 1.84/1.46    (dsetconstrER = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ (^[Y3 : $i]: (Y2 @ Y3)))) => (Y2 @ Y0)))))))))),
% 1.84/1.46    inference(cnf_transformation,[status(thm)],[f17])).
% 1.84/1.46  thf(f17,plain,(
% 1.84/1.46    (dsetconstrER = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ (^[Y3 : $i]: (Y2 @ Y3)))) => (Y2 @ Y0)))))))))),
% 1.84/1.46    inference(fool_elimination,[status(thm)],[f16])).
% 1.84/1.46  thf(f16,plain,(
% 1.84/1.46    (! [X0 : $i > $o,X1 : $i,X2 : $i] : ((in @ X2 @ (dsetconstr @ X1 @ (^[X3 : $i] : (X0 @ X3)))) => (X0 @ X2)) = dsetconstrER)),
% 1.84/1.46    inference(rectify,[status(thm)],[f3])).
% 1.84/1.46  thf(f3,axiom,(
% 1.84/1.46    (! [X1 : $i > $o,X0 : $i,X2 : $i] : ((in @ X2 @ (dsetconstr @ X0 @ (^[X3 : $i] : (X1 @ X3)))) => (X1 @ X2)) = dsetconstrER)),
% 1.84/1.46    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',dsetconstrER)).
% 1.84/1.46  thf(f33,plain,(
% 1.84/1.46    (dsetconstrEL = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ (^[Y3 : $i]: (Y2 @ Y3)))) => (in @ Y0 @ Y1)))))))))),
% 1.84/1.46    inference(cnf_transformation,[status(thm)],[f19])).
% 1.84/1.46  thf(f19,plain,(
% 1.84/1.46    (dsetconstrEL = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ (^[Y3 : $i]: (Y2 @ Y3)))) => (in @ Y0 @ Y1)))))))))),
% 1.84/1.46    inference(fool_elimination,[status(thm)],[f18])).
% 1.84/1.46  thf(f18,plain,(
% 1.84/1.46    (! [X0 : $i > $o,X1 : $i,X2 : $i] : ((in @ X2 @ (dsetconstr @ X1 @ (^[X3 : $i] : (X0 @ X3)))) => (in @ X2 @ X1)) = dsetconstrEL)),
% 1.84/1.46    inference(rectify,[status(thm)],[f2])).
% 1.84/1.46  thf(f2,axiom,(
% 1.84/1.46    (! [X1 : $i > $o,X0 : $i,X2 : $i] : ((in @ X2 @ (dsetconstr @ X0 @ (^[X3 : $i] : (X1 @ X3)))) => (in @ X2 @ X0)) = dsetconstrEL)),
% 1.84/1.46    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',dsetconstrEL)).
% 1.84/1.46  thf(f37,plain,(
% 1.84/1.46    (dsetconstrI = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y1 @ Y0) => ((Y2 @ Y1) => (in @ Y1 @ (dsetconstr @ Y0 @ (^[Y3 : $i]: (Y2 @ Y3)))))))))))))),
% 1.84/1.46    inference(cnf_transformation,[status(thm)],[f25])).
% 1.84/1.46  thf(f25,plain,(
% 1.84/1.46    (dsetconstrI = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y1 @ Y0) => ((Y2 @ Y1) => (in @ Y1 @ (dsetconstr @ Y0 @ (^[Y3 : $i]: (Y2 @ Y3)))))))))))))),
% 1.84/1.46    inference(fool_elimination,[status(thm)],[f24])).
% 1.84/1.46  thf(f24,plain,(
% 1.84/1.46    (dsetconstrI = ! [X0 : $i > $o,X1 : $i,X2 : $i] : ((in @ X1 @ X2) => ((X0 @ X1) => (in @ X1 @ (dsetconstr @ X2 @ (^[X3 : $i] : (X0 @ X3)))))))),
% 1.84/1.46    inference(rectify,[status(thm)],[f1])).
% 1.84/1.46  thf(f1,axiom,(
% 1.84/1.46    (dsetconstrI = ! [X1 : $i > $o,X2 : $i,X0 : $i] : ((in @ X2 @ X0) => ((X1 @ X2) => (in @ X2 @ (dsetconstr @ X0 @ (^[X3 : $i] : (X1 @ X3)))))))),
% 1.84/1.46    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',dsetconstrI)).
% 1.84/1.46  thf(f34,plain,(
% 1.84/1.46    ((~ (dsetconstrI => (dsetconstrEL => (dsetconstrER => (setext => (uniqinunit => (eqinunit => (!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (ex1 @ Y1 @ (^[Y3 : $i]: (Y0 @ Y3))))))))))))))))))) = $true)),
% 1.84/1.46    inference(cnf_transformation,[status(thm)],[f15])).
% 1.84/1.46  thf(f15,plain,(
% 1.84/1.46    ((~ (dsetconstrI => (dsetconstrEL => (dsetconstrER => (setext => (uniqinunit => (eqinunit => (!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (ex1 @ Y1 @ (^[Y3 : $i]: (Y0 @ Y3))))))))))))))))))) = $true)),
% 1.84/1.46    inference(fool_elimination,[status(thm)],[f14])).
% 1.84/1.46  thf(f14,plain,(
% 1.84/1.46    ~(dsetconstrI => (dsetconstrEL => (dsetconstrER => (setext => (uniqinunit => (eqinunit => ! [X0 : $i,X1 : $i,X2 : $i > $o] : ((in @ X0 @ X1) => ((X2 @ X0) => (! [X3 : $i] : ((in @ X3 @ X1) => ((X2 @ X3) => (X0 = X3))) => (ex1 @ X1 @ (^[X4 : $i] : (X2 @ X4))))))))))))),
% 1.84/1.46    inference(rectify,[status(thm)],[f10])).
% 1.84/1.46  thf(f10,negated_conjecture,(
% 1.84/1.46    ~(dsetconstrI => (dsetconstrEL => (dsetconstrER => (setext => (uniqinunit => (eqinunit => ! [X2 : $i,X0 : $i,X1 : $i > $o] : ((in @ X2 @ X0) => ((X1 @ X2) => (! [X3 : $i] : ((in @ X3 @ X0) => ((X1 @ X3) => (X2 = X3))) => (ex1 @ X0 @ (^[X3 : $i] : (X1 @ X3))))))))))))),
% 1.84/1.46    inference(negated_conjecture,[status(cth)],[f9])).
% 1.84/1.46  thf(f9,conjecture,(
% 1.84/1.46    dsetconstrI => (dsetconstrEL => (dsetconstrER => (setext => (uniqinunit => (eqinunit => ! [X2 : $i,X0 : $i,X1 : $i > $o] : ((in @ X2 @ X0) => ((X1 @ X2) => (! [X3 : $i] : ((in @ X3 @ X0) => ((X1 @ X3) => (X2 = X3))) => (ex1 @ X0 @ (^[X3 : $i] : (X1 @ X3)))))))))))),
% 1.84/1.46    file('/export/starexec/sandbox2/tmp/tmp.YHd0are7Zs/DTF2THF_11842.p',ex1I)).
% 1.84/1.46  thf(f571,plain,(
% 1.84/1.46    ((in @ sK6 @ (dsetconstr @ sK3 @ sK2)) = $false) | ~spl0_1),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f569])).
% 1.84/1.46  thf(f150,plain,(
% 1.84/1.46    ($true = (in @ sK4 @ (dsetconstr @ sK3 @ sK2)))),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f145])).
% 1.84/1.46  thf(f145,plain,(
% 1.84/1.46    ($true = ($true => (in @ sK4 @ (dsetconstr @ sK3 @ sK2))))),
% 1.84/1.46    inference(superposition,[status(thm)],[f135,f140])).
% 1.84/1.46  thf(f140,plain,(
% 1.84/1.46    ((sK2 @ sK4) = $true)),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f122])).
% 1.84/1.46  thf(f122,plain,(
% 1.84/1.46    (((sK2 @ sK4) => ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ sK3) => ((sK2 @ Y0) => (sK4 = Y0))))) => (?? @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) & ((setadjoin @ Y0 @ emptyset) = (dsetconstr @ sK3 @ sK2))))))) = $false)),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f121])).
% 1.84/1.46  thf(f121,plain,(
% 1.84/1.46    (((in @ sK4 @ sK3) => ((sK2 @ sK4) => ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ sK3) => ((sK2 @ Y0) => (sK4 = Y0))))) => (?? @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) & ((setadjoin @ Y0 @ emptyset) = (dsetconstr @ sK3 @ sK2)))))))) = $false)),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f120])).
% 1.84/1.46  thf(f120,plain,(
% 1.84/1.46    ($false = ((^[Y0 : $i]: ((in @ Y0 @ sK3) => ((sK2 @ Y0) => ((!! @ $i @ (^[Y1 : $i]: ((in @ Y1 @ sK3) => ((sK2 @ Y1) => (Y0 = Y1))))) => (?? @ $i @ (^[Y1 : $i]: ((in @ Y1 @ (dsetconstr @ sK3 @ sK2)) & ((setadjoin @ Y1 @ emptyset) = (dsetconstr @ sK3 @ sK2))))))))) @ sK4))),
% 1.84/1.46    inference(sigma_clausification,[status(thm)],[f119])).
% 1.84/1.46  thf(f119,plain,(
% 1.84/1.46    ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ sK3) => ((sK2 @ Y0) => ((!! @ $i @ (^[Y1 : $i]: ((in @ Y1 @ sK3) => ((sK2 @ Y1) => (Y0 = Y1))))) => (?? @ $i @ (^[Y1 : $i]: ((in @ Y1 @ (dsetconstr @ sK3 @ sK2)) & ((setadjoin @ Y1 @ emptyset) = (dsetconstr @ sK3 @ sK2)))))))))) = $false)),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f118])).
% 1.84/1.46  thf(f118,plain,(
% 1.84/1.46    ($false = ((^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y1 @ Y0) => ((sK2 @ Y1) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => ((sK2 @ Y2) => (Y1 = Y2))))) => (?? @ $i @ (^[Y2 : $i]: ((in @ Y2 @ (dsetconstr @ Y0 @ sK2)) & ((setadjoin @ Y2 @ emptyset) = (dsetconstr @ Y0 @ sK2))))))))))) @ sK3))),
% 1.84/1.46    inference(sigma_clausification,[status(thm)],[f117])).
% 1.84/1.46  thf(f117,plain,(
% 1.84/1.46    ($false = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((in @ Y1 @ Y0) => ((sK2 @ Y1) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => ((sK2 @ Y2) => (Y1 = Y2))))) => (?? @ $i @ (^[Y2 : $i]: ((in @ Y2 @ (dsetconstr @ Y0 @ sK2)) & ((setadjoin @ Y2 @ emptyset) = (dsetconstr @ Y0 @ sK2)))))))))))))),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f116])).
% 1.84/1.46  thf(f116,plain,(
% 1.84/1.46    (((^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (?? @ $i @ (^[Y3 : $i]: ((in @ Y3 @ (dsetconstr @ Y1 @ Y0)) & ((setadjoin @ Y3 @ emptyset) = (dsetconstr @ Y1 @ Y0))))))))))))) @ sK2) = $false)),
% 1.84/1.46    inference(sigma_clausification,[status(thm)],[f105])).
% 1.84/1.46  thf(f105,plain,(
% 1.84/1.46    ((!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (?? @ $i @ (^[Y3 : $i]: ((in @ Y3 @ (dsetconstr @ Y1 @ Y0)) & ((setadjoin @ Y3 @ emptyset) = (dsetconstr @ Y1 @ Y0)))))))))))))) = $false)),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f94])).
% 1.84/1.46  thf(f94,plain,(
% 1.84/1.46    (((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))) => (!! @ ($i > $o) @ (^[Y0 : $i > $o]: (!! @ $i @ (^[Y1 : $i]: (!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => ((Y0 @ Y2) => ((!! @ $i @ (^[Y3 : $i]: ((in @ Y3 @ Y1) => ((Y0 @ Y3) => (Y2 = Y3))))) => (?? @ $i @ (^[Y3 : $i]: ((in @ Y3 @ (dsetconstr @ Y1 @ Y0)) & ((setadjoin @ Y3 @ emptyset) = (dsetconstr @ Y1 @ Y0))))))))))))))) = $false)),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f83])).
% 1.84/1.46  thf(f135,plain,(
% 1.84/1.46    ( ! [X0 : $i > $o] : ((((X0 @ sK4) => (in @ sK4 @ (dsetconstr @ sK3 @ X0))) = $true)) )),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f129])).
% 1.84/1.46  thf(f129,plain,(
% 1.84/1.46    ( ! [X0 : $i > $o] : ((($true => ((X0 @ sK4) => (in @ sK4 @ (dsetconstr @ sK3 @ X0)))) = $true)) )),
% 1.84/1.46    inference(superposition,[status(thm)],[f55,f123])).
% 1.84/1.46  thf(f123,plain,(
% 1.84/1.46    ($true = (in @ sK4 @ sK3))),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f121])).
% 1.84/1.46  thf(f55,plain,(
% 1.84/1.46    ( ! [X2 : $i,X3 : $i > $o,X1 : $i] : (($true = ((in @ X2 @ X1) => ((X3 @ X2) => (in @ X2 @ (dsetconstr @ X1 @ X3)))))) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f54])).
% 1.84/1.46  thf(f54,plain,(
% 1.84/1.46    ( ! [X2 : $i,X3 : $i > $o,X1 : $i] : (($true = ((^[Y0 : $i > $o]: ((in @ X2 @ X1) => ((Y0 @ X2) => (in @ X2 @ (dsetconstr @ X1 @ Y0))))) @ X3))) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f53])).
% 1.84/1.46  thf(f53,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : (($true = (!! @ ($i > $o) @ (^[Y0 : $i > $o]: ((in @ X2 @ X1) => ((Y0 @ X2) => (in @ X2 @ (dsetconstr @ X1 @ Y0)))))))) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f52])).
% 1.84/1.46  thf(f52,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : (($true = ((^[Y0 : $i]: (!! @ ($i > $o) @ (^[Y1 : $i > $o]: ((in @ Y0 @ X1) => ((Y1 @ Y0) => (in @ Y0 @ (dsetconstr @ X1 @ Y1))))))) @ X2))) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f51])).
% 1.84/1.46  thf(f51,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (($true = (!! @ $i @ (^[Y0 : $i]: (!! @ ($i > $o) @ (^[Y1 : $i > $o]: ((in @ Y0 @ X1) => ((Y1 @ Y0) => (in @ Y0 @ (dsetconstr @ X1 @ Y1)))))))))) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f50])).
% 1.84/1.46  thf(f50,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (($true = ((^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y1 @ Y0) => ((Y2 @ Y1) => (in @ Y1 @ (dsetconstr @ Y0 @ Y2))))))))) @ X1))) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f45])).
% 1.84/1.46  thf(f45,plain,(
% 1.84/1.46    ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y1 @ Y0) => ((Y2 @ Y1) => (in @ Y1 @ (dsetconstr @ Y0 @ Y2)))))))))) = $true)),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f41])).
% 1.84/1.46  thf(f558,plain,(
% 1.84/1.46    ~spl0_2),
% 1.84/1.46    inference(avatar_contradiction_clause,[status(thm)],[f557])).
% 1.84/1.46  thf(f557,plain,(
% 1.84/1.46    $false | ~spl0_2),
% 1.84/1.46    inference(trivial_inequality_removal,[status(thm)],[f556])).
% 1.84/1.46  thf(f556,plain,(
% 1.84/1.46    ($false = $true) | ~spl0_2),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f555])).
% 1.84/1.46  thf(f555,plain,(
% 1.84/1.46    ($true = (~ $true)) | ~spl0_2),
% 1.84/1.46    inference(backward_demodulation,[status(thm)],[f477,f548])).
% 1.84/1.46  thf(f548,plain,(
% 1.84/1.46    ($true = (in @ sK4 @ (setadjoin @ sK5 @ emptyset))) | ~spl0_2),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f540])).
% 1.84/1.46  thf(f540,plain,(
% 1.84/1.46    (($true => (in @ sK4 @ (setadjoin @ sK5 @ emptyset))) = $true) | ~spl0_2),
% 1.84/1.46    inference(superposition,[status(thm)],[f114,f503])).
% 1.84/1.46  thf(f503,plain,(
% 1.84/1.46    ($true = (sK4 = sK5)) | ~spl0_2),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f502])).
% 1.84/1.46  thf(f502,plain,(
% 1.84/1.46    (($true => (sK4 = sK5)) = $true) | ~spl0_2),
% 1.84/1.46    inference(backward_demodulation,[status(thm)],[f457,f495])).
% 1.84/1.46  thf(f495,plain,(
% 1.84/1.46    ($true = (in @ sK5 @ sK3)) | ~spl0_2),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f485])).
% 1.84/1.46  thf(f485,plain,(
% 1.84/1.46    ($true = ($true => (in @ sK5 @ sK3))) | ~spl0_2),
% 1.84/1.46    inference(superposition,[status(thm)],[f68,f435])).
% 1.84/1.46  thf(f435,plain,(
% 1.84/1.46    ((in @ sK5 @ (dsetconstr @ sK3 @ sK2)) = $true) | ~spl0_2),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f382])).
% 1.84/1.46  thf(f382,plain,(
% 1.84/1.46    ($false = ((in @ sK5 @ (dsetconstr @ sK3 @ sK2)) => (in @ sK5 @ (setadjoin @ sK4 @ emptyset)))) | ~spl0_2),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f376])).
% 1.84/1.46  thf(f376,plain,(
% 1.84/1.46    ($false = ((^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) => (in @ Y0 @ (setadjoin @ sK4 @ emptyset)))) @ sK5)) | ~spl0_2),
% 1.84/1.46    inference(sigma_clausification,[status(thm)],[f353])).
% 1.84/1.46  thf(f353,plain,(
% 1.84/1.46    ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) => (in @ Y0 @ (setadjoin @ sK4 @ emptyset))))) = $false) | ~spl0_2),
% 1.84/1.46    inference(not_proxy_clausification,[status(thm)],[f346])).
% 1.84/1.46  thf(f346,plain,(
% 1.84/1.46    ($true = (~ (!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) => (in @ Y0 @ (setadjoin @ sK4 @ emptyset))))))) | ~spl0_2),
% 1.84/1.46    inference(avatar_component_clause,[status(thm)],[f345])).
% 1.84/1.46  thf(f345,definition,(
% 1.84/1.46    spl0_2 <=> ($true = (~ (!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) => (in @ Y0 @ (setadjoin @ sK4 @ emptyset)))))))),
% 1.84/1.46    introduced(definition,[new_symbols(naming,[spl0_2])],[avatar_definition])).
% 1.84/1.46  thf(f68,plain,(
% 1.84/1.46    ( ! [X2 : $i,X3 : $i > $o,X1 : $i] : ((((in @ X1 @ (dsetconstr @ X2 @ X3)) => (in @ X1 @ X2)) = $true)) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f67])).
% 1.84/1.46  thf(f67,plain,(
% 1.84/1.46    ( ! [X2 : $i,X3 : $i > $o,X1 : $i] : ((((^[Y0 : $i > $o]: ((in @ X1 @ (dsetconstr @ X2 @ Y0)) => (in @ X1 @ X2))) @ X3) = $true)) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f66])).
% 1.84/1.46  thf(f66,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : (((!! @ ($i > $o) @ (^[Y0 : $i > $o]: ((in @ X1 @ (dsetconstr @ X2 @ Y0)) => (in @ X1 @ X2)))) = $true)) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f65])).
% 1.84/1.46  thf(f65,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : (($true = ((^[Y0 : $i]: (!! @ ($i > $o) @ (^[Y1 : $i > $o]: ((in @ X1 @ (dsetconstr @ Y0 @ Y1)) => (in @ X1 @ Y0))))) @ X2))) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f64])).
% 1.84/1.46  thf(f64,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (((!! @ $i @ (^[Y0 : $i]: (!! @ ($i > $o) @ (^[Y1 : $i > $o]: ((in @ X1 @ (dsetconstr @ Y0 @ Y1)) => (in @ X1 @ Y0)))))) = $true)) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f63])).
% 1.84/1.46  thf(f63,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (($true = ((^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (in @ Y0 @ Y1))))))) @ X1))) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f58])).
% 1.84/1.46  thf(f58,plain,(
% 1.84/1.46    ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (in @ Y0 @ Y1)))))))) = $true)),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f44])).
% 1.84/1.46  thf(f457,plain,(
% 1.84/1.46    ($true = ((in @ sK5 @ sK3) => (sK4 = sK5))) | ~spl0_2),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f454])).
% 1.84/1.46  thf(f454,plain,(
% 1.84/1.46    (((in @ sK5 @ sK3) => ($true => (sK4 = sK5))) = $true) | ~spl0_2),
% 1.84/1.46    inference(superposition,[status(thm)],[f183,f438])).
% 1.84/1.46  thf(f438,plain,(
% 1.84/1.46    ($true = (sK2 @ sK5)) | ~spl0_2),
% 1.84/1.46    inference(trivial_inequality_removal,[status(thm)],[f437])).
% 1.84/1.46  thf(f437,plain,(
% 1.84/1.46    ($false = $true) | ($true = (sK2 @ sK5)) | ~spl0_2),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f436])).
% 1.84/1.46  thf(f436,plain,(
% 1.84/1.46    (($false => (in @ sK5 @ (setadjoin @ sK4 @ emptyset))) = $false) | ($true = (sK2 @ sK5)) | ~spl0_2),
% 1.84/1.46    inference(superposition,[status(thm)],[f382,f82])).
% 1.84/1.46  thf(f82,plain,(
% 1.84/1.46    ( ! [X2 : $i,X3 : $i > $o,X1 : $i] : (($false = (in @ X1 @ (dsetconstr @ X2 @ X3))) | ($true = (X3 @ X1))) )),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f81])).
% 1.84/1.46  thf(f81,plain,(
% 1.84/1.46    ( ! [X2 : $i,X3 : $i > $o,X1 : $i] : ((((in @ X1 @ (dsetconstr @ X2 @ X3)) => (X3 @ X1)) = $true)) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f80])).
% 1.84/1.46  thf(f80,plain,(
% 1.84/1.46    ( ! [X2 : $i,X3 : $i > $o,X1 : $i] : (($true = ((^[Y0 : $i > $o]: ((in @ X1 @ (dsetconstr @ X2 @ Y0)) => (Y0 @ X1))) @ X3))) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f79])).
% 1.84/1.46  thf(f79,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : (((!! @ ($i > $o) @ (^[Y0 : $i > $o]: ((in @ X1 @ (dsetconstr @ X2 @ Y0)) => (Y0 @ X1)))) = $true)) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f78])).
% 1.84/1.46  thf(f78,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : ((((^[Y0 : $i]: (!! @ ($i > $o) @ (^[Y1 : $i > $o]: ((in @ X1 @ (dsetconstr @ Y0 @ Y1)) => (Y1 @ X1))))) @ X2) = $true)) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f77])).
% 1.84/1.46  thf(f77,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (((!! @ $i @ (^[Y0 : $i]: (!! @ ($i > $o) @ (^[Y1 : $i > $o]: ((in @ X1 @ (dsetconstr @ Y0 @ Y1)) => (Y1 @ X1)))))) = $true)) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f76])).
% 1.84/1.46  thf(f76,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (($true = ((^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (Y2 @ Y0))))))) @ X1))) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f71])).
% 1.84/1.46  thf(f71,plain,(
% 1.84/1.46    ($true = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: (!! @ ($i > $o) @ (^[Y2 : $i > $o]: ((in @ Y0 @ (dsetconstr @ Y1 @ Y2)) => (Y2 @ Y0)))))))))),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f57])).
% 1.84/1.46  thf(f183,plain,(
% 1.84/1.46    ( ! [X1 : $i] : ((((in @ X1 @ sK3) => ((sK2 @ X1) => (sK4 = X1))) = $true)) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f182])).
% 1.84/1.46  thf(f182,plain,(
% 1.84/1.46    ( ! [X1 : $i] : ((((^[Y0 : $i]: ((in @ Y0 @ sK3) => ((sK2 @ Y0) => (sK4 = Y0)))) @ X1) = $true)) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f170])).
% 1.84/1.46  thf(f170,plain,(
% 1.84/1.46    ($true = (!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ sK3) => ((sK2 @ Y0) => (sK4 = Y0))))))),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f139])).
% 1.84/1.46  thf(f139,plain,(
% 1.84/1.46    ($false = ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ sK3) => ((sK2 @ Y0) => (sK4 = Y0))))) => (?? @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) & ((setadjoin @ Y0 @ emptyset) = (dsetconstr @ sK3 @ sK2)))))))),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f122])).
% 1.84/1.46  thf(f114,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : ((((X2 = X1) => (in @ X2 @ (setadjoin @ X1 @ emptyset))) = $true)) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f113])).
% 1.84/1.46  thf(f113,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : ((((^[Y0 : $i]: ((Y0 = X1) => (in @ Y0 @ (setadjoin @ X1 @ emptyset)))) @ X2) = $true)) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f112])).
% 1.84/1.46  thf(f112,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (($true = (!! @ $i @ (^[Y0 : $i]: ((Y0 = X1) => (in @ Y0 @ (setadjoin @ X1 @ emptyset))))))) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f111])).
% 1.84/1.46  thf(f111,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (($true = ((^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset)))))) @ X1))) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f106])).
% 1.84/1.46  thf(f106,plain,(
% 1.84/1.46    ((!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((Y1 = Y0) => (in @ Y1 @ (setadjoin @ Y0 @ emptyset))))))) = $true)),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f94])).
% 1.84/1.46  thf(f477,plain,(
% 1.84/1.46    ($true = (~ (in @ sK4 @ (setadjoin @ sK5 @ emptyset)))) | ~spl0_2),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f465])).
% 1.84/1.46  thf(f465,plain,(
% 1.84/1.46    (((in @ sK4 @ (setadjoin @ sK5 @ emptyset)) => $false) = $true) | ~spl0_2),
% 1.84/1.46    inference(superposition,[status(thm)],[f103,f460])).
% 1.84/1.46  thf(f460,plain,(
% 1.84/1.46    ($false = (sK5 = sK4)) | ~spl0_2),
% 1.84/1.46    inference(not_proxy_clausification,[status(thm)],[f453])).
% 1.84/1.46  thf(f453,plain,(
% 1.84/1.46    ((~ (sK5 = sK4)) = $true) | ~spl0_2),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f441])).
% 1.84/1.46  thf(f441,plain,(
% 1.84/1.46    (((sK5 = sK4) => $false) = $true) | ~spl0_2),
% 1.84/1.46    inference(superposition,[status(thm)],[f114,f440])).
% 1.84/1.46  thf(f440,plain,(
% 1.84/1.46    ($false = (in @ sK5 @ (setadjoin @ sK4 @ emptyset))) | ~spl0_2),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f439])).
% 1.84/1.46  thf(f439,plain,(
% 1.84/1.46    (($true => (in @ sK5 @ (setadjoin @ sK4 @ emptyset))) = $false) | ~spl0_2),
% 1.84/1.46    inference(backward_demodulation,[status(thm)],[f382,f435])).
% 1.84/1.46  thf(f347,plain,(
% 1.84/1.46    spl0_1 | spl0_2),
% 1.84/1.46    inference(avatar_split_clause,[status(thm)],[f340,f345,f342])).
% 1.84/1.46  thf(f340,plain,(
% 1.84/1.46    ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (setadjoin @ sK4 @ emptyset)) => (in @ Y0 @ (dsetconstr @ sK3 @ sK2))))) = $false) | ($true = (~ (!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) => (in @ Y0 @ (setadjoin @ sK4 @ emptyset)))))))),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f256])).
% 1.84/1.46  thf(f256,plain,(
% 1.84/1.46    (((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (setadjoin @ sK4 @ emptyset)) => (in @ Y0 @ (dsetconstr @ sK3 @ sK2))))) => (~ (!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) => (in @ Y0 @ (setadjoin @ sK4 @ emptyset))))))) = $true)),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f247])).
% 1.84/1.46  thf(f247,plain,(
% 1.84/1.46    (((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (setadjoin @ sK4 @ emptyset)) => (in @ Y0 @ (dsetconstr @ sK3 @ sK2))))) => ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) => (in @ Y0 @ (setadjoin @ sK4 @ emptyset))))) => $false)) = $true)),
% 1.84/1.46    inference(superposition,[status(thm)],[f92,f242])).
% 1.84/1.46  thf(f242,plain,(
% 1.84/1.46    (((setadjoin @ sK4 @ emptyset) = (dsetconstr @ sK3 @ sK2)) = $false)),
% 1.84/1.46    inference(boolean_simplification,[status(thm)],[f241])).
% 1.84/1.46  thf(f241,plain,(
% 1.84/1.46    ($false = ($true & ((setadjoin @ sK4 @ emptyset) = (dsetconstr @ sK3 @ sK2))))),
% 1.84/1.46    inference(superposition,[status(thm)],[f220,f150])).
% 1.84/1.46  thf(f220,plain,(
% 1.84/1.46    ( ! [X1 : $i] : ((((in @ X1 @ (dsetconstr @ sK3 @ sK2)) & ((setadjoin @ X1 @ emptyset) = (dsetconstr @ sK3 @ sK2))) = $false)) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f219])).
% 1.84/1.46  thf(f219,plain,(
% 1.84/1.46    ( ! [X1 : $i] : ((((^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) & ((setadjoin @ Y0 @ emptyset) = (dsetconstr @ sK3 @ sK2)))) @ X1) = $false)) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f169])).
% 1.84/1.46  thf(f169,plain,(
% 1.84/1.46    ($false = (?? @ $i @ (^[Y0 : $i]: ((in @ Y0 @ (dsetconstr @ sK3 @ sK2)) & ((setadjoin @ Y0 @ emptyset) = (dsetconstr @ sK3 @ sK2))))))),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f139])).
% 1.84/1.46  thf(f92,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : (($true = ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ X2) => (in @ Y0 @ X1)))) => ((!! @ $i @ (^[Y0 : $i]: ((in @ Y0 @ X1) => (in @ Y0 @ X2)))) => (X2 = X1))))) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f91])).
% 1.84/1.46  thf(f91,plain,(
% 1.84/1.46    ( ! [X2 : $i,X1 : $i] : (($true = ((^[Y0 : $i]: ((!! @ $i @ (^[Y1 : $i]: ((in @ Y1 @ Y0) => (in @ Y1 @ X1)))) => ((!! @ $i @ (^[Y1 : $i]: ((in @ Y1 @ X1) => (in @ Y1 @ Y0)))) => (Y0 = X1)))) @ X2))) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f90])).
% 1.84/1.46  thf(f90,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (($true = (!! @ $i @ (^[Y0 : $i]: ((!! @ $i @ (^[Y1 : $i]: ((in @ Y1 @ Y0) => (in @ Y1 @ X1)))) => ((!! @ $i @ (^[Y1 : $i]: ((in @ Y1 @ X1) => (in @ Y1 @ Y0)))) => (Y0 = X1))))))) )),
% 1.84/1.46    inference(beta_eta_normalization,[status(thm)],[f89])).
% 1.84/1.46  thf(f89,plain,(
% 1.84/1.46    ( ! [X1 : $i] : (($true = ((^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => (in @ Y2 @ Y0)))) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => (in @ Y2 @ Y1)))) => (Y1 = Y0)))))) @ X1))) )),
% 1.84/1.46    inference(pi_clausification,[status(thm)],[f84])).
% 1.84/1.46  thf(f84,plain,(
% 1.84/1.46    ($true = (!! @ $i @ (^[Y0 : $i]: (!! @ $i @ (^[Y1 : $i]: ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y1) => (in @ Y2 @ Y0)))) => ((!! @ $i @ (^[Y2 : $i]: ((in @ Y2 @ Y0) => (in @ Y2 @ Y1)))) => (Y1 = Y0))))))))),
% 1.84/1.46    inference(binary_proxy_clausification,[status(thm)],[f70])).
% 1.84/1.46  % SZS output end Proof for DTF2THF_11842
% 1.84/1.46  % (12129)------------------------------
% 1.84/1.46  % (12129)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.84/1.46  % (12129)Termination reason: Refutation
% 1.84/1.46  
% 1.84/1.46  % (12129)Memory used [KB]: 6268
% 1.84/1.46  % (12129)Time elapsed: 0.054 s
% 1.84/1.46  % (12129)Instructions burned: 140 (million)
% 1.84/1.46  % (12129)------------------------------
% 1.84/1.46  % (12129)------------------------------
% 1.84/1.46  % (12117)Success in time 0.079 s
%------------------------------------------------------------------------------