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DT2H2X---1.9.5.THM-Ref.s

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%------------------------------------------------------------------------------
% File     : DT2H2X---1.9.5
% Problem  : SET619^5 : TPTP v9.2.1. Released v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : /export/starexec/sandbox/solver/bin/run_DT2H2X /export/starexec/sandbox/benchmark/theBenchmark.p 300

% Computer : n012.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 09:31:56 AM UTC 2026

% Result   : Theorem 1.40s 1.28s
% Output   : Refutation 1.40s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   20
%            Number of leaves      :    6
% Syntax   : Number of formulae    :   55 (  10 unt;   0 typ;   4 def)
%            Number of atoms       :  363 (  88 equ;   0 cnn)
%            Maximal formula atoms :    4 (   6 avg)
%            Number of connectives :  473 (  78   ~; 109   |;  66   &; 215   @)
%                                         (   4 <=>;   1  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    5 (   3 avg)
%            Number of types       :    2 (   1 usr)
%            Number of type conns  :   12 (  12   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   11 (   8 usr;   7 con; 0-2 aty)
%            Number of variables   :   32 (  20   ^;   8   !;   4   ?;  32   :)

% Comments : 
%------------------------------------------------------------------------------
thf(type_def_5,type,
    a: $tType ).

thf(func_def_0,type,
    a: $tType ).

thf(func_def_9,type,
    sK0: a > $o ).

thf(func_def_10,type,
    sK1: a > $o ).

thf(func_def_12,type,
    ph3: 
      !>[X0: $tType] : X0 ).

thf(func_def_13,type,
    sK4: a ).

thf(f109,plain,
    $false,
    inference(avatar_sat_refutation,[status(thm)],[f91,f95,f97,f99,f102,f108]) ).

thf(f108,plain,
    ( ~ spl2_1
    | ~ spl2_3 ),
    inference(avatar_contradiction_clause,[status(thm)],[f107]) ).

thf(f107,plain,
    ( $false
    | ~ spl2_1
    | ~ spl2_3 ),
    inference(trivial_inequality_removal,[status(thm)],[f103]) ).

thf(f103,plain,
    ( ( $false = $true )
    | ~ spl2_1
    | ~ spl2_3 ),
    inference(superposition,[status(thm)],[f81,f73]) ).

thf(f73,plain,
    ( ( $true
      = ( sK0 @ sK4 ) )
    | ~ spl2_1 ),
    inference(avatar_component_clause,[status(thm)],[f71]) ).

thf(f71,definition,
    ( spl2_1
  <=> ( $true
      = ( sK0 @ sK4 ) ) ),
    introduced(definition,[new_symbols(naming,[spl2_1])],[avatar_definition]) ).

thf(f81,plain,
    ( ( $false
      = ( sK0 @ sK4 ) )
    | ~ spl2_3 ),
    inference(avatar_component_clause,[status(thm)],[f79]) ).

thf(f79,definition,
    ( spl2_3
  <=> ( $false
      = ( sK0 @ sK4 ) ) ),
    introduced(definition,[new_symbols(naming,[spl2_3])],[avatar_definition]) ).

thf(f102,plain,
    ( ~ spl2_2
    | ~ spl2_4 ),
    inference(avatar_contradiction_clause,[status(thm)],[f101]) ).

thf(f101,plain,
    ( $false
    | ~ spl2_2
    | ~ spl2_4 ),
    inference(trivial_inequality_removal,[status(thm)],[f100]) ).

thf(f100,plain,
    ( ( $false = $true )
    | ~ spl2_2
    | ~ spl2_4 ),
    inference(forward_demodulation,[status(thm)],[f77,f86]) ).

thf(f86,plain,
    ( ( ( sK1 @ sK4 )
      = $false )
    | ~ spl2_4 ),
    inference(avatar_component_clause,[status(thm)],[f84]) ).

thf(f84,definition,
    ( spl2_4
  <=> ( ( sK1 @ sK4 )
      = $false ) ),
    introduced(definition,[new_symbols(naming,[spl2_4])],[avatar_definition]) ).

thf(f77,plain,
    ( ( ( sK1 @ sK4 )
      = $true )
    | ~ spl2_2 ),
    inference(avatar_component_clause,[status(thm)],[f75]) ).

thf(f75,definition,
    ( spl2_2
  <=> ( ( sK1 @ sK4 )
      = $true ) ),
    introduced(definition,[new_symbols(naming,[spl2_2])],[avatar_definition]) ).

thf(f99,plain,
    ( spl2_3
    | spl2_2 ),
    inference(avatar_split_clause,[status(thm)],[f22,f75,f79]) ).

thf(f22,plain,
    ( ( $false
      = ( sK0 @ sK4 ) )
    | ( ( sK1 @ sK4 )
      = $true ) ),
    inference(not_proxy_clausification,[status(thm)],[f21]) ).

thf(f21,plain,
    ( ( $false
      = ( sK0 @ sK4 ) )
    | ( ( ~ ( sK1 @ sK4 ) )
      = $false ) ),
    inference(duplicate_literal_removal,[status(thm)],[f20]) ).

thf(f20,plain,
    ( ( $false
      = ( sK0 @ sK4 ) )
    | ( ( ~ ( sK1 @ sK4 ) )
      = $false )
    | ( $false
      = ( sK0 @ sK4 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f19]) ).

thf(f19,plain,
    ( ( ( ~ ( sK1 @ sK4 )
        & ( sK0 @ sK4 ) )
      = $false )
    | ( $false
      = ( sK0 @ sK4 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f17]) ).

thf(f17,plain,
    ( ( ( ( ~ ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ~ ( sK0 @ sK4 ) ) )
      = $false )
    | ( $false
      = ( sK0 @ sK4 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f15]) ).

thf(f15,plain,
    ( ( $false
      = ( sK0 @ sK4 ) )
    | ( ( ( ~ ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ~ ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) ) )
      = $false ) ),
    inference(binary_proxy_clausification,[status(thm)],[f13]) ).

thf(f13,plain,
    ( ( $false
      = ( ( sK0 @ sK4 )
        | ( sK1 @ sK4 ) ) )
    | ( ( ( ~ ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ~ ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) ) )
      = $false ) ),
    inference(binary_proxy_clausification,[status(thm)],[f11]) ).

thf(f11,plain,
    ( ( ( ~ ( sK1 @ sK4 )
        & ( sK0 @ sK4 ) )
      | ( ( sK1 @ sK4 )
        & ~ ( sK0 @ sK4 ) )
      | ( ( sK1 @ sK4 )
        & ( sK0 @ sK4 ) ) )
   != ( ( sK0 @ sK4 )
      | ( sK1 @ sK4 ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f10]) ).

thf(f10,plain,
    ( ( ^ [Y0: a] :
          ( ( sK0 @ Y0 )
          | ( sK1 @ Y0 ) )
      @ sK4 )
   != ( ^ [Y0: a] :
          ( ( ~ ( sK1 @ Y0 )
            & ( sK0 @ Y0 ) )
          | ( ( sK1 @ Y0 )
            & ~ ( sK0 @ Y0 ) )
          | ( ( sK1 @ Y0 )
            & ( sK0 @ Y0 ) ) )
      @ sK4 ) ),
    inference(negative_extensionality,[status(thm)],[f9]) ).

thf(f9,plain,
    ( ( ^ [Y0: a] :
          ( ( ~ ( sK1 @ Y0 )
            & ( sK0 @ Y0 ) )
          | ( ( sK1 @ Y0 )
            & ~ ( sK0 @ Y0 ) )
          | ( ( sK1 @ Y0 )
            & ( sK0 @ Y0 ) ) ) )
   != ( ^ [Y0: a] :
          ( ( sK0 @ Y0 )
          | ( sK1 @ Y0 ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f8]) ).

thf(f8,plain,
    ( ( ^ [Y0: a] :
          ( ( ~ ( sK1 @ Y0 )
            & ( sK0 @ Y0 ) )
          | ( ( sK1 @ Y0 )
            & ~ ( sK0 @ Y0 ) )
          | ( ( sK1 @ Y0 )
            & ( sK0 @ Y0 ) ) ) )
   != ( ^ [Y0: a] :
          ( ( sK0 @ Y0 )
          | ( sK1 @ Y0 ) ) ) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK0,sK1])],[f6,f7]) ).

thf(f7,plain,
    ( ? [X0: a > $o,X1: a > $o] :
        ( ( ^ [Y0: a] :
              ( ( ~ ( X1 @ Y0 )
                & ( X0 @ Y0 ) )
              | ( ( X1 @ Y0 )
                & ~ ( X0 @ Y0 ) )
              | ( ( X1 @ Y0 )
                & ( X0 @ Y0 ) ) ) )
       != ( ^ [Y0: a] :
              ( ( X0 @ Y0 )
              | ( X1 @ Y0 ) ) ) )
   => ( ( ^ [Y0: a] :
            ( ( ~ ( sK1 @ Y0 )
              & ( sK0 @ Y0 ) )
            | ( ( sK1 @ Y0 )
              & ~ ( sK0 @ Y0 ) )
            | ( ( sK1 @ Y0 )
              & ( sK0 @ Y0 ) ) ) )
     != ( ^ [Y0: a] :
            ( ( sK0 @ Y0 )
            | ( sK1 @ Y0 ) ) ) ) ),
    introduced(definition,[],[choice_axiom]) ).

thf(f6,plain,
    ? [X0: a > $o,X1: a > $o] :
      ( ( ^ [Y0: a] :
            ( ( ~ ( X1 @ Y0 )
              & ( X0 @ Y0 ) )
            | ( ( X1 @ Y0 )
              & ~ ( X0 @ Y0 ) )
            | ( ( X1 @ Y0 )
              & ( X0 @ Y0 ) ) ) )
     != ( ^ [Y0: a] :
            ( ( X0 @ Y0 )
            | ( X1 @ Y0 ) ) ) ),
    inference(ennf_transformation,[status(thm)],[f5]) ).

thf(f5,plain,
    ~ ! [X0: a > $o,X1: a > $o] :
        ( ( ^ [Y0: a] :
              ( ( ~ ( X1 @ Y0 )
                & ( X0 @ Y0 ) )
              | ( ( X1 @ Y0 )
                & ~ ( X0 @ Y0 ) )
              | ( ( X1 @ Y0 )
                & ( X0 @ Y0 ) ) ) )
        = ( ^ [Y0: a] :
              ( ( X0 @ Y0 )
              | ( X1 @ Y0 ) ) ) ),
    inference(fool_elimination,[status(thm)],[f4]) ).

thf(f4,plain,
    ~ ! [X0: a > $o,X1: a > $o] :
        ( ( ^ [X2: a] :
              ( ( X1 @ X2 )
              | ( X0 @ X2 ) ) )
        = ( ^ [X3: a] :
              ( ( ( X0 @ X3 )
                & ( X1 @ X3 ) )
              | ( ~ ( X0 @ X3 )
                & ( X1 @ X3 ) )
              | ( ( X0 @ X3 )
                & ~ ( X1 @ X3 ) ) ) ) ),
    inference(rectify,[status(thm)],[f2]) ).

thf(f2,negated_conjecture,
    ~ ! [X0: a > $o,X1: a > $o] :
        ( ( ^ [X2: a] :
              ( ( X1 @ X2 )
              | ( X0 @ X2 ) ) )
        = ( ^ [X2: a] :
              ( ( ( X0 @ X2 )
                & ( X1 @ X2 ) )
              | ( ~ ( X0 @ X2 )
                & ( X1 @ X2 ) )
              | ( ( X0 @ X2 )
                & ~ ( X1 @ X2 ) ) ) ) ),
    inference(negated_conjecture,[status(cth)],[f1]) ).

thf(f1,conjecture,
    ! [X0: a > $o,X1: a > $o] :
      ( ( ^ [X2: a] :
            ( ( X1 @ X2 )
            | ( X0 @ X2 ) ) )
      = ( ^ [X2: a] :
            ( ( ( X0 @ X2 )
              & ( X1 @ X2 ) )
            | ( ~ ( X0 @ X2 )
              & ( X1 @ X2 ) )
            | ( ( X0 @ X2 )
              & ~ ( X1 @ X2 ) ) ) ) ),
    file('/export/starexec/sandbox/tmp/tmp.eO2UpsHPwy/DTF2THF_1470.p',cBOOL_PROP_95_pme) ).

thf(f97,plain,
    ( spl2_4
    | spl2_3 ),
    inference(avatar_split_clause,[status(thm)],[f26,f79,f84]) ).

thf(f26,plain,
    ( ( $false
      = ( sK0 @ sK4 ) )
    | ( ( sK1 @ sK4 )
      = $false ) ),
    inference(duplicate_literal_removal,[status(thm)],[f25]) ).

thf(f25,plain,
    ( ( $false
      = ( sK0 @ sK4 ) )
    | ( ( sK1 @ sK4 )
      = $false )
    | ( $false
      = ( sK0 @ sK4 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f16]) ).

thf(f16,plain,
    ( ( $false
      = ( sK0 @ sK4 ) )
    | ( $false
      = ( ( sK1 @ sK4 )
        & ( sK0 @ sK4 ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f15]) ).

thf(f95,plain,
    ( spl2_1
    | spl2_4 ),
    inference(avatar_split_clause,[status(thm)],[f35,f84,f71]) ).

thf(f35,plain,
    ( ( $true
      = ( sK0 @ sK4 ) )
    | ( ( sK1 @ sK4 )
      = $false ) ),
    inference(not_proxy_clausification,[status(thm)],[f34]) ).

thf(f34,plain,
    ( ( ( ~ ( sK0 @ sK4 ) )
      = $false )
    | ( ( sK1 @ sK4 )
      = $false ) ),
    inference(duplicate_literal_removal,[status(thm)],[f33]) ).

thf(f33,plain,
    ( ( ( ~ ( sK0 @ sK4 ) )
      = $false )
    | ( ( sK1 @ sK4 )
      = $false )
    | ( ( sK1 @ sK4 )
      = $false ) ),
    inference(binary_proxy_clausification,[status(thm)],[f29]) ).

thf(f29,plain,
    ( ( ( ( sK1 @ sK4 )
        & ~ ( sK0 @ sK4 ) )
      = $false )
    | ( ( sK1 @ sK4 )
      = $false ) ),
    inference(binary_proxy_clausification,[status(thm)],[f28]) ).

thf(f28,plain,
    ( ( ( ( ~ ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ~ ( sK0 @ sK4 ) ) )
      = $false )
    | ( ( sK1 @ sK4 )
      = $false ) ),
    inference(binary_proxy_clausification,[status(thm)],[f14]) ).

thf(f14,plain,
    ( ( ( sK1 @ sK4 )
      = $false )
    | ( ( ( ~ ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ~ ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) ) )
      = $false ) ),
    inference(binary_proxy_clausification,[status(thm)],[f13]) ).

thf(f91,plain,
    ( spl2_2
    | spl2_1 ),
    inference(avatar_split_clause,[status(thm)],[f54,f71,f75]) ).

thf(f54,plain,
    ( ( $true
      = ( sK0 @ sK4 ) )
    | ( ( sK1 @ sK4 )
      = $true ) ),
    inference(duplicate_literal_removal,[status(thm)],[f53]) ).

thf(f53,plain,
    ( ( ( sK1 @ sK4 )
      = $true )
    | ( ( sK1 @ sK4 )
      = $true )
    | ( $true
      = ( sK0 @ sK4 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f51]) ).

thf(f51,plain,
    ( ( ( sK1 @ sK4 )
      = $true )
    | ( ( ( sK1 @ sK4 )
        & ~ ( sK0 @ sK4 ) )
      = $true )
    | ( $true
      = ( sK0 @ sK4 ) ) ),
    inference(duplicate_literal_removal,[status(thm)],[f44]) ).

thf(f44,plain,
    ( ( ( sK1 @ sK4 )
      = $true )
    | ( ( ( sK1 @ sK4 )
        & ~ ( sK0 @ sK4 ) )
      = $true )
    | ( $true
      = ( sK0 @ sK4 ) )
    | ( $true
      = ( sK0 @ sK4 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f43]) ).

thf(f43,plain,
    ( ( ( ~ ( sK1 @ sK4 )
        & ( sK0 @ sK4 ) )
      = $true )
    | ( ( ( sK1 @ sK4 )
        & ~ ( sK0 @ sK4 ) )
      = $true )
    | ( ( sK1 @ sK4 )
      = $true )
    | ( $true
      = ( sK0 @ sK4 ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f42]) ).

thf(f42,plain,
    ( ( ( sK1 @ sK4 )
      = $true )
    | ( $true
      = ( sK0 @ sK4 ) )
    | ( ( ( ~ ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ~ ( sK0 @ sK4 ) ) )
      = $true ) ),
    inference(duplicate_literal_removal,[status(thm)],[f41]) ).

thf(f41,plain,
    ( ( $true
      = ( sK0 @ sK4 ) )
    | ( ( ( ~ ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ~ ( sK0 @ sK4 ) ) )
      = $true )
    | ( ( sK1 @ sK4 )
      = $true )
    | ( ( sK1 @ sK4 )
      = $true ) ),
    inference(binary_proxy_clausification,[status(thm)],[f39]) ).

thf(f39,plain,
    ( ( ( sK1 @ sK4 )
      = $true )
    | ( ( ( sK1 @ sK4 )
        & ( sK0 @ sK4 ) )
      = $true )
    | ( $true
      = ( sK0 @ sK4 ) )
    | ( ( ( ~ ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ~ ( sK0 @ sK4 ) ) )
      = $true ) ),
    inference(binary_proxy_clausification,[status(thm)],[f38]) ).

thf(f38,plain,
    ( ( $true
      = ( sK0 @ sK4 ) )
    | ( ( ( ~ ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ~ ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) ) )
      = $true )
    | ( ( sK1 @ sK4 )
      = $true ) ),
    inference(binary_proxy_clausification,[status(thm)],[f12]) ).

thf(f12,plain,
    ( ( ( ( sK0 @ sK4 )
        | ( sK1 @ sK4 ) )
      = $true )
    | ( ( ( ~ ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ~ ( sK0 @ sK4 ) )
        | ( ( sK1 @ sK4 )
          & ( sK0 @ sK4 ) ) )
      = $true ) ),
    inference(binary_proxy_clausification,[status(thm)],[f11]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.06  % Problem  : SET619^5 : TPTP v9.2.1. Released v4.0.0.
% 0.00/0.07  % Command  : /export/starexec/sandbox/solver/bin/run_DT2H2X /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.07/0.25  % Computer : n012.cluster.edu
% 0.07/0.25  % Model    : x86_64 x86_64
% 0.07/0.25  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.25  % Memory   : 8042.1875MB
% 0.07/0.25  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.07/0.25  % CPULimit : 300
% 0.07/0.25  % WCLimit  : 300
% 0.07/0.25  % DateTime : Tue Feb 24 12:00:30 EST 2026
% 0.07/0.25  % CPUTime  : 
% 0.07/0.25  Running /export/starexec/sandbox/solver/bin/run_DT2H2X /export/starexec/sandbox/benchmark/theBenchmark.p 300
% 0.07/0.34  ---- Original DTF file ---
% 0.07/0.34  thf(spec,logic,$$dhol).
% 0.07/0.34  %------------------------------------------------------------------------------
% 0.07/0.34  % File     : SET619^5 : TPTP v9.2.1. Released v4.0.0.
% 0.07/0.34  % Domain   : Set Theory
% 0.07/0.34  % Problem  : TPS problem BOOL-PROP-95
% 0.07/0.34  % Version  : Especial.
% 0.07/0.34  % English  : Trybulec's 95th Boolean property of sets
% 0.07/0.34  
% 0.07/0.34  % Refs     : [TS89]  Trybulec & Swieczkowska (1989), Boolean Properties of
% 0.07/0.34  %          : [Bro09] Brown (2009), Email to Geoff Sutcliffe
% 0.07/0.34  % Source   : [Bro09]
% 0.07/0.34  % Names    : tps_0353 [Bro09]
% 0.07/0.34  %          : BOOL-PROP-95 [TPS]
% 0.07/0.34  
% 0.07/0.34  % Status   : Theorem
% 0.07/0.34  % Rating   : 0.00 v9.0.0, 0.10 v8.2.0, 0.15 v8.1.0, 0.09 v7.5.0, 0.14 v7.4.0, 0.22 v7.2.0, 0.12 v7.1.0, 0.25 v7.0.0, 0.29 v6.4.0, 0.33 v6.3.0, 0.40 v6.2.0, 0.14 v6.1.0, 0.29 v5.5.0, 0.17 v5.4.0, 0.20 v5.3.0, 0.40 v5.2.0, 0.20 v4.1.0, 0.00 v4.0.1, 0.33 v4.0.0
% 0.07/0.34  % Syntax   : Number of formulae    :    2 (   1 unt;   1 typ;   0 def)
% 0.07/0.34  %            Number of atoms       :    1 (   1 equ;   0 cnn)
% 0.07/0.34  %            Maximal formula atoms :    1 (   1 avg)
% 0.07/0.34  %            Number of connectives :   16 (   2   ~;   3   |;   3   &;   8   @)
% 0.07/0.34  %                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
% 0.07/0.34  %            Maximal formula depth :    3 (   3 avg)
% 0.07/0.34  %            Number of types       :    2 (   1 usr)
% 0.07/0.34  %            Number of type conns  :    2 (   2   >;   0   *;   0   +;   0  <<)
% 0.07/0.34  %            Number of symbols     :    1 (   0 usr;   0 con; 2-2 aty)
% 0.07/0.34  %            Number of variables   :    4 (   2   ^;   2   !;   0   ?;   4   :)
% 0.07/0.34  % SPC      : TH0_THM_EQU_NAR
% 0.07/0.34  
% 0.07/0.34  % Comments : This problem is from the TPS library. Copyright (c) 2009 The TPS
% 0.07/0.34  %            project in the Department of Mathematical Sciences at Carnegie
% 0.07/0.34  %            Mellon University. Distributed under the Creative Commons copyleft
% 0.07/0.34  %            license: http://creativecommons.org/licenses/by-sa/3.0/
% 0.07/0.34  %          : Polymorphic definitions expanded.
% 0.07/0.34  %------------------------------------------------------------------------------
% 0.07/0.34  thf(a_type,type,
% 0.07/0.34      a: $tType ).
% 0.07/0.34  
% 0.07/0.34  thf(cBOOL_PROP_95_pme,conjecture,
% 0.07/0.34      ! [X: a > $o,Y: a > $o] :
% 0.07/0.34        ( ( ^ [Xz: a] :
% 0.07/0.34              ( ( X @ Xz )
% 0.07/0.34              | ( Y @ Xz ) ) )
% 0.07/0.34        = ( ^ [Xz: a] :
% 0.07/0.34              ( ( ( X @ Xz )
% 0.07/0.34                & ~ ( Y @ Xz ) )
% 0.07/0.34              | ( ( Y @ Xz )
% 0.07/0.34                & ~ ( X @ Xz ) )
% 0.07/0.34              | ( ( X @ Xz )
% 0.07/0.34                & ( Y @ Xz ) ) ) ) ) ).
% 0.07/0.34  
% 0.07/0.34  %------------------------------------------------------------------------------
% 0.07/0.34  ------------------------
% 1.40/1.25  ---- Embedded in THF ---
% 1.40/1.25  %%% This output was generated by embedproblem, version 1.9.5 (library version 1.9).
% 1.40/1.25  %%% Generated on Tue Feb 24 12:00:31 EST 2026
% 1.40/1.25  %%% using '$$dhol' embedding, version 1.3.0.
% 1.40/1.25  %%% Logic specification used:
% 1.40/1.25  %%% thf(spec, logic, $$dhol).
% 1.40/1.25  
% 1.40/1.25  % SZS output start ListOfTHF for /export/starexec/sandbox/tmp/tmp.eO2UpsHPwy/DTF2DTF1470.p
% See solution above
% 1.40/1.25  ------------------------
% 1.40/1.26  ---- Cleaned THF ---
% 1.40/1.26  thf(a_type,type,
% 1.40/1.26      a: $tType ).
% 1.40/1.26  
% 1.40/1.26  thf(cBOOL_PROP_95_pme,conjecture,
% 1.40/1.26      ! [X: a > $o,Y: a > $o] :
% 1.40/1.26        ( ( ^ [Xz: a] :
% 1.40/1.26              ( ( X @ Xz )
% 1.40/1.26              | ( Y @ Xz ) ) )
% 1.40/1.26        = ( ^ [Xz: a] :
% 1.40/1.26              ( ( ( X @ Xz )
% 1.40/1.26                & ~ ( Y @ Xz ) )
% 1.40/1.26              | ( ( Y @ Xz )
% 1.40/1.26                & ~ ( X @ Xz ) )
% 1.40/1.26              | ( ( X @ Xz )
% 1.40/1.26                & ( Y @ Xz ) ) ) ) ) ).
% 1.40/1.26  ------------------------
% 1.40/1.28  % (1571)lrs+10_1:1_au=on:inj=on:i=2:si=on:rtra=on_0 on DTF2THF_1470 for (3000ds/2Mi)
% 1.40/1.28  % (1574)lrs+1004_1:128_cond=on:e2e=on:sp=weighted_frequency:i=18:si=on:rtra=on_0 on DTF2THF_1470 for (3000ds/18Mi)
% 1.40/1.28  % (1569)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_1470 for (3000ds/4Mi)
% 1.40/1.28  % (1572)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_1470 for (3000ds/2Mi)
% 1.40/1.28  % (1568)lrs+1002_1:8_bd=off:fd=off:hud=10:tnu=1:i=183:si=on:rtra=on_0 on DTF2THF_1470 for (3000ds/183Mi)
% 1.40/1.28  % (1573)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_1470 for (3000ds/275Mi)
% 1.40/1.28  % (1570)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_1470 for (3000ds/27Mi)
% 1.40/1.28  % (1571)Instruction limit reached!
% 1.40/1.28  % (1571)------------------------------
% 1.40/1.28  % (1571)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.40/1.28  % (1571)Termination reason: Unknown
% 1.40/1.28  % (1572)Instruction limit reached!
% 1.40/1.28  % (1572)------------------------------
% 1.40/1.28  % (1572)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.40/1.28  % (1571)Termination phase: Saturation
% 1.40/1.28  
% 1.40/1.28  % (1571)Memory used [KB]: 5500
% 1.40/1.28  % (1571)Time elapsed: 0.003 s
% 1.40/1.28  % (1571)Instructions burned: 2 (million)
% 1.40/1.28  % (1571)------------------------------
% 1.40/1.28  % (1571)------------------------------
% 1.40/1.28  % (1572)Termination reason: Unknown
% 1.40/1.28  % (1572)Termination phase: Saturation
% 1.40/1.28  
% 1.40/1.28  % (1572)Memory used [KB]: 5500
% 1.40/1.28  % (1572)Time elapsed: 0.003 s
% 1.40/1.28  % (1572)Instructions burned: 2 (million)
% 1.40/1.28  % (1572)------------------------------
% 1.40/1.28  % (1572)------------------------------
% 1.40/1.28  % (1569)Instruction limit reached!
% 1.40/1.28  % (1569)------------------------------
% 1.40/1.28  % (1569)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.40/1.28  % (1569)Termination reason: Unknown
% 1.40/1.28  % (1569)Termination phase: Saturation
% 1.40/1.28  
% 1.40/1.28  % (1569)Memory used [KB]: 5500
% 1.40/1.28  % (1569)Time elapsed: 0.004 s
% 1.40/1.28  % (1569)Instructions burned: 4 (million)
% 1.40/1.28  % (1569)------------------------------
% 1.40/1.28  % (1569)------------------------------
% 1.40/1.28  % (1573)First to succeed.
% 1.40/1.28  % (1570)Also succeeded, but the first one will report.
% 1.40/1.28  % (1573)Refutation found. Thanks to Tanya!
% 1.40/1.28  % SZS status Theorem for DTF2THF_1470
% 1.40/1.28  % SZS output start Proof for DTF2THF_1470
% 1.40/1.28  thf(type_def_5, type, a: $tType).
% 1.40/1.28  thf(func_def_0, type, a: $tType).
% 1.40/1.28  thf(func_def_9, type, sK0: a > $o).
% 1.40/1.28  thf(func_def_10, type, sK1: a > $o).
% 1.40/1.28  thf(func_def_12, type, ph3: !>[X0: $tType]:(X0)).
% 1.40/1.28  thf(func_def_13, type, sK4: a).
% 1.40/1.28  thf(f109,plain,(
% 1.40/1.28    $false),
% 1.40/1.28    inference(avatar_sat_refutation,[status(thm)],[f91,f95,f97,f99,f102,f108])).
% 1.40/1.28  thf(f108,plain,(
% 1.40/1.28    ~spl2_1 | ~spl2_3),
% 1.40/1.28    inference(avatar_contradiction_clause,[status(thm)],[f107])).
% 1.40/1.28  thf(f107,plain,(
% 1.40/1.28    $false | (~spl2_1 | ~spl2_3)),
% 1.40/1.28    inference(trivial_inequality_removal,[status(thm)],[f103])).
% 1.40/1.28  thf(f103,plain,(
% 1.40/1.28    ($false = $true) | (~spl2_1 | ~spl2_3)),
% 1.40/1.28    inference(superposition,[status(thm)],[f81,f73])).
% 1.40/1.28  thf(f73,plain,(
% 1.40/1.28    ($true = (sK0 @ sK4)) | ~spl2_1),
% 1.40/1.28    inference(avatar_component_clause,[status(thm)],[f71])).
% 1.40/1.28  thf(f71,definition,(
% 1.40/1.28    spl2_1 <=> ($true = (sK0 @ sK4))),
% 1.40/1.28    introduced(definition,[new_symbols(naming,[spl2_1])],[avatar_definition])).
% 1.40/1.28  thf(f81,plain,(
% 1.40/1.28    ($false = (sK0 @ sK4)) | ~spl2_3),
% 1.40/1.28    inference(avatar_component_clause,[status(thm)],[f79])).
% 1.40/1.28  thf(f79,definition,(
% 1.40/1.28    spl2_3 <=> ($false = (sK0 @ sK4))),
% 1.40/1.28    introduced(definition,[new_symbols(naming,[spl2_3])],[avatar_definition])).
% 1.40/1.28  thf(f102,plain,(
% 1.40/1.28    ~spl2_2 | ~spl2_4),
% 1.40/1.28    inference(avatar_contradiction_clause,[status(thm)],[f101])).
% 1.40/1.28  thf(f101,plain,(
% 1.40/1.28    $false | (~spl2_2 | ~spl2_4)),
% 1.40/1.28    inference(trivial_inequality_removal,[status(thm)],[f100])).
% 1.40/1.28  thf(f100,plain,(
% 1.40/1.28    ($false = $true) | (~spl2_2 | ~spl2_4)),
% 1.40/1.28    inference(forward_demodulation,[status(thm)],[f77,f86])).
% 1.40/1.28  thf(f86,plain,(
% 1.40/1.28    ((sK1 @ sK4) = $false) | ~spl2_4),
% 1.40/1.28    inference(avatar_component_clause,[status(thm)],[f84])).
% 1.40/1.28  thf(f84,definition,(
% 1.40/1.28    spl2_4 <=> ((sK1 @ sK4) = $false)),
% 1.40/1.28    introduced(definition,[new_symbols(naming,[spl2_4])],[avatar_definition])).
% 1.40/1.28  thf(f77,plain,(
% 1.40/1.28    ((sK1 @ sK4) = $true) | ~spl2_2),
% 1.40/1.28    inference(avatar_component_clause,[status(thm)],[f75])).
% 1.40/1.28  thf(f75,definition,(
% 1.40/1.28    spl2_2 <=> ((sK1 @ sK4) = $true)),
% 1.40/1.28    introduced(definition,[new_symbols(naming,[spl2_2])],[avatar_definition])).
% 1.40/1.28  thf(f99,plain,(
% 1.40/1.28    spl2_3 | spl2_2),
% 1.40/1.28    inference(avatar_split_clause,[status(thm)],[f22,f75,f79])).
% 1.40/1.28  thf(f22,plain,(
% 1.40/1.28    ($false = (sK0 @ sK4)) | ((sK1 @ sK4) = $true)),
% 1.40/1.28    inference(not_proxy_clausification,[status(thm)],[f21])).
% 1.40/1.28  thf(f21,plain,(
% 1.40/1.28    ($false = (sK0 @ sK4)) | ((~ (sK1 @ sK4)) = $false)),
% 1.40/1.28    inference(duplicate_literal_removal,[status(thm)],[f20])).
% 1.40/1.28  thf(f20,plain,(
% 1.40/1.28    ($false = (sK0 @ sK4)) | ((~ (sK1 @ sK4)) = $false) | ($false = (sK0 @ sK4))),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f19])).
% 1.40/1.28  thf(f19,plain,(
% 1.40/1.28    (((~ (sK1 @ sK4)) & (sK0 @ sK4)) = $false) | ($false = (sK0 @ sK4))),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f17])).
% 1.40/1.28  thf(f17,plain,(
% 1.40/1.28    ((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) = $false) | ($false = (sK0 @ sK4))),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f15])).
% 1.40/1.28  thf(f15,plain,(
% 1.40/1.28    ($false = (sK0 @ sK4)) | (((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) | ((sK1 @ sK4) & (sK0 @ sK4))) = $false)),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f13])).
% 1.40/1.28  thf(f13,plain,(
% 1.40/1.28    ($false = ((sK0 @ sK4) | (sK1 @ sK4))) | (((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) | ((sK1 @ sK4) & (sK0 @ sK4))) = $false)),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f11])).
% 1.40/1.28  thf(f11,plain,(
% 1.40/1.28    (((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) | ((sK1 @ sK4) & (sK0 @ sK4))) != ((sK0 @ sK4) | (sK1 @ sK4)))),
% 1.40/1.28    inference(beta_eta_normalization,[status(thm)],[f10])).
% 1.40/1.28  thf(f10,plain,(
% 1.40/1.28    (((^[Y0 : a]: ((sK0 @ Y0) | (sK1 @ Y0))) @ sK4) != ((^[Y0 : a]: ((((~ (sK1 @ Y0)) & (sK0 @ Y0)) | ((sK1 @ Y0) & (~ (sK0 @ Y0)))) | ((sK1 @ Y0) & (sK0 @ Y0)))) @ sK4))),
% 1.40/1.28    inference(negative_extensionality,[status(thm)],[f9])).
% 1.40/1.28  thf(f9,plain,(
% 1.40/1.28    ((^[Y0 : a]: ((((~ (sK1 @ Y0)) & (sK0 @ Y0)) | ((sK1 @ Y0) & (~ (sK0 @ Y0)))) | ((sK1 @ Y0) & (sK0 @ Y0)))) != (^[Y0 : a]: ((sK0 @ Y0) | (sK1 @ Y0))))),
% 1.40/1.28    inference(cnf_transformation,[status(thm)],[f8])).
% 1.40/1.28  thf(f8,plain,(
% 1.40/1.28    ((^[Y0 : a]: ((((~ (sK1 @ Y0)) & (sK0 @ Y0)) | ((sK1 @ Y0) & (~ (sK0 @ Y0)))) | ((sK1 @ Y0) & (sK0 @ Y0)))) != (^[Y0 : a]: ((sK0 @ Y0) | (sK1 @ Y0))))),
% 1.40/1.28    inference(skolemisation,[status(esa),new_symbols(skolem,[sK0,sK1])],[f6,f7])).
% 1.40/1.28  thf(f7,plain,(
% 1.40/1.28    ? [X0 : a > $o,X1 : a > $o] : ((^[Y0 : a]: ((((~ (X1 @ Y0)) & (X0 @ Y0)) | ((X1 @ Y0) & (~ (X0 @ Y0)))) | ((X1 @ Y0) & (X0 @ Y0)))) != (^[Y0 : a]: ((X0 @ Y0) | (X1 @ Y0)))) => ((^[Y0 : a]: ((((~ (sK1 @ Y0)) & (sK0 @ Y0)) | ((sK1 @ Y0) & (~ (sK0 @ Y0)))) | ((sK1 @ Y0) & (sK0 @ Y0)))) != (^[Y0 : a]: ((sK0 @ Y0) | (sK1 @ Y0))))),
% 1.40/1.28    introduced(definition,[],[choice_axiom])).
% 1.40/1.28  thf(f6,plain,(
% 1.40/1.28    ? [X0 : a > $o,X1 : a > $o] : ((^[Y0 : a]: ((((~ (X1 @ Y0)) & (X0 @ Y0)) | ((X1 @ Y0) & (~ (X0 @ Y0)))) | ((X1 @ Y0) & (X0 @ Y0)))) != (^[Y0 : a]: ((X0 @ Y0) | (X1 @ Y0))))),
% 1.40/1.28    inference(ennf_transformation,[status(thm)],[f5])).
% 1.40/1.28  thf(f5,plain,(
% 1.40/1.28    ~! [X0 : a > $o,X1 : a > $o] : ((^[Y0 : a]: ((((~ (X1 @ Y0)) & (X0 @ Y0)) | ((X1 @ Y0) & (~ (X0 @ Y0)))) | ((X1 @ Y0) & (X0 @ Y0)))) = (^[Y0 : a]: ((X0 @ Y0) | (X1 @ Y0))))),
% 1.40/1.28    inference(fool_elimination,[status(thm)],[f4])).
% 1.40/1.28  thf(f4,plain,(
% 1.40/1.28    ~! [X0 : a > $o,X1 : a > $o] : ((^[X2 : a] : ((X1 @ X2) | (X0 @ X2))) = (^[X3 : a] : (((X0 @ X3) & (X1 @ X3)) | (~(X0 @ X3) & (X1 @ X3)) | ((X0 @ X3) & ~(X1 @ X3)))))),
% 1.40/1.28    inference(rectify,[status(thm)],[f2])).
% 1.40/1.28  thf(f2,negated_conjecture,(
% 1.40/1.28    ~! [X0 : a > $o,X1 : a > $o] : ((^[X2 : a] : ((X1 @ X2) | (X0 @ X2))) = (^[X2 : a] : (((X0 @ X2) & (X1 @ X2)) | (~(X0 @ X2) & (X1 @ X2)) | ((X0 @ X2) & ~(X1 @ X2)))))),
% 1.40/1.28    inference(negated_conjecture,[status(cth)],[f1])).
% 1.40/1.28  thf(f1,conjecture,(
% 1.40/1.28    ! [X0 : a > $o,X1 : a > $o] : ((^[X2 : a] : ((X1 @ X2) | (X0 @ X2))) = (^[X2 : a] : (((X0 @ X2) & (X1 @ X2)) | (~(X0 @ X2) & (X1 @ X2)) | ((X0 @ X2) & ~(X1 @ X2)))))),
% 1.40/1.28    file('/export/starexec/sandbox/tmp/tmp.eO2UpsHPwy/DTF2THF_1470.p',cBOOL_PROP_95_pme)).
% 1.40/1.28  thf(f97,plain,(
% 1.40/1.28    spl2_4 | spl2_3),
% 1.40/1.28    inference(avatar_split_clause,[status(thm)],[f26,f79,f84])).
% 1.40/1.28  thf(f26,plain,(
% 1.40/1.28    ($false = (sK0 @ sK4)) | ((sK1 @ sK4) = $false)),
% 1.40/1.28    inference(duplicate_literal_removal,[status(thm)],[f25])).
% 1.40/1.28  thf(f25,plain,(
% 1.40/1.28    ($false = (sK0 @ sK4)) | ((sK1 @ sK4) = $false) | ($false = (sK0 @ sK4))),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f16])).
% 1.40/1.28  thf(f16,plain,(
% 1.40/1.28    ($false = (sK0 @ sK4)) | ($false = ((sK1 @ sK4) & (sK0 @ sK4)))),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f15])).
% 1.40/1.28  thf(f95,plain,(
% 1.40/1.28    spl2_1 | spl2_4),
% 1.40/1.28    inference(avatar_split_clause,[status(thm)],[f35,f84,f71])).
% 1.40/1.28  thf(f35,plain,(
% 1.40/1.28    ($true = (sK0 @ sK4)) | ((sK1 @ sK4) = $false)),
% 1.40/1.28    inference(not_proxy_clausification,[status(thm)],[f34])).
% 1.40/1.28  thf(f34,plain,(
% 1.40/1.28    ((~ (sK0 @ sK4)) = $false) | ((sK1 @ sK4) = $false)),
% 1.40/1.28    inference(duplicate_literal_removal,[status(thm)],[f33])).
% 1.40/1.28  thf(f33,plain,(
% 1.40/1.28    ((~ (sK0 @ sK4)) = $false) | ((sK1 @ sK4) = $false) | ((sK1 @ sK4) = $false)),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f29])).
% 1.40/1.28  thf(f29,plain,(
% 1.40/1.28    (((sK1 @ sK4) & (~ (sK0 @ sK4))) = $false) | ((sK1 @ sK4) = $false)),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f28])).
% 1.40/1.28  thf(f28,plain,(
% 1.40/1.28    ((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) = $false) | ((sK1 @ sK4) = $false)),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f14])).
% 1.40/1.28  thf(f14,plain,(
% 1.40/1.28    ((sK1 @ sK4) = $false) | (((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) | ((sK1 @ sK4) & (sK0 @ sK4))) = $false)),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f13])).
% 1.40/1.28  thf(f91,plain,(
% 1.40/1.28    spl2_2 | spl2_1),
% 1.40/1.28    inference(avatar_split_clause,[status(thm)],[f54,f71,f75])).
% 1.40/1.28  thf(f54,plain,(
% 1.40/1.28    ($true = (sK0 @ sK4)) | ((sK1 @ sK4) = $true)),
% 1.40/1.28    inference(duplicate_literal_removal,[status(thm)],[f53])).
% 1.40/1.28  thf(f53,plain,(
% 1.40/1.28    ((sK1 @ sK4) = $true) | ((sK1 @ sK4) = $true) | ($true = (sK0 @ sK4))),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f51])).
% 1.40/1.28  thf(f51,plain,(
% 1.40/1.28    ((sK1 @ sK4) = $true) | (((sK1 @ sK4) & (~ (sK0 @ sK4))) = $true) | ($true = (sK0 @ sK4))),
% 1.40/1.28    inference(duplicate_literal_removal,[status(thm)],[f44])).
% 1.40/1.28  thf(f44,plain,(
% 1.40/1.28    ((sK1 @ sK4) = $true) | (((sK1 @ sK4) & (~ (sK0 @ sK4))) = $true) | ($true = (sK0 @ sK4)) | ($true = (sK0 @ sK4))),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f43])).
% 1.40/1.28  thf(f43,plain,(
% 1.40/1.28    (((~ (sK1 @ sK4)) & (sK0 @ sK4)) = $true) | (((sK1 @ sK4) & (~ (sK0 @ sK4))) = $true) | ((sK1 @ sK4) = $true) | ($true = (sK0 @ sK4))),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f42])).
% 1.40/1.28  thf(f42,plain,(
% 1.40/1.28    ((sK1 @ sK4) = $true) | ($true = (sK0 @ sK4)) | ((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) = $true)),
% 1.40/1.28    inference(duplicate_literal_removal,[status(thm)],[f41])).
% 1.40/1.28  thf(f41,plain,(
% 1.40/1.28    ($true = (sK0 @ sK4)) | ((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) = $true) | ((sK1 @ sK4) = $true) | ((sK1 @ sK4) = $true)),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f39])).
% 1.40/1.28  thf(f39,plain,(
% 1.40/1.28    ((sK1 @ sK4) = $true) | (((sK1 @ sK4) & (sK0 @ sK4)) = $true) | ($true = (sK0 @ sK4)) | ((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) = $true)),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f38])).
% 1.40/1.28  thf(f38,plain,(
% 1.40/1.28    ($true = (sK0 @ sK4)) | (((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) | ((sK1 @ sK4) & (sK0 @ sK4))) = $true) | ((sK1 @ sK4) = $true)),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f12])).
% 1.40/1.28  thf(f12,plain,(
% 1.40/1.28    (((sK0 @ sK4) | (sK1 @ sK4)) = $true) | (((((~ (sK1 @ sK4)) & (sK0 @ sK4)) | ((sK1 @ sK4) & (~ (sK0 @ sK4)))) | ((sK1 @ sK4) & (sK0 @ sK4))) = $true)),
% 1.40/1.28    inference(binary_proxy_clausification,[status(thm)],[f11])).
% 1.40/1.28  % SZS output end Proof for DTF2THF_1470
% 1.40/1.28  % (1573)------------------------------
% 1.40/1.28  % (1573)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.40/1.28  % (1573)Termination reason: Refutation
% 1.40/1.28  
% 1.40/1.28  % (1573)Memory used [KB]: 5500
% 1.40/1.28  % (1573)Time elapsed: 0.005 s
% 1.40/1.28  % (1573)Instructions burned: 4 (million)
% 1.40/1.28  % (1573)------------------------------
% 1.40/1.28  % (1573)------------------------------
% 1.40/1.28  % (1567)Success in time 0.018 s
%------------------------------------------------------------------------------