↑ Up

DT2H2X---1.9.5.THM-Ref.s

View TPTP
Problem
Process solution in
SystemOnTSTP
Download .tgz
%------------------------------------------------------------------------------
% File     : DT2H2X---1.9.5
% Problem  : SEV116^5 : TPTP v9.2.1. Bugfixed v5.2.0.
% 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 09:40:19 AM UTC 2026

% Result   : Theorem 1.64s 1.36s
% Output   : Refutation 1.64s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   20
%            Number of leaves      :    2
% Syntax   : Number of formulae    :   26 (  23 unt;   0 typ;   0 def)
%            Number of atoms       :  232 (  22 equ;   0 cnn)
%            Maximal formula atoms :   11 (   8 avg)
%            Number of connectives :  365 (   6   ~;   0   |;  41   &; 252   @)
%                                         (   0 <=>;  41  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    7 (   2 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :  131 ( 131   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   10 (   6 usr;   5 con; 0-3 aty)
%                                         (  25  !!;   0  ??;   0 @@+;   0 @@-)
%            Number of variables   :   63 (  59   ^;   4   !;   0   ?;  63   :)

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

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

thf(func_def_17,type,
    ph1: 
      !>[X0: $tType] : X0 ).

thf(func_def_18,type,
    sK2: $i > $i > $o ).

thf(f54,plain,
    $false,
    inference(trivial_inequality_removal,[status(thm)],[f53]) ).

thf(f53,plain,
    $true = $false,
    inference(forward_demodulation,[status(thm)],[f52,f16]) ).

thf(f16,plain,
    ( ( !! @ ( $i > $i > $o )
      @ ^ [Y0: $i > $i > $o] :
          ( ( ( Y0 @ y @ x )
            & ( cS @ Y0 ) )
         => ( Y0 @ x @ y ) ) )
    = $false ),
    inference(binary_proxy_clausification,[status(thm)],[f13]) ).

thf(f13,plain,
    ( ( ( ( !! @ ( $i > $i > $o )
          @ ^ [Y0: $i > $i > $o] :
              ( ( ( Y0 @ x @ y )
                & ( cS @ Y0 ) )
             => ( Y0 @ y @ x ) ) )
        & ( cS
          @ ^ [Y0: $i,Y1: $i] :
              ( !! @ ( $i > $i > $o )
              @ ^ [Y2: $i > $i > $o] :
                  ( ( ( Y2 @ Y0 @ Y1 )
                    & ( cS @ Y2 ) )
                 => ( Y2 @ Y1 @ Y0 ) ) ) ) )
     => ( !! @ ( $i > $i > $o )
        @ ^ [Y0: $i > $i > $o] :
            ( ( ( Y0 @ y @ x )
              & ( cS @ Y0 ) )
           => ( Y0 @ x @ y ) ) ) )
    = $false ),
    inference(not_proxy_clausification,[status(thm)],[f12]) ).

thf(f12,plain,
    ( $true
    = ( ~ ( ( ( !! @ ( $i > $i > $o )
              @ ^ [Y0: $i > $i > $o] :
                  ( ( ( Y0 @ x @ y )
                    & ( cS @ Y0 ) )
                 => ( Y0 @ y @ x ) ) )
            & ( cS
              @ ^ [Y0: $i,Y1: $i] :
                  ( !! @ ( $i > $i > $o )
                  @ ^ [Y2: $i > $i > $o] :
                      ( ( ( Y2 @ Y0 @ Y1 )
                        & ( cS @ Y2 ) )
                     => ( Y2 @ Y1 @ Y0 ) ) ) ) )
         => ( !! @ ( $i > $i > $o )
            @ ^ [Y0: $i > $i > $o] :
                ( ( ( Y0 @ y @ x )
                  & ( cS @ Y0 ) )
               => ( Y0 @ x @ y ) ) ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f11]) ).

thf(f11,plain,
    ( $true
    = ( ~ ( ( ( ^ [Y0: ( $i > $i > $o ) > $o,Y1: $i,Y2: $i] :
                  ( !! @ ( $i > $i > $o )
                  @ ^ [Y3: $i > $i > $o] :
                      ( ( ( Y3 @ Y1 @ Y2 )
                        & ( Y0 @ Y3 ) )
                     => ( Y3 @ Y2 @ Y1 ) ) )
              @ cS
              @ x
              @ y )
            & ( cS
              @ ( ^ [Y0: ( $i > $i > $o ) > $o,Y1: $i,Y2: $i] :
                    ( !! @ ( $i > $i > $o )
                    @ ^ [Y3: $i > $i > $o] :
                        ( ( ( Y3 @ Y1 @ Y2 )
                          & ( Y0 @ Y3 ) )
                       => ( Y3 @ Y2 @ Y1 ) ) )
                @ cS ) ) )
         => ( ^ [Y0: ( $i > $i > $o ) > $o,Y1: $i,Y2: $i] :
                ( !! @ ( $i > $i > $o )
                @ ^ [Y3: $i > $i > $o] :
                    ( ( ( Y3 @ Y1 @ Y2 )
                      & ( Y0 @ Y3 ) )
                   => ( Y3 @ Y2 @ Y1 ) ) )
            @ cS
            @ y
            @ x ) ) ) ),
    inference(definition_unfolding,[status(thm)],[f9,f10,f10,f10]) ).

thf(f10,plain,
    ( cSTRANGE_HO_ABBR
    = ( ^ [Y0: ( $i > $i > $o ) > $o,Y1: $i,Y2: $i] :
          ( !! @ ( $i > $i > $o )
          @ ^ [Y3: $i > $i > $o] :
              ( ( ( Y3 @ Y1 @ Y2 )
                & ( Y0 @ Y3 ) )
             => ( Y3 @ Y2 @ Y1 ) ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f6]) ).

thf(f6,plain,
    ( cSTRANGE_HO_ABBR
    = ( ^ [Y0: ( $i > $i > $o ) > $o,Y1: $i,Y2: $i] :
          ( !! @ ( $i > $i > $o )
          @ ^ [Y3: $i > $i > $o] :
              ( ( ( Y3 @ Y1 @ Y2 )
                & ( Y0 @ Y3 ) )
             => ( Y3 @ Y2 @ Y1 ) ) ) ) ),
    inference(fool_elimination,[status(thm)],[f5]) ).

thf(f5,plain,
    ( ( ^ [X0: ( $i > $i > $o ) > $o,X1: $i,X2: $i] :
        ! [X3: $i > $i > $o] :
          ( ( ( X0 @ X3 )
            & ( X3 @ X1 @ X2 ) )
         => ( X3 @ X2 @ X1 ) ) )
    = cSTRANGE_HO_ABBR ),
    inference(rectify,[status(thm)],[f1]) ).

thf(f1,axiom,
    ( ( ^ [X0: ( $i > $i > $o ) > $o,X1: $i,X2: $i] :
        ! [X3: $i > $i > $o] :
          ( ( ( X0 @ X3 )
            & ( X3 @ X1 @ X2 ) )
         => ( X3 @ X2 @ X1 ) ) )
    = cSTRANGE_HO_ABBR ),
    file('/export/starexec/sandbox2/tmp/tmp.9wb91CugNL/DTF2THF_19166.p',cSTRANGE_HO_ABBR_def) ).

thf(f9,plain,
    ( $true
    = ( ~ ( ( ( cSTRANGE_HO_ABBR @ cS @ x @ y )
            & ( cS @ ( cSTRANGE_HO_ABBR @ cS ) ) )
         => ( cSTRANGE_HO_ABBR @ cS @ y @ x ) ) ) ),
    inference(cnf_transformation,[status(thm)],[f8]) ).

thf(f8,plain,
    ( $true
    = ( ~ ( ( ( cSTRANGE_HO_ABBR @ cS @ x @ y )
            & ( cS @ ( cSTRANGE_HO_ABBR @ cS ) ) )
         => ( cSTRANGE_HO_ABBR @ cS @ y @ x ) ) ) ),
    inference(fool_elimination,[status(thm)],[f7]) ).

thf(f7,plain,
    ~ ( ( ( cS @ ( cSTRANGE_HO_ABBR @ cS ) )
        & ( cSTRANGE_HO_ABBR @ cS @ x @ y ) )
     => ( cSTRANGE_HO_ABBR @ cS @ y @ x ) ),
    inference(rectify,[status(thm)],[f3]) ).

thf(f3,negated_conjecture,
    ~ ( ( ( cS @ ( cSTRANGE_HO_ABBR @ cS ) )
        & ( cSTRANGE_HO_ABBR @ cS @ x @ y ) )
     => ( cSTRANGE_HO_ABBR @ cS @ y @ x ) ),
    inference(negated_conjecture,[status(cth)],[f2]) ).

thf(f2,conjecture,
    ( ( ( cS @ ( cSTRANGE_HO_ABBR @ cS ) )
      & ( cSTRANGE_HO_ABBR @ cS @ x @ y ) )
   => ( cSTRANGE_HO_ABBR @ cS @ y @ x ) ),
    file('/export/starexec/sandbox2/tmp/tmp.9wb91CugNL/DTF2THF_19166.p',cSTRANGE_HO_EXAMPLE) ).

thf(f52,plain,
    ( $true
    = ( !! @ ( $i > $i > $o )
      @ ^ [Y0: $i > $i > $o] :
          ( ( ( Y0 @ y @ x )
            & ( cS @ Y0 ) )
         => ( Y0 @ x @ y ) ) ) ),
    inference(boolean_simplification,[status(thm)],[f51]) ).

thf(f51,plain,
    ( $true
    = ( $true
     => ( !! @ ( $i > $i > $o )
        @ ^ [Y0: $i > $i > $o] :
            ( ( ( Y0 @ y @ x )
              & ( cS @ Y0 ) )
           => ( Y0 @ x @ y ) ) ) ) ),
    inference(forward_demodulation,[status(thm)],[f50,f35]) ).

thf(f35,plain,
    ( $true
    = ( !! @ ( $i > $i > $o )
      @ ^ [Y0: $i > $i > $o] :
          ( ( ( Y0 @ x @ y )
            & ( cS @ Y0 ) )
         => ( Y0 @ y @ x ) ) ) ),
    inference(boolean_simplification,[status(thm)],[f34]) ).

thf(f34,plain,
    ( $true
    = ( ( !! @ ( $i > $i > $o )
        @ ^ [Y0: $i > $i > $o] :
            ( ( ( Y0 @ x @ y )
              & ( cS @ Y0 ) )
           => ( Y0 @ y @ x ) ) )
      & $true ) ),
    inference(backward_demodulation,[status(thm)],[f17,f32]) ).

thf(f32,plain,
    ( $true
    = ( cS
      @ ^ [Y0: $i,Y1: $i] :
          ( !! @ ( $i > $i > $o )
          @ ^ [Y2: $i > $i > $o] :
              ( ( ( Y2 @ Y0 @ Y1 )
                & ( cS @ Y2 ) )
             => ( Y2 @ Y1 @ Y0 ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f17]) ).

thf(f17,plain,
    ( $true
    = ( ( !! @ ( $i > $i > $o )
        @ ^ [Y0: $i > $i > $o] :
            ( ( ( Y0 @ x @ y )
              & ( cS @ Y0 ) )
           => ( Y0 @ y @ x ) ) )
      & ( cS
        @ ^ [Y0: $i,Y1: $i] :
            ( !! @ ( $i > $i > $o )
            @ ^ [Y2: $i > $i > $o] :
                ( ( ( Y2 @ Y0 @ Y1 )
                  & ( cS @ Y2 ) )
               => ( Y2 @ Y1 @ Y0 ) ) ) ) ) ),
    inference(binary_proxy_clausification,[status(thm)],[f13]) ).

thf(f50,plain,
    ( $true
    = ( ( !! @ ( $i > $i > $o )
        @ ^ [Y0: $i > $i > $o] :
            ( ( ( Y0 @ x @ y )
              & ( cS @ Y0 ) )
           => ( Y0 @ y @ x ) ) )
     => ( !! @ ( $i > $i > $o )
        @ ^ [Y0: $i > $i > $o] :
            ( ( ( Y0 @ y @ x )
              & ( cS @ Y0 ) )
           => ( Y0 @ x @ y ) ) ) ) ),
    inference(boolean_simplification,[status(thm)],[f49]) ).

thf(f49,plain,
    ( $true
    = ( ( ( !! @ ( $i > $i > $o )
          @ ^ [Y0: $i > $i > $o] :
              ( ( ( Y0 @ x @ y )
                & ( cS @ Y0 ) )
             => ( Y0 @ y @ x ) ) )
        & $true )
     => ( !! @ ( $i > $i > $o )
        @ ^ [Y0: $i > $i > $o] :
            ( ( ( Y0 @ y @ x )
              & ( cS @ Y0 ) )
           => ( Y0 @ x @ y ) ) ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f48]) ).

thf(f48,plain,
    ( $true
    = ( ( ( ^ [Y0: $i,Y1: $i] :
              ( !! @ ( $i > $i > $o )
              @ ^ [Y2: $i > $i > $o] :
                  ( ( ( Y2 @ Y0 @ Y1 )
                    & ( cS @ Y2 ) )
                 => ( Y2 @ Y1 @ Y0 ) ) )
          @ x
          @ y )
        & $true )
     => ( ^ [Y0: $i,Y1: $i] :
            ( !! @ ( $i > $i > $o )
            @ ^ [Y2: $i > $i > $o] :
                ( ( ( Y2 @ Y0 @ Y1 )
                  & ( cS @ Y2 ) )
               => ( Y2 @ Y1 @ Y0 ) ) )
        @ y
        @ x ) ) ),
    inference(superposition,[status(thm)],[f37,f32]) ).

thf(f37,plain,
    ! [X1: $i > $i > $o] :
      ( $true
      = ( ( ( X1 @ x @ y )
          & ( cS @ X1 ) )
       => ( X1 @ y @ x ) ) ),
    inference(beta_eta_normalization,[status(thm)],[f36]) ).

thf(f36,plain,
    ! [X1: $i > $i > $o] :
      ( $true
      = ( ^ [Y0: $i > $i > $o] :
            ( ( ( Y0 @ x @ y )
              & ( cS @ Y0 ) )
           => ( Y0 @ y @ x ) )
        @ X1 ) ),
    inference(pi_clausification,[status(thm)],[f35]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.11  % Problem  : SEV116^5 : TPTP v9.2.1. Bugfixed v5.2.0.
% 0.00/0.13  % Command  : /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.16/0.32  % Computer : n022.cluster.edu
% 0.16/0.32  % Model    : x86_64 x86_64
% 0.16/0.32  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.16/0.32  % Memory   : 8042.1875MB
% 0.16/0.32  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.16/0.32  % CPULimit : 300
% 0.16/0.32  % WCLimit  : 300
% 0.16/0.32  % DateTime : Tue Feb 24 12:40:21 EST 2026
% 0.16/0.32  % CPUTime  : 
% 0.16/0.32  Running /export/starexec/sandbox2/solver/bin/run_DT2H2X /export/starexec/sandbox2/benchmark/theBenchmark.p 300
% 0.20/0.44  ---- Original DTF file ---
% 0.20/0.44  thf(spec,logic,$$dhol).
% 0.20/0.44  %------------------------------------------------------------------------------
% 0.20/0.44  % File     : SEV116^5 : TPTP v9.2.1. Bugfixed v5.2.0.
% 0.20/0.44  % Domain   : Set Theory (Relations)
% 0.20/0.44  % Problem  : TPS problem STRANGE-HO-EXAMPLE
% 0.20/0.44  % Version  : Especial.
% 0.20/0.44  % English  : 
% 0.20/0.44  
% 0.20/0.44  % Refs     : [Bro09] Brown (2009), Email to Geoff Sutcliffe
% 0.20/0.44  % Source   : [Bro09]
% 0.20/0.44  % Names    : tps_0073 [Bro09]
% 0.20/0.44  %          : STRANGE-HO-EXAMPLE [TPS]
% 0.20/0.44  
% 0.20/0.44  % Status   : Theorem
% 0.20/0.44  % Rating   : 0.00 v8.2.0, 0.08 v8.1.0, 0.00 v7.4.0, 0.11 v7.2.0, 0.12 v7.1.0, 0.00 v6.2.0, 0.29 v6.1.0, 0.14 v6.0.0, 0.29 v5.5.0, 0.33 v5.4.0, 0.40 v5.2.0
% 0.20/0.44  % Syntax   : Number of formulae    :    6 (   1 unt;   4 typ;   1 def)
% 0.20/0.44  %            Number of atoms       :    9 (   1 equ;   0 cnn)
% 0.20/0.44  %            Maximal formula atoms :    7 (   4 avg)
% 0.20/0.44  %            Number of connectives :   17 (   0   ~;   0   |;   2   &;  13   @)
% 0.20/0.44  %                                         (   0 <=>;   2  =>;   0  <=;   0 <~>)
% 0.20/0.44  %            Maximal formula depth :    6 (   4 avg)
% 0.20/0.44  %            Number of types       :    2 (   0 usr)
% 0.20/0.44  %            Number of type conns  :   14 (  14   >;   0   *;   0   +;   0  <<)
% 0.20/0.44  %            Number of symbols     :    5 (   4 usr;   2 con; 0-3 aty)
% 0.20/0.44  %            Number of variables   :    4 (   3   ^;   1   !;   0   ?;   4   :)
% 0.20/0.44  % SPC      : TH0_THM_EQU_NAR
% 0.20/0.44  
% 0.20/0.44  % Comments : This problem is from the TPS library. Copyright (c) 2009 The TPS
% 0.20/0.44  %            project in the Department of Mathematical Sciences at Carnegie
% 0.20/0.44  %            Mellon University. Distributed under the Creative Commons copyleft
% 0.20/0.44  %            license: http://creativecommons.org/licenses/by-sa/3.0/
% 0.20/0.44  % Bugfixes : v5.2.0 - Added missing type declarations.
% 0.20/0.44  %------------------------------------------------------------------------------
% 0.20/0.44  thf(cS_type,type,
% 0.20/0.44      cS: ( $i > $i > $o ) > $o ).
% 0.20/0.44  
% 0.20/0.44  thf(x_type,type,
% 0.20/0.44      x: $i ).
% 0.20/0.44  
% 0.20/0.44  thf(y_type,type,
% 0.20/0.44      y: $i ).
% 0.20/0.44  
% 0.20/0.44  thf(cSTRANGE_HO_ABBR_type,type,
% 0.20/0.44      cSTRANGE_HO_ABBR: ( ( $i > $i > $o ) > $o ) > $i > $i > $o ).
% 0.20/0.44  
% 0.20/0.44  thf(cSTRANGE_HO_ABBR_def,definition,
% 0.20/0.44      ( cSTRANGE_HO_ABBR
% 0.20/0.44      = ( ^ [S: ( $i > $i > $o ) > $o,Xx: $i,Xy: $i] :
% 0.20/0.44          ! [Xp: $i > $i > $o] :
% 0.20/0.44            ( ( ( S @ Xp )
% 0.20/0.44              & ( Xp @ Xx @ Xy ) )
% 0.20/0.44           => ( Xp @ Xy @ Xx ) ) ) ) ).
% 0.20/0.44  
% 0.20/0.44  thf(cSTRANGE_HO_EXAMPLE,conjecture,
% 0.20/0.44      ( ( ( cS @ ( cSTRANGE_HO_ABBR @ cS ) )
% 0.20/0.44        & ( cSTRANGE_HO_ABBR @ cS @ x @ y ) )
% 0.20/0.44     => ( cSTRANGE_HO_ABBR @ cS @ y @ x ) ) ).
% 0.20/0.44  
% 0.20/0.44  %------------------------------------------------------------------------------
% 0.20/0.44  ------------------------
% 1.45/1.27  ---- Embedded in THF ---
% 1.45/1.27  %%% This output was generated by embedproblem, version 1.9.5 (library version 1.9).
% 1.45/1.27  %%% Generated on Tue Feb 24 12:40:22 EST 2026
% 1.45/1.27  %%% using '$$dhol' embedding, version 1.3.0.
% 1.45/1.27  %%% Logic specification used:
% 1.45/1.27  %%% thf(spec, logic, $$dhol).
% 1.45/1.27  
% 1.45/1.27  % SZS output start ListOfTHF for /export/starexec/sandbox2/tmp/tmp.9wb91CugNL/DTF2DTF19166.p
% See solution above
% 1.45/1.27  ------------------------
% 1.45/1.28  ---- Cleaned THF ---
% 1.45/1.28  thf(cS_type,type,
% 1.45/1.28      cS: ( $i > $i > $o ) > $o ).
% 1.45/1.28  
% 1.45/1.28  thf(x_type,type,
% 1.45/1.28      x: $i ).
% 1.45/1.28  
% 1.45/1.28  thf(y_type,type,
% 1.45/1.28      y: $i ).
% 1.45/1.28  
% 1.45/1.28  thf(cSTRANGE_HO_ABBR_type,type,
% 1.45/1.28      cSTRANGE_HO_ABBR: ( ( $i > $i > $o ) > $o ) > $i > $i > $o ).
% 1.45/1.28  
% 1.45/1.28  thf(cSTRANGE_HO_ABBR_def,definition,
% 1.45/1.28      ( cSTRANGE_HO_ABBR
% 1.45/1.28      = ( ^ [S: ( $i > $i > $o ) > $o,Xx: $i,Xy: $i] :
% 1.45/1.28          ! [Xp: $i > $i > $o] :
% 1.45/1.28            ( ( ( S @ Xp )
% 1.45/1.28              & ( Xp @ Xx @ Xy ) )
% 1.45/1.28           => ( Xp @ Xy @ Xx ) ) ) ) ).
% 1.45/1.28  
% 1.45/1.28  thf(cSTRANGE_HO_EXAMPLE,conjecture,
% 1.45/1.28      ( ( ( cS @ ( cSTRANGE_HO_ABBR @ cS ) )
% 1.45/1.28        & ( cSTRANGE_HO_ABBR @ cS @ x @ y ) )
% 1.45/1.28     => ( cSTRANGE_HO_ABBR @ cS @ y @ x ) ) ).
% 1.45/1.28  ------------------------
% 1.45/1.29  % (19325)lrs+1002_1:8_bd=off:fd=off:hud=10:tnu=1:i=183:si=on:rtra=on_0 on DTF2THF_19166 for (3000ds/183Mi)
% 1.64/1.30  % (19331)lrs+1004_1:128_cond=on:e2e=on:sp=weighted_frequency:i=18:si=on:rtra=on_0 on DTF2THF_19166 for (3000ds/18Mi)
% 1.64/1.30  % (19330)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_19166 for (3000ds/275Mi)
% 1.64/1.30  % (19330)Refutation not found, incomplete strategy
% 1.64/1.30  % (19330)------------------------------
% 1.64/1.30  % (19330)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.30  % (19330)Termination reason: Refutation not found, incomplete strategy
% 1.64/1.30  
% 1.64/1.30  
% 1.64/1.30  % (19330)Memory used [KB]: 5500
% 1.64/1.30  % (19330)Time elapsed: 0.003 s
% 1.64/1.30  % (19330)Instructions burned: 2 (million)
% 1.64/1.30  % (19330)------------------------------
% 1.64/1.30  % (19330)------------------------------
% 1.64/1.31  % (19326)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_19166 for (3000ds/4Mi)
% 1.64/1.31  % (19331)Instruction limit reached!
% 1.64/1.31  % (19331)------------------------------
% 1.64/1.31  % (19331)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.31  % (19331)Termination reason: Unknown
% 1.64/1.31  % (19331)Termination phase: Saturation
% 1.64/1.31  
% 1.64/1.31  % (19331)Memory used [KB]: 5628
% 1.64/1.31  % (19331)Time elapsed: 0.011 s
% 1.64/1.31  % (19331)Instructions burned: 19 (million)
% 1.64/1.31  % (19331)------------------------------
% 1.64/1.31  % (19331)------------------------------
% 1.64/1.31  % (19327)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_19166 for (3000ds/27Mi)
% 1.64/1.31  % (19326)Instruction limit reached!
% 1.64/1.31  % (19326)------------------------------
% 1.64/1.31  % (19326)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.31  % (19326)Termination reason: Unknown
% 1.64/1.31  % (19326)Termination phase: Saturation
% 1.64/1.31  
% 1.64/1.31  % (19326)Memory used [KB]: 5500
% 1.64/1.31  % (19326)Time elapsed: 0.004 s
% 1.64/1.31  % (19326)Instructions burned: 4 (million)
% 1.64/1.31  % (19326)------------------------------
% 1.64/1.31  % (19326)------------------------------
% 1.64/1.31  % (19328)lrs+10_1:1_au=on:inj=on:i=2:si=on:rtra=on_0 on DTF2THF_19166 for (3000ds/2Mi)
% 1.64/1.31  % (19327)Refutation not found, incomplete strategy
% 1.64/1.31  % (19327)------------------------------
% 1.64/1.31  % (19327)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.31  % (19327)Termination reason: Refutation not found, incomplete strategy
% 1.64/1.31  
% 1.64/1.31  
% 1.64/1.31  % (19327)Memory used [KB]: 5500
% 1.64/1.31  % (19327)Time elapsed: 0.005 s
% 1.64/1.31  % (19327)Instructions burned: 3 (million)
% 1.64/1.31  % (19328)Instruction limit reached!
% 1.64/1.31  % (19328)------------------------------
% 1.64/1.31  % (19328)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.31  % (19328)Termination reason: Unknown
% 1.64/1.31  % (19328)Termination phase: Saturation
% 1.64/1.31  
% 1.64/1.31  % (19328)Memory used [KB]: 895
% 1.64/1.31  % (19328)Time elapsed: 0.004 s
% 1.64/1.31  % (19328)Instructions burned: 2 (million)
% 1.64/1.31  % (19328)------------------------------
% 1.64/1.31  % (19328)------------------------------
% 1.64/1.31  % (19327)------------------------------
% 1.64/1.31  % (19327)------------------------------
% 1.64/1.31  % (19329)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_19166 for (3000ds/2Mi)
% 1.64/1.31  % (19329)Instruction limit reached!
% 1.64/1.31  % (19329)------------------------------
% 1.64/1.31  % (19329)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.31  % (19329)Termination reason: Unknown
% 1.64/1.31  % (19329)Termination phase: Saturation
% 1.64/1.31  
% 1.64/1.31  % (19329)Memory used [KB]: 5500
% 1.64/1.31  % (19329)Time elapsed: 0.005 s
% 1.64/1.31  % (19329)Instructions burned: 2 (million)
% 1.64/1.31  % (19329)------------------------------
% 1.64/1.31  % (19329)------------------------------
% 1.64/1.32  % (19335)lrs+10_1:1_bet=on:cnfonf=off:fd=off:hud=5:inj=on:i=3:si=on:rtra=on_0 on DTF2THF_19166 for (2999ds/3Mi)
% 1.64/1.32  % (19337)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_19166 for (2999ds/37Mi)
% 1.64/1.32  % (19335)Instruction limit reached!
% 1.64/1.32  % (19335)------------------------------
% 1.64/1.32  % (19335)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.32  % (19335)Termination reason: Unknown
% 1.64/1.32  % (19335)Termination phase: Saturation
% 1.64/1.32  
% 1.64/1.32  % (19335)Memory used [KB]: 5500
% 1.64/1.32  % (19335)Time elapsed: 0.003 s
% 1.64/1.32  % (19335)Instructions burned: 3 (million)
% 1.64/1.32  % (19335)------------------------------
% 1.64/1.32  % (19335)------------------------------
% 1.64/1.33  % (19338)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_19166 for (2999ds/15Mi)
% 1.64/1.33  % (19338)Refutation not found, incomplete strategy
% 1.64/1.33  % (19338)------------------------------
% 1.64/1.33  % (19338)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.33  % (19338)Termination reason: Refutation not found, incomplete strategy
% 1.64/1.33  
% 1.64/1.33  
% 1.64/1.33  % (19338)Memory used [KB]: 5628
% 1.64/1.33  % (19338)Time elapsed: 0.005 s
% 1.64/1.33  % (19338)Instructions burned: 5 (million)
% 1.64/1.33  % (19338)------------------------------
% 1.64/1.33  % (19338)------------------------------
% 1.64/1.34  % (19341)lrs+10_1:1_av=off:chr=on:plsq=on:slsq=on:i=7:si=on:rtra=on_0 on DTF2THF_19166 for (2999ds/7Mi)
% 1.64/1.34  % (19344)lrs+10_1:1_acc=on:amm=sco:cs=on:tgt=full:i=16:si=on:rtra=on_0 on DTF2THF_19166 for (2999ds/16Mi)
% 1.64/1.34  % (19341)Instruction limit reached!
% 1.64/1.34  % (19341)------------------------------
% 1.64/1.34  % (19341)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.34  % (19341)Termination reason: Unknown
% 1.64/1.34  % (19341)Termination phase: Saturation
% 1.64/1.34  
% 1.64/1.34  % (19341)Memory used [KB]: 1023
% 1.64/1.34  % (19341)Time elapsed: 0.006 s
% 1.64/1.34  % (19341)Instructions burned: 7 (million)
% 1.64/1.34  % (19341)------------------------------
% 1.64/1.34  % (19341)------------------------------
% 1.64/1.34  % (19339)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_19166 for (2999ds/3Mi)
% 1.64/1.34  % (19347)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_19166 for (2999ds/3Mi)
% 1.64/1.34  % (19340)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_19166 for (2999ds/1041Mi)
% 1.64/1.34  % (19337)Instruction limit reached!
% 1.64/1.34  % (19337)------------------------------
% 1.64/1.34  % (19337)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.34  % (19337)Termination reason: Unknown
% 1.64/1.34  % (19337)Termination phase: Saturation
% 1.64/1.34  
% 1.64/1.34  % (19337)Memory used [KB]: 5756
% 1.64/1.34  % (19337)Time elapsed: 0.020 s
% 1.64/1.34  % (19337)Instructions burned: 37 (million)
% 1.64/1.34  % (19337)------------------------------
% 1.64/1.34  % (19337)------------------------------
% 1.64/1.34  % (19339)Instruction limit reached!
% 1.64/1.34  % (19339)------------------------------
% 1.64/1.34  % (19339)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.34  % (19339)Termination reason: Unknown
% 1.64/1.34  % (19339)Termination phase: Saturation
% 1.64/1.34  
% 1.64/1.34  % (19339)Memory used [KB]: 5500
% 1.64/1.34  % (19339)Time elapsed: 0.004 s
% 1.64/1.34  % (19339)Instructions burned: 3 (million)
% 1.64/1.34  % (19339)------------------------------
% 1.64/1.34  % (19339)------------------------------
% 1.64/1.34  % (19347)Instruction limit reached!
% 1.64/1.34  % (19347)------------------------------
% 1.64/1.34  % (19347)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.34  % (19347)Termination reason: Unknown
% 1.64/1.34  % (19347)Termination phase: Saturation
% 1.64/1.34  
% 1.64/1.34  % (19347)Memory used [KB]: 5500
% 1.64/1.34  % (19347)Time elapsed: 0.003 s
% 1.64/1.34  % (19347)Instructions burned: 3 (million)
% 1.64/1.34  % (19347)------------------------------
% 1.64/1.34  % (19347)------------------------------
% 1.64/1.35  % (19344)Instruction limit reached!
% 1.64/1.35  % (19344)------------------------------
% 1.64/1.35  % (19344)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.35  % (19344)Termination reason: Unknown
% 1.64/1.35  % (19344)Termination phase: Saturation
% 1.64/1.35  
% 1.64/1.35  % (19344)Memory used [KB]: 5628
% 1.64/1.35  % (19344)Time elapsed: 0.011 s
% 1.64/1.35  % (19344)Instructions burned: 17 (million)
% 1.64/1.35  % (19344)------------------------------
% 1.64/1.35  % (19344)------------------------------
% 1.64/1.35  % (19340)First to succeed.
% 1.64/1.35  % (19352)lrs+10_1:1_cnfonf=off:cs=on:hud=3:prag=on:sup=off:i=7:si=on:rtra=on_0 on DTF2THF_19166 for (2999ds/7Mi)
% 1.64/1.35  % (19352)Refutation not found, incomplete strategy
% 1.64/1.35  % (19352)------------------------------
% 1.64/1.35  % (19352)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.35  % (19352)Termination reason: Refutation not found, incomplete strategy
% 1.64/1.35  
% 1.64/1.35  
% 1.64/1.35  % (19352)Memory used [KB]: 5500
% 1.64/1.35  % (19352)Time elapsed: 0.001 s
% 1.64/1.35  % (19352)Instructions burned: 1 (million)
% 1.64/1.35  % (19352)------------------------------
% 1.64/1.35  % (19352)------------------------------
% 1.64/1.36  % (19340)Refutation found. Thanks to Tanya!
% 1.64/1.36  % SZS status Theorem for DTF2THF_19166
% 1.64/1.36  % SZS output start Proof for DTF2THF_19166
% 1.64/1.36  thf(func_def_0, type, cS: ($i > $i > $o) > $o).
% 1.64/1.36  thf(func_def_3, type, cSTRANGE_HO_ABBR: (($i > $i > $o) > $o) > $i > $i > $o).
% 1.64/1.36  thf(func_def_17, type, ph1: !>[X0: $tType]:(X0)).
% 1.64/1.36  thf(func_def_18, type, sK2: $i > $i > $o).
% 1.64/1.36  thf(f54,plain,(
% 1.64/1.36    $false),
% 1.64/1.36    inference(trivial_inequality_removal,[status(thm)],[f53])).
% 1.64/1.36  thf(f53,plain,(
% 1.64/1.36    ($true = $false)),
% 1.64/1.36    inference(forward_demodulation,[status(thm)],[f52,f16])).
% 1.64/1.36  thf(f16,plain,(
% 1.64/1.36    ((!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ y @ x) & (cS @ Y0)) => (Y0 @ x @ y)))) = $false)),
% 1.64/1.36    inference(binary_proxy_clausification,[status(thm)],[f13])).
% 1.64/1.36  thf(f13,plain,(
% 1.64/1.36    ((((!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ x @ y) & (cS @ Y0)) => (Y0 @ y @ x)))) & (cS @ (^[Y0 : $i]: ((^[Y1 : $i]: (!! @ ($i > $i > $o) @ (^[Y2 : $i > $i > $o]: (((Y2 @ Y0 @ Y1) & (cS @ Y2)) => (Y2 @ Y1 @ Y0))))))))) => (!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ y @ x) & (cS @ Y0)) => (Y0 @ x @ y))))) = $false)),
% 1.64/1.36    inference(not_proxy_clausification,[status(thm)],[f12])).
% 1.64/1.36  thf(f12,plain,(
% 1.64/1.36    ($true = (~ (((!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ x @ y) & (cS @ Y0)) => (Y0 @ y @ x)))) & (cS @ (^[Y0 : $i]: ((^[Y1 : $i]: (!! @ ($i > $i > $o) @ (^[Y2 : $i > $i > $o]: (((Y2 @ Y0 @ Y1) & (cS @ Y2)) => (Y2 @ Y1 @ Y0))))))))) => (!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ y @ x) & (cS @ Y0)) => (Y0 @ x @ y)))))))),
% 1.64/1.36    inference(beta_eta_normalization,[status(thm)],[f11])).
% 1.64/1.36  thf(f11,plain,(
% 1.64/1.36    ($true = (~ ((((^[Y0 : ($i > $i > $o) > $o]: ((^[Y1 : $i]: ((^[Y2 : $i]: (!! @ ($i > $i > $o) @ (^[Y3 : $i > $i > $o]: (((Y3 @ Y1 @ Y2) & (Y0 @ Y3)) => (Y3 @ Y2 @ Y1))))))))) @ cS @ x @ y) & (cS @ ((^[Y0 : ($i > $i > $o) > $o]: ((^[Y1 : $i]: ((^[Y2 : $i]: (!! @ ($i > $i > $o) @ (^[Y3 : $i > $i > $o]: (((Y3 @ Y1 @ Y2) & (Y0 @ Y3)) => (Y3 @ Y2 @ Y1))))))))) @ cS))) => ((^[Y0 : ($i > $i > $o) > $o]: ((^[Y1 : $i]: ((^[Y2 : $i]: (!! @ ($i > $i > $o) @ (^[Y3 : $i > $i > $o]: (((Y3 @ Y1 @ Y2) & (Y0 @ Y3)) => (Y3 @ Y2 @ Y1))))))))) @ cS @ y @ x))))),
% 1.64/1.36    inference(definition_unfolding,[status(thm)],[f9,f10,f10,f10])).
% 1.64/1.36  thf(f10,plain,(
% 1.64/1.36    (cSTRANGE_HO_ABBR = (^[Y0 : ($i > $i > $o) > $o]: ((^[Y1 : $i]: ((^[Y2 : $i]: (!! @ ($i > $i > $o) @ (^[Y3 : $i > $i > $o]: (((Y3 @ Y1 @ Y2) & (Y0 @ Y3)) => (Y3 @ Y2 @ Y1))))))))))),
% 1.64/1.36    inference(cnf_transformation,[status(thm)],[f6])).
% 1.64/1.36  thf(f6,plain,(
% 1.64/1.36    (cSTRANGE_HO_ABBR = (^[Y0 : ($i > $i > $o) > $o]: ((^[Y1 : $i]: ((^[Y2 : $i]: (!! @ ($i > $i > $o) @ (^[Y3 : $i > $i > $o]: (((Y3 @ Y1 @ Y2) & (Y0 @ Y3)) => (Y3 @ Y2 @ Y1))))))))))),
% 1.64/1.36    inference(fool_elimination,[status(thm)],[f5])).
% 1.64/1.36  thf(f5,plain,(
% 1.64/1.36    ((^[X0 : ($i > $i > $o) > $o, X1 : $i, X2 : $i] : (! [X3 : $i > $i > $o] : (((X0 @ X3) & (X3 @ X1 @ X2)) => (X3 @ X2 @ X1)))) = cSTRANGE_HO_ABBR)),
% 1.64/1.36    inference(rectify,[status(thm)],[f1])).
% 1.64/1.36  thf(f1,axiom,(
% 1.64/1.36    ((^[X0 : ($i > $i > $o) > $o, X1 : $i, X2 : $i] : (! [X3 : $i > $i > $o] : (((X0 @ X3) & (X3 @ X1 @ X2)) => (X3 @ X2 @ X1)))) = cSTRANGE_HO_ABBR)),
% 1.64/1.36    file('/export/starexec/sandbox2/tmp/tmp.9wb91CugNL/DTF2THF_19166.p',cSTRANGE_HO_ABBR_def)).
% 1.64/1.36  thf(f9,plain,(
% 1.64/1.36    ($true = (~ (((cSTRANGE_HO_ABBR @ cS @ x @ y) & (cS @ (cSTRANGE_HO_ABBR @ cS))) => (cSTRANGE_HO_ABBR @ cS @ y @ x))))),
% 1.64/1.36    inference(cnf_transformation,[status(thm)],[f8])).
% 1.64/1.36  thf(f8,plain,(
% 1.64/1.36    ($true = (~ (((cSTRANGE_HO_ABBR @ cS @ x @ y) & (cS @ (cSTRANGE_HO_ABBR @ cS))) => (cSTRANGE_HO_ABBR @ cS @ y @ x))))),
% 1.64/1.36    inference(fool_elimination,[status(thm)],[f7])).
% 1.64/1.36  thf(f7,plain,(
% 1.64/1.36    ~(((cS @ (cSTRANGE_HO_ABBR @ cS)) & (cSTRANGE_HO_ABBR @ cS @ x @ y)) => (cSTRANGE_HO_ABBR @ cS @ y @ x))),
% 1.64/1.36    inference(rectify,[status(thm)],[f3])).
% 1.64/1.36  thf(f3,negated_conjecture,(
% 1.64/1.36    ~(((cS @ (cSTRANGE_HO_ABBR @ cS)) & (cSTRANGE_HO_ABBR @ cS @ x @ y)) => (cSTRANGE_HO_ABBR @ cS @ y @ x))),
% 1.64/1.36    inference(negated_conjecture,[status(cth)],[f2])).
% 1.64/1.36  thf(f2,conjecture,(
% 1.64/1.36    ((cS @ (cSTRANGE_HO_ABBR @ cS)) & (cSTRANGE_HO_ABBR @ cS @ x @ y)) => (cSTRANGE_HO_ABBR @ cS @ y @ x)),
% 1.64/1.36    file('/export/starexec/sandbox2/tmp/tmp.9wb91CugNL/DTF2THF_19166.p',cSTRANGE_HO_EXAMPLE)).
% 1.64/1.36  thf(f52,plain,(
% 1.64/1.36    ($true = (!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ y @ x) & (cS @ Y0)) => (Y0 @ x @ y)))))),
% 1.64/1.36    inference(boolean_simplification,[status(thm)],[f51])).
% 1.64/1.36  thf(f51,plain,(
% 1.64/1.36    ($true = ($true => (!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ y @ x) & (cS @ Y0)) => (Y0 @ x @ y))))))),
% 1.64/1.36    inference(forward_demodulation,[status(thm)],[f50,f35])).
% 1.64/1.36  thf(f35,plain,(
% 1.64/1.36    ($true = (!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ x @ y) & (cS @ Y0)) => (Y0 @ y @ x)))))),
% 1.64/1.36    inference(boolean_simplification,[status(thm)],[f34])).
% 1.64/1.36  thf(f34,plain,(
% 1.64/1.36    ($true = ((!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ x @ y) & (cS @ Y0)) => (Y0 @ y @ x)))) & $true))),
% 1.64/1.36    inference(backward_demodulation,[status(thm)],[f17,f32])).
% 1.64/1.36  thf(f32,plain,(
% 1.64/1.36    ($true = (cS @ (^[Y0 : $i]: ((^[Y1 : $i]: (!! @ ($i > $i > $o) @ (^[Y2 : $i > $i > $o]: (((Y2 @ Y0 @ Y1) & (cS @ Y2)) => (Y2 @ Y1 @ Y0)))))))))),
% 1.64/1.36    inference(binary_proxy_clausification,[status(thm)],[f17])).
% 1.64/1.36  thf(f17,plain,(
% 1.64/1.36    ($true = ((!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ x @ y) & (cS @ Y0)) => (Y0 @ y @ x)))) & (cS @ (^[Y0 : $i]: ((^[Y1 : $i]: (!! @ ($i > $i > $o) @ (^[Y2 : $i > $i > $o]: (((Y2 @ Y0 @ Y1) & (cS @ Y2)) => (Y2 @ Y1 @ Y0))))))))))),
% 1.64/1.36    inference(binary_proxy_clausification,[status(thm)],[f13])).
% 1.64/1.36  thf(f50,plain,(
% 1.64/1.36    ($true = ((!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ x @ y) & (cS @ Y0)) => (Y0 @ y @ x)))) => (!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ y @ x) & (cS @ Y0)) => (Y0 @ x @ y))))))),
% 1.64/1.36    inference(boolean_simplification,[status(thm)],[f49])).
% 1.64/1.36  thf(f49,plain,(
% 1.64/1.36    ($true = (((!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ x @ y) & (cS @ Y0)) => (Y0 @ y @ x)))) & $true) => (!! @ ($i > $i > $o) @ (^[Y0 : $i > $i > $o]: (((Y0 @ y @ x) & (cS @ Y0)) => (Y0 @ x @ y))))))),
% 1.64/1.36    inference(beta_eta_normalization,[status(thm)],[f48])).
% 1.64/1.36  thf(f48,plain,(
% 1.64/1.36    ($true = ((((^[Y0 : $i]: ((^[Y1 : $i]: (!! @ ($i > $i > $o) @ (^[Y2 : $i > $i > $o]: (((Y2 @ Y0 @ Y1) & (cS @ Y2)) => (Y2 @ Y1 @ Y0))))))) @ x @ y) & $true) => ((^[Y0 : $i]: ((^[Y1 : $i]: (!! @ ($i > $i > $o) @ (^[Y2 : $i > $i > $o]: (((Y2 @ Y0 @ Y1) & (cS @ Y2)) => (Y2 @ Y1 @ Y0))))))) @ y @ x)))),
% 1.64/1.36    inference(superposition,[status(thm)],[f37,f32])).
% 1.64/1.36  thf(f37,plain,(
% 1.64/1.36    ( ! [X1 : $i > $i > $o] : (($true = (((X1 @ x @ y) & (cS @ X1)) => (X1 @ y @ x)))) )),
% 1.64/1.36    inference(beta_eta_normalization,[status(thm)],[f36])).
% 1.64/1.36  thf(f36,plain,(
% 1.64/1.36    ( ! [X1 : $i > $i > $o] : (($true = ((^[Y0 : $i > $i > $o]: (((Y0 @ x @ y) & (cS @ Y0)) => (Y0 @ y @ x))) @ X1))) )),
% 1.64/1.36    inference(pi_clausification,[status(thm)],[f35])).
% 1.64/1.36  % SZS output end Proof for DTF2THF_19166
% 1.64/1.36  % (19340)------------------------------
% 1.64/1.36  % (19340)Version: Vampire 4.8 (commit 7b44b1c2f on 2025-07-15 09:50:17 +0100)
% 1.64/1.36  % (19340)Termination reason: Refutation
% 1.64/1.36  
% 1.64/1.36  % (19340)Memory used [KB]: 5500
% 1.64/1.36  % (19340)Time elapsed: 0.015 s
% 1.64/1.36  % (19340)Instructions burned: 10 (million)
% 1.64/1.36  % (19340)------------------------------
% 1.64/1.36  % (19340)------------------------------
% 1.64/1.36  % (19324)Success in time 0.067 s
%------------------------------------------------------------------------------