TSTP Solution File: SEV246^6 by Zipperpin---2.1.9999

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Zipperpin---2.1.9999
% Problem  : SEV246^6 : TPTP v8.1.2. Released v5.1.0.
% Transfm  : NO INFORMATION
% Format   : NO INFORMATION
% Command  : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.qpGi6Esysw true

% Computer : n005.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 : Thu Aug 31 20:00:11 EDT 2023

% Result   : Theorem 50.42s 7.22s
% Output   : Refutation 50.42s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   17
%            Number of leaves      :   17
% Syntax   : Number of formulae    :   74 (  10 unt;   8 typ;   0 def)
%            Number of atoms       :  407 (   8 equ;   0 cnn)
%            Maximal formula atoms :   14 (   6 avg)
%            Number of connectives : 1318 (  55   ~;  66   |;  66   &; 824   @)
%                                         (   0 <=>; 138  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   19 (  13 avg)
%            Number of types       :    2 (   1 usr)
%            Number of type conns  :  147 ( 147   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   11 (   7 usr;   4 con; 0-2 aty)
%                                         ( 110  !!;  59  ??;   0 @@+;   0 @@-)
%            Number of variables   :  316 ( 209   ^; 103   !;   4   ?; 316   :)

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

thf('#sk1_type',type,
    '#sk1': a ).

thf('#sk497_type',type,
    '#sk497': ( a > $o ) > a ).

thf('#sk12_type',type,
    '#sk12': ( a > $o ) > ( a > $o ) > a ).

thf('#sk564_type',type,
    '#sk564': ( a > $o ) > a ).

thf(cK_type,type,
    cK: ( a > $o ) > a > $o ).

thf('#l_lift6836_type',type,
    '#l_lift6836': a > $o ).

thf('#sk570_type',type,
    '#sk570': ( a > $o ) > a > $o ).

thf(cTHM116_1S,conjecture,
    ( ! [X: a > $o,Y: a > $o] :
        ( ! [Xx: a] :
            ( ( X @ Xx )
           => ( Y @ Xx ) )
       => ! [Xx: a] :
            ( ( cK @ X @ Xx )
           => ( cK @ Y @ Xx ) ) )
   => ! [Xx: a] :
        ( ( cK
          @ ^ [Xx0: a] :
            ? [S: a > $o] :
              ( ! [Xx1: a] :
                  ( ( S @ Xx1 )
                 => ( cK @ S @ Xx1 ) )
              & ( S @ Xx0 ) )
          @ Xx )
       => ? [S: a > $o] :
            ( ! [Xx0: a] :
                ( ( S @ Xx0 )
               => ( cK @ S @ Xx0 ) )
            & ( S @ Xx ) ) ) ) ).

thf(zf_stmt_0,negated_conjecture,
    ~ ( ! [X: a > $o,Y: a > $o] :
          ( ! [Xx: a] :
              ( ( X @ Xx )
             => ( Y @ Xx ) )
         => ! [Xx: a] :
              ( ( cK @ X @ Xx )
             => ( cK @ Y @ Xx ) ) )
     => ! [Xx: a] :
          ( ( cK
            @ ^ [Xx0: a] :
              ? [S: a > $o] :
                ( ! [Xx1: a] :
                    ( ( S @ Xx1 )
                   => ( cK @ S @ Xx1 ) )
                & ( S @ Xx0 ) )
            @ Xx )
         => ? [S: a > $o] :
              ( ! [Xx0: a] :
                  ( ( S @ Xx0 )
                 => ( cK @ S @ Xx0 ) )
              & ( S @ Xx ) ) ) ),
    inference('cnf.neg',[status(esa)],[cTHM116_1S]) ).

thf(zip_derived_cl0,plain,
    ~ ( ( !!
        @ ^ [Y0: a > $o] :
            ( !!
            @ ^ [Y1: a > $o] :
                ( ( !!
                  @ ^ [Y2: a] :
                      ( ( Y0 @ Y2 )
                     => ( Y1 @ Y2 ) ) )
               => ( !!
                  @ ^ [Y2: a] :
                      ( ( cK @ Y0 @ Y2 )
                     => ( cK @ Y1 @ Y2 ) ) ) ) ) )
     => ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) ) ) ) ),
    inference(cnf,[status(esa)],[zf_stmt_0]) ).

thf(zip_derived_cl2,plain,
    ~ ( !!
      @ ^ [Y0: a] :
          ( ( cK
            @ ^ [Y1: a] :
                ( ??
                @ ^ [Y2: a > $o] :
                    ( ( !!
                      @ ^ [Y3: a] :
                          ( ( Y2 @ Y3 )
                         => ( cK @ Y2 @ Y3 ) ) )
                    & ( Y2 @ Y1 ) ) )
            @ Y0 )
         => ( ??
            @ ^ [Y1: a > $o] :
                ( ( !!
                  @ ^ [Y2: a] :
                      ( ( Y1 @ Y2 )
                     => ( cK @ Y1 @ Y2 ) ) )
                & ( Y1 @ Y0 ) ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl0]) ).

thf(zip_derived_cl4,plain,
    ~ ( ( cK
        @ ^ [Y0: a] :
            ( ??
            @ ^ [Y1: a > $o] :
                ( ( !!
                  @ ^ [Y2: a] :
                      ( ( Y1 @ Y2 )
                     => ( cK @ Y1 @ Y2 ) ) )
                & ( Y1 @ Y0 ) ) )
        @ '#sk1' )
     => ( ??
        @ ^ [Y0: a > $o] :
            ( ( !!
              @ ^ [Y1: a] :
                  ( ( Y0 @ Y1 )
                 => ( cK @ Y0 @ Y1 ) ) )
            & ( Y0 @ '#sk1' ) ) ) ),
    inference(lazy_cnf_exists,[status(thm)],[zip_derived_cl2]) ).

thf(zip_derived_cl6,plain,
    ( cK
    @ ^ [Y0: a] :
        ( ??
        @ ^ [Y1: a > $o] :
            ( ( !!
              @ ^ [Y2: a] :
                  ( ( Y1 @ Y2 )
                 => ( cK @ Y1 @ Y2 ) ) )
            & ( Y1 @ Y0 ) ) )
    @ '#sk1' ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl4]) ).

thf(zip_derived_cl6_001,plain,
    ( cK
    @ ^ [Y0: a] :
        ( ??
        @ ^ [Y1: a > $o] :
            ( ( !!
              @ ^ [Y2: a] :
                  ( ( Y1 @ Y2 )
                 => ( cK @ Y1 @ Y2 ) ) )
            & ( Y1 @ Y0 ) ) )
    @ '#sk1' ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl4]) ).

thf(zip_derived_cl3469,plain,
    ! [X1: a] :
      ( ( '#l_lift6836' @ X1 )
      = ( ??
        @ ^ [Y0: a > $o] :
            ( ( !!
              @ ^ [Y1: a] :
                  ( ( Y0 @ Y1 )
                 => ( cK @ Y0 @ Y1 ) ) )
            & ( Y0 @ X1 ) ) ) ),
    define([status(thm)]) ).

thf(zip_derived_cl3470,plain,
    cK @ '#l_lift6836' @ '#sk1',
    inference(lambda_lifting,[status(thm)],[zip_derived_cl6,zip_derived_cl3469]) ).

thf(zip_derived_cl7,plain,
    ~ ( ??
      @ ^ [Y0: a > $o] :
          ( ( !!
            @ ^ [Y1: a] :
                ( ( Y0 @ Y1 )
               => ( cK @ Y0 @ Y1 ) ) )
          & ( Y0 @ '#sk1' ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl4]) ).

thf(zip_derived_cl9,plain,
    ! [X2: a > $o] :
      ~ ( ( !!
          @ ^ [Y0: a] :
              ( ( X2 @ Y0 )
             => ( cK @ X2 @ Y0 ) ) )
        & ( X2 @ '#sk1' ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl7]) ).

thf(zip_derived_cl11,plain,
    ! [X2: a > $o] :
      ( ~ ( !!
          @ ^ [Y0: a] :
              ( ( X2 @ Y0 )
             => ( cK @ X2 @ Y0 ) ) )
      | ~ ( X2 @ '#sk1' ) ),
    inference(lazy_cnf_and,[status(thm)],[zip_derived_cl9]) ).

thf(zip_derived_cl14,plain,
    ! [X2: a > $o] :
      ( ~ ( ( X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) )
         => ( cK @ X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) ) )
      | ~ ( X2 @ '#sk1' ) ),
    inference(lazy_cnf_exists,[status(thm)],[zip_derived_cl11]) ).

thf(zip_derived_cl18,plain,
    ! [X2: a > $o] :
      ( ~ ( cK @ X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) )
      | ~ ( X2 @ '#sk1' ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl14]) ).

thf(zip_derived_cl1,plain,
    ( !!
    @ ^ [Y0: a > $o] :
        ( !!
        @ ^ [Y1: a > $o] :
            ( ( !!
              @ ^ [Y2: a] :
                  ( ( Y0 @ Y2 )
                 => ( Y1 @ Y2 ) ) )
           => ( !!
              @ ^ [Y2: a] :
                  ( ( cK @ Y0 @ Y2 )
                 => ( cK @ Y1 @ Y2 ) ) ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl0]) ).

thf(zip_derived_cl3,plain,
    ! [X2: a > $o] :
      ( !!
      @ ^ [Y0: a > $o] :
          ( ( !!
            @ ^ [Y1: a] :
                ( ( X2 @ Y1 )
               => ( Y0 @ Y1 ) ) )
         => ( !!
            @ ^ [Y1: a] :
                ( ( cK @ X2 @ Y1 )
               => ( cK @ Y0 @ Y1 ) ) ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl1]) ).

thf(zip_derived_cl23,plain,
    ( !!
    @ ^ [Y0: a > $o] :
        ( ( !!
          @ ^ [Y1: a] :
              ( ( ??
                @ ^ [Y2: a > $o] :
                    ( ( !!
                      @ ^ [Y3: a] :
                          ( ( Y2 @ Y3 )
                         => ( cK @ Y2 @ Y3 ) ) )
                    & ( Y2 @ Y1 ) ) )
             => ( Y0 @ Y1 ) ) )
       => ( !!
          @ ^ [Y1: a] :
              ( ( cK
                @ ^ [Y2: a] :
                    ( ??
                    @ ^ [Y3: a > $o] :
                        ( ( !!
                          @ ^ [Y4: a] :
                              ( ( Y3 @ Y4 )
                             => ( cK @ Y3 @ Y4 ) ) )
                        & ( Y3 @ Y2 ) ) )
                @ Y1 )
             => ( cK @ Y0 @ Y1 ) ) ) ) ),
    inference(triggered_bool_instantiation,[status(thm)],[zip_derived_cl3]) ).

thf(zip_derived_cl205,plain,
    ! [X2: a > $o] :
      ( ( !!
        @ ^ [Y0: a] :
            ( ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) )
           => ( X2 @ Y0 ) ) )
     => ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( cK @ X2 @ Y0 ) ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl23]) ).

thf(zip_derived_cl208,plain,
    ! [X2: a > $o] :
      ( ~ ( !!
          @ ^ [Y0: a] :
              ( ( ??
                @ ^ [Y1: a > $o] :
                    ( ( !!
                      @ ^ [Y2: a] :
                          ( ( Y1 @ Y2 )
                         => ( cK @ Y1 @ Y2 ) ) )
                    & ( Y1 @ Y0 ) ) )
             => ( X2 @ Y0 ) ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( cK @ X2 @ Y0 ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl205]) ).

thf(zip_derived_cl209,plain,
    ! [X2: a > $o] :
      ( ~ ( ( ??
            @ ^ [Y0: a > $o] :
                ( ( !!
                  @ ^ [Y1: a] :
                      ( ( Y0 @ Y1 )
                     => ( cK @ Y0 @ Y1 ) ) )
                & ( Y0 @ ( '#sk564' @ X2 ) ) ) )
         => ( X2 @ ( '#sk564' @ X2 ) ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( cK @ X2 @ Y0 ) ) ) ),
    inference(lazy_cnf_exists,[status(thm)],[zip_derived_cl208]) ).

thf(zip_derived_cl210,plain,
    ! [X2: a > $o] :
      ( ( ??
        @ ^ [Y0: a > $o] :
            ( ( !!
              @ ^ [Y1: a] :
                  ( ( Y0 @ Y1 )
                 => ( cK @ Y0 @ Y1 ) ) )
            & ( Y0 @ ( '#sk564' @ X2 ) ) ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( cK @ X2 @ Y0 ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl209]) ).

thf(zip_derived_cl212,plain,
    ! [X2: a > $o] :
      ( ( ( !!
          @ ^ [Y0: a] :
              ( ( '#sk570' @ X2 @ Y0 )
             => ( cK @ ( '#sk570' @ X2 ) @ Y0 ) ) )
        & ( '#sk570' @ X2 @ ( '#sk564' @ X2 ) ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( cK @ X2 @ Y0 ) ) ) ),
    inference(lazy_cnf_exists,[status(thm)],[zip_derived_cl210]) ).

thf(zip_derived_cl215,plain,
    ! [X2: a > $o] :
      ( ( '#sk570' @ X2 @ ( '#sk564' @ X2 ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( cK @ X2 @ Y0 ) ) ) ),
    inference(lazy_cnf_and,[status(thm)],[zip_derived_cl212]) ).

thf(zip_derived_cl218,plain,
    ! [X2: a > $o,X4: a] :
      ( ( ( cK
          @ ^ [Y0: a] :
              ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) )
          @ X4 )
       => ( cK @ X2 @ X4 ) )
      | ( '#sk570' @ X2 @ ( '#sk564' @ X2 ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl215]) ).

thf(zip_derived_cl220,plain,
    ! [X2: a > $o,X4: a] :
      ( ~ ( cK
          @ ^ [Y0: a] :
              ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) )
          @ X4 )
      | ( cK @ X2 @ X4 )
      | ( '#sk570' @ X2 @ ( '#sk564' @ X2 ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl218]) ).

thf(zip_derived_cl3469_002,plain,
    ! [X1: a] :
      ( ( '#l_lift6836' @ X1 )
      = ( ??
        @ ^ [Y0: a > $o] :
            ( ( !!
              @ ^ [Y1: a] :
                  ( ( Y0 @ Y1 )
                 => ( cK @ Y0 @ Y1 ) ) )
            & ( Y0 @ X1 ) ) ) ),
    define([status(thm)]) ).

thf(zip_derived_cl3475,plain,
    ! [X2: a > $o,X4: a] :
      ( ~ ( cK @ '#l_lift6836' @ X4 )
      | ( cK @ X2 @ X4 )
      | ( '#sk570' @ X2 @ ( '#sk564' @ X2 ) ) ),
    inference(lambda_lifting,[status(thm)],[zip_derived_cl220,zip_derived_cl3469]) ).

thf(zip_derived_cl214,plain,
    ! [X2: a > $o] :
      ( ( !!
        @ ^ [Y0: a] :
            ( ( '#sk570' @ X2 @ Y0 )
           => ( cK @ ( '#sk570' @ X2 ) @ Y0 ) ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( cK @ X2 @ Y0 ) ) ) ),
    inference(lazy_cnf_and,[status(thm)],[zip_derived_cl212]) ).

thf(zip_derived_cl217,plain,
    ! [X2: a > $o,X4: a] :
      ( ( ( '#sk570' @ X2 @ X4 )
       => ( cK @ ( '#sk570' @ X2 ) @ X4 ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( cK @ X2 @ Y0 ) ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl214]) ).

thf(zip_derived_cl219,plain,
    ! [X2: a > $o,X4: a] :
      ( ~ ( '#sk570' @ X2 @ X4 )
      | ( cK @ ( '#sk570' @ X2 ) @ X4 )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( cK @ X2 @ Y0 ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl217]) ).

thf(zip_derived_cl221,plain,
    ! [X2: a > $o,X4: a,X6: a] :
      ( ( ( cK
          @ ^ [Y0: a] :
              ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) )
          @ X6 )
       => ( cK @ X2 @ X6 ) )
      | ( cK @ ( '#sk570' @ X2 ) @ X4 )
      | ~ ( '#sk570' @ X2 @ X4 ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl219]) ).

thf(zip_derived_cl222,plain,
    ! [X2: a > $o,X4: a,X6: a] :
      ( ~ ( cK
          @ ^ [Y0: a] :
              ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) )
          @ X6 )
      | ( cK @ X2 @ X6 )
      | ~ ( '#sk570' @ X2 @ X4 )
      | ( cK @ ( '#sk570' @ X2 ) @ X4 ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl221]) ).

thf(zip_derived_cl3469_003,plain,
    ! [X1: a] :
      ( ( '#l_lift6836' @ X1 )
      = ( ??
        @ ^ [Y0: a > $o] :
            ( ( !!
              @ ^ [Y1: a] :
                  ( ( Y0 @ Y1 )
                 => ( cK @ Y0 @ Y1 ) ) )
            & ( Y0 @ X1 ) ) ) ),
    define([status(thm)]) ).

thf(zip_derived_cl3476,plain,
    ! [X2: a > $o,X4: a,X6: a] :
      ( ~ ( cK @ '#l_lift6836' @ X6 )
      | ( cK @ X2 @ X6 )
      | ~ ( '#sk570' @ X2 @ X4 )
      | ( cK @ ( '#sk570' @ X2 ) @ X4 ) ),
    inference(lambda_lifting,[status(thm)],[zip_derived_cl222,zip_derived_cl3469]) ).

thf(zip_derived_cl17,plain,
    ! [X2: a > $o] :
      ( ( X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) )
      | ~ ( X2 @ '#sk1' ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl14]) ).

thf(zip_derived_cl211,plain,
    ! [X2: a > $o] :
      ( ~ ( X2 @ ( '#sk564' @ X2 ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 )
           => ( cK @ X2 @ Y0 ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl209]) ).

thf(zip_derived_cl213,plain,
    ! [X2: a > $o,X4: a] :
      ( ( ( cK
          @ ^ [Y0: a] :
              ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) )
          @ X4 )
       => ( cK @ X2 @ X4 ) )
      | ~ ( X2 @ ( '#sk564' @ X2 ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl211]) ).

thf(zip_derived_cl216,plain,
    ! [X2: a > $o,X4: a] :
      ( ~ ( cK
          @ ^ [Y0: a] :
              ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) )
          @ X4 )
      | ( cK @ X2 @ X4 )
      | ~ ( X2 @ ( '#sk564' @ X2 ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl213]) ).

thf(zip_derived_cl3469_004,plain,
    ! [X1: a] :
      ( ( '#l_lift6836' @ X1 )
      = ( ??
        @ ^ [Y0: a > $o] :
            ( ( !!
              @ ^ [Y1: a] :
                  ( ( Y0 @ Y1 )
                 => ( cK @ Y0 @ Y1 ) ) )
            & ( Y0 @ X1 ) ) ) ),
    define([status(thm)]) ).

thf(zip_derived_cl3474,plain,
    ! [X2: a > $o,X4: a] :
      ( ~ ( cK @ '#l_lift6836' @ X4 )
      | ( cK @ X2 @ X4 )
      | ~ ( X2 @ ( '#sk564' @ X2 ) ) ),
    inference(lambda_lifting,[status(thm)],[zip_derived_cl216,zip_derived_cl3469]) ).

thf(zip_derived_cl3469_005,plain,
    ! [X1: a] :
      ( ( '#l_lift6836' @ X1 )
      = ( ??
        @ ^ [Y0: a > $o] :
            ( ( !!
              @ ^ [Y1: a] :
                  ( ( Y0 @ Y1 )
                 => ( cK @ Y0 @ Y1 ) ) )
            & ( Y0 @ X1 ) ) ) ),
    define([status(thm)]) ).

thf(zip_derived_cl3_006,plain,
    ! [X2: a > $o] :
      ( !!
      @ ^ [Y0: a > $o] :
          ( ( !!
            @ ^ [Y1: a] :
                ( ( X2 @ Y1 )
               => ( Y0 @ Y1 ) ) )
         => ( !!
            @ ^ [Y1: a] :
                ( ( cK @ X2 @ Y1 )
               => ( cK @ Y0 @ Y1 ) ) ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl1]) ).

thf(zip_derived_cl5,plain,
    ! [X2: a > $o,X4: a > $o] :
      ( ( !!
        @ ^ [Y0: a] :
            ( ( X2 @ Y0 )
           => ( X4 @ Y0 ) ) )
     => ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X2 @ Y0 )
           => ( cK @ X4 @ Y0 ) ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl3]) ).

thf(zip_derived_cl22,plain,
    ! [X0: a > $o] :
      ( ( !!
        @ ^ [Y0: a] :
            ( ( X0 @ Y0 )
           => ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) ) ) )
     => ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X0 @ Y0 )
           => ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 ) ) ) ),
    inference(triggered_bool_instantiation,[status(thm)],[zip_derived_cl5]) ).

thf(zip_derived_cl188,plain,
    ! [X0: a > $o] :
      ( ~ ( !!
          @ ^ [Y0: a] :
              ( ( X0 @ Y0 )
             => ( ??
                @ ^ [Y1: a > $o] :
                    ( ( !!
                      @ ^ [Y2: a] :
                          ( ( Y1 @ Y2 )
                         => ( cK @ Y1 @ Y2 ) ) )
                    & ( Y1 @ Y0 ) ) ) ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X0 @ Y0 )
           => ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl22]) ).

thf(zip_derived_cl189,plain,
    ! [X0: a > $o] :
      ( ~ ( ( X0 @ ( '#sk497' @ X0 ) )
         => ( ??
            @ ^ [Y0: a > $o] :
                ( ( !!
                  @ ^ [Y1: a] :
                      ( ( Y0 @ Y1 )
                     => ( cK @ Y0 @ Y1 ) ) )
                & ( Y0 @ ( '#sk497' @ X0 ) ) ) ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X0 @ Y0 )
           => ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 ) ) ) ),
    inference(lazy_cnf_exists,[status(thm)],[zip_derived_cl188]) ).

thf(zip_derived_cl191,plain,
    ! [X0: a > $o] :
      ( ~ ( ??
          @ ^ [Y0: a > $o] :
              ( ( !!
                @ ^ [Y1: a] :
                    ( ( Y0 @ Y1 )
                   => ( cK @ Y0 @ Y1 ) ) )
              & ( Y0 @ ( '#sk497' @ X0 ) ) ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X0 @ Y0 )
           => ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl189]) ).

thf(zip_derived_cl193,plain,
    ! [X0: a > $o,X2: a > $o] :
      ( ~ ( ( !!
            @ ^ [Y0: a] :
                ( ( X2 @ Y0 )
               => ( cK @ X2 @ Y0 ) ) )
          & ( X2 @ ( '#sk497' @ X0 ) ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X0 @ Y0 )
           => ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 ) ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl191]) ).

thf(zip_derived_cl197,plain,
    ! [X0: a > $o,X2: a > $o] :
      ( ~ ( !!
          @ ^ [Y0: a] :
              ( ( X2 @ Y0 )
             => ( cK @ X2 @ Y0 ) ) )
      | ~ ( X2 @ ( '#sk497' @ X0 ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X0 @ Y0 )
           => ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 ) ) ) ),
    inference(lazy_cnf_and,[status(thm)],[zip_derived_cl193]) ).

thf(zip_derived_cl198,plain,
    ! [X0: a > $o,X2: a > $o] :
      ( ~ ( ( X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) )
         => ( cK @ X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X0 @ Y0 )
           => ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 ) ) )
      | ~ ( X2 @ ( '#sk497' @ X0 ) ) ),
    inference(lazy_cnf_exists,[status(thm)],[zip_derived_cl197]) ).

thf(zip_derived_cl199,plain,
    ! [X0: a > $o,X2: a > $o] :
      ( ( X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) )
      | ~ ( X2 @ ( '#sk497' @ X0 ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X0 @ Y0 )
           => ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl198]) ).

thf(zip_derived_cl201,plain,
    ! [X0: a > $o,X2: a > $o,X4: a] :
      ( ( ( cK @ X0 @ X4 )
       => ( cK
          @ ^ [Y0: a] :
              ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) )
          @ X4 ) )
      | ~ ( X2 @ ( '#sk497' @ X0 ) )
      | ( X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl199]) ).

thf(zip_derived_cl203,plain,
    ! [X0: a > $o,X2: a > $o,X4: a] :
      ( ~ ( cK @ X0 @ X4 )
      | ( cK
        @ ^ [Y0: a] :
            ( ??
            @ ^ [Y1: a > $o] :
                ( ( !!
                  @ ^ [Y2: a] :
                      ( ( Y1 @ Y2 )
                     => ( cK @ Y1 @ Y2 ) ) )
                & ( Y1 @ Y0 ) ) )
        @ X4 )
      | ( X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) )
      | ~ ( X2 @ ( '#sk497' @ X0 ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl201]) ).

thf(zip_derived_cl3469_007,plain,
    ! [X1: a] :
      ( ( '#l_lift6836' @ X1 )
      = ( ??
        @ ^ [Y0: a > $o] :
            ( ( !!
              @ ^ [Y1: a] :
                  ( ( Y0 @ Y1 )
                 => ( cK @ Y0 @ Y1 ) ) )
            & ( Y0 @ X1 ) ) ) ),
    define([status(thm)]) ).

thf(zip_derived_cl3472,plain,
    ! [X0: a > $o,X2: a > $o,X4: a] :
      ( ~ ( cK @ X0 @ X4 )
      | ( cK @ '#l_lift6836' @ X4 )
      | ( X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) )
      | ~ ( X2 @ ( '#sk497' @ X0 ) ) ),
    inference(lambda_lifting,[status(thm)],[zip_derived_cl203,zip_derived_cl3469]) ).

thf(zip_derived_cl200,plain,
    ! [X0: a > $o,X2: a > $o] :
      ( ~ ( cK @ X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) )
      | ~ ( X2 @ ( '#sk497' @ X0 ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X0 @ Y0 )
           => ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl198]) ).

thf(zip_derived_cl202,plain,
    ! [X0: a > $o,X2: a > $o,X4: a] :
      ( ( ( cK @ X0 @ X4 )
       => ( cK
          @ ^ [Y0: a] :
              ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) )
          @ X4 ) )
      | ~ ( X2 @ ( '#sk497' @ X0 ) )
      | ~ ( cK @ X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl200]) ).

thf(zip_derived_cl204,plain,
    ! [X0: a > $o,X2: a > $o,X4: a] :
      ( ~ ( cK @ X0 @ X4 )
      | ( cK
        @ ^ [Y0: a] :
            ( ??
            @ ^ [Y1: a > $o] :
                ( ( !!
                  @ ^ [Y2: a] :
                      ( ( Y1 @ Y2 )
                     => ( cK @ Y1 @ Y2 ) ) )
                & ( Y1 @ Y0 ) ) )
        @ X4 )
      | ~ ( cK @ X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) )
      | ~ ( X2 @ ( '#sk497' @ X0 ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl202]) ).

thf(zip_derived_cl3469_008,plain,
    ! [X1: a] :
      ( ( '#l_lift6836' @ X1 )
      = ( ??
        @ ^ [Y0: a > $o] :
            ( ( !!
              @ ^ [Y1: a] :
                  ( ( Y0 @ Y1 )
                 => ( cK @ Y0 @ Y1 ) ) )
            & ( Y0 @ X1 ) ) ) ),
    define([status(thm)]) ).

thf(zip_derived_cl3473,plain,
    ! [X0: a > $o,X2: a > $o,X4: a] :
      ( ~ ( cK @ X0 @ X4 )
      | ( cK @ '#l_lift6836' @ X4 )
      | ~ ( cK @ X2 @ ( '#sk12' @ X2 @ ( cK @ X2 ) ) )
      | ~ ( X2 @ ( '#sk497' @ X0 ) ) ),
    inference(lambda_lifting,[status(thm)],[zip_derived_cl204,zip_derived_cl3469]) ).

thf(zip_derived_cl190,plain,
    ! [X0: a > $o] :
      ( ( X0 @ ( '#sk497' @ X0 ) )
      | ( !!
        @ ^ [Y0: a] :
            ( ( cK @ X0 @ Y0 )
           => ( cK
              @ ^ [Y1: a] :
                  ( ??
                  @ ^ [Y2: a > $o] :
                      ( ( !!
                        @ ^ [Y3: a] :
                            ( ( Y2 @ Y3 )
                           => ( cK @ Y2 @ Y3 ) ) )
                      & ( Y2 @ Y1 ) ) )
              @ Y0 ) ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl189]) ).

thf(zip_derived_cl192,plain,
    ! [X0: a > $o,X2: a] :
      ( ( ( cK @ X0 @ X2 )
       => ( cK
          @ ^ [Y0: a] :
              ( ??
              @ ^ [Y1: a > $o] :
                  ( ( !!
                    @ ^ [Y2: a] :
                        ( ( Y1 @ Y2 )
                       => ( cK @ Y1 @ Y2 ) ) )
                  & ( Y1 @ Y0 ) ) )
          @ X2 ) )
      | ( X0 @ ( '#sk497' @ X0 ) ) ),
    inference(lazy_cnf_forall,[status(thm)],[zip_derived_cl190]) ).

thf(zip_derived_cl196,plain,
    ! [X0: a > $o,X2: a] :
      ( ~ ( cK @ X0 @ X2 )
      | ( cK
        @ ^ [Y0: a] :
            ( ??
            @ ^ [Y1: a > $o] :
                ( ( !!
                  @ ^ [Y2: a] :
                      ( ( Y1 @ Y2 )
                     => ( cK @ Y1 @ Y2 ) ) )
                & ( Y1 @ Y0 ) ) )
        @ X2 )
      | ( X0 @ ( '#sk497' @ X0 ) ) ),
    inference(lazy_cnf_imply,[status(thm)],[zip_derived_cl192]) ).

thf(zip_derived_cl3469_009,plain,
    ! [X1: a] :
      ( ( '#l_lift6836' @ X1 )
      = ( ??
        @ ^ [Y0: a > $o] :
            ( ( !!
              @ ^ [Y1: a] :
                  ( ( Y0 @ Y1 )
                 => ( cK @ Y0 @ Y1 ) ) )
            & ( Y0 @ X1 ) ) ) ),
    define([status(thm)]) ).

thf(zip_derived_cl3471,plain,
    ! [X0: a > $o,X2: a] :
      ( ~ ( cK @ X0 @ X2 )
      | ( cK @ '#l_lift6836' @ X2 )
      | ( X0 @ ( '#sk497' @ X0 ) ) ),
    inference(lambda_lifting,[status(thm)],[zip_derived_cl196,zip_derived_cl3469]) ).

thf(zip_derived_cl3503,plain,
    $false,
    inference(eprover,[status(thm)],[zip_derived_cl3470,zip_derived_cl18,zip_derived_cl3475,zip_derived_cl3476,zip_derived_cl17,zip_derived_cl3474,zip_derived_cl3469,zip_derived_cl3472,zip_derived_cl3473,zip_derived_cl3471]) ).


%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12  % Problem  : SEV246^6 : TPTP v8.1.2. Released v5.1.0.
% 0.00/0.12  % Command  : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.qpGi6Esysw true
% 0.12/0.32  % Computer : n005.cluster.edu
% 0.12/0.32  % Model    : x86_64 x86_64
% 0.12/0.32  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.32  % Memory   : 8042.1875MB
% 0.12/0.32  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.32  % CPULimit : 300
% 0.12/0.32  % WCLimit  : 300
% 0.12/0.32  % DateTime : Thu Aug 24 03:06:54 EDT 2023
% 0.12/0.32  % CPUTime  : 
% 0.12/0.32  % Running portfolio for 300 s
% 0.12/0.32  % File         : /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.12/0.33  % Number of cores: 8
% 0.12/0.33  % Python version: Python 3.6.8
% 0.12/0.33  % Running in HO mode
% 0.17/0.53  % Total configuration time : 828
% 0.17/0.53  % Estimated wc time : 1656
% 0.17/0.53  % Estimated cpu time (8 cpus) : 207.0
% 0.17/0.57  % /export/starexec/sandbox/solver/bin/lams/40_c.s.sh running for 80s
% 0.17/0.57  % /export/starexec/sandbox/solver/bin/lams/40_c_ic.sh running for 80s
% 0.17/0.57  % /export/starexec/sandbox/solver/bin/lams/35_full_unif4.sh running for 80s
% 0.17/0.58  % /export/starexec/sandbox/solver/bin/lams/15_e_short1.sh running for 30s
% 0.17/0.61  % /export/starexec/sandbox/solver/bin/lams/40_noforms.sh running for 90s
% 0.17/0.62  % /export/starexec/sandbox/solver/bin/lams/40_b.comb.sh running for 70s
% 0.17/0.62  % /export/starexec/sandbox/solver/bin/lams/20_acsne_simpl.sh running for 40s
% 0.17/0.64  % /export/starexec/sandbox/solver/bin/lams/30_sp5.sh running for 60s
% 50.42/7.22  % Solved by lams/20_acsne_simpl.sh.
% 50.42/7.22  % done 270 iterations in 6.503s
% 50.42/7.22  % SZS status Theorem for '/export/starexec/sandbox/benchmark/theBenchmark.p'
% 50.42/7.22  % SZS output start Refutation
% See solution above
% 50.42/7.23  
% 50.42/7.23  
% 50.42/7.23  % Terminating...
% 51.67/7.44  % Runner terminated.
% 51.67/7.46  % Zipperpin 1.5 exiting
%------------------------------------------------------------------------------