TSTP Solution File: CSR060+2 by Zipperpin---2.1.9999

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Zipperpin---2.1.9999
% Problem  : CSR060+2 : TPTP v8.1.2. Released v3.4.0.
% Transfm  : NO INFORMATION
% Format   : NO INFORMATION
% Command  : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.PmuIgPkZ0v true

% Computer : n026.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 Aug 30 22:06:05 EDT 2023

% Result   : Theorem 7.33s 1.69s
% Output   : Refutation 7.33s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   10
%            Number of leaves      :   36
% Syntax   : Number of formulae    :   73 (  23 unt;  24 typ;   0 def)
%            Number of atoms       :   89 (   0 equ;   0 cnn)
%            Maximal formula atoms :    3 (   1 avg)
%            Number of connectives :  319 (  34   ~;  28   |;   5   &; 245   @)
%                                         (   0 <=>;   7  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   13 (   6 avg)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   22 (  22   >;   0   *;   0   +;   0  <<)
%            Number of symbols     :   25 (  24 usr;  14 con; 0-4 aty)
%            Number of variables   :   30 (   0   ^;  28   !;   2   ?;  30   :)

% Comments : 
%------------------------------------------------------------------------------
thf(f_subcollectionofwithrelationtofn_type,type,
    f_subcollectionofwithrelationtofn: $i > $i > $i > $i ).

thf(c_machinelearningspindleheadmt_type,type,
    c_machinelearningspindleheadmt: $i ).

thf(c_tptp_9_51_type,type,
    c_tptp_9_51: $i ).

thf(tptpcol_16_27189_type,type,
    tptpcol_16_27189: $i > $o ).

thf(c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802_type,type,
    c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802: $i ).

thf(tptp_9_51_type,type,
    tptp_9_51: $i > $i > $o ).

thf(s_http_wwwsurgerydoorcoukmedconsprintasprecno23068988_type,type,
    s_http_wwwsurgerydoorcoukmedconsprintasprecno23068988: $i ).

thf(c_objectfoundinlocation_type,type,
    c_objectfoundinlocation: $i ).

thf(isa_type,type,
    isa: $i > $i > $o ).

thf(f_urlreferentfn_type,type,
    f_urlreferentfn: $i > $i ).

thf(f_contentmtofcdafromeventfn_type,type,
    f_contentmtofcdafromeventfn: $i > $i > $i ).

thf(c_cityofbostonma_type,type,
    c_cityofbostonma: $i ).

thf(mtvisible_type,type,
    mtvisible: $i > $o ).

thf(c_ldscdemonstrationspindleheadmt_type,type,
    c_ldscdemonstrationspindleheadmt: $i ).

thf(genlmt_type,type,
    genlmt: $i > $i > $o ).

thf(c_currentworlddatacollectormt_nonhomocentric_type,type,
    c_currentworlddatacollectormt_nonhomocentric: $i ).

thf(relationexistsall_type,type,
    relationexistsall: $i > $i > $i > $o ).

thf(c_ship_type,type,
    c_ship: $i ).

thf(f_urlfn_type,type,
    f_urlfn: $i > $i ).

thf(c_tptpcol_16_27189_type,type,
    c_tptpcol_16_27189: $i ).

thf(c_translation_0_885_type,type,
    c_translation_0_885: $i ).

thf(c_ldscgeneralcollectormt_type,type,
    c_ldscgeneralcollectormt: $i ).

thf(f_relationexistsallfn_type,type,
    f_relationexistsallfn: $i > $i > $i > $i > $i ).

thf(c_miptdatabase19681997_termsmt_type,type,
    c_miptdatabase19681997_termsmt: $i ).

thf(ax1_309,axiom,
    ( ( mtvisible @ c_currentworlddatacollectormt_nonhomocentric )
   => ( relationexistsall @ c_tptp_9_51 @ c_tptpcol_16_27189 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ) ) ).

thf(zip_derived_cl308,plain,
    ( ( relationexistsall @ c_tptp_9_51 @ c_tptpcol_16_27189 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) )
    | ~ ( mtvisible @ c_currentworlddatacollectormt_nonhomocentric ) ),
    inference(cnf,[status(esa)],[ax1_309]) ).

thf(ax1_64,axiom,
    ! [TERM: $i,INDEPCOL: $i,PRED: $i,DEPCOL: $i] :
      ( ( ( isa @ TERM @ INDEPCOL )
        & ( relationexistsall @ PRED @ DEPCOL @ INDEPCOL ) )
     => ( isa @ ( f_relationexistsallfn @ TERM @ PRED @ DEPCOL @ INDEPCOL ) @ DEPCOL ) ) ).

thf(zip_derived_cl63,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( ~ ( isa @ X0 @ X1 )
      | ~ ( relationexistsall @ X2 @ X3 @ X1 )
      | ( isa @ ( f_relationexistsallfn @ X0 @ X2 @ X3 @ X1 ) @ X3 ) ),
    inference(cnf,[status(esa)],[ax1_64]) ).

thf(zip_derived_cl1900,plain,
    ! [X0: $i] :
      ( ~ ( mtvisible @ c_currentworlddatacollectormt_nonhomocentric )
      | ( isa @ ( f_relationexistsallfn @ X0 @ c_tptp_9_51 @ c_tptpcol_16_27189 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ) @ c_tptpcol_16_27189 )
      | ~ ( isa @ X0 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ) ),
    inference('dp-resolution',[status(thm)],[zip_derived_cl308,zip_derived_cl63]) ).

thf(ax1_59,axiom,
    genlmt @ c_ldscdemonstrationspindleheadmt @ c_currentworlddatacollectormt_nonhomocentric ).

thf(zip_derived_cl58,plain,
    genlmt @ c_ldscdemonstrationspindleheadmt @ c_currentworlddatacollectormt_nonhomocentric,
    inference(cnf,[status(esa)],[ax1_59]) ).

thf(ax1_1123,axiom,
    ! [SPECMT: $i,GENLMT: $i] :
      ( ( ( mtvisible @ SPECMT )
        & ( genlmt @ SPECMT @ GENLMT ) )
     => ( mtvisible @ GENLMT ) ) ).

thf(zip_derived_cl1122,plain,
    ! [X0: $i,X1: $i] :
      ( ~ ( mtvisible @ X0 )
      | ~ ( genlmt @ X0 @ X1 )
      | ( mtvisible @ X1 ) ),
    inference(cnf,[status(esa)],[ax1_1123]) ).

thf(zip_derived_cl5840,plain,
    ( ~ ( mtvisible @ c_ldscdemonstrationspindleheadmt )
    | ( mtvisible @ c_currentworlddatacollectormt_nonhomocentric ) ),
    inference('s_sup-',[status(thm)],[zip_derived_cl58,zip_derived_cl1122]) ).

thf(ax1_87,axiom,
    genlmt @ c_ldscgeneralcollectormt @ c_ldscdemonstrationspindleheadmt ).

thf(zip_derived_cl86,plain,
    genlmt @ c_ldscgeneralcollectormt @ c_ldscdemonstrationspindleheadmt,
    inference(cnf,[status(esa)],[ax1_87]) ).

thf(zip_derived_cl1122_001,plain,
    ! [X0: $i,X1: $i] :
      ( ~ ( mtvisible @ X0 )
      | ~ ( genlmt @ X0 @ X1 )
      | ( mtvisible @ X1 ) ),
    inference(cnf,[status(esa)],[ax1_1123]) ).

thf(zip_derived_cl5835,plain,
    ( ~ ( mtvisible @ c_ldscgeneralcollectormt )
    | ( mtvisible @ c_ldscdemonstrationspindleheadmt ) ),
    inference('s_sup-',[status(thm)],[zip_derived_cl86,zip_derived_cl1122]) ).

thf(ax1_52,axiom,
    genlmt @ c_miptdatabase19681997_termsmt @ c_ldscgeneralcollectormt ).

thf(zip_derived_cl51,plain,
    genlmt @ c_miptdatabase19681997_termsmt @ c_ldscgeneralcollectormt,
    inference(cnf,[status(esa)],[ax1_52]) ).

thf(zip_derived_cl1122_002,plain,
    ! [X0: $i,X1: $i] :
      ( ~ ( mtvisible @ X0 )
      | ~ ( genlmt @ X0 @ X1 )
      | ( mtvisible @ X1 ) ),
    inference(cnf,[status(esa)],[ax1_1123]) ).

thf(zip_derived_cl5834,plain,
    ( ~ ( mtvisible @ c_miptdatabase19681997_termsmt )
    | ( mtvisible @ c_ldscgeneralcollectormt ) ),
    inference('s_sup-',[status(thm)],[zip_derived_cl51,zip_derived_cl1122]) ).

thf(ax1_58,axiom,
    genlmt @ c_machinelearningspindleheadmt @ c_miptdatabase19681997_termsmt ).

thf(zip_derived_cl57,plain,
    genlmt @ c_machinelearningspindleheadmt @ c_miptdatabase19681997_termsmt,
    inference(cnf,[status(esa)],[ax1_58]) ).

thf(zip_derived_cl1122_003,plain,
    ! [X0: $i,X1: $i] :
      ( ~ ( mtvisible @ X0 )
      | ~ ( genlmt @ X0 @ X1 )
      | ( mtvisible @ X1 ) ),
    inference(cnf,[status(esa)],[ax1_1123]) ).

thf(zip_derived_cl5838,plain,
    ( ~ ( mtvisible @ c_machinelearningspindleheadmt )
    | ( mtvisible @ c_miptdatabase19681997_termsmt ) ),
    inference('s_sup-',[status(thm)],[zip_derived_cl57,zip_derived_cl1122]) ).

thf(ax1_247,axiom,
    genlmt @ ( f_contentmtofcdafromeventfn @ ( f_urlreferentfn @ ( f_urlfn @ s_http_wwwsurgerydoorcoukmedconsprintasprecno23068988 ) ) @ c_translation_0_885 ) @ c_machinelearningspindleheadmt ).

thf(zip_derived_cl246,plain,
    genlmt @ ( f_contentmtofcdafromeventfn @ ( f_urlreferentfn @ ( f_urlfn @ s_http_wwwsurgerydoorcoukmedconsprintasprecno23068988 ) ) @ c_translation_0_885 ) @ c_machinelearningspindleheadmt,
    inference(cnf,[status(esa)],[ax1_247]) ).

thf(zip_derived_cl1122_004,plain,
    ! [X0: $i,X1: $i] :
      ( ~ ( mtvisible @ X0 )
      | ~ ( genlmt @ X0 @ X1 )
      | ( mtvisible @ X1 ) ),
    inference(cnf,[status(esa)],[ax1_1123]) ).

thf(zip_derived_cl5813,plain,
    ( ~ ( mtvisible @ ( f_contentmtofcdafromeventfn @ ( f_urlreferentfn @ ( f_urlfn @ s_http_wwwsurgerydoorcoukmedconsprintasprecno23068988 ) ) @ c_translation_0_885 ) )
    | ( mtvisible @ c_machinelearningspindleheadmt ) ),
    inference('s_sup-',[status(thm)],[zip_derived_cl246,zip_derived_cl1122]) ).

thf(query110,conjecture,
    ? [X: $i] :
      ( ( mtvisible @ ( f_contentmtofcdafromeventfn @ ( f_urlreferentfn @ ( f_urlfn @ s_http_wwwsurgerydoorcoukmedconsprintasprecno23068988 ) ) @ c_translation_0_885 ) )
     => ( ( tptp_9_51 @ X @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 )
        & ( tptpcol_16_27189 @ X ) ) ) ).

thf(zf_stmt_0,negated_conjecture,
    ~ ? [X: $i] :
        ( ( mtvisible @ ( f_contentmtofcdafromeventfn @ ( f_urlreferentfn @ ( f_urlfn @ s_http_wwwsurgerydoorcoukmedconsprintasprecno23068988 ) ) @ c_translation_0_885 ) )
       => ( ( tptp_9_51 @ X @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 )
          & ( tptpcol_16_27189 @ X ) ) ),
    inference('cnf.neg',[status(esa)],[query110]) ).

thf(zip_derived_cl1132,plain,
    mtvisible @ ( f_contentmtofcdafromeventfn @ ( f_urlreferentfn @ ( f_urlfn @ s_http_wwwsurgerydoorcoukmedconsprintasprecno23068988 ) ) @ c_translation_0_885 ),
    inference(cnf,[status(esa)],[zf_stmt_0]) ).

thf(zip_derived_cl5884,plain,
    mtvisible @ c_machinelearningspindleheadmt,
    inference(demod,[status(thm)],[zip_derived_cl5813,zip_derived_cl1132]) ).

thf(zip_derived_cl5996,plain,
    mtvisible @ c_miptdatabase19681997_termsmt,
    inference(demod,[status(thm)],[zip_derived_cl5838,zip_derived_cl5884]) ).

thf(zip_derived_cl5997,plain,
    mtvisible @ c_ldscgeneralcollectormt,
    inference(demod,[status(thm)],[zip_derived_cl5834,zip_derived_cl5996]) ).

thf(zip_derived_cl5998,plain,
    mtvisible @ c_ldscdemonstrationspindleheadmt,
    inference(demod,[status(thm)],[zip_derived_cl5835,zip_derived_cl5997]) ).

thf(zip_derived_cl6002,plain,
    mtvisible @ c_currentworlddatacollectormt_nonhomocentric,
    inference(demod,[status(thm)],[zip_derived_cl5840,zip_derived_cl5998]) ).

thf(zip_derived_cl6960,plain,
    ! [X0: $i] :
      ( ( isa @ ( f_relationexistsallfn @ X0 @ c_tptp_9_51 @ c_tptpcol_16_27189 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ) @ c_tptpcol_16_27189 )
      | ~ ( isa @ X0 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ) ),
    inference(demod,[status(thm)],[zip_derived_cl1900,zip_derived_cl6002]) ).

thf(ax1_308,axiom,
    ! [TERM: $i] :
      ( ( ( mtvisible @ c_currentworlddatacollectormt_nonhomocentric )
        & ( isa @ TERM @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ) )
     => ( tptp_9_51 @ ( f_relationexistsallfn @ TERM @ c_tptp_9_51 @ c_tptpcol_16_27189 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ) @ TERM ) ) ).

thf(zip_derived_cl307,plain,
    ! [X0: $i] :
      ( ~ ( mtvisible @ c_currentworlddatacollectormt_nonhomocentric )
      | ~ ( isa @ X0 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) )
      | ( tptp_9_51 @ ( f_relationexistsallfn @ X0 @ c_tptp_9_51 @ c_tptpcol_16_27189 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ) @ X0 ) ),
    inference(cnf,[status(esa)],[ax1_308]) ).

thf(ax1_618,axiom,
    ! [X: $i] :
      ( ( isa @ X @ c_tptpcol_16_27189 )
     => ( tptpcol_16_27189 @ X ) ) ).

thf(zip_derived_cl617,plain,
    ! [X0: $i] :
      ( ( tptpcol_16_27189 @ X0 )
      | ~ ( isa @ X0 @ c_tptpcol_16_27189 ) ),
    inference(cnf,[status(esa)],[ax1_618]) ).

thf(zip_derived_cl1131,plain,
    ! [X0: $i] :
      ( ~ ( tptp_9_51 @ X0 @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 )
      | ~ ( tptpcol_16_27189 @ X0 ) ),
    inference(cnf,[status(esa)],[zf_stmt_0]) ).

thf(zip_derived_cl1406,plain,
    ! [X0: $i] :
      ( ~ ( isa @ X0 @ c_tptpcol_16_27189 )
      | ~ ( tptp_9_51 @ X0 @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 ) ),
    inference('dp-resolution',[status(thm)],[zip_derived_cl617,zip_derived_cl1131]) ).

thf(zip_derived_cl1728,plain,
    ( ~ ( isa @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) )
    | ~ ( mtvisible @ c_currentworlddatacollectormt_nonhomocentric )
    | ~ ( isa @ ( f_relationexistsallfn @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 @ c_tptp_9_51 @ c_tptpcol_16_27189 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ) @ c_tptpcol_16_27189 ) ),
    inference('dp-resolution',[status(thm)],[zip_derived_cl307,zip_derived_cl1406]) ).

thf(ax1_226,axiom,
    isa @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ).

thf(zip_derived_cl225,plain,
    isa @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ),
    inference(cnf,[status(esa)],[ax1_226]) ).

thf(zip_derived_cl6002_005,plain,
    mtvisible @ c_currentworlddatacollectormt_nonhomocentric,
    inference(demod,[status(thm)],[zip_derived_cl5840,zip_derived_cl5998]) ).

thf(zip_derived_cl6931,plain,
    ~ ( isa @ ( f_relationexistsallfn @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 @ c_tptp_9_51 @ c_tptpcol_16_27189 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ) @ c_tptpcol_16_27189 ),
    inference(demod,[status(thm)],[zip_derived_cl1728,zip_derived_cl225,zip_derived_cl6002]) ).

thf(zip_derived_cl6964,plain,
    ~ ( isa @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ) ),
    inference('s_sup-',[status(thm)],[zip_derived_cl6960,zip_derived_cl6931]) ).

thf(zip_derived_cl225_006,plain,
    isa @ c_tptpnsubcollectionofwithrelationtofnshipobjectfoundinlocationcityofbostonma_802 @ ( f_subcollectionofwithrelationtofn @ c_ship @ c_objectfoundinlocation @ c_cityofbostonma ),
    inference(cnf,[status(esa)],[ax1_226]) ).

thf(zip_derived_cl6966,plain,
    $false,
    inference(demod,[status(thm)],[zip_derived_cl6964,zip_derived_cl225]) ).


%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.13  % Problem  : CSR060+2 : TPTP v8.1.2. Released v3.4.0.
% 0.00/0.14  % Command  : python3 /export/starexec/sandbox/solver/bin/portfolio.lams.parallel.py %s %d /export/starexec/sandbox/tmp/tmp.PmuIgPkZ0v true
% 0.15/0.35  % Computer : n026.cluster.edu
% 0.15/0.35  % Model    : x86_64 x86_64
% 0.15/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.35  % Memory   : 8042.1875MB
% 0.15/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.15/0.35  % CPULimit : 300
% 0.15/0.35  % WCLimit  : 300
% 0.15/0.35  % DateTime : Mon Aug 28 12:19:04 EDT 2023
% 0.15/0.35  % CPUTime  : 
% 0.15/0.35  % Running portfolio for 300 s
% 0.15/0.35  % File         : /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.15/0.36  % Number of cores: 8
% 0.15/0.36  % Python version: Python 3.6.8
% 0.15/0.36  % Running in FO mode
% 0.22/0.67  % Total configuration time : 435
% 0.22/0.67  % Estimated wc time : 1092
% 0.22/0.67  % Estimated cpu time (7 cpus) : 156.0
% 0.22/0.73  % /export/starexec/sandbox/solver/bin/fo/fo6_bce.sh running for 75s
% 0.22/0.76  % /export/starexec/sandbox/solver/bin/fo/fo3_bce.sh running for 75s
% 0.22/0.76  % /export/starexec/sandbox/solver/bin/fo/fo1_av.sh running for 75s
% 0.22/0.77  % /export/starexec/sandbox/solver/bin/fo/fo7.sh running for 63s
% 0.22/0.78  % /export/starexec/sandbox/solver/bin/fo/fo5.sh running for 50s
% 0.22/0.78  % /export/starexec/sandbox/solver/bin/fo/fo13.sh running for 50s
% 0.22/0.78  % /export/starexec/sandbox/solver/bin/fo/fo4.sh running for 50s
% 0.22/0.85  % /export/starexec/sandbox/solver/bin/fo/fo1_lcnf.sh running for 50s
% 1.61/0.91  % /export/starexec/sandbox/solver/bin/fo/fo17_bce.sh running for 50s
% 1.61/0.91  % /export/starexec/sandbox/solver/bin/fo/fo8.sh running for 50s
% 7.33/1.69  % Solved by fo/fo6_bce.sh.
% 7.33/1.69  % BCE start: 1133
% 7.33/1.69  % BCE eliminated: 98
% 7.33/1.69  % PE start: 1035
% 7.33/1.69  logic: neq
% 7.33/1.69  % PE eliminated: 113
% 7.33/1.69  % done 1947 iterations in 0.934s
% 7.33/1.69  % SZS status Theorem for '/export/starexec/sandbox/benchmark/theBenchmark.p'
% 7.33/1.69  % SZS output start Refutation
% See solution above
% 7.33/1.69  
% 7.33/1.69  
% 7.33/1.69  % Terminating...
% 8.00/1.79  % Runner terminated.
% 8.00/1.80  % Zipperpin 1.5 exiting
%------------------------------------------------------------------------------