%------------------------------------------------------------------------------
% File     : SnakeForV---1.0
% Problem  : SWC014-1 : TPTP v8.1.0. Released v2.4.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : vampire --input_syntax tptp --proof tptp --output_axiom_names on --mode portfolio --schedule snake_tptp_uns --cores 0 -t %d %s

% 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 : Wed Aug 31 18:38:12 EDT 2022

% Result   : Unsatisfiable 1.29s 0.52s
% Output   : Refutation 1.29s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   12
%            Number of leaves      :   26
% Syntax   : Number of formulae    :   79 (   9 unt;   0 def)
%            Number of atoms       :  251 (  51 equ)
%            Maximal formula atoms :    7 (   3 avg)
%            Number of connectives :  338 ( 166   ~; 164   |;   0   &)
%                                         (   8 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   4 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :   13 (  11 usr;   9 prp; 0-2 aty)
%            Number of functors    :   10 (  10 usr;   7 con; 0-2 aty)
%            Number of variables   :   22 (  22   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f450,plain,
    $false,
    inference(avatar_sat_refutation,[],[f250,f251,f252,f253,f272,f273,f291,f432,f449]) ).

fof(f449,plain,
    ( ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5
    | spl0_8 ),
    inference(avatar_contradiction_clause,[],[f448]) ).

fof(f448,plain,
    ( $false
    | ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5
    | spl0_8 ),
    inference(subsumption_resolution,[],[f447,f8]) ).

fof(f8,axiom,
    ssList(nil),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause8) ).

fof(f447,plain,
    ( ~ ssList(nil)
    | ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5
    | spl0_8 ),
    inference(subsumption_resolution,[],[f446,f337]) ).

fof(f337,plain,
    ( nil != sk4
    | ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5 ),
    inference(subsumption_resolution,[],[f336,f303]) ).

fof(f303,plain,
    ( nil != sk3
    | ~ spl0_1
    | ~ spl0_3 ),
    inference(subsumption_resolution,[],[f302,f229]) ).

fof(f229,plain,
    ( ssItem(sk5)
    | ~ spl0_1 ),
    inference(avatar_component_clause,[],[f227]) ).

fof(f227,plain,
    ( spl0_1
  <=> ssItem(sk5) ),
    introduced(avatar_definition,[new_symbols(naming,[spl0_1])]) ).

fof(f302,plain,
    ( ~ ssItem(sk5)
    | nil != sk3
    | ~ spl0_3 ),
    inference(subsumption_resolution,[],[f295,f8]) ).

fof(f295,plain,
    ( nil != sk3
    | ~ ssList(nil)
    | ~ ssItem(sk5)
    | ~ spl0_3 ),
    inference(superposition,[],[f98,f238]) ).

fof(f238,plain,
    ( sk3 = cons(sk5,nil)
    | ~ spl0_3 ),
    inference(avatar_component_clause,[],[f236]) ).

fof(f236,plain,
    ( spl0_3
  <=> sk3 = cons(sk5,nil) ),
    introduced(avatar_definition,[new_symbols(naming,[spl0_3])]) ).

fof(f98,axiom,
    ! [X0,X1] :
      ( nil != cons(X0,X1)
      | ~ ssItem(X0)
      | ~ ssList(X1) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause98) ).

fof(f336,plain,
    ( nil = sk3
    | nil != sk4
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5 ),
    inference(subsumption_resolution,[],[f335,f188]) ).

fof(f188,axiom,
    ssList(sk3),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_3) ).

fof(f335,plain,
    ( ~ ssList(sk3)
    | nil != sk4
    | nil = sk3
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5 ),
    inference(subsumption_resolution,[],[f326,f243]) ).

fof(f243,plain,
    ( ssList(sk6)
    | ~ spl0_4 ),
    inference(avatar_component_clause,[],[f241]) ).

fof(f241,plain,
    ( spl0_4
  <=> ssList(sk6) ),
    introduced(avatar_definition,[new_symbols(naming,[spl0_4])]) ).

fof(f326,plain,
    ( ~ ssList(sk6)
    | nil = sk3
    | nil != sk4
    | ~ ssList(sk3)
    | ~ spl0_3
    | ~ spl0_5 ),
    inference(superposition,[],[f118,f274]) ).

fof(f274,plain,
    ( sk4 = app(sk3,sk6)
    | ~ spl0_3
    | ~ spl0_5 ),
    inference(forward_demodulation,[],[f248,f238]) ).

fof(f248,plain,
    ( sk4 = app(cons(sk5,nil),sk6)
    | ~ spl0_5 ),
    inference(avatar_component_clause,[],[f246]) ).

fof(f246,plain,
    ( spl0_5
  <=> sk4 = app(cons(sk5,nil),sk6) ),
    introduced(avatar_definition,[new_symbols(naming,[spl0_5])]) ).

fof(f118,axiom,
    ! [X0,X1] :
      ( nil != app(X0,X1)
      | ~ ssList(X1)
      | ~ ssList(X0)
      | nil = X0 ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause118) ).

fof(f446,plain,
    ( nil = sk4
    | ~ ssList(nil)
    | spl0_8 ),
    inference(subsumption_resolution,[],[f435,f208]) ).

fof(f208,plain,
    ssList(sk4),
    inference(definition_unfolding,[],[f187,f190]) ).

fof(f190,axiom,
    sk2 = sk4,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_5) ).

fof(f187,axiom,
    ssList(sk2),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_2) ).

fof(f435,plain,
    ( ~ ssList(sk4)
    | nil = sk4
    | ~ ssList(nil)
    | spl0_8 ),
    inference(resolution,[],[f265,f100]) ).

fof(f100,axiom,
    ! [X0,X1] :
      ( neq(X1,X0)
      | X0 = X1
      | ~ ssList(X0)
      | ~ ssList(X1) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause100) ).

fof(f265,plain,
    ( ~ neq(nil,sk4)
    | spl0_8 ),
    inference(avatar_component_clause,[],[f263]) ).

fof(f263,plain,
    ( spl0_8
  <=> neq(nil,sk4) ),
    introduced(avatar_definition,[new_symbols(naming,[spl0_8])]) ).

fof(f432,plain,
    ( ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5
    | spl0_9 ),
    inference(avatar_contradiction_clause,[],[f431]) ).

fof(f431,plain,
    ( $false
    | ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5
    | spl0_9 ),
    inference(subsumption_resolution,[],[f425,f274]) ).

fof(f425,plain,
    ( sk4 != app(sk3,sk6)
    | ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5
    | spl0_9 ),
    inference(backward_demodulation,[],[f269,f421]) ).

fof(f421,plain,
    ( sk6 = tl(sk4)
    | ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5 ),
    inference(subsumption_resolution,[],[f420,f229]) ).

fof(f420,plain,
    ( sk6 = tl(sk4)
    | ~ ssItem(sk5)
    | ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5 ),
    inference(subsumption_resolution,[],[f404,f243]) ).

fof(f404,plain,
    ( ~ ssList(sk6)
    | ~ ssItem(sk5)
    | sk6 = tl(sk4)
    | ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5 ),
    inference(superposition,[],[f96,f395]) ).

fof(f395,plain,
    ( sk4 = cons(sk5,sk6)
    | ~ spl0_1
    | ~ spl0_3
    | ~ spl0_4
    | ~ spl0_5 ),
    inference(subsumption_resolution,[],[f373,f243]) ).

fof(f373,plain,
    ( sk4 = cons(sk5,sk6)
    | ~ ssList(sk6)
    | ~ spl0_1
    | ~ spl0_3
    | ~ spl0_5 ),
    inference(superposition,[],[f312,f274]) ).

fof(f312,plain,
    ( ! [X0] :
        ( app(sk3,X0) = cons(sk5,X0)
        | ~ ssList(X0) )
    | ~ spl0_1
    | ~ spl0_3 ),
    inference(subsumption_resolution,[],[f292,f229]) ).

fof(f292,plain,
    ( ! [X0] :
        ( ~ ssList(X0)
        | ~ ssItem(sk5)
        | app(sk3,X0) = cons(sk5,X0) )
    | ~ spl0_3 ),
    inference(superposition,[],[f120,f238]) ).

fof(f120,axiom,
    ! [X0,X1] :
      ( cons(X0,X1) = app(cons(X0,nil),X1)
      | ~ ssList(X1)
      | ~ ssItem(X0) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause120) ).

fof(f96,axiom,
    ! [X0,X1] :
      ( tl(cons(X0,X1)) = X1
      | ~ ssItem(X0)
      | ~ ssList(X1) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause96) ).

fof(f269,plain,
    ( sk4 != app(sk3,tl(sk4))
    | spl0_9 ),
    inference(avatar_component_clause,[],[f267]) ).

fof(f267,plain,
    ( spl0_9
  <=> sk4 = app(sk3,tl(sk4)) ),
    introduced(avatar_definition,[new_symbols(naming,[spl0_9])]) ).

fof(f291,plain,
    ( ~ spl0_2
    | spl0_6 ),
    inference(avatar_contradiction_clause,[],[f290]) ).

fof(f290,plain,
    ( $false
    | ~ spl0_2
    | spl0_6 ),
    inference(subsumption_resolution,[],[f288,f8]) ).

fof(f288,plain,
    ( ~ ssList(nil)
    | ~ spl0_2
    | spl0_6 ),
    inference(resolution,[],[f279,f223]) ).

fof(f223,plain,
    ! [X1] :
      ( ~ neq(X1,X1)
      | ~ ssList(X1) ),
    inference(duplicate_literal_removal,[],[f216]) ).

fof(f216,plain,
    ! [X1] :
      ( ~ ssList(X1)
      | ~ neq(X1,X1)
      | ~ ssList(X1) ),
    inference(equality_resolution,[],[f115]) ).

fof(f115,axiom,
    ! [X0,X1] :
      ( ~ ssList(X1)
      | X0 != X1
      | ~ ssList(X0)
      | ~ neq(X0,X1) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause115) ).

fof(f279,plain,
    ( neq(nil,nil)
    | ~ spl0_2
    | spl0_6 ),
    inference(backward_demodulation,[],[f233,f277]) ).

fof(f277,plain,
    ( nil = sk4
    | spl0_6 ),
    inference(subsumption_resolution,[],[f275,f208]) ).

fof(f275,plain,
    ( nil = sk4
    | ~ ssList(sk4)
    | spl0_6 ),
    inference(resolution,[],[f257,f75]) ).

fof(f75,axiom,
    ! [X0] :
      ( ssList(tl(X0))
      | nil = X0
      | ~ ssList(X0) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',clause75) ).

fof(f257,plain,
    ( ~ ssList(tl(sk4))
    | spl0_6 ),
    inference(avatar_component_clause,[],[f255]) ).

fof(f255,plain,
    ( spl0_6
  <=> ssList(tl(sk4)) ),
    introduced(avatar_definition,[new_symbols(naming,[spl0_6])]) ).

fof(f233,plain,
    ( neq(sk4,nil)
    | ~ spl0_2 ),
    inference(avatar_component_clause,[],[f231]) ).

fof(f231,plain,
    ( spl0_2
  <=> neq(sk4,nil) ),
    introduced(avatar_definition,[new_symbols(naming,[spl0_2])]) ).

fof(f273,plain,
    ( spl0_3
    | ~ spl0_2 ),
    inference(avatar_split_clause,[],[f202,f231,f236]) ).

fof(f202,axiom,
    ( ~ neq(sk4,nil)
    | sk3 = cons(sk5,nil) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_17) ).

fof(f272,plain,
    ( ~ spl0_6
    | ~ spl0_9
    | ~ spl0_2
    | ~ spl0_8 ),
    inference(avatar_split_clause,[],[f271,f263,f231,f267,f255]) ).

fof(f271,plain,
    ( ~ neq(nil,sk4)
    | ~ neq(sk4,nil)
    | sk4 != app(sk3,tl(sk4))
    | ~ ssList(tl(sk4)) ),
    inference(subsumption_resolution,[],[f221,f208]) ).

fof(f221,plain,
    ( ~ neq(nil,sk4)
    | ~ neq(sk4,nil)
    | sk4 != app(sk3,tl(sk4))
    | ~ ssList(sk4)
    | ~ ssList(tl(sk4)) ),
    inference(equality_resolution,[],[f220]) ).

fof(f220,plain,
    ! [X6] :
      ( ~ ssList(X6)
      | sk4 != X6
      | ~ neq(nil,sk4)
      | ~ neq(sk4,nil)
      | ~ ssList(tl(sk4))
      | app(sk3,tl(sk4)) != X6 ),
    inference(equality_resolution,[],[f213]) ).

fof(f213,plain,
    ! [X6,X7] :
      ( ~ ssList(X6)
      | tl(sk4) != X7
      | sk4 != X6
      | ~ neq(nil,sk4)
      | ~ neq(sk4,nil)
      | ~ ssList(X7)
      | app(sk3,X7) != X6 ),
    inference(definition_unfolding,[],[f199,f190,f190,f190,f191]) ).

fof(f191,axiom,
    sk1 = sk3,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_6) ).

fof(f199,axiom,
    ! [X6,X7] :
      ( ~ ssList(X6)
      | tl(sk2) != X7
      | sk2 != X6
      | ~ neq(nil,sk2)
      | ~ neq(sk4,nil)
      | ~ ssList(X7)
      | app(sk1,X7) != X6 ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_14) ).

fof(f253,plain,
    ( ~ spl0_2
    | spl0_4 ),
    inference(avatar_split_clause,[],[f201,f241,f231]) ).

fof(f201,axiom,
    ( ssList(sk6)
    | ~ neq(sk4,nil) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_16) ).

fof(f252,plain,
    spl0_2,
    inference(avatar_split_clause,[],[f225,f231]) ).

fof(f225,plain,
    neq(sk4,nil),
    inference(duplicate_literal_removal,[],[f204]) ).

fof(f204,plain,
    ( neq(sk4,nil)
    | neq(sk4,nil) ),
    inference(definition_unfolding,[],[f192,f190,f190]) ).

fof(f192,axiom,
    ( neq(sk2,nil)
    | neq(sk2,nil) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_7) ).

fof(f251,plain,
    ( spl0_1
    | ~ spl0_2 ),
    inference(avatar_split_clause,[],[f200,f231,f227]) ).

fof(f200,axiom,
    ( ~ neq(sk4,nil)
    | ssItem(sk5) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_15) ).

fof(f250,plain,
    ( spl0_5
    | ~ spl0_2 ),
    inference(avatar_split_clause,[],[f203,f231,f246]) ).

fof(f203,axiom,
    ( ~ neq(sk4,nil)
    | sk4 = app(cons(sk5,nil),sk6) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_18) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.12  % Problem    : SWC014-1 : TPTP v8.1.0. Released v2.4.0.
% 0.06/0.13  % Command    : vampire --input_syntax tptp --proof tptp --output_axiom_names on --mode portfolio --schedule snake_tptp_uns --cores 0 -t %d %s
% 0.12/0.34  % Computer : n005.cluster.edu
% 0.12/0.34  % Model    : x86_64 x86_64
% 0.12/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.34  % Memory   : 8042.1875MB
% 0.12/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.34  % CPULimit   : 300
% 0.12/0.34  % WCLimit    : 300
% 0.12/0.34  % DateTime   : Tue Aug 30 17:56:03 EDT 2022
% 0.12/0.34  % CPUTime    : 
% 0.20/0.48  % (27691)lrs+1004_1:734_av=off:awrs=converge:awrsf=70:br=off:ep=RSTC:erd=off:gs=on:nwc=3.0:s2a=on:s2agt=16:sp=occurrence:updr=off:urr=on:i=6:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/6Mi)
% 0.20/0.49  % (27695)dis+1011_3:29_av=off:awrs=decay:awrsf=32:bce=on:drc=off:fde=unused:gsp=on:irw=on:nwc=2.0:spb=goal_then_units:updr=off:urr=ec_only:i=29:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/29Mi)
% 0.20/0.49  % (27705)lrs+1011_1:1_aac=none:bsr=unit_only:ep=R:sac=on:sos=all:i=37:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/37Mi)
% 0.20/0.49  % (27696)fmb+10_1:1_fmbes=contour:fmbsr=2.0:fmbsso=input_usage:i=6:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/6Mi)
% 0.20/0.50  % (27685)lrs+10_5:1_br=off:fde=none:nwc=3.0:sd=1:sgt=10:sos=on:ss=axioms:urr=on:i=34:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/34Mi)
% 0.20/0.50  % (27688)lrs+1010_1:4_amm=off:bce=on:sd=1:sos=on:ss=included:i=51:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/51Mi)
% 0.20/0.50  % (27691)Instruction limit reached!
% 0.20/0.50  % (27691)------------------------------
% 0.20/0.50  % (27691)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 0.20/0.50  % (27691)Linked with Z3 4.8.13.0 f03d756e086f81f2596157241e0decfb1c982299 z3-4.8.4-5390-gf03d756e0
% 0.20/0.50  % (27691)Termination reason: Unknown
% 0.20/0.50  % (27691)Termination phase: Saturation
% 0.20/0.50  
% 0.20/0.50  % (27691)Memory used [KB]: 6012
% 0.20/0.50  % (27691)Time elapsed: 0.005 s
% 0.20/0.50  % (27691)Instructions burned: 8 (million)
% 0.20/0.50  % (27691)------------------------------
% 0.20/0.50  % (27691)------------------------------
% 0.20/0.50  % (27696)Instruction limit reached!
% 0.20/0.50  % (27696)------------------------------
% 0.20/0.50  % (27696)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 0.20/0.50  % (27696)Linked with Z3 4.8.13.0 f03d756e086f81f2596157241e0decfb1c982299 z3-4.8.4-5390-gf03d756e0
% 0.20/0.50  % (27696)Termination reason: Unknown
% 0.20/0.50  % (27696)Termination phase: Finite model building preprocessing
% 0.20/0.50  
% 0.20/0.50  % (27696)Memory used [KB]: 1535
% 0.20/0.50  % (27696)Time elapsed: 0.008 s
% 0.20/0.50  % (27696)Instructions burned: 7 (million)
% 0.20/0.50  % (27696)------------------------------
% 0.20/0.50  % (27696)------------------------------
% 0.20/0.50  % (27687)dis+21_1:1_av=off:er=filter:slsq=on:slsqc=0:slsqr=1,1:sp=frequency:to=lpo:i=49:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/49Mi)
% 0.20/0.51  % (27694)lrs+30_1:12_av=off:bs=unit_only:fsd=on:gs=on:lwlo=on:newcnf=on:slsq=on:slsqr=1,2:i=3:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/3Mi)
% 0.20/0.51  % (27688)First to succeed.
% 0.20/0.51  % (27694)Instruction limit reached!
% 0.20/0.51  % (27694)------------------------------
% 0.20/0.51  % (27694)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 0.20/0.51  % (27690)lrs+1010_1:1_bd=off:fd=off:fde=none:ins=3:sac=on:sos=on:spb=goal:to=lpo:i=51:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/51Mi)
% 0.20/0.51  % (27681)lrs+10_1:1_kws=precedence:lwlo=on:tgt=ground:i=99966:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/99966Mi)
% 0.20/0.51  % (27704)ott+21_1:1_erd=off:s2a=on:sac=on:sd=1:sgt=64:sos=on:ss=included:st=3.0:to=lpo:urr=on:i=97:si=on:rawr=on:rtra=on_0 on theBenchmark for (2999ds/97Mi)
% 1.29/0.52  % (27688)Refutation found. Thanks to Tanya!
% 1.29/0.52  % SZS status Unsatisfiable for theBenchmark
% 1.29/0.52  % SZS output start Proof for theBenchmark
% See solution above
% 1.29/0.52  % (27688)------------------------------
% 1.29/0.52  % (27688)Version: Vampire 4.7 (commit 807e37dd9 on 2022-08-23 09:55:27 +0200)
% 1.29/0.52  % (27688)Linked with Z3 4.8.13.0 f03d756e086f81f2596157241e0decfb1c982299 z3-4.8.4-5390-gf03d756e0
% 1.29/0.52  % (27688)Termination reason: Refutation
% 1.29/0.52  
% 1.29/0.52  % (27688)Memory used [KB]: 6140
% 1.29/0.52  % (27688)Time elapsed: 0.074 s
% 1.29/0.52  % (27688)Instructions burned: 9 (million)
% 1.29/0.52  % (27688)------------------------------
% 1.29/0.52  % (27688)------------------------------
% 1.29/0.52  % (27675)Success in time 0.165 s
%------------------------------------------------------------------------------