lustrec / test / src / kind_fmcad08 / simulation / PRODUCER_CONSUMMER_luke_2.lus @ 22fe1c93
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node First( X : int ) returns ( First : int ); |
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let |
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First = X -> pre First; |
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tel |
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node Sofar( X : bool ) returns ( Sofar : bool ); |
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let |
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Sofar = X -> X and pre Sofar; |
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tel |
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node excludes3( X1, X2, X3 : bool ) returns ( excludes : bool ); |
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let |
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excludes = not ( X1 and X2 or X1 and X3 or X2 and X3 ); |
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tel |
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--const a_init = 20; |
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node PRODUCER_CONSUMMER(etat1, etat2, etat3 : bool; a_init : int |
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) returns(i, b, a, o1, o2 : int); |
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var |
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garde1, garde2, garde3 : bool; |
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let |
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garde1 = pre i >= 1; |
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garde2 = pre b >= 1; |
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garde3 = pre b >= 1; |
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|
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-- assert #(etat1, etat2, etat3); |
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-- assert a_init >= 0; |
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|
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i = a -> |
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if(etat1) then if(garde1) then pre i -1 else pre i else |
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pre i; |
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|
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b = 0 -> |
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if(etat1) then if(garde1) then pre b+1 else pre b else |
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if(etat2) then if(garde2) then pre b-1 else pre b else |
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if(garde3) then pre b-1 else pre b; |
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a = a_init -> pre a; |
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o1 = 0 -> |
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if(etat2) then if(garde2) then pre o1+1 else pre o1 else |
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pre o1; |
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|
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o2 = 0 -> |
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if(etat3) then if(garde3) then pre o2+1 else pre o2 else |
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pre o2; |
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|
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tel |
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node top( etat1, etat2, etat3 : bool; a_init : int ) |
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returns ( OK : bool ); |
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var i, b, a, o1, o2 : int; |
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env : bool; |
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let |
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( i, b, a, o1, o2 ) = PRODUCER_CONSUMMER (etat1, etat2, etat3, a_init ); |
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env = Sofar( excludes3( etat1, etat2, etat3 ) ) and |
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First( a_init ) > 0; |
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OK = env => o1+o2 <= a; |
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--%PROPERTY OK=true; |
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--%MAIN; |
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tel |