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lustrec / test / src / kind_fmcad08 / simulation / fast_1_e7_2044_e7_1287.lus @ 22fe1c93

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node PosEdge (X: bool) returns (Y: bool);
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let
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    Y = false -> X or not pre(X);
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node Edge (X: bool) returns (Y: bool);
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let
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    Y = false -> (X or not pre(X) or not X and pre(X));
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node AtLeastOnceSince(X, Y: bool) returns (XsinceY: bool);
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let
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    XsinceY = if Y then X else (true -> X or pre(XsinceY));
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node MoreThanOneSec(X: bool) returns (Y: bool);
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let
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    Y = false -> pre(X) and X;
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node MoreThanTwoSec(X: bool) returns (Y: bool);
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let
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    Y = false -> pre(false -> pre(X) and X) and X;
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node one_button (ccseti, ccsetd, ccr: bool) returns (ob: bool);
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let
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    ob = ccseti and not ccsetd and not ccr or
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         not ccseti and ccsetd and not ccr or
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         not ccseti and not ccsetd and ccr;
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node prev_no_button (ccseti, ccsetd, ccr: bool)
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returns (pnb: bool);
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let
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    pnb = true -> pre(not ccseti and not ccsetd and not ccr);
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node one_button_accept (ccseti, ccsetd, ccr, ccont, cca: bool)
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returns (oba: bool);
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var
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   ob, pnb: bool;
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let
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    pnb = prev_no_button(ccseti, ccsetd, ccr);
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    ob = one_button(ccseti, ccsetd, ccr);
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    oba = if pnb and ob then
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              if not ccr then true
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              else AtLeastOnceSince(cca, PosEdge(ccont))
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          else false;
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node cc_allowed (ccont, igsw, bpa, cccanc, battok, gearok,
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         qfok, sdok, accok: bool; vs: int)
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returns (ccall: bool);
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let
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   ccall = ccont and not bpa and battok and gearok and
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           qfok and MoreThanOneSec(sdok) and 35 <= vs and
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           vs <= 200 and MoreThanTwoSec(accok) and not cccanc;
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node main (igsw, ccd, cconoff, bpa, cccanc, battok, gearok,
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     qfok, sdok, accok, ccseti, ccsetd, ccr: bool; vs: int)
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     returns (ccont, cca: bool);
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var
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  ccall: bool;
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let
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   ccont = false -> if Edge(igsw) or ccd or
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             pre(ccont) and PosEdge(cconoff) then false
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             else if pre(not ccont) and
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             PosEdge(cconoff) then true
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             else pre(ccont);
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   ccall = cc_allowed(ccont, igsw, bpa, cccanc, battok,
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                  gearok, qfok, sdok, accok, vs);
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   cca = false ->
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        if one_button_accept(ccseti, ccsetd, ccr, ccont,
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           pre(cca))
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           and ccall then true else if not ccall then false
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           else pre(cca);
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node top (igsw, ccd, cconoff, bpa, cccanc, battok, gearok,
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         qfok, sdok, accok, ccseti, ccsetd, ccr: bool; vs: int)
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         returns (OK : bool);
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var
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   ccont, cca: bool;
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   env : bool;
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let
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    (ccont, cca) = main(igsw, ccd, cconoff, bpa, cccanc, battok,
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                      gearok, qfok, sdok, accok, ccseti, ccsetd,
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                      ccr, vs);
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    env = not igsw -> true;
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    OK = if PosEdge(cca) then PosEdge(ccseti) or
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                PosEdge(ccsetd) or PosEdge(ccr) else true;
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  --%MAIN;
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  --%PROPERTY  OK=true;
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