## lustrec / test / src / kind_fmcad08 / simulation / fast_1_e8_751.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 and not pre(X); |

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tel |

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node Edge (X: bool) returns (Y: bool); |

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let |

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Y = false -> (X and not pre(X) and not X and pre(X)); |

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tel |

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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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tel |

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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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tel |

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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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tel |

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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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tel |

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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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tel |

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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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tel |

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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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tel |

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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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tel |

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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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tel |