## lustrec / test / src / kind_fmcad08 / misc / durationThm_2_e2_63.lus @ 22fe1c93

History | View | Annotate | Download (472 Bytes)

1 | 22fe1c93 | ploc | |
---|---|---|---|

2 | node Sofar( X : bool ) returns ( Sofar : bool ); |
||

3 | let |
||

4 | Sofar = X -> X and pre Sofar; |
||

5 | tel |
||

6 | node Age (p: bool) returns (age_of_p: int); |
||

7 | let |
||

8 | age_of_p = 0 -> if pre(p) then pre(age_of_p) -1+ 1 else 0; |
||

9 | tel |
||

10 | node top (k0: int; p, q, r, t : bool) returns (OK: bool); |
||

11 | var k: int; |
||

12 | env : bool; |
||

13 | let |
||

14 | k = k0-> pre(k); |
||

15 | env = Sofar((k>=1) and (Age(p)>=k => q) and (Age(r)>=k => t)); |
||

16 | OK = env => ((Age(p and r)>=k) => (q and t)); |
||

17 | --%MAIN; |
||

18 | --%PROPERTY OK=true; |
||

19 | tel |