43 lines
728 B
Text
43 lines
728 B
Text
type mode = H | M | L
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node server(max:int) = (load:int)
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contract
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assume (max >= 5)
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enforce (load <= max)
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with (c:mode)
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let
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switch c
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| H do load = 20
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| M do load = 10
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| L do load = 0
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end
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tel
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type degmode = Normal | Degraded
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node degraded_server(max:int) = (load:int)
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contract
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assume (max >= 10)
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enforce (load <= max)
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with (cm:mode;cd:degmode)
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let
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switch cd
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| Normal do
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switch cm
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| H do load = 20
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| M do load = 10
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| L do load = 0
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end
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| Degraded do load = 2
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end
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tel
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(* CHECK main *)
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node main() = (ok:bool)
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var max, load1, load2 : int;
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let
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load1 = 0;
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load2 = degraded_server(max);
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max = 10;
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ok = (load1 <= max) & (load2 <= max);
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tel
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