Reachability example
Reachability example: use of reax to chech reachability of states.master
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heptc -target ctrln reachability.ept
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reax -a 'sB:r' reachability_ctrln/reach_verif.ctrln
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node reach_verif(day_event,night_event,noon_event:bool) = (day_state,evening_state:bool)
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contract
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reachable evening_state
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let
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automaton
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state Night do day_state = false; evening_state = false
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until day_event then Day
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state Day do
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day_state = true;
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automaton
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state Morning do
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evening_state = false;
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until noon_event then Afternoon
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state Afternoon do
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evening_state = false;
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until night_event then Evening
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state Evening do
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evening_state = true;
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until day_event then Morning
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end
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until night_event then Night
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end
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tel
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