Created
March 7, 2020 05:04
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| SPECIFICATION HC |
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| ---------------MODULE HourClock--------------- | |
| EXTENDS Naturals | |
| VARIABLE hr | |
| HCini == hr \in (1 .. 12) | |
| HCnxt == hr' = IF hr # 12 THEN hr + 1 ELSE 1 | |
| HC == HCini /\ [][HCnxt]_hr | |
| ---------------------------------------------- | |
| THEOREM HC => []HCini | |
| ============================================== |
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