Abstract

Current deadlock control approaches for S 3 PGR 2 (systems of simple sequential processes with general resources requirement) suffer from incorrect or restricted liveness characterisation based on the concept of deadly marked siphons (DMSs) or max-controlled siphons have been demonstrated. Non-live transitions may exist when there are no DMSs. It is live when all siphons are max-controlled - restricted since it may be live when not max-controlled. We replace it with a new liveness condition called max'-controlled siphons.

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