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The Power of Priority Channel Systems

Christoph Haase ; Sylvain Schmitz ; Philippe Schnoebelen.

We introduce Priority Channel Systems, a new class of channel systems where messages carry a numeric priority and where higher-priority messages can supersede lower-priority messages preceding them in the fifo communication buffers. The decidability of safety and inevitability properties is shown&nbsp;[&hellip;]

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On Reachability for Unidirectional Channel Systems Extended with Regular Tests

Jancar Petr ; Prateek Karandikar ; Philippe Schnoebelen.

"Unidirectional channel systems" (Chambart & Schnoebelen, CONCUR 2008) are finite-state systems where one-way communication from a Sender to a Receiver goes via one reliable and one unreliable unbounded fifo channel. While reachability is decidable for these systems, equipping them with the&nbsp;[&hellip;]

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