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High-level Message Sequence Charts are a well-established formalism to specify scenarios of communications in telecommunication protocols. In order to deal with possibly unbounded specifications, we focus on star-connected HMSCs. We relate this subclass with recognizability and MSO-definability by means of a new connection with Mazurkiewicz traces. Our main(More)
Hierarchical Message Sequence Charts are a well-established formalism to specify telecommunication protocols. In this model, numerous undecidability results were obtained recently through algebraic approaches or relationships to Mazurkiewicz trace theory. We show how to check whether a rational language of MSCs requires only channels of finite capacity. In(More)
We show that any regular set of basic MSCs can be implemented by a deadlock-free communicating finite-state machine with local termination: Processes stop in local dead-states independently from the contents of channels and the local states of other processes. We present a self-contained, direct, and relatively simple construction based on a new notion(More)
We compare the expressive power of two automata-based finite-state models of concurrency. We show that Droste’s and Kuske’s coherent stably concurrent automata and Bednarczyk’s forward-stable asynchronous systems describe the same class of regular event structures. This connection subsumes a previous study by Schmitt which relates Stark’s trace automata to(More)
Zielonka’s theorem shows that each regular set of Mazurkiewicz traces can be implemented as a system of synchronized processes provided with some distributed control structure called an asynchronous automaton. This paper gives a new algorithm for the synthesis of a non-deterministic asynchronous automaton from a regular Mazurkiewicz trace language. Our(More)