Dynamic Communicating Automata and Branching High-Level MSCs
نویسندگان
چکیده
We study dynamic communicating automata (DCA), an extension of classical communicating finite-state machines that allows for dynamic creation of processes. The behavior of a DCA can be described as a set of message sequence charts (MSCs). While DCA serve as a model of an implementation, we propose branching high-level MSCs (bHMSCs) on the specification side. Our focus is on the implementability problem: given a bHMSC, can one construct an equivalent DCA? As this problem is undecidable, we introduce the notion of executability, a decidable necessary criterion for implementability. We show that executability of bHMSCs is EXPTIME-complete. We then identify a class of bHMSCs for which executability effectively implies implementability.
منابع مشابه
Realizability of Dynamic MSC Languages
We introduce dynamic communicating automata (DCA), an extension of communicating finite-state machines that allows for dynamic creation of processes. Their behavior can be described as sets of message sequence charts (MSCs). We consider the realizability problem for DCA: given a dynamic MSC grammar (a high-level MSC specification), is there a DCA defining the same set of MSCs? We show that this...
متن کاملThe Synthesis Problem of Netcharts
A netchart is basically a Petri net whose places are located at some process and whose transitions are labeled by message sequence charts (MSCs). Two recent papers showed independently that any globally-cooperative high-level MSC corresponds to the behaviors of some communicating finite-state machine — or equivalently a netchart. These difficult results rely either on Thomas’ graph acceptors or...
متن کاملPropositional Dynamic Logic with Converse and Repeat for Message-Passing Systems
The model checking problem for propositional dynamic logic (PDL) over message sequence charts (MSCs) and communicating finite state machines (CFMs) asks, given a channel bound B, a PDL formula φ and a CFM C, whether every existentially B-bounded MSC M accepted by C satisfies φ. Recently, it was shown that this problem is PSPACEcomplete. In the present work, we consider CRPDL over MSCs which is ...
متن کاملRequirements Analysis: Concept Extraction and Translation of Textual Specifications to Executable Models
Requirements engineering, the first phase of any software development project, is the Achilles’ heel of the whole development process, as requirements documents are often inconsistent and incomplete. In industrial requirements documents, natural language is the main presentation means. This results in the fact that the requirements documents are imprecise, incomplete, and inconsistent. A viable...
متن کاملAutomata and Logics for Timed Message Sequence Charts
We provide a framework for distributed systems that impose timing constraints on their executions. We propose a timed model of communicating finite-state machines, which communicate by exchanging messages through channels and use event clocks to generate collections of timed message sequence charts (T-MSCs). As a specification language, we propose a monadic secondorder logic equipped with timin...
متن کامل