Decidability of timed language-inclusion for networks of real-time communicating sequential processes

Wang Yi, Bengt Jonsson

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

An important verification problem for concurrent systems in general is that of establishing whether one system is a correct implementation, or refinement, of another system. For untimed systems, trace inclusion (or variants such as failure inclusion) is often used as a criterion of refinement. The natural extension of this criterion to timed systems is timed trace-inclusion. Unfortunately, this problem is undecidable for the commonly used model of timed automata (i.e. finite-state automata extended with clocks) due to the expressive power of the model. This is a serious obstacle to the application of automatic verification methods to timed automata. In this paper, we show that the problem of timed trace-inclusion is decidable for a large and natural class of processes in Reed and Roscoe’s Timed CSP [RR86]. Essentially, this class includes static networks of processes with finite-control structure and real-valued clocks (modelled implicitly by a delay operator).

Original languageEnglish
Title of host publicationFoundations of Software Technology and Theoretical Computer Science - 14th Conference, 1994, Proceedings
EditorsP.S. Thiagarajan
PublisherSpringer Verlag
Pages243-255
Number of pages13
ISBN (Print)9783540587156
DOIs
StatePublished - 1994
Externally publishedYes
Event14th Conference on Foundations of Software Technology and Theoretical Computer Science, FST and TCS 1994 - Madras, India
Duration: 15 Dec 199417 Dec 1994

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume880 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference14th Conference on Foundations of Software Technology and Theoretical Computer Science, FST and TCS 1994
Country/TerritoryIndia
CityMadras
Period15/12/9417/12/94

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