Abstract
To specify and verify the real-time behaviour of programs, a formalism based on Hoare triples (precondition, program, postcondition) is introduced. Programs are written in an Occam-like programming language with synchronous message passing along unidirectional channels. Real-time is incorporated by delaystatements and time-outs. To deal with reactive systems, a Hoare triple is extended with a third assertion, called commitment, which expresses the real-time communication interface of the program. We formulate a compositional axiomatization for these extended Hoare triples, first using the maximal parallelism assumption which represents the situation in which each process has its own processor. Next this framework is generalized to multiprogramming where several processes may share a single processor and scheduling is based on priorities of statements.
Partially supported by ESPRIT-BRA project 3096 (SPEC).
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© 1992 Springer-Verlag Berlin Heidelberg
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Hooman, J. (1992). Compositional verification of real-time systems using extended Hoare triples. In: de Bakker, J.W., Huizing, C., de Roever, W.P., Rozenberg, G. (eds) Real-Time: Theory in Practice. REX 1991. Lecture Notes in Computer Science, vol 600. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0031996
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DOI: https://doi.org/10.1007/BFb0031996
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