Abstract
Abstruct- We investigate the benefits of using a synchronous data-flow language for programming critical real-time systems. These benefits concern ergonomy-since the dataflow approach meets traditional description tools used in this domain-and ability to support formal design and verification methods. We show, on a simple example, how the language LUSTRE, and its associated verification tool LESAR, can be used to design a program, to specify its critical properties, and to verify these properties. As the language LUSTRE and its uses have already been published in several papers (e.g., [U], [IS]), we put particular emphasis on program verification. A preliminary version of this paper has been published in [28].
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