Flow Logic for Process Calculi HANNE RIIS NIELSON, FLEMMING NIELSON, and HENRIK PILEGAARD, The Technical University of Denmark Flow Logic is an approach to statically determining the behavior of programs and processes. It borrows methods and techniques from Abstract Interpretation, Data Flow Analysis and Constraint Based Analysis while presenting the analysis in a style more reminiscent of Type Systems. Traditionally developed for programming languages, this article provides a tutorial development of the approach of Flow Logic for process calculi based on a decade of research. We rst develop a simple analysis for the -calculus; this consists of the speci cation, semantic soundness (in the form of subject reduction and adequacy results), and a Moore Family result showing that a least solution always exists, as well as providing insights on how to implement the analysis. We then show how to strengthen the analysis technology by introducing reachability components, interaction points, and localized environments, and nally, we extend it to a relational analysis. A Flow Logic is a program logic in the same sense that a Hoare s logic is. We conclude with an executive summary presenting the highlights of the approach from this perspective including a discussion of theoretical
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