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We present a method for specifying and implementing algorithms for the analysis of Petri nets. It is formally grounded in relational algebra. Specifications are written in ordinary predicate logic and then transformed systematically into relational programs which can be executed directly in RELVIEW, a graphical computer system for calculating with relations. Our method yields programs that are correct by construction. Its simplicity and efficiency is illustrated in many examples.

Relation-algebraic analysis of Petri nets with RELVIEW