# Semantics and correctness of nondeterministic flowchart programs with recursive procedures

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## Abstract

A class of nondeterministic flowchart programs with recursive procedures is defined. Their semantics is studied algebraically, in particular the notion of unfoldment. An extension of the inductive assertion method is introduced and shown to be sound and complete with a finite number of assertions.

## Keywords

Predicate Symbol Procedure Call Recursive Procedure Recursive Program Success Path
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© Springer-Verlag Berlin Heidelberg 1978