Abstract

In this paper, we provide a formal definition of symbolic execution in terms of a symbolic transition system and prove its correctness with respect to an operational semantics which models the execution on concrete values. We first introduce such a formal model for a basic programming language with a statically fixed number of programming variables. This model is extended to a programming language with recursive procedures which are called by a call-by-value parameter mechanism. Finally, we show how to extend this latter model of symbolic execution to arrays and object-oriented languages which feature dynamically allocated variables.

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