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Abstract. KVEST -Kernel VErification and Specification Technology -is based on automated test generation from formal specifications in the RAISE specification language. The technology was developed under contract with Nortel Networks. As of 1999, the methodology and toolset have been applied in three industrial project dealing with verification of large-scale telecommunication software. The first project, the Kernel Verification project, gives its name to the methodology and the toolset as a whole. Results of this project are available from the Formal Methods Europe Application database [13]. It is one of the biggest formal method application presented in the database. This paper provides a brief description of the approach, comparison to related works, and statistics on completed projects.

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The article presents an approach to model based testing of complex systems based on a generalization of finite state machines (FSM) and input output state machines (IOSM). The approach presented is used in the context of UniTesK specification based test development method. The results of its practical applications are also discussed. Practical experience demonstrates the applicability of the approach for model based testing of protocol implementations, distributed and concurrent systems, and real-time systems. This work stems from ISPRAS results of academic research and industrial application of formal techniques in verification and testing [1].