Abstract
This paper presents a fully automatic verification technique for Simulink block diagrams, by combining a static value range analysis with symbolic execution. Our concept avoids a translation to other languages and, instead, extracts all necessary attributes from Simulink and interprets the model directly. With this technique, we show how user defined specifications can be validated using sound abstractions for primitives, including IEEE-754 floats, and custom data types. Moreover, we propose optimizations by exploiting the benefits of intervals and symbolic representations to apply our technique to larger models. We evaluate our solution against an industrial tool.
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Notes
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Our algorithm currently does not support all variable size operations, which are allowed by Simulink.
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In case \(u_2 = 0\), \(\varepsilon \) is used, which is considered in our verification.
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Dernehl, C., Hansen, N., Kowalewski, S. (2016). Combining Abstract Interpretation with Symbolic Execution for a Static Value Range Analysis of Block Diagrams. In: De Nicola, R., Kühn, E. (eds) Software Engineering and Formal Methods. SEFM 2016. Lecture Notes in Computer Science(), vol 9763. Springer, Cham. https://doi.org/10.1007/978-3-319-41591-8_10
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