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Automata Based Symbolic Reasoning in Hardware Verification

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons44075

Basin,  David A.
Programming Logics, MPI for Informatics, Max Planck Society;

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Zitation

Basin, D. A., & Klarlund, N. (1998). Automata Based Symbolic Reasoning in Hardware Verification. Formal Methods in Systems Design, 13(3), 255-288.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-3819-F
Zusammenfassung
We present a new approach to hardware verification based on describing circuits in Monadic Second-order Logic (MSL). We show how to use this logic to represent generic designs like $n$-bit adders, which are parameterized in space, and sequential circuits, where time is an unbounded parameter. MSL admits a decision procedure, implemented in the MONA tool, which reduces formulas to canonical automata. The decision problem for MSL is non-elementary decidable and thus unlikely to be usable in practice. However, we have used MONA to automatically verify, or find errors in, a number of circuits studied in the literature. Previously published machine proofs of the same circuits are based on deduction and may involve substantial interaction with the user. Moreover, our approach is orders of magnitude faster for the examples considered. We show why the underlying computations are feasible and how our use of MONA generalizes standard BDD-based hardware reasoning.