Optimizing Symbolic Model Checking for Constraint-Rich Models
This paper presents optimizations for verifying systems with complex time- invariant constraints. These constraints arise naturally from modeling physical systems, e.g., in establishing the relationship between different components in a system. To verify constraint-rich systems, we propose two new o...
Main Authors: | , , , |
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Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1999
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Subjects: | |
Online Access: | http://www.dtic.mil/docs/citations/ADA363778 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA363778 |
Summary: | This paper presents optimizations for verifying systems with complex time- invariant constraints. These constraints arise naturally from modeling physical systems, e.g., in establishing the relationship between different components in a system. To verify constraint-rich systems, we propose two new optimizations. The first optimization is a simple, yet powerful, extension of the conjunctive-partitioning algorithm. The second is a collection of BDD-based macro-extraction and macro-expansion algorithms to remove state variables. We show that these two optimizations are essential in verifying constraint-rich problems; in particular, this work has enabled the verification of fault diagnosis models of the Nomad robot (an Antarctic meteorite explorer) and of the NASA Deep Space One spacecraft. |
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