Optimizing Symbolic Model Checking for Constraint-Rich Models ...

• Main Authors: Bwolen Yang, Simmons, Reid, Bryant, Randal, O'Hallaron, David
• Format: Other Non-Article Part of Journal/Newspaper
• Language: unknown
• Published: Carnegie Mellon University 1999
• Subjects: 80399 Computer Software not elsewhere classified; FOS Computer and information sciences; Antarctic; Antarc*
• Online Access: https://dx.doi.org/10.1184/r1/6625022.v1; https://kilthub.cmu.edu/articles/Optimizing_Symbolic_Model_Checking_for_Constraint-Rich_Models/6625022/1

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 conjunctivepartitioning 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. ...