Extracting Safe Thread Schedules from Incomplete Model Checking Results

Metzler, Patrick and Suri, Neeraj and Weissenbacher, Georg (2019) Extracting Safe Thread Schedules from Incomplete Model Checking Results. In: Model Checking Software. Springer, pp. 153-171. ISBN 9783030309220

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Abstract

Model checkers frequently fail to completely verify a concurrent program, even if partial-order reduction is applied. The verification engineer is left in doubt whether the program is safe and the effort towards verifying the program is wasted. We present a technique that uses the results of such incomplete verification attempts to construct a (fair) scheduler that allows the safe execution of the partially verified concurrent program. This scheduler restricts the execution to schedules that have been proven safe (and prevents executions that were found to be erroneous). We evaluate the performance of our technique and show how it can be improved using partial-order reduction. While constraining the scheduler results in a considerable performance penalty in general, we show that in some cases our approach—somewhat surprisingly—even leads to faster executions.

Item Type:
Contribution in Book/Report/Proceedings
ID Code:
137941
Deposited By:
Deposited On:
15 Oct 2019 14:15
Refereed?:
No
Published?:
Published
Last Modified:
21 Jul 2020 10:46