Bug Hunting with False Negatives
Calamé, Jens and Ioustinova, Natalia and Pol van de, Jaco and Sidorova, Natalia (2007) Bug Hunting with False Negatives. In: 6th International Conferenceon Integrated Formal Methods, IFM 2007, 2-5 July 2007, Oxford, UK.
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|Abstract:||Safe data abstractions are widely used for verification purposes. Positive verification results can be transferred from the abstract to the concrete system. When a property is violated in the abstract system, one still has to check whether a concrete violation scenario exists. However, even when the violation scenario is not reproducible in the concrete system (a false negative), it may still contain information on possible sources of bugs.
Here, we propose a bug hunting framework based on abstract violation scenarios. We first extract a violation pattern from one abstract violation scenario. The violation pattern represents multiple abstract violation scenarios, increasing the chance that a corresponding concrete violation exists. Then, we look for a concrete violation that corresponds to the violation pattern by using constraint solving techniques. Finally, we define the class of counterexamples that we can handle and argue correctness of the proposed framework.
Our method combines two formal techniques, model checking and constraint solving. Through an analysis of contracting and precise abstractions, we are able to integrate overapproximation by abstraction with concrete counterexample generation.
|Item Type:||Conference or Workshop Item|
|Copyright:||© 2007 Springer|
Electrical Engineering, Mathematics and Computer Science (EEMCS)
|Link to this item:||http://purl.utwente.nl/publications/61979|
|Export this item as:||BibTeX|
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