Software

Automatic Generation of Object Usage Specifications From Large Method Traces

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Executive Summary

Formal specifications are used to identify programming errors, verify the correctness of programs, and as documentation. Unfortunately, producing them is error-prone and time-consuming, so they are rarely used in practice. Inferring specifications from a running application is a promising solution. However, to be practical, such an approach requires special techniques to treat large amounts of run-time data. The authors present a scalable dynamic analysis that infers specifications of correct method call sequences on multiple related objects. It preprocesses method traces to identify small sets of related objects and method calls which can be analyzed separately. They implemented their approach and applied the analysis to eleven real-world applications and more than 240 million run-time events.

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