Abstract
This paper contributes a technique that expands the set of object invariants that one can reason about in modular verification. The technique uses history invariants, two-state invariants that describe the evolution of data values. The technique enables a flexible new way to specify and verify variations of the observer pattern, including iterators. The paper details history invariants and the new kind of object invariants, and proves a soundness theorem.
Keywords
- Visible State
- Representation Object
- Proof Obligation
- Java Modeling Language
- Separation Logic
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Leino, K.R.M., Schulte, W. (2007). Using History Invariants to Verify Observers. In: De Nicola, R. (eds) Programming Languages and Systems. ESOP 2007. Lecture Notes in Computer Science, vol 4421. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-71316-6_7
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