@proceedings {240, title = {Property Directed Equivalence via Abstract Simulation}, year = {2016}, author = {Grigory Fedyukovich and Gurfinkel, A. and Natasha Sharygina} } @conference {227, title = {Automated Discovery of Simulation Between Programs}, booktitle = {LPAR}, year = {2015}, author = {Grigory Fedyukovich and Gurfinkel, A. and Natasha Sharygina} } @conference {183, title = {Incremental Verification of Compiler Optimizations}, booktitle = {NASA Formal Methods (NFM)}, year = {2014}, address = {Houston, Texas, USA}, abstract = {
Optimizations are widely used along the lifecycle of software.\ However, proving the equivalence between original and optimized versions is difficult. In this paper, we propose a technique to incrementally\ verify different versions of a program with respect to a fixed property. We\ exploit a safety proof of a program given by a safe inductive invariant.\ For each optimization, such invariants are adapted to be a valid safety\ proof of the optimized program (if possible). The cost of the adaptation depends on the impact of the optimization and is often less than\ an entire re-verification of the optimized program. We have developed a\ preliminary implementation of our technique in the context of Software\ Model Checking. Our evaluation of the technique on different classes of\ industrial programs and standard LLVM optimizations confirms that the\ optimized programs can be re-verified efficiently.
}, author = {Grigory Fedyukovich and Gurfinkel, A. and Natasha Sharygina} } @conference {147, title = {Interpolation Properties and SAT-based Model Checking}, booktitle = {11th International Symposium on Automated Technology for Verification and Analysis (ATVA)}, year = {2013}, author = {Gurfinkel, A. and Rollini, S. F. and Natasha Sharygina} }