Computer Sciences Dept.

Numeric Analysis of Array Operations

Denis Gopan, Thomas Reps, Mooly Sagiv

We present a numeric analysis that is capable of reasoning about array operations. In particular, the analysis is able to establish that all elements of an array have been initialized ("an array kill"), as well as to discover numeric constraints on values of initialized array elements, and to verify the correctness of comparison-based sorting algorithms. The analysis is based on the combination of canonical abstraction and summarizing numeric domains. We present a prototype implementation of the analysis and discuss our experience with applying this prototype to several kernal examples.

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