Section: New Results

Memory Abstraction

Abstraction of arrays based on non contiguous partitions

Participants : Jiangchao Liu, Xavier Rival [correspondant] .

Abstract interpretation, Memory abstraction, Array abstract domains. In [2], we studied array abstractions.

Array partitioning analyses split arrays into contiguous partitions to infer properties of cell sets. Such analyses cannot group together non contiguous cells, even when they have similar properties. We proposed an abstract domain which utilizes semantic properties to split array cells into groups. Cells with similar properties will be packed into groups and abstracted together. Additionally, groups are not necessarily contiguous. This abstract domain allows to infer complex array invariants in a fully automatic way. Experiments on examples from the Minix 1.1 memory management demonstrated its effectiveness.