Staged Program Repair in SPR

Abstract

We present SPR, a new program repair system that uses condition synthesis to instantiate transformation schemas to repair program defects. SPR s staged repair strategy combines a rich space of potential repairs with a targeted search algorithm that makes this space viably searchable in practice. This strategy enables SPR to successfully find correct program repairs within a space that contains many meaningful and useful patches. The majority of these correct repairs are not within the search spaces of previous automatic program repair systems.