Data structure repair using goal-directed reasoning

Data structure repair is a promising technique for enabling programs to execute successfully in the presence of otherwise fatal data structure corruption errors. Previous research in this field relied on the developer to write a specification to explicitly translate model repairs into concrete data structure repairs, raising the possibility of 1) incorrect translations causing the supposedly repaired concrete data structures to be inconsistent, and 2) repaired models with no corresponding concrete data structure representation. We present a new repair algorithm that uses goal-directed reasoning to automatically translate model repairs into concrete data structure repairs. This new repair algorithm eliminates the possibility of incorrect translations and repaired models with no corresponding representation as concrete data structures.