Proving Program Termination via Transition Invariants

We can prove termination of C programs by computing 'strong enough' transition invariants by abastract interpretation. In this thesis, we describe basic ingredients for an implementation of this computation. Namely, we show how to extract models form C programs (using GCA tool [7]) and how to construct an abstract domain of transition predicates. Furthermore, we propose a method for 'compacting' a model that improves the running time of the transtion invariant generation algorithm. We implement these ingredients and the proposed optimization, and practically evaluate their effectivenes