Predicate Pairing for program verification

@article{DEANGELIS2017PredicatePF,
  title={Predicate Pairing for program verification},
  author={Emanuele DE ANGELIS and Fabio Fioravanti and Alberto Pettorossi and Maurizio Proietti},
  journal={Theory and Practice of Logic Programming},
  year={2017},
  volume={18},
  pages={126 - 166}
}
It is well-known that the verification of partial correctness properties of imperative programs can be reduced to the satisfiability problem for constrained Horn clauses (CHCs. [] Key Method model. The converse does not hold in general, and we provide suitable conditions under which the transformed clauses have an 𝓐-definable model if and only if the original ones have an 𝓐-definable model. Then, we present a strategy, called Predicate Pairing, which guides the application of the transformation rules with…
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