Interpolant generation without constructing resolution graph

Chih-Jen Hsu, Shao-Lun Huang, Chi-An Wu, Chung-Yang Huang

Abstract: In this paper, we proposed a novel interpolant generation algorithm without constructing the resolution graph of the unsatisfiability proof. Our algorithm generates the interpolant by building sub-interpolants from conflict analyses and then merges them based on the last decision conflict. The experimental results show that our algorithm has the advantages over the prior interpolant generation techniques in both memory usage and interpolation circuit size.