Roberto Cavada Alessandro Cimatti Anders Franzén Krishnamani Kalyanasundaram Marco Roveri R. K. Shyamasundar Computing Predicate Abstractions by Integrating BDDs and SMT Solvers. 69-76 2007 conf/fmcad/2007 FMCAD http://doi.ieeecomputersociety.org/10.1109/FMCAD.2007.18 db/conf/fmcad/fmcad2007.html#CavadaCFKRS07