@inproceedings{BFGKV05, author = "D. Bustan and A. Flaisher and O. Grumberg and O. Kupferman and M.Y. Vardi", title = "Regular vacuity", booktitle = "13th Advanced Research Working Conference on Correct Hardware Design and Verification Methods", series = "Lecture Notes in Computer Science", volume = "3725", pages = "191-206", publisher = "Springer-Verlag", year = "2005" }