@inproceedings{VMCAI-2014-BozgaIK,
	author        = "Marius Bozga and Radu Iosif and Filip Konecný",
	booktitle     = "{Proceedings of the 15th International Conference on Verification, Model Checking and Abstract Interpretation}",
	doi           = "10.1007/978-3-642-54013-4_14",
	isbn          = "978-3-642-54012-7",
	pages         = "242--261",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Safety Problems Are NP-complete for Flat Integer Programs with Octagonal Loops}",
	volume        = 8318,
	year          = 2014,
}