Title
Safety Problems Are Np-Complete For Flat Integer Programs With Octagonal Loops
Abstract
This paper proves the NP-completeness of the reachability problem for the class of flat counter machines with difference bounds and, more generally, octagonal relations, labeling the transitions on the loops. The proof is based on the fact that the sequence of powers {Ri}(i=1)(infinity) of such relations can be encoded as a periodic sequence of matrices, and that both the prefix and the period of this sequence are 2(O(||R||2)) in the size of the binary encoding ||R||(2) of a relation R. This result allows to characterize the complexity of the reachability problem for one of the most studied class of counter machines [6,10], and has a potential impact on other problems in program verification.
Year
DOI
Venue
2014
10.1007/978-3-642-54013-4_14
VERIFICATION, MODEL CHECKING, AND ABSTRACT INTERPRETATION: (VMCAI 2014)
DocType
Volume
ISSN
Conference
8318
0302-9743
Citations 
PageRank 
References 
4
0.41
18
Authors
3
Name
Order
Citations
PageRank
Marius Bozga12100127.83
Radu Iosif248342.44
Filip Konecný3211.74