Chennai Mathematical Institute


2.00 p.m.
Efficient Emptiness Check for Timed Buechi Automata

B. Srivathsan
LaBRI, Bordeaux, France.


The Buechi non-emptiness problem for timed automata concerns deciding if a given automaton has an infinite non-Zeno run satisfying the Buechi accepting condition. The standard solution to this problem involves adding an auxiliary clock to take care of the non-Zenoness. In this paper, we show that this simple transformation may sometimes result in an exponential blowup. We propose a method avoiding this blowup.

This is joint work with F. Herbretau and Igor Walukiewicz.