The LSV seminar takes place on Tuesday at 11:00 AM. The usual location is the conference room at Pavillon des Jardins (venue). If you wish to be informed by e-mail about upcoming seminars, please contact Stéphane Le Roux and Matthias Fuegger.
The seminar is open to public and does not require any form of registration.
In this talk we consider one-counter machines in which counter updates can mention integer-valued parameters. Our main result is to show NP-completeness of the problem of determining whether a given state is reachable from the initial state for some value of the parameters. Membership in NP is shown by reduction to the existential fragment of Presburger arithmetic with divisibility.