Dear colleagues, This is a reminder for the closing of the early registrations on Wednesday 15 of May. The conference will feature 3 keynote speakers: Pascal Van Hentenryck, University of Michigan (USA) Hande Yaman, Bilkent University (Turkey) Rico Zenklusen, ETH (Switzerland) 2 tutorial talks: Ruslan Sadykov, INRIA Bordeaux (France) Sandra Ulrich Ngueveu, LAAS-CNRS (France) and 58 contributed presentations, see: https://inoc2019.sciencesconf.org/resource/page/id/15 See you in Avignon, Michael Poss, for the organization committee