Section: Partnerships and Cooperations

International Research Visitors

Visits of International Scientists

• Maria Paola Bonacina.

  • Date: 11 February 2019 – 16 February 2019.

  • Institution: Università degli Studi di Verona, Italy.

  • Host: Pascal Fontaine.

  Maria Paola Bonacina is a professor at the Università degli Studi di Verona, Italy. She is well known in the community for her numerous works in the field of automated reasoning, notably in SMT, combination of theories, and procedures for first-order logic. During her one-week stay in Nancy, we particularly discussed SGGS (semantically-guided goal-sensitive theorem proving) as a means of inspiration for instantiation in SMT. We also worked on a review paper on combination of theories, published in 2019 [49].

• Armin Biere.

  • Date: 27 May 2019 – 29 May 2019.

  • Institution: Johannes Keppler Universität, Linz, Austria.

  • Host: Christoph Weidenbach.

  Armin Biere is professor at the University of Linz. He is a leading researcher in the SAT community. During his stay we discussed recent developments in SAT solving. In particular, resolution based inference and reduction mechanisms beyond subsumption resolution.

Internships

• Manon Blanc

  • Date: 1 June 2019 – 31 July 2019

  • Institution: ENS Cachan

  • Host: Pascal Fontaine

  In her bachelor thesis, Manon Blanc studied and experimentally evaluated two different subtropical methods for handling polynomial constraints within SMT.

• Mehran Aghabozorgi

  • Date: 5 August 2019 – 7 October 2019

  • Institution: Isfahan University of Technology, Iran

  • Host: Christoph Weidenbach

  Mehran worked on algorithms enhancing SAT pre- and inprocessing. He implemented blocked clause elimination as well as a variable elimination algorithm aiming at smaller clause sets.

Visits to International Teams

Research Stays Abroad

• Thomas Sturm visited the University of Bonn (Institute of Computer Science II) for 4 weeks during 2019, and the University of Kassel (Mathematical Institute). Topics included perspectives for SMT Solving in symbolic reaction network analysis, toricity of steady state varieties, scaling methods for systems of ordinary differential equations (ODE), and logic approaches for the classification of real singularities of ODE.