Our paper “PROPhESY: A PRObabilistic ParamEter SYnthesis Tool” by  Christian Dehnert, Sebastian Junges, Nils Jansen,  Florian Corzilius, Matthias Volk, Harold Bruintjes,  Joost-Pieter Katoen, and Erika Ábrahám was accepted for publication at the 27th International Conference on Computer Aided Verification (CAV) 2015. The paper presents the tool PROPhESY, which is dedicated to model checking and parameter synthesis for parametric discrete-time Markov […]

The paper “A statistical approach for timed reachability in AADL models” by Harold Bruintjes, Joost-Pieter Katoen, and David Lesens (Airbus Defense & Space) has been accepted at the IEEE/IFIP International Conference on Dependable Systems and Networks (DSN 2015, acceptance rate 21,8%). The paper presents a statistical model checker for checking timed and stochastic AADL models against […]

The paper “Model Checking of Open Interval Markov Chains” by Souymodip Chakraborty and Joost-Pieter Katoen has been accepted at the 22nd International Conference on Analytical & Stochastic Modelling Techniques & Applications (ASMTA 2015).  The paper shows that interval MCs with open intervals can be verified by re-using techniques for closed interval MCs.

The paper “Counterexamples for Expected Rewards” by Tim Quatmann, Nils Jansen, Christian Dehnert, Ralf Wimmer, Erika Ábrahám, Joost-Pieter Katoen, and Bernd Becker was accepted for publication at the 20th International Symposium on Formal Methods (FM) 2015. The paper presents the first approaches on counterexamples for discrete-time Markov chains and expected reward properties. Methods are proposed to extract a minimal subsystem which already […]

Monday March 9, Jonathan Heinen successfully defended his PhD dissertation, entitled “Verification of Java Programs: A Graph Grammar Approach” for a jury consisting of Arend Rensink (Twente, NL), Thomas Seidl, Martin Grohe, and Joost-Pieter Katoen (all Aachen).  Jonathan’s dissertation deals with the automated verification of pointer operations in Java Bytecode programs using quantified LTL where […]

Carsten Kern, formerly a PhD student at Chair i2, recently obtained a Professorship at the Ostbayerische Technische Hochschule in Regensburg (Bavaria). We congratulate him with this success and wish him a lot of success in Regensburg!

On January 15, 2015, Arpit Sharma has successfully defended his dissertation on “Reduction Techniques for Nondeterministic and Probabilistic Systems”.  His defense committee consisted of Christof Löding, Holger Hermanns (Saarland University), Joost-Pieter Katoen and Bernhard Rumpe (see picture).  Arpit’s dissertation treats weighted lumpability as well as layering techniques for various models.

Our paper “A Greedy Approach for the Efficient Repair of Stochastic Models” by Shashank Pathak, Erika Ábrahám, Nils Jansen, Armando Tacchella, and Joost-Pieter Katoen was accepted at NFM 2015. The paper addresses the problem of model repair for parametric discrete-time Markov chains which consists of changing a model with minimal costs such that a desired property is satisfied. We present a […]

RWTH Aachen hosts the Young Researchers’ Conference “Frontiers in Formal Methods”, February 25-27 2015.  Young researchers (up to two years after completing their PhD thesis) are encouraged to submit a 2-5 page abstract by January 12, 2015 (extended firm deadline). More information can be found here.

Hongfei Fu has successfully defended his PhD dissertation entitled “Verifying Probabilistic Systems: New Algorithms and Complexity Results”.  Hongfei started his PhD research in autumn 2010.  His examiners were Antonin Kucera (Masaryk University, Brno), Wolfgang Thomas and Stefan Kowalewski (see picture).