• 26/07/17 results and solutions uploaded
  • 12/06/17 parallel problems updated
  • 26/05/17 parallel problems released
  • 01/03/17 parallel training problems released
  • 15/02/17 sequential problems released
  • 01/02/17 training sequential up, challenge problems postponed
  • 27/01/17 update on parallel problems

Important Dates:

  • 12/07/17
  • 01/02/17
       Release Sequential Training    Problems
  • 15/02/17
       Release Sequential    Problems
  • 01/03/17
       Release Parallel Training    Problems
  • 26/05/17
       Release Parallel Problems
  • 01/02/17 - 01/07/17
       Challenge Phase
  • 15/02/17 - 01/07/17
       Solution Submission


The RERS Challenge 2017 has ended with the formal announcement of the winners at the RERS Workshop 2017, co-located with ISSTA and SPIN 2017. On this page we present the 7 teams that participated in this year's challenge and list the corresponding results.
In order to provide a more fine-grained view of the results, we also display ranking results per category for those teams who participated in the ranking. For the competition however, only the results per track (Sequential Reachability, Sequential LTL, Parallel LTL) were considered. For more details on the evaluation, please refer to the challenge rules.

List of participants

  • LMU Munich
    Karlheinz Friedberger
    LMU Munich, Germany
    Tools: CPAchecker (developer)
  • Nimble Research
    Gerard Holzmann
    Nimble Research, USA
    Tools: Swarm (developer), Spin (developer)
  • Twente
    Jeroen Meijer and Jaco van de Pol
    University of Twente, The Netherlands
    Tools: LTSmin (developer), LearnLib
  • Lübeck
    Anton Pirogov
    University of Lübeck, Germany
    Tools: flat-checker (developer)
  • LLNL
    Markus Schordan, Marc Jasper, and Maximilian Fecke
    Lawrence Livermore National Laboratory, USA
    Tools: CodeThorn (developer)
  • Radboud/Luxembourg
    Christian Hammerschmidt2, Joshua Moerman1, and Rick Smetsers1
    1: Radboud University Nijmegen, The Netherlands
    2: University of Luxembourg, Luxembourg

    Tools: Learnlib, test suite based on adaptive distinguishing sequences (developer), AFL, FlexFringe (developer)
  • VSL Delaware
    Yihao Yan
    VSL, University of Delaware, USA
    Tools: Tool based on GMC (developer)


          Category           LMU Munich Nimble Research Twente Lübeck LLNL Radboud/
VSL Delaware
Data Structures
Data Structures
Parallel LTL: Concurrency Ladder

Ranking evaluation

The following tables list the results of the RERS 2017 ranking evaluation. Drop-down lists below the tables allow to view ranking results for each category individually. Note that these category-specific scores did not matter for the ranking and are provided as additional information, only the scores for each track were considered. Note that a team's track score may be different than the sum of all corresponding track categories due to the exponential penalty for wrong results.

For detailed information about the solved properties you can download a .zip archive that contains the normalized answers of those who participated in the ranking as well as the official solutions as .csv files. The solutions to this year's sequential training problems are included: These training problems are enumerated as 91-96 instead of 1-6 in the solution files.

Solutions with counterexamples for the sequential tracks can be found on the Sequential LTL and Sequential Reachability pages.

Sequential Reachability: Track ranking

RankNameScoreWrong answers
4LMU Munich-428

Sequential LTL: Track ranking

RankNameScoreWrong answers

Parallel LTL: Track ranking

RankNameScoreWrong answers
1Nimble Research2642

The following drop-down lists allow you to view the ranking evaluation for individual categories. Please click "view!" once selected.

Sequential Reachability

Sequential LTL

Parallel LTL