User:Nicolas/Collections/ADVANCE D3.4 Model Checking
Overview
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Motivations / Decisions
B to TLA+
We are interested in validating the correctness of our translation from B to TLA+. Hence, we have conducted extensive tests to validate our approach. For example, we use a range of models encoding mathematical laws to stress test our translation. These have proven to be very useful for detecting bugs in our translation and libraries. In addition, we have uncovered a bug in the model checker TLC. Moreover, we use a wide variety of benchmarks, checking that ProB and TLC produce the same result and generate the same number of states.
The current version of our translator covers almost all operators of a abstract B machine. Moreover, TLC can be used to validate liveness properties (LTL formulas) for B specifications under fairness conditions. Our approach has been published at the ABZ’2014 conference in Toulouse. A technical report is available [1].
LTL Fairness
Theory Support
Physical Units
The physical units analysis has been further stabilised, several reported bugs have been fixed. Support for physical units has been extended to theories along with the general theory-related improvements of ProB mentioned in the previous paragraph. The plug-in was ported to Rodin 3, all bugfixes and changes could be back ported to Rodin 2 successfully.
Further extension to the unit analysis include:
- Support for the analysis of units throughout refinement relations.
- Support for abstract units like "length" that can later be concretised to standard SI units.
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Available Documentation
ProB
The ProB Website[2] is the place where we collect information on the ProB toolset. There are several tutorials on ProB available in the User manual section. We also supply documentation on extending ProB for developers.
In addition we run a bug tracking system[3] to document known bugs, workarounds and feature requests.
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Conclusion
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