TEMPEST - Synthesis Tool for Reactive Systems and Shields in Probabilistic Environments

Research output: Contribution to conferencePaper

Abstract

We present Tempest, a synthesis tool to automatically create
correct-by-construction reactive systems and shields from qualitative or quantitative specifications in probabilistic environments. A shield is a special type of reactive system used for run-time enforcement; i.e., a shield enforces a given qualitative or quantitative specification of a running system while interfering with its operation as little as possible. Shields that enforce a qualitative or quantitative specification are called safety-shields or optimal-shields, respectively. Safety-shields can be implemented as
pre-shields or as post-shields, optimal-shields are implemented as postshields. Pre-shields are placed before the system and restrict the choices of the system. Post-shields are implemented after the system and are able to overwrite the system’s output. Tempest is based on the probabilistic model checker Storm, adding model checking algorithms for stochastic games with safety and mean-payoff objectives. To the best of our knowledge, Tempest is the only synthesis tool able to solve 2 1/2-player games with mean-payoff objectives without restrictions on the state space. Furthermore, Tempest adds the functionality to synthesize safe and optimal strategies that implement reactive systems and shields.
Original languageEnglish
Publication statusAccepted/In press - 2021
Event19th International Symposium on Automated Technology for Verification and Analysis - Virtuell, Australia
Duration: 18 Oct 202122 Oct 2021

Conference

Conference19th International Symposium on Automated Technology for Verification and Analysis
Abbreviated titleATVA'21
CountryAustralia
CityVirtuell
Period18/10/2122/10/21

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