Reachability Analysis for Timed Automata Using Partitioning Algorithms
نویسندگان
چکیده
The paper presents a new method for checking reachability properties of Timed Automata. The idea consists in on-the-fly verification of a property on a pseudo-bisimulating model generated by a modified partitioning algorithm. Pseudo-bisimulating models are often much smaller than forward-reachability graphs commonly used in reachability analysis. A theoretical description of the algorithm is supported by several experimental results.
منابع مشابه
Efficient Reachability Analysis and Refinement Checking of Timed Automata Using BDDs
For the formal specification and verification of real-time systems we use the modular formalism Cottbus Timed Automata (CTA), which is an extension of timed automata [AD94]. Matrix-based algorithms for the reachability analysis of timed automata are implemented in tools like Kronos, Uppaal, HyTech and Rabbit. A new BDD-based version of Rabbit, which supports also refinement checking, is now ava...
متن کاملDealing with practical limitations of distributed timed model checking for timed automata
Two base algorithms are known for reachability verification over timed automata. They are called forward and backwards, and traverse the automata edges using either successors or predecessors. Both usually work with a data structure called Difference Bound Matrices (DBMs). Although forward is better suited for on-the-fly construction of the model, the one known as backwards provides the basis f...
متن کاملImproving Search Order for Reachability Testing in Timed Automata
Standard algorithms for reachability analysis of timed automata are sensitive to the order in which the transitions of the automata are taken. To tackle this problem, we propose a ranking system and a waiting strategy. This paper discusses the reason why the search order matters and shows how a ranking system and a waiting strategy can be integrated into the standard reachability algorithm to a...
متن کاملReachability analysis for timed automata using max-plus algebra
We show that max-plus polyhedra are usable as a data structure in reachability analysis of timed automata. Drawing inspiration from the extensive work that has been done on difference bound matrices, as well as previous work on max-plus polyhedra in other areas, we develop the algorithms needed to perform forward and backward reachability analysis using maxplus polyhedra. To show that the appro...
متن کاملAn Extension of the Inverse Method to Probabilistic Timed Automata
Probabilistic timed automata can be used to model systems in which probabilistic and timing behaviour coexist. Verification of probabilistic timed automata models is generally performed with regard to a single reference valuation π0 of the timing parameters. Given such a parameter valuation, we present a method for obtaining automatically a constraint K0 on timing parameters for which the reach...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Fundam. Inform.
دوره 55 شماره
صفحات -
تاریخ انتشار 2003