In particular, we describe the first model checking based framework to handle an unbounded number of threads for these data structures. We explain how a parameterized model checking technique can be exploited to mechanize the analysis of access control policies. Software model checking is the algorithmic analysis of programs to prove prop erties of. Our approach to applying model checking to software hinges on identifying appropri ate abstractions. The problem is known to be undecidable in general, even when restricted to reachability properties. Jun 24, 2016 the goal of parameterized verification is to prove the correctness of a system specification regardless of the number of its components. Most parameterized complexity classes are defined in terms of a parameterized version of the boolean satisfiability problem the socalled weighted. Parameterized model checking by enhancing the spin checker. Citeseerx software tools for technology transfer manuscript. Parameterized concurrent programs are concurrent programs with an unbounded number of threads, executing similar code or code chosen from a. Our implementation is a succinct formulation of the algorithms using.
The fact that industry intel, ibm, motorola is starting to use model checking is encouraging. The ability to reason automatically about entire families of similar statetransition systems is an important research goal. Kemnitzer, baumuller is a wellknown manufacturer of intelligent drive and automation systems as well as software for. We present localglobal finite state machines lgfsms as a model for a certain class of multithreaded libraries. The model checking algorithms for parametric timed system are then proposed. This is typically associated with hardware or software systems, where the specification contains liveness requirements such as avoidance of livelock as well as safety. Modelchecking parameterized concurrent programs using. The 11 revised full papers presented together with 5 tool papers and 4 invited talks were. We consider the model checking problem for a particular class of parameterized systems. Parameterized model checking of tokenpassing systems. In order to solve such a problem algorithmically, both the model of the system and its specification are formulated in some precise mathematical language. However, application of these results requires a deep. Such systems are common in distributed computing and reallife software systems. Modeling of possible attack strategies there are different attack strategies that could be adopted.
More recently, software model checking has been in. Parameterized modelchecking for timedsystems with conjunctive guards extended version authors. Parameterized model checking of ringbased message passing. Decidability of parameterized verification ebook, 2015. Solutions for restricted classes of systems and properties.
Parameterized model checking of synchronous distributed. Fiil 2019 2020 software model checking cubicle an smt based. Parameterized model checking of fine grained concurrency. To overcome this limitation, several techniques have. In this thesis we consider several problems relevant to model checking these protocols. In computer science, model checking or property checking is a method for checking whether a finitestate model of a system meets a given specification. Regular model checking is a form of symbolic model checking for parameterized and infinitestate systems whose states can be represented as words of arbitrary length over a finite alphabet, in which regular sets of words are used to represent sets of states. Introduction a parameterized system is a class of software system that consists of variable number of homogeneous processes, where the parameter denotes the number of homogeneous pro. The date of receipt and acceptance will be inserted by the editor abstract. Parameterized model checking by enhancing the spin checker shanshan liu, ankit goel, abhik roychoudhury school of computing national university of singapore parameterized systems are characterized by the presence of a large or even unbounded number of behaviorally similar processes, and they often appear in distributed controllers and protocols.
Verifying parameterized systems 727 current model checkers can only verify a single statetransition system at a time. This is nontrivial, since solutions to the parameterized verification problem often relies on the processes to be symmetric, i. In this paper, we describe our key insights from murphi based parameterized model checking of these data structures. Verification via model checking typically becomes impracticable due to the state space explosion caused by the system parameters and concurrency.
Vmcai 2014 proceedings of the 15th international conference on verification, model checking, and abstract interpretation volume 8318 pages 262281 san diego, ca, usa january 19 21, 2014. Parametric modelchecking leverage this shortcoming by iden. The parameterized model checking problem pmcp is to decide whether a temporal property holds for a uniform family of systems, com. Parameterized definition of parameterized by the free. Parameterized verification of transactional memories.
Efficient parametric model checking using domain knowledge arxiv. Many e orts were invested into extension of model checking to the parameterized case, which led to numerous parameterized model checking techniques see 9 for a recent survey. Parameterized model checking of faulttolerant distributed algorithms by abstraction annu john, igor konnov, ulrich schmid, helmut veith, josef widder vienna university of technology tu wien abstractwe introduce an automated parameterized veri. Software tools for technology transfer manuscript no. Fiil 2019 2020 software model checking cubicle an smt. The most recent discussion of the tool can be found in the the paper at isola18. These techniques apply to algorithms that are parameterized in the number n of identical symmetric processes, among which at most t processes are faulty, and whose process code contains threshold guards.
Modeling languages programming languages model checking systematic testing verisoft. A parameterized model checking in mobile access wireless sensor networks under byzantine attacks international journal of scientific engineering and technology research volume. Parameterized model checking of networks of timed automata. Parameterized modelchecking of timed systems with conjunctive guards. It traces its roots to logic and theorem proving, both to. Verifying software poses significant problems for model checking.
Model checking sequential consistency and parameterized protocols. Software tends to be less structured than hardware. In order to consider the tire performance under such conditions as part of the vehicle control system, an adequate tire model is needed. On the other hand, the parameterized model checking literature contains a wealth of techniques for systems of classical architectures. Romeo, real time, time petri nets, stopwatch parametric petri nets, tctl. Formal methods for executable software models pp 122171 cite as.
Applying parametric modelchecking techniques for reusing real. In the modelchecking literature, parameterized programs have been heavily investigated see section of related work, as they are a natural extension. Modelchecking parameterized concurrent programs using linear. Software model checking asoftmc is an effective technique for analyzing behavioral properties of software systems abased on a combination of static analysis and traditional modelchecking techniques aabstraction is essential for scalability. Highlevel system model markov chain annotated with pattern instances. Modelchecking parameterized concurrent programs using linear interfaces. Welcome to the website of the international conference on verification, model checking, and abstract interpretation 2018. The main advantage of the approach is to reason regardless of the number of users of the system in which the policy is enforced.
Model checking systems there are many other successful examples of the use of model checking in hardware and protocol verification. Our more theoretical contributions relate to the problem of model checking a protocol for the wellknown memory model sequential consistency sc. Model checking sequential consistency and parameterized. Parameterized model checking of faulttolerant distributed. Parameterized model checking of ringbased message passing systems e. Modelchecking problems as a basis for parameterized. This book constitutes the thoroughly refereed proceedings of the 19th international spin workshop on model checking software, spin 2012, held in oxford, uk, in july 2012. The latter is undecidable for mtl and is decidable and expspa ce complete i. Parameterization definition of parameterization by the. Parameterized model checking of ringbased message passing systems. Challenges in model checking of faulttolerant designs in tla.
Various approaches to model checking software 6 hypothesis model checking is an algorithmic approach to analysis of finitestate systems model checking has been originally developed for analysis of hardware designs and communication protocols model checking algorithms and tools have to be tuned to be applicable to analysis of software. Jul 22, 2004 this talk will consist of two somewhat independent subtalks. Parameterized model checking is a formal verification technique for verifying that some specifications hold in systems consisting of many similar cooperating but indistinguishable processes. Both discuss research motivated by parameterized model checking of sharedmemory protocols, but they are somewhat orthogonal.
Tutorial on parameterized model checking of faulttolerant. In the paper we will also show how to model check a protocol that uses special variables storing identifiers of the participating processes i. Below are some wellknown model checkers, categorized by whether the specification is a formula or an. Software model chec king emerged as a natural evolution of applying model check. Performance verification is a common discipline in system and software engi neering.
This is a toolset for parameterized model checking of thresholdguarded faulttolerant distributed algorithms. In the first part we consider the problem of automatically verifying sequential consistency of a sharedmemory multiprocessor for an arbitrary number of addresses and data values by model checking. Parameterized verification of multithreaded software. Check the tutorial on running the tool and understanding the output. Most of probabilistic model checking techniques rely on the model, and effective algorithms are available as opensource tools, such as prism kwiatkowska et al.
His primary research interests lie in algorithmic verification of complex systems such as shared memory protocols, software, hardware, and parameterized systems. The task is to show correctness regardless of the number of components. The growing popularity of multithreading has led to a great number of software libraries that support access by multiple threads. In this way we aim at giving a tool to universally verify software systems where an unknown number of software components i. Bymc is a toolset for parameterized model checking of thresholdguarded faulttolerant distributed algorithms check our benchmarks for example. This talk will consist of two somewhat independent subtalks. Model checking software 19th international spin workshop. In addition, concurrent software is usually asynchronous, i. While this goes a long way, the missing piece is the essentially manual proof of the metatheorem for each new tm implementation.
The problem is of interest in several different areas. While the classic model checking problem is to decide whether a finite system satisfies a specification, the goal of parameterized model checking is to decide, given finite systems mn parameterized by n n, whether, for all n n, the system mn satisfies a specification. Mobile cyberphysical systems cpss are very hard to verify, because of asynchronous communication and the arbitrary number of components. Citeseerx document details isaac councill, lee giles, pradeep teregowda. In computer science, model checking or property checking is a method for checking whether a finitestate model of a system meets a given specification a.
We consider the modelchecking problem for a particular class of parameterized systems. Expression caching for runtime verification based on. Verifying distributed algorithms complete parameterized. Allen emerson and vineet kahlon department of computer sciences, the university of texas at austin, austin, tx 78712, usa. Verifying properties for such systems involves reasoning about unboundedly many processes and hence cannot be accomplished directly by model checking. The term parameterized refers to the fact that the size of the system is a parameter of the verification problem. The goal of parameterized verification is to prove the correctness of a system specification regardless of the number of its components. Abstract we consider the modelchecking problem for a particular class of parameterized systems. A formal approach to verify parameterized protocols in.
This article lists model checking tools and gives a synthetic overview their functionalities. In the first part we consider the problem of automatically verifying sequential consistency of a sharedmemory multiprocessor for an arbitrary number of addresses and data values by model. Regular model checking is a form of symbolic model checking for parameterized and infinitestate systems whose states can be represented as words of arbitrary length over a finite alphabet, in which regular sets of words are used to represent. Introduction a parameterized system is a class of software system that consists of variable number of.
To see the accompanying publications, visit the tool website. Vmcai provides a forum for researchers from the communities of verification, model checking, and abstract interpretation, facilitating interaction, crossfertilization, and advancement of hybrid methods that combine these and related areas. S parameterized model checking of fine grained concurrency. Modelchecking parameterized concurrent programs using linear interfaces ideals 2004. The ultimate specification of a protocol is the memory model. For installation instructions, check readme in the source directory. We have developed a tool called beacon that does parameterized model checking of lgfsms. In this paper, we propose a formal approach to verify the safety properties of parameterized protocols in. The dtmc model can be used when behaviors of software systems meet the markov property, that is, the probability of moving to the next state. The method starts with a template invariant map, i. Pdf parameterized modelchecking of timed systems with. A parameterized model checking in mobile access wireless.
Due to the complete integration in the operating software, the models are automatically parameterized and changes can be carried out very quickly. Verifying properties for such systems involves reasoning about unboundedly many processes and hence cannot be. Software model checking model checking modulo theories mcmt sylvain conchon lri umr 8623, universite parissud equipe toccata, inria saclay iledefrance 1 cubicle an smt based model checker for parameterized systems 2 contents i a short tutorial on cubicle i theoretical foundations i implementation details i extra materials 3. A parametric model checking approach for realtime systems design.
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