We use a recursive definition of the traversal algorithm because it allows us to describe the key aspects in a simple and clear way. Drawing from research traditions in mathematical logic, programming languages, hardware design, and theoretical computer science, model checking is now widely used for. 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. Using this bounded technique, we can detect bugs that invalidate safety properties.
We present an analysis of a real concurrent system by the zing model checker which demonstrates that the ability to model check with arbitrary but fixed context. Cseq 8 is a model checker for concurrent c programs that reduces a concurrent program to a sequential one and applies model checkers for sequential programs such as cbmc 15, 20. We present the new technique of dynamic path reduction dpr, which allows one to prune redundant. Jun 09, 2015 parlato, gennaro 2015 on sequentializing concurrent programs bounded model checking. Proceedings of the 7th international conference on tools and algorithms for the construction and analysis of systems boolean and cartesian abstraction for model checking c programs. Boom is a model checker for concurrent boolean programs. Jan 21, 2020 concuerror is a stateless model checking tool for erlang programs. Verifying concurrent listmanipulating programs by ltl model. Fortunately, the successes of model checking on finite state systems and sequential programs have provided a wealth of useful abstractions and techniques to bridge this gap. A dynamic concurrent boolean program is allowed to use two new operators. A model checker for concurrent software microsoft research. If model checking can be executed via command line, then it can be executed by other programs. Proceedings of the 7th international conference on tools and algorithms for the construction and analysis of systems boolean and cartesian abstraction for.
This is typically associated with hardware or software systems, where the specification contains liveness requirements such as avoidance of livelock as well as safety requirements such as avoidance of states representing. We consider the verification of parameterized boolean programs abstractions of sharedmemory concurrent programs with an unbounded number of threads. Boolean and cartesian abstraction for model checking c. The zing project is an effort to build a flexible infrastructure to represent and model check abstractions of large concurrent software.
Verification, model checking, and abstract interpretation. Dynamic model checking is not reliable without an adequate test set, while naive test generation of concurrent programs is insufficient, due to the possibility of many interleavings. For concurrent probabilistic programs having processlevel nondeterminism, it is often necessary to restrict the class of schedulers that resolve nondeterminism to obtain sound and precise model checking algorithms. Unfortunately, the state space explosion is the main bottleneck in model checking tools. Simple yet effective technique for finding bugs in highlevel hardware and software. Model checking of concurrent programs with static analysis. Bounded model checking of concurrent programs springerlink. In the last part of the chapter, we will describe verification techniques for concurrent programs that are inspired by these models. International workshop on verification, model checking, and abstract interpretation. The usability of this approach is demonstrated by establishing correctness properties of a producerconsumer system and of a concurrent garbage collector. Ltl model checking the complexity of propositional linear temporal logics sistla, clarke, 85 checking that finite state concurrent programs satisfy their linear specification, lichtenstein, pnueli, popl85 an automatatheoretic approach to automatic program verification vardi, wolper, 86 ltl to buchi automata 34.
Boolean and cartesian abstraction for model checking c programs. Pdf concurrent bounded model checking researchgate. Model checking for concurrent software architectures. Parlato, gennaro 2015 on sequentializing concurrent programs bounded model checking. Integrating model checking and test generation for reliable. In addition to these, modelchecking has proven to be a powerful and versatile approach for the task. Cbmc a c program containing assertions is translated into a formula in static. Our work is based on cbmc, which models sequential c programs in which the number of executions for each loop and the depth of recursion are bounded. Fortunately, the successes of modelchecking on finite state systems and sequential programs have provided a wealth of useful abstractions and techniques to bridge this gap. Automated compositional abstraction refinement for concurrent c programs. The interaction among concurrently executing threads of a concurrent program results in insidious programming errors that are difficult to reproduce and fix.
This work strives to make formal verification of posix multithreaded programs easily accessible to general programmers. We add a conjunct that describes the concurrent executions of these threads as partial orders. Genmc is a stateless model checker for c programs that works on the level of llvm intermediate representation. A supporting tool, named msv, has been developed for the purpose of modeling, simulation and veri. Exploiting program structure for model checking concurrent. For concurrent programs, we do so for each thread of the program. A model checker for concurrent software researchgate. In this paper we focus on the partial order reduction technique used in java pathfinder jpf. Fndload commands to download different seed data types. The purpose is to establish a framework for verification and debugging of java programs based on model checking. Therefore, analysis techniques that can automatically detect errors in concurrent programs can be invaluable.
Welcome to the website of the 21st international conference on verification, model checking, and abstract interpretation vmcai 2020. This article lists model checking tools and gives a synthetic overview their functionalities. However, they can, and should, exploit insights and results of pdsbased model checking. The zing project is an effort to build a flexible and scalable model checking infrastructure for concurrent software. Contextbounded model checking of concurrent software 95 gram with a. The proposed method combines the power of dynamic model checking with test generation via program mutation. Contextbounded model checking of concurrent software citeseerx.
Refinement of structural heuristics for model checking of concurrent programs through data mining. Verismart is a novel parallel bugfinding framework for concurrent c programs. Stateless model checking concurrent programs with maximal. Moreover, we look into the designs of a linuxlike realtime kernelpikort and the specification of armv7m architecture to reconstruct the model, and use ltl to specify a simple concurrent programs consumerproducer problem during the development stage of the kernel. Modelchecking parameterized concurrent programs using. These include races and deadlocks, the detection for which is crucial for concurrent programs. Towards a framework for scalable model checking of. We propose a satbased bounded verification technique, called tcbmc, for threaded c programs. This talk will be a description of our initial efforts to check java programs using a model checker. Hard to make reproducible for concurrent distributed programs this is a reason for this course model checking. Contribute to mpiswsgenmc development by creating an account on github. In this talk, i will describe our recent advances in concurrent dataflow analysis, symbolic model checking with partial order reduction, and dynamic techniques for verifying concurrent programs. Refinement of structural heuristics for model checking of. The paper presents a novel framework for scalable model checking of concurrent c programs.
Integrating model checking and test generation for. Model checking is an effective technique for uncovering subtle errors in concurrent systems. A twolevel approach, 2nd workshop on software model checking softmc 2003, entcs 893, boulder, colorado, july 2003, sagar chaki, joel ouaknine, karen yorav, edmund clarke, ps ps. For sequential programs, procedure summarization is wellunderstood and used routinely in a variety of compiler optimizations and software defectdetection tools. Furthermore, it is able to model concurrent systems and verify properties of concurrent sys tems speci. Concuerror is a stateless model checking tool for erlang programs. The novelty of our approach is in bounding the number of context switches allowed among threads.
Model checking of concurrent programs is especially interesting, because they are notoriously difficult to test, analyze, and debug by other methods. Model checking of concurrent programs with static analysis of. In the example, each worker thread has distinct code though this is not a requirement for our approach. Contextbounded model checking of concurrent software. In the model checking literature, parameterized programs have been heavily investigated see section of related work, as they are a natural extension of concurrent systems, and a very relevant model for communication protocols and distributed systems. The following query will give you the list of concurrent programs that run today with the statusesname of the concurrent programrequest idlogoutfilenames and the. On sequentializing concurrent programs bounded model. Mar 03, 2020 generic model checker for concurrent c programs.
We then consider the main problem of this paper, contextbounded model checking of dynamic concurrent boolean programs. We describe partial order reduction, some other important concepts, and especially the proposed techniques in the context of model checking of multithreaded java programs with jpf. Mcr systematically explores the statespace of concurrent programs with a provably minimal number of executions. Thus, we obtain an efficient modeling that can be sent to a sat solver for property checking. Upmarc summer school on multicore computing 2015, sweden. A tool jcbmc, a concurrent bounded model checker for java. We also suggest a novel technique for modeling mutexes and pthread conditions in concurrent programs. With the idea of verification reuse, it shows an integrated approach to efficient reduction of state space by abstraction, symbolic representation and dynamic partialorder reduction dpor techniques. In this paper, we introduce two classes of schedulers called view consistent and locally markovian.
A method for testing concurrent programs is introduced. This paper describes a translator called java pathfinder from java to promela, the programming language of the spin model checker. Model checking is a technique for finding bugs in systems by systematically exploring their state spaces. Sat and smtbased bmc builds a formula that describes the data and control ow of a program. Our predicate abstractionbased tool ddv fq is an ltl formula. Citeseerx document details isaac councill, lee giles, pradeep teregowda. We propose that such programs can be modelchecked by iteratively considering the program under kround schedules, for increasing values of k, using a novel compositional construct called linear interfaces that summarize the effect of a block. Here we propose a state space reduction technique for model checking concurrent programs written in c. Model checking is used to explore di erent symbolic program executions, to systematically handle aliasing in the input data structures, and to analyze the. Modeling languages programming languages model checking systematic testing verisoft. It traces its roots to logic and theorem proving, both to.
In our approach, we translate a program into a formula in a disjunctive form. To the best of our knowledge, jmpax is the first tool of its kind. Cseq reduces the verification of a concurrent program written in c to a sequential one by bounding the number of contextswitches, and then does bounded model checking on the sequential c. The s lam toolkit demonstrates that predicate abstraction enables automated verification of real world windows device drivers. In the last part of the chapter, we will describe verification techniques. Modelchecking parameterized concurrent programs using linear interfaces. Moreover, we look into the designs of a linuxlike realtime kernelpikort and the specification of armv7m architecture to reconstruct the model, and use ltl to specify a simple concurrent programsconsumerproducer problem during the development stage of the kernel. After the success of propositional satisfiability in solving the planning problem in artificial intelligence see satplan in 1996, the same approach was generalized to model checking for the linear temporal logic ltl the planning problem corresponds to model checking for safety properties.
Empirical studies of concurrent programs show that this position is overly conservative. Drawing from research traditions in mathematical logic, programming languages, hardware design, and theoretical computer science, model checking is now widely used for the verification of hardware and software in industry. Modelchecking parameterized concurrent programs using linear. Concurrent program query to find status of requests. State space reduction strategies for model checking. Partial orders for e cient bounded model checking of.
Opensolver an open source solvercompatible optimization engine for microsoft excel on windows and mac using th. Concurrent programs usually have logs associated them that provide details of the concurrent program data. We wish to extract sound models from concurrent programs automatically and check the behaviors of these models systematically. May 19, 2018 fortunately, the successes of model checking on finite state systems and sequential programs have provided a wealth of useful abstractions and techniques to bridge this gap.
Model checking for concurrent software architectures dimitra giannakopoulou a thesis submitted in partial fulfilment of the requirements for the degree of doctor of philosophy in the faculty of engineering of the university of london, and for the diploma of the imperial college of science, technology and medicine january 1999. Jul 19, 2010 we consider the verification of parameterized boolean programs abstractions of sharedmemory concurrent programs with an unbounded number of threads. Model checking of concurrent programs with static analysis of field. This design enables concurrent veri cation, with a main thread running symbolic execution, without any constraint solving, to build subformulas, and a set of worker threads running a decision procedure for satis ability checks. 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. When to schedule oracle applications concurrent programs you can set up and start using oracle applications concurrent programs at any time in your implementation.
Note, however, that model checking tools such as jpf actually implement the depthfirst traversal using an iterative approach with an explicit stack. However, they can, and should, exploit insights and results of pdsbased modelchecking. Read abstract interpretation and model checking for checking secure information flow in concurrent systems, fundamenta informaticae on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Bounded model checking of concurrent programs core. On sequentializing concurrent programs bounded model checking parlato, gennaro 2015 on sequentializing concurrent programs. Model checking is a computerassisted method for the analysis of dynamical systems that can be modeled by statetransition systems. This tool is called java multipathexplorer jmpax, and available for download on the web. This paper presents a new static analysis technique based on model checking for detecting safety errors in concurrent programs. Sthread is invivo in that it provides a dropin replacement for the pthread library, and operates directly on the compiled target executable and application. Summarization of procedures pathwise and universal summaries sequential mode only structural abstraction of procedures sequential mode only fixpoint detection using qbf kinduction. In fact, one area where we believe it can have an immediate impact. The model checking problem can be summarized as such. You can update your models and test them automatically the same way you might do.
708 555 257 83 699 490 1111 518 717 612 1402 829 49 784 544 703 174 789 904 1089 1298 167 116 1137 977 128 1477 375 759 33 449 1432 59 1065 1096 1064 373 570 756 427 1084 758 532 897 208 427 1042 1230 65