Model checking algorithm the model checking problem can be stated as follows. It still might be a bit confusing that the printed trace contains some source lines twice. We shall represent sets of states using constraints. Pricing snipeit free open source asset management software. Modelbased testing for software product lines a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy at george mason university by erika mir olimpiew master of science, virginia commonwealth university, 1997 bachelor of science, virginia commonwealth university, 1995. A state of the program p is a valuation of the variables from x. Features include management of assets, users, licenses, accessories, consumables and components, as well as twofactor authentication, ldapad syncing, and asset acceptance confirmation. The smaller and simpler the dependencies are, the better. Cofer advanced technology center, rockwell collins, cedar rapids, ia 52498 abstract the increasing popularity of modelbased development and the growing power of model checkers are making it practical to use formal verification for. Quantitative analysis of probabilistic models of software product lines with statistical model checking maurice h. Test generation using model checking university of toronto. Abstract testing in the software industry is, in general an ad hoc task. Modeling languages programming languages model checking systematic testing statespace. Page 2 july 2011 model checking model checking mc systematic statespace exploration exhaustive testing.
Software model checking via automatic test generation patrice godefroid microsoft research designs examples. Jun 14, 2012 we present snip, an efficient model checker for software product lines spls. Software product line an overview sciencedirect topics. But i think the formulas should be written manually, for example, the cnf file can be. Having followed the instructions, it all seemed to go as expected and my software in the controller has now gone from version 15126 to 16082.
Pdf model checking software product lines with snip. However, according to the best of our knowledge, there are. Model checking for software product lines with snip core. Pdf model checking for software product lines with snip. Model checking software product lines with snip springerlink. Expected behavior or desired behavior if a feature request the email to the user should show the asset model in the model section of the email that is sent upon checking out an asset. Paid hosted customers get even better support directly from snipe it engineers.
Model checking software bim collaboration software. Model checking systems there are many other successful examples of the use of model checking in hardware and protocol verification. However if parts of the product line form an individual product line itself, multiple feature models are almost. Snipe it is and always will be free, but we also know that the only thing it departments have less of than money is time. Model checking of software how to apply model checking to analyze software. In this paper, we consider model checking partial software product line designs, i. In section 2, we give a short introduction to software product lines using a running example and we present an overview on important software analysis that have been applied to soft. There are some languages which describe the constraints in feature model. The fact that industry intel, ibm, motorola is starting to use model checking is encouraging. In each case, such features can be compiled down to the \simple model. Test generation using model checking hung tran 931470260 prof marsha chechik.
Variability in software prod uct lines is generally expressed in terms of features, and the number of potential products is exponential in the number of features. We present glass box model checking, a type of software model checking that can achieve a high degree of state space reduction in the presence of complex data. Fsm state space can itself be the product of smaller fsms model checking is usually linear in the size of the state space, but the size of the state space is usually exponential or worse in the system description program. The role of feature modeling in software product line. Expected behavior or desired behavior if a feature request ability to add a manufacturer actual behavior can not figure out how to add a manufacturer please confirm you have done the following before posting your bug report. Software product line engineering software product line spl fil f dt tfamily of products systems parnas, w i seiweiss, sei software product line engineering software engineering for a family of productssoftware engineering for a family of products software variability keyyp p g g problem in software product line. 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. We do not offer email support for free selfhosted users, however our community support on github is very responsive. Model based testing for software product lines a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy at george mason university by erika mir olimpiew master of science, virginia commonwealth university, 1997 bachelor of science, virginia commonwealth university, 1995.
Ignoring the details of its choice generation mechanism, this is caused by jpf executing bytecode instructions, not source lines, and a single source line can easily get translated into a number of bytecode. Model checking background undergraduate cs classes contributing to this area software engineering ok counter examples or system modeling requirement properties. Software product line engineering with feature models. Expected behavior or desired behavior if a feature request when checking out a component to an asset, i would expect to be able to later checkin that component if things change. Model checking is a powerful approach for the formal verification of software. Programming languages logic algorithms embedded systems os system programming cyber physical system.
The case studies conclude that model checking can be effectively used to discover errors early in the development life cycle, for many classes of models. Show a list of modeling problems choose evaluate check model. Model checking model checking systematic statespace exploration exhaustive testing. Analysis strategies for software product lines 3 we refer the reader to a recent survey benavides et al. Simulationbased abstractions for software productline. Oct 04, 2009 section 8, liveness and termination, briefly offers some hints for working in this area.
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. Snipeit is a free, open source it asset management system that helps you manage assets, software licenses, accessories, components and consumables within your organization. Integrated modeling of software product lines with feature. Software product line engineering combines the individual developments of systems to the development of a family of systems consisting of common and variable assets. More recently, software model checking has been in. Whereas classical model checkers are only capable of checking properties against each individual product in the product line. Choose whether to check only surfaces, only curves or both. Typically, one has hardware or software systems in mind, whereas the specification contains safety requirements such as. However, before we introduce the example, we will take a small detour into the basis of sple. Since model checking examines every possible combination of input and state, it is also far more effective at finding design errors than testing, which can only check a small fraction of the possible inputs and states.
The remainder of this survey is structured as follows. Systematic software testing state space product of os processes dynamic semantics systematically drive the system along all its state space paths. Section 8, liveness and termination, briefly offers some hints for working in this area. Slam microsoft bandera kansas state magic, satabs cmu. Aug 23, 2016 the snipe 2 uses what they call a type c controller and the steps for upgrading this model are almost at the end of the document. Model checking has been around for more than 20 years now, and has migrated from the purely research to the industrial arena. Snipe it is a free, open source it asset management system. The time spent model checking is recovered several times over by avoiding rework during unit and integration testing. International software product line conference colocated workshops. Software product lines however, before we introduce the example, well take a small detour into the basis of sple. How to use the check model tool to identify possible problems with your model that can affect data transfer to other software packages. Model checking check whether the system satisfies a temporallogic formula. What is your experience with software model checking.
We offer affordable hosting packages where we take care of the server setup, the installation, all of the maintenance and upgrades, plus you get priority support for any issues that might come up. Whereas classical model checkers are only capable of checking properties against each individual product in the product. Jun 10, 2012 we used the java path finder model checker to verify some security deadlock, race condition and temporal properties using linear temporal logic to specify them. Section 2 describes the basic algorithm for temporal logic model checking, as well as some of the breakthroughs in. Snipeit was made for it asset management, to enable it departments to track who has which laptop, when it was purchased, which software licenses and accessories are available, and so on. However, for an spl with nfeatures, up to 2 n executions of. In spls, feature models fms are frequently used to model commonalities and variabilities. Model checking partial software product line designs. 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. The snipe 2 uses what they call a type c controller and the steps for upgrading this model are almost at the end of the document. Model checking of software patrice godefroid bell laboratories, lucent technologies. The main difference fromnormal, oneofakind software development is a logical separationbetween the development of core, reusable software assets the platform,and actual applications.
It is our premise that the fraction of mistakes intercepted can be increased, specifically for distributed systems designs, if we complement traditional testing techniques with software model checking techniques. Snipe2 software upgrade motorhomefun the motorhome. I try to explain here in a nontechnical manner what is model checking. There are guidelines to follow but in most cases do not cover sufficient portions of the software product. Since 2011, the model checking contest mcc compare performances of model checking tools designed to analyze highly concurrent systems. Support snipeit free open source it asset management. Software product lines spls, or software product line development, refers to software engineering methods, tools and techniques for creating a collection of similar software systems from a shared set of software assets using a common means of production. Software model checking 3 channels that are used for message passing, etc. This project is actively developed and we release quite frequently.
Section 9 relates model checking to software testing and type systems, and section 10 presents a general conclusion. Whereas classical model checkers are only capable of checking properties against each individual product. Installation should take around twenty minutes or less, if nothing goes wrong, and if youre pretty familiar with web server configuration. 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. Statespace exploration is fundamentally hard np, pspace or worse. The carnegie mellon software engineering institute defines a software product line as. I recommend it to software testing researchers, practitioners, and managers. We are interested in the question of whether or not model checking techniques can be applied to large software specifications. For many product line applications, one feature model is a good choice. The paper presents a good overview of the state of the art in software model checking. It supports classical assertions like notnull on java bytecode it is for program model checking. Show model checking can be included in an iterative development cycle. Check out the snipeit website for a demo, a comprehensive list of features, screenshots.
Software model checking guillaume brat, dimitra giannakopoulou, klaus havelund, mike lowry, phil oh, corina pasareanu. Product features snipeit free open source it asset. Specifically, we provide a data point by reporting on a positive experience in model checking a. Variability in software product lines is generally expressed in terms of features, and the number of potential. Software product line feature model stack overflow. Combine static analysis and model checking use static analysis to extract a model k from a boolean abstraction of the program. We have an incredible community, but sometimes you need a little more. Below are some wellknown model checkers, categorized by whether the specification is a formula or an. Free selfhosted users get great support via github and gitter. We present snip, an efficient model checker for software product lines spls.
In computer science, model checking, or property checking, is, for a given finitestate model of a system, exhaustively and automatically checking whether this model meets a given specification a. First, i must positively express gratitude for the great system that snipe it is. Symbolic model checking has been highly successful when applied to hardware systems. Snipeit is and always will be free, but we also know that the only thing it departments have less of than money is time. Whereas classical model checkers are only capable of checking properties against each individual product in the product line, snip exploits specifically designed algorithms to check all products in a single step. Per runeson, emelie engstrom, in advances in computers, 2012. The other two deal with the operational flight program of an unmanned aerial vehicle. Support snipe it free open source it asset management. Software product line engineering is an approach to costefficiently derive tailored products to markets and customers, utilizing common components and services in a planned manner. Quantitative analysis of probabilistic models of software. Modeling and model checking software product lines. I can appreciate the amount of effort that went into and continues to go into developing of such a system. Abstractsoftware product lines spls are an approach to improve reusability of software in a large number of products that share a common set of features. Product lines have been applied to other engineering fields for decades, while being quite recently introduced in software engineering.
Here, the author provides a well written and basic introduction to the new technique. Suppose we would like to check that the search tree is always ordered. Then check that f is true in k k f, where f is the specification of the program. Read model checking software product lines with snip, international journal on software tools for technology transfer on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Software model checking via automatic test generation. If this all looks too overwhelming for you, we do offer affordable hosted solutions for folks who want to use snipe it but dont know how to run a web server, or dont have time to keep up with updates. Model checking has had a big impact on formal veri. Nowadays, it is widely accepted that its application will enhance and complement existing validation techniques as simulation and test. Variability in software product lines is generally expressed in terms of features, and the number of potential products is exponential in the number of features. We find the software perfect for use with managing serialized assets.