Goanna static analysis tool at sate software assurance. We highlight how model checking and static analysis can be used on a large scale. Using model check ing to conduct static analysis allows a straightforward specification of desired program properties in computation tree logic ctl 2. The commercial version of goanna is currently deployed in a wide range of. This abstraction includes the control ow graph cfg of a program and labels atomic propositions consisting of syntactic occurrences of interest. Goanna is based on formal software analysis techniques such as model checking, static analysis and smt solving. It is provided either as a command line tool goanna central or as an integration into eclipse or visual studio called goanna studio. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The finitestate assumption is not unrealistic for hardware. Unlike existing approaches goanna uses the offtheshelf nusmv model checker as its core analysis. Smtbased false positive elimination in static program analysis. Syntax testing needs driver program to be built that automatically sequences through a set of test cases usually stored as data.
Example program and labeled cfg for useafterfree check. Download scientific diagram example program and labeled cfg for useafter free check. Use model checking for static analysis of real code. 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. Working on the intersection of software model checking and automated static bug. Search within a range of numbers put between two numbers. The fact that industry intel, ibm, motorola is starting to use model checking is encouraging.
Nowadays, it is widely accepted that its application will enhance and complement existing validation techniques as simulation and test. Moreover, these models generate words either from the syntactic or thematic context. Unlike existing approaches goanna uses the otheshelf nusmv model checker as its core analysis engine on a syntactic. Using smt solvers for falsepositive elimination in static. Goanna static analysis at the nist static analysis tool exposition. We believe that goanna provides some realistic middle ground to address deep software issues in a practical manner. For each kind of transition, the source and target locations i.
Adds syntactic information as labels in kripke structure translates static analysis problems to ctl uses model checking to analyse resulting model advantage. The chosen abstractions are, thus, pushdown models or. Syntactic model checking uses a very coarse abstraction. Model checking systems there are many other successful examples of the use of model checking in hardware and protocol verification. The papers are organized in topical sections on model checking, software verification, decision procedures, lineartime analysis, tool demonstration papers, timed and stochastic systems, theory, and short papers. In the subsequent section 3 we present our novel framework of a staged analysis to detect tainted data and its potentially malicious use. Goanna and discuss a number of reallife experiments on larger c code projects. The remainder of this paper is organized as follows.
At the same time it is also different from traditional software model checking tools by sacrificing some of the latters semantic depth and focusing on more generic bug detecting capabilities. Model checking problem given a kripke structure m s,r,l that represents a finitestate transition graph and a temporal logic formula f find all states in s that satisfy f. The document includes the rationale behind the language of choice and it also includes the state of the art. Goanna uses the offtheshelf model checker nusmv as its core analysis engine on a. Automated technology for verification and analysis. Rules of syntax specify how language elements are sequenced to form valid statements. Goanna is based on model checking techniques and performs an automated semantics code analysis for detecting quality as well as security software bugs. Thus, syntactic checking verifies that keywords, object names, operators, delimiters, and so on are placed correctly in your sql statement. Syntactic software model checking ansgar fehnker, j org brauer, ralf huuck, and sean seefried national ict australia ltd. Automated technology for verification and analysis atva. This means we can check for full ctl including syntactic liveness properties. Red lizard software wikimili, the free encyclopedia.
Download scientific diagram example program and labeled cfg for useafterfree check. The ctl model checking problem is encoded in two steps and we illustrate this by a simple example. Goanna works primarily on a syntactic program abstraction, i. We explain the underlying algorithms, the transformation steps from data ow results to a model. Refining the control structure of loops using static analysis. Runtime verification of microcontroller binary code. Unlike static program analysis, traditional software model checking has. This papers approach uses syntactic pattern recognition in attempting to improve disambiguation. By ansgar fehnker, jorg brauer, ralf huuck and sean seefried. Such a proof is often given as a counterexample, i.
Principles of model checking christel baier and joostpieter katoen principles of model checking baier and katoen computer science our growing dependence on increasingly complex computer and software systems necessitates the development of formalisms, techniques, and tools for assessing functional properties of these systems. The system in our case is some program and a counter example a trace through the program. We outline its architecture and show how syntactic properties can be expressed in ctl. In particular, we summarize our earlier approach on syntactic software model checking.
We shall exploit this translation to provide our examples in a clike syntax for. Interprocedural pointer analysis in goanna sciencedirect. However, we anticipate to improve on this by incorporating more semanticbased software model checking techniques such as predicate abstraction 6. Goanna is based on formal software analysis techniques such as model checking. This leads to ambiguous situations in which it is not clear which word to use. Locked bag 6016 university of new south wales sydney nsw 1466, australia abstract. Merging static analysis and model checking for improved security vulnerability detection xiii. Goanna uses standard symbolic ctl model checking as implemented in the nusmv 6 tool on a highlevel program abstraction. We may now perform static analysis by formulating the properties of interest as formulas in temporal logic.
A domain for analyzing the distribution of numerical values. Model checking driven static analysis for the real world. Enter a phrase, or a text, and you will have a complete analysis of the syntactic relations established between the pairs of words that compose it. The weaknesses in widening and narrowing can be remedied, in part, through the use of disjunctive domains 2 or techniques for re. In this context a bug is a violation of a syntactic model checking formula resulting in a counter example. Once the properties have been defined the tool analyses source code automatically and efficiently. In the syntactic topic model, words are constrained to be consistent with both. We outline its architecture and show how syntactic properties can be ex pressed. Model checking removes invalid paths in a second step. Below are some wellknown model checkers, categorized by whether the specification is a formula or an automaton. I try to explain here in a nontechnical manner what is model checking.
Runtime verification bridges the gap between formal verification and testing by providing techniques and tools that connect executions of a software to. An abstract specification language for static program. The approach that software model checking takes 10 is that of data abstraction. We symbolically evaluate the feasibility of such a counter example on. We outline its architecture and show how syntactic properties. Smtbased false positive elimination in static program. Map the syntactical structure of a program to a finite state model. It uses the nusmv model checker as the underlying veri. Software model checking is the algorithmic analysis of programs to prove prop. We try to demonstrate how jpf execution differs from using a normal jvm, and in doing so. The ctlbased model checking approach enables a high degree of flexibility in writing checks, scales to large number of checks, and can scale to large code bases. The complexity of designs is increasing very rapidly system on a chip.
Part of the library and information science commons recommended citation qin, j. Merging static analysis and model checking for improved. For example, the following embedded sql statements contain syntax errors. Unlike existing approaches goanna uses the offtheshelf nusmv model checker as its core analysis engine on a syntactic flowsensitive program abstraction. Model checking has been around for more than 20 years now, and has migrated from the purely research to the industrial arena. This is not intended to be a theoretical introduction into model checking, for which there is plenty of literature available. Software model checking typically operates on the semantic level of a program. Model checking 8, 25 and static analysis 21, 23 are automatedtechniquespromisingto ensure limitedcorrectness or to. Hardware verification is an important application of model checking and related techniques. While goanna is fast, it is not yet more precise than traditional static analysis. Search for wildcards or unknown words put a in your word or phrase where you want to leave a placeholder.