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Recently, many formal methods, such as the SCR (Software Cost Reduction) requirements method, have been proposed for improving the quality of software specifications. Although improved specifications are valuable, the ultimate objective of software development is to produce software that satisfies its requirements. To evaluate the correctness of a software(More)
We present a novel fault-based approach for testing feature models (FMs). We identify several fault classes that represent possible mistakes one can make during feature modeling. We introduce the concept of distinguishing configuration, i.e., a configuration that is able to detect a given fault. Starting from this definition, we devise a technique, based on(More)
The increasing diusion and importance of Web Applications has led to strict requirements in terms of continuity of the service, because their unavailability can lead to severe economic losses. Techniques to assure the quality of these applications are thus needed in order to identify in advance possible faults. Model-driven approaches to the testing of Web(More)
We advocate the need for automated support to System Requirement Analysis in the development of time- and safety-critical computer-based systems. To this end we pursue an approach based on deductive analysis: high-level, real-world entities and notions, such as events, states, finite variability, cause-effect relations, are modeled through the temporal(More)
This paper reports our experience in exploiting the metamodelling approach of model-driven language engineering to define a standard modelling language for the Abstract State Machines (ASMs) formal method, and develop a general framework (ASMETA) for a wide interoperability of ASM tools in a model-driven development context. We describe the requirements to(More)
Under certain constraints the test case generation problem can be represented as a model checking problem, thus enabling the use of powerful model checking tools to perform the test case generation automatically. There are, however, several different model checking techniques, and to date there is little evidence and comparison on which of these techniques(More)
Model-based testing techniques often select test cases according to test goals such as coverage criteria or mutation adequacy. Complex criteria and large models lead to large test suites, and a test case created for one coverage item usually covers several other items as well. This can be problematic if testing is expensive and resources are limited.(More)
In the modelization of time-dependent systems it is often useful to use the abstraction of zero-time transitions, i.e., changes of system state that occur in a time that can be neglected with respect to the whole dynamics of system evolution. Such an abstraction, however, sometimes generates critical situations in the formal system analysis. This may lead(More)
Test case generation can be represented as a model checking problem, such that model checking tools automatically generate test cases. This has previously been applied to testing techniques such as coverage criteria, combinato-rial testing, mutation testing, or requirements testing, and further criteria can be used similarly. However, little comparison(More)
The paper presents an Abstract State Machine (ASM) specification of the Landing Gear System case study, and shows how the ASMETA framework can be used to support the modeling and analysis (validation and verification) activities for developing a rigorous and correct model in terms of ASMs. We exploit the two fundamental concepts of the ASM method, i.e., the(More)