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A typical problem formal verification faces is the size of the model of a system being verified. Even for a small system, the state space of the model tends to grow exponentially (state explosion). In this paper, we present a new representation of state spaces suitable for implementing operations upon behavior protocols of software components [1]. The(More)
Although there exist several software model checkers that check the code against properties specified e.g. via a temporal logic and assertions, or just verifying low-level properties (like unhandled exceptions), none of them supports checking of software components against a high-level behavior specification. We present our approach to model checking of(More)
This paper is based on a real-life experience with behavior specification of a non-trivial component-based application. The experience is that model checking of such a specification yields very long error traces (providing counterexamples) in the order of magnitude of hundreds of states. Analyzing and interpreting such an error trace to localize and debug(More)
Fractal is a component model developed initially by France Telecom and INRIA and later as an open source project in the ObjectWeb consortium. The component model is defined by the Fractal Component Model specification [BCS]. The specification defines a hierarchical component model, where a component is specified in terms of its server and client (provided(More)
Legacy applications are still widely spread. If a need to change deployment or update its functionality arises, it becomes difficult to estimate the performance impact of such modifications due to absence of corresponding models. In this paper, we present an extendable integrated environment based on Eclipse developed in the scope of the Q-Impress project(More)
Assuring components compatibility plays a crucial part in developing a reliable component system. Especially, when the components come from different vendors worldwide. In order to do so, an appropriate formalism for behavior specification of components is necessary. We propose a formalism of threaded behavior protocols, which-unlike most other(More)
Behavior protocols turned out to be very suitable platform for component behavior specification if one is interested in behavioral compatibility of communicating software components. The level of abstraction provided by BP is however sometimes too high resulting in both hiding important aspects of the design and introducing artificial incompatibilities. In(More)
This chapter presents our solution to the CoCoME assignment that is based on the SOFA 2.0 (SOFtware Appliances) hierarchical component model. The solution involves (i) modeling architecture in SOFA meta-model, (ii) specification of component behavior via extended behavior protocols, (iii) checking behavior compliance of components, (iv) verification of(More)
The concept of software product lines (SPL) is a modern approach to software development simplifying construction of related variants of a product thus lowering development costs and shortening time-to-market. In SPL, software components play an important role. In this paper, we show how the original idea of component mode can be captured and further(More)