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Lightweight Machine to Machine (LwM2M) is an open industry standard built to provide a means to remotely perform service enablement and application management for the Internet of Things (IoT). It is a communication protocol used between a client software ...

INSPEX is an INtegrated Smart sPatial EXploration system. It relies on a family of sensors, like automated vehicles do, to provide enough information to a digital system for it to make reliable inferences about the location of obstacles and other ...

The INSPEX Project, to design and integrate a number of sensors to create a minaturised obstacle location device, was of sufficient complexity to merit the use of formal methods. These were deployed in data pathway verification, and in power management ...

The transition from a requirements document to a formal specification in Event-B is usually manual and ad-hoc. In order to bridge this gap, we propose a method based on Behavior-Driven Development, an agile approach, and that uses a structured natural ...

We present a translation from Event-B machines to JML-specified Java class implementations and the EventB2Java Rodin plug-in that automates the translation. Producing JML specifications in addition to Java implementations enables users to write bespoke ...

Verifying Web service composition in a dynamic environment remains one of the most difficult tasks despite the efforts and the previous proposed research works because new services can be composed during the execution step and others can automatically ...

Assurance of high integrity systems based on closed systems is a challenge that becomes difficult to overcome when a classical testing approach is used; in particular the evidence generated from a classical testing approach may not meet the objectives ...

Safety cases are adopted in the certification process of many safety-critical systems. They justify why a system is safe and whether the design adequately incorporates safety requirements defined in a system requirement specification. The use of formal ...

Multi-robotic systems are typical examples of complex multi-agent systems. The robots --- autonomic agents --- cooperate with each other in order to achieve the system goals. While designing multi-robotic systems, we should ensure that these goals ...

Event-B is a formal method that allows flexible modelling and refinement of systems. However, it is hard to convince developers to adopt it because they are not used to mathematical models and it doesn't provide any practical refinement method. On the ...

This paper presents a translation of Rodin proof-obligations into the input language of Dafny, and the implementation of the translation as the EventB2Dafny Rodin plug-in. Rodin is a platform that provides support for Event-B. The paper uses a ...

Service Component Architecture specification (SCA) is an emerging and promising technology for the development, deployment and integration of Internet applications. This technology supports the management of dynamic availability and treats the ...

Consensus problems arise in any area of computing where distributed processes must come to a joint decision. Although solutions to consensus problems have similar aims, they vary according to the processor faults and network properties that must be ...

Event-B is a formal method which is widely used in modelling safety critical systems. So far, the main properties of interest in Event-B are safety related. Even though some liveness properties, e,g, termination, are already within the scope of Event-B, ...

This paper presents a translation tool that automatically generates efficient target programming language code (C, C++, Java and C#) from Event-B formal specification related to the analysis of complex problems. This tool is a collection of plug-ins, ...

An insulin infusion pump (IIP) is a complicated and time critical control system. Making sure that the pump infuses insulin in conformance with a user's wishes and in conformance with safety related constraints, and does so at the right times, makes it a ...

This paper proposes an approach connecting an automated control system, developed using formal methods, with an emulation of an environment where it is intended to operate. The motivation is to improve formal methods teaching by providing virtual ...

In Event-B a system is developed using refinement. The language is based on a relatively small core; in particular there is only a very small number of substitutions. This results in much simpler proof obligations, that can be handled by automatic ...

The construction of specifications is often a combination of smaller sub-components. <em>Composition</em> and <em>decomposition</em> are techniques supporting reuse and allowing formal combination of sub-components through refinement steps. Sub-...

The transition from the requirements phase to the formal specification phase is one of the most painful steps in software development. Up to now, no well-defined process to build initial formal models has been proposed. We have proposed a method in ...

Event-B provides us with a powerful framework for correct-by-construction system development. However, while developing dependable systems we should not only guarantee their functional correctness but also quantitatively assess their dependability ...