In this paper, we consider the problem of controller design using approximately bisimilar abstractions with an emphasis on safety and reachability specifications. We propose abstraction-based approaches to solve both classes of problems. We start by synthesizing a controller for an approximately bisimilar abstraction. Then, using a concretization procedure, we obtain a controller for our initia...

The aim of shape analysis is to discover precise abstractions of the reachable data structures in a program’s heap. This paper develops a shape analysis for reasoning about relational properties of data structures, such as balancedness of trees or lengths of lists. Both the concrete and the abstract domain are represented by hypergraphs. The analysis is based on user-defined indexed graph gramm...

This paper is about generating security tests from the Common Criteria expression of a security policy, in addition to functional tests previously generated by a model-based testing approach. The method that we present re-uses the functional model and the concretization layer developed for the functional testing, and relies on an additional security policy model. We discuss how to produce the s...

Specifically, the framework of methods and technology representing the VPH will have to possess three fundamental attributes: • descriptive: the framework should allow observations made in laboratories, in hospitals and in the field, at a variety of locations worldwide, to be collected, catalogued, organized, shared and combined in any suitable way • integrative: the framework should enable exp...

environments: Since the abstract counterpart for addresses are symbolic variables (or nodes) in shape graphs, an abstract environment E can simply be a function mapping program variables to nodes, that is, E ∈ E =X→V. Now, the memory abstract domainM is defined byM = E× (H ⇒ N ), and its concretization γM :M ♯ → P(E×H) can be defined as follows: γM(E ,(σ ,ν)) def = {(ν ◦E,σ) | (σ ,ν) ∈ γH(σ ) a...

In this paper, we propose model transformation based on a message sequence diagram with a class diagram, which makes it possible to give a structural & behavioral expression to generate the detailed codes. This approach can perform more specific design than the previous model transformation based on only static structure [2,3,4]. We show a case study to illustrate our model transformation for t...

An essential component of the activity law enforcement units is combating crimes in field drug trafficking. In conditions digitalization, significant attention paid to digitalization methods this field. Therefore, it necessary examine international legal experience The research methodology includes such as theoretical (identification and resolution contradictions, problem statement, hypothesis ...

The purpose of this paper is to discuss the role of law in the management of the Baltic Sea, with focus on eutrophication. It aims to identify legal instruments or structures realizing an ecosystem approach. This also includes a discussion of the prerequisites of law as contributor to ecosystem-based management (EBM), as well as evaluation of current legal instruments. While ecosystem approach ...

Objective-CP is an optimization system that views an optimization program as the combination of a model. a search, and a solver. Models in Objective-CP follow the modeling style of constraint programming and are concretized into specific solvers. Search procedures are specified in terms of high-level nondeterministic constructs, search combinators, and node selection strategies. Objective-CP su...