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Contracts for System Design

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TLDR
This paper intends to provide treatment where contracts are precisely defined and characterized so that they can be used in design methodologies such as the ones mentioned above with no ambiguity, and provides an important link between interfaces and contracts to show similarities and correspondences.
Abstract
Recently, contract-based design has been proposed as an “orthogonal” approach that complements system design methodologies proposed so far to cope with the complexity of system design. Contract-based design provides a rigorous scaffolding for verification, analysis, abstraction/refinement, and even synthesis. A number of results have been obtained in this domain but a unified treatment of the topic that can help put contract-based design in perspective was missing. This monograph intends to provide such a treatment where contracts are precisely defined and characterized so that they can be used in design methodologies with no ambiguity. In particular, this monograph identifies the essence of complex system design using contracts through a mathematical “meta-theory”, where all the properties of the methodology are derived from a very abstract and generic notion of contract. We show that the meta-theory provides deep and illuminating links with existing contract and interface theories, as well as guidelines for designing new theories. Our study encompasses contracts for both software and systems, with emphasis on the latter. We illustrate the use of contracts with two examples: requirement engineering for a parking garage management, and the development of contracts for timing and scheduling in the context of the AUTOSAR methodology in use in the automotive sector.

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Model Driven Engineering

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Alternating-time temporal logic

TL;DR: The alternating-time temporal logic (ATL) as discussed by the authors is a more general variant of temporal logic that allows selective quantification over those paths that are possible outcomes of games, such as the game in which the system and the environment alternate moves.
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A Contract-Based Methodology for Aircraft Electric Power System Design

TL;DR: A platform-based methodology is proposed, which enables independent implementation of system topology and control protocol by using a compositional approach and is shown to be effective on a proof-of-concept electric power system design.
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A Platform-Based Design Methodology With Contracts and Related Tools for the Design of Cyber-Physical Systems

TL;DR: A platform-based design methodology that uses contracts to specify and abstract the components of a cyber-physical system (CPS), and provide formal support to the entire CPS design flow is introduced.
Proceedings ArticleDOI

OCRA: a tool for checking the refinement of temporal contracts

TL;DR: OCRA (Othello Contracts Refinement Analysis) is a new tool that provides means for checking the refinement of contracts specified in a linear-time temporal logic, and allows to express discrete as well as metric real-time constraints.
References
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Model checking

TL;DR: Model checking tools, created by both academic and industrial teams, have resulted in an entirely novel approach to verification and test case generation that often enables engineers in the electronics industry to design complex systems with considerable assurance regarding the correctness of their initial designs.
Journal ArticleDOI

Statecharts: A visual formalism for complex systems

TL;DR: It is intended to demonstrate here that statecharts counter many of the objections raised against conventional state diagrams, and thus appear to render specification by diagrams an attractive and plausible approach.
Journal ArticleDOI

A theory of timed automata

TL;DR: Alur et al. as discussed by the authors proposed timed automata to model the behavior of real-time systems over time, and showed that the universality problem and the language inclusion problem are solvable only for the deterministic automata: both problems are undecidable (II i-hard) in the non-deterministic case and PSPACE-complete in deterministic case.
Proceedings ArticleDOI

Abstract interpretation: a unified lattice model for static analysis of programs by construction or approximation of fixpoints

TL;DR: In this paper, the abstract interpretation of programs is used to describe computations in another universe of abstract objects, so that the results of abstract execution give some information on the actual computations.
Book

Principles of Model Checking

TL;DR: Principles of Model Checking offers a comprehensive introduction to model checking that is not only a text suitable for classroom use but also a valuable reference for researchers and practitioners in the field.
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