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System to Software Integrity: A Case Study

Bordin, Matteo and Comar, Cyrille and Falis, Ed and Gasperoni, Franco and Moy, Yannick and Richa, Elie and Hugues, Jérôme System to Software Integrity: A Case Study. (2014) In: Embedded Real-Time Software and Systems 2014, 5 February 2014 - 7 February 2014 (France).

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Abstract

It is widely acknowledged that the main source of cost for developing high-integrity software systems is their verification. A significant portion of this verification cost is spent assessing that software complies with its requirements. Over the years several different methods have been developed to address this issue, in particular: testing, peer reviews, formal verification and automatic code generation. It is more and more frequent that these verification strategies are mixed within the same system, so as to adopt the most appropriate one for each component. This increases the complexity of the integration phase because it has to cope with multiple formalisms, development and verification methods. Our goal is to propose a pragmatic process to integrate components developed using different methods into a single system and demonstrate that properties already verified for each component in isolation are preserved in their composition. This process leverages AADL as a pivotal modeling language for system specification and relies on specific verifications between the latter and the components developed using heterogeneous modeling and programming languages, namely Simulink for computation intensive parts and Ada/SPARK 2014 for other components. Our paper proceeds as follows. First we provide a high-level overview of our approach and enumerate the current methods for addressing the property preservation problem. Then we illustrate practically our approach using the Nose Gear Challenge problem, a simplified yet complete example of a high-integrity real-time system. We then conclude by comparing our approach to the state of the art.

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > AdaCore (FRANCE)
Laboratory name:
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Deposited By: Jerome Hugues
Deposited On:06 Mar 2014 15:02

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