A Formal Model of a Run-Time Kernel for Ravenscar

Authors:
Kristina Lundqvist;Lars Asplund
Affiliations:
-;-
Venue:
RTCSA '99 Proceedings of the Sixth International Conference on Real-Time Computing Systems and Applications
Year:
1999

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Cited 4

Safety critical systems based on formal models

ACM SIGAda Ada Letters - special issue on presentations from SIGAda 2000
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Abstract

The Ravenscar tasking profile for Ada 95 has been designed to allow implementation of highly safety critical systems in Ada. Ravenscar defines a tasking run-time system with deterministic behavior and low complexity. We provide a formal model of the primitives provided by Ravenscar including exceptions. This formal model can be used to verify safety properties of applications targeting a Ravenscar-compliant run-time system. As an illustration of this, we model a sample application using all features of Ravenscar and formally verify its correctness using the real-time model checker UPPAAL.