aiT WCET Analyzers statically compute tight bounds for the worst-case execution time (WCET) of tasks in real-time systems. They directly analyze binary executables and take the intrinsic cache and pipeline behavior into account.
In real-time systems, timely task completion is of the essence. Each real-time task has to be completed within a specified time frame in order to ensure that the system works correctly. In other words, it is essential that the WCET of each task is known.
However, computing the WCET is a challenge:
aiT WCET Analyzers provide the solution to these problems: they statically analyze a task’s intrinsic cache and pipeline behavior based on formal cache and pipeline models. This enables correct and tight upper bounds to be computed for the worst-case execution time.
The analyzers are based on the technique of abstract interpretation. A graphical user interface supports the visualization of the worst-case program path and the interactive inspection of all pipeline and cache states at arbitrary program points.
aiT was originally designed in close collaboration with Airbus France. For over a decade now, it’s been used at the Toulouse plant for validating the timing behavior of critical avionics software, including the flight control software of the A380.
Daimler uses aiT in many automotive software projects, including the powertrain control system of the new Actros truck.
Vestas uses aiT for static analysis of their wind turbine control software.
OHB uses aiT in the development of software for geostationary communication satellites and satellite navigation.
MTU uses aiT to demonstrate the correctness of control software for emergency power generators in power plants.
NASA used aiT as an industry-standard static analysis tool for demonstrating the absence of timing-related software defects in the 2010 Toyota Unintended Acceleration Investigation.
aiT is available for a wide and ever-growing array of target processors and compilers.
aiT supports tight integration with many state-of-the-art development tools, including:
aiT can also be combined with other analysis tools from AbsInt (e.g. StackAnalyzer for stack usage analysis) in the same user interface.
We offer special qualification support for aiT:
Our QSKs and QSLCD Reports have been successfully used by leading corporations in their qualification process, notably in the avionics and automotive industries.
aiT is also available as an integral part of the SCADE development environment, which is DO-178B qualified up to level A for Military and Aerospace Industries, IEC 61508 certified at SIL 3 by TÜV for Heavy Equipment and Energy, and EN 50128 certified at SIL 4 by TÜV for Rail Transportation.
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