aiT (WCET Analysis)
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Need to guarantee timing in your embedded system? aiT is a static timing analysis tool that computes safe upper bounds for worst-case execution time (WCET) directly on binary code. It analyzes all possible execution paths instead of only tested scenarios, while taking processor-specific behavior such as caches and pipelines into account. Unlike measurement-based approaches, aiT delivers deterministic and reliable timing results. This makes it possible to guarantee timing behavior, even in complex real-time and safety-critical systems.
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What aiT analyzes
aiT focuses on analyzing worst-case execution time (WCET) at a system-level and processor-aware level. It computes safe upper bounds for execution time by analyzing:
- Worst-case execution time of tasks and functions
- Timing behavior across all possible execution paths
- Cache effects and memory access patterns
- Pipeline behavior and processor states
- Loop bounds and recursion depth
- Control-flow and call graphs
- Interrupts and system-level timing constraints
- Binary-level execution behavior
In addition, aiT performs advanced analyses such as:
- Context-sensitive path analysis
- Abstract interpretation-based timing analysis
- Integration of cache and pipeline models
- Worst-case path visualization and inspection
- Difference analysis between software versions
General Features
Static WCET analysis
Computes safe upper bounds for execution time across all inputs and execution paths.
Binary-level analysis
Analyzes executables exactly as they run on the target hardware.
Processor-aware modeling
Includes cache and pipeline behavior for accurate timing results.
High precision WCET bounds
Delivers tight timing estimates without excessive overestimation.
Visualization and analysis tools
Inspect worst-case paths, control flow and timing behavior interactively.
Toolchain integration
Supports CI/CD pipelines and integration with development environments.
Qualification support
Supports standards such as ISO 26262, DO-178C and IEC 61508.
Why aiT
In real-time systems, testing alone cannot guarantee timing behavior. aiT enables a different approach:
From measurement
to guaranteed timing bounds
to guaranteed timing bounds
From assumptions
to processor-aware analysis
to processor-aware analysis
From overestimation
to precise WCET results
to precise WCET results
This results in:
Deterministic behavior
for real-time systems
for real-time systems
Reduced timing risks
in critical applications
in critical applications
Efficient hardware usage
without unnecessary margins
without unnecessary margins
When to use aiT
aiT is most valuable in environments where:
Real-time constraints must be guaranteed
Timing failures have high impact
Certification requires timing verification
Measurement-based analysis is insufficient
Typical domains include aerospace, automotive, industrial automation and other real-time embedded systems.
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André De Ceuninck
Software Quality | Testing | Certification
Need to guarantee timing behavior in your embedded system?
WCET analysis is complex on modern processors. Getting it right requires both tooling expertise and system-level insight. Get in touch with me for tailored advice on aiT and its application within your organization.
