An approach to formal verication of real time concurrent Ada programs
Why this work is in the frame
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Bibliographic record
Abstract
The SPARK system provides static analysis tools for a highly restricted sequential Ada subset, including a proof checking tool for verifying partial correctness properties. Recently, SPARK Ada has been extended to include much of the Ravenscar Tasking Pro le which supports construction of high integrity real time systems. However, the veri cation machinery has not been changed, and can only handle purely sequential properties of the code. This paper sketches an approach to reasoning about the concurrent and real-time aspects that SPARK cannot handle. The approach involves compiling an abstract model of the Ada program that can be embedded in a general purpose theorem prover (e.g. PVS). The compilation makes heavy use of SPARK's existing static analysis tools.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it