Documentation
Exhibit A has one rule: a runnable fail-to-pass test, or silence.
A VERIFIED Case shows that an exact generated test failed on the reported state for the expected reason and passed on the fixed state under deterministic execution. It does not prove developer intent, complete program correctness, universal causality, or that a candidate repair should be merged. Research scores and study reports are descriptive. They never override the deterministic flip check.

Produced by python3 -m exhibit_a.cli repro --replay on the checked-in
inventory_proven.json and inventory_silence.json Cases. Replay makes no model call and
executes no repository code. See the exact commands and capture record.
Read the project overview for the full product pitch, architecture, setup instructions, and Codex usage.
Evidence engine
- Operational contract
- Model provider boundary
- Evidence connectors
- Behavior-preserving refactor claims
- Mutation-testing foundation
- Verified evidence minimization
- Evidence strength scalar
Open science and EEF
- Executable Evidence Format
- Public evidence passport
- Private research assets
- Media provenance and authenticity
Research instruments
- Real-fix coverage study
- Real-fix coverage pilot results
- Historical real-fix coverage pilot v7
- Historical pilot v6 results
- Historical pilot v5 results
- Historical pilot v4 results
- Reproducibility-of-reproduction study
- Adversarial self-audit
- Oracle-gap probe
- Environment-inference dataset
- Execution-based bug identity
- Cross-version evidence archaeology
- Counterfactual patch triangulation
- Property-based escalation