Monotonicity and the Precision of Program Analysis
summary
Paper proves that if a program is monotone (non‑decreasing or non‑increasing) on a bounded input space and yields a convex numeric output over a non‑relational domain that refines intervals, then there exists a complete abstract interpretation for that program and those inputs; it formalizes V‑monotonicity with a compositional proof system, gives examples including ReLU neural networks and composed monotone layers, and shows the best correct approximation is complete (existence proof only; termination/widening remains unresolved).
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chapters (14)
- 0:00Monotonicity in program analysis
- 1:49False alarms in analysis
- 3:12Abstract interpretation assumptions
- 5:58Completeness rarity in analysis
- 7:44Program monotonicity role
- 9:29ReLU monotonicity example
- 11:19V-monotonicity over variables
- 13:05Proving monotonicity
- 14:51V-complete analyzability
- 15:34Precision and semantics
- 16:21Q&A: Completeness limits
- 18:09Q&A: Widening operators
- 19:34Q&A: Monotone programs
- 20:41Q&A: Analyzer-program link
