Formal Verification Gates for AI Coding Loops

The article argues that AI-generated code requires a shift from behavioral constraints (like prompt instructions) to structural gates—automated checks like type systems and formal verification—to ensure critical properties like access control are enforced. The author introduces Shen-Backpressure, a tool using formal verification to create deterministic feedback loops that prevent AI models from violating invariants, rather than relying on models to remember rules across thousands of lines of generated code.