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[CORE] Build CLI Static Formal Invariant Checker for Cross-Chain State #876

Description

@mijinummi

Labels: high-difficulty, rust, cli, bridgewise
Difficulty: High
Module: bridgewise-cli/src/invariants/


🧠 Concept

Develop a CLI tool within bridgewise-cli (bridgewise check-invariants) that performs static AST analysis to verify core mathematical invariants across bridge contract modules (e.g., verifying that total locked bridge assets strictly equal or exceed total minted wrapped assets across all chains).

⚠️ Problem

Accounting errors across multi-chain bridge deployments can introduce inflation bugs where minted wrapped tokens exceed backing reserves on source chains.

📁 Implementation Scope

  • bridgewise-cli/src/invariants/mod.rs
  • bridgewise-cli/src/invariants/state_verifier.rs

🛠️ Requirements

  1. Parse contract AST nodes to construct state modification graphs for balance variables.
  2. Evaluate state transitions against system invariants (e.g., $\Delta \text{LockedSourceAssets} \ge \Delta \text{MintedWrappedTokens}$).
  3. Report any execution path or function that permits invariant violations.

🎯 Acceptance Criteria

  • CLI accurately detects invariant violations in contract source code.
  • Integrates into standard CI/CD pipelines to prevent vulnerable pull requests from being merged.

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