Individual skill
abstract-invariant-generator
Uses abstract interpretation to automatically infer loop invariants, function preconditions, and postconditions for formal verification. Generates invariants that capture program behavior and support correctness proofs in Dafny, Isabelle, Coq, and other verification systems. Use when adding formal specifications to code, generating verification conditions, inferring contracts for functions, or discovering loop invariants for proofs.
skills/abstract-invariant-generator/SKILL.md
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- Last checked
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- Aug 21, 2026
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- Apache-2.0
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# Abstract Invariant Generator
## Overview
This skill uses abstract interpretation to automatically infer loop invariants, function preconditions, and postconditions. It generates formal specifications that support verification and reasoning about program correctness.
## Invariant Generation Workflow
### Step 1: Identify Specification Points
Analyze the code to identify where invariants are needed:
**Loop Invariants**: For each loop
```python