Individual skill

counterexample-to-test-generator

Automatically generates executable test cases from model checking counterexample traces. Translates abstract counterexample states and transitions into concrete test inputs, execution steps, and assertions that reproduce property violations. Use when working with model checker outputs (SPIN, CBMC, NuSMV, TLA+, Java PathFinder, etc.) and needing to create regression tests, validate bug fixes, or reproduce verification failures in executable test suites.

skills/counterexample-to-test-generator/SKILL.md

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Last checked: Nov 11, 2026

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Repository stars (not skill ratings): 260
Repository last updated: Aug 21, 2026
License: Apache-2.0

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claude-skills Repository topic
metaprogramming Repository topic
software-development Repository topic
software-engineering Repository topic
claude Repository topic
claude-code Repository topic
testing Derived category

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SKILL.mdcore · 6,289 bytes
assets/test_templates/README.mddoc · 1,830 bytes
assets/test_templates/c_gtest_template.casset · 2,096 bytes
assets/test_templates/cpp_gtest_template.cppasset · 3,384 bytes
assets/test_templates/csharp_nunit_template.csasset · 4,323 bytes
assets/test_templates/java_junit_template.javaasset · 3,035 bytes
assets/test_templates/python_pytest_template.pyruns · 3,460 bytes
references/model_checker_formats.mddoc · 6,499 bytes

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# Counterexample To Test Generator

## Overview

This skill transforms counterexample traces from model checkers into executable test cases that reliably reproduce property violations. It bridges formal verification and testing by mapping abstract states to concrete values and generating runnable tests with clear traceability from counterexample steps to test logic.

## Workflow

### Step 1: Analyze Inputs

Gather and understand the counterexample trace and program:

1. **Identify the model checker format**: Determine which tool produced the counterexample (SPIN, CBMC, NuSMV, TLA+, JPF, etc.). See [references/model_checker_formats.md](references/model_checker_formats.md) for format details.