counterexample-to-test-generator

# 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. 2. **Extract key information**: - Initial state values - Sequence of transitions/steps - Variable values at each step - Property violation point - Error condition or assertion failure 3. **Understand the program structure**: - Entry points and function signatures - Input parameters and their types - State variables involved in the trace - Control flow relevant to the counterexample ### Step 2: Map Abstract States to Concrete Values Translate the counterexample's abstract representation into concrete test inputs: 1. **Determine concrete values** for abstract state variables: - Map symbolic values to concrete instances - Resolve non-deterministic choices to specific values - Handle ranges and constraints from the model 2. **Identify input sequences**...