// proofs/adversarial/missing_step3.json (示例 GPT 输出)
{
  "proof_steps": [
    "Assume x, k, ε, α ∈ ℝ",
    "Simplify (x + k*ε^α) - x ⇔ k*ε^α",
    // “漏掉”了最后一步，因此 GPT 输出与 Lean/Coq 结果不一致
    "Thus, result = k*ε^α"
  ]
}