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{"record":{"state":"2 goals\ncase nat.zero\nn : ℕ\n⊢ n + 0 = 0 + n\n\ncase nat.succ\nn m' : ℕ,\nih : n + m' = m' + n\n⊢ n + succ m' = succ m' + n"},"response":"ok","seq_num":11}
{"record":{"state":"2 goals\ncase nat.zero\nn : ℕ\n⊢ n + 0 = 0 + n\n\ncase nat.succ\nn m' : ℕ,\nih : n + m' = m' + n\n⊢ n + succ m' = succ m' + n"},"response":"ok","seq_num":13}
{"record":{"state":"n m' : ℕ,\nih : n + m' = m' + n\n⊢ succ (n + m') = succ m' + n"},"response":"ok","seq_num":16}
{"record":{"state":"case nat.zero\nn : ℕ\n⊢ n + 0 = 0 + n"},"response":"ok","seq_num":25}
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