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Proof step 2 from proof lp (previous step)

⊦ m + n < m -1 ↔ false, m = 0

Heuristic simplifier applied rule simplifier

And closed the goal!

Rule argument

Additional information

Used simplifier rules: psh-04: ⊦ n ≠ 0 → (m < n -1 ↔ m +1 < n);%succ: ⊦ m +1 = m + 1;%l-02: ⊦ ¬ m + n < m;%a: ⊦ (m + n0) + n1 = m + n0 + n1;%c: ⊦ m + n = n + m;