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Proof step 70 from proof datasize-further (previous step)

n0 ≤ n1, n0 ≤ # buf ⊦ datasize(buf, n0) = datasize(buf, n1) ↔ (∀ n. n0 ≤ n ∧ n < n1 → buf[n] = empty)

User applied rule structural induction

And obtained the following new goals

Proof step 18:
0 ≤ n1, 0 ≤ # buf ⊦ datasize(buf, 0) = datasize(buf, n1) ↔ (∀ n. 0 ≤ n ∧ n < n1 → buf[n] = empty)

Rule argument

indvar: n0

Additional information

[Concretesimprules((Csimpgen(nat freely generated by 0, +1;)))]