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Proof step 5 from proof tolist-rec-inv (previous step)

inv(buf), # buf .data ≤ (i→n(buf .first) + n) % i→n(buf .size) ⊦ i→n(buf .size) ≠ 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
buf .size = 0, inv(buf), # buf .data ≤ (i→n(buf .first) + n) % 0 ⊦

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ i→n(i) = 0 ↔ i = 0])]]