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Proof step 12 from proof tolist-rec-inv (previous step)

inv(buf), # buf .data ≤ (i→n(buf .first) + n) % i→n(buf .size) ⊦ tolist(buf, n + 1) = tolist(buf, n) + (buf .data)[(i→n(buf .first) + n) % i→n(buf .size)] '

User applied rule weakening

And obtained the following new goals

Proof step 11:
inv(buf), # buf .data ≤ (i→n(buf .first) + n) % i→n(buf .size) ⊦

Rule argument

[fmaposlist-arg: (pos: right 1)]

Additional information

[[CONCRETESIMPRULES : ()]]