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Proof step 6 from proof head-corr (previous step)

buf .len = 1 + n→i(# x), a ' + x = tolist(buf, i→n(buf .len)), inv(buf), a2 = a0 ∧ ar0 = buf .data ∧ i0 = buf .first, 0 ≤ i0 ∧ i0 < n→i(# ar0) ⊦ 〈a2 := ar0[i→n(i0)]〉 a = a2

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 5:
buf .len = 1 + n→i(# x), a ' + x = tolist(buf, i→n(buf .len)), inv(buf), a2 = a0 ∧ ar0 = buf .data ∧ i0 = buf .first, 0 ≤ i0 ∧ i0 < n→i(# ar0), a ≠ ar0[i→n(i0)] ⊦

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]