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Proof step 53 from proof pop-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) ⊦ 〈buf0 := buf .first:= ((buf .first + 1) % buf .size) .len:= ((buf .first:= ((buf .first + 1) % buf .size)) .len - 1)〉 (inv(buf0) ∧ abs(buf0, x) ∧ a = ar0[i→n(i0)])

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 52:
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), ¬ inv(buf .first:= ((buf .first + 1) % buf .size) .len:= ((buf .first:= ((buf .first + 1) % buf .size)) .len - 1)) ∨ ¬ abs(buf .first:= ((buf .first + 1) % buf .size) .len:= ((buf .first:= ((buf .first + 1) % buf .size)) .len - 1), x) ∨ a ≠ ar0[i→n(i0)] ⊦

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]