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Proof step 13 from proof rmpos-get (previous step)

m < # x0, m < m1, m1 < # x0, m + 1 < # x0, ∀ m0, n0. m0 < # x0 ∧ n0 + 1 < # x0 → (x0 -1l m0)[n0] = (n0 < m0 ⊃ x0[n0];x0.rest[n0]) ⊦ m1 = 0, (x0 -1l m1)[m] = x0[m], x0 = []

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 5 terms: m1, m

Additional information

Used terms: m1, m