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Proof step 3 from proof remove-wbufs-at (previous step)

m < # lpt, m ∈ ns ⊦ lpt.mapIndices(ns, λ lp. lp.size:= LEB_SIZE)[m] = lpt[m].size:= LEB_SIZE

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
m < # lpt, m ∈ ns ⊦ # ns = 0, lpt.mapIndices(ns, λ lp. lp.size:= LEB_SIZE)[m] = lpt[m].size:= LEB_SIZE, ns = ∅

Rule argument

Additional information

Used simplifier rules: size-zero-01: ⊦ ns ≠ ∅ → # ns ≠ 0; (forward) from specification set-basic[nat-set]%ne-01: ⊦ n ∈ ns → ns ≠ ∅; (forward) from specification set-basic[nat-set]