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Proof step 3 from proof in-delta (previous step)

ecs(wlar).max = n0 + n1, wlar[n] = wl-entry(n0, stat), sum-of-differences(n0 + n1, ecs(wlar)) < n1, n < # wlar ⊦

User applied rule cut formula

And obtained the following new goals

Proof step 4:
ecs(wlar).max = n0 + n1, wlar[n] = wl-entry(n0, stat), n < # wlar, sum-of-differences(n0 + n1, ecs(wlar)) < n1, n0 ∈ ecs(wlar) ⊦

Rule argument

fma: n0 ∈ ecs(wlar)

Additional information

Used simplifier rules: in-ecs: ⊦ n < # wlar ∧ wlar[n] = wl-entry(m, stat) → m ∈ ecs(wlar); Used formulas: n0 ∈ ecs(wlar)