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Proof step 2 from proof in-delta (previous step)

ecs(wlar).max = n0 + n1, wlar[n] = wl-entry(n0, stat), n < # wlar ⊦ Δ wlar < n1 ↔ false

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
ecs(wlar).max = n0 + n1, wlar[n] = wl-entry(n0, stat), sum-of-differences(n0 + n1, ecs(wlar)) < n1, n < # wlar ⊦

Rule argument

Additional information

Used simplifier rules: delta-01: ⊦ Δ wlar = sum-of-differences(ecs(wlar).max, ecs(wlar));% ⊦ m < n → n ≠ 0; (s)%f: ⊦ m < n → n ≠ 0; (forward) from specification nat-basic