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Proof step 4 from proof in-used-h (previous step)

wlar[m] = wl-entry(m2, stat), m < # wlar, ∀ wlar, n. m ≤ # wlar → (n ∈ used-ecs(wlar, m) ↔ (∃ m1. m1 < m ∧ wlar[m1].status = used ∧ wlar[m1].ec = n)) ⊦ n ∈ (stat = used ⊃ used-ecs(wlar, m) ++ m2;used-ecs(wlar, m)) ↔ (∃ m0. ¬ m < m0 ∧ wlar[m0].status = used ∧ wlar[m0].ec = n)

User applied rule all left

And obtained the following new goals

Proof step 5:
wlar[m] = wl-entry(m2, stat), m < # wlar, m ≤ # wlar → (n ∈ used-ecs(wlar, m) ↔ (∃ m1. m1 < m ∧ wlar[m1].status = used ∧ wlar[m1].ec = n)) ⊦ n ∈ (stat = used ⊃ used-ecs(wlar, m) ++ m2;used-ecs(wlar, m)) ↔ (∃ m0. ¬ m < m0 ∧ wlar[m0].status = used ∧ wlar[m0].ec = n)

Rule argument

pos: left 3 terms: wlar, n abort: F discard: T computed: F

Additional information

Used terms: wlar, n