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Proof step 19 from proof prepost-write-superblock (previous step)

# buf0 = encoding-size(sb, EB_PAGE_SIZE), avol0 = avol, ebm-vol-inv(avol), is-encoded(sb, buf0), encoding-size(sb, EB_PAGE_SIZE) ≤ LEB_SIZE ⊦ # avol = 0, ebm-vol-inv(avol) ∧ 0 < # avol ∧ encoding-size(sb, EB_PAGE_SIZE) ≤ # buf0 ∧ encoding-size(sb, EB_PAGE_SIZE) ≤ LEB_SIZE ∧ is-aligned(encoding-size(sb, EB_PAGE_SIZE), EB_PAGE_SIZE)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 20:
# buf0 = encoding-size(sb, EB_PAGE_SIZE), ebm-vol-inv(avol), is-encoded(sb, buf0), encoding-size(sb, EB_PAGE_SIZE) ≤ LEB_SIZE ⊦ # avol = 0, is-aligned(encoding-size(sb, EB_PAGE_SIZE), EB_PAGE_SIZE)

Rule argument

Additional information

Used simplifier rules: ⊦ m ≤ m; (s)% ⊦ 0 < m ↔ m ≠ 0; (s)