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Proof step 7 from proof ls-datasize-wear-level (previous step)

# buf = LEB_SIZE, LEB_SIZE = n0 + m, subarray(buf, m, n0) = mkempbuf(n0), m < datasize(buf, LEB_SIZE), is-aligned(m, EB_PAGE_SIZE), m ≤ LEB_SIZE, aehdr = empty → avhdr = empty, aehdr ≠ garbage ∧ avhdr = empty → m = 0 ⊦ ∃ buf0. buf = mkempbuf(LEB_SIZE) + buf0

User applied rule weakening

And obtained the following new goals

Proof step 8:
# buf = LEB_SIZE, LEB_SIZE = n0 + m, subarray(buf, m, n0) = mkempbuf(n0), m < datasize(buf, LEB_SIZE), is-aligned(m, EB_PAGE_SIZE), m ≤ LEB_SIZE ⊦

Rule argument

poslist: left 7, left 8, right 1

Proof step 7 from proof ls-datasize-wear-level (previous step)

User applied rule weakening

And obtained the following new goals

Rule argument

Additional information