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Proof step 23 from proof inv-read-echdr (previous step)

pebs[m0] = mkpeb(buf0, m1, false), m0 < # pebs, mtd-cons(pebs), EB_PAGE_SIZE ≤ PEB_SIZE ⊦ ∀ ehdr, err. (err = ESUCCESS ∨ ⌊err⌋ ) ∧ (err = ESUCCESS → is-encoded(ehdr, subarray(buf0, 0, EB_PAGE_SIZE))) → ⟪if err = ESUCCESS then aehdr := aechdr(ehdr.ec)⟫ true, subarray(buf0, 0, EB_PAGE_SIZE) = emptypage

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 24:
pebs[m0] = mkpeb(buf0, m1, false), subarray(buf0, 0, EB_PAGE_SIZE) ≠ emptypage, m0 < # pebs, mtd-cons(pebs), EB_PAGE_SIZE ≤ PEB_SIZE, err = ESUCCESS → is-encoded(ehdr, subarray(buf0, 0, EB_PAGE_SIZE)), err = ESUCCESS ∨ ⌊err⌋ ⊦ ⟪if err = ESUCCESS then aehdr := aechdr(ehdr.ec)⟫ true

Proof step 23 from proof inv-read-echdr (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information