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Proof step 14 from proof inv-read-echdr (previous step)

# buf1 = EB_PAGE_SIZE, pebs[m0] = mkpeb(buf0, m1, false), m0 < # pebs, mtd-cons(pebs), EB_PAGE_SIZE ≤ PEB_SIZE, err = ESUCCESS → buf1 = subarray(buf0, 0, EB_PAGE_SIZE), err = ESUCCESS ∨ ⌊err⌋ ⊦ ⟪if err = ESUCCESS then if buf1 = emptypage then aehdr := empty else let ehdr = ? in {decode_echeader#(EB_PAGE_SIZE, buf1; ehdr; err); if err = ESUCCESS then aehdr := aechdr(ehdr.ec)}⟫ true

Heuristic conditional right split applied rule if right

And obtained the following new goals

Proof step 15:
# buf1 = EB_PAGE_SIZE, pebs[m0] = mkpeb(buf0, m1, false), err = ESUCCESS, m0 < # pebs, mtd-cons(pebs), EB_PAGE_SIZE ≤ PEB_SIZE, err = ESUCCESS → buf1 = subarray(buf0, 0, EB_PAGE_SIZE), err = ESUCCESS ∨ ⌊err⌋ ⊦ ⟪if buf1 = emptypage then aehdr := empty else let ehdr = ? in {decode_echeader#(EB_PAGE_SIZE, buf1; ehdr; err); if err = ESUCCESS then aehdr := aechdr(ehdr.ec)}⟫ true
Proof step 27:
# buf1 = EB_PAGE_SIZE, pebs[m0] = mkpeb(buf0, m1, false), m0 < # pebs, mtd-cons(pebs), EB_PAGE_SIZE ≤ PEB_SIZE, err = ESUCCESS → buf1 = subarray(buf0, 0, EB_PAGE_SIZE), err = ESUCCESS ∨ ⌊err⌋ ⊦ ⟪skip⟫ true, err = ESUCCESS

Rule argument

pos: right 1

Proof step 14 from proof inv-read-echdr (previous step)

Heuristic conditional right split applied rule if right

And obtained the following new goals

Rule argument

Additional information