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Proof step 2 from proof inv-format (previous step)

m0 = m ⊦ ⟪mtd_asm_init#(; ; pebs, err); mtd_asm_get_page_size#(pebs; ; m0); if err = ESUCCESS then let n = ? in {mtd_asm_get_blockcount#(pebs; ; n); let m = 0 in while m < n ∧ err = ESUCCESS do {/* (inv-format : invariant m ≤ n ∧ n = # pebs ∧ mtd-cons(pebs) ∧ (err = ESUCCESS → ubi-io-initial(subarray(pebs, 0, m))) ∧ (err = ESUCCESS ∨ ⌊err⌋ ) wfbound n - m) */; let isbad = ? in {mtd_asm_isbad#(m, pebs; ; isbad, err); if err = ESUCCESS ∧ ¬ isbad then let aehdr = ?, bitflips = ? in {ubi_io_read_echdr#(m, m0, pebs; aehdr; bitflips, err); let n = (err = ESUCCESS ∧ aehdr.valid? ⊃ aehdr.ec + 1;0) in {mtd_asm_erase#(m; pebs; err); if err = ESUCCESS then ubi_io_write_echdr#(m, aechdr(n), m0; pebs; err)}}}; m := m + 1}}⟫ ((err = ESUCCESS → m0 = EB_PAGE_SIZE ∧ mtd-cons(pebs)) ∧ (err = ESUCCESS → ubi-io-initial(pebs)) ∧ (err = ESUCCESS ∨ ⌊err⌋ ))

User applied rule insert program lemma

And obtained the following new goals

Rule argument

spec: mtd-asm name: inv-init seq: ⊦ ⟪mtd_asm_init#(; ; pebs, err)⟫ ( (err = ESUCCESS → mtd-cons(pebs)) ∧ (err = ESUCCESS ∨ ⌊err⌋ )) subst: [err, pebs] → [err, pebs] flags: <all paths>

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