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Proof step 153 from proof inv-format (previous step)

# pebs = n0 + m1, # pebs0 = n0 + m1, err = err0, mtd-cons(pebs), mtd-cons(pebs0), ubi-io-initial(subarray(pebs, 0, m1)), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪m := m1; if err = ESUCCESS ∧ ¬ isbad then let aehdr = ?, bitflips = ? in {ubi_io_read_echdr#(m, EB_PAGE_SIZE, 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), EB_PAGE_SIZE; pebs; err)}}; m := m + 1⟫ ( m ≤ # pebs0 ∧ # pebs0 = # pebs ∧ mtd-cons(pebs) ∧ (err = ESUCCESS → ubi-io-initial(subarray(pebs, 0, m))) ∧ (err = ESUCCESS ∨ ⌊err⌋ ) ∧ # pebs0 < n0 + m), err = ESUCCESS, n0 = 0

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Proof step 154:
# pebs0 = n0 + m1, # pebs = n0 + m1, err = err0, m = m1, mtd-cons(pebs0), mtd-cons(pebs), ubi-io-initial(subarray(pebs, 0, m1)), ⌊err0⌋ ∨ err0 = ESUCCESS ⊦ ⟪if err = ESUCCESS ∧ ¬ isbad then let aehdr = ?, bitflips = ? in {ubi_io_read_echdr#(m, EB_PAGE_SIZE, 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), EB_PAGE_SIZE; pebs; err)}}; m := m + 1⟫ ( m ≤ # pebs0 ∧ # pebs0 = # pebs ∧ mtd-cons(pebs) ∧ (err = ESUCCESS → ubi-io-initial(subarray(pebs, 0, m))) ∧ (err = ESUCCESS ∨ ⌊err⌋ ) ∧ # pebs0 < n0 + m), err = ESUCCESS, n0 = 0

Proof step 153 from proof inv-format (previous step)

Heuristic symbolic execution applied rule assign right

And obtained the following new goals

Rule argument

Additional information