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Proof step 8 from proof crash-neutral-read-data (previous step)

apebs[n6] = mkpeb(aehdr, avhdr, buf1, m, false), n6 < # apebs, ubi-io-inv(apebs), n4 + n3 ≤ # buf, n5 + n3 ≤ LEB_SIZE ⊦ ⟨fail_or_success#(; ; err); bitflips := ?; if err = ESUCCESS then buf := copy(apebs[n6].data, n5, buf, n4, n3) else choose buf1 with # buf1 = # buf ∧ range=(buf1, 0, buf, 0, n4) ∧ range=(buf1, n4 + n3, buf, n4 + n3, # buf - n4 + n3) in buf := buf1⟩ true

Heuristic weak unfold applied rule call right

And obtained the following new goals

Proof step 9:
apebs[n6] = mkpeb(aehdr, avhdr, buf1, m, false), n6 < # apebs, ubi-io-inv(apebs), n5 + n3 ≤ LEB_SIZE, n4 + n3 ≤ # buf ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; bitflips := ?; if err = ESUCCESS then buf := copy(apebs[n6].data, n5, buf, n4, n3) else choose buf1 with # buf1 = # buf ∧ range=(buf1, 0, buf, 0, n4) ∧ range=(buf1, n4 + n3, buf, n4 + n3, # buf - n4 + n3) in buf := buf1⟩ true

Rule argument

pos: right 1

Additional information

Used simplifier rules: fail_or_success#(; ; ERR) {choose ERR0 with ⌊ERR0⌋ ∨ ERR0 = ESUCCESS in ERR := ERR0};