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Proof step 35 from proof refine-isbad (previous step)

m < # apebs, abs(pebs, apebs), mtd-cons(pebs), ubi-io-inv(apebs), ⌊err0⌋ ⊦ ⟨fail_or_success#(; ; err); if err = ESUCCESS then isbad := apebs[m].bad else isbad := ?⟩ ((isbad1 ↔ isbad) ∧ err0 = err)

Heuristic unfold applied rule call right

And obtained the following new goals

Proof step 36:
m < # apebs, abs(pebs, apebs), mtd-cons(pebs), ubi-io-inv(apebs), ⌊err0⌋ ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; if err = ESUCCESS then isbad := apebs[m].bad else isbad := ?⟩ ((isbad1 ↔ isbad) ∧ err0 = err)

Rule argument

pos: right 1

Additional information

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