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Proof step 22 from proof initialization (previous step)

⊦ ⟨fail_or_success#(; ; err); if err = ESUCCESS then ri := ∅, fs := ∅, fi := ∅, fo := ∅, ro := ∅, log := [], jvalid := true else ri := ?, fs := ?, fi := ?, fo := ?, ro := ?, log := ?, jvalid := ?⟩ (∅ = ro ∧ ∅ = fo ∧ ∅ = ri ∧ ∅ = fi ∧ log = [] ∧ fs = ∅ ∧ ESUCCESS = err)

Heuristic unfold applied rule call right

And obtained the following new goals

Proof step 23:
⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; if err = ESUCCESS then ri := ∅, fs := ∅, fi := ∅, fo := ∅, ro := ∅, log := [], jvalid := true else ri := ?, fs := ?, fi := ?, fo := ?, ro := ?, log := ?, jvalid := ?⟩ (∅ = ro ∧ ∅ = fo ∧ ∅ = ri ∧ ∅ = fi ∧ log = [] ∧ fs = ∅ ∧ ESUCCESS = err)

Rule argument

pos: right 1

Additional information

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