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Proof step 42 from proof initialization (previous step)

⌊err1⌋ ⊦ ∃ err0. (⌊err0⌋ ∨ err0 = ESUCCESS) ∧ ⟨err := err0; if err = ESUCCESS then ri := ∅, fs := ∅, fi := ∅, fo := ∅, ro := ∅, log := [], jvalid := true else ri := ?, fs := ?, fi := ?, fo := ?, ro := ?, log := ?, jvalid := ?⟩ (ri1 = ri ∧ fi0 = fi ∧ ro1 = ro ∧ fo1 = fo ∧ fs1 = fs ∧ log1 = log ∧ (jvalid1 ↔ jvalid) ∧ err1 = err)

User applied rule exists right

And obtained the following new goals

Proof step 43:
⌊err1⌋ ⊦ (⌊err1⌋ ∨ err1 = ESUCCESS) ∧ ⟨err := err1; if err = ESUCCESS then ri := ∅, fs := ∅, fi := ∅, fo := ∅, ro := ∅, log := [], jvalid := true else ri := ?, fs := ?, fi := ?, fo := ?, ro := ?, log := ?, jvalid := ?⟩ (ri1 = ri ∧ fi0 = fi ∧ ro1 = ro ∧ fo1 = fo ∧ fs1 = fs ∧ log1 = log ∧ (jvalid1 ↔ jvalid) ∧ err1 = err)

Rule argument

pos: right 1 terms: err1 abort: F discard: T computed: T

Additional information

Used terms: err1