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Proof step 25 from proof initialization (previous step)

⊦ ∃ err0. (⌊err0⌋ ∨ err0 = ESUCCESS) ∧ ⟨err := err0; if err = ESUCCESS then avol := fill(mkavolume(m), unmapped) else avol := ?⟩ (avol = abs(fill(mkabstractvolume(m), erased)) ∧ ESUCCESS = err)

User applied rule exists right

And obtained the following new goals

Proof step 26:
⊦ (⌊ESUCCESS⌋ ∨ ESUCCESS = ESUCCESS) ∧ ⟨err := ESUCCESS; if err = ESUCCESS then avol := fill(mkavolume(m), unmapped) else avol := ?⟩ (avol = abs(fill(mkabstractvolume(m), erased)) ∧ ESUCCESS = err)

Rule argument

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

Additional information

Used terms: ESUCCESS