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Proof step 42 from proof initialization (previous step)

⌊err1⌋ ⊦ (⌊err1⌋ ∨ err1 = ESUCCESS) ∧ ⟨err := err1; if err = ESUCCESS then avol := fill(mkavolume(m), unmapped) else avol := ?⟩ (avol1 = avol ∧ err1 = err)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 43:
⌊err1⌋ ⊦ ⟨err := err1; if err = ESUCCESS then avol := fill(mkavolume(m), unmapped) else avol := ?⟩ (avol1 = avol ∧ err1 = err)

Proof step 42 from proof initialization (previous step)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information