⊦ update(r, [], st) = st
∀ r, st. r ∈ st → update(r, fis0, st) .refs = st .refs, r ∈ st ⊦ update(r, fv + fis0, st) .refs = st .refs
[[CONCRETESIMPRULES : ([CSIMPGEN : fieldinits generated by [], +;])]]