Optimal multibinding unification for sharing and linearity analysis

In the analysis of logic programs, abstract domains for detecting sharing properties are widely used. Recently, the new domain ShLin^omega has been introduced to generalize both sharing and linearity information. This domain is endowed with an optimal abstract operator for single-binding unification. The authors claim that the repeated application of this operator is also optimal for multibinding unification. This is the proof of such a claim.