Mountain View-based Synopsys, which develops semiconductor design verification software, said Monday that it has closed on its acquisition of ExpertIO, a provider of verification IP for standard protocols. Financial terms of the buy were not disclosed. Synopsys said that ExpertIO's entire team of engineers joins the firm's Verification Group. ExpertIO's verification IP is used for systems-on-a-chip designs. ExpertIO's founder and CEO, Craig Stoops, has joined Synopsys as a technical leader as part of the buy.