Formal verification can provide a large productivity gain in discovering, analyzing, and debugging complex problems buried deep in a design, which are suspected but not clearly visible or identifiable by other verification methods. However, with growing design complexity formal verification is becoming an essential part of verification methodologies to catch those bugs prone to be missed by simulation or other verification engines even after a large number of cycles.

This article from SemiWiki describes how the Synopsys VC Formal tool helps verification engineers to setup a design for formal verification, run, and debug in quick steps, thus making it very effective for reproducing and debugging deep-rooted problems.

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