Coverage of Formal Properties Based on a High-Level Fault Model and Functional ATPG

Abstract

The use of model checking to validate descriptions of digital systems lacks a coverage metrics. If the set of formal properties defined to prove the correctness of the design is incomplete, the verification can lead to a false sense of security. This paper refines, extends, and compares with other symbolic approaches, a methodology to estimate the incompleteness of formal properties, which exploits a high-level fault model and functional ATPG.