The secret? More spending on verification. More time, more resources and more money. As the systems have grown in size or in complexity, the work of verifying them has become the largest slice of the project time budget, accounting for over 40% the total design time and more. The efficiency of chasing bugs has become the determinant factor for reaching a product market window. Verification is a huge task. The complexity is not only to check each piece of IP separately. The challenge is verifying how these pieces collectively interact. There are a lot of interactions that cannot be defined really well from the functional behavior of the system's individual pieces.