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    The Verification Academy offers users multiple entry points to find the information they need. One of these entry points is through Topic collections. These topics are industry standards that all design and verification engineers should recognize. While we continue to add new topics, users are encourage to further refine collection information to meet their specific interests.
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    The Verification Academy will provide you with a unique opportunity to develop an understanding of how to mature your organization's processes so that you can then reap the benefits that advanced functional verification offers.
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  • Handling Inconclusive Assertions in Formal Verification

Handling Inconclusive Assertions in Formal Verification

Subject Matter Expert - Jin Hou | Handling Inconclusive Assertions in Formal Verification Course

Assertion-based formal verification can fully verify the functions of a design if all of the associated assertions can converge. Formal verification doesn’t need testbenches and can start much earlier in the process. It can consider all possible input stimulus sequences to find error traces of assertions or prove the assertions if no stimulus sequence can violate the assertions. The proof capability of formal doesn’t exist in simulation. More and more companies are adopting formal verification.

However, due to the complexity of designs we have today, almost inevitably the user will encounter non-convergence problems which occur when the tools are unable to find either proofs or error traces for some assertions. Capacity limitations are a well-known characteristic of today’s formal verification tools. Fortunately, designers and verification engineers can learn methods for analyzing these non-convergence problems and improving their verification results.

In this course, the instructor Jin Hou will introduce the techniques to help formal tools solve inconclusive assertions. She will show how to use tool options to help convergence, introduce techniques for reducing assertion and design complexity. She will also introduce advanced ND and DI techniques for reducing formal complexity, how to verify different functions separately, and bug hunting methods. Using these techniques, the user can get more results from formal tools.


Harry Foster
Jin Hou
Formal-Based Techniques
Walk Run

Sessions

Editor Insight

Editor Insight Session | Subject Matter Expert - Harry Foster | Handling Inconclusive Assertions in Formal Verification Course

This editor insight session provides an introduction and motivation for our new course, which is focused on handling inconclusive assertions in formal property checking.

Easy Solutions

Easy Solutions Session | Subject Matter Expert - Jin Hou | Handling Inconclusive Assertions in Formal Verification Course

In this session you will be introduced to easy solutions for handling inconclusive assertions by exploring tool options, and how to know where formal is stuck at.

Assertion Complexity Reduction

Assertion Complexity Reduction Session | Subject Matter Expert - Jin Hou | Handling Inconclusive Assertions in Formal Verification Course

In this session you will be introduced to the techniques that reduce the complexity of assumptions and checkers for formal verification, including under-constraining, over-constraining, assertion decomposition, adding “helper” assertion, assume-guarantee, and Questa® QFL assertion libraries.

Design Complexity Reduction

Design Complexity Reduction Session | Subject Matter Expert - Jin Hou | Handling Inconclusive Assertions in Formal Verification Course

In this session, you will be introduced to techniques to reduce the complexity of designs for formal verification, including understanding what formal is analyzing, easy ways to reduce design complexity, counter remodeling and memory remodeling examples.

Advanced Topic

Advanced Topic Session | Subject Matter Expert - Jin Hou | Handling Inconclusive Assertions in Formal Verification Course

In this session, you will be introduced to the techniques of separating functions, data-independence, non-determinism, and bug hunting that are very useful for formal verification.

Related Session

Inconclusive Debug Demo

Inconclusive Debug Demo

This session will demo how to debug an inconclusive property using Questa PropCheck.

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