Overview

Questa GapFree

Questa GapFree optimizes quality of digital designs by proving all functionality for all inputs leading to low issue escape rates. Simplified usability enables deployment for designers and verification engineers. A clear criterion terminates GapFree verification and certifies sign-off.


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Hands on laptop showing Questa Gap Free
Key features

Confirm that design and specification match

GapFree is ideal for high-consequence systems where thorough verification is paramount to managing liability risks associated with functionality, security and functional safety. It allows for early verification to commence, ensuring steady and reliable progress until completion.

GapFree employs transactional assertions that encompass the entire circuit behavior, ensuring thorough coverage. A completeness checker rigorously identifies and addresses any verification gaps, ensuring that no aspect of the design is left unchecked. It meticulously identify specification gaps and close them with appropriate transactional assertions, which are then verified against the register transfer level (RTL). Any weak transactional assertions are pinpointed, strengthened and subsequently verified to maintain robustness and accuracy. Any missing transactional assertions are identified, hints to develop them are provided and later, they are thoroughly verified against the RTL.

  • Provides a robust verification process that enhances the reliability and security of the design
  • Effectively minimizes the chance of any inconsistency escaping detection
  • Completeness Checker plays a crucial role in identifying specification gaps and assertion errors that could potentially obscure RTL issues
  • Significantly accelerates later verification phases, optimizing the overall development timeline
  • Ensures the highest levels of integrity and reliability in critical system designs
Formal Verification

Featured white papers

Formal verification

Upcoming and on-demand events

View all available Formal Verification video recordings at the Verification Academy.

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Verification Academy

Verification Academy provides the skills necessary to mature an organization's functional verification process capabilities, providing a methodological bridge between high-level value propositions and the low-level details.

Verification Horizons blog

Insight and updates on concepts, values, standards, methodologies, and examples to assist with the understanding of what advanced functional verification technologies can do and how to most effectively apply them.

Verification Horizons

The Verification Horizons publication provides concepts, values, methodologies and examples to assist with the understanding of what advanced functional verification technologies can do and how to most effectively apply them.