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Liveness Verification

Concept

Liveness verification is a formal-verification activity that checks whether a system can avoid states in which it never makes forward progress. In the provided evidence, it is presented as a necessary complement to safety verification for pipelined microprocessors, because a deadlocked processor—or even a device that does nothing—can satisfy some correspondence-style safety checks unless forward progress is also proven.

First seen 5/25/2026
Last seen 5/26/2026
Evidence 2 chunks
Wiki v1

WIKI

Definition

Liveness verification is the verification of whether a system can avoid getting into a state where it never makes forward progress. In the cited microprocessor-verification context, liveness is needed to show that a pipelined processor does not stall indefinitely. [1]

Role in formal verification

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RELATIONSHIPS

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Pipeline Stall compares with → 100% 1e
Liveness verification proves that the pipeline does not stall indefinitely.

CITATIONS

4 sources
4 citations — click to collapse
[1] Liveness verification checks that a system cannot get into a state where it never makes forward progress. Formal Verification of Pipelined Y86-64 Microprocessors with UCLID5
[2] A deadlocked processor, or even a device that does nothing, can pass the discussed verification unless liveness is also verified. Formal Verification of Pipelined Y86-64 Microprocessors with UCLID5
[3] For pipelined microprocessors, liveness verification is used to show that the pipeline does not stall indefinitely. Formal Verification of Pipelined Y86-64 Microprocessors with UCLID5
[4] The cited UCLID5 verification context models a pipelined microprocessor together with a sequential reference implementation and uses a verification script to initialize, operate, and check the system. Formal Verification of Pipelined Y86-64 Microprocessors with UCLID5