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Finite state machine state transition identification

Technique

Finite state machine state transition identification is a technique referenced in DIFUZZRTL for RTL fuzzing. In that context, register-coverage guided fuzzing is used to efficiently and correctly identify state transitions in the finite state machines of RTL designs, helping guide testing of CPU RTL implementations.

First seen 6/28/2026
Last seen 6/28/2026
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Finite state machine state transition identification

Finite state machine state transition identification is a technique used in RTL fuzzing to determine when an RTL design's finite state machine has moved from one state to another. In the DIFUZZRTL work, this capability is part of a register-coverage guided fuzzing approach that is described as efficiently and correctly identifying state transitions in RTL finite state machines.[1]

Context in DIFUZZRTL

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NEIGHBORHOOD

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RELATIONSHIPS

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DiFuzzRTL ← implements 84% 1e
DIFUZZRTL includes logic to identify finite state machine transitions in RTL designs.
Register-Coverage Guided Fuzzing ← depends on 80% 1e
The register-coverage guided fuzzing technique relies on correctly identifying FSM state transitions.

LINKED ENTITIES

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DiFuzzRTL IMPLEMENTS Extracted graph relationship
Register-Coverage Guided Fuzzing DEPENDS_ON Extracted graph relationship

CITATIONS

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[1] DIFUZZRTL develops a register-coverage guided fuzzing technique that efficiently and correctly identifies state transitions in the finite state machines of RTL designs. DifuzzRTL: Differential Fuzz Testing to Find CPU Bugs
[2] Finite state machine state transition identification is used in the context of RTL fuzzing for CPU RTL designs in DIFUZZRTL. DifuzzRTL: Differential Fuzz Testing to Find CPU Bugs
[3] The available evidence does not provide the internal algorithm for the state transition identification technique; it only states its purpose and use within DIFUZZRTL. DifuzzRTL: Differential Fuzz Testing to Find CPU Bugs