Invention Grant
- Patent Title: Converting formal verification testbench drivers with nondeterministic inputs to simulation monitors
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Application No.: US17398033Application Date: 2021-08-10
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Publication No.: US11675009B2Publication Date: 2023-06-13
- Inventor: Bradley Donald Bingham , Viresh Paruthi
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Cantor Colburn LLP
- Agent Stosch Sabo
- Main IPC: G06F11/22
- IPC: G06F11/22 ; G01R31/3183 ; G01R31/319

Abstract:
Techniques include configuring a sequential circuit monitor having been generated by applying a quantifier elimination to each random bit position of random inputs associated with a formal verification driver and selecting a value for random inputs to drive a next stage logic of sequential circuit simulation monitor, a state of the next stage logic being used by sequential circuit simulation monitor to generate sequential inputs to match those permitted by formal verification driver, formal verification driver being specified for a DUT input interface. An equivalence check between sequential circuit simulation monitor and original formal driver matches the same set of sequential inputs permitted original formal driver. The sequential circuit simulation monitor is coupled to a simulation environment and the DUT in simulation environment, sequential circuit simulation monitor being configured to flag an input sequence from the simulation environment not permitted by formal verification driver based on the sequential inputs.
Public/Granted literature
- US20220187368A1 CONVERTING FORMAL VERIFICATION TESTBENCH DRIVERS WITH NONDETERMINISTIC INPUTS TO SIMULATION MONITORS Public/Granted day:2022-06-16
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