| 摘要 |
PROBLEM TO BE SOLVED: To efficiently simulate test data without any excess or shortage by changing a test data formation parameter automatically when a verification ratio becomes a predetermined condition. SOLUTION: A logic simulation system is provided with a verification ratio monitoring unit 105, a test data forming/selecting unit 12 or the like. The verification ratio monitoring unit 105 controls operated steps and unoperated steps according to logic simulation and grips the number of newly operated steps in every test data by a block unit for controlling it as a verification ratio. The test data forming/selecting unit 102 monitors the verification ratio received from the verification ratio monitoring unit 105 and changes a test data formation parameter when a verification ratio increment representing a difference between cumulative verification ratio until the previous time and the newest cumulative verification ratio is below a predetermined reference such as a tenth part of verification increment expected value computed by a predetermined way.
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