Hello Pankaj,
Yes I noticed that, but my question was regarding the log files in the work directory of the instance, not the sapinst_dev.log itself. But as the issue happened so many time ago, it would be necessary to reproduce the issue once again. Then check the timestamp of the error in the fresh 'sapinst_dev.log' and compare with the log files in the /usr/sap/<sid>/<instance>/work directory to find the possible root cause for your issue.
Best Regards,
Henrique Girardi