Follow the steps suggested by nithya.
Use +UVM_OBJECTION_TRACE in simulation option and look for the simulation Log file for word "OBJ_TR*" string. You will came to know, which component has raise the objection and drop the objection.
Let me know how it works.
Sr. ASIC Verification Engineer
Product Engineering Services
Software | Embedded | Semiconductor
Frost & Sullivan Company of the Year 2013-14