1. A computer-implemented method comprising: retrieving a simulation model and timing results that correspond to the simulation model, the simulation model synthesized from a physical design file and the timing results generated from a physical design model that corresponds to the physical design file; identifying a critical path that resides between two components included in the simulation model based upon the timing results; inserting critical path measurement logic between the two components that is visible after synthesis, the critical path measurement logic including critical path logic that corresponds to the identified critical path; re-synthesizing the simulation model using the simulator after inserting the critical path measurement logic, which results in a modified simulation model; re-simulating the modified simulation model, which produces simulator-identified operating conditions based upon the critical path; and modifying the simulator based upon the simulator-identified operating conditions.