1. A method comprising: dividing, by a processor, a process distribution for an integrated circuit chip design into process windows; determining, by the processor, widths of distribution for a process parameter in the process windows, respectively, the process parameter impacting a timing parameter; based on the widths of distribution of the process parameter, assigning, by the processor, timing parameter adjustment factors to the process windows, respectively; performing, by the processor, a timing analysis of the integrated circuit chip design to acquire an initial solution for the timing parameter; for each specific process window, determining, by the processor, an adjusted solution for the timing parameter by adjusting the initial solution using a specific timing parameter adjustment factor assigned to the specific process window; and, given the adjusted solution for the timing parameter, predicting, by the processor, whether integrated circuit chips manufactured according to the integrated circuit chip design will meet a predetermined timing requirement.