Patent ID: 8856709

Claim:
A method for accommodating correlated parameters in statistical static timing analysis (SSTA), comprising: determining a correlation between at least two parameters; calculating a new parameter or new parameter set based on the correlation between the at least two parameters, the calculating comprising: calculating a correlation coefficient for the at least two parameters, the correlation coefficient being a measurement of a degree of a linear relationship between the at least two parameters; and calculating the new parameter as a linear combination of the at least two parameters when the calculated correlation coefficient is −1 or 1, or calculating the new parameter set as a transformation of the at least two parameters when the calculated correlation coefficient is not −1 or 1; performing the SSTA such that the new parameter or the new parameter set is propagated into the SSTA as the linear combination of the at least two parameters or the transformation of the at least two parameters rather than the at least two parameters separately; and projecting slack using the correlation between the at least two parameters and using a processor.