1. A non-transitory, computer-readable recording medium which stores a waveform verification program that causes a memory and one or more processors, which are coupled to the memory and configured to verify a quality of a signal waveform that is propagated through focused wiring on a substrate, to perform a process comprising: determining a relative permittivity of the substrate in a division position of a variation range of the relative permittivity of the substrate such that a variation range of a propagation delay time of the signal waveform corresponding to the variation range of the relative permittivity of the substrate is divided at even intervals; generating an analysis model corresponding to the relative permittivity of the substrate in the determined division position; performing waveform analysis on the signal waveform using the generated analysis model; and generating an eye pattern according to the waveform analysis performed on the signal waveform for each analysis model.