create_clock constraint for Tempus

I have two create_clock constraints defined on the same pin and I have -add switch for that analysis.

One clock is inversion of the other and lets says the period is 144ps and one clock has rise edge at 0 and fall at 72 and is defined like this 

create_clock -name <name_clock> -add -period 144 -waveform {0 72} [get_pins <pin_name>]

This constraint works fine. I checked the clock report, which says lead edge at 0 and trail edge at 72 . But, the similar constraint to generate the inversion of it, doesn't work:

create_clock -name <name_clock_b> -add -period 144 -waveform {72 144} [get_pins <pin_name>]

or 

create_clock -name <name_clock_b> -add -period 144 -waveform {72 0} [get_pins <pin_name>]

I am still getting lead edge at 0 and trail edge at 72.

What is wrong with the constraint? Am I understanding the clock report wrongly? Is the lead edge is fall edge in the second constraint? How to verify the constraint/clock waveform? Please advise.