General Description: MAP combines comps from overlapping NCF range constraints into the same slice; it then assigns a PCF range constraint to the resulting slice that is the intersection of the two ranges. The two ranges are R61C1:R80C50 and R35C49:R61C87, which combine to the limited range of R61C49:R61C50.
The result is that 20 slices are constrained to a range that can handle only 4. This leads to the PAR error:
ERROR:Place:1840 - The design has objects that are constrained to the range of sites between CLB_R61C49.S1 and CLB_R61C50.S0. The number of objects constrained to the range (20) is too large for the size of the range capacity (4).
To work around this problem, do not overlap range constraints.