Here is the list of LABs and MLABs for one path. I would post the entire report, but it would not format nicely. To my mind, this is way too many layers for 6-input LUTs.
FF_X54_Y124_N38
FF_X54_Y124_N38
MLABCELL_X55_Y126_N39
MLABCELL_X55_Y126_N39
MLABCELL_X55_Y126_N39
LABCELL_X54_Y127_N30
LABCELL_X54_Y127_N30
LABCELL_X54_Y127_N30
LABCELL_X45_Y130_N54
LABCELL_X45_Y130_N54
LABCELL_X45_Y130_N54
MLABCELL_X49_Y129_N57
MLABCELL_X49_Y129_N57
MLABCELL_X49_Y129_N57
LABCELL_X50_Y127_N27
LABCELL_X50_Y127_N27
LABCELL_X50_Y127_N27
LABCELL_X51_Y127_N0
LABCELL_X51_Y127_N0
LABCELL_X51_Y127_N0
LABCELL_X51_Y125_N6
LABCELL_X51_Y125_N6
LABCELL_X51_Y125_N6
LABCELL_X50_Y125_N9
LABCELL_X50_Y125_N9
LABCELL_X50_Y125_N9
LABCELL_X51_Y122_N24
LABCELL_X51_Y122_N24
LABCELL_X51_Y122_N24
LABCELL_X50_Y122_N0
LABCELL_X50_Y122_N0
LABCELL_X50_Y122_N0
LABCELL_X51_Y120_N54
LABCELL_X51_Y120_N54
LABCELL_X51_Y120_N54
LABCELL_X51_Y120_N42
LABCELL_X51_Y120_N42
LABCELL_X51_Y120_N42
LABCELL_X50_Y119_N42
LABCELL_X50_Y119_N42
LABCELL_X50_Y119_N42
MLABCELL_X49_Y116_N9
MLABCELL_X49_Y116_N9
MLABCELL_X49_Y116_N9
LABCELL_X48_Y116_N18
LABCELL_X48_Y116_N18
LABCELL_X48_Y116_N18
MLABCELL_X42_Y117_N0
MLABCELL_X42_Y117_N0
MLABCELL_X42_Y117_N0
MLABCELL_X38_Y121_N12
MLABCELL_X38_Y121_N12
MLABCELL_X38_Y121_N12
LABCELL_X37_Y122_N24
LABCELL_X37_Y122_N24
LABCELL_X37_Y122_N24
LABCELL_X35_Y124_N51
LABCELL_X35_Y124_N51
LABCELL_X35_Y124_N51
LABCELL_X34_Y124_N54
LABCELL_X34_Y124_N54
LABCELL_X34_Y124_N54
LABCELL_X30_Y120_N51
LABCELL_X30_Y120_N51
LABCELL_X30_Y120_N51
LABCELL_X31_Y120_N9
LABCELL_X31_Y120_N9
LABCELL_X31_Y120_N9
LABCELL_X30_Y116_N48
LABCELL_X30_Y116_N48
LABCELL_X30_Y116_N48
LABCELL_X31_Y116_N18
LABCELL_X31_Y116_N18
LABCELL_X31_Y116_N18
LABCELL_X34_Y116_N54
LABCELL_X34_Y116_N54
LABCELL_X34_Y116_N54
LABCELL_X33_Y119_N0
LABCELL_X33_Y119_N0
LABCELL_X33_Y119_N0
MLABCELL_X29_Y113_N24
MLABCELL_X29_Y113_N24
MLABCELL_X29_Y113_N24
LABCELL_X35_Y120_N42
LABCELL_X35_Y120_N42
FF_X35_Y120_N44
FF_X35_Y120_N44