# Pastebin xhRzgDii
Cannot route from BLK_TL-PLB.lutff_0_out[0] (rr_node: 3752 type: SOURCE ptc: 35 xlow: 6 ylow: 6) to BLK_TL-PIO_R.io_0_D_OUT[0] (rr_node: 4944 type: SINK ptc: 0 xlow: 8 ylow: 6) to -- no possible path
Warning 3201: Unable to route between blocks at (6,6) and (8,6) to characterize delay (setting to inf)
Warning 3202: Empty heap occurred in get_heap_head.
Warning 3203: Some blocks are impossible to connect in this architecture.
Cannot route from BLK_TL-PLB.lutff_0_out[0] (rr_node: 3752 type: SOURCE ptc: 35 xlow: 6 ylow: 6) to BLK_TL-PIO_R.io_0_D_OUT[0] (rr_node: 4970 type: SINK ptc: 0 xlow: 8 ylow: 7) to -- no possible path
Warning 3204: Unable to route between blocks at (6,6) and (8,7) to characterize delay (setting to inf)
Warning 3205: Empty heap occurred in get_heap_head.
Warning 3206: Some blocks are impossible to connect in this architecture.
Cannot route from BLK_TL-PLB.lutff_0_out[0] (rr_node: 3752 type: SOURCE ptc: 35 xlow: 6 ylow: 6) to BLK_TL-PIO_R.io_0_D_OUT[0] (rr_node: 4996 type: SINK ptc: 0 xlow: 8 ylow: 8) to -- no possible path
Warning 3207: Unable to route between blocks at (6,6) and (8,8) to characterize delay (setting to inf)
Warning 3208: Empty heap occurred in get_heap_head.
Warning 3209: Some blocks are impossible to connect in this architecture.
Cannot route from BLK_TL-PLB.lutff_0_out[0] (rr_node: 3752 type: SOURCE ptc: 35 xlow: 6 ylow: 6) to BLK_TL-PIO_R.io_0_D_OUT[0] (rr_node: 5022 type: SINK ptc: 0 xlow: 8 ylow: 9) to -- no possible path
Warning 3210: Unable to route between blocks at (6,6) and (8,9) to characterize delay (setting to inf)