For the below testcases we get the routing error:
quicklogic_testsuit/counter_32bit and bin2seven

Warning 3095: No routing path for connection to sink_rr 14092, retrying with full device bounding box
Cannot route from TL-CLOCK[0].CLOCK0_IC[0] (RR node: 24874 type: SOURCE location: (20,2) class: 0 capacity: 1) to TL-LOGIC[0].LOGIC0_BSL[0] (RR node: 14092 type: SINK location: (12,23) class: 10 capacity: 1) -- no possible path
Failed to route connection from 'set' to 'comb_out_LUT2_O.t_frag' for net 'comb_out_LUT2_O.XSL' (#3)
Routing failed.