Gate-leve sim, sdf back annotation warnings

I am running sdf-back-annotated Gate-level sims. During ncelab, I see the following warnings: 1. ncelab: *W,SDFNEP: Failed Attempt to annotate to non-existent path (IOPATH CP Q) of instance :DUT0.u_core.u_cfg.u1_xxxx_apb.bus_sync1.clk_gate_dest_bus_reg.latch of module c065std_cell_icgX10 . The corresponding line (line 329587) in the SDF file is DELAY (ABSOLUTE (IOPATH CP Q (0.173::0.456) (0.183::0.486)) ) ) When I check the verilog for the standard cell library for the cell in question I see the following: specify (CP => Q) = (`c065std_cell_icgX10_CP_F_Q_F, `c065std_cell_icgX10_CP_R_Q_R); $setuphold(posedge CP, posedge TE, `c065std_cell_icgX10_TE_CP_SETUP, `c065std_cell_icgX10_TE_CP_HOLD, Notifier, ,EX ,CPdly, TEdly); $setuphold(posedge CP, negedge TE, `c065std_cell_icgX10_TE_CP_SETUP, `c065std_cell_icgX10_TE_CP_HOLD, Notifier, ,EX ,CPdly, TEdly); $setuphold(posedge CP, posedge E, `c065std_cell_icgX10_E_CP_SETUP, `c065std_cell_icgX10_E_CP_HOLD, Notifier, ,TEX ,CPdly, Edly); $setuphold(posedge CP, negedge E, `c065std_cell_icgX10_E_CP_SETUP, `c065std_cell_icgX10_E_CP_HOLD, Notifier, ,TEX ,CPdly, Edly); $width(negedge CP, `c065std_cell_icgX10_CP_PWL, 0, Notifier); endspecify Looking at this there does seem to be a path from CP -> Q. Can someone tell me why I still see this warning? 2. For the same module as above, I see the following warning ncelab: *W,SDFNSB: Attempt to annotate specify block data of instance :DUT0.u_core.u_cfg.u1_xxxx_apb.bus_sync1.clk_gate_dest_bus_reg.latch of module c065std_cell_icgX10, which has no specify block . The corresponding section in the SDF file (line 329591) is: (TIMINGCHECK (WIDTH (negedge CP) (0.120::0.120)) (SETUP (posedge TE) (posedge CP) (0.162::0.162)) (SETUP (negedge TE) (posedge CP) (0.084::0.084)) (SETUP (posedge E) (posedge CP) (0.295::0.295)) (SETUP (negedge E) (posedge CP) (0.246::0.246)) (HOLD (posedge TE) (posedge CP) (-0.115::-0.115)) (HOLD (negedge TE) (posedge CP) (-0.071::-0.071)) (HOLD (posedge E) (posedge CP) (-0.128::-0.128)) (HOLD (negedge E) (posedge CP) (-0.082::-0.082)) ) Looking at the afore-mentioned "specify" block can anyone help me understand the reason for this second warning? 3. Also the specify block contains $setuphold in an extended format. Can someone please explain the four fields after "notifier"? Thanks in advance Vishnu