%Warning-ASSIGNDLY: t/t_timing_net_delay.v:13:15: Unsupported: Ignoring timing control on this assignment. : ... In instance t 13 | wire[3:0] #4 val1 = cyc; | ^ ... For warning description see https://verilator.org/warn/ASSIGNDLY?v=latest ... Use "/* verilator lint_off ASSIGNDLY */" and lint_on around source to disable this message. %Warning-ASSIGNDLY: t/t_timing_net_delay.v:17:12: Unsupported: Ignoring timing control on this assignment. : ... In instance t 17 | assign #4 val2 = cyc; | ^ %Error: Exiting due to