1%Warning-IMPERFECTSCH: t/t_order_clkinst.v:19:16: Imperfect scheduling of variable: 't.c1_start' 2 19 | reg c1_start; initial c1_start = 0; 3 | ^~~~~~~~ 4 ... For warning description see https://verilator.org/warn/IMPERFECTSCH?v=latest 5 ... Use "/* verilator lint_off IMPERFECTSCH */" and lint_on around source to disable this message. 6%Warning-IMPERFECTSCH: t/t_order_clkinst.v:20:16: Imperfect scheduling of variable: 't.c1_count' 7 20 | wire [31:0] c1_count; 8 | ^~~~~~~~ 9%Warning-IMPERFECTSCH: t/t_order_clkinst.v:24:16: Imperfect scheduling of variable: 't.s2_count' 10 24 | wire [31:0] s2_count; 11 | ^~~~~~~~ 12%Warning-IMPERFECTSCH: t/t_order_clkinst.v:28:16: Imperfect scheduling of variable: 't.c3_count' 13 28 | wire [31:0] c3_count; 14 | ^~~~~~~~ 15%Warning-IMPERFECTSCH: t/t_order_clkinst.v:72:28: Imperfect scheduling of variable: 't.c1.runner' 16 72 | reg [31:0] runnerm1, runner; initial runner = 0; 17 | ^~~~~~ 18%Warning-IMPERFECTSCH: t/t_order_clkinst.v:101:28: Imperfect scheduling of variable: 't.s2.runner' 19 101 | reg [31:0] runnerm1, runner; initial runner = 0; 20 | ^~~~~~ 21%Warning-IMPERFECTSCH: t/t_order_clkinst.v:72:28: Imperfect scheduling of variable: 't.c3.runner' 22 72 | reg [31:0] runnerm1, runner; initial runner = 0; 23 | ^~~~~~ 24%Error: Exiting due to 25