1%Warning-UNOPT: t/t_unopt_converge.v:19:11: Signal unoptimizable: Feedback to public clock or circular logic: 'x' 2 19 | output x; 3 | ^ 4 ... For warning description see https://verilator.org/warn/UNOPT?v=latest 5 ... Use "/* verilator lint_off UNOPT */" and lint_on around source to disable this message. 6 t/t_unopt_converge.v:19:11: Example path: x 7 t/t_unopt_converge.v:22:4: Example path: ALWAYS 8 t/t_unopt_converge.v:19:11: Example path: x 9%Error: Exiting due to 10