%Error-UNSUPPORTED: t/t_strength_highz.v:8:17: Unsupported: highz strength
    8 |    wire (weak0, highz1) a = 1;
      |                 ^~~~~~
                    ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
%Error-UNSUPPORTED: t/t_strength_highz.v:9:19: Unsupported: highz strength
    9 |    wire (strong1, highz0) b = 0;
      |                   ^~~~~~
%Error-UNSUPPORTED: t/t_strength_highz.v:10:10: Unsupported: highz strength
   10 |    wire (highz0, pull1) c = 0;
      |          ^~~~~~
%Error-UNSUPPORTED: t/t_strength_highz.v:11:10: Unsupported: highz strength
   11 |    wire (highz1, supply0) d = 1;
      |          ^~~~~~
%Error: Exiting due to