%Error-UNSUPPORTED: t/t_interface_top_bad.v:17:19: Unsupported: Interfaced port on top level module
   17 |    ifc.counter_mp c_data
      |                   ^~~~~~
                    ... For error description see https://verilator.org/warn/UNSUPPORTED?v=latest
%Error: t/t_interface_top_bad.v:17:4: Interface 'ifc' not connected as parent's interface not connected
                                    : ... Perhaps caused by another error on the parent interface that needs resolving
                                    : ... Or, perhaps intended an interface instantiation but are missing parenthesis (IEEE 1800-2023 25.3)?
   17 |    ifc.counter_mp c_data
      |    ^~~
        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
%Error: Exiting due to