I have a similar problem (release 1.14) on Ubuntu 18.04:

The following packages have unmet dependencies:

 omlib-modelicaads : Depends: omlib-aixlib-0.4.0 but it is not installable

However, a newer version of omlib-aixlib is available in the repository but omlib-modelicaads and omlib-arduino require older version that are not provide in the 'release' or 'stable' versions of OpenModelica