/usr/lib/x86_64-linux-gnu/libhdf5_cpp.so.11 is in libhdf5-cpp-11 1.8.16+docs-4ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libhdf5_cpp.so.11.0.0
/usr/lib/x86_64-linux-gnu/libhdf5_cpp.so.11.0.0