Throw if input file does not exist.
Throw if input file does not exist.

atgeirr/equelle,sintefmath/equelle,babrodtk/equelle,atgeirr/equelle,babrodtk/equelle,atgeirr/equelle,atgeirr/equelle,sintefmath/equelle,atgeirr/equelle,sintefmath/equelle,babrodtk/equelle,sintefmath/equelle,babrodtk/equelle,babrodtk/equelle,sintefmath/equelle,babrodtk/equelle,atgeirr/equelle,sintefmath/equelle,sintefmath/equelle,atgeirr/equelle,atgeirr/equelle,babrodtk/equelle,sintefmath/equelle