Ibex is much slower than TIE-GT

[SvenPeldszus]

After migrating from TIE-GT to IBEX TGG I had to notice that the newer eMoflon is not only a bit slower but much slower that the old one.

While my test suite with very small examples is already much slower (all tests aggregated: 227.416s vs 769.056s), already only a little bigger models the trafo, which needed seconds before, doesn't terminate within hours.

Unfortunately, I've no idea how to debug this issue further.

The input data can be found here: https://dev.kom.e-technik.tu-darmstadt.de/gitlab/es-projects/gravity/tree/master/GRaViTY_Examples
The implementation of my TGG here: https://github.com/GRaViTY-Tool/gravity-tool/tree/master/implementation/org.gravity.tgg.modisco