Changes
```
Program threw an exception: [/home/mblatt/src/dune/opm/opm-simulators/opm/simulators/timestepping/AdaptiveTimeSteppingEbos.hpp:586] Solver failed to converge after cutting timestep 11 times.
```
to
```
Simulation aborted: Solver failed to converge after cutting timestep 11 times.
```
Which seems more user friendly.