Improving logging of match failures

Summary

See https://www.eclipse.org/forums/index.php/t/1110816/

What is the current bug behavior?

extremely hard to find out where the match failed

What is the expected correct behavior?

Somehow make it easier by providing more information in the log

Relevant logs and/or screenshots

See https://www.eclipse.org/forums/index.php/t/1110816/

Titan version

8.1.0.r43.g6be5a7f2

/cc @aknappqwt