Unrepair Math-78 by JKali

jGenProg arrives to repair with Gzoltar, but not with Flacoco (which does not fail)
Logs for the two executions, first gzoltar, then Flacoco

https://github.com/martinezmatias/astor/runs/3676644911?check_suite_focus=true#step:8:3314

Start by comparing the two executions in the linked logs, first with Gzoltar and then with Flacoco, and trace how jGenProg handles the Math-78 repair case. Reproduce the difference and determine why Flacoco does not fail; done means the issue is explained and the corresponding repair behavior is corrected or clearly documented.

Written by the indexing model from the issue text.