If you read the articles on this, the timeline makes sense. No one has to be "psychic".
In 2015 Palestine applied to join the ICC.
Mossad's harassment of the ICC’s chief prosecutor seems to have begun straight after that.
Israel was already breaching international law with the settlements and flouting of the Geneva Conventions, and had been accused of war crimes in e.g. 2014.
If an entity is repeatedly accused of committing crimes it's not really some crazy conspiracy if prosecutors start taking an interest in their activities. And the more they escalate their criminal activity the more likely it is that an investigation and eventual warrant will follow.