I never heard the term. I assume you mean to separate sin that occurs by choice, and sin that occurs by chance. Like if we shoot somebody, we cause their death. It our car slips on icy pavement, and we kill them, that's an accident, but they are still dead.
God hates sin, because it blocks His blessings to us, and therefore our relationship (the person is dead either way, in our example). He works on our deliberate sins first, so He can expose our non-deliberate sins, and then He uses us to correct the evils in the world that cause accidents. Rom 8:19-23. (In our example, first he teaches us to put down the gun, then He teaches us that we can love and not want to kill, and finally He calls a few people to invent safer cars, and tells them how to do it.)