Yep farc has been operating there for like 5 decades. Guerilla movements are really really hard to take down.

The real question is how the locals will react to this invasion. A lot of them hated the Maduro regime after it continued the economic decline of the country. OTOH they are about to be occupied by an imperialist country, have their natural resources plundered, and likely experience martial law. There's no greater radicalizing influence than having a loved one killed or their property stolen by a hostile state.