The answer is nobody knows. But long ago I predicted that eventually both the government and Brexit would collapse and this remains the mostly likely outcome in the end. There is no arithmetic which suggests the plan will get through parliament, nor that the government can survive the outcome. The majority in the country is now against Brexit and wants to call the whole thing off. The prospect of another referendum is becoming ever more real.
In the short term there are signs that the right wing nationalists in the Tory party have overplayed their hand and that if May is forced into a no confidence vote she will win it. It is also now a glaring fact that these hard Brexit people, strident and self righteous as they are, hate everybody else’s plans but have none of their own. Like a fawning and troublesome lecher with ED.
That last sentence is for Boris. He likes that kind of prose as we know.