Is is possible high intelligence is a product of evolution, however I doubt it.
*Sits down and straps himself in*
Okay then. What is it the product of?
Increasign brain size would have neccessitated increasing head size, probably causing a body weight imbalance. You could counter this by increasing rear bulk or tail length, but this would have been less energy efficient than adjusting their posture to be more upright and centre the weight better over their legs. Plus, long tails would have made them vulnerable to ambush by larger predators (the only realistic defence a dromaeosaur would have had against a larger tyrannosaurid type predator would have been to run away after all, leaving their rear exposed). Admittedly, a more upright posture might have been less efficient for speed and raptorial predation, but this could well have been the selection pressure that led to a further increase in brain size, just as humans had to increase their brain size in order to survive the much stronger selection pressure on the plains rather than in the somewhat safer trees.
Admittedly, it's not an air tight theory, but it's certainly (IMO) a viable route towards increased inteligence and upright posture in dromaeosaurs. I reckon that, in earthlike gravity, for terrestrial bipeds heading for sentience, upright posture is probably the way to go, simply because it's much easier to keep your big, heavy, well protected head directly above your centre of gravity that to have to put a big counterweight out behind you.
That's kinda my point. It's a route. But it's not necessarily the only one that they could have taken. They don't HAVE to become upright to survive. They could have. I'm not denying it. But they wouldn't have to.
In fact quite a few palaeontologists who have looked into the subject consider it fairly arrogant to say that dinosaurs would have ended up humanoid. Take a look at
this for instance as you might enjoy it
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