could not have

[keannu]

Many times "could not have" means a counterfactual result in conditionals or just presumption, but this is a third meaning "couldn't do something".
When do you use "could not have" to mean "couldn't do something"?

ex)A famous Roman poet said, "Books have a life of their own." He was right. In writing this book, I could not have dreamed of its future life. Now I am happy to see this new edition enriched by new pictures in color....

[philo2009]

Could not have Ved NEVER means couldn't V!

The example you cite is a perfectly straightforward counterfactual: I would not have been able to dream of this (i.e. even if I had tried to do so.)

[sumon.]

Could not have Ved NEVER means couldn't V!

Sorry to bother you
Could not have Ved NEVER means couldn't V!
What does Ved mean in the sentence above?
Does it means : Could not have never means could not do or anything.

..

[keannu]

Sorry to bother you
Could not have Ved NEVER means couldn't V!
What does Ved mean in the sentence above?
Does it means : Could not have never means could not do or anything.

..

Ved means past participle like done for do or eaten for eat, and the whole explanation means "could not have pp" is not equal to "couldn't do something".