Improved invariant relevance
•Add desired invariants
–Implicit values
–Unused polymorphism
•Eliminate undesired invariants (and improve performance)
–Unjustified properties
–Redundant invariants
–Incomparable variables
[Make it clear that this is all completed work; I have solved these problems.]
A naive implementation wouldn’t (and didn’t) produce that exact output.  The simplified picture I have given you so far isn’t enough; it wouldn’t produce all the output you saw in the initial examples, and it would produce other undesirable output.  I will now give some additional details.

Discuss what relevance is.

Unused polymorphism:  overly wide types.

I will discuss each of these in turn.

Collectively/overall, how much improvement?  I can’t say, because these are not just quantitative but qualitative improvements.