[FlopCpp] FLOP C++ Generation Time Issue

[Rohith Kumar.H.C]

Hello,
We are incrementally building a complex model using FLOP C++.
It has been noticed that, as new constraints and additional terms for
objective function are added the Flop C++ Generation time increases.
The point to worry is that the increase is quiet sharp with change in
problem size.

The analysis data has been presented below:

                                      Case-1    Case-2    Case-3
Case-4    Case-5
Rows                              6409       6409       12793     13177
13897
Columns                         6433       7657        14089    14233
14953
Non-Zeroes                     14729     18401       42081    43881    45465
Generation Time (secs)    0.145      0.150       0.420     0.562     1.049

We would like to know if this generation time can be reduced?
If yes, then what measure need to be taken to bring this down?

The constraints modeled use such_that to restrict the range of constraint.
Does this effect the overall performance?

Also what could be the other possible reasons for increased generation
times.

Regards
Rohith
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