[Cbc] Question on resolving models

[Chase Slater]

Hi,

I could use a little help better understanding how Cbc works.  I trying to
solve many small integer problems.  Between solves, I change some of the
row bounds and objective coefficients but the number of rows and columns
remain the same.  I've tried the pattern in modify.cpp but I am incurring
too much overhead re-initializing the CbcModel object (and it's crashing
when I set a strategy).  Is there a faster pattern?

Thank you!

Chase


Psuedo code:

// ---- do this stuff once! ---
CoinModel build;
// .setColumnBounds, .setObjective, .setInteger, .addRow, etc.
OsiClpSolverInterface solver;
solver.loadFromCoinModel(build)
CbcModel model = CbcModel(solver);
CbcStrategyDefault strategy();
strategy.setupPreProcessing(1, 10);
model.setStrategy(strategy); // default strategy
model.branchAndBound();

// --- do this stuff many times ---
model.solver()->setRowUpper(i, value);
model.solver()->setObjCoeff(i, value);
model.branchAndBound(); // this part does not work because the model has
already been solved? Can I avoid reallocating the entire CbcModel object?
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