MS Visual Studio 2005

==============================================================
==========      cbcSolve default settings           ==========      
==============================================================

call: cbcSolve testfile.mps -branch

CBC 2.0.0 (tarball)

Cbc0031I 6 added rows had average density of 3
Cbc0013I At root node, 6 cuts changed objective from 160.236 to 195.305 in 2 passes
Cbc0014I Cut generator 0 (Probing) - 15 row cuts (6 active), 28 column cuts  in 0.031 seconds - new frequency is 1
Cbc0014I Cut generator 1 (Gomory) - 0 row cuts (0 active), 0 column cuts  in 0.000 seconds - new frequency is -100
Cbc0014I Cut generator 2 (Knapsack) - 0 row cuts (0 active), 0 column cuts  in 0.063 seconds - new frequency is -100
Cbc0014I Cut generator 3 (Clique) - 0 row cuts (0 active), 0 column cuts  in 0.000 seconds - new frequency is -100
Cbc0014I Cut generator 4 (MixedIntegerRounding2) - 1 row cuts (0 active), 0 column cuts  in 0.031 seconds - new frequenc
y is -100
Cbc0014I Cut generator 5 (FlowCover) - 0 row cuts (0 active), 0 column cuts  in 0.015 seconds - new frequency is -100
Cbc0014I Cut generator 6 (TwoMirCuts) - 0 row cuts (0 active), 0 column cuts  in 0.016 seconds - new frequency is -100

CBC 2.1.0

Cbc0031I 18 added rows had average density of 82.3333
Cbc0013I At root node, 18 cuts changed objective from 160.236 to 221.561 in 18 passes
Cbc0014I Cut generator 0 (Probing) - 256 row cuts (9 active), 41 column cuts  in 0.580 seconds - new frequency is 1
Cbc0014I Cut generator 1 (Gomory) - 790 row cuts (8 active), 0 column cuts  in 0.186 seconds - new frequency is 1
Cbc0014I Cut generator 2 (Knapsack) - 18 row cuts (1 active), 0 column cuts  in 0.533 seconds - new frequency is -100
Cbc0014I Cut generator 3 (Clique) - 0 row cuts (0 active), 0 column cuts  in 0.015 seconds - new frequency is -100
Cbc0014I Cut generator 4 (MixedIntegerRounding2) - 5 row cuts (0 active), 0 column cuts  in 0.125 seconds - new frequenc
y is -100
Cbc0014I Cut generator 5 (FlowCover) - 0 row cuts (0 active), 0 column cuts  in 0.327 seconds - new frequency is -100
Cbc0014I Cut generator 6 (TwoMirCuts) - 135 row cuts (0 active), 0 column cuts  in 0.267 seconds - new frequency is -100


CBC 2.2.2

Cbc0013I At root node, 3 cuts changed objective from 160.236 to 160.296 in 5 passes
Cbc0014I Cut generator 0 (Probing) - 6 row cuts, 8 column cuts (2 active)  in 0.157 seconds - new frequency is 1
Cbc0014I Cut generator 1 (Gomory) - 35 row cuts, 0 column cuts (0 active)  in 0.032 seconds - new frequency is 1
Cbc0014I Cut generator 2 (Knapsack) - 0 row cuts, 0 column cuts (0 active)  in 0.124 seconds - new frequency is -100
Cbc0014I Cut generator 3 (Clique) - 0 row cuts, 0 column cuts (0 active)  in 0.000 seconds - new frequency is -100
Cbc0014I Cut generator 4 (MixedIntegerRounding2) - 2 row cuts, 0 column cuts (1 active)  in 0.063 seconds - new frequenc
y is -100
Cbc0014I Cut generator 5 (FlowCover) - 0 row cuts, 0 column cuts (0 active)  in 0.063 seconds - new frequency is -100
Cbc0014I Cut generator 6 (TwoMirCuts) - 37 row cuts, 0 column cuts (0 active)  in 0.123 seconds - new frequency is -100


CBC 2.3.0

Cbc0013I At root node, 3 cuts changed objective from 160.236 to 160.296 in 6 passes
Cbc0014I Cut generator 0 (Probing) - 6 row cuts, 0 column cuts (1 active)  in 0.109 seconds - new frequency is 1
Cbc0014I Cut generator 1 (Gomory) - 36 row cuts, 0 column cuts (1 active)  in 0.000 seconds - new frequency is 1
Cbc0014I Cut generator 2 (Knapsack) - 0 row cuts, 0 column cuts (0 active)  in 0.156 seconds - new frequency is -100
Cbc0014I Cut generator 3 (Clique) - 0 row cuts, 0 column cuts (0 active)  in 0.000 seconds - new frequency is -100
Cbc0014I Cut generator 4 (MixedIntegerRounding2) - 2 row cuts, 0 column cuts (0 active)  in 0.063 seconds - new frequenc
y is -100
Cbc0014I Cut generator 5 (FlowCover) - 0 row cuts, 0 column cuts (0 active)  in 0.077 seconds - new frequency is -100
Cbc0014I Cut generator 6 (TwoMirCuts) - 36 row cuts, 0 column cuts (0 active)  in 0.095 seconds - new frequency is -100

==============================================================
==========      cbcSolve only probing cuts          ==========      
==============================================================


call: cbcSolve testfile.mps -cuts off -probing on -branch


CBC 2.0.0 (tarball)

Cgl0004I processed model has 588 rows, 494 columns (364 integer) and 3441 elements
...
Cbc0013I At root node, 6 cuts changed objective from 160.236 to 195.305 in 2 passes
Cbc0014I Cut generator 0 (Probing) - 14 row cuts (6 active), 28 column cuts  in 0.016 seconds - new frequency is 1


CBC 2.1.0 (tarball)

Cgl0004I processed model has 585 rows, 488 columns (364 integer) and 3435 elements
...
Cbc0013I At root node, 0 cuts changed objective from 160.236 to 160.236 in 1 passes
Cbc0014I Cut generator 0 (Probing) - 0 row cuts (0 active), 0 column cuts  in 0.016 seconds - new frequency is 10


CBC 2.2.2 (tarball)

Cgl0004I processed model has 585 rows, 466 columns (342 integer) and 3413 elements
...
Cbc0013I At root node, 0 cuts changed objective from 160.236 to 160.236 in 1 passes
Cbc0014I Cut generator 0 (Probing) - 0 row cuts, 0 column cuts (0 active)  in 0.016 seconds - new frequency is 1000


CBC 2.3.0 (tarball)

Cgl0004I processed model has 585 rows, 466 columns (342 integer) and 3413 elements
...
Cbc0013I At root node, 0 cuts changed objective from 160.236 to 160.236 in 1 passes
Cbc0014I Cut generator 0 (Probing) - 0 row cuts, 0 column cuts (0 active)  in 0.015 seconds - new frequency is 1000



=================================================================================
==========      cbcSolve only probing cuts, w/o presolve, preprocess   ==========      
=================================================================================

Call: cbcSolve testfile.mps -cuts off -probing on -presolve off -preprocess off -branch


Cbc-2.0.0

Cbc0013I At root node, 17 cuts changed objective from 160.236 to 206.922 in 7 passes
Cbc0014I Cut generator 0 (Probing) - 112 row cuts (17 active), 11 column cuts  in 0.045 seconds - new frequency is 1


CBC 2.1.0

Cbc0013I At root node, 0 cuts changed objective from 160.236 to 160.236 in 1 passes
Cbc0014I Cut generator 0 (Probing) - 36 row cuts (0 active), 0 column cuts  in 0.016 seconds - new frequency is 1


CBC 2.2.2

Cbc0013I At root node, 0 cuts changed objective from 160.236 to 160.236 in 1 passes
Cbc0014I Cut generator 0 (Probing) - 38 row cuts, 0 column cuts (0 active)  in 0.032 seconds - new frequency is 1


CBC 2.3.0

Cbc0013I At root node, 0 cuts changed objective from 160.236 to 160.236 in 1 passes
Cbc0014I Cut generator 0 (Probing) - 38 row cuts, 0 column cuts (0 active)  in 0.016 seconds - new frequency is 1



==============================================================
==========      small driver derived from sample1   ==========      
==========        all bounds poor                   ==========
==============================================================


Driver (derived from sample1.cpp), results on different CBC-Versions are included in a comment

#include <cassert>
#include "CbcConfig.h"
#include "OsiSolverInterface.hpp"
#include "CbcModel.hpp"
#include "OsiClpSolverInterface.hpp"
#include "ClpPresolve.hpp"
#include "CglProbing.hpp"

/************************************************************************
This main program reads in an integer model from an mps file.
It then sets up some Cgl cut generators and calls branch and cut.
************************************************************************/

int main (int argc, const char *argv[])
{
  ClpSimplex simplex;
  simplex.readMps(argv[1],"");
  
  // Should work with OsiPresolve but not sure - so this is complicated
  ClpPresolve pinfo;
  ClpSimplex * simplex2 = pinfo.presolvedModel(simplex,1.0e-8);
  OsiClpSolverInterface solver1(simplex2);
 
  // Do initial solve to continuous
  solver1.initialSolve();
 
  CbcModel model(solver1);

  CglProbing generator1;
  generator1.setUsingObjective(true);
  generator1.setMaxPass(30);
  generator1.setMaxProbe(100);
  generator1.setMaxProbeRoot(500);
  generator1.setMaxLook(100);
  generator1.setMaxLookRoot(100);
  generator1.setMaxElements(2000);
  
  generator1.setRowCuts(3);
 
  // Add in generators
  model.addCutGenerator(&generator1,-1,"Probing");
  
  // Do an uncomplete search  on 1 node

  model.setIntParam(CbcModel::CbcMaxNumNode,1);
  model.branchAndBound();
  
  return 0;
}    

/* Results:

CBC 2.0.0:
Cbc0013I At root node, 0 cuts changed objective from 160.236 to 160.236 in 1 passes
Cbc0014I Cut generator 0 (Probing) - 6 row cuts (0 active), 0 column cuts

CBC 2.1.0
Cbc0013I At root node, 0 cuts changed objective from 160.236 to 160.236 in 1 passes
Cbc0014I Cut generator 0 (Probing) - 6 row cuts (0 active), 0 column cuts

CBC 2.2.2
Cbc0013I At root node, 0 cuts changed objective from 160.236 to 160.236 in 1 passes
Cbc0014I Cut generator 0 (Probing) - 6 row cuts, 0 column cuts (0 active)

CBC 2.3.0
Cbc0013I At root node, 0 cuts changed objective from 160.236 to 160.236 in 1 passes
Cbc0014I Cut generator 0 (Probing) - 0 row cuts, 0 column cuts (0 active)
*/