Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:51:29 2013

Optimize a model with 640 rows, 24700 columns and 248380 nonzeros
Presolve removed 20 rows and 500 columns
Presolve time: 0.42s
Presolved: 620 rows, 24200 columns, 228380 nonzeros
Variable types: 24020 continuous, 180 integer (180 binary)

Root relaxation: objective 3.600389e+04, 509 iterations, 0.02 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 36003.8892    0   14          - 36003.8892     -      -    0s
     0     0 36004.7322    0   14          - 36004.7322     -      -    0s
     0     0 36004.9575    0   14          - 36004.9575     -      -    0s
     0     0 36004.9969    0   14          - 36004.9969     -      -    0s
     0     0 36004.9969    0   14          - 36004.9969     -      -    1s
H    0     0                    41896.095256 36004.9969  14.1%     -    2s
     0     2 36004.9969    0   14 41896.0953 36004.9969  14.1%     -    3s
*   11     4              11    36202.402486 36198.7205  0.01%  25.4    3s

Cutting planes:
  Flow cover: 6

Explored 14 nodes (1172 simplex iterations) in 3.36 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.620240248627e+04, best bound 3.620240248627e+04, gap 0.0%