Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:59:32 2013

Optimize a model with 17261 rows, 16851 columns and 67281 nonzeros
Presolve removed 1843 rows and 0 columns
Presolve time: 0.09s
Presolved: 15418 rows, 16851 columns, 63595 nonzeros
Variable types: 16810 continuous, 41 integer (41 binary)

Root relaxation: objective 4.116511e+04, 2180 iterations, 0.13 seconds

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

     0     0 41165.1098    0    2          - 41165.1098     -      -    0s
H    0     0                    41847.000000 41165.1098  1.63%     -    0s
H    0     0                    41294.000000 41165.1098  0.31%     -    0s
     0     0 41167.4158    0    4 41294.0000 41167.4158  0.31%     -    0s

Cutting planes:
  Gomory: 2
  Flow cover: 1

Explored 0 nodes (2208 simplex iterations) in 0.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.129400000000e+04, best bound 4.129400000000e+04, gap 0.0%