Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:01:24 2013

Optimize a model with 473 rows, 18533 columns and 37023 nonzeros
Presolve time: 0.02s
Presolved: 473 rows, 18533 columns, 37023 nonzeros
Variable types: 18490 continuous, 43 integer (43 binary)

Root relaxation: objective 4.310139e+04, 886 iterations, 0.02 seconds

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

     0     0 43101.3886    0    6          - 43101.3886     -      -    0s
H    0     0                    44591.000000 43101.3886  3.34%     -    0s
H    0     0                    43507.000000 43101.3886  0.93%     -    0s
     0     0 43384.0952    0    2 43507.0000 43384.0952  0.28%     -    0s
     0     0 43417.2834    0    3 43507.0000 43417.2834  0.21%     -    0s
     0     0 43429.8315    0    5 43507.0000 43429.8315  0.18%     -    0s
     0     0 43434.0248    0    4 43507.0000 43434.0248  0.17%     -    0s
     0     0 43437.9969    0    8 43507.0000 43437.9969  0.16%     -    0s
     0     0 43439.2649    0    4 43507.0000 43439.2649  0.16%     -    0s
     0     0 43439.4384    0    4 43507.0000 43439.4384  0.16%     -    0s
     0     0 43439.5705    0    4 43507.0000 43439.5705  0.15%     -    0s
*    0     0               0    43443.000000 43443.0000   0.0%     -    0s

Cutting planes:
  Implied bound: 71
  Flow cover: 1

Explored 0 nodes (1248 simplex iterations) in 0.34 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.344300000000e+04, best bound 4.344300000000e+04, gap 0.0%