Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:01:15 2013

Optimize a model with 18963 rows, 18533 columns and 74003 nonzeros
Presolve removed 625 rows and 0 columns
Presolve time: 0.10s
Presolved: 18338 rows, 18533 columns, 72753 nonzeros
Variable types: 18490 continuous, 43 integer (43 binary)

Root relaxation: objective 4.418576e+04, 3403 iterations, 0.27 seconds

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

     0     0 44185.7559    0    4          - 44185.7559     -      -    0s
H    0     0                    44291.000000 44185.7559  0.24%     -    0s
H    0     0                    44263.000000 44185.7559  0.17%     -    0s
     0     0 44185.9689    0    5 44263.0000 44185.9689  0.17%     -    0s
     0     0 44185.9689    0    5 44263.0000 44185.9689  0.17%     -    0s
     0     0 44248.0207    0    2 44263.0000 44248.0207  0.03%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 0 nodes (3524 simplex iterations) in 0.85 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.426300000000e+04, best bound 4.426300000000e+04, gap 0.0%