Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:30:35 2013

Optimize a model with 35459 rows, 34869 columns and 139299 nonzeros
Presolve removed 2687 rows and 0 columns
Presolve time: 0.21s
Presolved: 32772 rows, 34869 columns, 133925 nonzeros
Variable types: 34810 continuous, 59 integer (59 binary)

Root relaxation: objective 5.759083e+04, 5501 iterations, 0.74 seconds

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

     0     0 57590.8285    0    3          - 57590.8285     -      -    1s
H    0     0                    59100.000000 57590.8285  2.55%     -    1s
     0     0 57592.2073    0    6 59100.0000 57592.2073  2.55%     -    1s
     0     0 57592.2885    0    5 59100.0000 57592.2885  2.55%     -    1s
     0     2 57598.9657    0    5 59100.0000 57598.9657  2.54%     -    3s
H    6     6                    58150.166667 57686.4167  0.80%  71.2    3s
H    7     3                    57813.368421 57689.9474  0.21%  62.3    3s
H    8     2                    57758.283688 57696.0000  0.11%  60.6    3s
H   10     1                    57746.141844 57712.6962  0.06%  57.8    3s
*   11     1               9    57736.000000 57736.0000   0.0%  55.6    3s

Cutting planes:
  Gomory: 2
  Flow cover: 5

Explored 12 nodes (6179 simplex iterations) in 3.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.773600000000e+04, best bound 5.773600000000e+04, gap 0.0%