Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:13 2013

Optimize a model with 11934 rows, 11594 columns and 46274 nonzeros
Presolve removed 1242 rows and 0 columns
Presolve time: 0.06s
Presolved: 10692 rows, 11594 columns, 43790 nonzeros
Variable types: 11560 continuous, 34 integer (34 binary)

Root relaxation: objective 3.081131e+04, 1253 iterations, 0.06 seconds

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

     0     0 30811.3088    0    2          - 30811.3088     -      -    0s
H    0     0                    30879.000000 30811.3088  0.22%     -    0s
     0     0 30812.2809    0    3 30879.0000 30812.2809  0.22%     -    0s
     0     0 30812.3996    0    3 30879.0000 30812.3996  0.22%     -    0s
     0     0 30874.3333    0    1 30879.0000 30874.3333  0.02%     -    0s
H    0     0                    30876.000000 30874.3333  0.01%     -    0s

Cutting planes:
  Flow cover: 1

Explored 0 nodes (1321 simplex iterations) in 0.35 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.087600000000e+04, best bound 3.087433333333e+04, gap 0.0054%