Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:15:46 2013

Optimize a model with 28673 rows, 28143 columns and 112413 nonzeros
Presolve removed 4803 rows and 0 columns
Presolve time: 0.17s
Presolved: 23870 rows, 28143 columns, 102807 nonzeros
Variable types: 28090 continuous, 53 integer (53 binary)

Root relaxation: objective 5.998299e+04, 4656 iterations, 0.51 seconds

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

     0     0 59982.9914    0    3          - 59982.9914     -      -    0s
H    0     0                    60212.000000 59982.9914  0.38%     -    0s
     0     0 59983.6547    0    5 60212.0000 59983.6547  0.38%     -    0s
     0     0 59983.7418    0    5 60212.0000 59983.7418  0.38%     -    1s
     0     2 59989.0954    0    5 60212.0000 59989.0954  0.37%     -    1s
*    3     2               3    60091.000000 60064.5304  0.04%  48.7    1s

Cutting planes:
  Gomory: 2
  Flow cover: 2

Explored 9 nodes (4991 simplex iterations) in 2.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.009100000000e+04, best bound 6.009100000000e+04, gap 0.0%