Gurobi 5.0.1 (linux64) logging started Tue Apr 23 22:02:12 2013

Optimize a model with 2600 rows, 2550 columns and 10050 nonzeros
Presolve removed 50 rows and 1 columns
Presolve time: 0.01s
Presolved: 2550 rows, 2549 columns, 9949 nonzeros
Variable types: 2500 continuous, 49 integer (49 binary)

Root relaxation: objective 8.518562e+05, 208 iterations, 0.00 seconds

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

     0     0 851856.166    0    2          - 851856.166     -      -    0s
H    0     0                    855135.07500 851856.166  0.38%     -    0s
H    0     0                    853080.12500 851856.166  0.14%     -    0s
H    0     0                    852524.62500 851856.166  0.08%     -    0s
     0     0 851900.492    0    1 852524.625 851900.492  0.07%     -    0s
     0     0 851900.492    0    1 852524.625 851900.492  0.07%     -    0s
     0     0 852396.686    0    2 852524.625 852396.686  0.02%     -    0s

Cutting planes:
  Flow cover: 4

Explored 0 nodes (257 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.525246250000e+05, best bound 8.525246250000e+05, gap 0.0%