Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:24:29 2013

Optimize a model with 33117 rows, 32547 columns and 130017 nonzeros
Presolve removed 2643 rows and 0 columns
Presolve time: 0.18s
Presolved: 30474 rows, 32547 columns, 124731 nonzeros
Variable types: 32490 continuous, 57 integer (57 binary)

Root relaxation: objective 7.030824e+04, 7316 iterations, 0.88 seconds

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

     0     0 70308.2406    0    2          - 70308.2406     -      -    1s
H    0     0                    70734.000000 70308.2406  0.60%     -    1s
H    0     0                    70511.000000 70308.2406  0.29%     -    1s
H    0     0                    70399.000000 70308.2406  0.13%     -    1s
     0     0 70309.7532    0    3 70399.0000 70309.7532  0.13%     -    1s
     0     0 70309.7532    0    3 70399.0000 70309.7532  0.13%     -    1s
     0     0 70387.6216    0    1 70399.0000 70387.6216  0.02%     -    1s
     0     0 70390.3750    0    1 70399.0000 70390.3750  0.01%     -    1s
*    0     0               0    70391.000000 70391.0000   0.0%     -    1s

Cutting planes:
  Flow cover: 1

Explored 0 nodes (7435 simplex iterations) in 1.96 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.039100000000e+04, best bound 7.039100000000e+04, gap 0.0%