Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:10:36 2013

Optimize a model with 847 rows, 59367 columns and 118657 nonzeros
Presolve time: 0.09s
Presolved: 847 rows, 59367 columns, 118657 nonzeros
Variable types: 59290 continuous, 77 integer (77 binary)

Root relaxation: objective 8.790328e+04, 2308 iterations, 0.07 seconds

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

     0     0 87903.2798    0    4          - 87903.2798     -      -    0s
H    0     0                    88756.000000 87903.2798  0.96%     -    0s
H    0     0                    88167.000000 87903.2798  0.30%     -    0s
     0     0 88136.9057    0    3 88167.0000 88136.9057  0.03%     -    0s
     0     0 88136.9057    0    4 88167.0000 88136.9057  0.03%     -    0s
     0     0 88136.9057    0    3 88167.0000 88136.9057  0.03%     -    0s
     0     0 88140.5119    0    2 88167.0000 88140.5119  0.03%     -    0s
     0     0 88143.1790    0    4 88167.0000 88143.1790  0.03%     -    0s
     0     0 88146.4929    0    2 88167.0000 88146.4929  0.02%     -    0s
     0     0 88146.7578    0    3 88167.0000 88146.7578  0.02%     -    0s
     0     0 88146.7717    0    2 88167.0000 88146.7717  0.02%     -    1s
     0     0 88157.2951    0    2 88167.0000 88157.2951  0.01%     -    1s
     0     0 88161.5000    0    1 88167.0000 88161.5000  0.01%     -    1s

Cutting planes:
  Implied bound: 71
  Flow cover: 2

Explored 0 nodes (4401 simplex iterations) in 1.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.816700000000e+04, best bound 8.816150000000e+04, gap 0.0062%