Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:19:13 2013

Optimize a model with 858 rows, 60918 columns and 121758 nonzeros
Presolve time: 0.09s
Presolved: 858 rows, 60918 columns, 121758 nonzeros
Variable types: 60840 continuous, 78 integer (78 binary)

Root relaxation: objective 8.591402e+04, 2243 iterations, 0.08 seconds

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

     0     0 85914.0191    0    8          - 85914.0191     -      -    0s
H    0     0                    91923.000000 85914.0191  6.54%     -    0s
H    0     0                    86219.000000 85914.0191  0.35%     -    0s
     0     0 86002.8995    0    6 86219.0000 86002.8995  0.25%     -    0s
     0     0 86002.8995    0    8 86219.0000 86002.8995  0.25%     -    0s
     0     0 86003.0007    0    6 86219.0000 86003.0007  0.25%     -    0s
     0     0 86025.9619    0    5 86219.0000 86025.9619  0.22%     -    0s
     0     0 86036.7406    0    5 86219.0000 86036.7406  0.21%     -    0s
     0     0 86040.3695    0    5 86219.0000 86040.3695  0.21%     -    0s
     0     0 86041.0848    0    5 86219.0000 86041.0848  0.21%     -    1s
     0     0 86041.6263    0    5 86219.0000 86041.6263  0.21%     -    1s
     0     0 86041.6263    0    5 86219.0000 86041.6263  0.21%     -    1s
     0     2 86044.2494    0    5 86219.0000 86044.2494  0.20%     -    1s
*   16     5               4    86132.000000 86092.7910  0.05%  28.1    1s

Cutting planes:
  Implied bound: 46
  Flow cover: 9

Explored 25 nodes (4338 simplex iterations) in 1.64 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.613200000000e+04, best bound 8.613200000000e+04, gap 0.0%