Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:19:20 2013

Optimize a model with 770 rows, 49070 columns and 98070 nonzeros
Presolve time: 0.07s
Presolved: 770 rows, 49070 columns, 98070 nonzeros
Variable types: 49000 continuous, 70 integer (70 binary)

Root relaxation: objective 8.461716e+04, 1889 iterations, 0.06 seconds

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

     0     0 84617.1599    0    9          - 84617.1599     -      -    0s
H    0     0                    88543.000000 84617.1599  4.43%     -    0s
H    0     0                    85109.000000 84617.1599  0.58%     -    0s
     0     0 84843.1314    0    6 85109.0000 84843.1314  0.31%     -    0s
     0     0 84864.5051    0    3 85109.0000 84864.5051  0.29%     -    0s
     0     0 84864.5051    0    9 85109.0000 84864.5051  0.29%     -    0s
     0     0 84864.5051    0    6 85109.0000 84864.5051  0.29%     -    0s
     0     0 84864.5051    0    3 85109.0000 84864.5051  0.29%     -    0s
     0     0 84869.1650    0    4 85109.0000 84869.1650  0.28%     -    0s
     0     0 84869.5184    0    5 85109.0000 84869.5184  0.28%     -    0s
     0     0 84869.5713    0    4 85109.0000 84869.5713  0.28%     -    1s
     0     0 84869.5713    0    4 85109.0000 84869.5713  0.28%     -    1s
     0     0 84869.5713    0    4 85109.0000 84869.5713  0.28%     -    1s
     0     2 84871.9397    0    4 85109.0000 84871.9397  0.28%     -    1s
H    6     3                    85030.025000 84913.0675  0.14%  36.2    1s
*    7     3               7    84974.000000 84913.0675  0.07%  39.7    1s

Cutting planes:
  Implied bound: 104
  Flow cover: 2

Explored 15 nodes (4620 simplex iterations) in 1.56 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.497400000000e+04, best bound 8.496719298246e+04, gap 0.0080%