Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:37:15 2013

Optimize a model with 671 rows, 37271 columns and 74481 nonzeros
Presolve time: 0.05s
Presolved: 671 rows, 37271 columns, 74481 nonzeros
Variable types: 37210 continuous, 61 integer (61 binary)

Root relaxation: objective 7.089407e+04, 1695 iterations, 0.04 seconds

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

     0     0 70894.0717    0   10          - 70894.0717     -      -    0s
H    0     0                    73628.000000 70894.0717  3.71%     -    0s
H    0     0                    72176.000000 70894.0717  1.78%     -    0s
     0     0 71221.4150    0    5 72176.0000 71221.4150  1.32%     -    0s
     0     0 71240.9079    0    6 72176.0000 71240.9079  1.30%     -    0s
     0     0 71242.5024    0    6 72176.0000 71242.5024  1.29%     -    0s
     0     0 71246.1273    0    6 72176.0000 71246.1273  1.29%     -    0s
     0     0 71246.1702    0    5 72176.0000 71246.1702  1.29%     -    0s
     0     0 71246.2551    0    5 72176.0000 71246.2551  1.29%     -    0s
     0     0 71246.3267    0    4 72176.0000 71246.3267  1.29%     -    0s
     0     0 71246.3267    0    4 72176.0000 71246.3267  1.29%     -    0s
     0     2 71247.1299    0    4 72176.0000 71247.1299  1.29%     -    0s
H    5     5                    71658.600000 71338.5117  0.45%  55.4    1s
H    7     5                    71492.000000 71338.5117  0.21%  46.9    1s
H    8     5                    71454.074074 71338.5117  0.16%  44.2    1s
*    9     5               7    71443.000000 71338.5117  0.15%  44.6    1s

Cutting planes:
  Implied bound: 102
  Flow cover: 6

Explored 15 nodes (2642 simplex iterations) in 1.15 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.144300000000e+04, best bound 7.144300000000e+04, gap 0.0%