Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:19:37 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 8.073787e+04, 1926 iterations, 0.06 seconds

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

     0     0 80737.8724    0    3          - 80737.8724     -      -    0s
H    0     0                    81774.000000 80737.8724  1.27%     -    0s
     0     0 80786.3236    0    2 81774.0000 80786.3236  1.21%     -    0s
     0     0 80786.3236    0    3 81774.0000 80786.3236  1.21%     -    0s
     0     0 80788.8836    0    2 81774.0000 80788.8836  1.20%     -    0s
     0     0 80800.3418    0    2 81774.0000 80800.3418  1.19%     -    0s
     0     0 80801.5178    0    2 81774.0000 80801.5178  1.19%     -    0s
     0     0 80801.8656    0    2 81774.0000 80801.8656  1.19%     -    0s
     0     2 80806.2200    0    2 81774.0000 80806.2200  1.18%     -    0s
H    5     5                    81594.000000 80882.3333  0.87%  24.4    1s
H    9     6                    81361.000000 80888.6438  0.58%  30.9    1s
H   10     7                    81331.000000 80888.6438  0.54%  31.4    1s
*   11     6              10    81325.000000 80888.6438  0.54%  29.4    1s
*   22     7              10    81318.000000 80970.0000  0.43%  47.5    1s
*   23     5              10    81306.000000 80970.0000  0.41%  46.2    1s
H   25     3                    81254.386667 80970.0000  0.35%  42.6    1s
H   27     5                    81179.000000 80990.4474  0.23%  45.0    1s

Cutting planes:
  Implied bound: 70
  Flow cover: 5

Explored 49 nodes (5546 simplex iterations) in 1.60 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.117900000000e+04, best bound 8.117900000000e+04, gap 0.0%