Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:02:20 2013

Optimize a model with 836 rows, 57836 columns and 115596 nonzeros
Presolve time: 0.08s
Presolved: 836 rows, 57836 columns, 115596 nonzeros
Variable types: 57760 continuous, 76 integer (76 binary)

Root relaxation: objective 7.819073e+04, 1833 iterations, 0.06 seconds

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

     0     0 78190.7291    0   14          - 78190.7291     -      -    0s
H    0     0                    83419.000000 78190.7291  6.27%     -    0s
H    0     0                    78816.000000 78190.7291  0.79%     -    0s
     0     0 78615.0897    0    8 78816.0000 78615.0897  0.25%     -    0s
     0     0 78615.0897    0   14 78816.0000 78615.0897  0.25%     -    0s
     0     0 78615.0897    0    8 78816.0000 78615.0897  0.25%     -    0s
     0     0 78632.5845    0    6 78816.0000 78632.5845  0.23%     -    0s
     0     0 78643.0291    0    7 78816.0000 78643.0291  0.22%     -    1s
     0     0 78645.3104    0    8 78816.0000 78645.3104  0.22%     -    1s
     0     0 78649.5653    0    8 78816.0000 78649.5653  0.21%     -    1s
     0     0 78651.1038    0    6 78816.0000 78651.1038  0.21%     -    1s
     0     0 78651.5324    0    7 78816.0000 78651.5324  0.21%     -    1s
     0     0 78651.5570    0    6 78816.0000 78651.5570  0.21%     -    1s
     0     0 78651.5570    0    6 78816.0000 78651.5570  0.21%     -    1s
H    0     0                    78800.000000 78651.5570  0.19%     -    1s
     0     2 78655.8344    0    6 78800.0000 78655.8344  0.18%     -    1s
*   49     3               8    78781.000000 78732.5882  0.06%  43.4    2s

Cutting planes:
  Implied bound: 267
  Flow cover: 19

Explored 54 nodes (6731 simplex iterations) in 2.65 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.878100000000e+04, best bound 7.878100000000e+04, gap 0.0%