Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:46:27 2013

Optimize a model with 814 rows, 54834 columns and 109594 nonzeros
Presolve time: 0.08s
Presolved: 814 rows, 54834 columns, 109594 nonzeros
Variable types: 54760 continuous, 74 integer (74 binary)

Root relaxation: objective 7.783067e+04, 1980 iterations, 0.07 seconds

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

     0     0 77830.6718    0    5          - 77830.6718     -      -    0s
H    0     0                    83176.000000 77830.6718  6.43%     -    0s
     0     0 78111.6869    0    4 83176.0000 78111.6869  6.09%     -    0s
H    0     0                    81387.413665 78111.6869  4.02%     -    0s
H    0     0                    81143.000000 78111.6869  3.74%     -    0s
     0     0 78130.8422    0    5 81143.0000 78130.8422  3.71%     -    0s
H    0     0                    81082.000000 78130.8422  3.64%     -    0s
     0     0 78133.7057    0    4 81082.0000 78133.7057  3.64%     -    0s
     0     0 78133.7057    0    4 81082.0000 78133.7057  3.64%     -    0s
     0     0 78134.5668    0    4 81082.0000 78134.5668  3.64%     -    0s
     0     0 78134.5668    0    4 81082.0000 78134.5668  3.64%     -    0s
     0     0 78134.5668    0    4 81082.0000 78134.5668  3.64%     -    1s
     0     0 78134.7890    0    4 81082.0000 78134.7890  3.63%     -    1s
H    0     0                    78665.000000 78134.7890  0.67%     -    1s
     0     0 78134.7890    0    5 78665.0000 78134.7890  0.67%     -    1s
     0     0 78134.7890    0    4 78665.0000 78134.7890  0.67%     -    1s
     0     0 78134.7890    0    5 78665.0000 78134.7890  0.67%     -    1s
     0     0 78134.8253    0    4 78665.0000 78134.8253  0.67%     -    1s
     0     0 78134.8253    0    4 78665.0000 78134.8253  0.67%     -    1s
     0     0 78134.8253    0    4 78665.0000 78134.8253  0.67%     -    1s
     0     0 78135.0475    0    3 78665.0000 78135.0475  0.67%     -    1s
     0     2 78141.4592    0    3 78665.0000 78141.4592  0.67%     -    2s
H    6     6                    78635.000000 78227.4560  0.52%  43.7    2s
*   16     8              12    78552.000000 78227.4560  0.41%  47.1    2s
*   40     9              10    78544.000000 78352.7500  0.24%  52.0    2s
*   46     5              10    78500.000000 78404.7656  0.12%  49.8    2s
*   52     1               9    78427.000000 78411.0000  0.02%  48.0    2s
*   53     0               9    78411.000000 78411.0000   0.0%  47.4    2s

Cutting planes:
  Implied bound: 110
  Flow cover: 6

Explored 54 nodes (6580 simplex iterations) in 2.99 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.841100000000e+04, best bound 7.841100000000e+04, gap 0.0%