Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:57:16 2013

Optimize a model with 726 rows, 43626 columns and 87186 nonzeros
Presolve time: 0.06s
Presolved: 726 rows, 43626 columns, 87186 nonzeros
Variable types: 43560 continuous, 66 integer (66 binary)

Root relaxation: objective 7.705636e+04, 1982 iterations, 0.06 seconds

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

     0     0 77056.3614    0    5          - 77056.3614     -      -    0s
H    0     0                    80853.000000 77056.3614  4.70%     -    0s
H    0     0                    79996.000000 77056.3614  3.67%     -    0s
H    0     0                    79134.000000 77056.3614  2.63%     -    0s
     0     0 77295.3088    0    2 79134.0000 77295.3088  2.32%     -    0s
     0     0 77311.8693    0    3 79134.0000 77311.8693  2.30%     -    0s
     0     0 77317.9525    0    2 79134.0000 77317.9525  2.29%     -    0s
     0     0 77317.9525    0    2 79134.0000 77317.9525  2.29%     -    0s
     0     0 77317.9525    0    2 79134.0000 77317.9525  2.29%     -    0s
     0     0 77319.4661    0    2 79134.0000 77319.4661  2.29%     -    0s
     0     0 77319.4661    0    2 79134.0000 77319.4661  2.29%     -    0s
     0     0 77319.4661    0    2 79134.0000 77319.4661  2.29%     -    0s
H    0     0                    77910.000000 77319.4661  0.76%     -    1s
     0     2 77391.9654    0    2 77910.0000 77391.9654  0.66%     -    1s
H    5     2                    77780.000000 77624.1075  0.20%   124    1s
H    7     4                    77710.000000 77648.4000  0.08%  97.0    1s
*    8     2               6    77670.000000 77648.4000  0.03%  89.5    1s

Cutting planes:
  Implied bound: 38
  Flow cover: 2

Explored 11 nodes (2892 simplex iterations) in 1.41 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.767000000000e+04, best bound 7.767000000000e+04, gap 0.0%