Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:08:06 2013

Optimize a model with 68 rows, 4160 columns and 52122 nonzeros
Presolve removed 22 rows and 126 columns
Presolve time: 0.31s
Presolved: 46 rows, 4034 columns, 48066 nonzeros
Variable types: 4014 continuous, 20 integer (20 binary)

Root relaxation: objective 7.659086e+03, 22 iterations, 0.00 seconds

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

     0     0 7659.08578    0    8          - 7659.08578     -      -    0s
     0     0 7659.42767    0    8          - 7659.42767     -      -    0s
     0     0 7659.42868    0    8          - 7659.42868     -      -    0s
     0     0 7659.42868    0    8          - 7659.42868     -      -    0s
H    0     0                    7674.4426270 7659.42868  0.20%     -    0s
     0     0 7664.60566    0    4 7674.44263 7664.60566  0.13%     -    0s
     0     0 7664.60712    0    4 7674.44263 7664.60712  0.13%     -    0s
     0     2 7664.63206    0    4 7674.44263 7664.63206  0.13%     -    0s
*   24    12              34    7664.6454486 7664.63472  0.00%   6.2    0s

Cutting planes:
  Gomory: 4

Explored 25 nodes (277 simplex iterations) in 0.79 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.664645448649e+03, best bound 7.664634718637e+03, gap 0.0001%