Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:00:45 2013

Optimize a model with 30 rows, 25 columns and 80 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.00s
Presolved: 20 rows, 15 columns, 60 nonzeros
Variable types: 5 continuous, 10 integer (10 binary)

Root relaxation: objective 2.550000e+02, 10 iterations, 0.00 seconds

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

     0     0  255.00000    0   10          -  255.00000     -      -    0s
H    0     0                     879.0000000  255.00000  71.0%     -    0s
H    0     0                     821.0000000  255.00000  68.9%     -    0s
     0     0  385.74766    0    8  821.00000  385.74766  53.0%     -    0s
     0     0  385.74766    0    8  821.00000  385.74766  53.0%     -    0s
     0     2  388.34503    0    8  821.00000  388.34503  52.7%     -    0s
*    7     7               5     726.0000000  388.34503  46.5%   3.4    0s
*   13     6               7     717.0000000  388.34503  45.8%   2.8    0s
*   22    11               6     716.0000000  446.00000  37.7%   3.2    0s
*   27    10               7     699.0000000  446.00000  36.2%   3.0    0s
*   36    13               7     681.0000000  489.00000  28.2%   2.7    0s
*   39    10               5     672.0000000  489.00000  27.2%   2.6    0s
*   50     9               7     658.0000000  541.00000  17.8%   2.5    0s

Cutting planes:
  Gomory: 1
  MIR: 19

Explored 81 nodes (243 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.580000000000e+02, best bound 6.580000000000e+02, gap 0.0%