Gurobi 5.0.1 (linux64) logging started Sun Dec  9 10:43:41 2012

Optimize a model with 3000 rows, 2970 columns and 11329 nonzeros
Presolve removed 114 rows and 22 columns
Presolve time: 0.02s
Presolved: 2886 rows, 2948 columns, 11099 nonzeros
Variable types: 2771 continuous, 177 integer (177 binary)

Root relaxation: objective 5.859614e+04, 320 iterations, 0.00 seconds

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

     0     0 58596.1444    0   22          - 58596.1444     -      -    0s
H    0     0                    62153.000000 58596.1444  5.72%     -    0s
H    0     0                    60367.000000 58596.1444  2.93%     -    0s
     0     0 58675.5949    0   41 60367.0000 58675.5949  2.80%     -    0s
     0     0 58685.9997    0   42 60367.0000 58685.9997  2.78%     -    0s
     0     0 58693.9945    0   45 60367.0000 58693.9945  2.77%     -    0s
     0     0 58697.3343    0   45 60367.0000 58697.3343  2.77%     -    0s
     0     0 58697.3671    0   46 60367.0000 58697.3671  2.77%     -    0s
     0     0 58697.4570    0   45 60367.0000 58697.4570  2.77%     -    0s
H    0     0                    60187.000000 58697.4570  2.47%     -    0s
H    0     0                    60173.000000 58697.4570  2.45%     -    0s
     0     2 58700.9299    0   45 60173.0000 58700.9299  2.45%     -    0s
H   54    36                    59684.000000 58811.9978  1.46%   5.8    0s
H  189    95                    59559.000000 59044.1462  0.86%   7.5    0s
H  245   116                    59538.000000 59059.6763  0.80%   7.6    0s
H 1155   166                    59523.000000 59277.5344  0.41%   7.6    1s

Cutting planes:
  Gomory: 3
  Flow cover: 12

Explored 1867 nodes (12496 simplex iterations) in 2.26 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.952300000000e+04, best bound 5.951710851567e+04, gap 0.0099%