Gurobi 5.0.1 (linux64) logging started Sun Dec  9 06:11:48 2012

Optimize a model with 3000 rows, 2970 columns and 11327 nonzeros
Presolve removed 147 rows and 27 columns
Presolve time: 0.02s
Presolved: 2853 rows, 2943 columns, 11016 nonzeros
Variable types: 2767 continuous, 176 integer (176 binary)

Root relaxation: objective 5.772460e+04, 270 iterations, 0.00 seconds

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

     0     0 57724.6040    0    7          - 57724.6040     -      -    0s
H    0     0                    58647.000000 57724.6040  1.57%     -    0s
     0     0 57755.3144    0   13 58647.0000 57755.3144  1.52%     -    0s
H    0     0                    58494.000000 57755.3144  1.26%     -    0s
     0     0 57765.7860    0   13 58494.0000 57765.7860  1.24%     -    0s
     0     0 57768.2500    0   14 58494.0000 57768.2500  1.24%     -    0s
     0     0 57768.7527    0   14 58494.0000 57768.7527  1.24%     -    0s
     0     0 57770.1886    0   13 58494.0000 57770.1886  1.24%     -    0s
H    0     0                    58480.000000 57770.1886  1.21%     -    0s
     0     2 57770.8633    0   13 58480.0000 57770.8633  1.21%     -    0s
*    9     6               9    57897.000000 57850.7665  0.08%   3.8    0s

Cutting planes:
  Gomory: 4
  Flow cover: 6

Explored 14 nodes (335 simplex iterations) in 0.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.789700000000e+04, best bound 5.789700000000e+04, gap 0.0%