Gurobi 5.0.1 (linux64) logging started Sun Dec  9 06:11:52 2012

Optimize a model with 3000 rows, 2970 columns and 11329 nonzeros
Presolve removed 115 rows and 22 columns
Presolve time: 0.02s
Presolved: 2885 rows, 2948 columns, 11087 nonzeros
Variable types: 2771 continuous, 177 integer (177 binary)

Root relaxation: objective 5.700834e+04, 278 iterations, 0.00 seconds

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

     0     0 57008.3358    0   10          - 57008.3358     -      -    0s
H    0     0                    58316.000000 57008.3358  2.24%     -    0s
     0     0 57016.4435    0   15 58316.0000 57016.4435  2.23%     -    0s
     0     0 57019.9185    0   17 58316.0000 57019.9185  2.22%     -    0s
     0     0 57020.8129    0   18 58316.0000 57020.8129  2.22%     -    0s
     0     0 57022.2950    0   19 58316.0000 57022.2950  2.22%     -    0s
     0     0 57022.3209    0   19 58316.0000 57022.3209  2.22%     -    0s
     0     0 57022.5519    0   19 58316.0000 57022.5519  2.22%     -    0s
H    0     0                    57202.000000 57022.5519  0.31%     -    0s
     0     0 57022.5519    0   10 57202.0000 57022.5519  0.31%     -    0s
     0     0 57022.5519    0   24 57202.0000 57022.5519  0.31%     -    0s
     0     0 57024.3083    0   25 57202.0000 57024.3083  0.31%     -    0s
     0     2 57036.8490    0   25 57202.0000 57036.8490  0.29%     -    0s
*    9     6               9    57109.000000 57072.8864  0.06%   2.9    0s

Cutting planes:
  Gomory: 2
  Flow cover: 9

Explored 16 nodes (565 simplex iterations) in 0.21 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.710900000000e+04, best bound 5.710900000000e+04, gap 0.0%