Gurobi 5.0.1 (linux64) logging started Tue Dec 11 04:08:49 2012

Optimize a model with 11910 rows, 11880 columns and 45293 nonzeros
Presolve removed 452 rows and 110 columns
Presolve time: 0.07s
Presolved: 11458 rows, 11770 columns, 44369 nonzeros
Variable types: 11061 continuous, 709 integer (709 binary)

Root relaxation: objective 2.313092e+05, 1088 iterations, 0.02 seconds

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

     0     0 231309.157    0   20          - 231309.157     -      -    0s
H    0     0                    234292.00000 231309.157  1.27%     -    0s
H    0     0                    232565.00000 231309.157  0.54%     -    0s
     0     0 231332.921    0   36 232565.000 231332.921  0.53%     -    0s
     0     0 231343.664    0   38 232565.000 231343.664  0.53%     -    0s
     0     0 231345.859    0   35 232565.000 231345.859  0.52%     -    0s
     0     0 231347.550    0   34 232565.000 231347.550  0.52%     -    0s
     0     2 231352.930    0   34 232565.000 231352.930  0.52%     -    0s
H   27    24                    231560.00000 231372.290  0.08%   4.0    0s
H   37    29                    231493.00000 231372.290  0.05%   3.5    0s
*   38    24              34    231463.00000 231372.290  0.04%   3.6    0s
*   80    25              28    231428.00000 231390.729  0.02%   3.2    0s
*   85    20              31    231421.00000 231390.729  0.01%   3.2    0s

Cutting planes:
  Gomory: 5
  Flow cover: 15

Explored 95 nodes (1463 simplex iterations) in 0.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.314210000000e+05, best bound 2.313983120425e+05, gap 0.0098%