Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:04:32 2013

Optimize a model with 300 rows, 6220 columns and 46170 nonzeros
Presolve removed 10 rows and 1130 columns
Presolve time: 0.07s
Presolved: 290 rows, 5090 columns, 42170 nonzeros
Variable types: 5010 continuous, 80 integer (80 binary)

Root relaxation: objective 2.162324e+04, 176 iterations, 0.00 seconds

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

     0     0 21623.2446    0   10          - 21623.2446     -      -    0s
     0     0 21623.8602    0   10          - 21623.8602     -      -    0s
     0     0 21623.8602    0   10          - 21623.8602     -      -    0s
H    0     0                    22945.934334 21623.8602  5.76%     -    0s
     0     2 21623.8602    0   10 22945.9343 21623.8602  5.76%     -    0s
*   19    17              17    21794.236035 21742.2044  0.24%   8.4    0s
H   27    18                    21791.642293 21742.2044  0.23%   6.3    0s
*   41    19              14    21759.797700 21744.4566  0.07%   5.3    0s
*   66    16              14    21759.485551 21748.8096  0.05%   4.2    0s
*  113    19              17    21759.468587 21752.7598  0.03%   3.3    0s

Cutting planes:
  Flow cover: 2

Explored 121 nodes (749 simplex iterations) in 0.49 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.175946858677e+04, best bound 2.175771493933e+04, gap 0.0081%