Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:04:27 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 2.199252e+04, 139 iterations, 0.00 seconds

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

     0     0 21992.5209    0   10          - 21992.5209     -      -    0s
     0     0 21993.2320    0   10          - 21993.2320     -      -    0s
     0     0 22061.4730    0    9          - 22061.4730     -      -    0s
     0     0 22061.4730    0    9          - 22061.4730     -      -    0s
     0     2 22064.7579    0    9          - 22064.7579     -      -    0s
*   55    47              44    22372.764252 22064.7994  1.38%   4.2    0s
*   68    16              12    22146.620586 22065.1145  0.37%   3.9    0s
*   69    15              12    22144.872010 22065.1145  0.36%   3.9    0s
*   98    20              10    22142.113350 22088.7217  0.24%   3.4    0s
*  137    12               8    22136.466242 22128.0143  0.04%   3.2    0s

Cutting planes:
  Flow cover: 2

Explored 153 nodes (871 simplex iterations) in 0.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.213646624224e+04, best bound 2.213433078972e+04, gap 0.0096%