Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:41:23 2013

Optimize a model with 340 rows, 11130 columns and 122340 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.29s
Presolved: 330 rows, 11120 columns, 112330 nonzeros
Variable types: 11020 continuous, 100 integer (100 binary)

Root relaxation: objective 1.791602e+04, 146 iterations, 0.01 seconds

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

     0     0 17916.0191    0    9          - 17916.0191     -      -    0s
     0     0 17916.1263    0    9          - 17916.1263     -      -    0s
     0     0 17916.1506    0    9          - 17916.1506     -      -    0s
     0     0 17916.1871    0    9          - 17916.1871     -      -    0s
     0     0 17916.1871    0    9          - 17916.1871     -      -    0s
     0     2 17916.7636    0    9          - 17916.7636     -      -    2s
*   34    17              33    17995.907345 17919.6851  0.42%   4.4    2s
*   50    22              14    17984.741962 17926.0560  0.33%   4.2    2s
*   70    26              17    17984.687348 17942.3635  0.24%   3.8    2s
*   73    25              16    17984.553298 17942.3635  0.23%   3.7    2s
*   99    25              18    17984.416670 17966.5787  0.10%   3.8    2s
*  146    22              18    17984.236722 17979.3317  0.03%   3.7    2s
*  151    20              19    17984.225346 17979.3317  0.03%   3.6    2s

Cutting planes:
  Flow cover: 3

Explored 166 nodes (849 simplex iterations) in 2.55 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798422534579e+04, best bound 1.798317865827e+04, gap 0.0058%