Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:47:01 2013

Optimize a model with 280 rows, 3650 columns and 22150 nonzeros
Presolve removed 10 rows and 570 columns
Presolve time: 0.03s
Presolved: 270 rows, 3080 columns, 20150 nonzeros
Variable types: 3010 continuous, 70 integer (70 binary)

Root relaxation: objective 1.836170e+04, 116 iterations, 0.00 seconds

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

     0     0 18361.7044    0    4          - 18361.7044     -      -    0s
     0     0 18362.2378    0    4          - 18362.2378     -      -    0s
     0     0 18381.2294    0    4          - 18381.2294     -      -    0s
     0     0 18394.8305    0   15          - 18394.8305     -      -    0s
     0     0 18394.8305    0   15          - 18394.8305     -      -    0s
H    0     0                    19086.630993 18394.8305  3.62%     -    0s
     0     0 18414.4344    0    6 19086.6310 18414.4344  3.52%     -    0s
     0     0 18414.5117    0   12 19086.6310 18414.5117  3.52%     -    0s
     0     0 18414.5117    0   12 19086.6310 18414.5117  3.52%     -    0s
     0     2 18414.5117    0   12 19086.6310 18414.5117  3.52%     -    0s
*   14     7              11    18424.376047 18414.5117  0.05%   7.4    0s
*   15     6              11    18424.349285 18414.5117  0.05%   6.9    0s
*   26     9               9    18418.263500 18416.3306  0.01%   4.8    0s

Cutting planes:
  Gomory: 2
  Flow cover: 1

Explored 39 nodes (786 simplex iterations) in 0.33 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.841826350024e+04, best bound 1.841649452142e+04, gap 0.0096%