Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:28:42 2013

Optimize a model with 10140 rows, 11020 columns and 42010 nonzeros
Presolve removed 30 rows and 20 columns
Presolve time: 0.27s
Presolved: 10110 rows, 11000 columns, 31980 nonzeros
Variable types: 6010 continuous, 4990 integer (4990 binary)

Root relaxation: objective 1.791602e+04, 3625 iterations, 0.16 seconds

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

     0     0 17916.0191    0    3          - 17916.0191     -      -    0s
     0     0 17963.5567    0    4          - 17963.5567     -      -    0s
     0     0 17979.2750    0    4          - 17979.2750     -      -    0s
H    0     0                    17997.484177 17979.2750  0.10%     -    0s
     0     0 17979.5032    0    6 17997.4842 17979.5032  0.10%     -    0s
     0     0 17979.5032    0    3 17997.4842 17979.5032  0.10%     -    1s
     0     0 17979.5032    0    4 17997.4842 17979.5032  0.10%     -    1s
     0     0 17979.5032    0    4 17997.4842 17979.5032  0.10%     -    1s
     0     0 17979.5032    0    6 17997.4842 17979.5032  0.10%     -    1s
     0     0 17979.5099    0    5 17997.4842 17979.5099  0.10%     -    1s
     0     2 17979.5176    0    5 17997.4842 17979.5176  0.10%     -    1s
H   81    81                    17995.188302 17981.1559  0.08%   2.3    1s
H  108    85                    17984.741830 17981.1559  0.02%   2.4    1s
H  135    81                    17984.706749 17981.1559  0.02%   2.3    1s
*  146    82             145    17984.566328 17981.1559  0.02%   2.3    1s

Cutting planes:
  Flow cover: 6

Explored 209 nodes (5753 simplex iterations) in 1.79 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798456632766e+04, best bound 1.798278144084e+04, gap 0.0099%