Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:49 2013

Optimize a model with 260 rows, 1590 columns and 6220 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.01s
Presolved: 250 rows, 1580 columns, 5710 nonzeros
Variable types: 1520 continuous, 60 integer (60 binary)

Root relaxation: objective 1.836170e+04, 113 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    3          - 18361.7044     -      -    0s
     0     0 18362.7707    0    3          - 18362.7707     -      -    0s
     0     0 18362.7707    0    3          - 18362.7707     -      -    0s
H    0     0                    18788.407143 18362.7707  2.27%     -    0s
     0     1 18394.8400    0    3 18788.4071 18394.8400  2.09%     -    0s
*   11     5              11    18418.241613 18416.9532  0.01%   8.3    0s

Cutting planes:
  Flow cover: 1

Explored 12 nodes (300 simplex iterations) in 0.08 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.841824161337e+04, best bound 1.841695318317e+04, gap 0.0070%