Gurobi 5.0.1 (linux64) logging started Fri Jan 18 08:17:29 2013

Optimize a model with 1700 rows, 75650 columns and 651700 nonzeros
Presolve removed 50 rows and 50 columns
Presolve time: 0.91s
Presolved: 1650 rows, 75600 columns, 601650 nonzeros
Variable types: 75100 continuous, 500 integer (500 binary)

Root relaxation: objective 2.208160e+05, 2634 iterations, 0.16 seconds

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

     0     0 220815.985    0   12          - 220815.985     -      -    1s
     0     0 220818.136    0   12          - 220818.136     -      -    1s
     0     0 220819.174    0   14          - 220819.174     -      -    2s
     0     0 220819.571    0   16          - 220819.571     -      -    2s
     0     0 220819.903    0   16          - 220819.903     -      -    2s
     0     0 220820.046    0   16          - 220820.046     -      -    3s
     0     0 220820.046    0   16          - 220820.046     -      -    3s
     0     2 220823.662    0   16          - 220823.662     -      -    9s
    13    15 221315.183   12    3          - 220840.162     -   45.8   10s
    78    80 221521.576   76    1          - 220840.162     -   11.6   15s
*  157    53             155    221627.15751 220840.162  0.36%   6.6   18s
H  159    48                    221626.23480 220840.162  0.35%   6.6   18s
H  186    22                    221487.68643 221038.820  0.20%   8.1   19s
   196    29 221483.298   28    1 221487.686 221038.820  0.20%   7.9   20s
*  199    29              31    221483.30191 221038.820  0.20%   7.8   20s

Cutting planes:
  Flow cover: 13

Explored 264 nodes (6569 simplex iterations) in 22.92 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.214833019100e+05, best bound 2.214630548990e+05, gap 0.0091%