Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:06:13 2013

Optimize a model with 5400 rows, 104200 columns and 216100 nonzeros
Presolve removed 300 rows and 200 columns
Presolve time: 0.50s
Presolved: 5100 rows, 104000 columns, 211800 nonzeros
Variable types: 102100 continuous, 1900 integer (1900 binary)

Root relaxation: objective 9.188392e+05, 10886 iterations, 0.96 seconds

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

     0     0 918839.221    0    4          - 918839.221     -      -    1s
     0     0 918947.334    0    4          - 918947.334     -      -    2s
     0     0 918994.637    0    3          - 918994.637     -      -    2s
     0     0 918999.094    0    3          - 918999.094     -      -    2s
     0     0 919000.255    0    2          - 919000.255     -      -    2s
     0     0 919000.846    0    2          - 919000.846     -      -    3s
     0     0 919001.305    0    2          - 919001.305     -      -    3s
     0     0 919001.957    0    2          - 919001.957     -      -    3s
     0     0 919002.337    0    3          - 919002.337     -      -    3s
H    0     0                    943047.34676 919002.337  2.55%     -    5s
     0     2 919005.035    0    3 943047.347 919005.035  2.55%     -    5s
H    9     9                    919382.57352 919075.374  0.03%   113    7s
*   17     8              15    919371.65559 919075.374  0.03%  90.5    8s

Cutting planes:
  Flow cover: 18

Explored 24 nodes (13385 simplex iterations) in 8.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.193716555880e+05, best bound 9.193060312776e+05, gap 0.0071%