Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:13:54 2013

Optimize a model with 3400 rows, 106200 columns and 216100 nonzeros
Presolve removed 200 rows and 300 columns
Presolve time: 0.53s
Presolved: 3200 rows, 105900 columns, 211800 nonzeros
Variable types: 104000 continuous, 1900 integer (1900 binary)

Root relaxation: objective 7.672886e+05, 7428 iterations, 0.68 seconds

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

     0     0 767288.564    0    3          - 767288.564     -      -    1s
     0     0 767325.680    0    2          - 767325.680     -      -    1s
     0     0 767325.680    0    2          - 767325.680     -      -    2s
     0     0 767325.680    0    2          - 767325.680     -      -    2s
     0     0 767325.680    0    2          - 767325.680     -      -    2s
     0     0 767325.680    0    2          - 767325.680     -      -    3s
     0     0 767325.680    0    2          - 767325.680     -      -    3s
H    0     0                    777448.83957 767325.680  1.30%     -    4s
     0     2 767333.927    0    2 777448.840 767333.927  1.30%     -    4s
     1     3 767626.484    1    1 777448.840 767626.484  1.26%   193    5s
*   18    10              17    768346.06878 767726.122  0.08%  65.7    6s
   109    23 768317.341    9    1 768346.069 768124.890  0.03%  25.9   10s

Cutting planes:
  Flow cover: 9

Explored 147 nodes (11521 simplex iterations) in 10.93 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.683460687757e+05, best bound 7.682749359725e+05, gap 0.0093%