Gurobi 5.0.1 (linux64) logging started Sat Dec  8 02:36:15 2012

Optimize a model with 285 rows, 270 columns and 889 nonzeros
Presolve removed 22 rows and 13 columns
Presolve time: 0.00s
Presolved: 263 rows, 257 columns, 870 nonzeros
Variable types: 171 continuous, 86 integer (86 binary)

Root relaxation: objective 2.600020e+04, 145 iterations, 0.00 seconds

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

     0     0 26000.2042    0   41          - 26000.2042     -      -    0s
     0     0 30283.1049    0   27          - 30283.1049     -      -    0s
     0     0 30532.4679    0   23          - 30532.4679     -      -    0s
     0     0 30542.2997    0   24          - 30542.2997     -      -    0s
     0     0 30558.9013    0   24          - 30558.9013     -      -    0s
     0     2 30561.4524    0   24          - 30561.4524     -      -    0s
H 2147   560                    33015.000000 31356.9176  5.02%  13.6    1s
H 2147   558                    33012.000000 31356.9176  5.01%  13.6    1s
H 3653   990                    32762.000000 31614.6483  3.50%  13.4    2s
H 4107  1100                    32719.000000 31662.8581  3.23%  13.4    2s
* 4108  1095              52    32716.000000 31662.8581  3.22%  13.4    2s
  9140  1852 32389.5709   27   28 32716.0000 32066.9777  1.98%  13.1    5s

Cutting planes:
  Gomory: 19
  Cover: 12
  Implied bound: 4
  MIR: 1
  Flow cover: 107
  Flow path: 49

Explored 19332 nodes (227846 simplex iterations) in 9.33 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.271600000000e+04, best bound 3.271276946025e+04, gap 0.0099%