Gurobi 5.0.1 (linux64) logging started Sat Dec  8 02:35:13 2012

Optimize a model with 285 rows, 270 columns and 887 nonzeros
Presolve removed 32 rows and 19 columns
Presolve time: 0.00s
Presolved: 253 rows, 251 columns, 811 nonzeros
Variable types: 167 continuous, 84 integer (84 binary)

Root relaxation: objective 2.408135e+04, 115 iterations, 0.00 seconds

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

     0     0 24081.3470    0   32          - 24081.3470     -      -    0s
H    0     0                    34190.000000 24081.3470  29.6%     -    0s
     0     0 28278.5458    0    5 34190.0000 28278.5458  17.3%     -    0s
     0     0 28316.1129    0    3 34190.0000 28316.1129  17.2%     -    0s
     0     0 28316.1803    0    2 34190.0000 28316.1803  17.2%     -    0s
H    0     0                    28599.000000 28316.1803  0.99%     -    0s
     0     2 28321.3118    0    2 28599.0000 28321.3118  0.97%     -    0s
H   14     1                    28401.000000 28321.3118  0.28%   2.1    0s
*   15     1               2    28375.000000 28350.0337  0.09%   2.2    0s

Cutting planes:
  Gomory: 8
  Flow cover: 20
  Flow path: 10

Explored 17 nodes (199 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.837500000000e+04, best bound 2.837500000000e+04, gap 0.0%