Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:19 2013

Optimize a model with 56 rows, 570 columns and 4110 nonzeros
Presolve removed 22 rows and 136 columns
Presolve time: 0.01s
Presolved: 34 rows, 434 columns, 3666 nonzeros
Variable types: 420 continuous, 14 integer (14 binary)
Found heuristic solution: objective 5818.6764123

Root relaxation: objective 5.784077e+03, 19 iterations, 0.00 seconds

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

     0     0 5784.07688    0    4 5818.67641 5784.07688  0.59%     -    0s
     0     0 5789.11919    0    4 5818.67641 5789.11919  0.51%     -    0s
     0     0 5789.11919    0    4 5818.67641 5789.11919  0.51%     -    0s
     0     0 5809.74732    0    6 5818.67641 5809.74732  0.15%     -    0s
     0     2 5810.99491    0    6 5818.67641 5810.99491  0.13%     -    0s
H   10     8                    5817.1344851 5811.29942  0.10%   0.4    0s
*   16     7              16    5812.3255371 5812.32554   0.0%   7.0    0s

Cutting planes:
  Gomory: 4
  Flow cover: 2

Explored 17 nodes (189 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.812325537147e+03, best bound 5.812325537147e+03, gap 0.0%