Gurobi 5.0.1 (linux64) logging started Sat Dec  8 02:36:13 2012

Optimize a model with 825 rows, 810 columns and 2960 nonzeros
Presolve removed 83 rows and 24 columns
Presolve time: 0.00s
Presolved: 742 rows, 786 columns, 2810 nonzeros
Variable types: 700 continuous, 86 integer (86 binary)

Root relaxation: objective 3.317827e+04, 165 iterations, 0.00 seconds

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

     0     0 33178.2704    0   15          - 33178.2704     -      -    0s
H    0     0                    35433.000000 33178.2704  6.36%     -    0s
     0     0 33399.0226    0   25 35433.0000 33399.0226  5.74%     -    0s
     0     0 33433.8485    0   26 35433.0000 33433.8485  5.64%     -    0s
     0     0 33436.0018    0   26 35433.0000 33436.0018  5.64%     -    0s
     0     0 33437.8469    0   26 35433.0000 33437.8469  5.63%     -    0s
     0     0 33441.9259    0   27 35433.0000 33441.9259  5.62%     -    0s
H    0     0                    34648.000000 33441.9259  3.48%     -    0s
H    0     0                    34388.000000 33441.9259  2.75%     -    0s
     0     2 33446.6221    0   27 34388.0000 33446.6221  2.74%     -    0s
*   25    20              20    33874.000000 33595.9248  0.82%   4.3    0s
*  155    33              15    33870.000000 33758.4724  0.33%   4.4    0s

Cutting planes:
  Gomory: 3
  Cover: 1
  Flow cover: 13

Explored 268 nodes (1292 simplex iterations) in 0.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.387000000000e+04, best bound 3.386684013106e+04, gap 0.0093%