Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:55 2013

Optimize a model with 5070 rows, 5260 columns and 20505 nonzeros
Presolve removed 15 rows and 10 columns
Presolve time: 0.21s
Presolved: 5055 rows, 5250 columns, 15490 nonzeros
Variable types: 2755 continuous, 2495 integer (2495 binary)

Root relaxation: objective 1.174557e+04, 1910 iterations, 0.04 seconds

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

     0     0 11745.5748    0    1          - 11745.5748     -      -    0s
     0     0 11770.8641    0    2          - 11770.8641     -      -    0s
     0     0 11774.0600    0    3          - 11774.0600     -      -    0s
H    0     0                    11792.404659 11774.0600  0.16%     -    0s
H    0     0                    11779.771034 11774.0600  0.05%     -    0s
     0     0 11774.0600    0    1 11779.7710 11774.0600  0.05%     -    0s
     0     0 11774.0600    0    4 11779.7710 11774.0600  0.05%     -    0s
     0     0 11779.4040    0    2 11779.7710 11779.4040  0.00%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 4

Explored 0 nodes (2133 simplex iterations) in 0.44 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.177977103412e+04, best bound 1.177940400278e+04, gap 0.0031%