Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:01:11 2013

Optimize a model with 4525 rows, 900 columns and 13950 nonzeros
Presolve removed 713 rows and 460 columns
Presolve time: 0.04s
Presolved: 3812 rows, 440 columns, 11839 nonzeros
Variable types: 15 continuous, 425 integer (425 binary)
Found heuristic solution: objective 17134.000000

Root relaxation: objective 1.183754e+04, 2822 iterations, 0.08 seconds

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

     0     0 11837.5385    0   10 17134.0000 11837.5385  30.9%     -    0s
H    0     0                    11861.000000 11837.5385  0.20%     -    0s
H    0     0                    11857.000000 11837.5385  0.16%     -    0s
     0     0 11838.0000    0   18 11857.0000 11838.0000  0.16%     -    0s
     0     0 11838.0000    0   11 11857.0000 11838.0000  0.16%     -    0s
H    0     0                    11848.000000 11838.0000  0.08%     -    0s
     0     0 11838.0000    0   16 11848.0000 11838.0000  0.08%     -    0s
     0     2 11838.1305    0   11 11848.0000 11838.1305  0.08%     -    0s
H    1     2                    11846.000000 11838.1305  0.07%  61.0    0s

Cutting planes:
  Gomory: 3
  Cover: 2
  Implied bound: 1
  MIR: 20
  Zero half: 8

Explored 39 nodes (5209 simplex iterations) in 0.38 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.184600000000e+04, best bound 1.184500000000e+04, gap 0.0084%