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

Optimize a model with 5488 rows, 1024 columns and 16896 nonzeros
Presolve removed 915 rows and 526 columns
Presolve time: 0.04s
Presolved: 4573 rows, 498 columns, 14183 nonzeros
Variable types: 16 continuous, 482 integer (482 binary)
Found heuristic solution: objective 21646.000000
Found heuristic solution: objective 20414.000000

Root relaxation: objective 1.500132e+04, 2733 iterations, 0.07 seconds

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

     0     0 15001.3241    0   10 20414.0000 15001.3241  26.5%     -    0s
H    0     0                    15025.000000 15001.3241  0.16%     -    0s
H    0     0                    15011.000000 15001.3241  0.06%     -    0s
     0     0 15002.0370    0   15 15011.0000 15002.0370  0.06%     -    0s
     0     0 15002.0370    0    9 15011.0000 15002.0370  0.06%     -    0s
H    0     0                    15010.000000 15002.0370  0.05%     -    0s
     0     0 15002.0370    0   12 15010.0000 15002.0370  0.05%     -    0s
     0     0 15002.0370    0   14 15010.0000 15002.0370  0.05%     -    0s
     0     2 15002.0713    0   14 15010.0000 15002.0713  0.05%     -    0s
H    4     3                    15008.000000 15002.0713  0.04%   3.2    0s
H   16    11                    15007.000000 15002.9066  0.03%  20.9    0s
*   46    12              30    15006.000000 15002.9066  0.02%  13.2    0s

Cutting planes:
  Gomory: 8
  Cover: 15
  Implied bound: 2
  MIR: 22
  Zero half: 9

Explored 86 nodes (4092 simplex iterations) in 0.28 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.500600000000e+04, best bound 1.500500000000e+04, gap 0.0067%