Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:34:27 2013

Optimize a model with 6579 rows, 1156 columns and 20230 nonzeros
Presolve removed 604 rows and 573 columns
Presolve time: 0.03s
Presolved: 5975 rows, 583 columns, 18638 nonzeros
Variable types: 23 continuous, 560 integer (560 binary)
Found heuristic solution: objective 20026.000000

Root relaxation: objective 1.263687e+04, 3849 iterations, 0.12 seconds

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

     0     0 12636.8667    0   16 20026.0000 12636.8667  36.9%     -    0s
H    0     0                    12656.000000 12636.8667  0.15%     -    0s
H    0     0                    12651.000000 12636.8667  0.11%     -    0s
     0     0 12636.8667    0   20 12651.0000 12636.8667  0.11%     -    0s
     0     0 12636.8667    0   12 12651.0000 12636.8667  0.11%     -    0s
H    0     0                    12644.000000 12636.8667  0.06%     -    0s
     0     0 12636.9516    0   36 12644.0000 12636.9516  0.06%     -    0s
     0     1 12636.9960    0   36 12644.0000 12636.9960  0.06%     -    0s
*  586    91              32    12643.000000 12640.8083  0.02%  11.7    0s

Cutting planes:
  Gomory: 7
  Cover: 9
  Implied bound: 3
  MIR: 51
  Zero half: 19

Explored 837 nodes (13243 simplex iterations) in 0.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.264300000000e+04, best bound 1.264200000000e+04, gap 0.0079%