Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:53:32 2013

Optimize a model with 14234 rows, 1936 columns and 43560 nonzeros
Presolve removed 1858 rows and 995 columns
Presolve time: 0.09s
Presolved: 12376 rows, 941 columns, 37825 nonzeros
Variable types: 17 continuous, 924 integer (924 binary)
Found heuristic solution: objective 36657.000000

Root relaxation: objective 2.883065e+04, 4817 iterations, 0.21 seconds

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

     0     0 28830.6500    0   15 36657.0000 28830.6500  21.4%     -    0s
H    0     0                    28849.000000 28830.6500  0.06%     -    0s
H    0     0                    28842.000000 28830.6500  0.04%     -    0s
     0     0 28831.0000    0   11 28842.0000 28831.0000  0.04%     -    0s
     0     0 28831.0000    0    8 28842.0000 28831.0000  0.04%     -    0s
H    0     0                    28837.000000 28831.0000  0.02%     -    0s
     0     0 28831.0000    0   15 28837.0000 28831.0000  0.02%     -    0s
     0     1 28831.0000    0   15 28837.0000 28831.0000  0.02%     -    0s
H  396    78                    28835.000000 28832.1316  0.01%  17.5    0s

Cutting planes:
  Gomory: 11
  Cover: 9
  MIR: 42
  Zero half: 10

Explored 396 nodes (12298 simplex iterations) in 0.91 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.883500000000e+04, best bound 2.883300000000e+04, gap 0.0069%