Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:08:41 2013

Optimize a model with 4991 rows, 961 columns and 15376 nonzeros
Presolve removed 1162 rows and 511 columns
Presolve time: 0.04s
Presolved: 3829 rows, 450 columns, 11794 nonzeros
Variable types: 11 continuous, 439 integer (439 binary)
Found heuristic solution: objective 19703.000000

Root relaxation: objective 1.553334e+04, 1547 iterations, 0.04 seconds

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

     0     0 15533.3407    0    4 19703.0000 15533.3407  21.2%     -    0s
H    0     0                    15536.000000 15533.3407  0.02%     -    0s
     0     0 15533.9167    0    5 15536.0000 15533.9167  0.01%     -    0s
     0     0 15534.0659    0    4 15536.0000 15534.0659  0.01%     -    0s
     0     0     cutoff    0      15536.0000 15535.0155  0.01%     -    0s

Cutting planes:
  Gomory: 1
  Cover: 1
  Implied bound: 1
  MIR: 3

Explored 0 nodes (1576 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.553600000000e+04, best bound 1.553600000000e+04, gap 0.0%