Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:21:20 2013

Optimize a model with 1561 rows, 441 columns and 4851 nonzeros
Presolve removed 276 rows and 222 columns
Presolve time: 0.01s
Presolved: 1285 rows, 219 columns, 4071 nonzeros
Variable types: 12 continuous, 207 integer (207 binary)
Found heuristic solution: objective 8061.0000000

Root relaxation: objective 6.011465e+03, 980 iterations, 0.01 seconds

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

     0     0 6011.46512    0   12 8061.00000 6011.46512  25.4%     -    0s
H    0     0                    6030.0000000 6011.46512  0.31%     -    0s
H    0     0                    6029.0000000 6011.46512  0.29%     -    0s
     0     0 6012.40201    0   24 6029.00000 6012.40201  0.28%     -    0s
     0     0 6012.40201    0   12 6029.00000 6012.40201  0.28%     -    0s
H    0     0                    6025.0000000 6012.40201  0.21%     -    0s
     0     0 6012.41549    0   33 6025.00000 6012.41549  0.21%     -    0s
     0     2 6012.53725    0   33 6025.00000 6012.53725  0.21%     -    0s
H    1     2                    6024.0000000 6012.53725  0.19%   0.0    0s
H    6     5                    6023.0000000 6014.77789  0.14%   0.0    0s

Cutting planes:
  Gomory: 19
  Cover: 13
  Implied bound: 3
  MIR: 35
  GUB cover: 3
  Zero half: 11

Explored 36 nodes (2229 simplex iterations) in 0.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.023000000000e+03, best bound 6.023000000000e+03, gap 0.0%