Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:06 2012

Optimize a model with 220 rows, 91 columns and 440 nonzeros
Presolve removed 51 rows and 10 columns
Presolve time: 0.00s
Presolved: 169 rows, 81 columns, 349 nonzeros
Variable types: 0 continuous, 81 integer (81 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 4.200000e+01, 108 iterations, 0.00 seconds

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

     0     0   42.00000    0   62   37.00000   42.00000  13.5%     -    0s
     0     0   41.33333    0   76   37.00000   41.33333  11.7%     -    0s
H    0     0                      38.0000000   41.33333  8.77%     -    0s
     0     0   40.66667    0   65   38.00000   40.66667  7.02%     -    0s
H    0     0                      40.0000000   40.66667  1.67%     -    0s

Cutting planes:
  Zero half: 11

Explored 0 nodes (247 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%