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

Optimize a model with 214 rows, 90 columns and 428 nonzeros
Presolve removed 28 rows and 5 columns
Presolve time: 0.00s
Presolved: 186 rows, 85 columns, 384 nonzeros
Variable types: 0 continuous, 85 integer (85 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.250000e+01, 123 iterations, 0.00 seconds

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

     0     0   42.50000    0   73   36.00000   42.50000  18.1%     -    0s
     0     0   40.88889    0   76   36.00000   40.88889  13.6%     -    0s
H    0     0                      37.0000000   40.88889  10.5%     -    0s
     0     0   40.88889    0   78   37.00000   40.88889  10.5%     -    0s
     0     0   40.54545    0   76   37.00000   40.54545  9.58%     -    0s
     0     0   39.59524    0   76   37.00000   39.59524  7.01%     -    0s
H    0     0                      38.0000000   39.59524  4.20%     -    0s
     0     0   39.50980    0   84   38.00000   39.50980  3.97%     -    0s
     0     0   39.34524    0   81   38.00000   39.34524  3.54%     -    0s
     0     0   39.33333    0   78   38.00000   39.33333  3.51%     -    0s
     0     0   39.32222    0   85   38.00000   39.32222  3.48%     -    0s
     0     0   39.32222    0   85   38.00000   39.32222  3.48%     -    0s
     0     2   39.32222    0   85   38.00000   39.32222  3.48%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 25

Explored 8 nodes (561 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%