Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:05 2012

Optimize a model with 210 rows, 87 columns and 420 nonzeros
Presolve removed 51 rows and 10 columns
Presolve time: 0.00s
Presolved: 159 rows, 77 columns, 336 nonzeros
Variable types: 0 continuous, 77 integer (77 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.020000e+01, 124 iterations, 0.00 seconds

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

     0     0   40.20000    0   74   36.00000   40.20000  11.7%     -    0s
H    0     0                      37.0000000   40.20000  8.65%     -    0s
     0     0   39.38462    0   77   37.00000   39.38462  6.44%     -    0s
     0     0   38.46154    0   69   37.00000   38.46154  3.95%     -    0s
H    0     0                      38.0000000   38.46154  1.21%     -    0s

Cutting planes:
  Zero half: 15

Explored 0 nodes (233 simplex iterations) in 0.01 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%