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

Optimize a model with 238 rows, 92 columns and 476 nonzeros
Presolve removed 45 rows and 4 columns
Presolve time: 0.00s
Presolved: 193 rows, 88 columns, 407 nonzeros
Variable types: 0 continuous, 88 integer (88 binary)
Found heuristic solution: objective 33.0000000

Root relaxation: objective 4.150000e+01, 109 iterations, 0.00 seconds

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

     0     0   41.50000    0   71   33.00000   41.50000  25.8%     -    0s
H    0     0                      35.0000000   41.50000  18.6%     -    0s
     0     0   40.71429    0   85   35.00000   40.71429  16.3%     -    0s
     0     0   40.28571    0   86   35.00000   40.28571  15.1%     -    0s
H    0     0                      37.0000000   40.28571  8.88%     -    0s
     0     0   39.63768    0   87   37.00000   39.63768  7.13%     -    0s
H    0     0                      38.0000000   39.63768  4.31%     -    0s
     0     0   39.44898    0   87   38.00000   39.44898  3.81%     -    0s
     0     0   39.29630    0   87   38.00000   39.29630  3.41%     -    0s
     0     0   39.28777    0   88   38.00000   39.28777  3.39%     -    0s
     0     0   39.28777    0   88   38.00000   39.28777  3.39%     -    0s
     0     2   39.28777    0   88   38.00000   39.28777  3.39%     -    0s

Cutting planes:
  Zero half: 32

Explored 5 nodes (434 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%