Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:08 2012

Optimize a model with 254 rows, 95 columns and 508 nonzeros
Presolve removed 44 rows and 0 columns
Presolve time: 0.00s
Presolved: 210 rows, 95 columns, 445 nonzeros
Variable types: 0 continuous, 95 integer (95 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.150000e+01, 119 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   77   36.00000   41.50000  15.3%     -    0s
     0     0   40.50000    0   89   36.00000   40.50000  12.5%     -    0s
H    0     0                      39.0000000   40.50000  3.85%     -    0s
     0     0   40.00000    0   89   39.00000   40.00000  2.56%     -    0s
     0     0     cutoff    0        39.00000   39.99996  2.56%     -    0s

Cutting planes:
  Zero half: 67

Explored 0 nodes (274 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%