Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:04 2012

Optimize a model with 159 rows, 83 columns and 318 nonzeros
Presolve removed 45 rows and 13 columns
Presolve time: 0.00s
Presolved: 114 rows, 70 columns, 236 nonzeros
Variable types: 0 continuous, 70 integer (70 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 4.025000e+01, 82 iterations, 0.00 seconds

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

     0     0   40.25000    0   61   37.00000   40.25000  8.78%     -    0s
H    0     0                      38.0000000   40.25000  5.92%     -    0s
*    0     0               0      39.0000000   39.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 11

Explored 0 nodes (115 simplex iterations) in 0.00 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%