Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:03 2012

Optimize a model with 173 rows, 79 columns and 346 nonzeros
Presolve removed 74 rows and 25 columns
Presolve time: 0.00s
Presolved: 99 rows, 54 columns, 208 nonzeros
Variable types: 0 continuous, 54 integer (54 binary)
Found heuristic solution: objective 33.0000000

Root relaxation: objective 3.750000e+01, 65 iterations, 0.00 seconds

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

     0     0   37.50000    0   41   33.00000   37.50000  13.6%     -    0s
H    0     0                      35.0000000   37.50000  7.14%     -    0s
     0     0   36.81818    0   50   35.00000   36.81818  5.19%     -    0s
H    0     0                      36.0000000   36.81818  2.27%     -    0s

Cutting planes:
  Zero half: 4

Explored 0 nodes (139 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%