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

Optimize a model with 229 rows, 89 columns and 458 nonzeros
Presolve removed 45 rows and 5 columns
Presolve time: 0.00s
Presolved: 184 rows, 84 columns, 384 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)
Found heuristic solution: objective 32.0000000

Root relaxation: objective 3.975000e+01, 110 iterations, 0.00 seconds

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

     0     0   39.75000    0   69   32.00000   39.75000  24.2%     -    0s
H    0     0                      36.0000000   39.75000  10.4%     -    0s
H    0     0                      37.0000000   39.75000  7.43%     -    0s
     0     0   39.00000    0   69   37.00000   39.00000  5.41%     -    0s
     0     0   39.00000    0   56   37.00000   39.00000  5.41%     -    0s
     0     0   39.00000    0   56   37.00000   39.00000  5.41%     -    0s
     0     0   39.00000    0   56   37.00000   39.00000  5.41%     -    0s
     0     2   39.00000    0   56   37.00000   39.00000  5.41%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 11

Explored 9 nodes (495 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%