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

Optimize a model with 213 rows, 97 columns and 426 nonzeros
Presolve removed 65 rows and 16 columns
Presolve time: 0.00s
Presolved: 148 rows, 81 columns, 308 nonzeros
Variable types: 0 continuous, 81 integer (81 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 4.500000e+01, 90 iterations, 0.00 seconds

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

     0     0   45.00000    0   66   37.00000   45.00000  21.6%     -    0s
H    0     0                      39.0000000   45.00000  15.4%     -    0s
     0     0   43.75000    0   70   39.00000   43.75000  12.2%     -    0s
H    0     0                      43.0000000   43.75000  1.74%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 6

Explored 0 nodes (188 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%