Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:07 2012

Optimize a model with 212 rows, 93 columns and 424 nonzeros
Presolve removed 58 rows and 14 columns
Presolve time: 0.00s
Presolved: 154 rows, 79 columns, 320 nonzeros
Variable types: 0 continuous, 79 integer (79 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 4.266667e+01, 98 iterations, 0.00 seconds

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

     0     0   42.66667    0   63   40.00000   42.66667  6.67%     -    0s
H    0     0                      41.0000000   42.66667  4.07%     -    0s
     0     0     cutoff    0        41.00000   41.99996  2.44%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 38

Explored 0 nodes (138 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.100000000000e+01, best bound 4.100000000000e+01, gap 0.0%