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

Optimize a model with 221 rows, 94 columns and 442 nonzeros
Presolve removed 70 rows and 14 columns
Presolve time: 0.00s
Presolved: 151 rows, 80 columns, 316 nonzeros
Variable types: 0 continuous, 80 integer (80 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 4.350000e+01, 97 iterations, 0.00 seconds

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

     0     0   43.50000    0   61   37.00000   43.50000  17.6%     -    0s
     0     0   42.66667    0   56   37.00000   42.66667  15.3%     -    0s
H    0     0                      42.0000000   42.66667  1.59%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 6

Explored 0 nodes (215 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%