Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:06 2012

Optimize a model with 187 rows, 90 columns and 374 nonzeros
Presolve removed 40 rows and 16 columns
Presolve time: 0.00s
Presolved: 147 rows, 74 columns, 302 nonzeros
Variable types: 0 continuous, 74 integer (74 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 4.450000e+01, 100 iterations, 0.00 seconds

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

     0     0   44.50000    0   61   42.00000   44.50000  5.95%     -    0s
     0     0   44.00000    0   64   42.00000   44.00000  4.76%     -    0s
     0     0   44.00000    0   65   42.00000   44.00000  4.76%     -    0s
H    0     0                      43.0000000   44.00000  2.33%     -    0s
     0     0     cutoff    0        43.00000   43.99996  2.33%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 55

Explored 0 nodes (197 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%