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

Optimize a model with 259 rows, 96 columns and 518 nonzeros
Presolve removed 72 rows and 10 columns
Presolve time: 0.00s
Presolved: 187 rows, 86 columns, 391 nonzeros
Variable types: 0 continuous, 86 integer (86 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.366667e+01, 125 iterations, 0.00 seconds

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

     0     0   43.66667    0   73   39.00000   43.66667  12.0%     -    0s
H    0     0                      42.0000000   43.66667  3.97%     -    0s
     0     0   43.00000    0   81   42.00000   43.00000  2.38%     -    0s
     0     0   43.00000    0   74   42.00000   43.00000  2.38%     -    0s
     0     0     cutoff    0        42.00000   42.99996  2.38%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 66

Explored 0 nodes (220 simplex iterations) in 0.02 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%