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

Optimize a model with 259 rows, 98 columns and 518 nonzeros
Presolve removed 86 rows and 14 columns
Presolve time: 0.00s
Presolved: 173 rows, 84 columns, 370 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 4.440000e+01, 132 iterations, 0.00 seconds

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

     0     0   44.40000    0   81   40.00000   44.40000  11.0%     -    0s
     0     0   43.66667    0   82   40.00000   43.66667  9.17%     -    0s
     0     0   43.26667    0   83   40.00000   43.26667  8.17%     -    0s
     0     0   42.88889    0   81   40.00000   42.88889  7.22%     -    0s
     0     0   42.76190    0   81   40.00000   42.76190  6.90%     -    0s
H    0     0                      41.0000000   42.76190  4.30%     -    0s
     0     0   42.66667    0   79   41.00000   42.66667  4.07%     -    0s
     0     0   42.65000    0   78   41.00000   42.65000  4.02%     -    0s
H    0     0                      42.0000000   42.65000  1.55%     -    0s

Cutting planes:
  Zero half: 18

Explored 0 nodes (332 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%