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

Optimize a model with 223 rows, 89 columns and 446 nonzeros
Presolve removed 34 rows and 5 columns
Presolve time: 0.00s
Presolved: 189 rows, 84 columns, 395 nonzeros
Variable types: 0 continuous, 84 integer (84 binary)
Found heuristic solution: objective 34.0000000

Root relaxation: objective 4.100000e+01, 115 iterations, 0.00 seconds

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

     0     0   41.00000    0   68   34.00000   41.00000  20.6%     -    0s
H    0     0                      35.0000000   41.00000  17.1%     -    0s
     0     0   39.00000    0   68   35.00000   39.00000  11.4%     -    0s
     0     0   38.50000    0   61   35.00000   38.50000  10.0%     -    0s
     0     0   38.00000    0   82   35.00000   38.00000  8.57%     -    0s
H    0     0                      36.0000000   38.00000  5.56%     -    0s
     0     0   38.00000    0   77   36.00000   38.00000  5.56%     -    0s
     0     0   38.00000    0   78   36.00000   38.00000  5.56%     -    0s
     0     0   38.00000    0   68   36.00000   38.00000  5.56%     -    0s
H    0     0                      37.0000000   38.00000  2.70%     -    0s
     0     2   38.00000    0   68   37.00000   38.00000  2.70%     -    0s

Explored 3 nodes (448 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%