Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:03 2012

Optimize a model with 139 rows, 77 columns and 278 nonzeros
Presolve removed 52 rows and 23 columns
Presolve time: 0.00s
Presolved: 87 rows, 54 columns, 177 nonzeros
Variable types: 0 continuous, 54 integer (54 binary)
Found heuristic solution: objective 35.0000000

Root relaxation: objective 3.775000e+01, 71 iterations, 0.00 seconds

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

     0     0   37.75000    0   53   35.00000   37.75000  7.86%     -    0s
H    0     0                      36.0000000   37.75000  4.86%     -    0s
     0     0   37.00000    0   48   36.00000   37.00000  2.78%     -    0s
     0     0   37.00000    0   53   36.00000   37.00000  2.78%     -    0s
     0     0   37.00000    0   45   36.00000   37.00000  2.78%     -    0s
     0     2   37.00000    0   45   36.00000   37.00000  2.78%     -    0s

Explored 3 nodes (179 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%