Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:04 2012

Optimize a model with 157 rows, 82 columns and 314 nonzeros
Presolve removed 54 rows and 23 columns
Presolve time: 0.00s
Presolved: 103 rows, 59 columns, 209 nonzeros
Variable types: 0 continuous, 59 integer (59 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.050000e+01, 70 iterations, 0.00 seconds

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

     0     0   40.50000    0   51   38.00000   40.50000  6.58%     -    0s
     0     0   40.00000    0   48   38.00000   40.00000  5.26%     -    0s
H    0     0                      39.0000000   40.00000  2.56%     -    0s
H    0     0                      40.0000000   40.00000   0.0%     -    0s

Cutting planes:
  Zero half: 5

Explored 0 nodes (124 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%