Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:10 2012

Optimize a model with 258 rows, 101 columns and 516 nonzeros
Presolve removed 43 rows and 2 columns
Presolve time: 0.00s
Presolved: 215 rows, 99 columns, 452 nonzeros
Variable types: 0 continuous, 99 integer (99 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 4.550000e+01, 152 iterations, 0.00 seconds

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

     0     0   45.50000    0   75   40.00000   45.50000  13.8%     -    0s
     0     0   44.76923    0   96   40.00000   44.76923  11.9%     -    0s
H    0     0                      42.0000000   44.76923  6.59%     -    0s
H    0     0                      43.0000000   44.76923  4.11%     -    0s
     0     0   44.20000    0   92   43.00000   44.20000  2.79%     -    0s
     0     0     cutoff    0        43.00000   43.99996  2.33%     -    0s

Cutting planes:
  Zero half: 45

Explored 0 nodes (325 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%