Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:16 2012

Optimize a model with 345 rows, 112 columns and 690 nonzeros
Presolve removed 80 rows and 6 columns
Presolve time: 0.00s
Presolved: 265 rows, 106 columns, 570 nonzeros
Variable types: 0 continuous, 106 integer (106 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 4.883333e+01, 181 iterations, 0.00 seconds

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

     0     0   48.83333    0  104   40.00000   48.83333  22.1%     -    0s
H    0     0                      44.0000000   48.83333  11.0%     -    0s
     0     0   47.80000    0   99   44.00000   47.80000  8.64%     -    0s
H    0     0                      46.0000000   47.80000  3.91%     -    0s
     0     0   47.57025    0  101   46.00000   47.57025  3.41%     -    0s
     0     0   47.39655    0  106   46.00000   47.39655  3.04%     -    0s
     0     0   47.34545    0  104   46.00000   47.34545  2.92%     -    0s
     0     0     cutoff    0        46.00000   46.99995  2.17%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 58

Explored 0 nodes (509 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%