Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:09 2012

Optimize a model with 230 rows, 100 columns and 460 nonzeros
Presolve removed 73 rows and 22 columns
Presolve time: 0.00s
Presolved: 157 rows, 78 columns, 320 nonzeros
Variable types: 0 continuous, 78 integer (78 binary)
Found heuristic solution: objective 43.0000000

Root relaxation: objective 4.750000e+01, 104 iterations, 0.00 seconds

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

     0     0   47.50000    0   67   43.00000   47.50000  10.5%     -    0s
     0     0   46.33333    0   67   43.00000   46.33333  7.75%     -    0s
H    0     0                      44.0000000   46.33333  5.30%     -    0s
     0     0   45.75000    0   77   44.00000   45.75000  3.98%     -    0s
H    0     0                      45.0000000   45.75000  1.67%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 13

Explored 0 nodes (225 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%