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

Optimize a model with 259 rows, 101 columns and 518 nonzeros
Presolve removed 48 rows and 2 columns
Presolve time: 0.00s
Presolved: 211 rows, 99 columns, 448 nonzeros
Variable types: 0 continuous, 99 integer (99 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.500000e+01, 128 iterations, 0.00 seconds

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

     0     0   45.00000    0   88   38.00000   45.00000  18.4%     -    0s
H    0     0                      42.0000000   45.00000  7.14%     -    0s
     0     0   44.08333    0   93   42.00000   44.08333  4.96%     -    0s
     0     0   43.16667    0   80   42.00000   43.16667  2.78%     -    0s
     0     0 infeasible    0        42.00000   42.99996  2.38%     -    0s

Cutting planes:
  Gomory: 2
  Zero half: 65

Explored 0 nodes (284 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%