Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:01 2012

Optimize a model with 143 rows, 68 columns and 286 nonzeros
Presolve removed 26 rows and 3 columns
Presolve time: 0.00s
Presolved: 117 rows, 65 columns, 247 nonzeros
Variable types: 0 continuous, 65 integer (65 binary)
Found heuristic solution: objective 27.0000000

Root relaxation: objective 3.100000e+01, 81 iterations, 0.00 seconds

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

     0     0   31.00000    0   44   27.00000   31.00000  14.8%     -    0s
H    0     0                      28.0000000   31.00000  10.7%     -    0s
     0     0   30.66667    0   52   28.00000   30.66667  9.52%     -    0s
H    0     0                      29.0000000   30.66667  5.75%     -    0s
     0     0   30.20000    0   53   29.00000   30.20000  4.14%     -    0s
     0     0     cutoff    0        29.00000   29.99997  3.45%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 18

Explored 0 nodes (205 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%