Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:49 2012

Optimize a model with 291 rows, 80 columns and 582 nonzeros
Presolve removed 96 rows and 0 columns
Presolve time: 0.00s
Presolved: 195 rows, 80 columns, 460 nonzeros
Variable types: 0 continuous, 80 integer (80 binary)
Found heuristic solution: objective 26.0000000

Root relaxation: objective 3.150000e+01, 131 iterations, 0.00 seconds

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

     0     0   31.50000    0   77   26.00000   31.50000  21.2%     -    0s
     0     0   30.58338    0   80   26.00000   30.58338  17.6%     -    0s
H    0     0                      27.0000000   30.58338  13.3%     -    0s
     0     0   30.26535    0   80   27.00000   30.26535  12.1%     -    0s
H    0     0                      29.0000000   30.26535  4.36%     -    0s
     0     0   30.10435    0   79   29.00000   30.10435  3.81%     -    0s
     0     0     cutoff    0        29.00000   29.99997  3.45%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 35

Explored 0 nodes (296 simplex iterations) in 0.02 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%