Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:49:08 2012

Optimize a model with 17855 rows, 20880 columns and 73726 nonzeros
Presolve removed 29 rows and 3890 columns
Presolve time: 0.35s
Presolved: 17826 rows, 16990 columns, 69590 nonzeros
Variable types: 0 continuous, 16990 integer (16990 binary)
Found heuristic solution: objective 144.0000000

Root relaxation: objective 2.000000e+00, 11918 iterations, 0.56 seconds

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

     0     0    2.00000    0  208  144.00000    2.00000  98.6%     -    2s
H    0     0                     133.0000000    2.00000  98.5%     -    2s
H    0     0                       4.0000000    2.00000  50.0%     -    2s
H    0     0                       3.0000000    2.00000  33.3%     -    2s

Cutting planes:
  Zero half: 1

Explored 0 nodes (41352 simplex iterations) in 2.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%