Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:14:18 2012

Optimize a model with 20085 rows, 27722 columns and 87148 nonzeros
Presolve removed 41 rows and 6476 columns
Presolve time: 0.43s
Presolved: 20044 rows, 21246 columns, 80432 nonzeros
Variable types: 0 continuous, 21246 integer (21246 binary)
Found heuristic solution: objective 166.0000000

Root relaxation: objective 2.000000e+00, 13911 iterations, 0.80 seconds

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

     0     0    2.00000    0  170  166.00000    2.00000  98.8%     -    2s
H    0     0                       3.0000000    2.00000  33.3%     -    2s
     0     0 infeasible    0         3.00000    2.00000  33.3%     -    2s

Cutting planes:
  Gomory: 1
  Zero half: 4

Explored 0 nodes (43921 simplex iterations) in 2.61 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%