Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:21:28 2012

Optimize a model with 8511 rows, 4160 columns and 29374 nonzeros
Presolve removed 386 rows and 2 columns
Presolve time: 0.34s
Presolved: 8189 rows, 4158 columns, 32256 nonzeros
Variable types: 0 continuous, 4158 integer (4158 binary)
Found heuristic solution: objective 64.0000000

Root relaxation: objective 3.000000e+00, 5671 iterations, 0.65 seconds

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

     0     0    3.00000    0   82   64.00000    3.00000  95.3%     -    4s
H    0     0                       4.0000000    3.00000  25.0%     -    4s
     0     0    3.00000    0   76    4.00000    3.00000  25.0%     -    5s
H    0     0                       3.0000000    3.00000   0.0%     -    5s

Cutting planes:
  Gomory: 3
  Zero half: 4

Explored 0 nodes (34824 simplex iterations) in 5.97 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%