Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:13:05 2012

Optimize a model with 3191 rows, 1482 columns and 10866 nonzeros
Presolve removed 725 rows and 40 columns
Presolve time: 0.11s
Presolved: 2466 rows, 1442 columns, 9102 nonzeros
Variable types: 0 continuous, 1442 integer (1442 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 3.000000e+00, 2298 iterations, 0.15 seconds

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

     0     0    3.00000    0   79   38.00000    3.00000  92.1%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0  155    4.00000    3.00000  25.0%     -    0s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    1s

Cutting planes:
  Gomory: 1
  Zero half: 40

Explored 0 nodes (9388 simplex iterations) in 1.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%