Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:13:09 2012

Optimize a model with 3115 rows, 1482 columns and 10638 nonzeros
Presolve removed 800 rows and 2 columns
Presolve time: 0.10s
Presolved: 2353 rows, 1480 columns, 10212 nonzeros
Variable types: 0 continuous, 1480 integer (1480 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 3.000000e+00, 2114 iterations, 0.14 seconds

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

     0     0    3.00000    0   42   38.00000    3.00000  92.1%     -    0s
H    0     0                      30.0000000    3.00000  90.0%     -    0s
H    0     0                      10.0000000    3.00000  70.0%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0    3.00000    0   66    4.00000    3.00000  25.0%     -    0s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    0s

Cutting planes:
  Zero half: 20

Explored 0 nodes (7353 simplex iterations) in 0.76 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%