Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:13:30 2012

Optimize a model with 3001 rows, 1482 columns and 10296 nonzeros
Presolve removed 686 rows and 2 columns
Presolve time: 0.10s
Presolved: 2353 rows, 1480 columns, 10022 nonzeros
Variable types: 0 continuous, 1480 integer (1480 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.000000e+00, 2030 iterations, 0.09 seconds

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

     0     0    4.00000    0  154   38.00000    4.00000  89.5%     -    0s
H    0     0                      30.0000000    4.00000  86.7%     -    0s
H    0     0                       9.0000000    4.00000  55.6%     -    0s
     0     0    4.00000    0  127    9.00000    4.00000  55.6%     -    0s
H    0     0                       8.0000000    4.00000  50.0%     -    0s
H    0     0                       4.0000000    4.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 5

Explored 0 nodes (5937 simplex iterations) in 0.44 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%