Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:28:13 2012

Optimize a model with 9519 rows, 4970 columns and 33178 nonzeros
Presolve removed 1262 rows and 2 columns
Presolve time: 0.36s
Presolved: 8327 rows, 4968 columns, 34762 nonzeros
Variable types: 0 continuous, 4968 integer (4968 binary)
Found heuristic solution: objective 70.0000000

Root relaxation: objective 3.000000e+00, 6838 iterations, 1.00 seconds
Total elapsed time = 5.77s

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

     0     0    3.00000    0   81   70.00000    3.00000  95.7%     -    7s
H    0     0                      25.0000000    3.00000  88.0%     -    7s
H    0     0                       5.0000000    3.00000  40.0%     -    7s
H    0     0                       4.0000000    3.00000  25.0%     -    7s
     0     0    3.00000    0   74    4.00000    3.00000  25.0%     -    7s
H    0     0                       3.0000000    3.00000   0.0%     -    7s

Cutting planes:
  Gomory: 1
  Zero half: 5

Explored 0 nodes (34549 simplex iterations) in 7.93 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%