Gurobi 5.0.1 (linux64) logging started Fri Nov 16 06:28:02 2012

Optimize a model with 10613 rows, 3422 columns and 34972 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.25s
Presolved: 10669 rows, 3420 columns, 37970 nonzeros
Variable types: 0 continuous, 3420 integer (3420 binary)
Found heuristic solution: objective 58.0000000

Root relaxation: objective 2.000000e+00, 2470 iterations, 0.08 seconds

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

     0     0    2.00000    0  116   58.00000    2.00000  96.6%     -    0s
H    0     0                      55.0000000    2.00000  96.4%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0  112    5.00000    3.00000  40.0%     -    1s
     0     0    3.00901    0 2349    5.00000    3.00901  39.8%     -    2s
H    0     0                       4.0000000    3.00901  24.8%     -    3s

Cutting planes:
  Clique: 28
  Zero half: 4

Explored 0 nodes (15057 simplex iterations) in 3.17 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%