Gurobi 5.0.1 (linux64) logging started Fri Nov 16 05:36:16 2012

Optimize a model with 9459 rows, 3080 columns and 31183 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.20s
Presolved: 9457 rows, 3078 columns, 30839 nonzeros
Variable types: 0 continuous, 3078 integer (3078 binary)
Found heuristic solution: objective 55.0000000

Root relaxation: objective 2.000000e+00, 2213 iterations, 0.07 seconds

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

     0     0    2.00000    0  110   55.00000    2.00000  96.4%     -    0s
H    0     0                      51.0000000    2.00000  96.1%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0  600    5.00000    3.00000  40.0%     -    1s
     0     0    3.00952    0 2176    5.00000    3.00952  39.8%     -    2s
     0     0    3.00952    0 2194    5.00000    3.00952  39.8%     -    3s
H    0     0                       4.0000000    3.00952  24.8%     -    3s

Cutting planes:
  Clique: 30
  Zero half: 6

Explored 0 nodes (13515 simplex iterations) in 3.21 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%