Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:11:33 2012

Optimize a model with 6712 rows, 2450 columns and 22342 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.11s
Presolved: 6759 rows, 2448 columns, 24469 nonzeros
Variable types: 0 continuous, 2448 integer (2448 binary)
Found heuristic solution: objective 49.0000000

Root relaxation: objective 2.000000e+00, 1865 iterations, 0.05 seconds

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

     0     0    2.00000    0   96   49.00000    2.00000  95.9%     -    0s
H    0     0                      48.0000000    2.00000  95.8%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0  996    5.00000    3.00000  40.0%     -    0s
     0     0    3.00000    0 1491    5.00000    3.00000  40.0%     -    1s
     0     0    3.00000    0   66    5.00000    3.00000  40.0%     -    3s
H    0     0                       4.0000000    3.00000  25.0%     -    4s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    4s

Cutting planes:
  Clique: 29
  Zero half: 28

Explored 0 nodes (23629 simplex iterations) in 4.40 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%