Gurobi 5.0.1 (linux64) logging started Fri Nov 16 04:13:22 2012

Optimize a model with 6565 rows, 2450 columns and 21901 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.11s
Presolved: 6612 rows, 2448 columns, 24034 nonzeros
Variable types: 0 continuous, 2448 integer (2448 binary)
Found heuristic solution: objective 49.0000000

Root relaxation: objective 2.000000e+00, 1700 iterations, 0.04 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                      45.0000000    2.00000  95.6%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0  243    5.00000    3.00000  40.0%     -    0s
H    0     0                       4.0000000    3.00000  25.0%     -    0s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    0s

Cutting planes:
  Clique: 106
  Zero half: 39

Explored 0 nodes (8611 simplex iterations) in 0.90 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%