Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:12:13 2012

Optimize a model with 15404 rows, 4290 columns and 50178 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.45s
Presolved: 15467 rows, 4288 columns, 53929 nonzeros
Variable types: 0 continuous, 4288 integer (4288 binary)
Found heuristic solution: objective 65.0000000

Root relaxation: objective 2.000000e+00, 3203 iterations, 0.12 seconds

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

     0     0    2.00000    0  130   65.00000    2.00000  96.9%     -    0s
H    0     0                      61.0000000    2.00000  96.7%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
     0     0    3.00000    0 1811    5.00000    3.00000  40.0%     -   10s
H    0     0                       4.0000000    3.00000  25.0%     -   11s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -   12s

Cutting planes:
  Clique: 98
  Zero half: 9

Explored 0 nodes (40611 simplex iterations) in 12.11 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%