Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:08:44 2012

Optimize a model with 13064 rows, 4290 columns and 43158 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.38s
Presolved: 13127 rows, 4288 columns, 46981 nonzeros
Variable types: 0 continuous, 4288 integer (4288 binary)
Found heuristic solution: objective 65.0000000

Root relaxation: objective 2.000000e+00, 3178 iterations, 0.10 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 1192    5.00000    3.00000  40.0%     -    2s
     0     0    3.00000    0 1209    5.00000    3.00000  40.0%     -    3s
     0     0    3.00000    0 2610    5.00000    3.00000  40.0%     -    9s
     0     0    3.00000    0 1528    5.00000    3.00000  40.0%     -   17s
     0     0    3.00000    0 1580    5.00000    3.00000  40.0%     -   24s
H    0     0                       4.0000000    3.00000  25.0%     -   24s
     0     0    3.00000    0  519    4.00000    3.00000  25.0%     -   34s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -   36s

Cutting planes:
  Clique: 54
  Zero half: 86

Explored 0 nodes (105567 simplex iterations) in 36.77 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%