Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:44:05 2012

Optimize a model with 6089 rows, 870 columns and 18993 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.08s
Presolved: 6116 rows, 868 columns, 24179 nonzeros
Variable types: 0 continuous, 868 integer (868 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 3.600000e+00, 4675 iterations, 0.27 seconds

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

     0     0    3.60000    0  650   29.00000    3.60000  87.6%     -    1s
     0     0    6.00000    0  125   29.00000    6.00000  79.3%     -    1s
H    0     0                      24.0000000    6.00000  75.0%     -    1s
H    0     0                       7.0000000    6.00000  14.3%     -    1s
     0     0    6.00000    0  105    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   82    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   99    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   57    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   45    7.00000    6.00000  14.3%     -    2s
     0     0    6.00000    0   69    7.00000    6.00000  14.3%     -    2s
     0     0    6.00000    0   89    7.00000    6.00000  14.3%     -    2s
     0     0    6.00000    0   91    7.00000    6.00000  14.3%     -    2s
     0     0    6.00000    0   76    7.00000    6.00000  14.3%     -    2s
     0     2    6.00000    0   76    7.00000    6.00000  14.3%     -    2s

Cutting planes:
  Clique: 31
  Zero half: 13

Explored 58 nodes (19722 simplex iterations) in 2.72 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%