Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:43:50 2013

Optimize a model with 7175 rows, 1225 columns and 22050 nonzeros
Presolve removed 834 rows and 615 columns
Presolve time: 0.05s
Presolved: 6341 rows, 610 columns, 19724 nonzeros
Variable types: 22 continuous, 588 integer (588 binary)
Found heuristic solution: objective 22008.000000
Found heuristic solution: objective 20401.000000

Root relaxation: objective 1.521026e+04, 4564 iterations, 0.16 seconds

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

     0     0 15210.2609    0   13 20401.0000 15210.2609  25.4%     -    0s
H    0     0                    15239.000000 15210.2609  0.19%     -    0s
H    0     0                    15231.000000 15210.2609  0.14%     -    0s
     0     0 15211.0000    0   24 15231.0000 15211.0000  0.13%     -    0s
     0     0 15211.0000    0   12 15231.0000 15211.0000  0.13%     -    0s
H    0     0                    15226.000000 15211.0000  0.10%     -    0s
H    0     0                    15219.000000 15211.0000  0.05%     -    0s
     0     0 15211.0000    0   25 15219.0000 15211.0000  0.05%     -    0s
H    0     0                    15218.000000 15211.0000  0.05%     -    0s
     0     2 15211.0000    0   25 15218.0000 15211.0000  0.05%     -    0s
H    1     2                    15217.000000 15211.0000  0.04%   107    0s
H    6     5                    15216.000000 15211.0000  0.03%  17.8    0s
H  172    63                    15215.000000 15211.2914  0.02%  28.0    0s

Cutting planes:
  Gomory: 6
  Cover: 23
  Implied bound: 4
  Clique: 1
  MIR: 47
  Zero half: 9

Explored 608 nodes (20747 simplex iterations) in 1.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.521500000000e+04, best bound 1.521400000000e+04, gap 0.0066%