Gurobi 5.6.3 (linux64) logging started Tue Oct  7 23:45:28 2014

Optimize a model with 21757 rows, 21756 columns and 64974 nonzeros
Presolve time: 0.47s
Presolved: 21757 rows, 21756 columns, 64974 nonzeros
Variable types: 0 continuous, 21756 integer (21756 binary)
Found heuristic solution: objective 18.4914706

Root relaxation: objective 1.282481e+01, 1832 iterations, 0.17 seconds

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

*    0     0               0      12.8248052   12.82481  0.00%     -    0s

Explored 0 nodes (1832 simplex iterations) in 0.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.282480518433e+01, best bound 1.282480518433e+01, gap 0.0%