Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:06:29 2013

Optimize a model with 1702 rows, 47085 columns and 2507543 nonzeros
Presolve removed 63 rows and 571 columns (presolve time = 5s) ...
Presolve removed 68 rows and 688 columns
Presolve time: 8.97s
Presolved: 1634 rows, 46397 columns, 2463871 nonzeros
Variable types: 0 continuous, 46397 integer (46397 binary)
Found heuristic solution: objective 24991.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8060    1.8549588e+04   8.065469e+02   0.000000e+00      5s
   11750    1.8659039e+04   3.603876e+02   0.000000e+00     10s
   14192    1.8673400e+04   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 1.867340e+04, 14192 iterations, 14.94 seconds
Total elapsed time = 25.04s

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

     0     0 18673.4000    0   87 24991.0000 18673.4000  25.3%     -   25s
H    0     0                    19653.000000 18673.4000  4.98%     -   26s
*    0     0               0    18682.000000 18682.0000   0.0%     -   32s

Cutting planes:
  Clique: 8
  Zero half: 35

Explored 0 nodes (15670 simplex iterations) in 32.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.868200000000e+04, best bound 1.868200000000e+04, gap 0.0%