Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:18:49 2013

Optimize a model with 1640 rows, 48298 columns and 2318011 nonzeros
Presolve removed 22 rows and 39 columns (presolve time = 5s) ...
Presolve removed 33 rows and 109 columns (presolve time = 11s) ...
Presolve removed 33 rows and 109 columns
Presolve time: 12.22s
Presolved: 1607 rows, 48189 columns, 2312572 nonzeros
Variable types: 0 continuous, 48189 integer (48189 binary)
Found heuristic solution: objective 22564.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8818    1.6963646e+04   9.507640e+02   0.000000e+00      5s
   12844    1.7077971e+04   2.003431e+03   0.000000e+00     10s
   14424    1.7089000e+04   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 1.708900e+04, 14424 iterations, 12.86 seconds

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

     0     0 17089.0000    0  115 22564.0000 17089.0000  24.3%     -   26s
H    0     0                    17377.000000 17089.0000  1.66%     -   29s
*    0     0               0    17106.000000 17106.0000   0.0%     -   31s

Cutting planes:
  Clique: 8
  Zero half: 13

Explored 0 nodes (15119 simplex iterations) in 31.34 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.710600000000e+04, best bound 1.710600000000e+04, gap 0.0%