Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:35:31 2013

Optimize a model with 1599 rows, 49950 columns and 2177394 nonzeros
Presolve removed 38 rows and 233 columns (presolve time = 6s) ...
Presolve removed 38 rows and 233 columns
Presolve time: 6.67s
Presolved: 1561 rows, 49717 columns, 2170298 nonzeros
Variable types: 0 continuous, 49717 integer (49717 binary)
Found heuristic solution: objective 23193.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8802    1.6593435e+04   8.468718e+02   0.000000e+00      5s
   12882    1.6745666e+04   1.655951e+02   0.000000e+00     10s
   13583    1.6749333e+04   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 1.674933e+04, 13583 iterations, 11.30 seconds

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

     0     0 16749.3333    0  113 23193.0000 16749.3333  27.8%     -   18s
H    0     0                    18005.000000 16749.3333  6.97%     -   19s
     0     0 16756.1163    0  178 18005.0000 16756.1163  6.94%     -   28s
     0     0 16759.1905    0  235 18005.0000 16759.1905  6.92%     -   31s
H    0     0                    16871.000000 16759.1905  0.66%     -   32s
H    0     0                    16760.000000 16759.1905  0.00%     -   33s

Cutting planes:
  Clique: 15
  Zero half: 3

Explored 0 nodes (15072 simplex iterations) in 33.30 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.676000000000e+04, best bound 1.676000000000e+04, gap 0.0%