Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:32:25 2013

Optimize a model with 1642 rows, 49974 columns and 2315849 nonzeros
Presolve removed 13 rows and 74 columns (presolve time = 5s) ...
Presolve removed 13 rows and 74 columns
Presolve time: 6.41s
Presolved: 1629 rows, 49900 columns, 2310643 nonzeros
Variable types: 0 continuous, 49900 integer (49900 binary)
Found heuristic solution: objective 27540.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    9143    1.7322260e+04   1.001093e+03   0.000000e+00      5s
   13571    1.7471381e+04   9.012129e+02   0.000000e+00     10s
   15716    1.7491000e+04   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 1.749100e+04, 15716 iterations, 14.36 seconds

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

     0     0 17491.0000    0   70 27540.0000 17491.0000  36.5%     -   21s
H    0     0                    18796.000000 17491.0000  6.94%     -   22s
H    0     0                    17543.000000 17491.0000  0.30%     -   22s
H    0     0                    17531.000000 17491.0000  0.23%     -   23s
     0     0 17494.8750    0  152 17531.0000 17494.8750  0.21%     -   27s
H    0     0                    17529.000000 17494.8750  0.19%     -   38s
     0     0 17496.0000    0   98 17529.0000 17496.0000  0.19%     -   44s
     0     0 17496.6667    0   91 17529.0000 17496.6667  0.18%     -   46s
*    0     0               0    17497.000000 17497.0000   0.0%     -   48s

Cutting planes:
  Gomory: 2
  Clique: 6
  Zero half: 53

Explored 0 nodes (33493 simplex iterations) in 48.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.749700000000e+04, best bound 1.749700000000e+04, gap 0.0%