Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:30:05 2013

Optimize a model with 1718 rows, 52494 columns and 2549712 nonzeros
Presolve removed 35 rows and 207 columns (presolve time = 5s) ...
Presolve removed 51 rows and 454 columns (presolve time = 10s) ...
Presolve removed 51 rows and 454 columns
Presolve time: 10.82s
Presolved: 1667 rows, 52040 columns, 2527132 nonzeros
Variable types: 0 continuous, 52040 integer (52040 binary)
Found heuristic solution: objective 29236.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8279    1.7840521e+04   5.386507e+03   0.000000e+00      5s
   12154    1.7965800e+04   2.289337e+02   0.000000e+00     10s
   13901    1.7980000e+04   0.000000e+00   0.000000e+00     14s

Root relaxation: objective 1.798000e+04, 13901 iterations, 13.51 seconds

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

*    0     0               0    17980.000000 17980.0000   0.0%     -   24s

Explored 0 nodes (13901 simplex iterations) in 24.76 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.798000000000e+04, best bound 1.798000000000e+04, gap 0.0%