Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:08:35 2012

Optimize a model with 56636 rows, 47306 columns and 216130 nonzeros
Presolve removed 1521 rows and 2 columns
Presolve time: 1.44s
Presolved: 55332 rows, 47304 columns, 259022 nonzeros
Variable types: 0 continuous, 47304 integer (47304 binary)
Found heuristic solution: objective 217.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   33272    3.0000857e+00   4.420143e+01   0.000000e+00      5s
   37108    3.0000895e+00   3.980540e+02   0.000000e+00     10s
   40533    3.0000931e+00   1.591642e+03   0.000000e+00     15s
   43958    3.0000956e+00   2.058174e+01   0.000000e+00     20s
   47657    3.0000998e+00   2.466519e+01   0.000000e+00     25s
   51219    3.0001036e+00   5.401889e+01   0.000000e+00     30s
   53806    3.0000000e+00   0.000000e+00   0.000000e+00     34s

Root relaxation: objective 3.000000e+00, 53806 iterations, 34.04 seconds
Total elapsed time = 77.68s
Total elapsed time = 81.52s

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

*    0     0               0       3.0000000    3.00000   0.0%     -   85s

Explored 0 nodes (131973 simplex iterations) in 85.37 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%