Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:47:18 2012

Optimize a model with 60878 rows, 49952 columns and 231472 nonzeros
Presolve removed 1786 rows and 2 columns
Presolve time: 4.63s
Presolved: 59315 rows, 49950 columns, 276211 nonzeros
Variable types: 0 continuous, 49950 integer (49950 binary)
Found heuristic solution: objective 223.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   30557    3.0000818e+00   2.552604e+01   0.000000e+00      5s
   34928    3.0000851e+00   3.201177e+01   0.000000e+00     10s
   38453    3.0000890e+00   1.118259e+02   0.000000e+00     15s
   41837    3.0000920e+00   7.404165e+01   0.000000e+00     20s
   45080    3.0000949e+00   1.446270e+03   0.000000e+00     25s
   48182    3.0000971e+00   1.430702e+01   0.000000e+00     30s
   51425    3.0000994e+00   2.332749e+01   0.000000e+00     35s
   54386    3.0001002e+00   2.264256e+00   0.000000e+00     40s
   55292    3.0000000e+00   0.000000e+00   0.000000e+00     42s

Root relaxation: objective 3.000000e+00, 55292 iterations, 41.61 seconds

    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%     -   84s

Explored 0 nodes (92437 simplex iterations) in 84.57 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%