Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:17:43 2012

Optimize a model with 42847 rows, 42642 columns and 170154 nonzeros
Presolve removed 414 rows and 2 columns
Presolve time: 1.10s
Presolved: 42639 rows, 42640 columns, 211148 nonzeros
Variable types: 0 continuous, 42640 integer (42640 binary)
Found heuristic solution: objective 206.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25948    3.0000847e+00   1.783333e+01   0.000000e+00      5s
   28157    3.0000000e+00   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 3.000000e+00, 28157 iterations, 6.64 seconds
Total elapsed time = 20.72s

    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%     -   21s

Explored 0 nodes (67759 simplex iterations) in 21.01 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%