Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:39:09 2012

Optimize a model with 69147 rows, 55932 columns and 262194 nonzeros
Presolve removed 1196 rows and 3776 columns (presolve time = 5s) ...
Presolve removed 1198 rows and 3778 columns
Presolve time: 5.49s
Presolved: 67949 rows, 52154 columns, 255010 nonzeros
Variable types: 0 continuous, 52154 integer (52154 binary)
Found heuristic solution: objective 236.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   36796    3.0000817e+00   1.078687e+02   0.000000e+00      5s
   42709    3.0000980e+00   5.316464e+02   0.000000e+00     10s
   46759    3.0001014e+00   3.565377e+01   0.000000e+00     15s
   50059    3.0001034e+00   7.029641e+01   0.000000e+00     20s
   53059    3.0001050e+00   1.196078e+02   0.000000e+00     25s
   55909    3.0001064e+00   1.663527e+02   0.000000e+00     30s
   59059    3.0001083e+00   3.445914e+02   0.000000e+00     35s
   62059    3.0001103e+00   8.873252e+01   0.000000e+00     40s
   64909    3.0001120e+00   1.222850e+01   0.000000e+00     45s
   67609    3.0001137e+00   5.219721e+00   0.000000e+00     50s
   70159    3.0001159e+00   1.779091e+02   0.000000e+00     55s
   72503    3.0000000e+00   0.000000e+00   0.000000e+00     59s

Root relaxation: objective 3.000000e+00, 72503 iterations, 58.80 seconds
Total elapsed time = 126.99s

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

     0     0    3.00000    0  144  236.00000    3.00000  98.7%     -  139s
H    0     0                       4.0000000    3.00000  25.0%     -  139s
H    0     0                       3.0000000    3.00000   0.0%     -  139s

Explored 0 nodes (155242 simplex iterations) in 139.98 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%