Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:20:48 2013 Optimize a model with 109823 rows, 7569 columns and 333036 nonzeros Presolve removed 8698 rows and 3857 columns Presolve time: 0.93s Presolved: 101125 rows, 3712 columns, 305895 nonzeros Variable types: 30 continuous, 3682 integer (3682 binary) Found heuristic solution: objective 186334.00000 Root relaxation: objective 1.517600e+05, 17375 iterations, 1.98 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 151760.034 0 9 186334.000 151760.034 18.6% - 3s H 0 0 151772.00000 151760.034 0.01% - 3s Explored 0 nodes (17415 simplex iterations) in 3.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.517720000000e+05, best bound 1.517610000000e+05, gap 0.0072%