Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:43:42 2013 Optimize a model with 166750 rows, 10000 columns and 505000 nonzeros Presolve removed 15214 rows and 5129 columns Presolve time: 2.15s Presolved: 151536 rows, 4871 columns, 457323 nonzeros Variable types: 28 continuous, 4843 integer (4843 binary) Found heuristic solution: objective 259047.00000 Root relaxation: objective 2.159019e+05, 21881 iterations, 3.65 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 215901.917 0 13 259047.000 215901.917 16.7% - 6s H 0 0 215926.00000 215901.917 0.01% - 6s H 0 0 215920.00000 215901.917 0.01% - 6s Explored 0 nodes (22026 simplex iterations) in 6.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.159200000000e+05, best bound 2.159020000000e+05, gap 0.0083%