Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:41:26 2013 Optimize a model with 161799 rows, 9801 columns and 490050 nonzeros Presolve removed 16296 rows and 5048 columns Presolve time: 2.18s Presolved: 145503 rows, 4753 columns, 438812 nonzeros Variable types: 24 continuous, 4729 integer (4729 binary) Found heuristic solution: objective 243144.00000 Root relaxation: objective 2.116585e+05, 12976 iterations, 2.22 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 211658.500 0 11 243144.000 211658.500 12.9% - 5s H 0 0 211679.00000 211658.500 0.01% - 5s Explored 0 nodes (13029 simplex iterations) in 5.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.116790000000e+05, best bound 2.116590000000e+05, gap 0.0094%