Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:22:41 2013 Optimize a model with 113652 rows, 7744 columns and 344608 nonzeros Presolve removed 8662 rows and 3942 columns Presolve time: 1.21s Presolved: 104990 rows, 3802 columns, 317601 nonzeros Variable types: 31 continuous, 3771 integer (3771 binary) Found heuristic solution: objective 177989.00000 Root relaxation: objective 1.422380e+05, 18325 iterations, 2.37 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 142237.954 0 8 177989.000 142237.954 20.1% - 3s H 0 0 142259.00000 142237.954 0.01% - 4s H 0 0 142253.00000 142237.954 0.01% - 4s H 0 0 142247.00000 142237.954 0.01% - 4s Explored 0 nodes (18362 simplex iterations) in 4.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.422470000000e+05, best bound 1.422380000000e+05, gap 0.0063%