Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:08:15 2013 Optimize a model with 73226 rows, 5776 columns and 222376 nonzeros Presolve removed 9204 rows and 2991 columns Presolve time: 0.60s Presolved: 64022 rows, 2785 columns, 193813 nonzeros Variable types: 24 continuous, 2761 integer (2761 binary) Found heuristic solution: objective 137570.00000 Root relaxation: objective 1.105430e+05, 12789 iterations, 1.15 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 110543.005 0 9 137570.000 110543.005 19.6% - 1s H 0 0 110558.00000 110543.005 0.01% - 2s H 0 0 110552.00000 110543.005 0.01% - 2s Explored 0 nodes (12806 simplex iterations) in 2.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.105520000000e+05, best bound 1.105430047619e+05, gap 0.0081%