Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:24:57 2013 Optimize a model with 121575 rows, 8100 columns and 368550 nonzeros Presolve removed 9550 rows and 4129 columns Presolve time: 1.17s Presolved: 112025 rows, 3971 columns, 338684 nonzeros Variable types: 30 continuous, 3941 integer (3941 binary) Found heuristic solution: objective 200681.00000 Root relaxation: objective 1.582756e+05, 21944 iterations, 2.67 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 158275.626 0 8 200681.000 158275.626 21.1% - 4s H 0 0 158296.00000 158275.626 0.01% - 4s H 0 0 158287.00000 158275.626 0.01% - 4s Explored 0 nodes (21965 simplex iterations) in 4.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.582870000000e+05, best bound 1.582760000000e+05, gap 0.0069%