Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:32:02 2013 Optimize a model with 138509 rows, 8836 columns and 419710 nonzeros Presolve removed 6585 rows and 4441 columns Presolve time: 1.52s Presolved: 131924 rows, 4395 columns, 400140 nonzeros Variable types: 48 continuous, 4347 integer (4347 binary) Found heuristic solution: objective 199515.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 31777 1.3282628e+05 0.000000e+00 1.387790e+07 5s 48750 1.4069380e+05 0.000000e+00 0.000000e+00 8s 48750 1.4069380e+05 0.000000e+00 0.000000e+00 8s Root relaxation: objective 1.406938e+05, 48750 iterations, 7.74 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 140693.800 0 18 199515.000 140693.800 29.5% - 9s H 0 0 140718.00000 140693.800 0.02% - 10s H 0 0 140712.00000 140693.800 0.01% - 10s H 0 0 140704.00000 140693.800 0.01% - 10s Explored 0 nodes (49058 simplex iterations) in 10.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.407040000000e+05, best bound 1.406940000000e+05, gap 0.0071%