Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:34:34 2013 Optimize a model with 142975 rows, 9025 columns and 433200 nonzeros Presolve removed 6617 rows and 4530 columns Presolve time: 1.69s Presolved: 136358 rows, 4495 columns, 413945 nonzeros Variable types: 53 continuous, 4442 integer (4442 binary) Found heuristic solution: objective 182595.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 27031 1.0991179e+05 0.000000e+00 3.560439e+09 5s 51443 1.2802187e+05 0.000000e+00 0.000000e+00 9s 51443 1.2802187e+05 0.000000e+00 0.000000e+00 9s Root relaxation: objective 1.280219e+05, 51443 iterations, 8.53 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 128021.867 0 12 182595.000 128021.867 29.9% - 11s H 0 0 128041.00000 128021.867 0.01% - 11s H 0 0 128035.00000 128021.867 0.01% - 11s 0 0 128023.083 0 35 128035.000 128023.083 0.01% - 11s Cutting planes: Gomory: 6 Implied bound: 2 MIR: 9 Zero half: 1 Explored 0 nodes (51617 simplex iterations) in 11.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.280350000000e+05, best bound 1.280240000000e+05, gap 0.0086%