Gurobi 5.0.1 (linux64) logging started Fri Jan 18 06:06:36 2013 Optimize a model with 1600 rows, 50600 columns and 326550 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.76s Presolved: 1550 rows, 50550 columns, 301500 nonzeros Variable types: 50100 continuous, 450 integer (450 binary) Root relaxation: objective 1.626233e+05, 2540 iterations, 0.21 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 15 - 162623.326 - - 1s 0 0 162627.401 0 15 - 162627.401 - - 1s 0 0 162628.535 0 17 - 162628.535 - - 1s 0 0 162628.894 0 17 - 162628.894 - - 2s 0 0 162628.894 0 17 - 162628.894 - - 2s 0 0 162628.894 0 17 - 162628.894 - - 2s 0 0 162628.894 0 17 - 162628.894 - - 3s 0 0 162628.894 0 17 - 162628.894 - - 3s 0 0 162628.894 0 17 - 162628.894 - - 3s 0 0 162628.894 0 17 - 162628.894 - - 4s 0 2 162666.791 0 17 - 162666.791 - - 8s 18 20 163471.991 17 5 - 162712.560 - 37.1 10s * 33 20 31 163535.78016 162712.560 0.50% 23.2 10s * 61 33 23 163512.61583 162725.983 0.48% 24.5 11s H 90 12 162918.21263 162772.472 0.09% 19.9 12s Cutting planes: Flow cover: 12 Explored 150 nodes (6024 simplex iterations) in 13.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629182126288e+05, best bound 1.629104145274e+05, gap 0.0048%