Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:00:55 2013 Optimize a model with 226650 rows, 225150 columns and 900150 nonzeros Presolve removed 8792 rows and 0 columns Presolve time: 2.32s Presolved: 217858 rows, 225150 columns, 882566 nonzeros Variable types: 225000 continuous, 150 integer (150 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 21569 1.3609423e+05 2.971393e+04 0.000000e+00 5s 28583 1.5898956e+05 2.440730e+04 0.000000e+00 10s 34404 1.8279245e+05 3.827770e+04 0.000000e+00 15s 43583 2.3441117e+05 1.060791e+04 0.000000e+00 20s 48896 2.4024948e+05 2.275552e+03 0.000000e+00 25s 52217 2.4136174e+05 0.000000e+00 0.000000e+00 30s Root relaxation: objective 2.413617e+05, 52217 iterations, 29.88 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 241361.738 0 3 - 241361.738 - - 33s H 0 0 242455.00000 241361.738 0.45% - 34s 0 0 241362.870 0 4 242455.000 241362.870 0.45% - 37s 0 0 241362.870 0 3 242455.000 241362.870 0.45% - 57s 0 0 241364.774 0 5 242455.000 241364.774 0.45% - 58s 0 0 241364.841 0 5 242455.000 241364.841 0.45% - 59s 0 0 241364.841 0 5 242455.000 241364.841 0.45% - 61s 0 2 241369.063 0 5 242455.000 241369.063 0.45% - 69s 3 5 241404.111 3 1 242455.000 241404.111 0.43% 210 70s 18 19 241431.582 18 1 242455.000 241431.582 0.42% 103 75s H 23 5 241557.00000 241438.472 0.05% 101 76s * 24 2 24 241453.00000 241438.472 0.01% 101 77s Cutting planes: Gomory: 2 Flow cover: 6 Explored 25 nodes (76325 simplex iterations) in 77.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.414530000000e+05, best bound 2.414384716900e+05, gap 0.0060%