Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:41:18 2013 Optimize a model with 197540 rows, 196140 columns and 784140 nonzeros Presolve removed 7449 rows and 0 columns Presolve time: 1.91s Presolved: 190091 rows, 196140 columns, 769242 nonzeros Variable types: 196000 continuous, 140 integer (140 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 19668 1.2888898e+05 2.481590e+04 0.000000e+00 5s 27492 1.5266611e+05 3.095139e+04 0.000000e+00 10s 37250 1.9554537e+05 1.499851e+04 0.000000e+00 15s 44390 2.0710785e+05 3.741703e+03 0.000000e+00 20s 47609 2.0838350e+05 0.000000e+00 0.000000e+00 25s Root relaxation: objective 2.083835e+05, 47609 iterations, 25.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 208383.500 0 2 - 208383.500 - - 27s H 0 0 209933.00000 208383.500 0.74% - 28s H 0 0 209166.00000 208383.500 0.37% - 30s 0 0 208386.629 0 4 209166.000 208386.629 0.37% - 32s 0 0 208386.629 0 2 209166.000 208386.629 0.37% - 50s 0 0 208386.629 0 4 209166.000 208386.629 0.37% - 52s 0 0 208386.629 0 4 209166.000 208386.629 0.37% - 53s 0 2 208389.401 0 4 209166.000 208389.401 0.37% - 60s 7 7 208630.712 6 1 209166.000 208553.876 0.29% 325 65s H 10 7 208833.00000 208553.876 0.13% 306 66s * 11 4 9 208747.00000 208553.876 0.09% 289 66s * 19 1 8 208707.00000 208626.993 0.04% 224 67s Cutting planes: Gomory: 2 Flow cover: 2 Explored 30 nodes (73253 simplex iterations) in 68.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.087070000000e+05, best bound 2.086892158669e+05, gap 0.0085%