Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:33:05 2013 Optimize a model with 197540 rows, 196140 columns and 784140 nonzeros Presolve removed 12388 rows and 0 columns Presolve time: 1.94s Presolved: 185152 rows, 196140 columns, 759364 nonzeros Variable types: 196000 continuous, 140 integer (140 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20887 1.2859660e+05 2.392564e+04 0.000000e+00 5s 30287 1.6173401e+05 4.311307e+04 0.000000e+00 10s 39952 2.0843270e+05 2.499381e+04 0.000000e+00 15s 46387 2.1637760e+05 1.177936e+04 0.000000e+00 20s 49912 2.1757471e+05 3.227983e+02 0.000000e+00 25s 50235 2.1758486e+05 0.000000e+00 0.000000e+00 26s Root relaxation: objective 2.175849e+05, 50235 iterations, 25.54 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 217584.863 0 4 - 217584.863 - - 28s H 0 0 224606.00000 217584.863 3.13% - 29s H 0 0 220608.00000 217584.863 1.37% - 31s 0 0 217585.145 0 5 220608.000 217585.145 1.37% - 32s 0 0 217585.145 0 5 220608.000 217585.145 1.37% - 34s 0 0 217585.145 0 5 220608.000 217585.145 1.37% - 36s H 0 0 218458.00000 217585.145 0.40% - 41s 0 0 217585.145 0 4 218458.000 217585.145 0.40% - 71s 0 0 217585.145 0 5 218458.000 217585.145 0.40% - 72s 0 0 217585.145 0 5 218458.000 217585.145 0.40% - 73s 0 2 217608.078 0 5 218458.000 217608.078 0.39% - 81s 3 5 217990.444 3 3 218458.000 217836.187 0.28% 619 85s 8 7 218066.337 7 3 218458.000 217836.187 0.28% 585 90s * 13 8 11 218167.00000 217836.187 0.15% 444 92s 19 7 217968.514 3 1 218167.000 217915.166 0.12% 415 95s H 24 8 218145.00000 217915.166 0.11% 374 96s H 25 9 218139.00000 217915.166 0.10% 380 96s * 27 8 10 218119.00000 217915.166 0.09% 363 97s Cutting planes: Gomory: 1 Flow cover: 3 Explored 36 nodes (83970 simplex iterations) in 98.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.181190000000e+05, best bound 2.181190000000e+05, gap 0.0%