Gurobi 5.0.1 (linux64) logging started Fri Jan 18 06:43:49 2013 Optimize a model with 3200 rows, 151200 columns and 753100 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 1.16s Presolved: 3100 rows, 151100 columns, 703000 nonzeros Variable types: 150200 continuous, 900 integer (900 binary) Root relaxation: objective 8.570461e+05, 6722 iterations, 0.99 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 857046.104 0 3 - 857046.104 - - 2s 0 0 857054.726 0 3 - 857054.726 - - 3s 0 0 857056.435 0 5 - 857056.435 - - 4s 0 0 857056.819 0 5 - 857056.819 - - 5s 0 0 857058.418 0 5 - 857058.418 - - 5s 0 0 857058.489 0 5 - 857058.489 - - 6s 0 0 857058.489 0 5 - 857058.489 - - 8s 0 2 857066.271 0 5 - 857066.271 - - 17s 5 7 858414.919 5 6 - 858240.992 - 180 20s 17 19 859535.988 17 3 - 858240.992 - 89.8 25s 30 32 860379.741 30 1 - 858240.992 - 69.6 30s 46 48 861605.017 46 1 - 858240.992 - 58.0 35s 55 57 862009.649 55 1 - 858240.992 - 54.3 40s 65 67 863152.389 65 1 - 858240.992 - 51.8 45s 76 78 864027.800 76 4 - 858240.992 - 48.4 50s 90 92 864205.545 90 1 - 858240.992 - 41.7 55s 102 104 864531.883 102 1 - 858240.992 - 38.1 60s 117 119 864898.753 117 1 - 858240.992 - 34.1 65s 135 137 865505.868 135 1 - 858240.992 - 30.3 70s 151 153 866035.003 151 1 - 858240.992 - 27.7 75s 183 185 866463.926 183 1 - 858240.992 - 23.2 80s 222 224 867182.443 222 1 - 858240.992 - 19.4 85s * 269 122 269 867499.20916 858240.992 1.07% 16.3 89s 271 117 cutoff 269 867499.209 858240.992 1.07% 16.1 90s 282 126 858797.876 12 3 867499.209 858242.675 1.07% 17.4 95s H 299 11 859200.04020 858242.675 0.11% 17.5 100s H 326 16 859042.68049 858246.035 0.09% 18.6 102s * 337 20 35 859037.83562 858246.035 0.09% 18.1 103s 346 24 858354.392 5 3 859037.836 858323.367 0.08% 20.0 105s H 381 37 859008.12380 858323.367 0.08% 19.3 106s * 395 40 44 859007.51463 858323.367 0.08% 18.8 107s 409 39 858817.204 14 3 859007.515 858379.004 0.07% 21.7 110s 481 38 858660.751 8 3 859007.515 858660.751 0.04% 22.3 115s Cutting planes: Flow cover: 5 Explored 526 nodes (18717 simplex iterations) in 117.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.590075146287e+05, best bound 8.589389205733e+05, gap 0.0080%