Gurobi 5.0.1 (linux64) logging started Fri Jan 18 06:54:14 2013 Optimize a model with 3200 rows, 151200 columns and 753100 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.96s Presolved: 3100 rows, 151100 columns, 703000 nonzeros Variable types: 150200 continuous, 900 integer (900 binary) Root relaxation: objective 8.951303e+05, 7395 iterations, 0.84 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 895130.293 0 12 - 895130.293 - - 2s 0 0 895140.214 0 12 - 895140.214 - - 3s 0 0 895147.289 0 14 - 895147.289 - - 4s 0 0 895147.289 0 14 - 895147.289 - - 4s 0 0 895147.289 0 14 - 895147.289 - - 5s 0 0 895147.289 0 14 - 895147.289 - - 5s 0 0 895147.289 0 14 - 895147.289 - - 6s 0 0 895147.289 0 14 - 895147.289 - - 7s 0 0 895147.289 0 14 - 895147.289 - - 8s 0 2 895152.778 0 14 - 895152.778 - - 16s 14 16 896039.478 14 3 - 895883.870 - 73.7 20s 32 34 896522.967 32 4 - 895883.870 - 45.9 25s 53 55 897406.829 53 1 - 895883.870 - 37.9 30s 72 74 898182.230 72 1 - 895883.870 - 33.3 35s 94 96 898616.116 94 1 - 895883.870 - 27.7 40s 122 124 898935.144 122 1 - 895883.870 - 21.9 45s 150 152 899342.909 150 1 - 895883.870 - 18.2 50s 182 184 899989.246 182 1 - 895883.870 - 15.3 55s 227 229 901077.098 227 1 - 895883.870 - 12.6 60s * 280 108 279 901741.24507 895883.870 0.65% 10.6 63s 285 106 896634.324 3 3 901741.245 896073.320 0.63% 13.0 65s 385 200 899933.407 102 1 901741.245 896073.320 0.63% 15.9 70s 547 347 896848.250 7 6 901741.245 896119.680 0.62% 14.5 75s 601 400 899893.651 181 14 901741.245 896119.680 0.62% 16.4 80s 608 405 901488.575 222 14 901741.245 896119.680 0.62% 16.2 85s 614 411 896210.974 11 9 901741.245 896119.680 0.62% 33.3 91s 620 415 897371.605 14 9 901741.245 896119.680 0.62% 34.6 95s 642 418 896330.148 30 1 901741.245 896275.214 0.61% 36.8 100s 664 415 897081.032 50 1 901741.245 896275.214 0.61% 36.4 105s H 666 387 900852.89008 896275.214 0.51% 36.3 105s 687 385 897702.593 70 1 900852.890 896275.214 0.51% 36.1 110s 715 381 898583.311 94 1 900852.890 896275.214 0.51% 35.5 115s 756 370 900195.673 130 1 900852.890 896275.214 0.51% 34.2 120s 809 356 899545.064 173 1 900852.890 896275.214 0.51% 32.6 125s 868 343 900803.735 219 1 900852.890 896275.214 0.51% 31.1 130s 891 352 899836.224 23 3 900852.890 896471.884 0.49% 34.5 135s 1042 305 899853.833 101 1 900852.890 896471.884 0.49% 31.2 140s 1234 242 896780.717 14 3 900852.890 896546.546 0.48% 26.9 145s 1309 253 897529.325 51 1 900852.890 896546.546 0.48% 27.5 150s H 1327 151 897415.11732 896546.546 0.10% 27.2 151s * 1343 129 77 897414.98791 896546.546 0.10% 26.9 152s * 1351 90 22 896634.43616 896613.796 0.00% 27.0 152s Cutting planes: Flow cover: 12 Explored 1352 nodes (45986 simplex iterations) in 152.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.966344361626e+05, best bound 8.966137959975e+05, gap 0.0023%