Gurobi 5.0.1 (linux64) logging started Wed Apr 24 13:45:57 2013 Optimize a model with 2860 rows, 676260 columns and 1352260 nonzeros Presolve time: 2.82s Presolved: 2860 rows, 676260 columns, 1352260 nonzeros Variable types: 676000 continuous, 260 integer (260 binary) Root relaxation: objective 7.918440e+05, 25415 iterations, 4.41 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 791843.979 0 4 - 791843.979 - - 7s H 0 0 825067.00000 791843.979 4.03% - 10s 0 0 791881.666 0 4 825067.000 791881.666 4.02% - 13s 0 0 791933.261 0 4 825067.000 791933.261 4.02% - 16s 0 0 791940.124 0 3 825067.000 791940.124 4.02% - 18s 0 0 791940.124 0 3 825067.000 791940.124 4.02% - 20s 0 0 791949.385 0 3 825067.000 791949.385 4.01% - 22s 0 0 791953.635 0 3 825067.000 791953.635 4.01% - 24s 0 0 791953.663 0 3 825067.000 791953.663 4.01% - 26s 0 0 791953.663 0 3 825067.000 791953.663 4.01% - 28s 0 0 791953.663 0 3 825067.000 791953.663 4.01% - 30s 0 0 791953.663 0 3 825067.000 791953.663 4.01% - 31s 0 2 791954.136 0 3 825067.000 791954.136 4.01% - 37s 1 3 792105.144 1 3 825067.000 792105.144 4.00% 605 40s H 2 2 813498.64315 792105.144 2.63% 302 41s 3 5 792194.249 3 5 813498.643 792161.652 2.62% 460 45s H 7 7 803003.00000 792161.652 1.35% 232 46s H 8 8 802100.00000 792161.652 1.24% 212 47s H 10 8 792537.00000 792161.652 0.05% 182 48s H 11 7 792522.00000 792161.652 0.05% 168 48s H 15 9 792506.00000 792161.652 0.04% 128 49s H 17 8 792472.00000 792161.652 0.04% 116 50s * 18 9 17 792422.00000 792161.652 0.03% 110 50s Cutting planes: Implied bound: 126 Flow cover: 1 Explored 24 nodes (29143 simplex iterations) in 51.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.924220000000e+05, best bound 7.923472027168e+05, gap 0.0094%