Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:48:02 2013 Optimize a model with 2400 rows, 101200 columns and 204100 nonzeros Presolve removed 400 rows and 300 columns Presolve time: 0.49s Presolved: 2000 rows, 100900 columns, 203000 nonzeros Variable types: 100500 continuous, 400 integer (400 binary) Root relaxation: objective 8.570461e+05, 6932 iterations, 1.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 857046.104 0 1 - 857046.104 - - 1s H 0 0 879012.06458 857046.104 2.50% - 2s 0 2 857106.280 0 1 879012.065 857106.280 2.49% - 3s 13 15 859012.178 13 1 879012.065 858230.542 2.36% 99.2 5s H 27 15 862271.92178 858230.542 0.47% 65.7 6s H 31 8 861190.72660 858230.542 0.34% 61.1 7s * 35 7 34 861122.55106 858230.542 0.34% 55.1 7s H 38 2 859216.39098 858312.493 0.11% 57.4 7s H 54 7 859207.42663 858439.689 0.09% 51.9 9s 68 9 859176.453 3 1 859207.427 858522.403 0.08% 57.1 10s H 88 11 859185.93790 858753.068 0.05% 49.2 10s * 91 11 13 859163.71493 858753.068 0.05% 48.2 10s * 96 11 13 859145.02367 858753.068 0.05% 46.8 11s H 98 7 859025.67628 858753.068 0.03% 45.9 11s * 102 7 12 859001.15552 858753.068 0.03% 44.7 11s Explored 111 nodes (11607 simplex iterations) in 11.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.590011555227e+05, best bound 8.589725178686e+05, gap 0.0033%