Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:50:34 2013 Optimize a model with 1400 rows, 101300 columns and 203400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.23s Presolved: 1300 rows, 101200 columns, 202300 nonzeros Variable types: 101200 continuous, 0 integer (0 binary) Root relaxation: objective 8.570461e+05, 6721 iterations, 0.60 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 - - 0s H 0 0 896638.58028 857046.104 4.42% - 1s 0 2 857046.104 0 1 896638.580 857046.104 4.42% - 2s 12 14 858744.297 6 1 896638.580 858246.035 4.28% 305 5s 45 47 865557.787 23 1 896638.580 858246.035 4.28% 187 10s * 77 77 39 895811.73760 858246.035 4.19% 148 13s * 91 53 46 867321.59322 858246.035 1.05% 133 14s 110 56 862039.209 55 1 867321.593 858246.035 1.05% 114 15s * 121 35 61 864860.33138 858246.035 0.76% 105 15s * 127 31 64 864145.22771 858246.035 0.68% 101 15s * 143 29 72 863801.96550 858246.035 0.64% 92.3 16s 219 53 859216.391 26 1 863801.965 858246.035 0.64% 73.0 20s * 220 10 27 859244.52823 858246.035 0.12% 72.7 20s * 332 10 24 859151.14532 858797.976 0.04% 54.0 22s * 357 23 36 859009.51298 858915.149 0.01% 50.4 22s Explored 362 nodes (24698 simplex iterations) in 22.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.590095129826e+05, best bound 8.589366879433e+05, gap 0.0085%