Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:01:48 2013 Optimize a model with 1400 rows, 150300 columns and 350400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.23s Presolved: 1300 rows, 150200 columns, 300300 nonzeros Variable types: 150200 continuous, 0 integer (0 binary) Root relaxation: objective 8.570461e+05, 8505 iterations, 0.80 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 0 2 857046.104 0 1 - 857046.104 - - 3s 10 12 858513.582 5 1 - 858246.035 - 257 5s * 73 73 37 895811.73760 858246.035 4.19% 127 9s 74 74 861382.031 37 1 895811.738 858246.035 4.19% 125 10s * 79 61 40 872121.37626 858246.035 1.59% 119 10s * 103 47 52 866383.22778 858246.035 0.94% 96.8 11s 270 76 865781.946 135 1 866383.228 858246.035 0.94% 42.2 15s 353 109 859186.078 24 1 866383.228 858246.035 0.94% 43.6 20s * 376 12 36 859250.06176 858246.035 0.12% 42.7 21s * 498 10 29 859153.38584 858797.976 0.04% 35.7 24s 513 17 858986.087 26 1 859153.386 858915.149 0.03% 34.7 25s * 538 38 51 859022.17709 858915.149 0.01% 33.1 25s Explored 543 nodes (26337 simplex iterations) in 25.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.590221770926e+05, best bound 8.589366879433e+05, gap 0.0100%