Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:20:58 2013 Optimize a model with 3400 rows, 102200 columns and 208100 nonzeros Presolve removed 400 rows and 300 columns Presolve time: 0.74s Presolved: 3000 rows, 101900 columns, 206500 nonzeros Variable types: 101000 continuous, 900 integer (900 binary) Root relaxation: objective 8.570461e+05, 8622 iterations, 1.69 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 - - 2s H 0 0 896638.58028 857046.104 4.42% - 3s 0 2 857088.450 0 1 896638.580 857088.450 4.41% - 4s 1 3 857807.281 1 2 896638.580 857807.281 4.33% 431 5s 23 25 859031.287 23 2 896638.580 858192.222 4.29% 108 10s H 27 25 866561.93486 858192.222 0.97% 100 11s 50 49 859890.101 50 1 866561.935 858192.222 0.97% 74.4 15s H 54 39 865225.35908 858192.222 0.81% 71.1 16s H 71 24 862241.93450 858192.222 0.47% 63.2 19s 74 24 862138.103 73 1 862241.935 858192.222 0.47% 61.5 20s H 79 2 859244.52823 858312.493 0.11% 62.6 20s H 113 21 859187.81371 858490.754 0.08% 51.8 24s * 116 20 21 859168.59169 858490.754 0.08% 51.0 24s 120 20 858530.667 5 1 859168.592 858530.667 0.07% 54.7 25s H 176 13 859030.36582 858776.234 0.03% 43.7 26s H 181 15 859020.10099 858808.219 0.02% 42.9 26s H 182 15 859016.88456 858808.219 0.02% 42.7 27s * 184 15 20 859009.51298 858808.219 0.02% 42.3 27s Explored 193 nodes (16533 simplex iterations) in 27.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.590095129826e+05, best bound 8.589257730575e+05, gap 0.0097%