Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:34:00 2013 Optimize a model with 6600 rows, 110300 columns and 235500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.59s Presolved: 6500 rows, 110200 columns, 230400 nonzeros Variable types: 105200 continuous, 5000 integer (5000 binary) Root relaxation: objective 9.053666e+05, 8843 iterations, 0.92 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 905366.638 0 4 - 905366.638 - - 1s H 0 0 933001.06450 905366.638 2.96% - 3s 0 0 905426.488 0 4 933001.064 905426.488 2.96% - 4s 0 0 905457.950 0 4 933001.064 905457.950 2.95% - 4s 0 0 905461.766 0 4 933001.064 905461.766 2.95% - 5s 0 0 905461.929 0 4 933001.064 905461.929 2.95% - 5s 0 0 905463.257 0 4 933001.064 905463.257 2.95% - 5s 0 0 905463.542 0 4 933001.064 905463.542 2.95% - 6s 0 0 905463.542 0 4 933001.064 905463.542 2.95% - 6s 0 0 905464.197 0 4 933001.064 905464.197 2.95% - 7s 0 0 905465.349 0 4 933001.064 905465.349 2.95% - 7s 0 0 905466.562 0 4 933001.064 905466.562 2.95% - 7s 0 0 905466.562 0 4 933001.064 905466.562 2.95% - 8s 0 0 905466.610 0 4 933001.064 905466.610 2.95% - 8s 0 0 905467.191 0 4 933001.064 905467.191 2.95% - 9s 0 0 905467.549 0 4 933001.064 905467.549 2.95% - 9s 0 0 905468.740 0 4 933001.064 905468.740 2.95% - 9s 0 0 905469.015 0 4 933001.064 905469.015 2.95% - 10s 0 0 905469.257 0 4 933001.064 905469.257 2.95% - 10s 0 0 905469.563 0 4 933001.064 905469.563 2.95% - 10s 0 0 905470.101 0 4 933001.064 905470.101 2.95% - 11s 0 0 905470.101 0 4 933001.064 905470.101 2.95% - 11s 0 0 905470.101 0 4 933001.064 905470.101 2.95% - 12s 0 0 905470.101 0 4 933001.064 905470.101 2.95% - 12s 0 0 905470.168 0 4 933001.064 905470.168 2.95% - 13s 0 0 905470.259 0 4 933001.064 905470.259 2.95% - 13s 0 0 905470.259 0 4 933001.064 905470.259 2.95% - 14s 0 2 905470.259 0 4 933001.064 905470.259 2.95% - 15s 10 12 911132.098 5 2 933001.064 906347.749 2.86% 519 20s 29 31 907894.738 15 2 933001.064 906347.749 2.86% 306 25s H 54 30 911023.34109 906347.749 0.51% 238 30s * 58 14 29 908018.35356 906347.749 0.18% 225 30s 81 10 907913.248 16 4 908018.354 906347.749 0.18% 185 35s Cutting planes: Implied bound: 14 Flow cover: 25 Explored 118 nodes (32379 simplex iterations) in 37.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.080183535562e+05, best bound 9.079658812284e+05, gap 0.0058%