Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:23:48 2013 Optimize a model with 6600 rows, 110300 columns and 235500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 1.16s Presolved: 6500 rows, 110200 columns, 230400 nonzeros Variable types: 105200 continuous, 5000 integer (5000 binary) Root relaxation: objective 8.654105e+05, 11458 iterations, 3.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 865410.545 0 4 - 865410.545 - - 4s 0 0 865465.265 0 4 - 865465.265 - - 8s 0 0 865505.558 0 4 - 865505.558 - - 9s 0 0 865507.703 0 4 - 865507.703 - - 10s 0 0 865507.716 0 4 - 865507.716 - - 11s 0 0 865508.336 0 4 - 865508.336 - - 11s 0 0 865509.638 0 4 - 865509.638 - - 12s 0 0 865509.638 0 4 - 865509.638 - - 13s 0 0 865510.001 0 4 - 865510.001 - - 13s 0 0 865510.896 0 4 - 865510.896 - - 14s 0 0 865511.371 0 4 - 865511.371 - - 14s 0 0 865511.787 0 4 - 865511.787 - - 15s 0 0 865512.388 0 4 - 865512.388 - - 16s 0 0 865513.282 0 4 - 865513.282 - - 16s 0 0 865513.622 0 4 - 865513.622 - - 17s 0 0 865513.825 0 4 - 865513.825 - - 17s 0 0 865514.235 0 4 - 865514.235 - - 18s 0 0 865514.369 0 4 - 865514.369 - - 18s 0 0 865514.639 0 4 - 865514.639 - - 19s 0 0 865514.672 0 4 - 865514.672 - - 20s 0 0 865514.776 0 4 - 865514.776 - - 21s 0 0 865514.842 0 4 - 865514.842 - - 22s 0 0 865514.866 0 4 - 865514.866 - - 23s 0 0 865514.889 0 4 - 865514.889 - - 24s 0 0 865514.889 0 4 - 865514.889 - - 25s 0 2 865514.889 0 4 - 865514.889 - - 33s 1 3 866599.521 1 4 - 865514.889 - 1542 36s 4 6 866550.441 2 4 - 866550.441 - 852 41s 9 11 870072.815 5 4 - 866564.739 - 453 45s 15 17 867289.706 8 2 - 866564.739 - 368 50s 20 22 878771.579 10 4 - 866564.739 - 362 56s 23 25 867484.093 12 2 - 866564.739 - 352 60s 28 30 894441.545 14 4 - 866564.739 - 392 67s * 31 15 16 867835.85010 866564.739 0.15% 379 69s 33 11 867522.510 3 4 867835.850 866564.739 0.15% 369 70s 71 13 cutoff 11 867835.850 866599.521 0.14% 194 75s * 81 2 19 866849.82663 866599.521 0.03% 170 76s Cutting planes: Implied bound: 14 Flow cover: 23 Explored 95 nodes (31510 simplex iterations) in 77.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.668498266279e+05, best bound 8.667678565254e+05, gap 0.0095%