Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:36:33 2013 Optimize a model with 1400 rows, 102300 columns and 206400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.22s Presolved: 1300 rows, 102200 columns, 204300 nonzeros Variable types: 102200 continuous, 0 integer (0 binary) Root relaxation: objective 8.654105e+05, 7332 iterations, 0.68 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 865410.545 0 2 - 865410.545 - - 1s H 0 0 983809.60150 865410.545 12.0% - 1s 0 2 865410.545 0 2 983809.601 865410.545 12.0% - 2s 12 14 874659.246 6 2 983809.601 866564.739 11.9% 267 5s * 31 15 16 867835.85010 866564.739 0.15% 183 8s 73 15 866700.254 11 1 867835.850 866599.521 0.14% 96.5 10s * 105 3 27 866849.82663 866599.521 0.03% 68.0 10s Explored 107 nodes (14508 simplex iterations) in 10.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.668498266279e+05, best bound 8.667706496003e+05, gap 0.0091%