Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:42:17 2013 Optimize a model with 1400 rows, 105300 columns and 215400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.18s Presolved: 1300 rows, 105200 columns, 210300 nonzeros Variable types: 105200 continuous, 0 integer (0 binary) Root relaxation: objective 8.654105e+05, 8348 iterations, 0.70 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 0 2 865410.545 0 2 - 865410.545 - - 2s 17 19 870711.299 9 2 - 866564.739 - 230 5s * 31 15 16 867835.85010 866564.739 0.15% 193 6s * 105 3 27 866849.82663 866599.521 0.03% 72.1 8s Explored 107 nodes (15947 simplex iterations) in 8.87 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%