Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:04 2013 Optimize a model with 1400 rows, 105300 columns and 215400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.40s Presolved: 1300 rows, 105200 columns, 210300 nonzeros Variable types: 105200 continuous, 0 integer (0 binary) Root relaxation: objective 8.258498e+05, 8463 iterations, 2.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 825849.833 0 1 - 825849.833 - - 2s H 0 0 851121.35006 825849.833 2.97% - 3s 0 2 825849.833 0 1 851121.350 825849.833 2.97% - 4s 1 3 827475.822 1 3 851121.350 825849.833 2.97% 437 5s * 8 6 4 826102.66657 826102.667 0.0% 281 6s Explored 9 nodes (10709 simplex iterations) in 6.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.261026665679e+05, best bound 8.261026665679e+05, gap 0.0000%