Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:50:43 2013 Optimize a model with 280 rows, 6060 columns and 14080 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.01s Presolved: 260 rows, 6040 columns, 12060 nonzeros Variable types: 6040 continuous, 0 integer (0 binary) Root relaxation: objective 3.573401e+04, 378 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35734.0139 0 3 - 35734.0139 - - 0s 0 2 35734.0139 0 3 - 35734.0139 - - 0s * 42 12 21 36427.321654 36014.0237 1.13% 17.1 0s * 70 9 15 36178.483421 36014.0237 0.45% 13.1 0s * 76 4 12 36173.469392 36172.4450 0.00% 12.5 0s Explored 77 nodes (1325 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.617346939151e+04, best bound 3.617244496552e+04, gap 0.0028%