Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:18:06 2013 Optimize a model with 1215 rows, 20610 columns and 1203247 nonzeros Presolve removed 5 rows and 0 columns Presolve time: 1.10s Presolved: 1210 rows, 20610 columns, 1202962 nonzeros Variable types: 0 continuous, 20610 integer (20610 binary) Found heuristic solution: objective 10881.000000 Root relaxation: objective 8.524000e+03, 5901 iterations, 3.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 8524.0000000 8524.00000 0.0% - 4s Explored 0 nodes (5901 simplex iterations) in 4.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.524000000000e+03, best bound 8.524000000000e+03, gap 0.0%