Gurobi 5.0.1 (linux64) logging started Wed Nov 28 03:52:04 2012 Optimize a model with 36071 rows, 36003 columns and 141768 nonzeros Presolve removed 1106 rows and 1106 columns Presolve time: 0.21s Presolved: 34965 rows, 34897 columns, 139556 nonzeros Variable types: 33775 continuous, 1122 integer (1122 binary) Found heuristic solution: objective 5747.0000000 Found heuristic solution: objective 2523.0000000 Found heuristic solution: objective 2227.0000000 Root relaxation: objective 1.286000e+03, 20710 iterations, 2.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1286.0000000 1286.00000 0.0% - 2s Explored 0 nodes (21246 simplex iterations) in 2.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.286000000000e+03, best bound 1.286000000000e+03, gap 0.0%