Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:19:35 2013 Optimize a model with 1350 rows, 400 columns and 4200 nonzeros Presolve removed 303 rows and 205 columns Presolve time: 0.01s Presolved: 1047 rows, 195 columns, 3327 nonzeros Variable types: 11 continuous, 184 integer (184 binary) Found heuristic solution: objective 9957.0000000 Root relaxation: objective 7.518846e+03, 855 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 7518.84615 0 5 9957.00000 7518.84615 24.5% - 0s H 0 0 7530.0000000 7518.84615 0.15% - 0s 0 0 7519.05734 0 9 7530.00000 7519.05734 0.15% - 0s 0 0 7519.05734 0 4 7530.00000 7519.05734 0.15% - 0s H 0 0 7524.0000000 7519.05734 0.07% - 0s 0 0 7519.38510 0 11 7524.00000 7519.38510 0.06% - 0s 0 1 7519.95743 0 11 7524.00000 7519.95743 0.05% - 0s Explored 3 nodes (915 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.524000000000e+03, best bound 7.524000000000e+03, gap 0.0%