Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:43:08 2013 Optimize a model with 9919 rows, 1521 columns and 30420 nonzeros Presolve removed 2117 rows and 808 columns Presolve time: 0.07s Presolved: 7802 rows, 713 columns, 23833 nonzeros Variable types: 12 continuous, 701 integer (701 binary) Found heuristic solution: objective 31798.000000 Root relaxation: objective 2.541373e+04, 1966 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 25413.7273 0 9 31798.0000 25413.7273 20.1% - 0s H 0 0 25431.000000 25413.7273 0.07% - 0s H 0 0 25425.000000 25413.7273 0.04% - 0s H 0 0 25423.000000 25413.7273 0.04% - 0s 0 0 25414.2119 0 24 25423.0000 25414.2119 0.03% - 0s 0 0 25414.2119 0 8 25423.0000 25414.2119 0.03% - 0s 0 0 25414.7452 0 29 25423.0000 25414.7452 0.03% - 0s 0 0 25415.2518 0 26 25423.0000 25415.2518 0.03% - 0s 0 0 25415.9526 0 25 25423.0000 25415.9526 0.03% - 0s 0 0 25416.4350 0 29 25423.0000 25416.4350 0.03% - 0s 0 0 25416.5757 0 26 25423.0000 25416.5757 0.03% - 0s 0 2 25416.6444 0 26 25423.0000 25416.6444 0.02% - 0s H 1 2 25419.000000 25416.6444 0.01% 9.0 0s Explored 2 nodes (2303 simplex iterations) in 0.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.541900000000e+04, best bound 2.541700000000e+04, gap 0.0079%