Gurobi 5.0.1 (linux64) logging started Mon Feb 4 17:17:05 2013 Optimize a model with 5488 rows, 1024 columns and 16896 nonzeros Presolve removed 1132 rows and 539 columns Presolve time: 0.03s Presolved: 4356 rows, 485 columns, 13385 nonzeros Variable types: 11 continuous, 474 integer (474 binary) Found heuristic solution: objective 16943.000000 Root relaxation: objective 1.382454e+04, 1618 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13824.5411 0 6 16943.0000 13824.5411 18.4% - 0s H 0 0 13834.000000 13824.5411 0.07% - 0s H 0 0 13831.000000 13824.5411 0.05% - 0s 0 0 13828.7083 0 15 13831.0000 13828.7083 0.02% - 0s 0 0 13828.7083 0 5 13831.0000 13828.7083 0.02% - 0s 0 0 13828.7972 0 13 13831.0000 13828.7972 0.02% - 0s 0 1 13828.8000 0 13 13831.0000 13828.8000 0.02% - 0s Explored 5 nodes (1720 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.383100000000e+04, best bound 1.383000000000e+04, gap 0.0072%