Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:56:18 2013 Optimize a model with 396 rows, 12996 columns and 25956 nonzeros Presolve time: 0.02s Presolved: 396 rows, 12996 columns, 25956 nonzeros Variable types: 12960 continuous, 36 integer (36 binary) Root relaxation: objective 4.470592e+04, 748 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44705.9199 0 5 - 44705.9199 - - 0s H 0 0 45161.000000 44705.9199 1.01% - 0s 0 0 45075.2602 0 3 45161.0000 45075.2602 0.19% - 0s H 0 0 45110.000000 45075.2602 0.08% - 0s 0 0 45078.4278 0 2 45110.0000 45078.4278 0.07% - 0s 0 0 45078.4278 0 2 45110.0000 45078.4278 0.07% - 0s 0 0 45078.4278 0 2 45110.0000 45078.4278 0.07% - 0s 0 0 45107.0476 0 2 45110.0000 45107.0476 0.01% - 0s Cutting planes: Implied bound: 43 Flow cover: 3 Explored 0 nodes (909 simplex iterations) in 0.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.511000000000e+04, best bound 4.510704761905e+04, gap 0.0065%