Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:09:12 2013 Optimize a model with 539 rows, 24059 columns and 48069 nonzeros Presolve time: 0.03s Presolved: 539 rows, 24059 columns, 48069 nonzeros Variable types: 24010 continuous, 49 integer (49 binary) Root relaxation: objective 5.366068e+04, 882 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 53660.6773 0 9 - 53660.6773 - - 0s H 0 0 56378.000000 53660.6773 4.82% - 0s H 0 0 54295.000000 53660.6773 1.17% - 0s 0 0 54040.5675 0 5 54295.0000 54040.5675 0.47% - 0s 0 0 54082.7837 0 5 54295.0000 54082.7837 0.39% - 0s 0 0 54087.1538 0 6 54295.0000 54087.1538 0.38% - 0s 0 0 54088.2403 0 4 54295.0000 54088.2403 0.38% - 0s 0 0 54088.3316 0 4 54295.0000 54088.3316 0.38% - 0s 0 0 54089.1020 0 4 54295.0000 54089.1020 0.38% - 0s 0 0 54089.4523 0 5 54295.0000 54089.4523 0.38% - 0s 0 0 54105.3126 0 4 54295.0000 54105.3126 0.35% - 0s 0 0 54105.3126 0 8 54295.0000 54105.3126 0.35% - 0s 0 0 54105.3126 0 4 54295.0000 54105.3126 0.35% - 0s 0 0 54105.3126 0 3 54295.0000 54105.3126 0.35% - 0s 0 0 54105.3126 0 3 54295.0000 54105.3126 0.35% - 0s 0 0 54106.1166 0 3 54295.0000 54106.1166 0.35% - 0s 0 0 54106.9339 0 4 54295.0000 54106.9339 0.35% - 0s 0 0 54106.9349 0 3 54295.0000 54106.9349 0.35% - 0s 0 2 54116.4150 0 3 54295.0000 54116.4150 0.33% - 0s * 8 5 7 54155.000000 54116.4150 0.07% 18.4 0s Cutting planes: Implied bound: 73 Flow cover: 2 Explored 13 nodes (2398 simplex iterations) in 0.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.415500000000e+04, best bound 5.415500000000e+04, gap 0.0%