Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:41:05 2013 Optimize a model with 935 rows, 72335 columns and 144585 nonzeros Presolve time: 0.11s Presolved: 935 rows, 72335 columns, 144585 nonzeros Variable types: 72250 continuous, 85 integer (85 binary) Root relaxation: objective 9.191950e+04, 2251 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 91919.5019 0 12 - 91919.5019 - - 0s H 0 0 101508.00000 91919.5019 9.45% - 0s H 0 0 94265.000000 91919.5019 2.49% - 0s 0 0 92383.8699 0 9 94265.0000 92383.8699 2.00% - 0s 0 0 92447.8180 0 9 94265.0000 92447.8180 1.93% - 0s 0 0 92447.8180 0 12 94265.0000 92447.8180 1.93% - 1s 0 0 92447.8180 0 9 94265.0000 92447.8180 1.93% - 1s 0 0 92453.3389 0 9 94265.0000 92453.3389 1.92% - 1s 0 0 92474.8227 0 5 94265.0000 92474.8227 1.90% - 1s 0 0 92478.0952 0 7 94265.0000 92478.0952 1.90% - 1s 0 0 92481.2773 0 6 94265.0000 92481.2773 1.89% - 1s 0 0 92481.8416 0 7 94265.0000 92481.8416 1.89% - 1s 0 0 92482.4661 0 5 94265.0000 92482.4661 1.89% - 1s 0 0 92482.9989 0 6 94265.0000 92482.9989 1.89% - 2s H 0 0 93303.000000 92482.9989 0.88% - 2s 0 2 92489.4559 0 6 93303.0000 92489.4559 0.87% - 2s H 7 6 93264.548872 92725.7827 0.58% 62.1 2s H 9 6 92890.310345 92727.1374 0.18% 51.1 2s H 11 7 92863.071429 92727.1374 0.15% 47.1 2s * 20 13 18 92825.000000 92727.1374 0.11% 36.5 3s Cutting planes: Implied bound: 177 Flow cover: 17 Explored 56 nodes (7726 simplex iterations) in 3.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.282500000000e+04, best bound 9.282500000000e+04, gap 0.0%