Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:40:50 2013 Optimize a model with 682 rows, 38502 columns and 76942 nonzeros Presolve time: 0.05s Presolved: 682 rows, 38502 columns, 76942 nonzeros Variable types: 38440 continuous, 62 integer (62 binary) Root relaxation: objective 6.894937e+04, 1685 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 68949.3717 0 9 - 68949.3717 - - 0s H 0 0 74365.000000 68949.3717 7.28% - 0s H 0 0 70960.000000 68949.3717 2.83% - 0s 0 0 69264.3400 0 6 70960.0000 69264.3400 2.39% - 0s 0 0 69310.8071 0 4 70960.0000 69310.8071 2.32% - 0s 0 0 69314.9852 0 6 70960.0000 69314.9852 2.32% - 0s 0 0 69316.7286 0 5 70960.0000 69316.7286 2.32% - 0s 0 0 69316.7286 0 5 70960.0000 69316.7286 2.32% - 0s H 0 0 69894.000000 69316.7286 0.83% - 0s 0 0 69316.7286 0 9 69894.0000 69316.7286 0.83% - 0s 0 0 69316.7286 0 6 69894.0000 69316.7286 0.83% - 1s 0 0 69316.7286 0 5 69894.0000 69316.7286 0.83% - 1s 0 0 69316.7286 0 4 69894.0000 69316.7286 0.83% - 1s 0 0 69316.7286 0 6 69894.0000 69316.7286 0.83% - 1s 0 0 69316.7757 0 5 69894.0000 69316.7757 0.83% - 1s 0 0 69316.7757 0 5 69894.0000 69316.7757 0.83% - 1s 0 0 69316.8182 0 5 69894.0000 69316.8182 0.83% - 1s 0 2 69323.0108 0 5 69894.0000 69323.0108 0.82% - 1s H 14 10 69602.000000 69381.2279 0.32% 42.9 1s * 16 9 14 69562.000000 69381.2279 0.26% 40.2 1s * 32 13 7 69520.000000 69403.6249 0.17% 41.1 2s Cutting planes: Implied bound: 98 Flow cover: 11 Explored 62 nodes (5923 simplex iterations) in 2.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.952000000000e+04, best bound 6.951349401914e+04, gap 0.0094%