Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:41:20 2013 Optimize a model with 39184 rows, 38564 columns and 153884 nonzeros Presolve removed 62 rows and 0 columns Presolve time: 0.17s Presolved: 39122 rows, 38564 columns, 153822 nonzeros Variable types: 38502 continuous, 62 integer (62 binary) Root relaxation: objective 4.973156e+04, 4325 iterations, 1.97 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 49731.5562 0 47 - 49731.5562 - - 2s H 0 0 72590.000000 49731.5562 31.5% - 3s 0 0 58848.2125 0 18 72590.0000 58848.2125 18.9% - 6s H 0 0 64646.000000 58848.2125 8.97% - 6s 0 0 59986.0363 0 7 64646.0000 59986.0363 7.21% - 7s H 0 0 62810.000000 59986.0363 4.50% - 7s H 0 0 60288.000000 59986.0363 0.50% - 8s 0 0 60132.7126 0 5 60288.0000 60132.7126 0.26% - 8s 0 0 60140.3016 0 5 60288.0000 60140.3016 0.24% - 8s H 0 0 60251.000000 60140.3016 0.18% - 8s 0 0 60212.0938 0 1 60251.0000 60212.0938 0.06% - 9s 0 0 60212.0938 0 30 60251.0000 60212.0938 0.06% - 11s 0 0 60212.0938 0 7 60251.0000 60212.0938 0.06% - 13s 0 0 60212.0938 0 5 60251.0000 60212.0938 0.06% - 13s 0 0 60212.0938 0 3 60251.0000 60212.0938 0.06% - 14s 0 0 60212.0938 0 1 60251.0000 60212.0938 0.06% - 14s 0 2 60214.7012 0 1 60251.0000 60214.7012 0.06% - 14s * 1 1 1 60231.000000 60231.0000 0.0% 113 14s Cutting planes: Gomory: 3 Implied bound: 41 Explored 2 nodes (15137 simplex iterations) in 14.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.023100000000e+04, best bound 6.023100000000e+04, gap 0.0%