Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:40:34 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 5.946533e+04, 1041 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 59465.3257 0 10 - 59465.3257 - - 0s H 0 0 63875.000000 59465.3257 6.90% - 0s 0 0 60010.7943 0 5 63875.0000 60010.7943 6.05% - 0s H 0 0 63659.000000 60010.7943 5.73% - 0s 0 0 60118.5513 0 5 63659.0000 60118.5513 5.56% - 0s H 0 0 63191.000000 60118.5513 4.86% - 0s H 0 0 60251.000000 60118.5513 0.22% - 0s 0 0 60131.4962 0 4 60251.0000 60131.4962 0.20% - 0s 0 0 60131.4962 0 11 60251.0000 60131.4962 0.20% - 0s 0 0 60131.4962 0 5 60251.0000 60131.4962 0.20% - 0s 0 0 60131.4962 0 5 60251.0000 60131.4962 0.20% - 0s 0 0 60131.4962 0 5 60251.0000 60131.4962 0.20% - 0s 0 0 60131.7010 0 4 60251.0000 60131.7010 0.20% - 0s 0 0 60132.8228 0 4 60251.0000 60132.8228 0.20% - 0s 0 0 60140.0858 0 4 60251.0000 60140.0858 0.18% - 0s 0 0 60140.1860 0 4 60251.0000 60140.1860 0.18% - 0s 0 0 60140.2589 0 5 60251.0000 60140.2589 0.18% - 0s 0 0 60140.2663 0 5 60251.0000 60140.2663 0.18% - 0s 0 0 60140.3110 0 4 60251.0000 60140.3110 0.18% - 1s 0 2 60144.6640 0 4 60251.0000 60144.6640 0.18% - 1s * 6 1 4 60231.000000 60231.0000 0.0% 45.0 1s Cutting planes: Implied bound: 76 Flow cover: 4 Explored 7 nodes (2609 simplex iterations) in 1.14 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%