Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:44:30 2013 Optimize a model with 693 rows, 39753 columns and 79443 nonzeros Presolve time: 0.06s Presolved: 693 rows, 39753 columns, 79443 nonzeros Variable types: 39690 continuous, 63 integer (63 binary) Root relaxation: objective 6.406551e+04, 1289 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 64065.5108 0 8 - 64065.5108 - - 0s H 0 0 66181.000000 64065.5108 3.20% - 0s H 0 0 65800.000000 64065.5108 2.64% - 0s H 0 0 64667.000000 64065.5108 0.93% - 0s 0 0 64335.8986 0 4 64667.0000 64335.8986 0.51% - 0s 0 0 64335.8986 0 8 64667.0000 64335.8986 0.51% - 0s 0 0 64335.8986 0 4 64667.0000 64335.8986 0.51% - 0s 0 0 64354.6001 0 4 64667.0000 64354.6001 0.48% - 0s 0 0 64378.4334 0 4 64667.0000 64378.4334 0.45% - 0s 0 0 64380.8039 0 3 64667.0000 64380.8039 0.44% - 0s 0 0 64381.2097 0 3 64667.0000 64381.2097 0.44% - 0s 0 0 64382.0252 0 3 64667.0000 64382.0252 0.44% - 0s 0 0 64382.3642 0 3 64667.0000 64382.3642 0.44% - 0s 0 2 64388.5249 0 3 64667.0000 64388.5249 0.43% - 1s H 18 6 64651.043723 64452.4270 0.31% 27.8 1s H 19 7 64633.598249 64452.4270 0.28% 28.2 1s H 20 8 64619.316667 64452.4270 0.26% 27.0 1s H 21 9 64617.820144 64452.4270 0.26% 26.4 1s * 25 6 12 64513.000000 64452.4270 0.09% 24.8 1s Cutting planes: Implied bound: 87 Flow cover: 1 Explored 29 nodes (3927 simplex iterations) in 1.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.451300000000e+04, best bound 6.450693734028e+04, gap 0.0094%