Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:53:08 2013 Optimize a model with 43030 rows, 42380 columns and 169130 nonzeros Presolve removed 65 rows and 0 columns Presolve time: 0.19s Presolved: 42965 rows, 42380 columns, 169065 nonzeros Variable types: 42315 continuous, 65 integer (65 binary) Root relaxation: objective 5.377456e+04, 5359 iterations, 2.78 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 53774.5612 0 52 - 53774.5612 - - 3s H 0 0 78697.000000 53774.5612 31.7% - 4s 0 0 64865.6686 0 12 78697.0000 64865.6686 17.6% - 8s H 0 0 77386.841562 64865.6686 16.2% - 8s H 0 0 72331.000000 64865.6686 10.3% - 8s 0 0 65794.7431 0 12 72331.0000 65794.7431 9.04% - 9s H 0 0 70507.000000 65794.7431 6.68% - 9s 0 0 65916.7024 0 5 70507.0000 65916.7024 6.51% - 10s H 0 0 69559.000000 65916.7024 5.24% - 10s 0 0 65924.4548 0 4 69559.0000 65924.4548 5.23% - 10s H 0 0 69473.885916 65924.4548 5.11% - 10s H 0 0 68951.000000 65924.4548 4.39% - 10s H 0 0 66547.000000 65924.4548 0.94% - 10s 0 2 65927.2254 0 4 66547.0000 65927.2254 0.93% - 11s H 10 7 66533.263158 66028.9251 0.76% 85.5 12s H 11 6 66129.000000 66028.9251 0.15% 78.6 12s * 25 3 13 66096.000000 66083.3500 0.02% 63.2 13s Cutting planes: Implied bound: 64 Explored 28 nodes (11991 simplex iterations) in 13.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.609600000000e+04, best bound 6.609293123733e+04, gap 0.0046%