Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:44:20 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 6.932037e+04, 1373 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 69320.3731 0 9 - 69320.3731 - - 0s H 0 0 72361.000000 69320.3731 4.20% - 0s 0 0 69511.5178 0 6 72361.0000 69511.5178 3.94% - 0s 0 0 69541.8289 0 5 72361.0000 69541.8289 3.90% - 0s H 0 0 71886.000000 69541.8289 3.26% - 0s 0 0 69559.7899 0 3 71886.0000 69559.7899 3.24% - 0s H 0 0 70859.557678 69559.7899 1.83% - 0s H 0 0 70746.000000 69559.7899 1.68% - 0s 0 0 69559.8650 0 3 70746.0000 69559.8650 1.68% - 0s 0 0 69560.6030 0 5 70746.0000 69560.6030 1.68% - 0s H 0 0 70733.000000 69560.6030 1.66% - 0s 0 0 69563.7691 0 4 70733.0000 69563.7691 1.65% - 0s 0 0 69563.7691 0 4 70733.0000 69563.7691 1.65% - 0s 0 0 69563.7691 0 4 70733.0000 69563.7691 1.65% - 0s 0 0 69563.8893 0 5 70733.0000 69563.8893 1.65% - 0s H 0 0 70699.000000 69563.8893 1.61% - 0s H 0 0 69902.000000 69563.8893 0.48% - 1s 0 0 69563.8893 0 8 69902.0000 69563.8893 0.48% - 1s 0 0 69563.8893 0 5 69902.0000 69563.8893 0.48% - 1s 0 0 69563.8893 0 5 69902.0000 69563.8893 0.48% - 1s 0 0 69563.8893 0 4 69902.0000 69563.8893 0.48% - 1s 0 0 69563.8893 0 3 69902.0000 69563.8893 0.48% - 1s 0 0 69563.8893 0 4 69902.0000 69563.8893 0.48% - 1s 0 0 69563.8893 0 4 69902.0000 69563.8893 0.48% - 1s 0 0 69563.8893 0 5 69902.0000 69563.8893 0.48% - 1s 0 0 69563.8893 0 4 69902.0000 69563.8893 0.48% - 1s 0 0 69563.8893 0 4 69902.0000 69563.8893 0.48% - 1s 0 0 69563.8893 0 4 69902.0000 69563.8893 0.48% - 1s 0 2 69592.0796 0 4 69902.0000 69592.0796 0.44% - 1s * 23 6 10 69874.000000 69681.2404 0.28% 47.2 2s Cutting planes: Implied bound: 93 Flow cover: 9 Explored 30 nodes (4404 simplex iterations) in 2.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.987400000000e+04, best bound 6.987400000000e+04, gap 0.0%