Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:15:22 2013 Optimize a model with 48438 rows, 47748 columns and 190578 nonzeros Presolve removed 69 rows and 0 columns Presolve time: 0.21s Presolved: 48369 rows, 47748 columns, 190509 nonzeros Variable types: 47679 continuous, 69 integer (69 binary) Root relaxation: objective 5.679271e+04, 5698 iterations, 3.67 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 56792.7077 0 57 - 56792.7077 - - 4s H 0 0 89727.000000 56792.7077 36.7% - 7s 0 0 68163.8908 0 13 89727.0000 68163.8908 24.0% - 13s H 0 0 79506.000000 68163.8908 14.3% - 13s 0 0 70932.6086 0 6 79506.0000 70932.6086 10.8% - 14s H 0 0 77542.329016 70932.6086 8.52% - 14s H 0 0 76608.000000 70932.6086 7.41% - 14s H 0 0 76289.000000 70932.6086 7.02% - 15s 0 0 71163.0152 0 5 76289.0000 71163.0152 6.72% - 15s 0 0 71194.8010 0 4 76289.0000 71194.8010 6.68% - 15s H 0 0 73500.899231 71194.8010 3.14% - 15s H 0 0 73165.000000 71194.8010 2.69% - 15s H 0 0 72995.000000 71194.8010 2.47% - 16s 0 2 71200.7299 0 4 72995.0000 71200.7299 2.46% - 16s H 2 2 72644.255756 71405.8814 1.70% 157 16s H 3 3 72207.616223 71410.5335 1.10% 244 17s H 4 4 71716.075682 71425.2757 0.41% 208 17s H 12 9 71516.000000 71425.2757 0.13% 111 17s * 15 8 12 71499.000000 71425.2757 0.10% 107 17s Cutting planes: Implied bound: 66 Explored 29 nodes (13956 simplex iterations) in 18.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.149900000000e+04, best bound 7.149900000000e+04, gap 0.0%