Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:13:37 2013 Optimize a model with 759 rows, 47679 columns and 95289 nonzeros Presolve time: 0.07s Presolved: 759 rows, 47679 columns, 95289 nonzeros Variable types: 47610 continuous, 69 integer (69 binary) Root relaxation: objective 7.100820e+04, 1528 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 71008.2030 0 5 - 71008.2030 - - 0s H 0 0 74677.000000 71008.2030 4.91% - 0s 0 0 71175.7838 0 5 74677.0000 71175.7838 4.69% - 0s 0 0 71189.4629 0 3 74677.0000 71189.4629 4.67% - 0s H 0 0 73489.853219 71189.4629 3.13% - 0s H 0 0 73187.000000 71189.4629 2.73% - 0s 0 0 71190.3685 0 4 73187.0000 71190.3685 2.73% - 0s H 0 0 73176.000000 71190.3685 2.71% - 0s 0 0 71192.7218 0 6 73176.0000 71192.7218 2.71% - 0s 0 0 71194.7436 0 5 73176.0000 71194.7436 2.71% - 0s 0 0 71194.7436 0 5 73176.0000 71194.7436 2.71% - 0s 0 0 71194.7436 0 5 73176.0000 71194.7436 2.71% - 0s 0 0 71194.7436 0 5 73176.0000 71194.7436 2.71% - 0s 0 2 71218.9497 0 5 73176.0000 71218.9497 2.67% - 1s H 5 5 72466.050000 71387.8277 1.49% 58.4 1s H 6 6 71936.000000 71387.8277 0.76% 56.8 1s H 7 6 71930.552747 71387.8277 0.75% 53.4 1s H 9 7 71608.150000 71387.8277 0.31% 48.4 1s * 13 7 9 71601.000000 71387.8277 0.30% 54.8 1s H 28 12 71516.000000 71409.5238 0.15% 45.8 1s * 30 12 12 71499.000000 71409.5238 0.13% 44.5 1s Cutting planes: Implied bound: 87 Flow cover: 6 Explored 44 nodes (3298 simplex iterations) in 1.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.149900000000e+04, best bound 7.149195000000e+04, gap 0.0099%