Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:14:33 2013 Optimize a model with 60214 rows, 59444 columns and 237314 nonzeros Presolve removed 77 rows and 0 columns Presolve time: 0.27s Presolved: 60137 rows, 59444 columns, 237237 nonzeros Variable types: 59367 continuous, 77 integer (77 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 6990 6.6760830e+04 2.180821e+03 0.000000e+00 5s 7449 6.6799669e+04 0.000000e+00 0.000000e+00 6s Root relaxation: objective 6.679967e+04, 7449 iterations, 5.96 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66799.6685 0 64 - 66799.6685 - - 6s H 0 0 111686.00000 66799.6685 40.2% - 12s 0 0 83555.0754 0 16 111686.000 83555.0754 25.2% - 22s H 0 0 109197.41991 83555.0754 23.5% - 22s H 0 0 95653.000000 83555.0754 12.6% - 22s 0 0 87806.5472 0 8 95653.0000 87806.5472 8.20% - 25s H 0 0 95558.754859 87806.5472 8.11% - 25s H 0 0 91442.000000 87806.5472 3.98% - 25s 0 0 87871.9447 0 6 91442.0000 87871.9447 3.90% - 25s H 0 0 89703.000000 87871.9447 2.04% - 25s H 0 0 88546.000000 87871.9447 0.76% - 25s 0 2 87875.1401 0 6 88546.0000 87875.1401 0.76% - 27s * 7 7 6 88206.000000 87975.3703 0.26% 397 29s 17 5 cutoff 5 88206.0000 87995.3621 0.24% 279 30s H 28 0 88178.000000 88029.0179 0.17% 262 31s * 34 2 8 88177.000000 88165.7632 0.01% 253 32s Cutting planes: Gomory: 1 Implied bound: 72 MIR: 2 Explored 39 nodes (26083 simplex iterations) in 32.65 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.817700000000e+04, best bound 8.817700000000e+04, gap 0.0%