Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:13:33 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 7.549525e+04, 2001 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 75495.2537 0 9 - 75495.2537 - - 0s H 0 0 79962.000000 75495.2537 5.59% - 0s H 0 0 77961.000000 75495.2537 3.16% - 0s 0 0 76045.2445 0 5 77961.0000 76045.2445 2.46% - 0s 0 0 76062.6574 0 5 77961.0000 76062.6574 2.43% - 0s 0 0 76072.4974 0 5 77961.0000 76072.4974 2.42% - 0s 0 0 76074.2176 0 6 77961.0000 76074.2176 2.42% - 0s 0 0 76074.6042 0 6 77961.0000 76074.6042 2.42% - 0s 0 0 76075.5422 0 5 77961.0000 76075.5422 2.42% - 0s 0 0 76075.5422 0 5 77961.0000 76075.5422 2.42% - 1s 0 0 76075.5422 0 5 77961.0000 76075.5422 2.42% - 1s H 0 0 76914.000000 76075.5422 1.09% - 1s 0 0 76075.5422 0 9 76914.0000 76075.5422 1.09% - 1s 0 0 76075.5422 0 5 76914.0000 76075.5422 1.09% - 1s 0 0 76075.5422 0 5 76914.0000 76075.5422 1.09% - 1s 0 0 76075.5422 0 5 76914.0000 76075.5422 1.09% - 1s 0 0 76075.5422 0 5 76914.0000 76075.5422 1.09% - 1s 0 0 76075.7357 0 6 76914.0000 76075.7357 1.09% - 1s 0 0 76076.2597 0 5 76914.0000 76076.2597 1.09% - 2s 0 0 76076.2597 0 5 76914.0000 76076.2597 1.09% - 2s 0 0 76076.3673 0 5 76914.0000 76076.3673 1.09% - 2s 0 2 76091.3048 0 5 76914.0000 76091.3048 1.07% - 2s H 12 8 76599.000000 76200.4636 0.52% 61.1 2s * 14 4 13 76468.000000 76200.4636 0.35% 54.2 2s Cutting planes: Implied bound: 87 Flow cover: 9 Explored 21 nodes (6273 simplex iterations) in 2.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.646800000000e+04, best bound 7.646800000000e+04, gap 0.0%