Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:25:18 2013 Optimize a model with 627 rows, 32547 columns and 65037 nonzeros Presolve time: 0.04s Presolved: 627 rows, 32547 columns, 65037 nonzeros Variable types: 32490 continuous, 57 integer (57 binary) Root relaxation: objective 5.961894e+04, 1182 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 59618.9444 0 7 - 59618.9444 - - 0s H 0 0 62259.000000 59618.9444 4.24% - 0s H 0 0 60253.000000 59618.9444 1.05% - 0s 0 0 59768.2017 0 6 60253.0000 59768.2017 0.80% - 0s 0 0 59798.1217 0 5 60253.0000 59798.1217 0.75% - 0s 0 0 59801.0371 0 5 60253.0000 59801.0371 0.75% - 0s 0 0 59802.4635 0 4 60253.0000 59802.4635 0.75% - 0s 0 0 59802.4635 0 4 60253.0000 59802.4635 0.75% - 0s 0 0 59802.4635 0 4 60253.0000 59802.4635 0.75% - 0s 0 0 59803.8407 0 3 60253.0000 59803.8407 0.75% - 0s 0 0 59803.8407 0 3 60253.0000 59803.8407 0.75% - 0s 0 0 59803.8489 0 3 60253.0000 59803.8489 0.75% - 0s 0 0 59804.3217 0 3 60253.0000 59804.3217 0.74% - 0s H 0 0 60057.000000 59804.3217 0.42% - 0s 0 0 59804.3217 0 7 60057.0000 59804.3217 0.42% - 0s 0 0 59804.3217 0 6 60057.0000 59804.3217 0.42% - 0s 0 0 59804.3217 0 5 60057.0000 59804.3217 0.42% - 0s 0 0 59804.3217 0 5 60057.0000 59804.3217 0.42% - 1s 0 0 59804.3217 0 4 60057.0000 59804.3217 0.42% - 1s 0 0 59804.3217 0 4 60057.0000 59804.3217 0.42% - 1s 0 0 59804.3217 0 4 60057.0000 59804.3217 0.42% - 1s 0 0 59804.3217 0 4 60057.0000 59804.3217 0.42% - 1s 0 2 59807.5076 0 4 60057.0000 59807.5076 0.42% - 1s * 16 4 10 59982.000000 59873.1225 0.18% 29.6 1s * 22 0 4 59973.000000 59973.0000 0.0% 30.6 1s Cutting planes: Implied bound: 77 Flow cover: 8 Explored 23 nodes (3177 simplex iterations) in 1.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.997300000000e+04, best bound 5.997300000000e+04, gap 0.0%