Gurobi 5.0.1 (linux64) logging started Sun Dec 9 06:12:16 2012 Optimize a model with 570 rows, 540 columns and 1791 nonzeros Presolve removed 18 rows and 11 columns Presolve time: 0.01s Presolved: 552 rows, 529 columns, 1757 nonzeros Variable types: 353 continuous, 176 integer (176 binary) Root relaxation: objective 5.375754e+04, 303 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 53757.5430 0 99 - 53757.5430 - - 0s H 0 0 87667.000000 53757.5430 38.7% - 0s 0 0 64075.0813 0 47 87667.0000 64075.0813 26.9% - 0s 0 0 64479.4470 0 56 87667.0000 64479.4470 26.4% - 0s 0 0 64589.8204 0 40 87667.0000 64589.8204 26.3% - 0s 0 0 64623.4481 0 42 87667.0000 64623.4481 26.3% - 0s 0 2 64626.1572 0 42 87667.0000 64626.1572 26.3% - 0s H 27 27 66284.000000 64626.8068 2.50% 4.7 0s H 135 115 66280.000000 64628.2278 2.49% 4.0 0s * 304 210 72 66068.000000 64657.1691 2.14% 4.2 0s H 600 352 65863.000000 64744.7343 1.70% 5.1 0s * 856 359 84 65778.000000 64783.1700 1.51% 6.4 0s * 1133 366 82 65676.000000 64904.4180 1.17% 6.3 0s * 4588 1640 82 65664.000000 65248.6383 0.63% 6.3 1s H 5324 1832 65661.000000 65276.9871 0.58% 6.3 2s 14943 3305 65587.6198 29 31 65661.0000 65463.5587 0.30% 5.6 5s Cutting planes: Gomory: 16 Cover: 1 Flow cover: 69 Flow path: 35 Explored 26599 nodes (134359 simplex iterations) in 8.51 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.566099999998e+04, best bound 6.565444797437e+04, gap 0.0100%