Optimize a model with 150 rows, 11175 columns and 22350 nonzeros Presolve time: 0.03s Presolved: 150 rows, 11175 columns, 22350 nonzeros Variable types: 0 continuous, 11175 integer (11175 binary) Root relaxation: objective 6.281000e+03, 225 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 6281.00000 0 22 - 6281.00000 - - 0s 0 0 6291.00000 0 12 - 6291.00000 - - 0s 0 0 6298.94444 0 36 - 6298.94444 - - 0s 0 0 6305.50000 0 13 - 6305.50000 - - 0s 0 0 6306.50000 0 35 - 6306.50000 - - 0s 0 0 6310.00000 0 6 - 6310.00000 - - 0s 0 0 6311.00000 0 6 - 6311.00000 - - 0s 0 0 6313.00000 0 18 - 6313.00000 - - 0s 0 0 6314.10000 0 37 - 6314.10000 - - 0s 0 0 6315.16667 0 32 - 6315.16667 - - 0s 0 0 6315.91667 0 48 - 6315.91667 - - 0s 0 0 6318.66667 0 31 - 6318.66667 - - 0s 0 0 6319.07143 0 21 - 6319.07143 - - 0s 0 0 6320.06725 0 59 - 6320.06725 - - 0s 0 0 6320.80769 0 36 - 6320.80769 - - 0s 0 0 6321.68421 0 47 - 6321.68421 - - 0s 0 0 6322.33333 0 47 - 6322.33333 - - 0s 0 2 6323.50000 0 47 - 6323.50000 - - 0s * 75 73 48 6674.0000000 6460.50000 3.20% 8.9 2s 234 190 6574.50000 17 8 6674.00000 6474.50000 2.99% 7.3 5s * 244 145 20 6593.0000000 6474.50000 1.80% 7.3 5s * 323 150 20 6576.0000000 6486.50000 1.36% 7.0 6s * 327 140 17 6573.0000000 6486.50000 1.32% 7.0 6s * 456 163 32 6556.0000000 6494.75000 0.93% 6.6 8s 535 182 6530.37500 5 69 6556.00000 6501.50000 0.83% 6.4 10s H 621 212 6528.0000000 6517.38387 0.16% 6.0 11s Cutting planes: User: 23 Gomory: 8 Zero half: 21 Explored 626 nodes (4588 simplex iterations) in 12.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.528000000000e+03, best bound 6.528000000000e+03, gap 0.0% Gurobi 5.0.1 (linux64) logging started Sun Nov 25 02:45:15 2012