Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:33:17 2012 Optimize a model with 543 rows, 501 columns and 1856 nonzeros Presolve removed 0 rows and 16 columns Presolve time: 0.00s Presolved: 543 rows, 485 columns, 1840 nonzeros Variable types: 0 continuous, 485 integer (484 binary) Found heuristic solution: objective 103.0000000 Root relaxation: objective 0.000000e+00, 301 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 206 103.00000 0.00000 100% - 0s H 0 0 92.0000000 0.00000 100% - 0s H 0 0 91.0000000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s 0 0 0.42337 0 208 75.00000 0.42337 99.4% - 0s H 0 0 29.0000000 0.42337 98.5% - 0s 0 0 0.66667 0 208 29.00000 0.66667 97.7% - 0s 0 0 0.66667 0 210 29.00000 0.66667 97.7% - 0s 0 0 0.66667 0 213 29.00000 0.66667 97.7% - 0s 0 0 0.66667 0 213 29.00000 0.66667 97.7% - 0s 0 2 0.66667 0 213 29.00000 0.66667 97.7% - 0s * 40 34 21 20.0000000 1.89319 90.5% 34.8 0s * 101 62 24 19.0000000 2.93750 84.5% 32.8 0s * 516 189 23 18.0000000 7.75000 56.9% 34.8 0s * 648 155 14 17.0000000 9.27027 45.5% 35.1 1s Cutting planes: Gomory: 2 Mod-K: 1 Explored 1092 nodes (38063 simplex iterations) in 1.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%