Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:36:29 2012 Optimize a model with 335 rows, 334 columns and 1169 nonzeros Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 335 rows, 313 columns, 1148 nonzeros Variable types: 0 continuous, 313 integer (312 binary) Found heuristic solution: objective 56.0000000 Root relaxation: objective 0.000000e+00, 198 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 0 132 56.00000 0.00000 100% - 0s H 0 0 53.0000000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s 0 0 0.20730 0 134 39.00000 0.20730 99.5% - 0s H 0 0 35.0000000 0.20730 99.4% - 0s H 0 0 34.0000000 0.20730 99.4% - 0s 0 0 0.86822 0 137 34.00000 0.86822 97.4% - 0s H 0 0 22.0000000 0.86822 96.1% - 0s H 0 0 19.0000000 0.86822 95.4% - 0s 0 0 0.87079 0 139 19.00000 0.87079 95.4% - 0s 0 0 0.87079 0 139 19.00000 0.87079 95.4% - 0s H 0 0 17.0000000 0.87079 94.9% - 0s 0 2 0.88070 0 139 17.00000 0.88070 94.8% - 0s H 27 27 16.0000000 1.00000 93.8% 26.3 0s H 36 36 9.0000000 1.00000 88.9% 32.2 0s H 388 104 8.0000000 1.13524 85.8% 23.1 0s Cutting planes: Gomory: 4 Zero half: 1 Mod-K: 2 Explored 846 nodes (21101 simplex iterations) in 0.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%