Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:25 2012 Optimize a model with 227 rows, 259 columns and 824 nonzeros Presolve removed 0 rows and 32 columns Presolve time: 0.00s Presolved: 227 rows, 227 columns, 792 nonzeros Variable types: 0 continuous, 227 integer (226 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 0.000000e+00, 175 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 92 34.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 93 23.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 93 15.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 2 0.00000 0 93 4.00000 0.00000 100% - 0s * 8 5 6 3.0000000 0.55882 81.4% 54.5 0s Cutting planes: Gomory: 1 Explored 24 nodes (1324 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%