Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:09 2012 Optimize a model with 247 rows, 275 columns and 890 nonzeros Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 247 rows, 244 columns, 859 nonzeros Variable types: 0 continuous, 244 integer (243 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 0.000000e+00, 164 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 94 36.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 95 26.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 94 13.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 2 0.00000 0 94 6.00000 0.00000 100% - 0s H 9 9 5.0000000 0.32432 93.5% 39.1 0s H 18 16 4.0000000 0.32432 91.9% 22.7 0s * 25 4 17 3.0000000 0.32432 89.2% 21.1 0s Cutting planes: Gomory: 1 Explored 42 nodes (1733 simplex iterations) in 0.14 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%