Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:42 2012 Optimize a model with 237 rows, 265 columns and 855 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 237 rows, 239 columns, 829 nonzeros Variable types: 0 continuous, 239 integer (238 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 159 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 40.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 95 18.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 94 8.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 2 0.00000 0 94 4.00000 0.00000 100% - 0s * 20 11 18 3.0000000 0.48780 83.7% 26.6 0s * 31 3 8 2.0000000 0.71875 64.1% 20.7 0s Cutting planes: Gomory: 1 Explored 35 nodes (1283 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%