Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:20:35 2012 Optimize a model with 189 rows, 218 columns and 688 nonzeros Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 189 rows, 191 columns, 661 nonzeros Variable types: 0 continuous, 191 integer (190 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 0.000000e+00, 136 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 80 30.00000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00282 0 82 20.00000 0.00282 100% - 0s H 0 0 17.0000000 0.00282 100% - 0s H 0 0 13.0000000 0.00282 100% - 0s 0 0 0.69757 0 89 13.00000 0.69757 94.6% - 0s H 0 0 8.0000000 0.69757 91.3% - 0s H 0 0 7.0000000 0.69757 90.0% - 0s 0 0 0.69757 0 89 7.00000 0.69757 90.0% - 0s H 0 0 5.0000000 0.69757 86.0% - 0s H 0 0 3.0000000 0.69757 76.7% - 0s 0 2 0.75000 0 89 3.00000 0.75000 75.0% - 0s * 13 6 12 2.0000000 1.00000 50.0% 29.1 0s Cutting planes: Gomory: 4 Explored 20 nodes (1043 simplex iterations) in 0.11 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%