Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:25 2012 Optimize a model with 125 rows, 112 columns and 422 nonzeros Presolve removed 0 rows and 5 columns Presolve time: 0.00s Presolved: 125 rows, 107 columns, 417 nonzeros Variable types: 0 continuous, 107 integer (106 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 0.000000e+00, 67 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 42 22.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.39780 0 44 15.00000 0.39780 97.3% - 0s H 0 0 14.0000000 0.39780 97.2% - 0s H 0 0 13.0000000 0.39780 96.9% - 0s 0 0 1.07138 0 48 13.00000 1.07138 91.8% - 0s 0 0 1.07408 0 50 13.00000 1.07408 91.7% - 0s 0 0 1.07408 0 50 13.00000 1.07408 91.7% - 0s H 0 0 12.0000000 1.07408 91.0% - 0s 0 2 1.10626 0 48 12.00000 1.10626 90.8% - 0s * 9 9 8 9.0000000 1.96002 78.2% 26.3 0s * 10 7 8 8.0000000 1.96002 75.5% 24.2 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 46 nodes (1027 simplex iterations) in 0.06 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%