Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:15 2012 Optimize a model with 77 rows, 65 columns and 255 nonzeros Presolve time: 0.00s Presolved: 77 rows, 65 columns, 255 nonzeros Variable types: 0 continuous, 65 integer (65 binary) Found heuristic solution: objective 20.0000000 Root relaxation: objective 0.000000e+00, 41 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 26 20.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.54545 0 27 11.00000 0.54545 95.0% - 0s H 0 0 9.0000000 0.54545 93.9% - 0s 0 0 1.20781 0 32 9.00000 1.20781 86.6% - 0s H 0 0 5.0000000 1.20781 75.8% - 0s 0 0 1.21318 0 33 5.00000 1.21318 75.7% - 0s 0 2 1.29933 0 33 5.00000 1.29933 74.0% - 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 6 nodes (250 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%