Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:23 2012 Optimize a model with 77 rows, 51 columns and 241 nonzeros Presolve time: 0.00s Presolved: 77 rows, 51 columns, 241 nonzeros Variable types: 0 continuous, 51 integer (51 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 0.000000e+00, 20 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 13 19.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.70769 0 15 15.00000 0.70769 95.3% - 0s 0 0 0.78667 0 17 15.00000 0.78667 94.8% - 0s 0 0 0.83077 0 15 15.00000 0.83077 94.5% - 0s 0 0 0.83571 0 19 15.00000 0.83571 94.4% - 0s 0 2 0.98919 0 19 15.00000 0.98919 93.4% - 0s * 36 12 7 14.0000000 6.85714 51.0% 8.6 0s Cutting planes: Gomory: 1 Mod-K: 3 Explored 68 nodes (547 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%