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, 19 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 16.0000000 0.00000 100% - 0s 0 0 1.27381 0 20 16.00000 1.27381 92.0% - 0s 0 0 1.28205 0 15 16.00000 1.28205 92.0% - 0s 0 0 1.33333 0 17 16.00000 1.33333 91.7% - 0s 0 0 1.38462 0 15 16.00000 1.38462 91.3% - 0s 0 0 1.38462 0 15 16.00000 1.38462 91.3% - 0s 0 0 1.38462 0 15 16.00000 1.38462 91.3% - 0s 0 2 1.44444 0 15 16.00000 1.44444 91.0% - 0s * 14 12 7 15.0000000 3.77778 74.8% 13.2 0s Cutting planes: Gomory: 1 Mod-K: 5 Explored 123 nodes (1103 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%