Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:25 2012 Optimize a model with 129 rows, 114 columns and 434 nonzeros Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 129 rows, 112 columns, 432 nonzeros Variable types: 0 continuous, 112 integer (111 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 63 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 47 29.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.51489 0 48 21.00000 0.51489 97.5% - 0s H 0 0 19.0000000 0.51489 97.3% - 0s 0 0 1.00000 0 48 19.00000 1.00000 94.7% - 0s H 0 0 12.0000000 1.00000 91.7% - 0s 0 0 1.00000 0 48 12.00000 1.00000 91.7% - 0s 0 2 1.00000 0 48 12.00000 1.00000 91.7% - 0s * 14 8 11 6.0000000 2.48043 58.7% 32.9 0s Cutting planes: Gomory: 3 Mod-K: 1 Explored 29 nodes (1109 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%