Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:27 2012 Optimize a model with 89 rows, 73 columns and 293 nonzeros Presolve time: 0.00s Presolved: 89 rows, 73 columns, 293 nonzeros Variable types: 0 continuous, 73 integer (73 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 0.000000e+00, 44 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 29 21.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.51724 0 30 13.00000 0.51724 96.0% - 0s 0 0 1.10857 0 32 13.00000 1.10857 91.5% - 0s H 0 0 10.0000000 1.10857 88.9% - 0s 0 0 1.31041 0 33 10.00000 1.31041 86.9% - 0s 0 0 1.32632 0 34 10.00000 1.32632 86.7% - 0s 0 2 1.32948 0 34 10.00000 1.32948 86.7% - 0s * 20 13 11 9.0000000 2.52317 72.0% 13.6 0s * 30 14 6 8.0000000 2.67857 66.5% 12.5 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 86 nodes (1060 simplex iterations) in 0.03 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%