Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:21 2012 Optimize a model with 81 rows, 68 columns and 268 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 81 rows, 67 columns, 267 nonzeros Variable types: 0 continuous, 67 integer (66 binary) Found heuristic solution: objective 14.0000000 Root relaxation: objective 0.000000e+00, 38 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 14.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.61538 0 27 10.00000 0.61538 93.8% - 0s 0 0 1.00000 0 28 10.00000 1.00000 90.0% - 0s 0 0 1.16894 0 31 10.00000 1.16894 88.3% - 0s 0 0 1.26763 0 29 10.00000 1.26763 87.3% - 0s 0 0 1.32184 0 30 10.00000 1.32184 86.8% - 0s 0 0 1.32184 0 31 10.00000 1.32184 86.8% - 0s H 0 0 8.0000000 1.32184 83.5% - 0s 0 2 1.32184 0 31 8.00000 1.32184 83.5% - 0s * 16 4 7 7.0000000 2.72549 61.1% 13.9 0s Cutting planes: Gomory: 4 Mod-K: 2 Explored 27 nodes (501 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%