Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:54 2012 Optimize a model with 149 rows, 131 columns and 501 nonzeros Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 149 rows, 129 columns, 499 nonzeros Variable types: 0 continuous, 129 integer (128 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 96 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 54 32.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.58753 0 57 23.00000 0.58753 97.4% - 0s H 0 0 21.0000000 0.58753 97.2% - 0s 0 0 1.23216 0 59 21.00000 1.23216 94.1% - 0s H 0 0 19.0000000 1.23216 93.5% - 0s H 0 0 18.0000000 1.23216 93.2% - 0s 0 0 1.24044 0 60 18.00000 1.24044 93.1% - 0s H 0 0 17.0000000 1.24044 92.7% - 0s H 0 0 15.0000000 1.24044 91.7% - 0s 0 2 1.24347 0 60 15.00000 1.24347 91.7% - 0s * 18 17 13 13.0000000 2.91796 77.6% 26.7 0s * 28 15 7 10.0000000 2.99500 70.0% 25.2 0s * 55 18 14 9.0000000 4.58824 49.0% 18.5 0s Cutting planes: Gomory: 3 Mod-K: 2 Explored 93 nodes (1967 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%