Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:53 2012 Optimize a model with 279 rows, 305 columns and 1000 nonzeros Presolve removed 0 rows and 32 columns Presolve time: 0.00s Presolved: 279 rows, 273 columns, 968 nonzeros Variable types: 0 continuous, 273 integer (272 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 0.000000e+00, 191 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 0 106 42.00000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 0 0.02511 0 108 29.00000 0.02511 100% - 0s H 0 0 21.0000000 0.02511 100% - 0s H 0 0 18.0000000 0.02511 100% - 0s 0 0 0.75939 0 116 18.00000 0.75939 95.8% - 0s H 0 0 15.0000000 0.75939 94.9% - 0s H 0 0 14.0000000 0.75939 94.6% - 0s 0 0 0.75939 0 119 14.00000 0.75939 94.6% - 0s 0 0 0.75939 0 113 14.00000 0.75939 94.6% - 0s H 0 0 12.0000000 0.75939 93.7% - 0s H 0 0 11.0000000 0.75939 93.1% - 0s H 0 0 8.0000000 0.75939 90.5% - 0s 0 2 0.82211 0 113 8.00000 0.82211 89.7% - 0s H 27 27 6.0000000 1.00000 83.3% 23.4 0s H 28 10 3.0000000 1.00000 66.7% 23.0 0s Cutting planes: Gomory: 4 Zero half: 1 Mod-K: 1 Explored 63 nodes (3532 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%