Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:37:17 2012 Optimize a model with 305 rows, 321 columns and 1081 nonzeros Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 305 rows, 297 columns, 1057 nonzeros Variable types: 0 continuous, 297 integer (296 binary) Found heuristic solution: objective 52.0000000 Root relaxation: objective 0.000000e+00, 200 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 0 121 52.00000 0.00000 100% - 0s H 0 0 45.0000000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s 0 0 0.19225 0 123 36.00000 0.19225 99.5% - 0s H 0 0 27.0000000 0.19225 99.3% - 0s H 0 0 19.0000000 0.19225 99.0% - 0s 0 0 0.73158 0 130 19.00000 0.73158 96.1% - 0s H 0 0 15.0000000 0.73158 95.1% - 0s 0 0 0.73163 0 129 15.00000 0.73163 95.1% - 0s 0 0 0.73163 0 133 15.00000 0.73163 95.1% - 0s 0 0 0.73163 0 127 15.00000 0.73163 95.1% - 0s H 0 0 6.0000000 0.73163 87.8% - 0s 0 2 0.73178 0 127 6.00000 0.73178 87.8% - 0s * 111 36 28 5.0000000 1.00000 80.0% 21.7 0s * 327 23 10 4.0000000 1.21391 69.7% 22.4 0s * 337 3 8 3.0000000 1.63717 45.4% 22.6 0s Cutting planes: Gomory: 3 Zero half: 5 Mod-K: 2 Explored 341 nodes (8452 simplex iterations) in 0.31 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%