Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:17:39 2012 Optimize a model with 455 rows, 439 columns and 1574 nonzeros Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 455 rows, 415 columns, 1550 nonzeros Variable types: 0 continuous, 415 integer (414 binary) Found heuristic solution: objective 65.0000000 Root relaxation: objective 0.000000e+00, 250 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 0 161 65.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s 0 0 0.20287 0 162 62.00000 0.20287 100% - 0s H 0 0 60.0000000 0.20287 100% - 0s 0 0 1.00000 0 163 60.00000 1.00000 98.3% - 0s H 0 0 56.0000000 1.00000 98.2% - 0s 0 0 1.00000 0 167 56.00000 1.00000 98.2% - 0s 0 0 1.00000 0 164 56.00000 1.00000 98.2% - 0s H 0 0 54.0000000 1.00000 98.1% - 0s H 0 0 45.0000000 1.00000 97.8% - 0s H 0 0 34.0000000 1.00000 97.1% - 0s 0 2 1.00000 0 164 34.00000 1.00000 97.1% - 0s H 54 54 33.0000000 1.00000 97.0% 29.3 0s H 80 31 14.0000000 1.00000 92.9% 34.5 0s H 109 26 13.0000000 1.00000 92.3% 36.0 0s H 136 42 12.0000000 3.03966 74.7% 36.7 0s Cutting planes: Gomory: 4 Mod-K: 1 Explored 326 nodes (12104 simplex iterations) in 0.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%