Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:02:46 2012 Optimize a model with 433 rows, 415 columns and 1495 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 433 rows, 392 columns, 1472 nonzeros Variable types: 0 continuous, 392 integer (391 binary) Found heuristic solution: objective 69.0000000 Root relaxation: objective 0.000000e+00, 260 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 0 165 69.00000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s 0 0 0.32617 0 167 48.00000 0.32617 99.3% - 0s H 0 0 46.0000000 0.32617 99.3% - 0s 0 0 0.79618 0 172 46.00000 0.79618 98.3% - 0s H 0 0 45.0000000 0.79618 98.2% - 0s 0 0 0.79618 0 174 45.00000 0.79618 98.2% - 0s 0 0 0.79618 0 172 45.00000 0.79618 98.2% - 0s H 0 0 43.0000000 0.79618 98.1% - 0s H 0 0 39.0000000 0.79618 98.0% - 0s H 0 0 37.0000000 0.79618 97.8% - 0s 0 2 0.79749 0 172 37.00000 0.79749 97.8% - 0s * 27 23 18 13.0000000 1.00000 92.3% 53.1 0s H 80 44 12.0000000 1.00000 91.7% 43.6 0s Cutting planes: Gomory: 4 Zero half: 7 Mod-K: 1 Explored 354 nodes (14855 simplex iterations) in 0.58 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%