Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:56:59 2012 Optimize a model with 497 rows, 472 columns and 1712 nonzeros Presolve removed 0 rows and 21 columns Presolve time: 0.00s Presolved: 497 rows, 451 columns, 1691 nonzeros Variable types: 0 continuous, 451 integer (450 binary) Found heuristic solution: objective 88.0000000 Root relaxation: objective 0.000000e+00, 295 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 0 189 88.00000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 0 0.36942 0 192 64.00000 0.36942 99.4% - 0s H 0 0 55.0000000 0.36942 99.3% - 0s 0 0 0.73308 0 197 55.00000 0.73308 98.7% - 0s H 0 0 53.0000000 0.73308 98.6% - 0s H 0 0 51.0000000 0.73308 98.6% - 0s H 0 0 48.0000000 0.73308 98.5% - 0s H 0 0 45.0000000 0.73308 98.4% - 0s H 0 0 41.0000000 0.73308 98.2% - 0s 0 2 0.73784 0 197 41.00000 0.73784 98.2% - 0s H 27 26 15.0000000 1.87819 87.5% 31.4 0s * 52 29 12 14.0000000 1.94588 86.1% 34.3 0s * 152 43 14 13.0000000 5.98077 54.0% 33.3 0s Cutting planes: Gomory: 3 Explored 277 nodes (9668 simplex iterations) in 0.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%