Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:27:20 2012 Optimize a model with 593 rows, 533 columns and 2013 nonzeros Presolve removed 0 rows and 19 columns Presolve time: 0.00s Presolved: 593 rows, 514 columns, 1994 nonzeros Variable types: 0 continuous, 514 integer (513 binary) Found heuristic solution: objective 105.0000000 Root relaxation: objective 0.000000e+00, 299 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 0 215 105.00000 0.00000 100% - 0s H 0 0 83.0000000 0.00000 100% - 0s H 0 0 82.0000000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s 0 0 0.44736 0 218 80.00000 0.44736 99.4% - 0s H 0 0 73.0000000 0.44736 99.4% - 0s 0 0 0.87587 0 219 73.00000 0.87587 98.8% - 0s H 0 0 69.0000000 0.87587 98.7% - 0s 0 0 0.87653 0 220 69.00000 0.87653 98.7% - 0s 0 0 0.87653 0 220 69.00000 0.87653 98.7% - 0s H 0 0 65.0000000 0.87653 98.7% - 0s H 0 0 63.0000000 0.87653 98.6% - 0s H 0 0 59.0000000 0.87653 98.5% - 0s 0 2 0.87830 0 220 59.00000 0.87830 98.5% - 0s H 27 27 56.0000000 3.46618 93.8% 45.1 0s * 40 35 22 27.0000000 3.46618 87.2% 39.1 0s * 123 73 13 24.0000000 6.07955 74.7% 40.5 0s * 318 121 10 23.0000000 11.74242 48.9% 37.5 0s * 742 112 14 22.0000000 15.57143 29.2% 34.8 1s Cutting planes: Gomory: 2 Mod-K: 1 Explored 1037 nodes (36244 simplex iterations) in 1.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%