Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:57:23 2012 Optimize a model with 595 rows, 530 columns and 2015 nonzeros Presolve removed 0 rows and 14 columns Presolve time: 0.00s Presolved: 595 rows, 516 columns, 2001 nonzeros Variable types: 0 continuous, 516 integer (515 binary) Found heuristic solution: objective 124.0000000 Root relaxation: objective 0.000000e+00, 280 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 0 214 124.00000 0.00000 100% - 0s H 0 0 101.0000000 0.00000 100% - 0s H 0 0 91.0000000 0.00000 100% - 0s H 0 0 87.0000000 0.00000 100% - 0s 0 0 0.43703 0 215 87.00000 0.43703 99.5% - 0s H 0 0 80.0000000 0.43703 99.5% - 0s 0 0 1.00000 0 217 80.00000 1.00000 98.8% - 0s H 0 0 77.0000000 1.00000 98.7% - 0s 0 0 1.13992 0 219 77.00000 1.13992 98.5% - 0s H 0 0 64.0000000 1.13992 98.2% - 0s H 0 0 58.0000000 1.13992 98.0% - 0s 0 0 1.14723 0 219 58.00000 1.14723 98.0% - 0s H 0 0 56.0000000 1.14723 98.0% - 0s H 0 0 53.0000000 1.14723 97.8% - 0s H 0 0 52.0000000 1.14723 97.8% - 0s 0 2 1.14726 0 219 52.00000 1.14726 97.8% - 0s H 27 27 51.0000000 1.45294 97.2% 42.4 0s * 42 36 23 24.0000000 1.45294 93.9% 37.9 0s * 208 88 19 19.0000000 5.73770 69.8% 46.2 0s Cutting planes: Gomory: 4 Zero half: 2 Explored 722 nodes (30613 simplex iterations) in 1.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%