Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:42 2012 Optimize a model with 201 rows, 67 columns and 402 nonzeros Presolve removed 36 rows and 0 columns Presolve time: 0.00s Presolved: 165 rows, 67 columns, 353 nonzeros Variable types: 0 continuous, 67 integer (67 binary) Found heuristic solution: objective 22.0000000 Root relaxation: objective 2.900000e+01, 86 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 29.00000 0 48 22.00000 29.00000 31.8% - 0s H 0 0 23.0000000 29.00000 26.1% - 0s H 0 0 24.0000000 29.00000 20.8% - 0s 0 0 28.00000 0 50 24.00000 28.00000 16.7% - 0s 0 0 27.50000 0 65 24.00000 27.50000 14.6% - 0s H 0 0 25.0000000 27.50000 10.0% - 0s 0 0 27.33333 0 62 25.00000 27.33333 9.33% - 0s 0 0 27.27273 0 65 25.00000 27.27273 9.09% - 0s 0 0 27.08750 0 65 25.00000 27.08750 8.35% - 0s 0 0 27.07273 0 64 25.00000 27.07273 8.29% - 0s 0 0 27.05114 0 65 25.00000 27.05114 8.20% - 0s 0 0 27.05114 0 65 25.00000 27.05114 8.20% - 0s 0 2 27.04082 0 65 25.00000 27.04082 8.16% - 0s * 14 3 5 26.0000000 26.75862 2.92% 9.3 0s Cutting planes: Gomory: 1 Zero half: 29 Explored 15 nodes (425 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%