Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:38:19 2012 Optimize a model with 299 rows, 228 columns and 973 nonzeros Presolve removed 0 rows and 3 columns Presolve time: 0.00s Presolved: 299 rows, 225 columns, 970 nonzeros Variable types: 0 continuous, 225 integer (224 binary) Found heuristic solution: objective 68.0000000 Root relaxation: objective 0.000000e+00, 114 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 75 68.00000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s 0 0 0.54194 0 76 50.00000 0.54194 98.9% - 0s 0 0 1.00000 0 78 50.00000 1.00000 98.0% - 0s H 0 0 49.0000000 1.00000 98.0% - 0s 0 0 1.00000 0 75 49.00000 1.00000 98.0% - 0s H 0 0 46.0000000 1.00000 97.8% - 0s H 0 0 44.0000000 1.00000 97.7% - 0s H 0 0 43.0000000 1.00000 97.7% - 0s 0 2 1.00000 0 75 43.00000 1.00000 97.7% - 0s * 32 32 18 32.0000000 2.89189 91.0% 29.3 0s * 38 28 24 31.0000000 2.89189 90.7% 25.6 0s * 68 50 20 28.0000000 3.68421 86.8% 26.4 0s * 214 141 16 27.0000000 7.96721 70.5% 29.5 0s * 1399 117 26 26.0000000 17.66667 32.1% 25.5 1s Cutting planes: Gomory: 1 Explored 1847 nodes (47119 simplex iterations) in 1.56 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%