Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:45:17 2012 Optimize a model with 221 rows, 156 columns and 706 nonzeros Presolve time: 0.00s Presolved: 221 rows, 156 columns, 706 nonzeros Variable types: 0 continuous, 156 integer (156 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 0.000000e+00, 69 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 46 47.00000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.85000 0 48 34.00000 0.85000 97.5% - 0s H 0 0 32.0000000 0.85000 97.3% - 0s 0 0 1.00000 0 48 32.00000 1.00000 96.9% - 0s 0 0 1.02500 0 48 32.00000 1.02500 96.8% - 0s 0 0 1.02500 0 48 32.00000 1.02500 96.8% - 0s 0 0 1.02500 0 48 32.00000 1.02500 96.8% - 0s 0 2 1.05882 0 48 32.00000 1.05882 96.7% - 0s * 27 25 15 30.0000000 3.83333 87.2% 30.4 0s * 118 76 15 29.0000000 7.00000 75.9% 21.7 0s * 172 102 16 28.0000000 9.92683 64.5% 20.9 0s * 190 99 11 27.0000000 10.67500 60.5% 20.3 0s * 207 84 12 25.0000000 10.67500 57.3% 20.0 0s * 411 88 11 24.0000000 14.27586 40.5% 19.2 0s Cutting planes: Gomory: 1 Zero half: 4 Explored 814 nodes (14288 simplex iterations) in 0.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%