Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:26:23 2012 Optimize a model with 311 rows, 229 columns and 1004 nonzeros Presolve time: 0.00s Presolved: 311 rows, 229 columns, 1004 nonzeros Variable types: 0 continuous, 229 integer (229 binary) Found heuristic solution: objective 71.0000000 Root relaxation: objective 0.000000e+00, 108 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 74 71.00000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s H 0 0 65.0000000 0.00000 100% - 0s H 0 0 63.0000000 0.00000 100% - 0s 0 0 0.62857 0 76 63.00000 0.62857 99.0% - 0s H 0 0 62.0000000 0.62857 99.0% - 0s 0 0 0.65476 0 77 62.00000 0.65476 98.9% - 0s H 0 0 60.0000000 0.65476 98.9% - 0s 0 0 0.74359 0 77 60.00000 0.74359 98.8% - 0s H 0 0 57.0000000 0.74359 98.7% - 0s 0 0 0.76190 0 77 57.00000 0.76190 98.7% - 0s 0 0 0.81942 0 82 57.00000 0.81942 98.6% - 0s H 0 0 53.0000000 0.81942 98.5% - 0s 0 0 0.86755 0 82 53.00000 0.86755 98.4% - 0s 0 0 0.87143 0 76 53.00000 0.87143 98.4% - 0s 0 0 0.89280 0 82 53.00000 0.89280 98.3% - 0s 0 0 0.90817 0 84 53.00000 0.90817 98.3% - 0s H 0 0 51.0000000 0.90817 98.2% - 0s 0 2 0.92737 0 84 51.00000 0.92737 98.2% - 0s H 27 27 38.0000000 4.72605 87.6% 32.7 0s * 40 35 26 35.0000000 4.72605 86.5% 25.5 0s * 65 41 19 27.0000000 4.80519 82.2% 24.1 0s * 373 116 11 26.0000000 13.50000 48.1% 20.8 0s Cutting planes: Gomory: 1 Zero half: 6 Mod-K: 2 Explored 1392 nodes (26261 simplex iterations) in 0.85 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%