Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:26:27 2012 Optimize a model with 259 rows, 203 columns and 848 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 259 rows, 202 columns, 847 nonzeros Variable types: 0 continuous, 202 integer (201 binary) Found heuristic solution: objective 61.0000000 Root relaxation: objective 0.000000e+00, 118 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 72 61.00000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s 0 0 0.51557 0 73 48.00000 0.51557 98.9% - 0s H 0 0 47.0000000 0.51557 98.9% - 0s 0 0 1.06824 0 75 47.00000 1.06824 97.7% - 0s H 0 0 44.0000000 1.06824 97.6% - 0s 0 0 1.28192 0 75 44.00000 1.28192 97.1% - 0s H 0 0 35.0000000 1.28192 96.3% - 0s H 0 0 34.0000000 1.28192 96.2% - 0s H 0 0 31.0000000 1.28192 95.9% - 0s 0 0 1.28812 0 75 31.00000 1.28812 95.8% - 0s H 0 0 27.0000000 1.28812 95.2% - 0s H 0 0 26.0000000 1.28812 95.0% - 0s 0 2 1.29014 0 75 26.00000 1.29014 95.0% - 0s * 114 75 24 25.0000000 4.53657 81.9% 25.1 0s * 153 76 22 20.0000000 4.55300 77.2% 24.9 0s * 252 92 14 19.0000000 7.40909 61.0% 25.2 0s Cutting planes: Gomory: 4 Zero half: 1 Explored 1180 nodes (23019 simplex iterations) in 0.70 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%