Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:39 2012 Optimize a model with 209 rows, 160 columns and 680 nonzeros Presolve time: 0.00s Presolved: 209 rows, 160 columns, 680 nonzeros Variable types: 0 continuous, 160 integer (160 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 0.000000e+00, 84 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 55 45.00000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s 0 0 0.53018 0 56 35.00000 0.53018 98.5% - 0s 0 0 1.00000 0 58 35.00000 1.00000 97.1% - 0s H 0 0 34.0000000 1.00000 97.1% - 0s H 0 0 33.0000000 1.00000 97.0% - 0s 0 0 1.00000 0 58 33.00000 1.00000 97.0% - 0s 0 0 1.00000 0 56 33.00000 1.00000 97.0% - 0s H 0 0 32.0000000 1.00000 96.9% - 0s 0 0 1.00000 0 57 32.00000 1.00000 96.9% - 0s 0 0 1.00000 0 55 32.00000 1.00000 96.9% - 0s H 0 0 27.0000000 1.00000 96.3% - 0s 0 2 1.00000 0 55 27.00000 1.00000 96.3% - 0s * 20 20 12 18.0000000 3.46777 80.7% 28.8 0s * 368 64 9 17.0000000 10.01124 41.1% 23.5 0s * 434 16 8 15.0000000 11.61290 22.6% 22.9 0s Cutting planes: Gomory: 3 Explored 455 nodes (10991 simplex iterations) in 0.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%