Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:09:29 2012 Optimize a model with 305 rows, 210 columns and 970 nonzeros Presolve time: 0.00s Presolved: 305 rows, 210 columns, 970 nonzeros Variable types: 0 continuous, 210 integer (210 binary) Found heuristic solution: objective 74.0000000 Root relaxation: objective 0.000000e+00, 92 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 58 74.00000 0.00000 100% - 0s H 0 0 63.0000000 0.00000 100% - 0s 0 0 0.50000 0 59 63.00000 0.50000 99.2% - 0s H 0 0 59.0000000 0.50000 99.2% - 0s 0 0 0.65600 0 61 59.00000 0.65600 98.9% - 0s 0 0 0.67059 0 61 59.00000 0.67059 98.9% - 0s 0 0 0.68518 0 68 59.00000 0.68518 98.8% - 0s 0 0 0.71429 0 61 59.00000 0.71429 98.8% - 0s 0 0 0.72429 0 68 59.00000 0.72429 98.8% - 0s 0 0 0.73252 0 74 59.00000 0.73252 98.8% - 0s H 0 0 48.0000000 0.73252 98.5% - 0s 0 2 0.77612 0 74 48.00000 0.77612 98.4% - 0s * 27 27 17 41.0000000 5.96956 85.4% 33.9 0s * 31 24 19 40.0000000 5.96956 85.1% 30.2 0s * 147 90 18 37.0000000 12.77778 65.5% 23.3 0s * 171 90 11 36.0000000 12.80000 64.4% 22.9 0s * 624 126 11 35.0000000 23.50000 32.9% 19.2 0s Cutting planes: Gomory: 1 Zero half: 5 Mod-K: 1 Explored 1474 nodes (24934 simplex iterations) in 0.92 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%