Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:40:30 2012 Optimize a model with 307 rows, 325 columns and 1090 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 307 rows, 299 columns, 1064 nonzeros Variable types: 0 continuous, 299 integer (298 binary) Found heuristic solution: objective 51.0000000 Root relaxation: objective 0.000000e+00, 187 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 0 125 51.00000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s 0 0 0.21629 0 128 31.00000 0.21629 99.3% - 0s H 0 0 25.0000000 0.21629 99.1% - 0s H 0 0 17.0000000 0.21629 98.7% - 0s 0 0 0.75554 0 133 17.00000 0.75554 95.6% - 0s H 0 0 11.0000000 0.75554 93.1% - 0s 0 0 0.75554 0 135 11.00000 0.75554 93.1% - 0s 0 0 0.75554 0 130 11.00000 0.75554 93.1% - 0s H 0 0 9.0000000 0.75554 91.6% - 0s H 0 0 8.0000000 0.75554 90.6% - 0s 0 2 0.75557 0 130 8.00000 0.75557 90.6% - 0s * 11 11 7 4.0000000 1.00000 75.0% 44.9 0s * 19 6 14 3.0000000 1.00000 66.7% 31.7 0s Cutting planes: Gomory: 3 Zero half: 2 Explored 40 nodes (1980 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%