Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:45:02 2012 Optimize a model with 305 rows, 233 columns and 993 nonzeros Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 305 rows, 231 columns, 991 nonzeros Variable types: 0 continuous, 231 integer (230 binary) Found heuristic solution: objective 63.0000000 Root relaxation: objective 0.000000e+00, 113 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 78 63.00000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s 0 0 0.48718 0 79 48.00000 0.48718 99.0% - 0s H 0 0 47.0000000 0.48718 99.0% - 0s 0 0 1.26597 0 81 47.00000 1.26597 97.3% - 0s H 0 0 46.0000000 1.26597 97.2% - 0s 0 0 1.35251 0 82 46.00000 1.35251 97.1% - 0s 0 0 1.35759 0 83 46.00000 1.35759 97.0% - 0s 0 2 1.36558 0 83 46.00000 1.36558 97.0% - 0s H 22 22 44.0000000 4.44238 89.9% 42.7 0s * 23 23 13 28.0000000 4.44238 84.1% 41.0 0s * 215 131 15 27.0000000 7.68623 71.5% 29.4 0s * 1250 171 25 26.0000000 14.88889 42.7% 25.1 1s Explored 2700 nodes (59843 simplex iterations) in 2.25 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%