Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:22:56 2012 Optimize a model with 966 rows, 138 columns and 1932 nonzeros Presolve removed 378 rows and 0 columns Presolve time: 0.01s Presolved: 588 rows, 138 columns, 1535 nonzeros Variable types: 0 continuous, 138 integer (138 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 4.479406e+01, 327 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 44.79406 0 137 31.00000 44.79406 44.5% - 0s 0 0 44.48435 0 137 31.00000 44.48435 43.5% - 0s 0 0 44.37813 0 137 31.00000 44.37813 43.2% - 0s H 0 0 32.0000000 44.37813 38.7% - 0s 0 0 44.27610 0 138 32.00000 44.27610 38.4% - 0s 0 0 44.20852 0 134 32.00000 44.20852 38.2% - 0s 0 0 44.13837 0 138 32.00000 44.13837 37.9% - 0s 0 0 44.05195 0 138 32.00000 44.05195 37.7% - 0s 0 0 43.99452 0 138 32.00000 43.99452 37.5% - 0s 0 0 43.86344 0 138 32.00000 43.86344 37.1% - 0s H 0 0 33.0000000 43.86344 32.9% - 0s 0 0 43.83450 0 138 33.00000 43.83450 32.8% - 0s 0 0 43.70652 0 137 33.00000 43.70652 32.4% - 0s 0 0 43.61126 0 137 33.00000 43.61126 32.2% - 0s 0 0 43.57144 0 136 33.00000 43.57144 32.0% - 0s 0 0 43.53233 0 137 33.00000 43.53233 31.9% - 0s H 0 0 34.0000000 43.53233 28.0% - 0s 0 0 43.51537 0 137 34.00000 43.51537 28.0% - 0s 0 0 43.48620 0 136 34.00000 43.48620 27.9% - 0s 0 0 43.47879 0 137 34.00000 43.47879 27.9% - 0s 0 0 43.47879 0 136 34.00000 43.47879 27.9% - 0s 0 2 43.47835 0 136 34.00000 43.47835 27.9% - 0s * 647 229 35 35.0000000 40.29381 15.1% 38.7 1s 2617 787 36.20863 22 84 35.00000 39.41727 12.6% 36.6 5s 7411 1006 cutoff 31 35.00000 37.60000 7.43% 30.4 10s Explored 10275 nodes (285603 simplex iterations) in 12.16 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%