Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:43:59 2012 Optimize a model with 1006 rows, 144 columns and 2012 nonzeros Presolve removed 385 rows and 0 columns Presolve time: 0.01s Presolved: 621 rows, 144 columns, 1611 nonzeros Variable types: 0 continuous, 144 integer (144 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 4.706445e+01, 418 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.06445 0 143 30.00000 47.06445 56.9% - 0s H 0 0 31.0000000 47.06445 51.8% - 0s 0 0 46.66031 0 144 31.00000 46.66031 50.5% - 0s 0 0 46.40717 0 144 31.00000 46.40717 49.7% - 0s H 0 0 32.0000000 46.40717 45.0% - 0s 0 0 46.22396 0 144 32.00000 46.22396 44.4% - 0s 0 0 46.15613 0 144 32.00000 46.15613 44.2% - 0s 0 0 46.09520 0 144 32.00000 46.09520 44.0% - 0s 0 0 46.01613 0 144 32.00000 46.01613 43.8% - 0s 0 0 45.94715 0 144 32.00000 45.94715 43.6% - 0s 0 0 45.87879 0 144 32.00000 45.87879 43.4% - 0s 0 0 45.83899 0 144 32.00000 45.83899 43.2% - 0s H 0 0 33.0000000 45.83899 38.9% - 0s 0 0 45.77867 0 144 33.00000 45.77867 38.7% - 0s 0 0 45.77142 0 144 33.00000 45.77142 38.7% - 0s 0 2 45.76748 0 144 33.00000 45.76748 38.7% - 0s H 163 74 35.0000000 44.17162 26.2% 52.0 0s * 187 67 25 36.0000000 44.17162 22.7% 47.2 0s H 1403 370 37.0000000 42.37250 14.5% 46.6 3s 2238 617 39.88355 26 101 37.00000 41.32993 11.7% 43.0 5s 5717 372 38.49004 25 98 37.00000 39.00840 5.43% 36.3 10s Explored 6326 nodes (220656 simplex iterations) in 10.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%