Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:26:57 2012 Optimize a model with 939 rows, 139 columns and 1878 nonzeros Presolve removed 350 rows and 0 columns Presolve time: 0.01s Presolved: 589 rows, 139 columns, 1498 nonzeros Variable types: 0 continuous, 139 integer (139 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 4.625010e+01, 332 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46.25010 0 136 30.00000 46.25010 54.2% - 0s H 0 0 32.0000000 46.25010 44.5% - 0s 0 0 45.84123 0 137 32.00000 45.84123 43.3% - 0s 0 0 45.69439 0 136 32.00000 45.69439 42.8% - 0s 0 0 45.46889 0 139 32.00000 45.46889 42.1% - 0s 0 0 45.35798 0 138 32.00000 45.35798 41.7% - 0s 0 0 45.30171 0 139 32.00000 45.30171 41.6% - 0s 0 0 45.18748 0 139 32.00000 45.18748 41.2% - 0s 0 0 45.08048 0 139 32.00000 45.08048 40.9% - 0s 0 0 45.06378 0 139 32.00000 45.06378 40.8% - 0s 0 0 45.03183 0 139 32.00000 45.03183 40.7% - 0s 0 0 45.02682 0 139 32.00000 45.02682 40.7% - 0s 0 2 45.02653 0 139 32.00000 45.02653 40.7% - 0s H 32 22 33.0000000 44.76733 35.7% 49.8 0s H 220 86 35.0000000 43.32836 23.8% 37.8 0s 3440 1348 38.25000 26 76 35.00000 40.33333 15.2% 30.8 5s 10297 2987 37.83333 39 91 35.00000 38.58333 10.2% 24.8 10s *14368 2168 27 36.0000000 38.00000 5.56% 23.1 12s Explored 17532 nodes (380298 simplex iterations) in 14.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%