Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:37:31 2012 Optimize a model with 491 rows, 464 columns and 1689 nonzeros Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 491 rows, 442 columns, 1667 nonzeros Variable types: 0 continuous, 442 integer (441 binary) Found heuristic solution: objective 85.0000000 Root relaxation: objective 0.000000e+00, 242 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 0 181 85.00000 0.00000 100% - 0s H 0 0 73.0000000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s 0 0 0.27740 0 183 68.00000 0.27740 100% - 0s H 0 0 65.0000000 0.27740 100% - 0s H 0 0 55.0000000 0.27740 99.5% - 0s 0 0 0.91960 0 186 55.00000 0.91960 98.3% - 0s H 0 0 40.0000000 0.91960 97.7% - 0s 0 0 0.91988 0 188 40.00000 0.91988 97.7% - 0s 0 0 0.91988 0 187 40.00000 0.91988 97.7% - 0s H 0 0 38.0000000 0.91988 97.6% - 0s 0 2 0.92416 0 187 38.00000 0.92416 97.6% - 0s H 27 27 31.0000000 1.00000 96.8% 61.7 0s H 32 32 30.0000000 1.00000 96.7% 56.7 0s H 54 54 27.0000000 1.00000 96.3% 40.5 0s H 81 71 23.0000000 1.00000 95.7% 30.7 0s * 139 79 40 19.0000000 1.00000 94.7% 29.7 0s * 298 185 19 18.0000000 1.00000 94.4% 31.3 0s * 990 272 37 17.0000000 10.10345 40.6% 30.3 2s Cutting planes: Gomory: 8 Explored 1401 nodes (40684 simplex iterations) in 2.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%