Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:21:04 2012 Optimize a model with 515 rows, 485 columns and 1770 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 515 rows, 460 columns, 1745 nonzeros Variable types: 0 continuous, 460 integer (459 binary) Found heuristic solution: objective 86.0000000 Root relaxation: objective 0.000000e+00, 291 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 0 194 86.00000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s 0 0 0.41237 0 195 74.00000 0.41237 99.4% - 0s H 0 0 69.0000000 0.41237 99.4% - 0s 0 0 1.03667 0 199 69.00000 1.03667 98.5% - 0s H 0 0 63.0000000 1.03667 98.4% - 0s H 0 0 59.0000000 1.03667 98.2% - 0s 0 0 1.03699 0 201 59.00000 1.03699 98.2% - 0s 0 0 1.03699 0 201 59.00000 1.03699 98.2% - 0s H 0 0 57.0000000 1.03699 98.2% - 0s H 0 0 55.0000000 1.03699 98.1% - 0s H 0 0 53.0000000 1.03699 98.0% - 0s 0 2 1.03802 0 201 53.00000 1.03802 98.0% - 0s H 27 27 38.0000000 1.06827 97.2% 47.1 0s * 36 28 21 19.0000000 1.06827 94.4% 41.3 0s * 82 40 22 18.0000000 1.07009 94.1% 35.3 0s * 878 112 11 17.0000000 11.00000 35.3% 34.7 1s Cutting planes: Gomory: 3 Mod-K: 1 Explored 1218 nodes (41606 simplex iterations) in 1.76 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%