Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:28:35 2012 Optimize a model with 493 rows, 463 columns and 1693 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 493 rows, 440 columns, 1670 nonzeros Variable types: 0 continuous, 440 integer (439 binary) Found heuristic solution: objective 86.0000000 Root relaxation: objective 0.000000e+00, 255 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 86.00000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s H 0 0 63.0000000 0.00000 100% - 0s 0 0 0.27458 0 183 63.00000 0.27458 100% - 0s H 0 0 51.0000000 0.27458 99.5% - 0s H 0 0 36.0000000 0.27458 99.2% - 0s 0 0 0.82967 0 187 36.00000 0.82967 97.7% - 0s H 0 0 30.0000000 0.82967 97.2% - 0s 0 0 0.82983 0 189 30.00000 0.82983 97.2% - 0s 0 0 0.82983 0 189 30.00000 0.82983 97.2% - 0s H 0 0 27.0000000 0.82983 96.9% - 0s 0 2 0.83261 0 189 27.00000 0.83261 96.9% - 0s H 32 32 20.0000000 1.00000 95.0% 29.6 0s H 416 170 17.0000000 3.40667 80.0% 23.1 0s Explored 2100 nodes (49019 simplex iterations) in 2.35 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%