Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:12:20 2012 Optimize a model with 507 rows, 462 columns and 1727 nonzeros Presolve removed 0 rows and 15 columns Presolve time: 0.00s Presolved: 507 rows, 447 columns, 1712 nonzeros Variable types: 0 continuous, 447 integer (446 binary) Found heuristic solution: objective 98.0000000 Root relaxation: objective 0.000000e+00, 237 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 0 193 98.00000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s 0 0 0.46114 0 194 74.00000 0.46114 99.4% - 0s H 0 0 71.0000000 0.46114 99.4% - 0s 0 0 1.00000 0 196 71.00000 1.00000 98.6% - 0s H 0 0 69.0000000 1.00000 98.6% - 0s 0 0 1.00000 0 197 69.00000 1.00000 98.6% - 0s 0 0 1.00000 0 196 69.00000 1.00000 98.6% - 0s H 0 0 59.0000000 1.00000 98.3% - 0s H 0 0 44.0000000 1.00000 97.7% - 0s H 0 0 36.0000000 1.00000 97.2% - 0s 0 2 1.00000 0 195 36.00000 1.00000 97.2% - 0s H 27 27 28.0000000 1.00000 96.4% 35.2 0s * 77 59 50 21.0000000 1.00000 95.2% 21.9 0s H 243 115 18.0000000 4.40741 75.5% 23.8 0s H 944 208 16.0000000 8.58974 46.3% 27.2 1s Explored 1960 nodes (48725 simplex iterations) in 2.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%