Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:06:11 2012 Optimize a model with 409 rows, 407 columns and 1427 nonzeros Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 409 rows, 387 columns, 1407 nonzeros Variable types: 0 continuous, 387 integer (386 binary) Found heuristic solution: objective 82.0000000 Root relaxation: objective 0.000000e+00, 234 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 0 168 82.00000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s 0 0 0.27016 0 170 43.00000 0.27016 99.4% - 0s H 0 0 38.0000000 0.27016 99.3% - 0s 0 0 0.94035 0 171 38.00000 0.94035 97.5% - 0s H 0 0 33.0000000 0.94035 97.2% - 0s H 0 0 29.0000000 0.94035 96.8% - 0s 0 0 0.94092 0 175 29.00000 0.94092 96.8% - 0s 0 0 0.94092 0 174 29.00000 0.94092 96.8% - 0s H 0 0 26.0000000 0.94092 96.4% - 0s H 0 0 20.0000000 0.94092 95.3% - 0s 0 2 0.94346 0 173 20.00000 0.94346 95.3% - 0s H 27 23 8.0000000 1.00000 87.5% 31.5 0s Explored 645 nodes (12774 simplex iterations) in 0.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%