Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:26:57 2012 Optimize a model with 585 rows, 529 columns and 1989 nonzeros Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 585 rows, 507 columns, 1967 nonzeros Variable types: 0 continuous, 507 integer (506 binary) Found heuristic solution: objective 102.0000000 Root relaxation: objective 0.000000e+00, 270 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 0 205 102.00000 0.00000 100% - 0s H 0 0 98.0000000 0.00000 100% - 0s H 0 0 92.0000000 0.00000 100% - 0s H 0 0 87.0000000 0.00000 100% - 0s 0 0 0.30918 0 207 87.00000 0.30918 100% - 0s H 0 0 84.0000000 0.30918 100% - 0s 0 0 0.78531 0 209 84.00000 0.78531 99.1% - 0s H 0 0 81.0000000 0.78531 99.0% - 0s 0 0 0.78633 0 212 81.00000 0.78633 99.0% - 0s 0 0 0.78633 0 210 81.00000 0.78633 99.0% - 0s H 0 0 79.0000000 0.78633 99.0% - 0s H 0 0 44.0000000 0.78633 98.2% - 0s H 0 0 42.0000000 0.78633 98.1% - 0s 0 2 0.78836 0 210 42.00000 0.78836 98.1% - 0s H 27 27 20.0000000 1.00000 95.0% 44.5 0s 3049 112 18.99454 24 217 20.00000 16.84034 15.8% 27.7 5s Explored 3271 nodes (89212 simplex iterations) in 5.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%