Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:57:50 2012 Optimize a model with 571 rows, 518 columns and 1943 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 571 rows, 495 columns, 1920 nonzeros Variable types: 0 continuous, 495 integer (494 binary) Found heuristic solution: objective 107.0000000 Root relaxation: objective 0.000000e+00, 286 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 0 205 107.00000 0.00000 100% - 0s H 0 0 89.0000000 0.00000 100% - 0s H 0 0 88.0000000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s 0 0 0.44084 0 207 84.00000 0.44084 99.5% - 0s H 0 0 66.0000000 0.44084 99.3% - 0s 0 0 0.85668 0 209 66.00000 0.85668 98.7% - 0s H 0 0 39.0000000 0.85668 97.8% - 0s 0 0 0.85668 0 209 39.00000 0.85668 97.8% - 0s 0 2 0.85966 0 209 39.00000 0.85966 97.8% - 0s H 54 54 37.0000000 1.00000 97.3% 35.8 0s H 81 61 26.0000000 1.00000 96.2% 29.2 0s * 135 72 33 21.0000000 1.00000 95.2% 30.7 0s H 218 119 20.0000000 1.08321 94.6% 32.2 0s H 245 132 19.0000000 2.05952 89.2% 33.9 0s 3247 66 17.63158 24 222 19.00000 16.76923 11.7% 27.1 5s Explored 3343 nodes (90376 simplex iterations) in 5.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%