Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:35:14 2012 Optimize a model with 585 rows, 149 columns and 1170 nonzeros Presolve removed 122 rows and 0 columns Presolve time: 0.00s Presolved: 463 rows, 149 columns, 1005 nonzeros Variable types: 0 continuous, 149 integer (149 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 6.000000e+01, 269 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60.00000 0 114 42.00000 60.00000 42.9% - 0s H 0 0 43.0000000 60.00000 39.5% - 0s 0 0 59.50000 0 143 43.00000 59.50000 38.4% - 0s H 0 0 47.0000000 59.50000 26.6% - 0s 0 0 59.09655 0 147 47.00000 59.09655 25.7% - 0s 0 0 58.36567 0 148 47.00000 58.36567 24.2% - 0s 0 0 58.07900 0 146 47.00000 58.07900 23.6% - 0s H 0 0 49.0000000 58.07900 18.5% - 0s 0 0 57.81081 0 145 49.00000 57.81081 18.0% - 0s 0 0 57.49599 0 147 49.00000 57.49599 17.3% - 0s 0 0 57.44172 0 147 49.00000 57.44172 17.2% - 0s 0 0 57.34252 0 148 49.00000 57.34252 17.0% - 0s 0 0 57.27614 0 149 49.00000 57.27614 16.9% - 0s 0 0 57.24155 0 147 49.00000 57.24155 16.8% - 0s 0 0 57.20682 0 147 49.00000 57.20682 16.7% - 0s H 0 0 50.0000000 57.20682 14.4% - 0s 0 0 57.15973 0 148 50.00000 57.15973 14.3% - 0s 0 0 57.12125 0 149 50.00000 57.12125 14.2% - 0s 0 0 57.10255 0 149 50.00000 57.10255 14.2% - 0s 0 0 57.10255 0 149 50.00000 57.10255 14.2% - 0s 0 2 57.10067 0 148 50.00000 57.10067 14.2% - 0s * 50 22 11 51.0000000 56.38025 10.5% 45.8 0s Cutting planes: Zero half: 135 Explored 980 nodes (31414 simplex iterations) in 1.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.100000000000e+01, best bound 5.100000000000e+01, gap 0.0%