Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:35:25 2012 Optimize a model with 589 rows, 149 columns and 1178 nonzeros Presolve removed 112 rows and 0 columns Presolve time: 0.00s Presolved: 477 rows, 149 columns, 1026 nonzeros Variable types: 0 continuous, 149 integer (149 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 6.200000e+01, 217 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 62.00000 0 120 46.00000 62.00000 34.8% - 0s 0 0 60.10345 0 145 46.00000 60.10345 30.7% - 0s 0 0 58.95082 0 146 46.00000 58.95082 28.2% - 0s 0 0 58.14181 0 147 46.00000 58.14181 26.4% - 0s 0 0 57.58637 0 145 46.00000 57.58637 25.2% - 0s H 0 0 47.0000000 57.58637 22.5% - 0s 0 0 57.24274 0 147 47.00000 57.24274 21.8% - 0s 0 0 57.03762 0 147 47.00000 57.03762 21.4% - 0s 0 0 56.91387 0 147 47.00000 56.91387 21.1% - 0s 0 0 56.63515 0 147 47.00000 56.63515 20.5% - 0s 0 0 56.56705 0 147 47.00000 56.56705 20.4% - 0s 0 0 56.49122 0 144 47.00000 56.49122 20.2% - 0s 0 0 56.45146 0 147 47.00000 56.45146 20.1% - 0s 0 0 56.45146 0 145 47.00000 56.45146 20.1% - 0s 0 2 56.45124 0 145 47.00000 56.45124 20.1% - 0s H 252 105 48.0000000 54.89474 14.4% 34.5 0s H 253 91 49.0000000 54.89474 12.0% 34.3 0s 612 201 50.00000 14 147 49.00000 54.00000 10.2% 32.6 5s 1779 464 50.50000 33 96 49.00000 52.83333 7.82% 36.2 10s * 2212 354 33 50.0000000 52.53896 5.08% 34.9 10s Cutting planes: Gomory: 3 Clique: 1 Zero half: 181 Explored 3077 nodes (99525 simplex iterations) in 11.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0%