Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:50:36 2012 Optimize a model with 587 rows, 110 columns and 1174 nonzeros Presolve removed 197 rows and 0 columns Presolve time: 0.00s Presolved: 390 rows, 110 columns, 966 nonzeros Variable types: 0 continuous, 110 integer (110 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 3.898165e+01, 249 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38.98165 0 107 29.00000 38.98165 34.4% - 0s 0 0 38.27143 0 107 29.00000 38.27143 32.0% - 0s 0 0 37.88028 0 107 29.00000 37.88028 30.6% - 0s 0 0 37.56261 0 105 29.00000 37.56261 29.5% - 0s H 0 0 30.0000000 37.56261 25.2% - 0s 0 0 37.36555 0 107 30.00000 37.36555 24.6% - 0s 0 0 37.17573 0 104 30.00000 37.17573 23.9% - 0s 0 0 37.03973 0 108 30.00000 37.03973 23.5% - 0s 0 0 36.93557 0 107 30.00000 36.93557 23.1% - 0s 0 0 36.86579 0 108 30.00000 36.86579 22.9% - 0s 0 0 36.84958 0 107 30.00000 36.84958 22.8% - 0s 0 0 36.82598 0 106 30.00000 36.82598 22.8% - 0s 0 0 36.73579 0 105 30.00000 36.73579 22.5% - 0s 0 0 36.70514 0 106 30.00000 36.70514 22.4% - 0s 0 0 36.68355 0 106 30.00000 36.68355 22.3% - 0s 0 0 36.66071 0 108 30.00000 36.66071 22.2% - 0s 0 0 36.65184 0 108 30.00000 36.65184 22.2% - 0s 0 0 36.65184 0 108 30.00000 36.65184 22.2% - 0s 0 2 36.64959 0 108 30.00000 36.64959 22.2% - 0s * 12 12 10 31.0000000 36.64658 18.2% 37.7 0s H 25 14 32.0000000 36.31732 13.5% 36.6 0s * 26 12 8 33.0000000 36.31732 10.1% 36.7 0s Cutting planes: Zero half: 63 Explored 140 nodes (5750 simplex iterations) in 0.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%