Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:35 2012 Optimize a model with 524 rows, 104 columns and 1048 nonzeros Presolve removed 179 rows and 0 columns Presolve time: 0.00s Presolved: 345 rows, 104 columns, 842 nonzeros Variable types: 0 continuous, 104 integer (104 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 3.875000e+01, 212 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38.75000 0 102 30.00000 38.75000 29.2% - 0s 0 0 38.00000 0 101 30.00000 38.00000 26.7% - 0s 0 0 37.74000 0 103 30.00000 37.74000 25.8% - 0s 0 0 37.27500 0 102 30.00000 37.27500 24.3% - 0s 0 0 37.09621 0 102 30.00000 37.09621 23.7% - 0s H 0 0 31.0000000 37.09621 19.7% - 0s 0 0 36.99038 0 100 31.00000 36.99038 19.3% - 0s H 0 0 32.0000000 36.99038 15.6% - 0s 0 0 36.86998 0 102 32.00000 36.86998 15.2% - 0s 0 0 36.84884 0 101 32.00000 36.84884 15.2% - 0s 0 0 36.79436 0 101 32.00000 36.79436 15.0% - 0s 0 0 36.72037 0 101 32.00000 36.72037 14.8% - 0s 0 0 36.68142 0 103 32.00000 36.68142 14.6% - 0s 0 0 36.59463 0 102 32.00000 36.59463 14.4% - 0s 0 0 36.56730 0 103 32.00000 36.56730 14.3% - 0s 0 0 36.52123 0 102 32.00000 36.52123 14.1% - 0s 0 0 36.47846 0 101 32.00000 36.47846 14.0% - 0s 0 0 36.47176 0 101 32.00000 36.47176 14.0% - 0s 0 0 36.47176 0 101 32.00000 36.47176 14.0% - 0s 0 2 36.47021 0 101 32.00000 36.47021 14.0% - 0s Cutting planes: Clique: 2 Zero half: 58 Explored 262 nodes (8017 simplex iterations) in 0.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%