Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:56:01 2012 Optimize a model with 744 rows, 121 columns and 1488 nonzeros Presolve removed 277 rows and 0 columns Presolve time: 0.00s Presolved: 467 rows, 121 columns, 1180 nonzeros Variable types: 0 continuous, 121 integer (121 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 4.147701e+01, 318 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41.47701 0 115 28.00000 41.47701 48.1% - 0s 0 0 40.82123 0 121 28.00000 40.82123 45.8% - 0s H 0 0 29.0000000 40.82123 40.8% - 0s 0 0 40.61396 0 119 29.00000 40.61396 40.0% - 0s 0 0 40.37236 0 120 29.00000 40.37236 39.2% - 0s 0 0 40.24209 0 119 29.00000 40.24209 38.8% - 0s 0 0 40.12672 0 120 29.00000 40.12672 38.4% - 0s 0 0 40.08972 0 117 29.00000 40.08972 38.2% - 0s H 0 0 30.0000000 40.08972 33.6% - 0s 0 0 39.95608 0 119 30.00000 39.95608 33.2% - 0s 0 0 39.84413 0 121 30.00000 39.84413 32.8% - 0s 0 0 39.73435 0 121 30.00000 39.73435 32.4% - 0s 0 0 39.63801 0 120 30.00000 39.63801 32.1% - 0s 0 0 39.59611 0 118 30.00000 39.59611 32.0% - 0s 0 0 39.57750 0 120 30.00000 39.57750 31.9% - 0s 0 0 39.57750 0 119 30.00000 39.57750 31.9% - 0s H 0 0 31.0000000 39.57750 27.7% - 0s 0 2 39.57750 0 119 31.00000 39.57750 27.7% - 0s * 11 11 6 33.0000000 39.49774 19.7% 59.6 0s Cutting planes: Clique: 4 Zero half: 51 Explored 933 nodes (27724 simplex iterations) in 1.09 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%