Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:53:29 2012 Optimize a model with 665 rows, 118 columns and 1330 nonzeros Presolve removed 237 rows and 0 columns Presolve time: 0.00s Presolved: 428 rows, 118 columns, 1070 nonzeros Variable types: 0 continuous, 118 integer (118 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 4.101635e+01, 263 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 41.01635 0 115 26.00000 41.01635 57.8% - 0s H 0 0 28.0000000 41.01635 46.5% - 0s 0 0 40.67151 0 116 28.00000 40.67151 45.3% - 0s 0 0 40.54097 0 118 28.00000 40.54097 44.8% - 0s 0 0 40.29245 0 118 28.00000 40.29245 43.9% - 0s 0 0 40.11515 0 115 28.00000 40.11515 43.3% - 0s H 0 0 30.0000000 40.11515 33.7% - 0s 0 0 39.84196 0 116 30.00000 39.84196 32.8% - 0s 0 0 39.55570 0 116 30.00000 39.55570 31.9% - 0s 0 0 39.43395 0 117 30.00000 39.43395 31.4% - 0s H 0 0 31.0000000 39.43395 27.2% - 0s 0 0 39.32677 0 116 31.00000 39.32677 26.9% - 0s 0 0 39.24090 0 117 31.00000 39.24090 26.6% - 0s 0 0 39.11419 0 116 31.00000 39.11419 26.2% - 0s 0 0 39.06217 0 116 31.00000 39.06217 26.0% - 0s 0 0 38.96606 0 117 31.00000 38.96606 25.7% - 0s 0 0 38.96515 0 117 31.00000 38.96515 25.7% - 0s 0 0 38.96515 0 117 31.00000 38.96515 25.7% - 0s 0 2 38.96198 0 117 31.00000 38.96198 25.7% - 0s * 16 16 11 33.0000000 38.96198 18.1% 49.8 0s Cutting planes: Clique: 1 Zero half: 70 Explored 760 nodes (23410 simplex iterations) in 0.91 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%