Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:49 2012 Optimize a model with 131 rows, 117 columns and 442 nonzeros Presolve removed 0 rows and 4 columns Presolve time: 0.00s Presolved: 131 rows, 113 columns, 438 nonzeros Variable types: 0 continuous, 113 integer (112 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 0.000000e+00, 65 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 47 30.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.33845 0 49 16.00000 0.33845 97.9% - 0s H 0 0 11.0000000 0.33845 96.9% - 0s H 0 0 10.0000000 0.33845 96.6% - 0s 0 0 0.84078 0 53 10.00000 0.84078 91.6% - 0s 0 0 0.84340 0 54 10.00000 0.84340 91.6% - 0s 0 0 0.84340 0 54 10.00000 0.84340 91.6% - 0s 0 2 0.86131 0 54 10.00000 0.86131 91.4% - 0s * 11 10 7 8.0000000 3.03090 62.1% 25.4 0s * 26 8 5 7.0000000 3.60593 48.5% 18.8 0s Cutting planes: Gomory: 3 Zero half: 3 Explored 42 nodes (1096 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%