Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:08:54 2012 Optimize a model with 37 rows, 38 columns and 128 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 37 rows, 37 columns, 127 nonzeros Variable types: 0 continuous, 37 integer (36 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 0.000000e+00, 25 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 16 6.00000 0.00000 100% - 0s H 0 0 2.0000000 0.00000 100% - 0s 0 0 0.33540 0 19 2.00000 0.33540 83.2% - 0s 0 0 0.83883 0 21 2.00000 0.83883 58.1% - 0s 0 0 0.83883 0 23 2.00000 0.83883 58.1% - 0s 0 0 0.83883 0 7 2.00000 0.83883 58.1% - 0s 0 0 0.83883 0 12 2.00000 0.83883 58.1% - 0s 0 0 0.83883 0 13 2.00000 0.83883 58.1% - 0s 0 0 0.83883 0 12 2.00000 0.83883 58.1% - 0s 0 2 0.85606 0 12 2.00000 0.85606 57.2% - 0s Cutting planes: Gomory: 4 Cover: 1 Explored 6 nodes (123 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%