Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:47 2012 Optimize a model with 43 rows, 41 columns and 146 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 43 rows, 40 columns, 145 nonzeros Variable types: 0 continuous, 40 integer (39 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 0.000000e+00, 26 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 18 7.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.35165 0 20 4.00000 0.35165 91.2% - 0s 0 0 1.04114 0 21 4.00000 1.04114 74.0% - 0s 0 0 1.04630 0 22 4.00000 1.04630 73.8% - 0s 0 0 1.04630 0 22 4.00000 1.04630 73.8% - 0s H 0 0 3.0000000 1.04630 65.1% - 0s 0 2 1.06324 0 22 3.00000 1.06324 64.6% - 0s Cutting planes: Gomory: 4 Mod-K: 3 Explored 54 nodes (299 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%