Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:26:37 2014 Optimize a model with 667 rows, 343 columns and 1620 nonzeros Found heuristic solution: objective 1.00259 Presolve removed 18 rows and 0 columns Presolve time: 0.01s Presolved: 649 rows, 343 columns, 1602 nonzeros Variable types: 1 continuous, 342 integer (342 binary) Root relaxation: objective 2.664832e-02, 509 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.02665 0 314 1.00259 0.02665 97.3% - 0s H 0 0 0.7630973 0.02665 96.5% - 0s 0 0 0.05851 0 270 0.76310 0.05851 92.3% - 0s H 0 0 0.7152067 0.05851 91.8% - 0s 0 0 0.09536 0 206 0.71521 0.09536 86.7% - 0s H 0 0 0.5820037 0.09536 83.6% - 0s H 0 0 0.4435415 0.09536 78.5% - 0s * 0 0 0 0.4399287 0.43993 0.00% - 0s Cutting planes: Gomory: 56 Explored 0 nodes (1253 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.399287143533e-01, best bound 4.399287143533e-01, gap 0.0%