Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:27:59 2014 Optimize a model with 1225 rows, 1191 columns and 4658 nonzeros Presolve time: 0.02s Presolved: 1225 rows, 1191 columns, 4658 nonzeros Variable types: 1 continuous, 1190 integer (1190 binary) Found heuristic solution: objective 0.9186392 Found heuristic solution: objective 0.7437217 Found heuristic solution: objective 0.6554104 Root relaxation: objective 2.055783e-01, 852 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.20558 0 225 0.65541 0.20558 68.6% - 0s H 0 0 0.4718776 0.20558 56.4% - 0s H 0 0 0.3430714 0.20558 40.1% - 0s 0 0 0.30216 0 67 0.34307 0.30216 11.9% - 0s 0 0 0.30216 0 71 0.34307 0.30216 11.9% - 0s H 0 0 0.3398737 0.30216 11.1% - 0s * 0 0 0 0.3368687 0.33687 0.00% - 0s Cutting planes: Gomory: 1 Implied bound: 3 Explored 0 nodes (3253 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.368687420175e-01, best bound 3.368687420175e-01, gap 0.0%