Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:28:16 2014 Optimize a model with 1369 rows, 1333 columns and 5220 nonzeros Presolve time: 0.02s Presolved: 1369 rows, 1333 columns, 5220 nonzeros Variable types: 1 continuous, 1332 integer (1332 binary) Found heuristic solution: objective 0.7977418 Found heuristic solution: objective 0.7920342 Found heuristic solution: objective 0.6634646 Root relaxation: objective 2.143539e-01, 949 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.21435 0 291 0.66346 0.21435 67.7% - 0s H 0 0 0.3518719 0.21435 39.1% - 0s 0 0 0.28693 0 91 0.35187 0.28693 18.5% - 0s 0 0 0.28693 0 65 0.35187 0.28693 18.5% - 0s 0 0 0.30612 0 69 0.35187 0.30612 13.0% - 0s H 0 0 0.3302773 0.30612 7.31% - 0s H 0 0 0.3162914 0.30612 3.21% - 0s 0 1 0.30612 0 69 0.31629 0.30612 3.21% - 0s H 1 1 0.3120112 0.30612 1.89% 158 0s Cutting planes: Gomory: 2 MIR: 2 Explored 1 nodes (5257 simplex iterations) in 0.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.120111580098e-01, best bound 3.120111580098e-01, gap 0.0%