Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:27:43 2014 Optimize a model with 1089 rows, 1057 columns and 4128 nonzeros Presolve time: 0.02s Presolved: 1089 rows, 1057 columns, 4128 nonzeros Variable types: 1 continuous, 1056 integer (1056 binary) Found heuristic solution: objective 0.8819043 Found heuristic solution: objective 0.7985427 Found heuristic solution: objective 0.7494296 Root relaxation: objective 2.007623e-01, 755 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.20076 0 248 0.74943 0.20076 73.2% - 0s H 0 0 0.3402892 0.20076 41.0% - 0s 0 0 0.26521 0 77 0.34029 0.26521 22.1% - 0s 0 0 0.26521 0 82 0.34029 0.26521 22.1% - 0s H 0 0 0.3384240 0.26521 21.6% - 0s H 0 0 0.3304139 0.26521 19.7% - 0s H 0 0 0.3233621 0.26521 18.0% - 0s 0 0 0.26521 0 59 0.32336 0.26521 18.0% - 0s 0 1 0.26521 0 59 0.32336 0.26521 18.0% - 0s H 1 1 0.3198807 0.26521 17.1% 161 0s H 1 1 0.3157830 0.26521 16.0% 161 0s Cutting planes: Gomory: 3 Implied bound: 2 MIR: 1 Explored 1 nodes (3306 simplex iterations) in 0.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.157830490414e-01, best bound 3.157830490414e-01, gap 0.0%