Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:26:48 2014 Optimize a model with 529 rows, 507 columns and 1958 nonzeros Presolve time: 0.01s Presolved: 529 rows, 507 columns, 1958 nonzeros Variable types: 1 continuous, 506 integer (506 binary) Found heuristic solution: objective 0.9297205 Found heuristic solution: objective 0.8983469 Found heuristic solution: objective 0.6112811 Root relaxation: objective 2.411164e-01, 452 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.24112 0 165 0.61128 0.24112 60.6% - 0s H 0 0 0.5811642 0.24112 58.5% - 0s H 0 0 0.5013748 0.24112 51.9% - 0s 0 0 0.24738 0 148 0.50137 0.24738 50.7% - 0s 0 0 0.24738 0 145 0.50137 0.24738 50.7% - 0s H 0 0 0.5009459 0.24738 50.6% - 0s 0 0 0.28767 0 101 0.50095 0.28767 42.6% - 0s H 0 0 0.4901325 0.28767 41.3% - 0s 0 0 0.30847 0 71 0.49013 0.30847 37.1% - 0s H 0 0 0.4791760 0.30847 35.6% - 0s H 0 0 0.4144435 0.30847 25.6% - 0s 0 0 0.38798 0 40 0.41444 0.38798 6.39% - 0s H 0 0 0.4050939 0.38798 4.22% - 0s 0 1 0.40028 0 40 0.40509 0.40028 1.19% - 0s Explored 2 nodes (2067 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.002760221446e-01, best bound 4.002760221446e-01, gap 0.0%