Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:43:23 2014 Optimize a model with 5041 rows, 4971 columns and 19670 nonzeros Presolve time: 0.12s Presolved: 5041 rows, 4971 columns, 19670 nonzeros Variable types: 1 continuous, 4970 integer (4970 binary) Found heuristic solution: objective 1.2494276 Found heuristic solution: objective 1.0659214 Found heuristic solution: objective 0.9930614 Root relaxation: objective 1.528046e-01, 1959 iterations, 0.15 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.15280 0 610 0.99306 0.15280 84.6% - 0s H 0 0 0.8095333 0.15280 81.1% - 0s H 0 0 0.2714287 0.15280 43.7% - 0s 0 0 0.19618 0 228 0.27143 0.19618 27.7% - 0s 0 0 0.19618 0 214 0.27143 0.19618 27.7% - 1s H 0 0 0.2679726 0.19618 26.8% - 1s H 0 0 0.2657621 0.19618 26.2% - 1s H 0 0 0.2638472 0.19618 25.6% - 1s 0 0 0.19969 0 324 0.26385 0.19969 24.3% - 1s 0 0 0.20908 0 286 0.26385 0.20908 20.8% - 1s H 0 0 0.2634475 0.20908 20.6% - 1s H 0 0 0.2631860 0.20908 20.6% - 1s 0 0 0.21994 0 279 0.26319 0.21994 16.4% - 1s H 0 0 0.2609792 0.21994 15.7% - 1s 0 0 0.22231 0 156 0.26098 0.22231 14.8% - 1s H 0 0 0.2588858 0.22231 14.1% - 1s 0 1 0.22231 0 156 0.25889 0.22231 14.1% - 1s H 1 1 0.2535419 0.22231 12.3% 362 1s * 3 2 14 0.2427887 0.24279 0.00% 121 1s Explored 3 nodes (13631 simplex iterations) in 1.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.427886970595e-01, best bound 2.427886970595e-01, gap 0.0%