Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:27:11 2014 Optimize a model with 1486 rows, 757 columns and 3645 nonzeros Presolve removed 27 rows and 0 columns Presolve time: 0.04s Presolved: 1459 rows, 757 columns, 3618 nonzeros Variable types: 1 continuous, 756 integer (756 binary) Found heuristic solution: objective 0.6723264 Found heuristic solution: objective 0.6470229 Found heuristic solution: objective 0.6264432 Root relaxation: objective 2.534937e-02, 685 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.02535 0 437 0.62644 0.02535 96.0% - 0s H 0 0 0.5353899 0.02535 95.3% - 0s 0 0 0.03535 0 313 0.53539 0.03535 93.4% - 0s 0 0 0.26161 0 179 0.53539 0.26161 51.1% - 0s H 0 0 0.4782676 0.26161 45.3% - 0s 0 0 0.28037 0 143 0.47827 0.28037 41.4% - 0s H 0 0 0.4630999 0.28037 39.5% - 0s 0 0 0.31267 0 117 0.46310 0.31267 32.5% - 0s H 0 0 0.4382387 0.31267 28.7% - 0s 0 0 0.31347 0 128 0.43824 0.31347 28.5% - 0s 0 0 0.31379 0 139 0.43824 0.31379 28.4% - 0s 0 0 0.31394 0 135 0.43824 0.31394 28.4% - 0s 0 0 0.31424 0 147 0.43824 0.31424 28.3% - 0s 0 0 0.31454 0 140 0.43824 0.31454 28.2% - 0s 0 0 0.31454 0 142 0.43824 0.31454 28.2% - 0s 0 0 0.31454 0 125 0.43824 0.31454 28.2% - 0s H 0 0 0.4258496 0.31454 26.1% - 0s 0 0 0.36641 0 79 0.42585 0.36641 14.0% - 0s H 0 0 0.4237725 0.36641 13.5% - 0s 0 1 0.36641 0 79 0.42377 0.36641 13.5% - 0s H 1 1 0.4191710 0.36641 12.6% 142 0s * 3 2 11 0.4008199 0.40082 0.00% 47.3 0s Explored 3 nodes (5137 simplex iterations) in 0.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.008198560419e-01, best bound 4.008198560419e-01, gap 0.0%