Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:29:25 2014 Optimize a model with 3571 rows, 1807 columns and 8820 nonzeros Presolve removed 42 rows and 0 columns Presolve time: 0.12s Presolved: 3529 rows, 1807 columns, 8778 nonzeros Variable types: 1 continuous, 1806 integer (1806 binary) Found heuristic solution: objective 1.1157702 Found heuristic solution: objective 0.9044614 Found heuristic solution: objective 0.8470122 Root relaxation: objective 8.385581e-03, 2370 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00839 0 1648 0.84701 0.00839 99.0% - 0s H 0 0 0.3567943 0.00839 97.6% - 0s 0 0 0.03722 0 326 0.35679 0.03722 89.6% - 0s 0 0 0.17324 0 288 0.35679 0.17324 51.4% - 0s H 0 0 0.3487809 0.17324 50.3% - 0s 0 0 0.19265 0 198 0.34878 0.19265 44.8% - 0s H 0 0 0.3470386 0.19265 44.5% - 0s 0 0 0.20214 0 262 0.34704 0.20214 41.8% - 0s H 0 0 0.3364178 0.20214 39.9% - 0s 0 0 0.20236 0 279 0.33642 0.20236 39.8% - 0s H 0 0 0.3179350 0.20236 36.4% - 0s 0 0 0.20833 0 167 0.31793 0.20833 34.5% - 0s H 0 0 0.2909889 0.20833 28.4% - 0s H 0 0 0.2671460 0.20833 22.0% - 0s 0 2 0.26447 0 20 0.26715 0.26447 1.00% - 0s Cutting planes: Gomory: 2 MIR: 3 Explored 3 nodes (10317 simplex iterations) in 0.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.671460025718e-01, best bound 2.671460025718e-01, gap 0.0%