Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:27:36 2014 Optimize a model with 1024 rows, 993 columns and 3875 nonzeros Presolve time: 0.01s Presolved: 1024 rows, 993 columns, 3875 nonzeros Variable types: 1 continuous, 992 integer (992 binary) Found heuristic solution: objective 1.1168678 Found heuristic solution: objective 1.0606779 Found heuristic solution: objective 0.7874882 Root relaxation: objective 1.959075e-01, 734 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.19591 0 223 0.78749 0.19591 75.1% - 0s H 0 0 0.5538518 0.19591 64.6% - 0s 0 0 0.19904 0 226 0.55385 0.19904 64.1% - 0s 0 0 0.19904 0 221 0.55385 0.19904 64.1% - 0s H 0 0 0.4945972 0.19904 59.8% - 0s 0 0 0.19904 0 230 0.49460 0.19904 59.8% - 0s H 0 0 0.4750546 0.19904 58.1% - 0s 0 0 0.20322 0 190 0.47505 0.20322 57.2% - 0s H 0 0 0.4668112 0.20322 56.5% - 0s H 0 0 0.4646683 0.20322 56.3% - 0s 0 2 0.20689 0 190 0.46467 0.20689 55.5% - 0s H 1 2 0.3670767 0.20689 43.6% 140 0s H 4 3 0.3527120 0.22777 35.4% 35.0 0s H 5 4 0.3486958 0.25462 27.0% 28.0 0s H 5 4 0.3284872 0.25462 22.5% 28.0 0s H 7 4 0.3251849 0.27883 14.3% 20.0 0s H 10 6 0.3151795 0.28905 8.29% 146 0s Cutting planes: Gomory: 1 MIR: 1 Explored 11 nodes (4807 simplex iterations) in 0.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.151795316792e-01, best bound 3.151795316792e-01, gap 0.0%