Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:31:40 2014 Optimize a model with 2601 rows, 2551 columns and 10050 nonzeros Presolve time: 0.06s Presolved: 2601 rows, 2551 columns, 10050 nonzeros Variable types: 1 continuous, 2550 integer (2550 binary) Found heuristic solution: objective 1.0359253 Found heuristic solution: objective 1.0305319 Found heuristic solution: objective 0.6748653 Root relaxation: objective 1.877451e-01, 1627 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.18775 0 458 0.67487 0.18775 72.2% - 0s H 0 0 0.6331444 0.18775 70.3% - 0s H 0 0 0.3453994 0.18775 45.6% - 0s 0 0 0.19613 0 328 0.34540 0.19613 43.2% - 0s 0 0 0.19613 0 363 0.34540 0.19613 43.2% - 0s H 0 0 0.3298029 0.19613 40.5% - 0s 0 0 0.20569 0 337 0.32980 0.20569 37.6% - 0s 0 0 0.20902 0 342 0.32980 0.20902 36.6% - 0s 0 0 0.21303 0 332 0.32980 0.21303 35.4% - 0s 0 0 0.21323 0 331 0.32980 0.21323 35.3% - 0s 0 0 0.21323 0 335 0.32980 0.21323 35.3% - 0s 0 0 0.21323 0 306 0.32980 0.21323 35.3% - 0s 0 2 0.21329 0 306 0.32980 0.21329 35.3% - 0s * 12 10 8 0.3273797 0.21980 32.9% 140 0s * 13 9 8 0.3084096 0.21980 28.7% 129 0s * 19 5 4 0.2972862 0.24606 17.2% 100 0s * 20 3 4 0.2953753 0.24606 16.7% 94.9 0s * 22 3 3 0.2908550 0.28105 3.37% 94.1 0s Cutting planes: Gomory: 3 MIR: 2 Zero half: 5 Explored 26 nodes (10383 simplex iterations) in 0.76 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.908549644965e-01, best bound 2.908549644965e-01, gap 0.0%