Build (method = -2) #dp: 1234 Step-3' Graph: 78 vertices and 242 arcs (0.01s) Step-4' Graph: 37 vertices and 160 arcs (0.01s) #V4/#V3 = 0.47 #A4/#A3 = 0.66 Ready! (0.01s) Optimize a model with 45 rows, 161 columns and 419 nonzeros Presolve removed 10 rows and 21 columns Presolve time: 0.00s Presolved: 35 rows, 140 columns, 381 nonzeros Variable types: 0 continuous, 140 integer (0 binary) Found heuristic solution: objective 696.0000000 Optimize a model with 35 rows, 140 columns and 381 nonzeros Presolved: 35 rows, 140 columns, 381 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 2.050e+02 Factor NZ : 4.800e+02 Factor Ops : 7.970e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.33338756e+03 -2.12309858e+04 1.30e+04 1.11e-16 4.49e+02 0s 1 1.55092257e+03 -8.56661294e+03 1.89e+03 5.55e-16 7.53e+01 0s 2 6.48750940e+02 -2.00939177e+03 1.07e+02 1.44e-15 1.05e+01 0s 3 2.91367879e+02 -2.47920229e+02 1.03e+01 6.66e-16 1.92e+00 0s 4 1.84895951e+02 -2.46527509e+01 3.46e+00 2.50e-16 7.38e-01 0s 5 1.76356733e+02 7.63184205e+01 1.01e+00 2.38e-16 3.49e-01 0s 6 1.55072509e+02 1.26017011e+02 3.34e-01 2.22e-16 1.01e-01 0s 7 1.43010248e+02 1.42076202e+02 3.00e-03 3.33e-16 3.24e-03 0s 8 1.42857300e+02 1.42856366e+02 1.50e-12 2.75e-16 3.25e-06 0s 9 1.42857143e+02 1.42857143e+02 4.56e-12 2.22e-16 3.25e-12 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 1.42857143e+02 Root relaxation: objective 1.428571e+02, 93 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 142.85714 0 11 696.00000 142.85714 79.5% - 0s H 0 0 143.0000000 142.85714 0.10% - 0s Explored 0 nodes (119 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.430000000000e+02, best bound 1.430000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 143 Solution: 4 x [1, 1, 2, 4, 7, 8, 8] 29 x [1, 1, 2, 5, 7, 8, 8] 9 x [1, 3, 3, 4, 7, 7, 8] 2 x [1, 3, 4, 7, 7, 8, 8] 49 x [1, 3, 6, 7, 7, 8, 8] 1 x [1, 3, 7, 7, 8, 8] 49 x [3, 4, 4, 6, 7, 7, 7]