Build (method = -2) #dp: 181 Step-3' Graph: 39 vertices and 120 arcs (0.00s) Step-4' Graph: 30 vertices and 102 arcs (0.00s) #V4/#V3 = 0.77 #A4/#A3 = 0.85 Ready! (0.00s) Optimize a model with 40 rows, 103 columns and 261 nonzeros Presolve removed 14 rows and 20 columns Presolve time: 0.00s Presolved: 26 rows, 83 columns, 217 nonzeros Variable types: 0 continuous, 83 integer (3 binary) Found heuristic solution: objective 97.0000000 Found heuristic solution: objective 88.0000000 Found heuristic solution: objective 84.0000000 Optimize a model with 26 rows, 83 columns and 217 nonzeros Presolved: 26 rows, 83 columns, 217 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.100e+02 Factor NZ : 3.060e+02 Factor Ops : 4.626e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.86636278e+02 -1.17752777e+03 4.76e+02 1.84e-01 3.65e+01 0s 1 1.40076365e+02 -4.67512011e+02 9.32e+01 5.00e-16 7.45e+00 0s 2 8.38066196e+01 -6.99198398e+01 1.33e+00 3.89e-16 9.36e-01 0s 3 6.93392684e+01 4.55732866e+01 5.34e-03 2.43e-16 1.41e-01 0s 4 6.13343709e+01 5.94364867e+01 1.02e-04 1.98e-16 1.12e-02 0s 5 6.10010812e+01 6.09975824e+01 3.37e-07 2.22e-16 2.07e-05 0s 6 6.10000000e+01 6.10000000e+01 3.80e-13 2.63e-16 2.30e-11 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 6.10000000e+01 Root relaxation: objective 6.100000e+01, 44 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 61.0000000 61.00000 0.0% - 0s Explored 0 nodes (44 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.100000000000e+01, best bound 6.100000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 61 Solution: 8 x [8] 8 x [6] 5 x [9] 6 x [2, 2, 9] 4 x [1] 10 x [1, 3] 9 x [7] 2 x [4] 1 x [4, 10] 8 x [4, 5, 5]