Build (method = -2) #dp: 323 Step-3' Graph: 45 vertices and 180 arcs (0.00s) Step-4' Graph: 32 vertices and 154 arcs (0.00s) #V4/#V3 = 0.71 #A4/#A3 = 0.86 Ready! (0.00s) Optimize a model with 52 rows, 155 columns and 410 nonzeros Presolve removed 16 rows and 21 columns Presolve time: 0.00s Presolved: 36 rows, 134 columns, 359 nonzeros Variable types: 0 continuous, 134 integer (0 binary) Found heuristic solution: objective 198.0000000 Found heuristic solution: objective 159.0000000 Optimize a model with 36 rows, 134 columns and 359 nonzeros Presolved: 36 rows, 134 columns, 359 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.860e+02 Factor NZ : 5.230e+02 Factor Ops : 9.199e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 8.20280502e+02 -1.84817762e+03 2.25e+03 2.22e-16 3.75e+01 0s 1 3.21267719e+02 -7.02891438e+02 3.80e+02 2.50e-16 7.44e+00 0s 2 1.62713685e+02 -7.41959610e+01 7.44e+00 2.34e-14 8.92e-01 0s 3 1.13945531e+02 3.79335358e+01 3.69e-01 6.99e-15 2.74e-01 0s 4 9.91256894e+01 7.80232279e+01 4.54e-02 1.89e-15 7.60e-02 0s 5 9.54855773e+01 8.78221048e+01 1.13e-02 7.77e-16 2.76e-02 0s 6 9.46809661e+01 9.37098870e+01 1.87e-03 2.62e-16 3.50e-03 0s 7 9.45076362e+01 9.44766987e+01 1.05e-05 3.74e-16 1.11e-04 0s 8 9.45000076e+01 9.44999767e+01 3.41e-13 3.22e-16 1.11e-07 0s 9 9.45000000e+01 9.45000000e+01 5.40e-13 3.33e-16 1.12e-13 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 9.45000000e+01 Root relaxation: objective 9.450000e+01, 63 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 94.50000 0 2 159.00000 94.50000 40.6% - 0s H 0 0 95.0000000 94.50000 0.53% - 0s Explored 0 nodes (78 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 9.500000000000e+01, best bound 9.500000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 95 Solution: 2 x [8, 20] 2 x [1, 6] 9 x [5, 20] 11 x [2, 18] 4 x [4, 11] 4 x [11, 18] 3 x [7, 12] 3 x [3, 17, 18] 6 x [9, 12] 13 x [1, 9] 2 x [15, 20] 6 x [13, 15, 20] 12 x [10, 16] 4 x [10, 10] 1 x [19] 10 x [19, 19] 2 x [1, 1, 14] 1 x [14, 14]