Build (method = -2) #dp: 979 Step-3' Graph: 59 vertices and 168 arcs (0.00s) Step-4' Graph: 5 vertices and 60 arcs (0.00s) #V4/#V3 = 0.08 #A4/#A3 = 0.36 Ready! (0.00s) Optimize a model with 24 rows, 61 columns and 179 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 22 rows, 59 columns, 175 nonzeros Variable types: 0 continuous, 59 integer (0 binary) Found heuristic solution: objective 1999.0000000 Found heuristic solution: objective 1927.0000000 Optimize a model with 22 rows, 59 columns and 175 nonzeros Presolved: 22 rows, 59 columns, 175 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.000e+01 Factor NZ : 2.530e+02 Factor Ops : 3.795e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.46660077e+03 -5.50364139e+03 2.86e+02 0.00e+00 1.62e+02 0s 1 1.44744845e+03 -1.77163595e+03 1.66e+01 3.33e-16 2.71e+01 0s 2 7.68194409e+02 3.86227619e+02 1.26e-01 5.00e-16 2.80e+00 0s 3 6.70687133e+02 6.04225449e+02 1.03e-03 4.44e-16 4.85e-01 0s 4 6.67132311e+02 6.64299855e+02 3.33e-13 3.33e-16 2.07e-02 0s 5 6.66667284e+02 6.66666494e+02 2.12e-13 3.33e-16 5.77e-06 0s 6 6.66666667e+02 6.66666667e+02 1.80e-13 1.80e-16 5.79e-12 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 6.66666667e+02 Root relaxation: objective 6.666667e+02, 49 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 666.66667 0 4 1927.00000 666.66667 65.4% - 0s H 0 0 667.0000000 666.66667 0.05% - 0s Explored 0 nodes (72 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.670000000000e+02, best bound 6.670000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 667 Solution: 73 x [10, 11, 18] 86 x [5, 17, 19] 4 x [6, 11, 12] 2 x [6, 12, 15] 14 x [2, 15, 17] 128 x [4, 11, 15] 134 x [3, 8, 11] 14 x [6, 11, 16] 18 x [6, 8, 15] 1 x [5, 6, 17] 10 x [9, 10, 17] 1 x [6, 10] 12 x [1, 14, 15] 9 x [1, 5, 9] 106 x [9, 13, 14] 55 x [7, 9, 16]