Build (method = -2) #dp: 7922 Step-3' Graph: 314 vertices and 931 arcs (0.06s) Step-4' Graph: 88 vertices and 479 arcs (0.06s) #V4/#V3 = 0.28 #A4/#A3 = 0.51 Ready! (0.06s) Optimize a model with 134 rows, 480 columns and 1272 nonzeros Presolve removed 29 rows and 55 columns Presolve time: 0.00s Presolved: 105 rows, 425 columns, 1163 nonzeros Variable types: 0 continuous, 425 integer (70 binary) Found heuristic solution: objective 105.0000000 Found heuristic solution: objective 66.0000000 Optimize a model with 105 rows, 425 columns and 1163 nonzeros Presolved: 105 rows, 425 columns, 1163 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.130e+02 Factor NZ : 1.037e+03 Factor Ops : 1.360e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.74445564e+02 -9.64988278e+02 4.32e+02 9.05e-02 5.93e+00 0s 1 1.07172196e+02 -4.93353025e+02 2.34e+01 5.55e-16 8.70e-01 0s 2 5.13019959e+01 -5.30474757e+01 7.69e-03 2.78e-16 1.19e-01 0s 3 2.57064520e+01 1.23357595e+01 8.02e-04 3.26e-16 1.52e-02 0s 4 2.42167613e+01 2.35868861e+01 7.82e-14 3.09e-16 7.15e-04 0s 5 2.40001783e+01 2.39995298e+01 1.06e-12 2.96e-16 7.36e-07 0s 6 2.40000000e+01 2.40000000e+01 2.31e-14 2.51e-16 7.40e-13 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.40000000e+01 Root relaxation: objective 2.400000e+01, 299 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 24.00000 0 8 66.00000 24.00000 63.6% - 0s H 0 0 26.0000000 24.00000 7.69% - 0s H 0 0 25.0000000 24.00000 4.00% - 0s H 0 0 24.0000000 24.00000 0.0% - 0s Explored 0 nodes (383 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0% Preprocessing time: 0.06 seconds Gurobi run time: 0.02 seconds Total run time: 0.08 seconds Objective: 24 Solution: 1 x [20, 40, 45, 45, 46] 1 x [1, 9, 23, 44, 45] 1 x [1, 9, 28, 42, 44] 1 x [14, 15, 16, 33, 44] 3 x [2, 5, 36, 39, 43] 3 x [3, 26, 27, 39, 42] 3 x [6, 10, 11, 31, 41] 2 x [13, 19, 22, 27, 41] 1 x [1, 12, 32, 35, 38] 1 x [25, 25, 29, 35, 38] 1 x [4, 13, 26, 34, 38] 1 x [4, 5, 7, 24, 37] 1 x [4, 19, 21, 22, 36] 2 x [1, 8, 12, 30, 30] 2 x [12, 13, 15, 17, 18]