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W_{k, r, i}+t_{i, j}+s_{i}-W_{k, r, j} \leq\left(1-X_{k, r, j, j}\right) \max \left(0, \mathrm{UB}_{i}+t_{i, j}-\mathrm{LB}_{j}\right) ; \quad \forall i, j \in N, \forall k \in K, \forall r \in R