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JuliaConstraints / CPLEXCP.jl

Julia interface for CPLEX CP Optimizer
MIT License
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unable to optimize #8

Closed 1991jhf closed 2 years ago

1991jhf commented 2 years ago

Hi, I'm using cplexcp with JuMP. I'm able to add variables, constraints and objective. However when I try to optimize, it failed. 

    model=JuMP.Model(CPLEXCP.Optimizer)
    var=[@variable(model,binary=true) for _ in 1:100]
    con=@constraint(model,sum(var)<=50)
    @objective(model,Min,sum(var.*rand(100)))
    optimize!(model)

Exception in thread "main" java.lang.ClassCastException: class [Lilog.concert.IloNumVar; cannot be cast to class [Lilog.concert.IloIntVar; ([Lilog.concert.IloNumVar; and [Lilog.concert.IloIntVar; are in unnamed module of loader 'app') at ilog.concert.IloModelerImpl.scalProd(IloModelerImpl.java:488) at ilog.concert.IloModelerImpl.scalProd(IloModelerImpl.java:467) ERROR: JavaCall.JavaCallError("Error calling Java: java.lang.ClassCastException: class [Lilog.concert.IloNumVar; cannot be cast to class [Lilog.concert.IloIntVar; ([Lilog.concert.IloNumVar; and [Lilog.concert.IloIntVar; are in unnamed module of loader 'app')")