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**Describe the bug**
```
ERROR: Alpine does not support MINLPs with generic integer (non-binary) variables yet!
Stacktrace:
[1] error(s::String)
@ Base ./error.jl:35
[2] load!(m::Alpine.O…
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I'm working on solving a MINLP problem but I'm getting this message: MathOptInterface.UpperBoundAlreadySet{MathOptInterface.Interval{Float64}, MathOptInterface.LessThan{Float64}}: Cannot add `Variable…
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I was looking at the (great collection of) examples provided in this package and noticed that other than binary variables, other variable definitions don't seem to have the domain specified (integer).…
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After solving a model with Baron directly
solver = SolverFactory('baron')
results=solver.solve(model)
I get the below error:
File "/Users/c184156/anaconda3/envs/mypyomo55/lib/python3.6/site…
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Whilst we support discrete variables and (in theory) you can use optas for mixed-integer optimization, there does not exist a dedicated `Optimization` sub-class for handling this specific use-case. It…
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# Problem
I am trying to solve a integer programming problem with nonlinear constraints, more specifically polynomial on the variables.
When I set the model with strict inequalities, the solver y…
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![76MD4SRN4E0)PXSMX1R{KMF](https://github.com/ChrisFuelOR/NCNBD.jl/assets/143272683/34210c71-4a74-44c2-a8a4-59b4f43f251c)
see the png file please.
I'm using Julia 1.9.3.
I create a blank env, and u…
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```
ERROR: MathOptInterface.UpperBoundAlreadySet{MathOptInterface.Interval{Float64}, MathOptInterface.LessThan{Float64}}: Cannot add `VariableIndex`-in-`MathOptInterface.LessThan{Float64}` constraint…
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Hi, I am trying to solve an MINLP problem, but I am getting error output below
LoadError: Problem is a MINLP and no MINLP local solver given; use minlp_solver to specify a MINLP local solver in exp…
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## Summary
### Symptoms
- After updating to Pyomo 6.6.1, we noticed that one of the flowsheets in DISPATCHES solved to a different solution than expected, causing the corresponding test to fail
…