Open raphaelboudreault opened 3 months ago
Hello, I am facing a similar issue when working with float and integer variables in MiniZinc. I’ve noticed that when I change the upper bound for my float variables, I also get different results from the solver. I haven’t found a solution yet, and I’m wondering if anyone has come across this issue or if there's a workaround. Thank you!
OS: Linux Ubuntu 22.04 MZN version: 2.8.5
Hello! I am currently working on a MiniZinc model involving float and integer variables, using a linear solver (in my case, SCIP 8.0.4). In the model, I have an array of float variable declared under the form
array[X, Y] of var 0.0..<float bound>: x
, involved in numerous constraints. However, depending on the value used for<float bound>
, I am getting different results. Using a value of1000.0
, the returned solution is optimal and as expected. Using instead a value of100000000.0
, the solver returns UNSAT. See attached the generated FZN in both cases, which differ only by a factor in the domains and paremeters. Clearly, this is not an expected behavior, and I wonder if it is related to MiniZinc or the solver. CPLEX allows instead an unfeasible solution using the biggest value.On another note, using
leads to
where I felt like the two formulations should be equivalent from the point of view of MiniZinc. Thanks!
linear_NO.txt linear_OK.txt