LRA: Use smaller value in delta computation #444
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added 3 commits
March 10, 2022 10:40
In our current implementation of model-based theory combination, we need to make sure that two classes of interface variables do not collapse for our computed value of Simplex's delta. Lowering the max value should help to avoid deciding some pairs of classes explicitly.
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This PR makes explicit the connection between the maximum delta value used in the Simplex model computation and the bound value that needs to be considered in model-based theory combination.
It also lowers this max value from
1(original) to1/2(new). This should result in less pairs of interface variables that need to be considered in UFLRA in order to get correct model.