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add flag to control non-linear substitutions: smt.solve_eqs.linear is by default false, setting it to true restricts solutions to substitutions to only use linear terms. This can have an effect on cross-multiplication of nested substitutions

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2026-04-12 09:41:46 -07:00
parent 1544462f47
commit 1566d3cc41
3 changed files with 17 additions and 1 deletions
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src/params/smt_params_helper.pyg
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@ -21,6 +21,7 @@ def_module_params(module_name='smt',
('elim_unconstrained', BOOL, True, 'pre-processing: eliminate unconstrained subterms'),
('solve_eqs', BOOL, True, 'pre-processing: solve equalities'),
('solve_eqs.non_ground', BOOL, True, 'pre-processing: solve equalities. Allow eliminating variables by non-ground solutions which can break behavior for model evaluation.'),
('solve_eqs.linear', BOOL, False, 'allow only linear substitutions where a variable is replaced by a term having at most one non-constant argument'),
('propagate_values', BOOL, True, 'pre-processing: propagate values'),
('bound_simplifier', BOOL, True, 'apply bounds simplification during pre-processing'),
('pull_nested_quantifiers', BOOL, False, 'pre-processing: pull nested quantifiers'),