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add bound refinement propagation

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-08-12 10:10:31 -07:00
parent 7fc4653e47
commit be3c3dacb3
4 changed files with 74 additions and 30 deletions
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2
src/smt/params/smt_params_helper.pyg
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@ -64,7 +64,7 @@ def_module_params(module_name='smt',
('arith.nl.gr_q', UINT, 10, 'grobner\'s quota'),
('arith.nl.grobner_subs_fixed', UINT, 2, '0 - no subs, 1 - substitute, 2 - substitute fixed zeros only'),
('arith.propagate_eqs', BOOL, True, 'propagate (cheap) equalities'),
('arith.propagation_mode', UINT, 2, '0 - no propagation, 1 - propagate existing literals, 2 - refine bounds'),
('arith.propagation_mode', UINT, 1, '0 - no propagation, 1 - propagate existing literals, 2 - refine finite bounds'),
('arith.reflect', BOOL, True, 'reflect arithmetical operators to the congruence closure'),
('arith.branch_cut_ratio', UINT, 2, 'branch/cut ratio for linear integer arithmetic'),
('arith.int_eq_branch', BOOL, False, 'branching using derived integer equations'),

2
src/smt/params/theory_arith_params.h
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@ -34,7 +34,7 @@ enum arith_solver_id {
enum bound_prop_mode {
BP_NONE,
BP_SIMPLE, // only used for implying literals
BP_REFINE // refine known bounds
BP_REFINE // adds new literals, but only refines finite bounds
};
enum arith_prop_strategy {