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working on #5614

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there are some different sources for the performance regression illustrated by the example. The mitigations will be enabled separately:
- m_bv_to_propagate is too expensive
- lp_bound_propagator misses equalities in two different ways:
   - it resets row checks after backtracking even though they could still propagate
   - it misses equalities for fixed rows when the fixed constant value does not correspond to a fixed variable.

FYI @levnach
This commit is contained in:
Nikolaj Bjorner 2021-11-02 14:55:28 -07:00
parent a94e2e62af
commit 87d4ce2659
13 changed files with 422 additions and 385 deletions
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src/smt/smt_theory.h
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@ -453,9 +453,6 @@ namespace smt {
std::ostream& display_flat_app(std::ostream & out, app * n) const;
std::ostream& display_var_def(std::ostream & out, theory_var v) const { return display_app(out, get_enode(v)->get_expr()); }
std::ostream& display_var_flat_def(std::ostream & out, theory_var v) const { return display_flat_app(out, get_enode(v)->get_expr()); }
protected:
void log_axiom_instantiation(app * r, unsigned axiom_id = UINT_MAX, unsigned num_bindings = 0,