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add outline for interval reasoning

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2023-01-22 23:28:36 -08:00
parent 273aff5ed6
commit 3b5ae285d9
4 changed files with 70 additions and 4 deletions
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12
src/ast/simplifiers/bound_simplifier.h
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@ -23,14 +23,21 @@ Description:
#include "ast/rewriter/th_rewriter.h"
#include "ast/simplifiers/dependent_expr_state.h"
#include "ast/simplifiers/bound_propagator.h"
#include "math/interval/interval.h"
class bound_simplifier : public dependent_expr_simplifier {
typedef interval_manager<im_default_config> interval_manager;
typedef interval_manager::interval interval;
typedef _scoped_interval<interval_manager> scoped_interval;
arith_util a;
th_rewriter m_rewriter;
unsynch_mpq_manager nm;
small_object_allocator m_alloc;
bound_propagator bp;
im_default_config i_cfg;
interval_manager i_manager;
unsigned m_num_vars = 0;
ptr_vector<expr> m_var2expr;
unsigned_vector m_expr2var;
@ -68,6 +75,7 @@ class bound_simplifier : public dependent_expr_simplifier {
bool has_upper(expr* x, rational& n, bool& strict);
bool has_lower(expr* x, rational& n, bool& strict);
void get_bounds(expr* x, scoped_interval&);
// e = x + offset
bool is_offset(expr* e, expr* x, rational& offset);
@ -78,7 +86,9 @@ public:
dependent_expr_simplifier(m, fmls),
a(m),
m_rewriter(m),
bp(nm, m_alloc, p) {
bp(nm, m_alloc, p),
i_cfg(nm),
i_manager(m.limit(), im_default_config(nm)) {
}
char const* name() const override { return "bounds-simplifier"; }