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tune axioms for derivatives

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2020-05-25 12:41:30 -07:00
parent 97b480ded3
commit 4e01d5b5c1
8 changed files with 207 additions and 65 deletions
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2
src/ast/rewriter/arith_rewriter.h
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@ -64,6 +64,8 @@ class arith_rewriter : public poly_rewriter<arith_rewriter_core> {
enum op_kind { LE, GE, EQ };
static op_kind inv(op_kind k) { return k == LE ? GE : (k == GE ? LE : EQ); }
bool is_bound(expr * arg1, expr * arg2, op_kind kind, expr_ref & result);
bool is_separated(expr * arg1, expr * arg2, op_kind kind, expr_ref & result);
bool is_non_negative(expr* e);
br_status mk_le_ge_eq_core(expr * arg1, expr * arg2, op_kind kind, expr_ref & result);
bool elim_to_real_var(expr * var, expr_ref & new_var);