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fix #3028

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-02-17 00:20:01 -10:00
parent 8428970a1f
commit 234b53b831
3 changed files with 7 additions and 15 deletions
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14
src/tactic/arith/fix_dl_var_tactic.cpp
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@ -25,7 +25,6 @@ Revision History:
#include "ast/rewriter/th_rewriter.h"
#include "tactic/generic_model_converter.h"
#include "ast/arith_decl_plugin.h"
#include "ast/seq_decl_plugin.h"
#include "ast/expr_substitution.h"
#include "ast/ast_smt2_pp.h"
@ -35,7 +34,6 @@ class fix_dl_var_tactic : public tactic {
struct failed {};
ast_manager & m;
arith_util & m_util;
seq_util m_seq;
expr_fast_mark1 * m_visited;
ptr_vector<expr> m_todo;
obj_map<app, unsigned> m_occs;
@ -43,8 +41,7 @@ class fix_dl_var_tactic : public tactic {
is_target(arith_util & u):
m(u.get_manager()),
m_util(u),
m_seq(m) {
m_util(u){
}
void throw_failed(expr * ctx1, expr * ctx2 = nullptr) {
@ -56,15 +53,6 @@ class fix_dl_var_tactic : public tactic {
sort * s = m.get_sort(n);
return s->get_family_id() == m_util.get_family_id();
}
// Return true if n is uninterpreted with respect to arithmetic.
// sequence theory is not disjoint from arithmetic
bool is_uninterp(expr * n) {
if (!is_app(n)) return false;
app* t = to_app(n);
family_id fid = t->get_family_id();
return fid != m_util.get_family_id() && fid != m_seq.get_family_id();
}
// Remark: we say an expression is nested, if it occurs inside the boolean structure of the formula.
// That is, the expression is not part of an unit clause comprising of a single inequality/equality.