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fix performance for model construction, recognize concats of values as a value for pre-processing

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-03-23 17:23:57 -07:00
parent 72ec6dc8e1
commit 45fdb95f53
9 changed files with 163 additions and 244 deletions
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6
src/ast/rewriter/seq_rewriter.cpp
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@ -246,6 +246,8 @@ eautomaton* re2automaton::re2aut(expr* e) {
expr_ref _stop(bv.mk_numeral(stop, nb), m);
expr_ref _pred(m.mk_not(m.mk_and(bv.mk_ule(_start, v), bv.mk_ule(v, _stop))), m);
a = alloc(eautomaton, sm, sym_expr::mk_pred(_pred, s));
display_expr1 disp(m);
TRACE("seq", tout << mk_pp(e, m) << "\n"; a->display(tout, disp););
return a.detach();
}
else if (u.re.is_to_re(e0, e1) && u.str.is_string(e1, s1) && s1.length() == 1) {
@ -255,6 +257,8 @@ eautomaton* re2automaton::re2aut(expr* e) {
expr_ref _ch(bv.mk_numeral(s1[0], nb), m);
expr_ref _pred(m.mk_not(m.mk_eq(v, _ch)), m);
a = alloc(eautomaton, sm, sym_expr::mk_pred(_pred, s));
display_expr1 disp(m);
TRACE("seq", tout << mk_pp(e, m) << "\n"; a->display(tout, disp););
return a.detach();
}
else if (u.re.is_to_re(e0, e1) && u.str.is_unit(e1, e2)) {
@ -262,6 +266,8 @@ eautomaton* re2automaton::re2aut(expr* e) {
expr_ref v(m.mk_var(0, s), m);
expr_ref _pred(m.mk_not(m.mk_eq(v, e2)), m);
a = alloc(eautomaton, sm, sym_expr::mk_pred(_pred, s));
display_expr1 disp(m);
TRACE("seq", tout << mk_pp(e, m) << "\n"; a->display(tout, disp););
return a.detach();
}
else {