mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-08-22 11:07:51 +00:00
Code Activity

add colors

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-07-15 00:03:56 +02:00
commit 4c6e2acd45
56 changed files with 419 additions and 195 deletions
Download patch file Download diff file Expand all files Collapse all files

50
src/smt/theory_seq.cpp
View file

@ -402,8 +402,11 @@ final_check_status theory_seq::final_check_eh() {
++m_stats.m_branch_nqs;
TRACEFIN("branch_ne");
return FC_CONTINUE;
}
if (branch_itos()) {
TRACEFIN("branch_itos");
return FC_CONTINUE;
}
if (m_unhandled_expr) {
TRACEFIN("give_up");
TRACE("seq", tout << "unhandled: " << mk_pp(m_unhandled_expr, m) << "\n";);
@ -1539,14 +1542,55 @@ bool theory_seq::check_int_string() {
bool theory_seq::check_int_string(expr* e) {
expr* n = nullptr;
if (ctx.inconsistent())
return true;
return true;
if (m_util.str.is_itos(e, n) && !m_util.str.is_stoi(n) && add_length_to_eqc(e))
return true;
if (m_util.str.is_stoi(e, n) && !m_util.str.is_itos(n) && add_length_to_eqc(n))
return true;
return false;
}
bool theory_seq::branch_itos() {
bool change = false;
for (expr * e : m_int_string) {
if (branch_itos(e))
change = true;
}
return change;
}
bool theory_seq::branch_itos(expr* e) {
expr* n = nullptr;
rational val;
if (ctx.inconsistent())
return true;
if (!m_util.str.is_itos(e, n))
return false;
if (!ctx.e_internalized(e))
return false;
enode* r = ctx.get_enode(e)->get_root();
if (m_util.str.is_string(r->get_expr()))
return false;
if (!get_num_value(n, val))
return false;
if (val.is_neg())
return false;
literal b = mk_eq(e, m_util.str.mk_string(val.to_string()), false);
if (ctx.get_assignment(b) == l_true)
return false;
if (ctx.get_assignment(b) == l_false) {
literal a = mk_eq(n, m_autil.mk_int(val), false);
add_axiom(~a, b);
}
else {
ctx.force_phase(b);
ctx.mark_as_relevant(b);
}
return true;
}
void theory_seq::apply_sort_cnstr(enode* n, sort* s) {
mk_var(n);