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#5532

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This commit is contained in:
Nikolaj Bjorner 2021-09-20 11:39:16 -07:00
parent fd799089b7
commit 0170f1f461
1 changed files with 5 additions and 3 deletions
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8
src/sat/smt/q_mam.cpp
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@ -3558,12 +3558,14 @@ namespace q {
// For every application f(x_1, ..., x_n) of a function symbol f, n = f->get_arity().
// Starting at Z3 3.0, this is only true if !f->is_flat_associative().
// Thus, we need the extra checks.
(!is_flat_assoc || (curr_tree->m_arg_idx < curr_parent->num_args() &&
curr_tree->m_ground_arg_idx < curr_parent->num_args()))) {
curr_tree->m_arg_idx < curr_parent->num_args() &&
(!is_flat_assoc || curr_tree->m_ground_arg_idx < curr_parent->num_args())) {
enode * curr_parent_child = curr_parent->get_arg(curr_tree->m_arg_idx)->get_root();
if (// Filter 1. the curr_child is equal to child of the current parent.
curr_child == curr_parent_child &&
// Filter 2.
// Filter 2. m_ground_arg_idx is a valid argument
curr_tree->m_ground_arg_idx < curr_parent->num_args() &&
// Filter 3.
(
// curr_tree has no support for the filter based on a ground argument.
curr_tree->m_ground_arg == nullptr ||