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https://github.com/Z3Prover/z3
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add missing check for difference logic fragment for clause heads
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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@ -130,7 +130,6 @@ namespace api {
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ast_manager& m = m_context.get_manager();
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datalog::context ctx(m, m_context.get_fparams());
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// datalog::rule_manager& rm = ctx.get_rule_manager();
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for (unsigned i = 0; i < num_rules; ++i) {
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expr* rule = rules[i], *body, *head;
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while (true) {
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@ -1283,9 +1283,10 @@ namespace pdr {
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for (it = rules.begin(); it != end; ++it) {
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datalog::rule& r = *(*it);
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unsigned utsz = r.get_uninterpreted_tail_size();
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forms.push_back(r.get_head());
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for (unsigned i = utsz; i < r.get_tail_size(); ++i) {
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forms.push_back(r.get_tail(i));
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}
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}
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}
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m_is_dl = is_difference_logic(m, forms.size(), forms.c_ptr());
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}
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