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https://github.com/Z3Prover/z3
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a pending issue from #4866
https://github.com/Z3Prover/z3/issues/4866#issuecomment-748658905
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@ -340,6 +340,8 @@ namespace smt {
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void context::ensure_internalized(expr* e) {
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if (!e_internalized(e))
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internalize(e, false);
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if (is_app(e))
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internalize_term(to_app(e));
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}
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/**
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@ -354,9 +356,8 @@ namespace smt {
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void context::internalize(expr* const* exprs, unsigned num_exprs, bool gate_ctx) {
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internalize_deep(exprs, num_exprs);
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for (unsigned i = 0; i < num_exprs; ++i) {
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for (unsigned i = 0; i < num_exprs; ++i)
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internalize_rec(exprs[i], gate_ctx);
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}
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}
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void context::internalize_rec(expr * n, bool gate_ctx) {
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@ -161,9 +161,9 @@ namespace smt {
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}
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enode* theory::ensure_enode(expr* e) {
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if (!ctx.e_internalized(e)) {
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if (!ctx.e_internalized(e))
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ctx.internalize(e, is_quantifier(e));
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}
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ctx.ensure_internalized(e); // make sure theory variables are attached.
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enode* n = ctx.get_enode(e);
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ctx.mark_as_relevant(n);
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return n;
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@ -2810,6 +2810,7 @@ void theory_seq::assign_eh(bool_var v, bool is_true) {
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f = m_sk.mk_prefix_inv(se1, se2);
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f = mk_concat(se1, f);
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propagate_eq(lit, f, se2, true);
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propagate_eq(lit, mk_len(f), mk_len(se2), false);
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}
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else {
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propagate_not_prefix(e);
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@ -2823,6 +2824,7 @@ void theory_seq::assign_eh(bool_var v, bool is_true) {
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f = m_sk.mk_suffix_inv(se1, se2);
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f = mk_concat(f, se1);
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propagate_eq(lit, f, se2, true);
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propagate_eq(lit, mk_len(f), mk_len(se2), false);
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}
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else {
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propagate_not_suffix(e);
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@ -2842,6 +2844,7 @@ void theory_seq::assign_eh(bool_var v, bool is_true) {
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expr_ref f2 = m_sk.mk_indexof_right(se1, se2);
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f = mk_concat(f1, se2, f2);
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propagate_eq(lit, f, e1, true);
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propagate_eq(lit, mk_len(f), mk_len(e1), false);
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}
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else {
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propagate_non_empty(lit, se2);
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