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add re.plus length enumeration; fix reordering warning

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This commit is contained in:
Murphy Berzish 2018-04-06 11:39:08 -04:00
parent 6a3ce301b7
commit 45f48123e7
1 changed files with 9 additions and 20 deletions
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29
src/smt/theory_str.cpp
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@ -54,12 +54,12 @@ namespace smt {
m_unused_id(0),
m_delayed_axiom_setup_terms(m),
m_delayed_assertions_todo(m),
m_persisted_axioms(m),
m_persisted_axiom_todo(m),
tmpStringVarCount(0),
tmpXorVarCount(0),
tmpLenTestVarCount(0),
tmpValTestVarCount(0),
m_persisted_axioms(m),
m_persisted_axiom_todo(m),
avoidLoopCut(true),
loopDetected(false),
m_theoryStrOverlapAssumption_term(m),
@ -6865,7 +6865,7 @@ namespace smt {
finalResult.push_back(r2);
expr_ref retval(mk_and(finalResult), m);
return retval;
} else if (u.re.is_star(re, sub1)) {
} else if (u.re.is_star(re, sub1) || u.re.is_plus(re, sub1)) {
// stars are generated as a linear combination of all possible subterm lengths;
// this requires that there are no stars under this one
/*
@ -6898,27 +6898,16 @@ namespace smt {
expr * n = mk_int_var("rstar");
freeVariables.push_back(n);
expr_ref term(m_autil.mk_mul(m_autil.mk_numeral(lenOption, true), n), m);
sum_terms.push_back(term);
expr_ref term2(term, m);
if (u.re.is_plus(re)) {
// n effectively starts at 1
term2 = m_autil.mk_add(m_autil.mk_numeral(lenOption, true), term);
}
sum_terms.push_back(term2);
}
expr_ref retval(ctx.mk_eq_atom(lenVar, m_autil.mk_add_simplify(sum_terms)), m);
return retval;
}
} else if (u.re.is_plus(re, sub1)) {
/*
expr * v = mk_int_var("rlen");
expr * n = mk_int_var("rstar");
freeVariables.push_back(v);
freeVariables.push_back(n);
expr_ref rsub = infer_all_regex_lengths(v, sub1, freeVariables);
expr_ref_vector finalResult(m);
finalResult.push_back(rsub);
finalResult.push_back(ctx.mk_eq_atom(lenVar, m_autil.mk_mul(v, n)));
finalResult.push_back(m_autil.mk_ge(n, m_autil.mk_numeral(rational::one(), true)));
expr_ref retval(mk_and(finalResult), m);
return retval;
*/
// TODO this should really be done as a sub-case of star
NOT_IMPLEMENTED_YET();
} else if (u.re.is_range(re, sub1, sub2)) {
SASSERT(u.str.is_string(sub1));
SASSERT(u.str.is_string(sub2));