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Revert "refactor theory_str::check_length_concat_var"

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This reverts commit 170e2b4e2a.
This commit is contained in:
Murphy Berzish 2016-12-01 15:19:50 -05:00
parent 170e2b4e2a
commit 10c0d94cf2
1 changed files with 2 additions and 18 deletions
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20
src/smt/theory_str.cpp
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@ -5652,15 +5652,7 @@ bool theory_str::check_length_concat_var(expr * concat, expr * var) {
} else {
rational sumLen(0);
ptr_vector<expr> args;
/*
* Refactor from the Z3str2 version.
* Only generate new terms if a conflict is actually detected.
*/
expr_ref_vector eq_args(mgr);
vector<rational> eq_lens;
expr_ref_vector items(mgr);
get_nodes_in_concat(concat, args);
for (unsigned int i = 0; i < args.size(); ++i) {
expr * oneArg = args[i];
@ -5668,19 +5660,11 @@ bool theory_str::check_length_concat_var(expr * concat, expr * var) {
bool argLen_exists = get_len_value(oneArg, argLen);
if (argLen_exists) {
if (!m_strutil.is_string(oneArg) && !argLen.is_zero()) {
// items.push_back(ctx.mk_eq_atom(mk_strlen(oneArg), mk_int(argLen)));
eq_args.push_back(oneArg);
eq_lens.push_back(rational(argLen));
items.push_back(ctx.mk_eq_atom(mk_strlen(oneArg), mk_int(argLen)));
}
sumLen += argLen;
if (sumLen > varLen) {
TRACE("t_str_detail", tout << "inconsistent length detected in concat <==> var" << std::endl;);
expr_ref_vector items(mgr);
for (unsigned int z = 0; z < eq_args.size(); ++z) {
expr * arg = eq_args.get(z);
rational len = eq_lens.get(z);
items.push_back(ctx.mk_eq_atom(mk_strlen(arg), mk_int(len)));
}
items.push_back(ctx.mk_eq_atom(mk_strlen(var), mk_int(varLen)));
items.push_back(ctx.mk_eq_atom(concat, var));
expr_ref toAssert(mgr.mk_not(mk_and(items)), mgr);