mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-23 17:15:31 +00:00
Code Activity

deal with subtraction that manages to sneak in. Issue #996

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-05-01 15:22:06 -07:00
parent aceee3fac8
commit d14f2af5ae
8 changed files with 84 additions and 47 deletions
Download patch file Download diff file Expand all files Collapse all files

18
src/test/cnf_backbones.cpp
View file

@ -152,14 +152,13 @@ static void brute_force_consequences(sat::solver& s, sat::literal_vector const&
static lbool core_chunking(sat::solver& s, sat::bool_var_vector& vars, sat::literal_vector const& asms, vector<sat::literal_vector>& conseq, unsigned K) {
lbool r = s.check(asms.size(), asms.c_ptr());
display_status(r);
if (r != l_true) {
return r;
}
sat::model const & m = s.get_model();
sat::literal_vector lambda, backbones;
for (unsigned i = 1; i < m.size(); i++) {
lambda.push_back(sat::literal(i, m[i] == l_false));
for (unsigned i = 0; i < vars.size(); i++) {
lambda.push_back(sat::literal(vars[i], m[vars[i]] == l_false));
}
while (!lambda.empty()) {
IF_VERBOSE(1, verbose_stream() << "(sat-backbone-core " << lambda.size() << " " << backbones.size() << ")\n";);
@ -270,10 +269,15 @@ static void cnf_backbones(bool use_chunk, char const* file_name) {
}
void tst_cnf_backbones(char ** argv, int argc, int& i) {
bool use_chunk = i + 1 < argc && argv[i + 1] == std::string("chunk");
if (use_chunk) ++i;
char const* file = "";
if (i + 1 < argc) {
bool use_chunk = (i + 2 < argc && argv[i + 1] == std::string("chunk"));
if (use_chunk) ++i;
cnf_backbones(use_chunk, argv[i + 1]);
++i;
file = argv[i + 1];
}
else {
file = argv[1];
}
cnf_backbones(use_chunk, file);
++i;
}