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working on hitting sets

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-06-08 14:12:54 +01:00
commit 960e8ea1d5
38 changed files with 1130 additions and 203 deletions
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6
src/muz/base/dl_context.h
View file

@ -278,6 +278,12 @@ namespace datalog {
void register_variable(func_decl* var);
/*
Replace constants that have been registered as
variables by de-Bruijn indices and corresponding
universal (if is_forall is true) or existential
quantifier.
*/
expr_ref bind_variables(expr* fml, bool is_forall);
/**

1
src/muz/base/fixedpoint_params.pyg
View file

@ -77,6 +77,7 @@ def_module_params('fixedpoint',
('mbqi', BOOL, True, 'DUALITY: use model-based quantifier instantion'),
('batch_expand', BOOL, False, 'DUALITY: use batch expansion'),
('dump_aig', SYMBOL, '', 'Dump clauses in AIG text format (AAG) to the given file name'),
('conjecture_file', STRING, '', 'DUALITY: save conjectures to file'),
))

21
src/muz/duality/duality_dl_interface.cpp
View file

@ -35,6 +35,7 @@ Revision History:
#include "model_smt2_pp.h"
#include "model_v2_pp.h"
#include "fixedpoint_params.hpp"
#include "used_vars.h"
// template class symbol_table<family_id>;
@ -164,6 +165,20 @@ lbool dl_interface::query(::expr * query) {
clauses.push_back(e);
}
std::vector<sort> b_sorts;
std::vector<symbol> b_names;
used_vars uv;
uv.process(query);
unsigned nuv = uv.get_max_found_var_idx_plus_1();
for(int i = nuv-1; i >= 0; i--){ // var indices are backward
::sort * s = uv.get(i);
if(!s)
s = _d->ctx.m().mk_bool_sort(); // missing var, whatever
b_sorts.push_back(sort(_d->ctx,s));
b_names.push_back(symbol(_d->ctx,::symbol(i))); // names?
}
#if 0
// turn the query into a clause
expr q(_d->ctx,m_ctx.bind_variables(query,false));
@ -177,6 +192,9 @@ lbool dl_interface::query(::expr * query) {
}
q = q.arg(0);
}
#else
expr q(_d->ctx,query);
#endif
expr qc = implies(q,_d->ctx.bool_val(false));
qc = _d->ctx.make_quant(Forall,b_sorts,b_names,qc);
@ -211,6 +229,7 @@ lbool dl_interface::query(::expr * query) {
rs->SetOption("use_underapprox",m_ctx.get_params().use_underapprox() ? "1" : "0");
rs->SetOption("stratified_inlining",m_ctx.get_params().stratified_inlining() ? "1" : "0");
rs->SetOption("batch_expand",m_ctx.get_params().batch_expand() ? "1" : "0");
rs->SetOption("conjecture_file",m_ctx.get_params().conjecture_file());
unsigned rb = m_ctx.get_params().recursion_bound();
if(rb != UINT_MAX){
std::ostringstream os; os << rb;
@ -350,7 +369,9 @@ void dl_interface::display_certificate_non_const(std::ostream& out) {
if(_d->status == StatusModel){
ast_manager &m = m_ctx.get_manager();
model_ref md = get_model();
out << "(fixedpoint \n";
model_smt2_pp(out, m, *md.get(), 0);
out << ")\n";
}
else if(_d->status == StatusRefutation){
out << "(derivation\n";

1
src/muz/transforms/dl_mk_coi_filter.cpp
View file

@ -205,7 +205,6 @@ namespace datalog {
for (unsigned i = 0; i < rules.size(); ++i) {
app* head = rules[i]->get_head();
expr_ref_vector conj(m);
unsigned n = head->get_num_args()-1;
for (unsigned j = 0; j < head->get_num_args(); ++j) {
expr* arg = head->get_arg(j);
if (!is_var(arg)) {