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initial sls experiment

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-03-19 15:39:11 -07:00
parent 78975827b2
commit 3b3498c4b5
7 changed files with 295 additions and 107 deletions
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20
src/tactic/arith/elim01_tactic.cpp
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@ -24,6 +24,7 @@ Notes:
#include"arith_decl_plugin.h"
#include"elim01_tactic.h"
#include"model_smt2_pp.h"
#include"th_rewriter.h"
class bool2int_model_converter : public model_converter {
ast_manager& m;
@ -120,6 +121,7 @@ public:
typedef obj_hashtable<expr> expr_set;
ast_manager & m;
arith_util a;
th_rewriter m_rewriter;
params_ref m_params;
unsigned m_max_hi_default;
rational m_max_hi;
@ -127,6 +129,7 @@ public:
elim01_tactic(ast_manager & _m, params_ref const & p):
m(_m),
a(m),
m_rewriter(m),
m_max_hi_default(8),
m_max_hi(rational(m_max_hi_default)) {
}
@ -177,12 +180,13 @@ public:
}
}
expr_ref new_curr(m);
expr_ref new_curr(m), tmp_curr(m);
proof_ref new_pr(m);
for (unsigned i = 0; i < g->size(); i++) {
expr * curr = g->form(i);
sub(curr, new_curr);
sub(curr, tmp_curr);
m_rewriter(tmp_curr, new_curr);
g->update(i, new_curr, new_pr, g->dep(i));
}
for (unsigned i = 0; i < axioms.size(); ++i) {
@ -219,12 +223,18 @@ public:
ites.push_back(m.mk_ite(xs.back(), a.mk_numeral(rational(1 << sh), true), zero));
++sh;
}
if (ites.size() == 1) {
switch (ites.size()) {
case 0:
sum = zero;
break;
case 1:
sum = ites[0].get();
}
else {
break;
default:
sum = a.mk_add(ites.size(), (expr*const*)ites.c_ptr());
break;
}
TRACE("pb", tout << mk_pp(x, m) << " " << sum << " max: " << max_value << "\n";);
sub.insert(x, sum);
b2i->insert(x->get_decl(), xfs.size(), xfs.c_ptr());