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add rule unfolding transformation

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2012-10-15 15:34:29 -07:00
parent 2c24f25050
commit d16db63e56
13 changed files with 160 additions and 138 deletions
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13
lib/pdr_dl_interface.cpp
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@ -30,6 +30,7 @@ Revision History:
#include "pdr_dl_interface.h"
#include "dl_rule_set.h"
#include "dl_mk_slice.h"
#include "dl_mk_unfold.h"
using namespace pdr;
@ -117,6 +118,17 @@ lbool dl_interface::query(expr * query) {
m_ctx.set_output_predicate(query_pred);
}
if (m_ctx.get_params().get_uint(":unfold-rules",0) > 0) {
unsigned num_unfolds = m_ctx.get_params().get_uint(":unfold-rules",0);
datalog::rule_transformer transformer(m_ctx);
datalog::mk_unfold* unfold = alloc(datalog::mk_unfold, m_ctx);
transformer.register_plugin(unfold);
while (num_unfolds > 0) {
m_ctx.transform_rules(transformer, mc, pc);
--num_unfolds;
}
}
IF_VERBOSE(2, m_ctx.display_rules(verbose_stream()););
m_pdr_rules.add_rules(m_ctx.get_rules());
m_pdr_rules.close();
@ -187,6 +199,7 @@ void dl_interface::collect_params(param_descrs& p) {
p.insert(":generate-proof-trace", CPK_BOOL, "PDR: (default false) trace for 'sat' answer as proof object");
p.insert(":inline-proofs", CPK_BOOL, "PDR: (default true) run PDR with proof mode turned on and extract Farkas coefficients directly (instead of creating a separate proof object when extracting coefficients)");
p.insert(":flexible-trace", CPK_BOOL, "PDR: (default false) allow PDR generate long counter-examples by extending candidate trace within search area");
p.insert(":unfold-rules", CPK_UINT, "PDR: (default 0) unfold rules statically using iterative squarring");
PRIVATE_PARAMS(p.insert(":use-farkas-model", CPK_BOOL, "PDR: (default false) enable using Farkas generalization through model propagation"););
PRIVATE_PARAMS(p.insert(":use-precondition-generalizer", CPK_BOOL, "PDR: (default false) enable generalizations from weakest pre-conditions"););
PRIVATE_PARAMS(p.insert(":use-multicore-generalizer", CPK_BOOL, "PDR: (default false) extract multiple cores for blocking states"););