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add get-interpolant command

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-01-19 12:12:04 -06:00
parent d3b105f9f8
commit 9179deb746
5 changed files with 127 additions and 32 deletions
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44
src/cmd_context/basic_cmds.cpp
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@ -31,6 +31,8 @@ Notes:
#include "cmd_context/cmd_util.h"
#include "cmd_context/simplify_cmd.h"
#include "cmd_context/eval_cmd.h"
#include "qe/qe_mbp.h"
#include "qe/qe_mbi.h"
class help_cmd : public cmd {
svector<symbol> m_cmds;
@ -849,6 +851,47 @@ public:
void finalize(cmd_context & ctx) override {}
};
class get_interpolant_cmd : public cmd {
expr* m_a;
expr* m_b;
public:
get_interpolant_cmd():cmd("get-interpolant") {}
char const * get_usage() const override { return "<expr> <expr>"; }
char const * get_descr(cmd_context & ctx) const override { return "perform model based interpolation"; }
unsigned get_arity() const override { return 2; }
cmd_arg_kind next_arg_kind(cmd_context& ctx) const override {
return CPK_EXPR;
}
void set_next_arg(cmd_context& ctx, expr * arg) override {
if (m_a == nullptr)
m_a = arg;
else
m_b = arg;
}
void prepare(cmd_context & ctx) override { m_a = nullptr; m_b = nullptr; }
void execute(cmd_context & ctx) override {
ast_manager& m = ctx.m();
qe::interpolator mbi(m);
expr_ref a(m_a, m);
expr_ref b(m_b, m);
expr_ref itp(m);
solver_factory& sf = ctx.get_solver_factory();
params_ref p;
solver_ref sA = sf(m, p, false /* no proofs */, true, true, symbol::null);
solver_ref sB = sf(m, p, false /* no proofs */, true, true, symbol::null);
solver_ref sNotA = sf(m, p, false /* no proofs */, true, true, symbol::null);
sA->assert_expr(a);
sB->assert_expr(b);
qe::uflia_mbi pA(sA.get(), sNotA.get());
qe::prop_mbi_plugin pB(sB.get());
pA.set_shared(a, b);
pB.set_shared(a, b);
lbool res = mbi.pogo(pA, pB, itp);
ctx.regular_stream() << res << " " << itp << "\n";
}
};
// provides "help" for builtin cmds
class builtin_cmd : public cmd {
char const * m_usage;
@ -898,6 +941,7 @@ void install_ext_basic_cmds(cmd_context & ctx) {
ctx.insert(alloc(echo_cmd));
ctx.insert(alloc(labels_cmd));
ctx.insert(alloc(declare_map_cmd));
ctx.insert(alloc(get_interpolant_cmd));
ctx.insert(alloc(builtin_cmd, "reset", nullptr, "reset the shell (all declarations and assertions will be erased)"));
install_simplify_cmd(ctx);
install_eval_cmd(ctx);