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add consequence command

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-07-30 12:59:29 -07:00
parent 7346098895
commit 7562efbe84
3 changed files with 63 additions and 0 deletions
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37
src/cmd_context/basic_cmds.cpp
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@ -753,6 +753,42 @@ public:
}
};
class get_consequences_cmd : public cmd {
ptr_vector<expr> m_assumptions;
ptr_vector<expr> m_variables;
unsigned m_count;
public:
get_consequences_cmd(): cmd("get-consequences"), m_count(0) {}
virtual char const * get_usage() const { return "(<boolean-variable>*) (<variable>*)"; }
virtual char const * get_descr(cmd_context & ctx) const { return "retrieve consequences that fix values for supplied variables"; }
virtual unsigned get_arity() const { return 2; }
virtual cmd_arg_kind next_arg_kind(cmd_context & ctx) const { return CPK_EXPR_LIST; }
virtual void set_next_arg(cmd_context & ctx, unsigned num, expr * const * tlist) {
if (m_count == 0) {
m_assumptions.append(num, tlist);
++m_count;
}
else {
m_variables.append(num, tlist);
}
}
virtual void failure_cleanup(cmd_context & ctx) {}
virtual void execute(cmd_context & ctx) {
ast_manager& m = ctx.m();
expr_ref_vector assumptions(m), variables(m), consequences(m);
assumptions.append(m_assumptions.size(), m_assumptions.c_ptr());
variables.append(m_variables.size(), m_variables.c_ptr());
ctx.get_consequences(assumptions, variables, consequences);
ctx.regular_stream() << consequences << "\n";
}
virtual void prepare(cmd_context & ctx) { reset(ctx); }
virtual void reset(cmd_context& ctx) {
m_assumptions.reset(); m_variables.reset(); m_count = 0;
}
virtual void finalize(cmd_context & ctx) {}
};
// provides "help" for builtin cmds
class builtin_cmd : public cmd {
char const * m_usage;
@ -776,6 +812,7 @@ void install_basic_cmds(cmd_context & ctx) {
ctx.insert(alloc(get_option_cmd));
ctx.insert(alloc(get_info_cmd));
ctx.insert(alloc(set_info_cmd));
ctx.insert(alloc(get_consequences_cmd));
ctx.insert(alloc(builtin_cmd, "assert", "<term>", "assert term."));
ctx.insert(alloc(builtin_cmd, "check-sat", "<boolean-constants>*", "check if the current context is satisfiable. If a list of boolean constants B is provided, then check if the current context is consistent with assigning every constant in B to true."));
ctx.insert(alloc(builtin_cmd, "push", "<number>?", "push 1 (or <number>) scopes."));