Commit 29e08a1a authored by Alexandre Duret-Lutz's avatar Alexandre Duret-Lutz

introduce count_univbranch_states() and count_univbranch_edges()

Fixes #368, suggested by František Blahoudek.

* spot/twaalgos/isdet.cc, spot/twaalgos/isdet.hh
(count_univbranch_states(), count_univbranch_edges()): New functions.
* bin/common_aoutput.cc, bin/common_aoutput.hh: Add %u and variants.
* NEWS: Mention these.
* tests/core/alternating.test: Test them.
parent 60296317
......@@ -18,6 +18,11 @@ New in spot 2.6.3.dev (not yet released)
- ltlfilt learned --liveness to match formulas representing liveness
properties.
- the --stats= option of tools producing automata learned how to
tell if an automaton uses universal branching (%u), or more
precisely how many states (%[s]u) or edges (%[e]u) use universal
branching.
Python:
- spot.translate() and spot.postprocess() now take an xargs=
......@@ -75,6 +80,10 @@ New in spot 2.6.3.dev (not yet released)
used to check whether a formula or an automaton represents a
liveness property.
- Two new functions count_univbranch_states() and
count_univbranch_edges() can help measuring the amount of
universal branching in alternating automata.
Bugs fixed:
- The pair of acc_cond::mark_t returned by
......
......@@ -218,6 +218,10 @@ static const argp_option io_options[] =
"1 if the automaton is complete, 0 otherwise", 0 },
{ "%r", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE,
"wall-clock time elapsed in seconds (excluding parsing)", 0 },
{ "%U, %u, %[LETTER]U, %[LETTER]u", 0, nullptr,
OPTION_DOC | OPTION_NO_USAGE,
"1 if the automaton contains some universal branching "
"(or a number of [s]tates or [e]dges with universal branching)", 0 },
{ "%W, %w", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE,
"one word accepted by the automaton", 0 },
{ "%X, %x, %[LETTERS]X, %[LETTERS]x", 0, nullptr,
......@@ -272,6 +276,11 @@ static const argp_option o_options[] =
"or (c) children processes.", 0 },
{ "%n", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE,
"number of nondeterministic states in output", 0 },
{ "%u, %[LETTER]u", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE,
"1 if the automaton contains some universal branching "
"(or a number of [s]tates or [e]dges with universal branching)", 0 },
{ "%u, %[e]u", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE,
"number of states (or [e]dges) with universal branching", 0 },
{ "%d", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE,
"1 if the output is deterministic, 0 otherwise", 0 },
{ "%p", 0, nullptr, OPTION_DOC | OPTION_NO_USAGE,
......@@ -393,6 +402,7 @@ hoa_stat_printer::hoa_stat_printer(std::ostream& os, const char* format,
declare('P', &haut_complete_);
declare('S', &haut_states_);
declare('T', &haut_trans_);
declare('U', &haut_univbranch_);
declare('W', &haut_word_);
declare('X', &haut_ap_);
}
......@@ -406,6 +416,7 @@ hoa_stat_printer::hoa_stat_printer(std::ostream& os, const char* format,
declare('f', &filename_); // Override the formula printer.
declare('h', &output_aut_);
declare('m', &aut_name_);
declare('u', &aut_univbranch_);
declare('w', &aut_word_);
declare('x', &aut_ap_);
}
......@@ -478,6 +489,8 @@ hoa_stat_printer::print(const spot::const_parsed_aut_ptr& haut,
// This is more efficient than calling count_nondet_state().
haut_deterministic_ = is_deterministic(haut->aut);
}
if (has('U'))
haut_univbranch_ = haut->aut;
if (has('P'))
haut_complete_ = is_complete(haut->aut);
......@@ -509,6 +522,8 @@ hoa_stat_printer::print(const spot::const_parsed_aut_ptr& haut,
else
aut_name_.val().clear();
}
if (has('u'))
aut_univbranch_ = aut;
if (has('w'))
{
if (auto word = aut->accepting_word())
......@@ -532,6 +547,8 @@ hoa_stat_printer::print(const spot::const_parsed_aut_ptr& haut,
output_aut_ = nullptr;
input_aut_ = nullptr;
haut_scc_.reset();
aut_univbranch_ = nullptr;
haut_univbranch_ = nullptr;
aut_ap_.clear();
haut_ap_.clear();
return res;
......@@ -661,6 +678,26 @@ namespace
}
}
void printable_univbranch::print(std::ostream& os, const char* pos) const
{
std::string options = "l";
if (pos[0] == '[' && pos[1] != ']')
{
if (pos[1] == 'e' && pos[2] == ']')
{
os << spot::count_univbranch_edges(val_);
return;
}
else if (pos[1] == 's' && pos[2] == ']')
{
os << spot::count_univbranch_states(val_);
return;
}
percent_error(pos, pos + 1);
}
os << (spot::count_univbranch_edges(val_) ? 1 : 0);
}
void printable_timer::print(std::ostream& os, const char* pos) const
{
double res = 0;
......
// -*- coding: utf-8 -*-
// Copyright (C) 2014-2017 Laboratoire de Recherche et Développement
// Copyright (C) 2014-2018 Laboratoire de Recherche et Développement
// de l'Epita (LRDE).
//
// This file is part of Spot, a model checking library.
......@@ -74,6 +74,14 @@ struct printable_automaton final:
void print(std::ostream& os, const char* pos) const override;
};
struct printable_univbranch final:
public spot::printable_value<spot::const_twa_graph_ptr>
{
using spot::printable_value<spot::const_twa_graph_ptr>::operator=;
void print(std::ostream& os, const char* pos) const override;
};
struct printable_timer final: public spot::printable
{
protected:
......@@ -169,6 +177,8 @@ private:
spot::printable_value<unsigned> haut_complete_;
spot::printable_value<const char*> csv_prefix_;
spot::printable_value<const char*> csv_suffix_;
printable_univbranch haut_univbranch_;
printable_univbranch aut_univbranch_;
printable_timer timer_;
printable_automaton input_aut_;
printable_automaton output_aut_;
......
......@@ -310,4 +310,33 @@ namespace spot
check_semi_determism(aut, true);
}
unsigned
count_univbranch_states(const const_twa_graph_ptr& aut)
{
if (aut->is_existential())
return 0;
unsigned res = 0;
unsigned ns = aut->num_states();
for (unsigned s = 0; s < ns; ++s)
for (auto& e: aut->out(s))
if (aut->is_univ_dest(e))
{
++res;
break;
}
return res;
}
unsigned
count_univbranch_edges(const const_twa_graph_ptr& aut)
{
if (aut->is_existential())
return 0;
unsigned res = aut->is_univ_dest(aut->get_init_state_number());
for (auto& e: aut->edges())
if (aut->is_univ_dest(e))
++res;
return res;
}
}
// -*- coding: utf-8 -*-
// Copyright (C) 2012, 2013, 2014, 2015, 2016, 2017 Laboratoire de Recherche
// et Développement de l'Epita (LRDE).
// Copyright (C) 2012-2018 Laboratoire de Recherche et Développement
// de l'Epita (LRDE).
//
// This file is part of Spot, a model checking library.
//
......@@ -109,4 +109,33 @@ namespace spot
/// \brief Set the deterministic and semi-deterministic properties
/// appropriately.
SPOT_API void check_determinism(twa_graph_ptr aut);
// \brief Count states with some universal branching.
//
// This counts the number of states that have edges going to several
// destinations at once (as reported by aut->is_univ_dest(...)).
//
// Note that nondeterministic automata (which include deterministic
// automata) have 0 such state, but additionally they also have
// "singleton" initial state (which this function does not check).
//
// \see count_univbranch_edges()
SPOT_API unsigned
count_univbranch_states(const const_twa_graph_ptr& aut);
// \brief Count edges with universal branching.
//
// This counts the number of edges going to several destination at
// once (as reported by aut->is_univ_dest(...)).
//
// If the automaton starts in multiple initial states at once, this
// is considered as a universal "initial edge", and adds one to the
// total count.
//
// Nondeterministic automata (which include deterministic automata)
// have 0 edges with universal branching.
//
// \see count_univbranch_states()
SPOT_API unsigned
count_univbranch_edges(const const_twa_graph_ptr& aut);
}
......@@ -53,6 +53,8 @@ State: 6 "t"
--END--
EOF
test "1 2 4" = "`autfilt --stats='%u %[s]u %[e]u' alt.hoa`"
autfilt --has-univ-branch --has-exist-branch --dot=bans alt.hoa >alt.dot
cat >expect.dot <<EOF
......@@ -986,4 +988,9 @@ State: 2 {0}
[t] 2&1
--END--
EOF
test '2 0 1 1 1' = "`autfilt --stats='%[iw]c %[W]c %[c]c %[C]c %[t]c' in`"
stats='%[iw]c_%[W]c_%[c]c_%[C]c_%[t]c_%U_%[e]U_%[s]U'
test '2_0_1_1_1_1_3_3' = "`autfilt --stats=$stats in`"
autfilt --stats='%[x]U' in 2>stderr && exit2
grep '%\[x\]U' stderr
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