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spot/tests/core/strength.test
Alexandre Duret-Lutz 62fb0c354e stength: fix detection of terminal automata 
Fixes issue #553.

* spot/twaalgos/strength.cc (is_type_automaton): Make sure an
accepting SCC is not followed by a rejecting one.
(is_terminal_automaton): Mark the third-argument version deprecated.
* spot/twaalgos/strength.hh: Adjust.
* spot/twaalgos/couvreurnew.cc: Remove the inappropriate terminal
optimization.
* bin/ltlfilt.cc, spot/tl/hierarchy.cc, spot/twaalgos/gfguarantee.cc,
tests/core/ikwiad.cc: Remove usage of the third argument of
is_terminal_automaton.
* tests/core/readsave.test, tests/core/strength.test: Adjust test
cases.
* NEWS: Mention the bug.
2023-11-22 17:28:02 +01:00

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#!/bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) by the Spot authors, see the AUTHORS file for details.
#
# This file is part of Spot, a model checking library.
#
# Spot is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# Spot is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
# License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
. ./defs
set -e
cat >in <<EOF
HOA: v1
name: "a U b"
States: 2
Start: 1
AP: 2 "a" "b"
Acceptance: 1 Inf(0)
--BODY--
State: 0 {0}
[t] 0
State: 1
[1] 0
[0&!1] 1
--END--
HOA: v1
States: 2
Start: 1
AP: 1 "a"
Acceptance: 1 Inf(0)
--BODY--
State: 0 {0}
[t] 1
State: 1
[0] 0 {0}
[!0] 1 {0}
--END--
HOA: v1
States: 2
Start: 1
AP: 1 "a"
Acceptance: 2 Inf(0)|Inf(1)
--BODY--
State: 0 {0}
[t] 1
State: 1
[0] 0 {1}
[!0] 1 {0}
--END--
HOA: v1
States: 2
Start: 1
Acceptance: 0 t
--BODY--
State: 0
[t] 1
State: 1
[t] 0
--END--
HOA: v1
States: 2
Start: 1
AP: 1 "a"
Acceptance: 1 Inf(0)
--BODY--
State: 0 {0}
[t] 1
State: 1
[!0] 1 {0}
--END--
/* The example from the TACAS'13 paper. */
HOA: v1
name: "(Gb | F!a) W c"
States: 5
Start: 1
AP: 3 "b" "a" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels trans-acc stutter-invariant
--BODY--
State: 0
[0] 0 {0}
State: 1
[0&1&!2] 0
[!1&!2] 1 {0}
[1&!2] 2
[2] 3
State: 2
[!1&!2] 1 {0}
[1&!2] 2
[!1&2] 3
[1&2] 4
State: 3
[t] 3 {0}
State: 4
[!1] 3
[1] 4
--END--
EOF
run 0 autfilt -H --check=strength in | tee out
cat >expected <<EOF
HOA: v1
name: "a U b"
States: 2
Start: 1
AP: 2 "a" "b"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc deterministic
properties: terminal very-weak
--BODY--
State: 0 {0}
[t] 0
State: 1
[1] 0
[0&!1] 1
--END--
HOA: v1
States: 2
Start: 1
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored complete
properties: deterministic terminal
--BODY--
State: 0 {0}
[t] 1
State: 1 {0}
[0] 0
[!0] 1
--END--
HOA: v1
States: 2
Start: 1
AP: 1 "a"
Acceptance: 2 Inf(0) | Inf(1)
properties: trans-labels explicit-labels trans-acc colored complete
properties: deterministic inherently-weak
--BODY--
State: 0
[t] 1 {0}
State: 1
[0] 0 {1}
[!0] 1 {0}
--END--
HOA: v1
States: 2
Start: 1
AP: 0
acc-name: all
Acceptance: 0 t
properties: trans-labels explicit-labels state-acc complete
properties: deterministic terminal
--BODY--
State: 0
[t] 1
State: 1
[t] 0
--END--
HOA: v1
States: 2
Start: 1
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored
properties: deterministic very-weak
--BODY--
State: 0 {0}
[t] 1
State: 1 {0}
[!0] 1
--END--
HOA: v1
name: "(Gb | F!a) W c"
States: 5
Start: 1
AP: 3 "b" "a" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels trans-acc stutter-invariant
--BODY--
State: 0
[0] 0 {0}
State: 1
[0&1&!2] 0
[!1&!2] 1 {0}
[1&!2] 2
[2] 3
State: 2
[!1&!2] 1 {0}
[1&!2] 2
[!1&2] 3
[1&2] 4
State: 3
[t] 3 {0}
State: 4
[!1] 3
[1] 4
--END--
EOF
diff out expected
run 0 autfilt -H --decompose-strength=t in | tee out.t
run 0 autfilt -H --decompose-strength=w in | tee out.w
run 0 autfilt -H --decompose-strength=s in | tee out.s
run 0 autfilt -H --decompose-strength=tw in | tee out.tw
run 0 autfilt -H --decompose-strength=ws in | tee out.ws
run 0 autfilt -H --decompose-strength=tws in | tee out.tws
echo '/******************************/' > sep
cat out.t sep out.w sep out.s sep out.tw sep out.ws sep out.tws > out
cat >expected <<EOF
HOA: v1
States: 2
Start: 0
AP: 2 "a" "b"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc deterministic
properties: terminal
--BODY--
State: 0
[1] 1
[0&!1] 0
State: 1 {0}
[t] 1
--END--
HOA: v1
States: 2
Start: 0
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored complete
properties: deterministic terminal
--BODY--
State: 0 {0}
[0] 1
[!0] 0
State: 1 {0}
[t] 0
--END--
HOA: v1
States: 2
Start: 0
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored complete
properties: deterministic terminal
--BODY--
State: 0 {0}
[0] 1
[!0] 0
State: 1 {0}
[t] 0
--END--
HOA: v1
States: 2
Start: 0
AP: 0
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored complete
properties: deterministic terminal
--BODY--
State: 0 {0}
[t] 1
State: 1 {0}
[t] 0
--END--
HOA: v1
States: 4
Start: 0
AP: 3 "b" "a" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc complete
properties: deterministic terminal
--BODY--
State: 0
[!1&!2] 0
[1&!2] 1
[2] 2
State: 1
[!1&!2] 0
[1&!2] 1
[!1&2] 2
[1&2] 3
State: 2 {0}
[t] 2
State: 3
[!1] 2
[1] 3
--END--
/******************************/
HOA: v1
States: 1
Start: 0
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored
properties: deterministic weak
--BODY--
State: 0 {0}
[!0] 0
--END--
HOA: v1
States: 3
Start: 0
AP: 3 "b" "a" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc weak
--BODY--
State: 0
[0&1&!2] 1
[!1&!2] 0
[1&!2] 2
State: 1 {0}
[0] 1
State: 2
[!1&!2] 0
[1&!2] 2
--END--
/******************************/
HOA: v1
States: 2
Start: 0
AP: 3 "b" "a" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels trans-acc deterministic
--BODY--
State: 0
[!1&!2] 0 {0}
[1&!2] 1
State: 1
[!1&!2] 0 {0}
[1&!2] 1
--END--
/******************************/
HOA: v1
States: 2
Start: 0
AP: 2 "a" "b"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc deterministic
properties: terminal
--BODY--
State: 0
[1] 1
[0&!1] 0
State: 1 {0}
[t] 1
--END--
HOA: v1
States: 2
Start: 0
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored complete
properties: deterministic terminal
--BODY--
State: 0 {0}
[0] 1
[!0] 0
State: 1 {0}
[t] 0
--END--
HOA: v1
States: 2
Start: 0
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored complete
properties: deterministic terminal
--BODY--
State: 0 {0}
[0] 1
[!0] 0
State: 1 {0}
[t] 0
--END--
HOA: v1
States: 2
Start: 0
AP: 0
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored complete
properties: deterministic terminal
--BODY--
State: 0 {0}
[t] 1
State: 1 {0}
[t] 0
--END--
HOA: v1
States: 1
Start: 0
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored
properties: deterministic weak
--BODY--
State: 0 {0}
[!0] 0
--END--
HOA: v1
States: 5
Start: 0
AP: 3 "b" "a" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc weak
--BODY--
State: 0
[0&1&!2] 1
[!1&!2] 0
[1&!2] 2
[2] 3
State: 1 {0}
[0] 1
State: 2
[!1&!2] 0
[1&!2] 2
[!1&2] 3
[1&2] 4
State: 3 {0}
[t] 3
State: 4
[!1] 3
[1] 4
--END--
/******************************/
HOA: v1
States: 1
Start: 0
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored
properties: deterministic weak
--BODY--
State: 0 {0}
[!0] 0
--END--
HOA: v1
States: 3
Start: 0
AP: 3 "b" "a" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels trans-acc
--BODY--
State: 0
[0&1&!2] 1
[!1&!2] 0 {0}
[1&!2] 2
State: 1
[0] 1 {0}
State: 2
[!1&!2] 0 {0}
[1&!2] 2
--END--
/******************************/
HOA: v1
States: 2
Start: 0
AP: 2 "a" "b"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc deterministic
properties: terminal
--BODY--
State: 0
[1] 1
[0&!1] 0
State: 1 {0}
[t] 1
--END--
HOA: v1
States: 2
Start: 0
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored complete
properties: deterministic terminal
--BODY--
State: 0 {0}
[0] 1
[!0] 0
State: 1 {0}
[t] 0
--END--
HOA: v1
States: 2
Start: 0
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored complete
properties: deterministic terminal
--BODY--
State: 0 {0}
[0] 1
[!0] 0
State: 1 {0}
[t] 0
--END--
HOA: v1
States: 2
Start: 0
AP: 0
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored complete
properties: deterministic terminal
--BODY--
State: 0 {0}
[t] 1
State: 1 {0}
[t] 0
--END--
HOA: v1
States: 1
Start: 0
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored
properties: deterministic weak
--BODY--
State: 0 {0}
[!0] 0
--END--
HOA: v1
States: 5
Start: 0
AP: 3 "b" "a" "c"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels trans-acc
--BODY--
State: 0
[0&1&!2] 1
[!1&!2] 0 {0}
[1&!2] 2
[2] 3
State: 1
[0] 1 {0}
State: 2
[!1&!2] 0 {0}
[1&!2] 2
[!1&2] 3
[1&2] 4
State: 3
[t] 3 {0}
State: 4
[!1] 3
[1] 4
--END--
EOF
diff out expected
autfilt -q expected
autfilt --is-very-weak in >out
cat >expected <<EOF
HOA: v1
name: "a U b"
States: 2
Start: 1
AP: 2 "a" "b"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc deterministic
properties: very-weak
--BODY--
State: 0 {0}
[t] 0
State: 1
[1] 0
[0&!1] 1
--END--
HOA: v1
States: 2
Start: 1
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels state-acc colored
properties: deterministic very-weak
--BODY--
State: 0 {0}
[t] 1
State: 1 {0}
[!0] 1
--END--
EOF
diff out expected
cat >input <<EOF
/* This Büchi automaton is not terminal, because of the
accepting edge between states 0 and 1. */
HOA: v1
States: 2
Start: 1
AP: 1 "a"
Acceptance: 1 Inf(0)
--BODY--
State: 0
[t] 0
State: 1
[0] 0 {0}
[!0] 1
--END--
/* This co-Büchi automaton not terminal for the same reason. */
HOA: v1
States: 2
Start: 1
AP: 1 "a"
Acceptance: 1 Fin(0)
--BODY--
State: 0
[t] 0
State: 1
[0] 0 {0}
[!0] 1
--END--
/* This co-Büchi automaton is terminal. */
HOA: v1
States: 2
Start: 1
AP: 1 "a"
Acceptance: 1 Fin(0)
--BODY--
State: 0
[t] 0
State: 1
[0] 0 {0}
[!0] 1 {0}
--END--
EOF
autfilt --check=strength input >output
cat >expected <<EOF
HOA: v1
States: 2
Start: 1
AP: 1 "a"
acc-name: Buchi
Acceptance: 1 Inf(0)
properties: trans-labels explicit-labels trans-acc complete
properties: deterministic terminal very-weak
--BODY--
State: 0
[t] 0
State: 1
[0] 0 {0}
[!0] 1
--END--
HOA: v1
States: 2
Start: 1
AP: 1 "a"
acc-name: co-Buchi
Acceptance: 1 Fin(0)
properties: trans-labels explicit-labels trans-acc complete
properties: deterministic very-weak
--BODY--
State: 0
[t] 0
State: 1
[0] 0 {0}
[!0] 1
--END--
HOA: v1
States: 2
Start: 1
AP: 1 "a"
acc-name: co-Buchi
Acceptance: 1 Fin(0)
properties: trans-labels explicit-labels state-acc complete
properties: deterministic terminal very-weak
--BODY--
State: 0
[t] 0
State: 1 {0}
[0] 0
[!0] 1
--END--
EOF
diff output expected
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