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spot/tests/python/highlighting.ipynb
Alexandre Duret-Lutz f6575d2ec5 improve cleanup_parity() and colorize_parity() 
Fixes #384.

* spot/twaalgos/parity.cc: Here.
* tests/core/parity2.test, tests/python/highlighting.ipynb,
tests/python/parity.py: Adjust test cases.
* tests/python/parity.ipynb: Improve the presentation.
* NEWS: Mention the change.
2019-06-11 21:24:55 +02:00

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"import spot\n",
"spot.setup()\n",
"from IPython.display import display"
]
},
{
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"source": [
"This notebook shows you different ways in which states or transitions can be highlighted in Spot. \n",
"\n",
"It should be noted that highlighting works using some special [named properties](https://spot.lrde.epita.fr/concepts.html#named-properties): basically, two maps that are attached to the automaton, and associated state or edge numbers to color numbers. This named properties are fragile: they will be lost if the automaton is transformed into a new automaton, and they can become meaningless of the automaton is modified in place (e.g., if the transitions or states are reordered).\n",
"\n",
"Nonetheless, highlighting is OK to use right before displaying or printing the automaton. The `dot` and `hoa` printer both know how to represent highlighted states and transitions.\n",
"\n",
"# Manual highlighting"
]
},
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"source": [
"a = spot.translate('a U b U c')"
]
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"The `#` option of `print_dot()` can be used to display the internal number of each transition "
]
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],
"source": [
"a.highlight_edge(6, 2).highlight_states((0, 1), 0)"
]
},
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"metadata": {},
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"The plural version can take a list or tuple of state numbers (as above) or of Booleans (as below). In the latter case the indices of the True values give the states to highlight."
]
},
{
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"a.highlight_states([False, True, True], 5)"
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"# Saving to HOA 1.1\n",
"\n",
"When saving to HOA format, the highlighting is only output if version 1.1 of the format is selected, because the headers `spot.highlight.edges` and `spot.highlight.states` contain dots, which are disallowed in version 1. Compare these two outputs:"
]
},
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"execution_count": 7,
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{
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"text": [
"HOA: v1\n",
"States: 3\n",
"Start: 2\n",
"AP: 3 \"a\" \"b\" \"c\"\n",
"acc-name: Buchi\n",
"Acceptance: 1 Inf(0)\n",
"properties: trans-labels explicit-labels state-acc deterministic\n",
"properties: stutter-invariant terminal\n",
"--BODY--\n",
"State: 0 {0}\n",
"[t] 0\n",
"State: 1\n",
"[2] 0\n",
"[1&!2] 1\n",
"State: 2\n",
"[2] 0\n",
"[!0&1&!2] 1\n",
"[0&!2] 2\n",
"--END--\n",
"\n",
"HOA: v1.1\n",
"States: 3\n",
"Start: 2\n",
"AP: 3 \"a\" \"b\" \"c\"\n",
"acc-name: Buchi\n",
"Acceptance: 1 Inf(0)\n",
"properties: trans-labels explicit-labels state-acc !complete\n",
"properties: deterministic stutter-invariant terminal\n",
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"--BODY--\n",
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"[t] 0\n",
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"[2] 0\n",
"[1&!2] 1\n",
"State: 2\n",
"[2] 0\n",
"[!0&1&!2] 1\n",
"[0&!2] 2\n",
"--END--\n"
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}
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"print(a.to_str('HOA', '1'))\n",
"print()\n",
"print(a.to_str('HOA', '1.1'))"
]
},
{
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"# Highlighting a run\n",
"\n",
"One use of this highlighting is to highlight a run in an automaton.\n",
"\n",
"The following few command generate an automaton, then an accepting run on this automaton, and highlight that accepting run on the automaton. Note that a run knows the automaton from which it was generated, so calling `highlight()` will directly decorate that automaton."
]
},
{
"cell_type": "code",
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"Prefix:\n",
" 4\n",
" | 1\n",
" 0\n",
" | !a & !b\n",
"Cycle:\n",
" 1\n",
" | !b\t{0}\n",
"\n"
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"r = b.accepting_run(); print(r)"
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"r.highlight(5) # the parameter is a color number"
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"The call of `highlight(5)` on the accepting run `r` modified the original automaton `b`:"
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"# Highlighting an accepting run in an automaton with arbitrary acceptance\n",
"\n",
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"def show_accrun(string):\n",
" aut = spot.automaton(string)\n",
" run = aut.accepting_run()\n",
" run.highlight(5)\n",
" display(aut)\n",
"\n",
"show_accrun(\"\"\"\n",
"HOA: v1 States: 10 Start: 0 AP: 2 \"a\" \"b\" Acceptance: 5 (Inf(1) | (Fin(0)\n",
"& Inf(4)) | Fin(2)) & Fin(3) properties: trans-labels explicit-labels\n",
"trans-acc --BODY-- State: 0 [0&1] 9 {3} [!0&!1] 0 {3} [0&!1] 5 {0 1} State:\n",
"1 [0&!1] 9 {4} [0&1] 8 {3} State: 2 [!0&!1] 8 {0} [!0&1] 6 {2 4} [0&1]\n",
"2 {3} [!0&1] 7 State: 3 [0&!1] 2 {0 4} [!0&!1] 3 {1 3} [!0&1] 4 {0} State: 4\n",
"[0&!1] 5 {2} [0&1] 0 [!0&1] 1 {0} State: 5 [!0&!1] 0 {3} [!0&!1] 6 {3} State: 6\n",
"[0&1] 3 {2} [!0&1] 1 [0&1] 2 {0 1 3 4} State: 7 [0&1] 1 [!0&1] 7 {0 2}\n",
"State: 8 [!0&1] 7 [!0&!1] 9 {0} State: 9 [0&1] 8 {3} [0&!1] 5 [0&!1]\n",
"1 --END--\n",
"\"\"\")\n",
"show_accrun(\"\"\"\n",
"HOA: v1 States: 10 Start: 0 AP: 2 \"a\" \"b\" Acceptance: 6 Fin(5) &\n",
"((Fin(1) & (Inf(3) | Inf(4))) | Fin(0) | Fin(2)) properties: trans-labels\n",
"explicit-labels trans-acc --BODY-- State: 0 [0&1] 8 {0} [0&!1] 6 {2}\n",
"State: 1 [!0&1] 9 {0 4 5} State: 2 [!0&1] 1 State: 3 [0&!1] 3 {2}\n",
"[0&1] 4 {3 5} State: 4 [0&1] 7 {5} [0&!1] 9 {2} [!0&1] 0 {0 2} State:\n",
"5 [!0&1] 1 [!0&1] 3 {2 3} State: 6 [0&!1] 8 {1 2 5} [!0&1] 7 {3} State:\n",
"7 [0&1] 2 {0} [!0&1] 5 State: 8 [0&!1] 3 {4 5} State: 9 [!0&1] 3 {1 2}\n",
"[0&1] 1 {4} [0&!1] 5 {2} --END--\"\"\")\n",
"show_accrun(\"\"\"\n",
"HOA: v1 States: 4 properties: implicit-labels trans-labels no-univ-branch\n",
"deterministic complete tool: \"ltl2dstar\" \"0.5.4\" name: \"i G F a G F b\"\n",
"comment: \"Union{Safra[NBA=2],Safra[NBA=2]}\" acc-name: Rabin 2 Acceptance:\n",
"4 (Fin(0)&Inf(1))|(Fin(2)&Inf(3)) Start: 0 AP: 2 \"a\" \"b\" --BODY-- State:\n",
"0 {0} 1 0 3 2 State: 1 {1} 1 0 3 2 State: 2 {0 3} 1 0 3 2 State: 3 {1 3}\n",
"1 0 3 2 --END--\n",
"\"\"\")"
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"source": [
"# Highlighting from a product\n",
"\n",
"Pretty often, accepting runs are found in a product but we want to display them on one of the original automata. This can be done by projecting the runs on those automata before displaying them."
]
},
{
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"\n"
]
}
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"run = prod.accepting_run(); print(run)"
]
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{
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"metadata": {},
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"source": [
"run.highlight(5)\n",
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"The projection also works for products generated on-the-fly, but the on-the-fly product itself cannot be highlighted (it does not store states or transitions). "
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},
{
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"Prefix:\n",
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"source": [
"left2 = spot.translate('!b & FG a')\n",
"right2 = spot.translate('XXXb')\n",
"prod2 = spot.otf_product(left2, right2) # Note \"otf_product()\"\n",
"run2 = prod2.accepting_run()\n",
"run2.project(left2).highlight(5)\n",
"run2.project(right2, True).highlight(5)\n",
"print(run2)\n",
"display(prod2, left2, right2)"
]
},
{
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"metadata": {},
"source": [
"# Highlighting nondeterminism\n",
"\n",
"Sometimes its is hard to locate non-deterministic states inside a large automaton. Here are two functions that can help for that."
]
},
{
"cell_type": "code",
"execution_count": 19,
"metadata": {},
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"source": [
"b = spot.translate('X (F(Ga <-> b) & GF!b)')\n",
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"source": [
"# Disappearing highlights\n",
"\n",
"As explained at the top of this notebook, named properties (such as highlights) are fragile, and you should not really on them being preserved across algorithms. In-place algorithm are probably the worst, because they might modify the automaton and ignore the attached named properties. \n",
"\n",
"`randomize()` is one such in-place algorithm: it reorder states or transitions of the automaton. By doing so it renumber the states and edges, and that process would completely invalidate the highlights information. Fortunately `randomize()` know about highlights: it will preserve highlighted states, but it will drop all highlighted edges."
]
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"source": [
"# Highlighting with partial output\n",
"\n",
"For simplicity, rendering of partial automata is actually implemented by copying the original automaton and marking some states as \"incomplete\". This also allows the same display code to work with automata generated on-the-fly. However since there is a copy, propagating the highlighting information requires extra work. Let's make sure it has been done:"
]
},
{
"cell_type": "code",
"execution_count": 21,
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"# Highlighting languages\n",
"\n",
"For deterministic automata, the function `spot.highlight_languages()` can be used to highlight states that recognize the same language. This can be a great help in reading automata. States with a colored border share their language, and states with a black border all have a language different from all other states."
]
},
{
"cell_type": "code",
"execution_count": 22,
"metadata": {},
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],
"text/plain": [
"<IPython.core.display.SVG object>"
]
},
"execution_count": 22,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"aut = spot.translate('(b W Xa) & GF(c <-> Xb) | a', 'generic', 'det')\n",
"spot.highlight_languages(aut)\n",
"aut.show('.bas')"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.6.4"
}
},
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}
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