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import stormpy
import stormpy.logic
from helpers.helper import get_example_path
import math
import math
class TestBisimulation:
def test_bisimulation(self):
program = stormpy.parse_prism_program(get_example_path("dtmc", "crowds5_5.pm"))
assert program.nr_modules == 1
assert program.model_type == stormpy.PrismModelType.DTMC
prop = "P=? [F \"observe0Greater1\"]"
properties = stormpy.parse_properties_for_prism_program(prop, program)
model = stormpy.build_model(program, properties)
assert model.nr_states == 7403
assert model.nr_transitions == 13041
assert model.model_type == stormpy.ModelType.DTMC
assert not model.supports_parameters
initial_state = model.initial_states[0]
assert initial_state == 0
result = stormpy.model_checking(model, properties[0])
model_bisim = stormpy.perform_bisimulation(model, properties, stormpy.BisimulationType.STRONG)
assert model_bisim.nr_states == 64
assert model_bisim.nr_transitions == 104
assert model_bisim.model_type == stormpy.ModelType.DTMC
assert not model_bisim.supports_parameters
result_bisim = stormpy.model_checking(model_bisim, properties[0])
initial_state_bisim = model_bisim.initial_states[0]
assert initial_state_bisim == 34
assert math.isclose(result.at(initial_state), result_bisim.at(initial_state_bisim), rel_tol=1e-4)
def test_parametric_bisimulation(self):
program = stormpy.parse_prism_program(get_example_path("pdtmc", "brp16_2.pm"))
assert program.nr_modules == 5
assert program.model_type == stormpy.PrismModelType.DTMC
assert program.has_undefined_constants
prop = "P=? [F s=5]"
properties = stormpy.parse_properties_for_prism_program(prop, program)
model = stormpy.build_parametric_model(program, properties)
assert model.nr_states == 613
assert model.nr_transitions == 803
assert model.model_type == stormpy.ModelType.DTMC
assert model.has_parameters
initial_state = model.initial_states[0]
assert initial_state == 0
result = stormpy.model_checking(model, properties[0])
ratFunc = result.at(initial_state)
model_bisim = stormpy.perform_bisimulation(model, properties, stormpy.BisimulationType.STRONG)
assert model_bisim.nr_states == 324
assert model_bisim.nr_transitions == 452
assert model_bisim.model_type == stormpy.ModelType.DTMC
assert model_bisim.has_parameters
result_bisim = stormpy.model_checking(model_bisim, properties[0])
initial_state_bisim = model_bisim.initial_states[0]
assert initial_state_bisim == 316
ratFunc_bisim = result_bisim.at(initial_state_bisim)
assert ratFunc == ratFunc_bisim