The statesOfInterest variables was wrongly not reset to 'reach'.
Not usually caught because the statesOfInterest optimisation is
currently used in very few places. The attached bugfix test shows
an example of where it does go wrong.
When converting an MTBDD to an integer vector (as is done to prepare the storage for the computed strategy for Pmax-Until using the sparse engine), the MTBDD has to be zero for non-reachable states, as that could lead to out-of-bounds writes to the array during conversion.
This commit adds the required restriction to reach in prism.NondetModelChecker.
+ test case
+ fixes deref of 'yes' during initialization
Some of the result values for the test cases were floating-point approximations,
which results in 'close but inaccurate' errors when running the test cases against
the exact engine.
We replace those results either with the exact values or mark the approximated
results with ~... (mostly for a few CTMC properties, where the exact results
are a bit unwieldly).
During model exploration of a CTMC, when using fast adaptive uniformisation,
only the last part of an update (rate & successor state) is used, as the
indexing of the outgoing transitions is buggy.
We now store all outgoing transitions and handle the case of multiple
choices/enabled commands in the CTMC.
+ two test cases
The action object attached to a transition can be null (internal action), leading to a null pointer
exception when trying to call the toString method.
+ test case
Previously, a transition reward with [] would match the self loop
transition added for fixing deadlocks in the explicit engine.
Fixes#29 and adds test case.
Dave Parker