PRISM
=====
Version: 4.5.dev
Date: Sat Mar 14 23:46:32 UTC 2020
Hostname: e72bdd194fc5
Memory limits: cudd=4g, java(heap)=11g
Command line: prism -javamaxmem 11g -cuddmaxmem 4g -heuristic speed -e 1e-6 -maxiters 1000000 wlan.4.prism wlan.props --property sent -const COL=0
Parsing model file "wlan.4.prism"...
Type: MDP
Modules: medium station1 station2
Variables: col c1 c2 x1 s1 slot1 backoff1 bc1 x2 s2 slot2 backoff2 bc2
Parsing properties file "wlan.props"...
7 properties:
(1) "collisions": Pmax=? [ F col=COL ]
(2) "cost_max": R{"cost"}max=? [ F s1=12&s2=12 ]
(3) "cost_min": R{"cost"}min=? [ F s1=12&s2=12 ]
(4) "num_collisions": R{"collisions"}max=? [ F s1=12&s2=12 ]
(5) "sent": P>=1 [ F s1=12&s2=12 ]
(6) "time_max": R{"time"}max=? [ F s1=12&s2=12 ]
(7) "time_min": R{"time"}min=? [ F s1=12&s2=12 ]
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Model checking: "sent": P>=1 [ F s1=12&s2=12 ]
Model constants: COL=0
Warning: Switching to sparse engine and (backwards) Gauss Seidel (default for heuristic=speed).
Building model...
Model constants: COL=0
Computing reachable states...
Reachability (BFS): 145 iterations in 0.43 seconds (average 0.002966, setup 0.00)
Time for model construction: 0.446 seconds.
Type: MDP
States: 345000 (1 initial)
Transitions: 762252
Choices: 440206
Transition matrix: 14365 nodes (6 terminal), 762252 minterms, vars: 43r/43c/7nd
Probability bound in formula is 0/1 so not computing exact probabilities...
Prob0E: 854 iterations in 8.93 seconds (average 0.010454, setup 0.00)
Prob1A: 1 iterations in 0.00 seconds (average 0.002000, setup 0.00)
yes = 345000, no = 0, maybe = 0
Property satisfied in 1 of 1 initial states.
Time for model checking: 8.954 seconds.
Result: true (property satisfied in the initial state)
Overall running time: 10.048 seconds.
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Note: There was 1 warning during computation.