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Model Description

The model is a simulation of an Alarm Clock. A null pointer exception exists in the model.

Classes: 6

SLOC: 125

Parameters: (selector)

Summary Results Table

alarmClock (4)
Tool Trials (successful) Time Transition (paths) Max Depth (error depth)
JPF “Randomized DFS” 100 (100) 1.00 0.84s 148.30 (0.00) 71.02 (62.84)
JPF Stateless Random Walk 10179 (849) 0.08 NA NA (NA) NA (NA)
CHESS 1 (1) 1.00 0.33s 352.00 (3.00) 72.00 (NA)
alarmClock (9)
Tool Trials (successful) Time Transition (paths) Max Depth (error depth)
JPF “Randomized DFS” 100 (100) 1.00 0.80s 152.12 (0.00) 71.05 (61.97)
JPF Stateless Random Walk 10123 (942) 0.09 NA NA (NA) NA (NA)

Java PathFinder

Stateless Random Walk

  • 10,000 Trials of Random Walk
  • The ratio of the error discovery trials over the total number of trials is the path error density.
Parameters Path Error Density
4 0.083
9 0.084
  • 100 randomized depth-first search trial, where each trial is time-bounded at

one hour. A total of 100 computation hours dedicated in discovering the error.

  • 2 MB of RAM allocated on each machine
  • The Error Discovering Trials is the number of trials that discovered an error

among the initially launched trials (100).

Parameters Trials (successful) Time Transition (paths) Max Depth (error depth) abs time (ms) rel. time (ms) search depth errorDepth new states revisited states end states backtracks processed states restored states total memory (kB) max total memory free memory (kB) heap objects max heap objects
(4) 100 (100) 100.00% 0.84s 148.30 (0.00) 71.02 (62.84) 841.21 841.21 71.02 62.84 110.53 37.77 0.94 84.46 45.76 0.00 14474.24 6990528.00 0.00 164.27 164.27
(9) 100 (100) 100.00% 0.80s 152.12 (0.00) 71.05 (61.97) 802.61 802.61 71.05 61.97 111.65 40.47 0.86 89.15 47.82 0.00 13974.40 6990528.00 0.00 164.66 164.66
vv-lab/alarmclock.txt · Last modified: 2015/02/18 22:53 by egm
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