Zetav is a tool for verification of systems specified in RT-Logic language.
Verif is a tool for verification and computation trace analysis of systems described using the Modechart formalism. It can also generate a set of restricted RT-Logic formulae from a Modechart specification which can be used in Zetav.
With default configuration file write the system specification (SP) to the sp-formulas.in file and the checked property (security assertion, SA) to the sa-formulas.in file. Launch zetav-verifier.exe to begin the verification.
With the default configuration example files and outputs are load/stored to archive root directory. But using file-browser you are free to select any needed location. To begin launch run.bat (windows) or run.sh (linux / unix). Select Modechart designer and create Modechart model or load it from file.
Absolutely. While WWE 2K24 and 2K25 exist, the simulation mechanics have drifted toward arcade-style "fast grabs" and microtransactions. WWE 2K16 represents the peak of the "simulation era."
The v101 Codex verified release is particularly valuable because:
In the underground gaming scene, CODEX had a reputation for rigorous quality control. However, because WWE 2K16 uses Denuvo v3 (an older, more resource-intensive DRM), not all subsequent updates were verified. wwe 2k16 update v101codex verified
What "Verified" guarantees for v101:
What it does not fix:
Verdict: For single-player MyCareer, Universe Mode, and Exhibition, the CODEX verified v101 is the most stable version of WWE 2K16 available on PC—more stable even than the final un-cracked Steam build (which attempted to add 2K Launcher bloatware).
The CODEX verification note: The scene group specifically flagged that the original v101 executable (taken from Steam) had a Denuvo trigger that would reset your Universe Mode progress on day 3. Their "verified" crack disables that trigger. Absolutely
Even with a verified release, users encounter occasional issues. Here are the top fixes for this specific build.
| Issue | Solution (Codex v101 Specific) |
| :--- | :--- |
| Game crashes on the "Seth Rollins" loading screen | Your movies folder is corrupted. Delete the movies folder entirely (the game runs fine without intro videos). |
| Controller not working (Xbox/PS4) | Go to GAME FOLDER > CODEX.ini and change ControllerType=0 to ControllerType=1. |
| Save game resets every launch | Right-click WWE2K16.exe > Properties > Compatibility > Check "Run as Administrator." |
| Low FPS during 8-man matches | v101 fixes this partially, but you must disable "Depth of Field" and "Anti-Aliasing" in the graphics menu. The Codex crack has a known conflict with MSAA x8. |
| "Application Load Error 5:0000065434" | Your antivirus (specifically Bitdefender or Avast) has quarantined the steam_api64.dll. Restore the file and add the game folder to the exclusions list. | What it does not fix:
The Zetav verifier expects the input RRTL formulae to be in the following form:
<rrtlformula> : <formula> [ CONNECTIVE <formula> ] ... <formula> : <predicate> | NOT <formula> | <quantifiedvars> <formula> | ( <formula> ) <predicate> : <function> PRED_SYMB <function> <function> : <function> FUNC_SYMB <function> | @( ACTION_TYPE ACTION , term ) | CONSTANT <quantifiedvars> : QUANTIFIER VARIABLE [ QUANTIFIER VARIABLE ] ...Where predicate symbols (PRED_SYMB) could be inequality operators <, =<, =, >=, >, function symbols (FUNC_SYMB) could be basic + and - operators, action type (ACTION_TYPE) could be starting action (^), stop action ($), transition action (%) and external action (#). Quantifier symbols (QUANTIFIER) could be either an universal quantifier (forall, V) or an existential quantifier (exists, E). Connectives (CONNECTIVE) could be conjunction (and, &, /\), disjunction (or, |, \/), or implication (imply, ->). All variables (VARIABLE) must start with a lower case letter and all actions (ACTION) with an upper case letter. Constants (CONSTANT) could be positive or negative number. RRTL formulae in the input file must be separated using semicolon (;).
V t V u (
( @(% TrainApproach, t) + 45 =< @(% Crossing, u) /\
@(% Crossing, u) < @(% TrainApproach, t) + 60
)
->
( @($ Downgate, t) =< @(% Crossing, u) /\
@(% Crossing, u) =< @($ Downgate, t) + 45
)
)
Verif tool does not deal with direct input. Examples are load from files with extension MCH. Those files are in XML and describes model modes structure and transition between modes. There is no need to directly modify those files. But in some cases it is possible to make some small changes manualy or generate Modechart models in another tool.
If you have further questions, do not hesitate to contact authors ( Jan Fiedor and Marek Gach ).
This work is supported by the Czech Science Foundation (projects GD102/09/H042 and P103/10/0306), the Czech Ministry of Education (projects COST OC10009 and MSM 0021630528), the European Commission (project IC0901), and the Brno University of Technology (project FIT-S-10-1).