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Chair for Foundations of Software Reliability and Theoretical Computer Science
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A Tool to for Probability Calculus

With this tool you can check statements that are common in introductory courses on probability theory, e.g. that pairwise independence does not imply mutual independence.
It checks satisfiability of formulae involving statements over probabilities.
Click here to try the tool!

FPsolve -- a generic solver for polynomial fixpoint equations

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GPU-based Parity Game Solver

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The Rabinizer tool generates small deterministic Rabin automata from LTL formulae.
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A Tool for Modal Transition Systems

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An Advanced Solver for Presburger Arithmetic

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Moped is a model checker for pushdown systems. See the official web page for more information.

To quickly get started using Moped, download Docker and follow this link to get the image.

jMoped 2.0

jMoped is a test environment for Java programs written as an Eclipse plug-in.

Given a Java method, jMoped can simulate the execution of the program for all possible arguments within a finite range and generate coverage information for these executions. Moreover, it checks for some common Java errors, i.e. assertion violations, null pointer exceptions, and array bound violations. When an error is found, jMoped finds out the arguments that lead to the error. A JUnit test case can also be automatically generated for further testing.

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HSF(C): A Software Verifier based on Horn Clauses

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A Conversion Game Extension for JFLAP

A game, based on JFLAP, lets you play with conversions between various representations of regular and ω-regular languages.

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Workflow Analyzer

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Simpol - A Simulator for Population Protocols

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Population protocols are a model of distributed computation by a collection (or population) of anonymous agents. Agents interact with one another to carry out computations according to transition functions. For background information of the tool, see the paper by Aspnes and Ruppert.

The simulator requires a configuration file. The file, written in JavaScript and JSON, should at least define states and rules between pairs of states. Download a minimal example to see the syntax, or the following more flexible examples:

The simulator supports 3 modes. Depending on the mode, a step simulates one of the following actions:

  • Sequential: Randomly pick a pair of states with an applicable rule, and apply the rule.
  • Sequential Timed: Randomly pick a pair of states regardless of rules, and apply a rule is possible.
  • Parallel: Randomly pick all pairs of states, and apply rules to all applicable pairs.
Clicking run triggers a series of steps until no applicable pairs are available.