Version 5.1.1

Fixed KeYmaera X not displaying that an update is available

Version 5.1.0

Version 5.1.0 provides bug fixes and maintenance.

• Increased minimum supported Java version to 11 (tested up to 22)
• Improved automatic Mathematica path detection
• Fixed bug preventing KeYmaera X from running on Windows
• Fixed axiom derivation issues on startup
• Fixed incorrect syntax errors in webui text editor
• Removed -security CLI flag and webui SSL support

Version 5.0.2

Version 5.0.2 provides command line improvements and improved support for interpreted functions in monitoring.

• Command line options: Z3 path, KeYmaera X home directory
• Monitoring: support for interpreted symbols, improved Python exporter
• Definitions: predefined interpreted symbol tan
• UI: animate finished proof (auto-replay)

Version 5.0.1

Version 5.0.1 provides bug fixes and a tactic to prepare quantifier elimination queries.

• [Tactics] tactic prepareQE with heuristics for equality rewriting, introducing abbreviations, and forming the universal closure of a sequent
• [Tactics] tactic rcf to complete a query with an external tool
• [Tactics] tactic qe combines prepareQE and rcf.

Version 5.0

Version 5.0 provides a definition package for user-defined functions, major parser rewrite, keyboard shortcuts during proofs, tactic performance improvements, and tool improvements.

• Definitions: adds support for user-defined functions whose graphs can be implicitly characterized by dL formulas, such as the exponential and trigonometric functions, as solutions of differential equations. Properties of those user-defined functions can be proved using dL's differential equation reasoning principles. A high-level interface for defining functions and non-soundness-critical tactics automate low-level reasoning over implicit characterizations in hybrid system proofs. Builtin definitions that can be used out of the box in models include exp, sin, cos, Pi, and E.

• UI: keyboard shortcuts for common proof tasks (customizable through .keymaerax/hotkeys.js file in home directory)

• Parser: complete parser re-implementation with support for user-defined functions, full tactic support in web UI parsing

• Tactics: performance improvement with builtin forward tactics replacing (some) interpreted tactics

• Tools: command line conversion tools from KeYmaera X format to SMT-Lib format (-convert kyx2smt) and Wolfram format (-convert kyx2mat)

• Tools: improved Z3-based simplifier

Version 4.9.9

Version 4.9.9 provides UI bug fixes and some tactic performance improvements

• UI: get invariant generator (Pegasus) suggestions in dC dialog
• Docker container: Matlab support
• Tactics: bug fixes for definition expansion
• Tactics: faster forward implementation of several frequently used tactics
• Security update: log4j 2.17.1

Version 4.9.8

Version 4.9.8 provides a security patch and tactic implementation updates:

• Security patch: Log4j 2.15.0 (addresses CVE-2021-44228)
• Tactics: forward-style implementation of unification calculus tactics

Version 4.9.7

Version 4.9.7 provides support for switched systems, a fixpoint tactic for hybrid games, as well as UI and robustness improvements:

• Switched systems: hybrid automaton modeler
• Tactics: new stability and attractivity tactics for switched systems
• Tactics: new fixpoint tactic for hybrid games
• UI: tactic and model editor bug fixes
• UI: browse all tactics
• Code generator: export definitions

Version 4.9.6

Version 4.9.6 provides UI and robustness improvements.

• UI: tactic editor improvements, run tactics from editor gutter
• UI: save models while editing
• Code export: ModelPlex to Python
• Tactic: support for uninterpreted function symbols of arity>0 in QE
• Parser: improved error messages for program constants

Version 4.9.5

Version 4.9.5 provides improved interaction between tactics editing and sequent view.

• UI: selected tab gets highlighted in tactic editor, cursor position switches tabs
• UI: proof state displayed below tactic editor according to cursor position
• UI: formula icons ("eye") to configure positive-mention "using" by mouse
• UI: fast manual QE/CEX exploration with temporary formula hiding ("eye")
• Tactics: differential cut for constant quantities, e.g., dC("x^2+y^2=const()", 1)
• Docker container with KeYmaera X server