Formal Specification

Prover Extractor®

For Automated Processing, Checking and Generation of Relay-Based Interlocking (RBI) System Schematics.

Prover Extractor

About Prover Extractor®

Given the signaling rules captured in a PiSPEC IP specification and the configuration of a specific interlocking, Prover iLock instantiates the requirements formalized by the PiSPEC IP for the scenarios and objects in the configured application.

Automate Relay-Based Interlocking (RBI) system schematics

Prover Extractor is a product for automated processing, checking and generation of Relay-Based Interlocking (RBI) system schematics.

A main feature of the product is to extract component and interconnection data from relay circuit schematic drawings. This enables checking design consistency and conformance to design guidelines, and to perform formal verification of Relay-Based Interlocking systems.

Software support

Prover Extractor supports Bentley Microstation and Autodesk AutoCAD. It has been used for checking some of the largest relay-based interlocking systems in operation today, maintained by Trafikverket in Sweden.

Benefits & Usage

Automated checking of design guidelines improves maintainability of RBI schematics
Computerized checks and generation improves quality and consistency for complex RBI systems
Automated generation of wiring, rack and cabling diagrams saves cost and time for RBI system assembly
Formal verification of safety requirements against RBI system improves quality and saves time and cost
Automated generation of component database and change management saves time and cost
Cross-check of RBI schematics against components database saves time and cost

Click to enlarge the screenshots

Extractor search in project

Find contacts and coils and navigate by following references. Show drawing errors.

Extractor cellconfig

View the meaning of drawing elements.

Extractor component

Extract component lists with detailed information.

Extractor connection

Extract wire lists.

Show changes between versions.


Prover’s innovative solution bring benefits to many types of Rail Control Projects.

Book A demo

Learn the possibilities with Prover – in action!

Book a 30 minute demo and learn about what benefits Prover products can bring to you and your organisation.

We’ll cover how to:

  • Specific Application Engineering with Prover iLock

  • Formal Verification with Prover iLock and Prover Certifier

Prefer speaking on the phone? Contact us on +46 (0)8 617 68 00.