format_version: "0.1"
id: g_comb_and
name: "comb and (graphical LD twin)"
domain: manufacturing
language: LD-graphical
source:
  origin: authored
  reference: "Graphical PLCopen XML twin of the K-LD textual benchmark (syntax-coverage pair)"
  license: CC-BY-4.0
properties_file: props.yaml
safety_intent: "The output must be energised only when all three series contacts are closed."
validation_status: validated
syntax_pair_of: ld_comb_and
variants:
  - file: program.xml
    expected_verdict: true
    ground_truth:
      method: expert
features: [contacts, coils]
difficulty: easy
tags: [feature, semantics, syntax-pair]