instances/golomb_n5__v1_nh.json

{
  "name": "golomb_n5__v1_nh",
  "problem_type": "golomb",
  "params": {
    "n": 5
  },
  "prompt": "Find a Golomb ruler with 5 marks. A Golomb ruler is a set of 5 integers (marks) such that all pairwise distances between marks are unique. The first mark should be at position 0.\n\nReturn a list of 5 integers in increasing order representing the mark positions, or state \"UNSATISFIABLE\" if no solution exists.",
  "satisfiable": true,
  "solution": {
    "x": [
      0,
      1,
      4,
      9,
      11
    ]
  },
  "difficulty": {
    "solve_time_ms": 1258.9,
    "search_space": 11881376,
    "num_variables": 5,
    "num_constraints": 5,
    "num_edges": -1,
    "backend": "pycsp",
    "solve_tier": "hard",
    "solve_pct_global": 80.64,
    "solve_pct_type": 8.33
  },
  "partial_assignment": null
}