{
  "schema": "apeiron-ap1-r2c-p42-bounded-method-diagnostic-v1.1",
  "updated_utc": "2026-09-02T09:59:10Z",
  "classification": "P42_NONPASS_DIAGNOSTIC_IMPROVED_SCALARS_ONLY",
  "source": "validated_41_PASS_only",
  "target_nodes": 42,
  "frozen_thresholds": {
    "dae_max_abs_scaled_residual": 0.0001,
    "max_abs_friedmann_residual": 0.000001,
    "ward_normalized": 0.000002,
    "validation_source_relative_change": 0.0001,
    "validation_wronskian_relative_error": 1e-11
  },
  "method": {
    "lift": "endpoint_preserving_degree_2_3_bspline_extrapolation",
    "lift_beta": 2.5,
    "rho_chi_partial_projection_alpha": 0.0000125,
    "first_frozen_lobatto_sigma_alpha": 0.000003,
    "first_frozen_lobatto_sigma_dot_alpha": 0.000002,
    "first_frozen_lobatto_theta_dot_alpha": 0.000006,
    "second_recomputed_lobatto_sigma_dot_alpha": 0.000001,
    "second_recomputed_lobatto_theta_dot_alpha": 0.000003,
    "algebraic_chi2_projection": "full_residual_verified",
    "equations_changed": false,
    "physics_changed": false,
    "gates_changed": false
  },
  "repeated_full_diagnostics": {
    "repeats": 3,
    "dae_max_abs_scaled_residual": 0.00025836112519572583,
    "max_abs_friedmann_residual": 1.5127661435732624e-16,
    "ward_normalized": 2.1794407870617619e-7,
    "validation_source_relative_change": 2.056727924509347e-5,
    "validation_wronskian_relative_error": 1.42e-49,
    "junction_block": 2.327570421458129e-5,
    "finite": true,
    "positive_H": true,
    "min_H": 8.312595082091879e-8,
    "min_PX": 1.8132335484729594,
    "min_K": 3.016188545394498,
    "gate_pass": {
      "dae_residual": false,
      "max_abs_friedmann_residual": true,
      "ward_normalized": true,
      "validation_source_relative_change": true,
      "validation_wronskian_relative_error": true,
      "structural": true
    }
  },
  "excluded_families_summary": {
    "additional_cross_grids_and_trust_regions": 8,
    "valid_parent_sparse_lifts": 2,
    "alternative_p41_full_pass_branch_tested": true,
    "smooth_minimax_material_improvement": false,
    "stronger_defect_source_closure_cliff": true
  },
  "prior_p42_dae_max_abs_scaled_residual": 0.00044107284402342004,
  "previous_diagnostic_dae_max_abs_scaled_residual": 0.0002981570089038665,
  "diagnostic_reduction_factor": 0.5857561368752219,
  "reduction_factor_vs_previous_diagnostic": 0.8665270896886014,
  "accepted_as_checkpoint": false,
  "trial_vector_stored_or_used_as_seed": false,
  "highest_validated_p_level": 41,
  "production_curves_released": false,
  "next_action": "continue_conservative_DAE_p_method_extension_from_stored_41_PASS_only"
}