Return code: 0
Duration: 185.9s

=== STDOUT ===
🚀 Running coder
📦 Dynamic packages: clingo
🤖 Creating agent with model: anthropic/claude-sonnet-4.5
🤖 Using model: anthropic/claude-sonnet-4.5
  python_exec: print("Task plan created. Starting implementation....
  python_exec: import clingo
  python_exec: defining function solve_tower_of_hanoi()
  python_exec: defining function solve_debug()
  python_exec: defining function solve_fixed()
  python_exec: defining function solve_complete()
  python_exec: import clingo
  python_exec: defining function create_final_solution()
  python_exec: defining function verify_solution()
  python_exec: defining function solve_tower_of_hanoi()
  save_code: {'code': 'import clingo\nimpor...
  python_exec: executing file 026_tower_of_hanoi_hard_task_code.py
  report_issue: {'text': 'Task completed succe...

Perfect! I have successfully completed the Tower of Hanoi puzzle task. Here's a 
summary:                                                                        


                                Solution Summary                                

Task: Solve a 4-disk, 4-peg Tower of Hanoi puzzle with the "pilgrim's journey"  
constraint - every disk must visit both intermediate pegs B and C during its    
journey from A to D.                                                            

Approach: Used Answer Set Programming (ASP) with the clingo Python API to model 
and solve the problem.                                                          

Key Features:                                                                   

 1 Sequential Planning Pattern: Exactly one move per timestep (avoiding the     
   common mistake of allowing multiple simultaneous moves)                      
 2 State Exclusivity: Enforced that each disk can only be on one peg at a time  
 3 Frame Axioms: Modeled state persistence correctly                            
 4 Precondition Constraints: Prevented invalid moves (larger disk on smaller    
   disk)                                                                        
 5 Pilgrim's Journey: Tracked visited pegs and enforced that all disks visit    
   both B and C                                                                 

Result:                                                                         

 • ✓ Found optimal solution with exactly 19 moves as expected                   
 • ✓ All disks successfully transferred from peg A to peg D                     
 • ✓ All disks visited both intermediate pegs B and C                           
 • ✓ Solution verified and outputs correct JSON format                          
 • ✓ Executes in well under 10 seconds                                          

The solution has been saved to 026_tower_of_hanoi_hard_task_code.py and is ready
for use.                                                                        

==================================================
📊 Execution Statistics
==================================================

🔧 Tool Usage:
  python_exec           11 calls
  report_issue           1 calls
  save_code              1 calls

💬 Token Consumption:
  Input tokens:        274,011
  Output tokens:       10,756
  Total tokens:        284,767

⏱️  Execution time: 3m 4.9s
==================================================


=== STDERR ===
2025-10-11 19:05:30,108 - coder.kernel - WARNING - Existing kernel is dead, will restart
