Iteration final - SOLVER_EXECUTION
Sequence: 6
Timestamp: 2025-07-27 22:19:49

Prompt:
Generated solver codes with templates and executed them with retry logic

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 0.17711663246154785,
    "return_code": 0,
    "stdout": "Restricted license - for non-production use only - expires 2026-11-23\nGurobi Optimizer version 12.0.2 build v12.0.2rc0 (linux64 - \"Red Hat Enterprise Linux 9.4 (Plow)\")\n\nCPU model: AMD EPYC 7513 32-Core Processor, instruction set [SSE2|AVX|AVX2]\nThread count: 64 physical cores, 128 logical processors, using up to 32 threads\n\nOptimize a model with 9 rows, 9 columns and 9 nonzeros\nModel fingerprint: 0x44d30dd2\nVariable types: 0 continuous, 9 integer (9 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [5e-01, 1e+00]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [1e+00, 1e+00]\nFound heuristic solution: objective 2.5000000\n\nExplored 0 nodes (0 simplex iterations) in 0.00 seconds (0.00 work units)\nThread count was 1 (of 128 available processors)\n\nSolution count 1: 2.5 \n\nOptimal solution found (tolerance 1.00e-04)\nBest objective 2.500000000000e+00, best bound 2.500000000000e+00, gap 0.0000%\nOptimal value: 2.5\nStudent 1 assigned to Dorm 101\nStudent 2 assigned to Dorm 102\nStudent 3 assigned to Dorm 103\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 2.5,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 4
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 2.970043659210205,
    "return_code": 1,
    "stdout": "",
    "stderr": "Traceback (most recent call last):\n  File \"/tmp/tmpyoit21nv.py\", line 63, in <module>\n    dorm_assignment_optimization()\n  File \"/tmp/tmpyoit21nv.py\", line 25, in dorm_assignment_optimization\n    assert all((i, j) in coefficients for i in students for j in dorms), \"Coefficient data missing\"\nAssertionError: Coefficient data missing\n",
    "status": "error",
    "optimal_value": null,
    "error_message": "Traceback (most recent call last):\n  File \"/tmp/tmpyoit21nv.py\", line 63, in <module>\n    dorm_assignment_optimization()\n  File \"/tmp/tmpyoit21nv.py\", line 25, in dorm_assignment_optimization\n    assert all((i, j) in coefficients for i in students for j in dorms), \"Coefficient data missing\"\nAssertionError: Coefficient data missing\n",
    "decision_variables": {},
    "retry_attempt": 4
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 1.250730037689209,
    "return_code": 1,
    "stdout": "",
    "stderr": "Traceback (most recent call last):\n  File \"/tmp/tmpqjhn52qr.py\", line 83, in <module>\n    dorm_assignment_optimization()\n  File \"/tmp/tmpqjhn52qr.py\", line 20, in dorm_assignment_optimization\n    assert all((i, j) in coefficients for i in students for j in dorms), \"Coefficient data missing\"\nAssertionError: Coefficient data missing\n",
    "status": "error",
    "optimal_value": null,
    "error_message": "Traceback (most recent call last):\n  File \"/tmp/tmpqjhn52qr.py\", line 83, in <module>\n    dorm_assignment_optimization()\n  File \"/tmp/tmpqjhn52qr.py\", line 20, in dorm_assignment_optimization\n    assert all((i, j) in coefficients for i in students for j in dorms), \"Coefficient data missing\"\nAssertionError: Coefficient data missing\n",
    "decision_variables": {},
    "retry_attempt": 4
  }
}
