Iteration final - SOLVER_EXECUTION
Sequence: 8
Timestamp: 2025-07-27 21:40:57

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

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 2.159234046936035,
    "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 6 rows, 3 columns and 6 nonzeros\nModel fingerprint: 0x14649ffa\nVariable types: 0 continuous, 3 integer (3 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [9e+00, 1e+01]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [2e+00, 2e+03]\nFound heuristic solution: objective 27.2000000\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: 27.2 \n\nOptimal solution found (tolerance 1.00e-04)\nBest objective 2.720000000000e+01, best bound 2.720000000000e+01, gap 0.0000%\nOptimal value: 27.2\nSwimmer 1 assigned to Event 101\nSwimmer 2 assigned to Event 102\nSwimmer 3 assigned to Event 103\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 27.2,
    "error_message": null,
    "decision_variables": {}
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 10.7764892578125,
    "return_code": 0,
    "stdout": "Optimal value: 27.2\nx[1,101] = 1.000\nx[2,102] = 1.000\nx[3,103] = 1.000\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 27.2,
    "error_message": null,
    "decision_variables": {}
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 3.881012439727783,
    "return_code": 1,
    "stdout": "",
    "stderr": "Traceback (most recent call last):\n  File \"/tmp/tmpbum3cou0.py\", line 91, in <module>\n    swimming_optimization()\n  File \"/tmp/tmpbum3cou0.py\", line 29, in swimming_optimization\n    assert all((i, j) in performance_scores for i in swimmers for j in events), \"Performance scores missing for some swimmer-event pairs\"\nAssertionError: Performance scores missing for some swimmer-event pairs\n",
    "status": "error",
    "optimal_value": null,
    "error_message": "Traceback (most recent call last):\n  File \"/tmp/tmpbum3cou0.py\", line 91, in <module>\n    swimming_optimization()\n  File \"/tmp/tmpbum3cou0.py\", line 29, in swimming_optimization\n    assert all((i, j) in performance_scores for i in swimmers for j in events), \"Performance scores missing for some swimmer-event pairs\"\nAssertionError: Performance scores missing for some swimmer-event pairs\n",
    "decision_variables": {}
  }
}
