Iteration final - SOLVER_EXECUTION
Sequence: 6
Timestamp: 2025-07-27 22:33:03

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

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 0.29746007919311523,
    "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 3 rows, 3 columns and 3 nonzeros\nModel fingerprint: 0x70cd1488\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [1e+02, 1e+02]\n  Bounds range     [0e+00, 0e+00]\n  RHS range        [2e+00, 2e+00]\nPresolve removed 3 rows and 3 columns\nPresolve time: 0.00s\nPresolve: All rows and columns removed\nIteration    Objective       Primal Inf.    Dual Inf.      Time\n       0    6.8750000e+02   0.000000e+00   0.000000e+00      0s\n\nSolved in 0 iterations and 0.00 seconds (0.00 work units)\nOptimal objective  6.875000000e+02\nOptimal value: 687.5\nDelay factor at station 101: 2.100\nDelay factor at station 102: 1.700\nDelay factor at station 103: 1.700\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 687.5,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 4
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 4.513983249664307,
    "return_code": 0,
    "stdout": "Optimal value: 655.4\nDelay factor at station 101: 1.950\nDelay factor at station 102: 1.550\nDelay factor at station 103: 1.760\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 655.4,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 4
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 2.003054141998291,
    "return_code": 1,
    "stdout": "ERROR: Rule failed when generating expression for Objective objective with\nindex None: ValueError: Error retrieving immutable Param value\n(adjusted_travel_time[(1, 102)]):\n            The Param value is undefined and no default value is specified.\nERROR: Constructing component 'objective' from data=None failed:\n        ValueError: Error retrieving immutable Param value\n        (adjusted_travel_time[(1, 102)]):\n    \tThe Param value is undefined and no default value is specified.\n",
    "stderr": "Traceback (most recent call last):\n  File \"/tmp/tmpx93uphbk.py\", line 80, in <module>\n    train_scheduling_optimization()\n  File \"/tmp/tmpx93uphbk.py\", line 48, in train_scheduling_optimization\n    model.objective = pyo.Objective(rule=obj_rule, sense=pyo.minimize)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/block.py\", line 571, in __setattr__\n    self.add_component(name, val)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/block.py\", line 1101, in add_component\n    val.construct(data)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/objective.py\", line 336, in construct\n    ans = self._setitem_when_not_present(index, rule(block, index))\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/initializer.py\", line 485, in __call__\n    return self._fcn(parent)\n  File \"/tmp/tmpx93uphbk.py\", line 47, in obj_rule\n    return sum(model.adjusted_travel_time[t, s] * model.d[s] for t in model.T for s in model.S)\n  File \"/tmp/tmpx93uphbk.py\", line 47, in <genexpr>\n    return sum(model.adjusted_travel_time[t, s] * model.d[s] for t in model.T for s in model.S)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/param.py\", line 1012, in __getitem__\n    return super().__getitem__(args)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/indexed_component.py\", line 662, in __getitem__\n    return self._getitem_when_not_present(index)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/param.py\", line 627, in _getitem_when_not_present\n    raise ValueError(\nValueError: Error retrieving immutable Param value (adjusted_travel_time[(1, 102)]):\n\tThe Param value is undefined and no default value is specified.\n",
    "status": "error",
    "optimal_value": null,
    "error_message": "Traceback (most recent call last):\n  File \"/tmp/tmpx93uphbk.py\", line 80, in <module>\n    train_scheduling_optimization()\n  File \"/tmp/tmpx93uphbk.py\", line 48, in train_scheduling_optimization\n    model.objective = pyo.Objective(rule=obj_rule, sense=pyo.minimize)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/block.py\", line 571, in __setattr__\n    self.add_component(name, val)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/block.py\", line 1101, in add_component\n    val.construct(data)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/objective.py\", line 336, in construct\n    ans = self._setitem_when_not_present(index, rule(block, index))\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/initializer.py\", line 485, in __call__\n    return self._fcn(parent)\n  File \"/tmp/tmpx93uphbk.py\", line 47, in obj_rule\n    return sum(model.adjusted_travel_time[t, s] * model.d[s] for t in model.T for s in model.S)\n  File \"/tmp/tmpx93uphbk.py\", line 47, in <genexpr>\n    return sum(model.adjusted_travel_time[t, s] * model.d[s] for t in model.T for s in model.S)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/param.py\", line 1012, in __getitem__\n    return super().__getitem__(args)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/indexed_component.py\", line 662, in __getitem__\n    return self._getitem_when_not_present(index)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/param.py\", line 627, in _getitem_when_not_present\n    raise ValueError(\nValueError: Error retrieving immutable Param value (adjusted_travel_time[(1, 102)]):\n\tThe Param value is undefined and no default value is specified.\n",
    "decision_variables": {},
    "retry_attempt": 4
  }
}
