Iteration final - SOLVER_EXECUTION
Sequence: 6
Timestamp: 2025-07-25 22:35:37

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

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 0.1781778335571289,
    "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 4 rows, 3 columns and 3 nonzeros\nModel fingerprint: 0x45504eff\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [3e+01, 6e+01]\n  Bounds range     [2e+00, 2e+01]\n  RHS range        [2e+02, 2e+02]\nPresolve removed 4 rows and 3 columns\nPresolve time: 0.00s\nPresolve: All rows and columns removed\nIteration    Objective       Primal Inf.    Dual Inf.      Time\n       0    1.6837500e+03   0.000000e+00   0.000000e+00      0s\n\nSolved in 0 iterations and 0.00 seconds (0.00 work units)\nOptimal objective  1.683750000e+03\nOptimal value: 1683.75\nStaff assigned to shop 0: 10.000\nStaff assigned to shop 1: 12.000\nStaff assigned to shop 2: 15.000\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 1683.75,
    "error_message": null,
    "decision_variables": {}
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 1.2271089553833008,
    "return_code": 0,
    "stdout": "Optimal value: 1683.75\nStaff assigned to shop 0: 10.000\nStaff assigned to shop 1: 12.000\nStaff assigned to shop 2: 15.000\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 1683.75,
    "error_message": null,
    "decision_variables": {}
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 0.884289026260376,
    "return_code": 1,
    "stdout": "ERROR: Rule failed when generating expression for Constraint\nmax_spending_limit_constraint with index 1: ValueError: Invalid constraint\nexpression. The constraint expression resolved to a trivial Boolean (True)\ninstead of a Pyomo object. Please modify your rule to return\nConstraint.Feasible instead of True.\n\n    Error thrown for Constraint 'max_spending_limit_constraint[1]'\nERROR: Constructing component 'max_spending_limit_constraint' from data=None\nfailed:\n        ValueError: Invalid constraint expression. The constraint expression\n        resolved to a trivial Boolean (True) instead of a Pyomo object. Please\n        modify your rule to return Constraint.Feasible instead of True.\n\n    Error thrown for Constraint 'max_spending_limit_constraint[1]'\n",
    "stderr": "Traceback (most recent call last):\n  File \"/tmp/tmposhjhl2b.py\", line 96, in <module>\n    coffee_shop_optimization()\n  File \"/tmp/tmposhjhl2b.py\", line 61, in coffee_shop_optimization\n    model.max_spending_limit_constraint = pyo.Constraint(model.I, rule=max_spending_limit_rule)\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/constraint.py\", line 722, in construct\n    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/indexed_component.py\", line 1111, in _setitem_when_not_present\n    obj.set_value(value)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/constraint.py\", line 469, in set_value\n    raise ValueError(\nValueError: Invalid constraint expression. The constraint expression resolved to a trivial Boolean (True) instead of a Pyomo object. Please modify your rule to return Constraint.Feasible instead of True.\n\nError thrown for Constraint 'max_spending_limit_constraint[1]'\n",
    "status": "error",
    "optimal_value": null,
    "error_message": "Traceback (most recent call last):\n  File \"/tmp/tmposhjhl2b.py\", line 96, in <module>\n    coffee_shop_optimization()\n  File \"/tmp/tmposhjhl2b.py\", line 61, in coffee_shop_optimization\n    model.max_spending_limit_constraint = pyo.Constraint(model.I, rule=max_spending_limit_rule)\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/constraint.py\", line 722, in construct\n    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/indexed_component.py\", line 1111, in _setitem_when_not_present\n    obj.set_value(value)\n  File \"/dccstor/nl2opt/miniforge3/envs/nl2opt_optim/lib/python3.10/site-packages/pyomo/core/base/constraint.py\", line 469, in set_value\n    raise ValueError(\nValueError: Invalid constraint expression. The constraint expression resolved to a trivial Boolean (True) instead of a Pyomo object. Please modify your rule to return Constraint.Feasible instead of True.\n\nError thrown for Constraint 'max_spending_limit_constraint[1]'\n",
    "decision_variables": {}
  }
}
