Iteration final - SOLVER_EXECUTION
Sequence: 8
Timestamp: 2025-07-27 22:41:29

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

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 0.36032938957214355,
    "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, 9 columns and 12 nonzeros\nModel fingerprint: 0xdbbe3366\nVariable types: 0 continuous, 9 integer (9 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [8e-01, 9e-01]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [1e+00, 2e+02]\nFound heuristic solution: objective 1.6000000\nPresolve removed 6 rows and 9 columns\nPresolve time: 0.00s\nPresolve: All rows and columns removed\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: 1.6 \n\nOptimal solution found (tolerance 1.00e-04)\nBest objective 1.600000000000e+00, best bound 1.600000000000e+00, gap 0.0000%\nOptimal value: 1.6\nMember 1 assigned to Event 101\nMember 3 assigned to Event 103\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 1.6,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 2
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 8.214502573013306,
    "return_code": 0,
    "stdout": "Optimal value: 1.6\nMember 1 assigned to Event 101\nMember 3 assigned to Event 103\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 1.6,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 2
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 5.787516117095947,
    "return_code": 1,
    "stdout": "ERROR: Rule failed when generating expression for Constraint\nmember_availability_constraint with index (1, 101): TypeError: '<=' not\nsupported between instances of 'VarData' and 'bool'\nERROR: Constructing component 'member_availability_constraint' from data=None\nfailed:\n        TypeError: '<=' not supported between instances of 'VarData' and\n        'bool'\n",
    "stderr": "Traceback (most recent call last):\n  File \"/tmp/tmpvdmz0x23.py\", line 86, in <module>\n    party_people_optimization()\n  File \"/tmp/tmpvdmz0x23.py\", line 58, in party_people_optimization\n    model.member_availability_constraint = pyo.Constraint(model.M, model.E, rule=member_availability_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/initializer.py\", line 349, in __call__\n    return self._fcn(parent, *idx)\n  File \"/tmp/tmpvdmz0x23.py\", line 57, in member_availability_rule\n    return model.x[m, e] <= model.is_available[m, e]\nTypeError: '<=' not supported between instances of 'VarData' and 'bool'\n",
    "status": "error",
    "optimal_value": null,
    "error_message": "Traceback (most recent call last):\n  File \"/tmp/tmpvdmz0x23.py\", line 86, in <module>\n    party_people_optimization()\n  File \"/tmp/tmpvdmz0x23.py\", line 58, in party_people_optimization\n    model.member_availability_constraint = pyo.Constraint(model.M, model.E, rule=member_availability_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/initializer.py\", line 349, in __call__\n    return self._fcn(parent, *idx)\n  File \"/tmp/tmpvdmz0x23.py\", line 57, in member_availability_rule\n    return model.x[m, e] <= model.is_available[m, e]\nTypeError: '<=' not supported between instances of 'VarData' and 'bool'\n",
    "decision_variables": {},
    "retry_attempt": 2
  }
}
