Iteration final - SOLVER_EXECUTION
Sequence: 6
Timestamp: 2025-07-25 22:32:36

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

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 0.17274117469787598,
    "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 13 rows, 6 columns and 15 nonzeros\nModel fingerprint: 0x47484649\nVariable types: 0 continuous, 6 integer (0 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 6e+03]\n  Objective range  [5e-01, 7e-01]\n  Bounds range     [1e+00, 2e+01]\n  RHS range        [1e+00, 2e+05]\nFound heuristic solution: objective 37.0000000\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: 37 \n\nOptimal solution found (tolerance 1.00e-04)\nBest objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0000%\nOptimal value: 37.0\nRegion 1: Members assigned = 20.0, Events organized = 1.0\nRegion 2: Members assigned = 25.0, Events organized = 2.0\nRegion 3: Members assigned = 15.0, Events organized = 1.0\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 37.0,
    "error_message": null,
    "decision_variables": {}
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 1.0465147495269775,
    "return_code": 0,
    "stdout": "Optimal value: 37.0\nRegion 1: Members assigned = 20.0, Events organized = 1.0\nRegion 2: Members assigned = 25.0, Events organized = 2.0\nRegion 3: Members assigned = 15.0, Events organized = 1.0\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 37.0,
    "error_message": null,
    "decision_variables": {}
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 0.9016382694244385,
    "return_code": 0,
    "stdout": "Read LP format model from file /tmp/tmpuaxzdno6.pyomo.lp\nReading time = 0.00 seconds\nx1: 13 rows, 6 columns, 15 nonzeros\nSet parameter TimeLimit to value 300\nSet parameter MIPGap to value 0.01\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\nNon-default parameters:\nTimeLimit  300\nMIPGap  0.01\n\nOptimize a model with 13 rows, 6 columns and 15 nonzeros\nModel fingerprint: 0x994991d7\nVariable types: 0 continuous, 6 integer (0 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 6e+03]\n  Objective range  [5e-01, 7e-01]\n  Bounds range     [0e+00, 0e+00]\n  RHS range        [1e+00, 2e+05]\nPresolve removed 13 rows and 6 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: 37 \n\nOptimal solution found (tolerance 1.00e-02)\nBest objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0000%\nOptimal solution found!\nOptimal value: 37.0\n\nVariable values:\nRegion 1: Members = 20, Events = 1\nRegion 2: Members = 25, Events = 2\nRegion 3: Members = 15, Events = 1\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 37.0,
    "error_message": null,
    "decision_variables": {}
  }
}
