Iteration final - SOLVER_EXECUTION
Sequence: 8
Timestamp: 2025-07-27 21:59:36

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

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 0.20963096618652344,
    "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 6 nonzeros\nModel fingerprint: 0xd4aceebe\nVariable types: 0 continuous, 3 integer (3 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [8e+00, 2e+01]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [1e+00, 2e+00]\nFound heuristic solution: objective 27.0000000\nPresolve removed 4 rows and 3 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: 27 \n\nOptimal solution found (tolerance 1.00e-04)\nBest objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0000%\nOptimal value: 27.0\nArtist 1 selected: x[0] = 1.000\nArtist 3 selected: x[2] = 1.000\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 27.0,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 1
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 8.374728918075562,
    "return_code": 0,
    "stdout": "Optimal value: 27.0\nArtist 1 is selected.\nArtist 3 is selected.\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 27.0,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 1
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 1.1572976112365723,
    "return_code": 0,
    "stdout": "Read LP format model from file /tmp/tmplth6596o.pyomo.lp\nReading time = 0.00 seconds\nx1: 4 rows, 3 columns, 6 nonzeros\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 6 nonzeros\nModel fingerprint: 0xd4aceebe\nVariable types: 0 continuous, 3 integer (3 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [8e+00, 2e+01]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [1e+00, 2e+00]\nFound heuristic solution: objective 27.0000000\nPresolve removed 4 rows and 3 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: 27 \n\nOptimal solution found (tolerance 1.00e-04)\nBest objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0000%\nOptimal solution found!\nOptimal value: 27.0\n\nSelected artists:\nArtist 1 selected\nArtist 3 selected\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 27.0,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 1
  }
}
