Iteration final - SOLVER_EXECUTION
Sequence: 6
Timestamp: 2025-07-25 22:39:32

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

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 0.19521188735961914,
    "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 11 rows, 15 columns and 45 nonzeros\nModel fingerprint: 0x9c9d66ff\nVariable types: 0 continuous, 15 integer (15 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 2e+02]\n  Objective range  [1e+02, 2e+02]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [1e+00, 2e+02]\nPresolve removed 3 rows and 0 columns\nPresolve time: 0.00s\nPresolved: 8 rows, 15 columns, 30 nonzeros\nVariable types: 0 continuous, 15 integer (15 binary)\n\nRoot relaxation: infeasible, 8 iterations, 0.00 seconds (0.00 work units)\n\n    Nodes    |    Current Node    |     Objective Bounds      |     Work\n Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time\n\n     0     0 infeasible    0               - infeasible      -     -    0s\n\nExplored 1 nodes (8 simplex iterations) in 0.00 seconds (0.00 work units)\nThread count was 32 (of 128 available processors)\n\nSolution count 0\n\nModel is infeasible\nBest objective -, best bound -, gap -\nProblem is infeasible\n",
    "stderr": "",
    "status": "infeasible",
    "optimal_value": null,
    "error_message": "Problem is infeasible",
    "decision_variables": {},
    "retry_attempt": 3
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 0.8981404304504395,
    "return_code": 0,
    "stdout": "Optimal value: 370.0\nScientist 0 is assigned to Project 0\nScientist 1 is assigned to Project 1\nScientist 2 is assigned to Project 2\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 370.0,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 3
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 1.0181748867034912,
    "return_code": 0,
    "stdout": "Read LP format model from file /tmp/tmp1j81b6s9.pyomo.lp\nReading time = 0.00 seconds\nx1: 9 rows, 9 columns, 27 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 9 rows, 9 columns and 27 nonzeros\nModel fingerprint: 0x6c612e17\nVariable types: 0 continuous, 9 integer (9 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 2e+02]\n  Objective range  [1e+02, 2e+02]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [1e+00, 2e+02]\nPresolve removed 3 rows and 0 columns\nPresolve time: 0.00s\nPresolved: 6 rows, 9 columns, 18 nonzeros\nVariable types: 0 continuous, 9 integer (9 binary)\nFound heuristic solution: objective 370.0000000\n\nExplored 0 nodes (0 simplex iterations) in 0.00 seconds (0.00 work units)\nThread count was 32 (of 128 available processors)\n\nSolution count 1: 370 \n\nOptimal solution found (tolerance 1.00e-02)\nBest objective 3.700000000000e+02, best bound 3.700000000000e+02, gap 0.0000%\nOptimal value: 370.0\n\nAssignment details:\nScientist 1 assigned to Project 1\nScientist 2 assigned to Project 2\nScientist 3 assigned to Project 3\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 370.0,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 3
  }
}
