Iteration final - SOLVER_EXECUTION
Sequence: 6
Timestamp: 2025-07-27 23:36:21

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

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 0.15891027450561523,
    "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 12 rows, 9 columns and 21 nonzeros\nModel fingerprint: 0x9a4b230d\nVariable types: 0 continuous, 9 integer (9 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [1e+00, 1e+00]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [5e+00, 5e+00]\nFound heuristic solution: objective -0.0000000\nFound heuristic solution: objective 6.0000000\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 2: 6 -0 \n\nOptimal solution found (tolerance 1.00e-04)\nBest objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0000%\nOptimal value: 6.0\nStudent 0 considers Student 0 a friend\nStudent 0 considers Student 1 a friend\nStudent 0 considers Student 2 a friend\nStudent 1 considers Student 0 a friend\nStudent 1 considers Student 1 a friend\nStudent 1 considers Student 2 a friend\nStudent 2 considers Student 0 a friend\nStudent 2 considers Student 1 a friend\nStudent 2 considers Student 2 a friend\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 6.0,
    "error_message": null,
    "decision_variables": {}
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 1.5663318634033203,
    "return_code": 0,
    "stdout": "Optimal value: 3.0\nx[0,1] = 1.000\nx[0,2] = 1.000\nx[1,0] = 1.000\nx[1,2] = 1.000\nx[2,0] = 1.000\nx[2,1] = 1.000\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 3.0,
    "error_message": null,
    "decision_variables": {}
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 1.6131267547607422,
    "return_code": 0,
    "stdout": "Read LP format model from file /tmp/tmpvx78uk8p.pyomo.lp\nReading time = 0.00 seconds\nx1: 9 rows, 6 columns, 18 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, 6 columns and 18 nonzeros\nModel fingerprint: 0xfb93ca53\nVariable types: 0 continuous, 6 integer (6 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [1e+00, 1e+00]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [5e+00, 5e+00]\nFound heuristic solution: objective -0.0000000\nFound heuristic solution: objective 6.0000000\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 2: 6 -0 \n\nOptimal solution found (tolerance 1.00e-02)\nBest objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0000%\nOptimal solution found!\nOptimal value: 6.0\n\nMutual Friendships:\nStudent 1 and Student 2 are mutual friends.\nStudent 1 and Student 3 are mutual friends.\nStudent 2 and Student 3 are mutual friends.\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 6.0,
    "error_message": null,
    "decision_variables": {}
  }
}
