Iteration final - SOLVER_EXECUTION
Sequence: 8
Timestamp: 2025-07-25 22:47:17

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

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 0.1840808391571045,
    "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, 18 columns and 72 nonzeros\nModel fingerprint: 0x96c8514d\nVariable types: 0 continuous, 18 integer (18 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [1e+02, 2e+02]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [1e+00, 1e+00]\nPresolve removed 3 rows and 0 columns\nPresolve time: 0.00s\nPresolved: 9 rows, 18 columns, 54 nonzeros\nVariable types: 0 continuous, 18 integer (18 binary)\n\nRoot relaxation: objective 4.500000e+02, 6 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  450.00000    0    6          -  450.00000      -     -    0s\n     0     0 infeasible    0               - infeasible      -     -    0s\n\nCutting planes:\n  MIR: 2\n  Zero half: 5\n\nExplored 1 nodes (7 simplex iterations) in 0.01 seconds (0.00 work units)\nThread count was 32 (of 128 available processors)\n\nSolution count 0\nNo other solutions better than -1e+100\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": 4
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 1.0210585594177246,
    "return_code": 0,
    "stdout": "No solution found\nStatus: integer infeasible\n",
    "stderr": "",
    "status": "infeasible",
    "optimal_value": null,
    "error_message": "Problem is infeasible",
    "decision_variables": {},
    "retry_attempt": 4
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 0.9853098392486572,
    "return_code": 0,
    "stdout": "Read LP format model from file /tmp/tmpf7xrct98.pyomo.lp\nReading time = 0.00 seconds\nx1: 12 rows, 18 columns, 72 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 12 rows, 18 columns and 72 nonzeros\nModel fingerprint: 0x96c8514d\nVariable types: 0 continuous, 18 integer (18 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [1e+02, 2e+02]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [1e+00, 1e+00]\nPresolve removed 3 rows and 0 columns\nPresolve time: 0.00s\nPresolved: 9 rows, 18 columns, 54 nonzeros\nVariable types: 0 continuous, 18 integer (18 binary)\n\nRoot relaxation: objective 4.500000e+02, 6 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  450.00000    0    6          -  450.00000      -     -    0s\n     0     0 infeasible    0               - infeasible      -     -    0s\n\nCutting planes:\n  MIR: 2\n  Zero half: 5\n\nExplored 1 nodes (7 simplex iterations) in 0.01 seconds (0.00 work units)\nThread count was 32 (of 128 available processors)\n\nSolution count 0\nNo other solutions better than -1e+100\n\nModel is infeasible\nBest objective -, best bound -, gap -\nWARNING: Loading a SolverResults object with a warning status into\nmodel.name=\"unknown\";\n    - termination condition: infeasible\n    - message from solver: Model was proven to be infeasible.\nProblem is infeasible\n",
    "stderr": "",
    "status": "infeasible",
    "optimal_value": null,
    "error_message": "Problem is infeasible",
    "decision_variables": {},
    "retry_attempt": 4
  }
}
