Iteration final - SOLVER_EXECUTION
Sequence: 6
Timestamp: 2025-07-27 23:00:42

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

Response:
{
  "gurobipy": {
    "solver_type": "gurobipy",
    "execution_time": 0.28780484199523926,
    "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 6 rows, 9 columns and 18 nonzeros\nModel fingerprint: 0x93154f1c\nVariable types: 0 continuous, 9 integer (9 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [8e+03, 2e+04]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [1e+00, 1e+00]\nPresolve time: 0.00s\nPresolved: 6 rows, 9 columns, 18 nonzeros\nVariable types: 0 continuous, 9 integer (9 binary)\nFound heuristic solution: objective 33726.000000\n\nRoot relaxation: infeasible, 4 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      33726.0000 33726.0000  0.00%     -    0s\n\nExplored 1 nodes (4 simplex iterations) in 0.00 seconds (0.00 work units)\nThread count was 32 (of 128 available processors)\n\nSolution count 1: 33726 \n\nOptimal solution found (tolerance 1.00e-04)\nBest objective 3.372600000000e+04, best bound 3.372600000000e+04, gap 0.0000%\nOptimal value: 33726.0\nShip 1 assigned to Mission 103\nShip 2 assigned to Mission 101\nShip 3 assigned to Mission 102\n",
    "stderr": "",
    "status": "infeasible",
    "optimal_value": null,
    "error_message": "Problem is infeasible",
    "decision_variables": {},
    "retry_attempt": 4
  },
  "docplex": {
    "solver_type": "docplex",
    "execution_time": 2.1749467849731445,
    "return_code": 0,
    "stdout": "Optimal value: 33726.0\nShip 1 assigned to Mission 101\nShip 2 assigned to Mission 102\nShip 3 assigned to Mission 103\n",
    "stderr": "",
    "status": "optimal",
    "optimal_value": 33726.0,
    "error_message": null,
    "decision_variables": {},
    "retry_attempt": 4
  },
  "pyomo": {
    "solver_type": "pyomo",
    "execution_time": 2.7178878784179688,
    "return_code": 0,
    "stdout": "Read LP format model from file /tmp/tmprxgzf5fg.pyomo.lp\nReading time = 0.00 seconds\nx1: 6 rows, 9 columns, 18 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 6 rows, 9 columns and 18 nonzeros\nModel fingerprint: 0x93154f1c\nVariable types: 0 continuous, 9 integer (9 binary)\nCoefficient statistics:\n  Matrix range     [1e+00, 1e+00]\n  Objective range  [8e+03, 2e+04]\n  Bounds range     [1e+00, 1e+00]\n  RHS range        [1e+00, 1e+00]\nPresolve time: 0.00s\nPresolved: 6 rows, 9 columns, 18 nonzeros\nVariable types: 0 continuous, 9 integer (9 binary)\nFound heuristic solution: objective 33726.000000\n\nRoot relaxation: infeasible, 4 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      33726.0000 33726.0000  0.00%     -    0s\n\nExplored 1 nodes (4 simplex iterations) in 0.00 seconds (0.00 work units)\nThread count was 32 (of 128 available processors)\n\nSolution count 1: 33726 \n\nOptimal solution found (tolerance 1.00e-04)\nBest objective 3.372600000000e+04, best bound 3.372600000000e+04, gap 0.0000%\nOptimal solution found!\nOptimal value: 33726.0\n\nAssignment of ships to missions:\nShip 1 assigned to Mission 103\nShip 2 assigned to Mission 101\nShip 3 assigned to Mission 102\n",
    "stderr": "",
    "status": "infeasible",
    "optimal_value": null,
    "error_message": "Problem is infeasible",
    "decision_variables": {},
    "retry_attempt": 4
  }
}
