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ROLLOUT 7 · Qiskit/qiskit-terra

qiskit__qiskit-terra-5833

Not solved
491 stotal time
7tool calls
7model calls
3,167tokens generated
66,751prompt tokens read

Empty agent patch

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System instructions 4,822 characters
You are a principal Python software engineer resolving a repository issue in `/workspace`.
Your sole objective is to produce a minimal, root-cause source patch that passes every hidden fail-to-pass and pass-to-pass regression test on the first grading run.

## Critical Environment & Grader Rules
1. **Air-Gapped Sandbox & Available CLI Tools**: No network access. Never run `pip`, `uv`, `conda`, or `git fetch`. Note: `rg` (`ripgrep`) is NOT installed in the container — always use `grep -rn --include="*.py"` for fast exact searches so you never waste a tool call on `command not found`.
2. **Protected Grading Paths**: Before running official verification, the grading harness **strips and reverts all changes** to `tests/`, `test/`, `testing/`, `test_*.py`, `*_test.py`, `conftest.py`, `pyproject.toml`, `setup.cfg`, `pytest.ini`, and `tox.ini`. Every part of your fix MUST reside in non-test production source files.
3. **Untracked File Trap (`git add -N .`)**: `submit_patch` stages ALL untracked files inside `/workspace`! Never leave reproduction or scratch files inside `/workspace` — run reproductions inline via `python3 - <<'PY'` or inside `/tmp/repro.py` in a single `run_command`.
4. **Stdout Truncation Rule**: `run_command` truncates stdout after the first 5,000 characters from the TOP. Always run pytest quietly with short tracebacks:
   `pytest path/to/test_file.py -k pattern -q --tb=short --no-header`
   If a test file is large, redirect output to `/tmp/pytest.log` and inspect `tail -n 80 /tmp/pytest.log` so failure tracebacks at the bottom are never cut off.
5. **Strict Pacing Discipline**: `get_status` and `submit_patch` are free and do NOT count toward `max_tool_calls`. Target **16-22 counted tool calls total**, and **begin your first `edit_file` change no later than tool call 15**. Reserve at least 4 calls for verification, `git status --short && git diff`, and submission.

## Execution Protocol

### Phase 1 — Pinpoint Code & Tests Immediately (1-2 tool calls)
- The user message already contains `Workspace Layout` — do NOT waste a turn running `ls` on top-level directories.
- Run a single compound `run_command` with `grep -rn --include="*.py"` to locate:
  (a) the exact symbols, error strings, or functions from the problem description,
  (b) **all parallel or sibling implementations** (for example sync + async variants, `Client` + `AsyncClient`, serializer + deserializer, multiple backends/dialects, base + subclass methods, `__init__.py` / `__all__` exports), and
  (c) the closest existing unit test files under `tests/`.

### Phase 2 — Deep Read & Spec Anchor (2-5 tool calls)
- Use `read_file` with generous `start_line` and `end_line` windows (180-300 lines per call so you read whole modules in fewer calls) on the target function/class, callers, type annotations, and neighboring tests.
- Before editing, verify every explicit and implicit requirement from the issue: exact parameter names, defaults, boundary/domain edge cases, exception types/messages, `None` vs empty collection vs falsy (`0`, `False`, `""`) semantics, mutability/copying, and return types.

### Phase 3 — Reproduce Bug in One Call (1 tool call)
- Run ONE concise command (`python3 - <<'PY' ... PY` or targeted `pytest ... -q --tb=short --no-header`) via `run_command` to observe the exact pre-fix failure. Do NOT spend multiple tool calls writing separate reproduction scripts.

### Phase 4 — Surgical Implementation Across All Parallel Paths (1-4 tool calls)
- Begin editing by tool call 15! Use `edit_file` with 4-6 lines of exact surrounding context copied from `read_file`.
- Update ALL parallel codepaths (sync/async, multiple classes/dialects, type hints) consistently so partial fixes do not fail sibling tests.
- **2-Strike Edit Rule**: If `edit_file` fails twice on the same block due to whitespace or escaping, do not retry `edit_file` a third time — apply an atomic Python transformation via `run_command` and immediately verify `python3 -m py_compile path/to/file.py`.

### Phase 5 — Edge-Case Verification, Diff Hygiene & Clean Exit (2-4 tool calls)
- Run a single compound `run_command` testing both your reproduction + boundary edge cases (`None`, empty input, leading/trailing delimiters, subdomain/prefix boundaries, subclass/async parity) AND the relevant existing `pytest` module(s) with `-q --tb=short --no-header`.
- Run `git status --short && git diff` via `run_command`. Confirm:
  - ZERO untracked (`??`) files in `/workspace` (`rm -f` any untracked workspace files immediately),
  - ZERO modifications to `tests/` or protected config files (`git checkout -- tests/` if touched),
  - Minimal, clean diff with valid imports and indentation.
- Call `submit_patch` once verification passes, then respond with a brief 2-sentence plain-text summary and make NO further tool calls.
Task prompt 10,333 characters
You are evaluating a software engineering task for repository Qiskit/qiskit-terra.

Problem Statement:
OptimizeSwapBeforeMeasure needs multiple invocations
The `OptimizeSwapBeforeMeasure` pass is supposed to commute quantum SWAP gates that immediately precede measurements, past the measurements, and instead convert them to classical swap (i.e.just retarget the measurement clbit).

However this should be generalized to work with any permutation that happens before the measurements, not just one swap layer. I made this work by invoking it many times for the example below, but really one invocation should be smart enough to remove all the swaps (that whole swap network should be modeled as a permutation).

```py
from qiskit import QuantumCircuit
from qiskit.transpiler.passes import OptimizeSwapBeforeMeasure, Depth, FixedPoint
from qiskit.transpiler import PassManager

circ = QuantumCircuit(8, 8)
circ.swap(3, 4)
circ.swap(6, 7)
circ.swap(0, 1)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(3, 4)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(0, 1)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(6, 7)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(3, 4)
circ.swap(3, 4)
circ.swap(5, 6)
circ.swap(1, 2)
circ.swap(4, 5)
circ.swap(2, 3)
circ.swap(5, 6)
circ.measure(range(8), range(8))
print(circ)

_depth_check = [Depth(), FixedPoint('depth')]
_opt = [OptimizeSwapBeforeMeasure()]
def _opt_control(property_set):
    return not property_set['depth_fixed_point']

pm = PassManager()
pm.append(_depth_check + _opt, do_while=_opt_control)  # should not need this do_while
print(pm.run(circ))
```

```
                    ┌─┐                                 
q_0: ─X──X─────X────┤M├─────────────────────────────────
      │  │     │    └╥┘         ┌─┐                     
q_1: ─X──X──X──X──X──╫─────X────┤M├─────────────────────
            │     │  ║     │    └╥┘      ┌─┐            
q_2: ───────X──X──X──╫──X──X─────╫──X────┤M├────────────
               │     ║  │        ║  │    └╥┘┌─┐         
q_3: ─X─────X──X─────╫──X──X──X──╫──X─────╫─┤M├─────────
      │     │        ║     │  │  ║        ║ └╥┘┌─┐      
q_4: ─X──X──X──X─────╫──X──X──X──╫──X─────╫──╫─┤M├──────
         │     │     ║  │        ║  │     ║  ║ └╥┘┌─┐   
q_5: ────X──X──X──X──╫──X──X─────╫──X──X──╫──╫──╫─┤M├───
            │     │  ║     │     ║     │  ║  ║  ║ └╥┘┌─┐
q_6: ─X──X──X──X──X──╫──X──X─────╫─────X──╫──╫──╫──╫─┤M├
      │  │     │     ║  │ ┌─┐    ║        ║  ║  ║  ║ └╥┘
q_7: ─X──X─────X─────╫──X─┤M├────╫────────╫──╫──╫──╫──╫─
                     ║    └╥┘    ║        ║  ║  ║  ║  ║ 
c: 8/════════════════╩═════╩═════╩════════╩══╩══╩══╩══╩═
                     0     7     1        2  3  4  5  6 
           ┌─┐               
q_0: ──────┤M├───────────────
        ┌─┐└╥┘               
q_1: ───┤M├─╫────────────────
     ┌─┐└╥┘ ║                
q_2: ┤M├─╫──╫────────────────
     └╥┘ ║  ║    ┌─┐         
q_3: ─╫──╫──╫────┤M├─────────
      ║  ║  ║    └╥┘      ┌─┐
q_4: ─╫──╫──╫─────╫───────┤M├
      ║  ║  ║ ┌─┐ ║       └╥┘
q_5: ─╫──╫──╫─┤M├─╫────────╫─
      ║  ║  ║ └╥┘ ║ ┌─┐    ║ 
q_6: ─╫──╫──╫──╫──╫─┤M├────╫─
      ║  ║  ║  ║  ║ └╥┘┌─┐ ║ 
q_7: ─╫──╫──╫──╫──╫──╫─┤M├─╫─
      ║  ║  ║  ║  ║  ║ └╥┘ ║ 
c: 8/═╩══╩══╩══╩══╩══╩══╩══╩═
      0  1  2  3  4  5  6  7 
```

## Task Budget (Session terminates when any budget is exhausted)
- Time allowance: 7.5 minutes
- Tool calls allowance: 30 calls
- Max loop iterations: 40 turns

## Execution Environment Rules
- Single command timeout: 90 seconds (commands exceeding this fail without ending the session)
- Command output limit: 5000 characters
- File view limit: 150 lines per read_file call
- File character limit: 10000 characters per read_file call
- Environment is offline (no network/PyPI access). All repository and test dependencies are ALREADY pre-installed. Do NOT attempt to run pip install or download packages.

## Instructions:
0. All source code is under `/workspace`. Do NOT search outside `/workspace` (e.g. `/usr/`, `/wheels/`, system site-packages). If imports fail, the issue is in the source code under `/workspace`, not in missing system packages.
1. Analyze the problem statement and any provided hints carefully to identify all requested script paths, CLI subcommands, or Python modules.
2. Inspect existing codebase conventions and test files before making edits.
3. Verify your implementation using targeted tests or inline assertions before submitting.
4. Call submit_patch only after your implementation is complete and verified.
5. As your final action, you must return a text-only response reporting your completion to terminate the session.
## Workspace Layout
The repository is located at `/workspace`. Here is the directory tree (up to 3 levels):
```
./CODE_OF_CONDUCT.md
./CONTRIBUTING.md
./LICENSE.txt
./MANIFEST.in
./Make.bat
./Makefile
./README.md
./azure-pipelines.yml
./constraints.txt
./docs
./examples
./postBuild
./pyproject.toml
./qiskit
./qiskit/VERSION.txt
./qiskit/__init__.py
./qiskit/algorithms
./qiskit/algorithms/__init__.py
./qiskit/algorithms/algorithm_result.py
./qiskit/algorithms/amplitude_amplifiers
./qiskit/algorithms/amplitude_estimators
./qiskit/algorithms/eigen_solvers
./qiskit/algorithms/exceptions.py
./qiskit/algorithms/factorizers
./qiskit/algorithms/minimum_eigen_solvers
./qiskit/algorithms/optimizers
./qiskit/algorithms/variational_algorithm.py
./qiskit/algorithms/variational_forms
./qiskit/assembler
./qiskit/assembler/__init__.py
./qiskit/assembler/assemble_circuits.py
./qiskit/assembler/assemble_schedules.py
./qiskit/assembler/disassemble.py
./qiskit/assembler/run_config.py
./qiskit/circuit
./qiskit/circuit/__init__.py
./qiskit/circuit/_utils.py
./qiskit/circuit/add_control.py
./qiskit/circuit/barrier.py
./qiskit/circuit/bit.py
./qiskit/circuit/classicalfunction
./qiskit/circuit/classicalregister.py
./qiskit/circuit/controlledgate.py
./qiskit/circuit/delay.py
./qiskit/circuit/duration.py
./qiskit/circuit/equivalence.py
./qiskit/circuit/equivalence_library.py
./qiskit/circuit/exceptions.py
./qiskit/circuit/gate.py
./qiskit/circuit/instruction.py
./qiskit/circuit/instructionset.py
./qiskit/circuit/library
./qiskit/circuit/measure.py
./qiskit/circuit/parameter.py
./qiskit/circuit/parameterexpression.py
./qiskit/circuit/parametertable.py
./qiskit/circuit/parametervector.py
./qiskit/circuit/quantumcircuit.py
./qiskit/circuit/quantumcircuitdata.py
./qiskit/circuit/quantumregister.py
./qiskit/circuit/random
./qiskit/circuit/register.py
./qiskit/circuit/reset.py
./qiskit/circuit/tools
./qiskit/compiler
./qiskit/compiler/__init__.py
./qiskit/compiler/assembler.py
./qiskit/compiler/scheduler.py
./qiskit/compiler/sequencer.py
./qiskit/compiler/transpiler.py
./qiskit/converters
./qiskit/converters/__init__.py
./qiskit/converters/ast_to_dag.py
./qiskit/converters/circuit_to_dag.py
./qiskit/converters/circuit_to_dagdependency.py
./qiskit/converters/circuit_to_gate.py
./qiskit/converters/circuit_to_instruction.py
./qiskit/converters/dag_to_circuit.py
./qiskit/converters/dag_to_dagdependency.py
./qiskit/converters/dagdependency_to_circuit.py
./qiskit/converters/dagdependency_to_dag.py
./qiskit/dagcircuit
./qiskit/dagcircuit/__init__.py
./qiskit/dagcircuit/dagcircuit.py
./qiskit/dagcircuit/dagdependency.py
./qiskit/dagcircuit/dagdepnode.py
./qiskit/dagcircuit/dagnode.py
./qiskit/dagcircuit/exceptions.py
./qiskit/exceptions.py
./qiskit/execute_function.py
./qiskit/extensions
./qiskit/extensions/__init__.py
./qiskit/extensions/exceptions.py
./qiskit/extensions/hamiltonian_gate.py
./qiskit/extensions/quantum_initializer
./qiskit/extensions/simulator
./qiskit/extensions/unitary.py
./qiskit/opflow
./qiskit/opflow/__init__.py
./qiskit/opflow/converters
./qiskit/opflow/evolutions
./qiskit/opflow/exceptions.py
./qiskit/opflow/expectations
./qiskit/opflow/gradients
./qiskit/opflow/list_ops
./qiskit/opflow/operator_base.py
./qiskit/opflow/operator_globals.py
./qiskit/opflow/primitive_ops
./qiskit/opflow/state_fns
./qiskit/providers
./qiskit/providers/__init__.py
./qiskit/providers/backend.py
./qiskit/providers/basebackend.py
./qiskit/providers/basejob.py
./qiskit/providers/baseprovider.py
./qiskit/providers/basicaer
./qiskit/providers/exceptions.py
./qiskit/providers/job.py
./qiskit/providers/jobstatus.py
./qiskit/providers/models
./qiskit/providers/options.py
./qiskit/providers/provider.py
./qiskit/providers/providerutils.py
./qiskit/pulse
./qiskit/pulse/__init__.py
./qiskit/pulse/builder.py
./qiskit/pulse/channels.py
./qiskit/pulse/configuration.py
./qiskit/pulse/exceptions.py
./qiskit/pulse/instruction_schedule_map.py
./qiskit/pulse/instructions
./qiskit/pulse/interfaces.py
./qiskit/pulse/library
./qiskit/pulse/macros.py
./qiskit/pulse/parser.py
./qiskit/pulse/reschedule.py
./qiskit/pulse/schedule.py
./qiskit/pulse/transforms.py
./qiskit/pulse/utils.py
./qiskit/qasm
./qiskit/qasm/__init__.py
./qiskit/qasm/exceptions.py
./qiskit/qasm/libs
./qiskit/qasm/node
./qiskit/qasm/pygments
./qiskit/qasm/qasm.py
./qiskit/qasm/qasmlexer.py
./qiskit/qasm/qasmparser.py
./qiskit/qobj
./qiskit/qobj/__init__.py
./qiskit/qobj/common.py
./qiskit/qobj/converters
./qiskit/qobj/pulse_qobj.py
./qiskit/qobj/qasm_qobj.py
./qiskit/qobj/utils.py
./qiskit/quantum_info
./qiskit/quantum_info/__init__.py
./qiskit/quantum_info/analysis
./qiskit/quantum_info/operators
./qiskit/quantum_info/random.py
./qiskit/quantum_info/states
./qiskit/quantum_info/synthesis
./qiskit/result
./qiskit/result/__init__.py
./qiskit/result/counts.py
./qiskit/result/exceptions.py
./qiskit/result/models.py
./qiskit/result/postprocess.py
./qiskit/result/result.py
./qiskit/result/utils.py
./qiskit/scheduler
./qiskit/scheduler/__init__.py
./qiskit/schemas
./qiskit/test
./qiskit/tools
./qiskit/transpiler
./qiskit/user_config.py
./qiskit/util.py
./qiskit/utils
./qiskit/validation
./qiskit/version.py
./qiskit/visualization
./releasenotes
./releasenotes/config.yaml
./releasenotes/notes
./requirements-dev.txt
./requirements.txt
./setup.py
./test
./test/__init__.py
./test/ipynb
./test/python
./test/randomized
./tools
./tools/find_optional_imports.py
./tools/report_ci_failure.py
./tools/subunit_to_junit.py
./tools/update_fake_backends.py
./tools/verify_headers.py
./tox.ini
```
Turn 1at 56 s164 tokens out5,925 prompt tokens
The user wants to optimize the `OptimizeSwapBeforeMeasure` pass in Qiskit Terra.
The current implementation of `OptimizeSwapBeforeMeasure` only commutes a single layer of SWAP gates before measurements. It should be generalized to work with any permutation of SWAP gates before measurements.

I need to:
1. Find the implementation of `OptimizeSwapBeforeMeasure`.
2. Understand how it works.
3. Create a reproduction script to demonstrate the issue.
4. Modify the implementation to handle multiple layers of SWAPs.
5. Verify the fix.

Let's start by locating `OptimizeSwapBeforeMeasure`.
TOOL CALL · run_command
{
  "command": "grep -rn --include=\"*.py\" \"OptimizeSwapBeforeMeasure\" ."
}
Result of run_command 1,888 characters
{
  "status": "ok",
  "stdout": "./qiskit/transpiler/passes/optimization/__init__.py:22:from .optimize_swap_before_measure import OptimizeSwapBeforeMeasure\n./qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py:22:class OptimizeSwapBeforeMeasure(TransformationPass):\n./qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py:30:        \"\"\"Run the OptimizeSwapBeforeMeasure pass on `dag`.\n./qiskit/transpiler/passes/__init__.py:159:from .optimization import OptimizeSwapBeforeMeasure\n./qiskit/transpiler/preset_passmanagers/level3.py:48:from qiskit.transpiler.passes import OptimizeSwapBeforeMeasure\n./qiskit/transpiler/preset_passmanagers/level3.py:181:    _meas = [OptimizeSwapBeforeMeasure(), RemoveDiagonalGatesBeforeMeasure()]\n./test/python/transpiler/test_optimize_swap_before_measure.py:13:\"\"\"Test OptimizeSwapBeforeMeasure pass\"\"\"\n./test/python/transpiler/test_optimize_swap_before_measure.py:19:from qiskit.transpiler.passes import OptimizeSwapBeforeMeasure, DAGFixedPoint\n./test/python/transpiler/test_optimize_swap_before_measure.py:24:class TestOptimizeSwapBeforeMeasure(QiskitTestCase):\n./test/python/transpiler/test_optimize_swap_before_measure.py:45:        pass_ = OptimizeSwapBeforeMeasure()\n./test/python/transpiler/test_optimize_swap_before_measure.py:71:        pass_ = OptimizeSwapBeforeMeasure()\n./test/python/transpiler/test_optimize_swap_before_measure.py:92:        pass_ = OptimizeSwapBeforeMeasure()\n./test/python/transpiler/test_optimize_swap_before_measure.py:98:class TestOptimizeSwapBeforeMeasureFixedPoint(QiskitTestCase):\n./test/python/transpiler/test_optimize_swap_before_measure.py:121:            [OptimizeSwapBeforeMeasure(), DAGFixedPoint()],\n./test/python/transpiler/test_optimize_swap_before_measure.py:149:            [OptimizeSwapBeforeMeasure(), DAGFixedPoint()],\n",
  "stderr": "",
  "exit_code": 0
}
Generated tokens 164 tokens · stopped: STOP
<|channel>thought The user wants to optimize the `OptimizeSwapBeforeMeasure` pass in Qiskit Terra. The current implementation of `OptimizeSwapBeforeMeasure` only commutes a single layer of SWAP gates before measurements. It should be generalized to work with any permutation of SWAP gates before measurements. I need to: 1. Find the implementation of `OptimizeSwapBeforeMeasure`. 2. Understand how it works. 3. Create a reproduction script to demonstrate the issue. 4. Modify the implementation to handle multiple layers of SWAPs. 5. Verify the fix. Let's start by locating `OptimizeSwapBeforeMeasure`.<channel|><|tool_call>call:run_command{command:<|"|>grep -rn --include="*.py" "OptimizeSwapBeforeMeasure" .<|"|>}<tool_call|><|tool_response>
Turn 2at 60 s98 tokens out6,687 prompt tokens
The implementation is in `qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py`.
The tests are in `test/python/transpiler/test_optimize_swap_before_measure.py`.

Let's examine the implementation.
TOOL CALL · read_file
{
  "filepath": "qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py"
}
Result of read_file 3,047 characters
{
  "status": "ok",
  "filepath": "qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py",
  "content": "# This code is part of Qiskit.\n#\n# (C) Copyright IBM 2017, 2019.\n#\n# This code is licensed under the Apache License, Version 2.0. You may\n# obtain a copy of this license in the LICENSE.txt file in the root directory\n# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.\n#\n# Any modifications or derivative works of this code must retain this\n# copyright notice, and modified files need to carry a notice indicating\n# that they have been altered from the originals.\n\n\n\"\"\"Remove the swaps followed by measurement (and adapt the measurement).\"\"\"\n\nfrom qiskit.circuit import Measure\nfrom qiskit.circuit.library.standard_gates import SwapGate\nfrom qiskit.transpiler.basepasses import TransformationPass\nfrom qiskit.dagcircuit import DAGCircuit\n\n\nclass OptimizeSwapBeforeMeasure(TransformationPass):\n    \"\"\"Remove the swaps followed by measurement (and adapt the measurement).\n\n    Transpiler pass to remove swaps in front of measurements by re-targeting\n    the classical bit of the measure instruction.\n    \"\"\"\n\n    def run(self, dag):\n        \"\"\"Run the OptimizeSwapBeforeMeasure pass on `dag`.\n\n        Args:\n            dag (DAGCircuit): the DAG to be optimized.\n\n        Returns:\n            DAGCircuit: the optimized DAG.\n        \"\"\"\n        swaps = dag.op_nodes(SwapGate)\n        for swap in swaps:\n            final_successor = []\n            for successor in dag.successors(swap):\n                final_successor.append(successor.type == 'out' or (successor.type == 'op' and\n                                                                   successor.op.name == 'measure'))\n            if all(final_successor):\n                # the node swap needs to be removed and, if a measure follows, needs to be adapted\n                swap_qargs = swap.qargs\n                measure_layer = DAGCircuit()\n                for qreg in dag.qregs.values():\n                    measure_layer.add_qreg(qreg)\n                for creg in dag.cregs.values():\n                    measure_layer.add_creg(creg)\n                for successor in list(dag.successors(swap)):\n                    if successor.type == 'op' and successor.op.name == 'measure':\n                        # replace measure node with a new one, where qargs is set with the \"other\"\n                        # swap qarg.\n                        dag.remove_op_node(successor)\n                        old_measure_qarg = successor.qargs[0]\n                        new_measure_qarg = swap_qargs[swap_qargs.index(old_measure_qarg) - 1]\n                        measure_layer.apply_operation_back(Measure(), [new_measure_qarg],\n                                                           [successor.cargs[0]])\n                dag.compose(measure_layer)\n                dag.remove_op_node(swap)\n        return dag",
  "start_line": 1,
  "end_line": 63,
  "total_lines": 63,
  "is_truncated": false
}
Generated tokens 98 tokens · stopped: STOP
The implementation is in `qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py`. The tests are in `test/python/transpiler/test_optimize_swap_before_measure.py`. Let's examine the implementation. <channel|><|tool_call>call:read_file{filepath:<|"|>qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py<|"|>}<tool_call|><|tool_response>
Turn 3at 128 s945 tokens out7,596 prompt tokens
The current logic is:
1. Iterate over all `SwapGate` op nodes.
2. For each swap, check if all its successors are either 'out' nodes or 'measure' op nodes.
3. If yes, it removes the swap and replaces the following measure instructions with new ones that measure the *other* qubit involved in the swap.
4. It then removes the swap node.

The problem is that if we have multiple layers of swaps before measurements, only the last layer (the one where successors are only 'out' or 'measure') will be processed in one call to `run`.

If we have:
Swap(0, 1) -> Swap(1, 2) -> Measure(2)
1. The second Swap(1, 2) is followed by Measure(2), so it's removed and Measure(2) is replaced by Measure(1).
2. The first Swap(0, 1) is followed by Swap(1, 2). Since Swap(1, 2) is not 'out' or 'measure', it is not removed.

Wait, the current implementation iterates over `dag.op_nodes(SwapGate)`. In what order?

If I have Swap1 -> Swap2 -> Measure, and the iterator gives Swap1 then Swap2.
When processing Swap1, its successor is Swap2. Swap2 is not 'out' or 'measure'. So Swap1 is not removed.
When processing Swap2, its successor is Measure. Swap2 is removed, and Measure is updated.

After this, we are left with Swap1 -> Measure.
If we call the pass again, Swap1 will then be processed.

The user wants this to happen in one call.

To do this, we should probably iterate backwards or repeatedly apply the logic until no more swaps can be removed.
Alternatively, we can model the permutation.

The user says: "this should be generalized to work with any permutation that happens before the measurements, not just one swap layer."

Actually, a better approach might be to identify all swaps that only have successors that are measurements (or other already-removed swaps, or 'out' nodes) and commute them.

Let's try to reproduce it first.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nfrom qiskit import QuantumCircuit\nfrom qiskit.transpiler.passes import OptimizeSwapBeforeMeasure, Depth, FixedPoint\nfrom qiskit.transpiler import PassManager\n\ncirc = QuantumCircuit(8, 8)\ncirc.swap(3, 4)\ncirc.swap(6, 7)\ncirc.swap(0, 1)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(3, 4)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(3, 4)\ncirc.swap(3, 4)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(5, 6)\ncirc.measure(range(8), range(8))\nprint(\"Original circuit depth:\", circ.depth())\n\npm = PassManager()\npm.append(OptimizeSwapBeforeMeasure())\noptimized_circ = pm.run(circ)\nprint(\"Optimized circuit depth:\", optimized_circ.depth())\n\n# Check if all swaps are gone.\n# The original circuit had 30 swaps.\n# In the provided example, if they are all gone, the depth should be 1 (just measurements).\n# Wait, the provided example's original circuit depth is more than 1.\n# Let's print the circuit depth.\nprint(optimized_circ)\nPY\n"
}
Result of run_command 4,871 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n  import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n  return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n  import pkg_resources\nTraceback (most recent call last):\n  File \"<stdin>\", line 1, in <module>\n  File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n    from qiskit.execute_function import execute  # noqa\n  File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n    from qiskit.compiler import transpile, assemble, schedule\n  File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n    from .transpiler import transpile\n  File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n    from qiskit.transpiler.passes import ApplyLayout\n  File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n    from .layout import SetLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n    from .sabre_layout import SabreLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n    from qiskit.transpiler.passes.routing import SabreSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n    from .stochastic_swap import StochasticSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n    from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
  "details": {
    "stdout": "",
    "stderr": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n  import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n  return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n  import pkg_resources\nTraceback (most recent call last):\n  File \"<stdin>\", line 1, in <module>\n  File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n    from qiskit.execute_function import execute  # noqa\n  File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n    from qiskit.compiler import transpile, assemble, schedule\n  File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n    from .transpiler import transpile\n  File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n    from qiskit.transpiler.passes import ApplyLayout\n  File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n    from .layout import SetLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n    from .sabre_layout import SabreLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n    from qiskit.transpiler.passes.routing import SabreSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n    from .stochastic_swap import StochasticSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n    from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
    "exit_code": 1
  }
}
Generated tokens 945 tokens · stopped: STOP
The current logic is: 1. Iterate over all `SwapGate` op nodes. 2. For each swap, check if all its successors are either 'out' nodes or 'measure' op nodes. 3. If yes, it removes the swap and replaces the following measure instructions with new ones that measure the *other* qubit involved in the swap. 4. It then removes the swap node. The problem is that if we have multiple layers of swaps before measurements, only the last layer (the one where successors are only 'out' or 'measure') will be processed in one call to `run`. If we have: Swap(0, 1) -> Swap(1, 2) -> Measure(2) 1. The second Swap(1, 2) is followed by Measure(2), so it's removed and Measure(2) is replaced by Measure(1). 2. The first Swap(0, 1) is followed by Swap(1, 2). Since Swap(1, 2) is not 'out' or 'measure', it is not removed. Wait, the current implementation iterates over `dag.op_nodes(SwapGate)`. In what order? If I have Swap1 -> Swap2 -> Measure, and the iterator gives Swap1 then Swap2. When processing Swap1, its successor is Swap2. Swap2 is not 'out' or 'measure'. So Swap1 is not removed. When processing Swap2, its successor is Measure. Swap2 is removed, and Measure is updated. After this, we are left with Swap1 -> Measure. If we call the pass again, Swap1 will then be processed. The user wants this to happen in one call. To do this, we should probably iterate backwards or repeatedly apply the logic until no more swaps can be removed. Alternatively, we can model the permutation. The user says: "this should be generalized to work with any permutation that happens before the measurements, not just one swap layer." Actually, a better approach might be to identify all swaps that only have successors that are measurements (or other already-removed swaps, or 'out' nodes) and commute them. Let's try to reproduce it first. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' from qiskit import QuantumCircuit from qiskit.transpiler.passes import OptimizeSwapBeforeMeasure, Depth, FixedPoint from qiskit.transpiler import PassManager circ = QuantumCircuit(8, 8) circ.swap(3, 4) circ.swap(6, 7) circ.swap(0, 1) circ.swap(6, 7) circ.swap(4, 5) circ.swap(0, 1) circ.swap(5, 6) circ.swap(3, 4) circ.swap(1, 2) circ.swap(6, 7) circ.swap(4, 5) circ.swap(2, 3) circ.swap(0, 1) circ.swap(5, 6) circ.swap(1, 2) circ.swap(6, 7) circ.swap(4, 5) circ.swap(2, 3) circ.swap(3, 4) circ.swap(3, 4) circ.swap(5, 6) circ.swap(1, 2) circ.swap(4, 5) circ.swap(2, 3) circ.swap(5, 6) circ.measure(range(8), range(8)) print("Original circuit depth:", circ.depth()) pm = PassManager() pm.append(OptimizeSwapBeforeMeasure()) optimized_circ = pm.run(circ) print("Optimized circuit depth:", optimized_circ.depth()) # Check if all swaps are gone. # The original circuit had 30 swaps. # In the provided example, if they are all gone, the depth should be 1 (just measurements). # Wait, the provided example's original circuit depth is more than 1. # Let's print the circuit depth. print(optimized_circ) PY <|"|>}<tool_call|><|tool_response>
Turn 4at 163 s608 tokens out10,084 prompt tokens
I got a `ModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'`.
This seems to be an environment issue with some cythonized modules.
However, I only need `OptimizeSwapBeforeMeasure` and `QuantumCircuit` and `PassManager`.

The error happens during `from qiskit import QuantumCircuit`.
Let's see where `QuantumCircuit` is defined. It is in `qiskit/circuit/quantumcircuit.py`.
`PassManager` is in `qiskit/transpiler/transpiler.py`.
`OptimizeSwapBeforeMeasure` is in `qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py`.

If I import them directly, I might avoid the problematic imports in `qiskit/__init__.py`.

Let's try importing from the specific modules.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nfrom qiskit.circuit import QuantumCircuit\nfrom qiskit.transpiler import PassManager\nfrom qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure\n\ncirc = QuantumCircuit(8, 8)\ncirc.swap(3, 4)\ncirc.swap(6, 7)\ncirc.swap(0, 1)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(3, 4)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(3, 4)\ncirc.swap(3, 4)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(5, 6)\ncirc.measure(range(8), range(8))\nprint(\"Original circuit depth:\", circ.depth())\n\npm = PassManager()\npm.append(OptimizeSwapBeforeMeasure())\noptimized_circ = pm.run(circ)\nprint(\"Optimized circuit depth:\", optimized_circ.depth())\nprint(optimized_circ)\nPY\n"
}
Result of run_command 4,871 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n  import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n  return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n  import pkg_resources\nTraceback (most recent call last):\n  File \"<stdin>\", line 1, in <module>\n  File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n    from qiskit.execute_function import execute  # noqa\n  File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n    from qiskit.compiler import transpile, assemble, schedule\n  File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n    from .transpiler import transpile\n  File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n    from qiskit.transpiler.passes import ApplyLayout\n  File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n    from .layout import SetLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n    from .sabre_layout import SabreLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n    from qiskit.transpiler.passes.routing import SabreSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n    from .stochastic_swap import StochasticSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n    from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
  "details": {
    "stdout": "",
    "stderr": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n  import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n  return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n  import pkg_resources\nTraceback (most recent call last):\n  File \"<stdin>\", line 1, in <module>\n  File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n    from qiskit.execute_function import execute  # noqa\n  File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n    from qiskit.compiler import transpile, assemble, schedule\n  File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n    from .transpiler import transpile\n  File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n    from qiskit.transpiler.passes import ApplyLayout\n  File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n    from .layout import SetLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n    from .sabre_layout import SabreLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n    from qiskit.transpiler.passes.routing import SabreSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n    from .stochastic_swap import StochasticSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n    from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
    "exit_code": 1
  }
}
Generated tokens 608 tokens · stopped: STOP
I got a `ModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'`. This seems to be an environment issue with some cythonized modules. However, I only need `OptimizeSwapBeforeMeasure` and `QuantumCircuit` and `PassManager`. The error happens during `from qiskit import QuantumCircuit`. Let's see where `QuantumCircuit` is defined. It is in `qiskit/circuit/quantumcircuit.py`. `PassManager` is in `qiskit/transpiler/transpiler.py`. `OptimizeSwapBeforeMeasure` is in `qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py`. If I import them directly, I might avoid the problematic imports in `qiskit/__init__.py`. Let's try importing from the specific modules. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' from qiskit.circuit import QuantumCircuit from qiskit.transpiler import PassManager from qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure circ = QuantumCircuit(8, 8) circ.swap(3, 4) circ.swap(6, 7) circ.swap(0, 1) circ.swap(6, 7) circ.swap(4, 5) circ.swap(0, 1) circ.swap(5, 6) circ.swap(3, 4) circ.swap(1, 2) circ.swap(6, 7) circ.swap(4, 5) circ.swap(2, 3) circ.swap(0, 1) circ.swap(5, 6) circ.swap(1, 2) circ.swap(6, 7) circ.swap(4, 5) circ.swap(2, 3) circ.swap(3, 4) circ.swap(3, 4) circ.swap(5, 6) circ.swap(1, 2) circ.swap(4, 5) circ.swap(2, 3) circ.swap(5, 6) circ.measure(range(8), range(8)) print("Original circuit depth:", circ.depth()) pm = PassManager() pm.append(OptimizeSwapBeforeMeasure()) optimized_circ = pm.run(circ) print("Optimized circuit depth:", optimized_circ.depth()) print(optimized_circ) PY <|"|>}<tool_call|><|tool_response>
Turn 5at 185 s278 tokens out12,235 prompt tokens
It seems `PassManager` import is also triggering the issue because it's in `qiskit/transpiler/transpiler.py` which might be importing `qiskit.transpiler.passes` which imports `ApplyLayout` etc.

Wait, `PassManager` is actually in `qiskit/transpiler/transpiler.py`. Let me check `qiskit/transpiler/transpiler.py`.

Actually, I can just use the pass directly on the DAG if I don't want to use `PassManager`.
`OptimizeSwapBeforeMeasure` is a `TransformationPass`. I can call its `run` method on a DAG.

Let's try a simpler reproduction without using `PassManager` if possible, or try to find where `PassManager` is and if I can avoid the broken imports.

Wait, if I use `pytest`, maybe the environment is set up differently? No, the environment is the same.

Let's try to run the existing tests for `OptimizeSwapBeforeMeasure` to see if they pass.
TOOL CALL · run_command
{
  "command": "pytest test/python/transpiler/test_optimize_swap_before_measure.py -q --tb=short --no-header"
}
Result of run_command 7,427 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "\n==================================== ERRORS ====================================\n_ ERROR collecting test/python/transpiler/test_optimize_swap_before_measure.py _\nImportError while importing test module '/workspace/test/python/transpiler/test_optimize_swap_before_measure.py'.\nHint: make sure your test modules/packages have valid Python names.\nTraceback:\n/usr/local/lib/python3.10/importlib/__init__.py:126: in import_module\n    return _bootstrap._gcd_import(name[level:], package, level)\ntest/__init__.py:16: in <module>\n    from qiskit.test.utils import generate_cases\nqiskit/__init__.py:53: in <module>\n    from qiskit.execute_function import execute  # noqa\nqiskit/execute_function.py:24: in <module>\n    from qiskit.compiler import transpile, assemble, schedule\nqiskit/compiler/__init__.py:34: in <module>\n    from .transpiler import transpile\nqiskit/compiler/transpiler.py:35: in <module>\n    from qiskit.transpiler.passes import ApplyLayout\nqiskit/transpiler/passes/__init__.py:126: in <module>\n    from .layout import SetLayout\nqiskit/transpiler/passes/layout/__init__.py:19: in <module>\n    from .sabre_layout import SabreLayout\nqiskit/transpiler/passes/layout/sabre_layout.py:24: in <module>\n    from qiskit.transpiler.passes.routing import SabreSwap\nqiskit/transpiler/passes/routing/__init__.py:18: in <module>\n    from .stochastic_swap import StochasticSwap\nqiskit/transpiler/passes/routing/stochastic_swap.py:27: in <module>\n    from .cython.stochastic_swap.utils import nlayout_from_layout\nE   ModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n=============================== warnings summary ===============================\nqiskit/circuit/equivalence.py:18\n  /workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n    import retworkx as rx\n\nqiskit/quantum_info/operators/operator.py:424\n  /workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n    return Operator(np.array(instruction, dtype=complex))\n\nqiskit/version.py:20\n  /workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n    import pkg_resources\n\n../usr/local/lib/python3.10/site-packages/pkg_resources/__init__.py:3146\n  /usr/local/lib/python3.10/site-packages/pkg_resources/__init__.py:3146: DeprecationWarning: Deprecated call to `pkg_resources.declare_namespace('sphinxcontrib')`.\n  Implementing implicit namespace packages (as specified in PEP 420) is preferred to `pkg_resources.declare_namespace`. See https://setuptools.pypa.io/en/latest/references/keywords.html#keyword-namespace-packages\n    declare_namespace(pkg)\n\n-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html\n=========================== short test summary info ============================\nERROR test/python/transpiler/test_optimize_swap_before_measure.py\n!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!\n4 warnings, 1 error in 2.14s\n",
  "details": {
    "stdout": "\n==================================== ERRORS ====================================\n_ ERROR collecting test/python/transpiler/test_optimize_swap_before_measure.py _\nImportError while importing test module '/workspace/test/python/transpiler/test_optimize_swap_before_measure.py'.\nHint: make sure your test modules/packages have valid Python names.\nTraceback:\n/usr/local/lib/python3.10/importlib/__init__.py:126: in import_module\n    return _bootstrap._gcd_import(name[level:], package, level)\ntest/__init__.py:16: in <module>\n    from qiskit.test.utils import generate_cases\nqiskit/__init__.py:53: in <module>\n    from qiskit.execute_function import execute  # noqa\nqiskit/execute_function.py:24: in <module>\n    from qiskit.compiler import transpile, assemble, schedule\nqiskit/compiler/__init__.py:34: in <module>\n    from .transpiler import transpile\nqiskit/compiler/transpiler.py:35: in <module>\n    from qiskit.transpiler.passes import ApplyLayout\nqiskit/transpiler/passes/__init__.py:126: in <module>\n    from .layout import SetLayout\nqiskit/transpiler/passes/layout/__init__.py:19: in <module>\n    from .sabre_layout import SabreLayout\nqiskit/transpiler/passes/layout/sabre_layout.py:24: in <module>\n    from qiskit.transpiler.passes.routing import SabreSwap\nqiskit/transpiler/passes/routing/__init__.py:18: in <module>\n    from .stochastic_swap import StochasticSwap\nqiskit/transpiler/passes/routing/stochastic_swap.py:27: in <module>\n    from .cython.stochastic_swap.utils import nlayout_from_layout\nE   ModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n=============================== warnings summary ===============================\nqiskit/circuit/equivalence.py:18\n  /workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n    import retworkx as rx\n\nqiskit/quantum_info/operators/operator.py:424\n  /workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n    return Operator(np.array(instruction, dtype=complex))\n\nqiskit/version.py:20\n  /workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n    import pkg_resources\n\n../usr/local/lib/python3.10/site-packages/pkg_resources/__init__.py:3146\n  /usr/local/lib/python3.10/site-packages/pkg_resources/__init__.py:3146: DeprecationWarning: Deprecated call to `pkg_resources.declare_namespace('sphinxcontrib')`.\n  Implementing implicit namespace packages (as specified in PEP 420) is preferred to `pkg_resources.declare_namespace`. See https://setuptools.pypa.io/en/latest/references/keywords.html#keyword-namespace-packages\n    declare_namespace(pkg)\n\n-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html\n=========================== short test summary info ============================\nERROR test/python/transpiler/test_optimize_swap_before_measure.py\n!!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!\n4 warnings, 1 error in 2.14s\n",
    "stderr": "",
    "exit_code": 2
  }
}
Generated tokens 278 tokens · stopped: STOP
It seems `PassManager` import is also triggering the issue because it's in `qiskit/transpiler/transpiler.py` which might be importing `qiskit.transpiler.passes` which imports `ApplyLayout` etc. Wait, `PassManager` is actually in `qiskit/transpiler/transpiler.py`. Let me check `qiskit/transpiler/transpiler.py`. Actually, I can just use the pass directly on the DAG if I don't want to use `PassManager`. `OptimizeSwapBeforeMeasure` is a `TransformationPass`. I can call its `run` method on a DAG. Let's try a simpler reproduction without using `PassManager` if possible, or try to find where `PassManager` is and if I can avoid the broken imports. Wait, if I use `pytest`, maybe the environment is set up differently? No, the environment is the same. Let's try to run the existing tests for `OptimizeSwapBeforeMeasure` to see if they pass. <channel|><|tool_call>call:run_command{command:<|"|>pytest test/python/transpiler/test_optimize_swap_before_measure.py -q --tb=short --no-header<|"|>}<tool_call|><|tool_response>
Turn 6at 224 s704 tokens out14,778 prompt tokens
This `ModuleNotFoundError` is very strange. It seems like a broken installation in the environment.
But I must work within this environment.

If I can't import `qiskit`, I can't run the tests or the reproduction script.
Wait, the error is in `qiskit.transpiler.passes.routing.stochastic_swap`.
I am only interested in `qiskit.transpiler.passes.optimization.optimize_swap_before_measure`.

If I avoid importing `qiskit` (the package) and import from the modules directly, maybe I can avoid the broken dependency.

Let's try this again, but avoid any import that might lead to `qiskit.transpiler.passes`.
Wait, `PassManager` is in `qiskit/transpiler/transpiler.py`, and it imports `qiskit.transpiler.passes`.

Let's try to import `DAGCircuit` and `QuantumCircuit` and `OptimizeSwapBeforeMeasure` and avoid `PassManager`.
I can convert a `QuantumCircuit` to a `DAGCircuit` using `circuit_to_dag`.
TOOL CALL · run_command
{
  "command": "python3 - <<'PY'\nfrom qiskit.circuit import QuantumCircuit\nfrom qiskit.converters.circuit_to_dag import circuit_to_dag\nfrom qiskit.converters.dag_to_circuit import dag_to_circuit\nfrom qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure\n\ncirc = QuantumCircuit(8, 8)\ncirc.swap(3, 4)\ncirc.swap(6, 7)\ncirc.swap(0, 1)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(3, 4)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(0, 1)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(6, 7)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(3, 4)\ncirc.swap(3, 4)\ncirc.swap(5, 6)\ncirc.swap(1, 2)\ncirc.swap(4, 5)\ncirc.swap(2, 3)\ncirc.swap(5, 6)\ncirc.measure(range(8), range(8))\nprint(\"Original circuit depth:\", circ.depth())\n\ndag = circuit_to_dag(circ)\npass_ = OptimizeSwapBeforeMeasure()\noptimized_dag = pass_.run(dag)\noptimized_circ = dag_to_circuit(optimized_dag)\nprint(\"Optimized circuit depth:\", optimized_circ.depth())\nprint(optimized_circ)\nPY\n"
}
Result of run_command 4,871 characters
{
  "status": "error",
  "error_type": "CommandError",
  "error_message": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n  import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n  return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n  import pkg_resources\nTraceback (most recent call last):\n  File \"<stdin>\", line 1, in <module>\n  File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n    from qiskit.execute_function import execute  # noqa\n  File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n    from qiskit.compiler import transpile, assemble, schedule\n  File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n    from .transpiler import transpile\n  File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n    from qiskit.transpiler.passes import ApplyLayout\n  File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n    from .layout import SetLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n    from .sabre_layout import SabreLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n    from qiskit.transpiler.passes.routing import SabreSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n    from .stochastic_swap import StochasticSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n    from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
  "details": {
    "stdout": "",
    "stderr": "/workspace/qiskit/circuit/equivalence.py:18: DeprecationWarning: The retworkx package is deprecated and has been renamed to rustworkx. Rustworkx is a drop-in replacement and can be used by replacing `import retworkx` with import `rustworkx`. \n  import retworkx as rx\n/workspace/qiskit/quantum_info/operators/operator.py:424: DeprecationWarning: __array__ implementation doesn't accept a copy keyword, so passing copy=False failed. __array__ must implement 'dtype' and 'copy' keyword arguments. To learn more, see the migration guide https://numpy.org/devdocs/numpy_2_0_migration_guide.html#adapting-to-changes-in-the-copy-keyword\n  return Operator(np.array(instruction, dtype=complex))\n/workspace/qiskit/version.py:20: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.\n  import pkg_resources\nTraceback (most recent call last):\n  File \"<stdin>\", line 1, in <module>\n  File \"/workspace/qiskit/__init__.py\", line 53, in <module>\n    from qiskit.execute_function import execute  # noqa\n  File \"/workspace/qiskit/execute_function.py\", line 24, in <module>\n    from qiskit.compiler import transpile, assemble, schedule\n  File \"/workspace/qiskit/compiler/__init__.py\", line 34, in <module>\n    from .transpiler import transpile\n  File \"/workspace/qiskit/compiler/transpiler.py\", line 35, in <module>\n    from qiskit.transpiler.passes import ApplyLayout\n  File \"/workspace/qiskit/transpiler/passes/__init__.py\", line 126, in <module>\n    from .layout import SetLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/__init__.py\", line 19, in <module>\n    from .sabre_layout import SabreLayout\n  File \"/workspace/qiskit/transpiler/passes/layout/sabre_layout.py\", line 24, in <module>\n    from qiskit.transpiler.passes.routing import SabreSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/__init__.py\", line 18, in <module>\n    from .stochastic_swap import StochasticSwap\n  File \"/workspace/qiskit/transpiler/passes/routing/stochastic_swap.py\", line 27, in <module>\n    from .cython.stochastic_swap.utils import nlayout_from_layout\nModuleNotFoundError: No module named 'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'\n",
    "exit_code": 1
  }
}
Generated tokens 704 tokens · stopped: STOP
This `ModuleNotFoundError` is very strange. It seems like a broken installation in the environment. But I must work within this environment. If I can't import `qiskit`, I can't run the tests or the reproduction script. Wait, the error is in `qiskit.transpiler.passes.routing.stochastic_swap`. I am only interested in `qiskit.transpiler.passes.optimization.optimize_swap_before_measure`. If I avoid importing `qiskit` (the package) and import from the modules directly, maybe I can avoid the broken dependency. Let's try this again, but avoid any import that might lead to `qiskit.transpiler.passes`. Wait, `PassManager` is in `qiskit/transpiler/transpiler.py`, and it imports `qiskit.transpiler.passes`. Let's try to import `DAGCircuit` and `QuantumCircuit` and `OptimizeSwapBeforeMeasure` and avoid `PassManager`. I can convert a `QuantumCircuit` to a `DAGCircuit` using `circuit_to_dag`. <channel|><|tool_call>call:run_command{command:<|"|>python3 - <<'PY' from qiskit.circuit import QuantumCircuit from qiskit.converters.circuit_to_dag import circuit_to_dag from qiskit.converters.dag_to_circuit import dag_to_circuit from qiskit.transpiler.passes.optimization.optimize_swap_before_measure import OptimizeSwapBeforeMeasure circ = QuantumCircuit(8, 8) circ.swap(3, 4) circ.swap(6, 7) circ.swap(0, 1) circ.swap(6, 7) circ.swap(4, 5) circ.swap(0, 1) circ.swap(5, 6) circ.swap(3, 4) circ.swap(1, 2) circ.swap(6, 7) circ.swap(4, 5) circ.swap(2, 3) circ.swap(0, 1) circ.swap(5, 6) circ.swap(1, 2) circ.swap(6, 7) circ.swap(4, 5) circ.swap(2, 3) circ.swap(3, 4) circ.swap(3, 4) circ.swap(5, 6) circ.swap(1, 2) circ.swap(4, 5) circ.swap(2, 3) circ.swap(5, 6) circ.measure(range(8), range(8)) print("Original circuit depth:", circ.depth()) dag = circuit_to_dag(circ) pass_ = OptimizeSwapBeforeMeasure() optimized_dag = pass_.run(dag) optimized_circ = dag_to_circuit(optimized_dag) print("Optimized circuit depth:", optimized_circ.depth()) print(optimized_circ) PY <|"|>}<tool_call|><|tool_response>
Turn 7at 291 s370 tokens out9,446 prompt tokens
Wait, why is it importing `qiskit/__init__.py`?
I am importing `qiskit.circuit`, `qiskit.converters.circuit_to_dag`, etc.
Inside `qiskit/__init__.py`, there are imports that eventually lead to the failure.

Wait, if I have the `qiskit` directory in the current working directory, importing `qiskit.circuit` will use the `qiskit` directory in the current directory, and it will execute `qiskit/__init__.py`.

I can try to bypass this by adding `/workspace/qiskit` to sys.path and importing from there, but it still uses the same directories.

Actually, if I import from `qiskit.circuit`, it should only import `qiskit/__init__.py` if it's a package.
Wait, `qiskit/__init__.py` is being executed.

Let's try to see how to avoid executing `qiskit/__init__.py`.
Maybe if I import using the full path to the module? No, that's not how Python works.

What if I move the `qiskit` folder to another place? No, the instructions say I can't do that.

Actually, if I can't run the code, I have to rely on reading the code and analyzing the bug.

The bug is that `OptimizeSwapBeforeMeasure` is not removing all swaps before measure that it should.

Let's read the code of `OptimizeSwapBeforeMeasure`.
TOOL CALL · read_file
{
  "filepath": "qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py"
}
Result of read_file 3,047 characters
{
  "status": "ok",
  "filepath": "qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py",
  "content": "# This code is part of Qiskit.\n#\n# (C) Copyright IBM 2017, 2019.\n#\n# This code is licensed under the Apache License, Version 2.0. You may\n# obtain a copy of this license in the LICENSE.txt file in the root directory\n# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.\n#\n# Any modifications or derivative works of this code must retain this\n# copyright notice, and modified files need to carry a notice indicating\n# that they have been altered from the originals.\n\n\n\"\"\"Remove the swaps followed by measurement (and adapt the measurement).\"\"\"\n\nfrom qiskit.circuit import Measure\nfrom qiskit.circuit.library.standard_gates import SwapGate\nfrom qiskit.transpiler.basepasses import TransformationPass\nfrom qiskit.dagcircuit import DAGCircuit\n\n\nclass OptimizeSwapBeforeMeasure(TransformationPass):\n    \"\"\"Remove the swaps followed by measurement (and adapt the measurement).\n\n    Transpiler pass to remove swaps in front of measurements by re-targeting\n    the classical bit of the measure instruction.\n    \"\"\"\n\n    def run(self, dag):\n        \"\"\"Run the OptimizeSwapBeforeMeasure pass on `dag`.\n\n        Args:\n            dag (DAGCircuit): the DAG to be optimized.\n\n        Returns:\n            DAGCircuit: the optimized DAG.\n        \"\"\"\n        swaps = dag.op_nodes(SwapGate)\n        for swap in swaps:\n            final_successor = []\n            for successor in dag.successors(swap):\n                final_successor.append(successor.type == 'out' or (successor.type == 'op' and\n                                                                   successor.op.name == 'measure'))\n            if all(final_successor):\n                # the node swap needs to be removed and, if a measure follows, needs to be adapted\n                swap_qargs = swap.qargs\n                measure_layer = DAGCircuit()\n                for qreg in dag.qregs.values():\n                    measure_layer.add_qreg(qreg)\n                for creg in dag.cregs.values():\n                    measure_layer.add_creg(creg)\n                for successor in list(dag.successors(swap)):\n                    if successor.type == 'op' and successor.op.name == 'measure':\n                        # replace measure node with a new one, where qargs is set with the \"other\"\n                        # swap qarg.\n                        dag.remove_op_node(successor)\n                        old_measure_qarg = successor.qargs[0]\n                        new_measure_qarg = swap_qargs[swap_qargs.index(old_measure_qarg) - 1]\n                        measure_layer.apply_operation_back(Measure(), [new_measure_qarg],\n                                                           [successor.cargs[0]])\n                dag.compose(measure_layer)\n                dag.remove_op_node(swap)\n        return dag",
  "start_line": 1,
  "end_line": 63,
  "total_lines": 63,
  "is_truncated": false
}
Generated tokens 370 tokens · stopped: STOP
Wait, why is it importing `qiskit/__init__.py`? I am importing `qiskit.circuit`, `qiskit.converters.circuit_to_dag`, etc. Inside `qiskit/__init__.py`, there are imports that eventually lead to the failure. Wait, if I have the `qiskit` directory in the current working directory, importing `qiskit.circuit` will use the `qiskit` directory in the current directory, and it will execute `qiskit/__init__.py`. I can try to bypass this by adding `/workspace/qiskit` to sys.path and importing from there, but it still uses the same directories. Actually, if I import from `qiskit.circuit`, it should only import `qiskit/__init__.py` if it's a package. Wait, `qiskit/__init__.py` is being executed. Let's try to see how to avoid executing `qiskit/__init__.py`. Maybe if I import using the full path to the module? No, that's not how Python works. What if I move the `qiskit` folder to another place? No, the instructions say I can't do that. Actually, if I can't run the code, I have to rely on reading the code and analyzing the bug. The bug is that `OptimizeSwapBeforeMeasure` is not removing all swaps before measure that it should. Let's read the code of `OptimizeSwapBeforeMeasure`. <channel|><|tool_call>call:read_file{filepath:<|"|>qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py<|"|>}<tool_call|><|tool_response>

Patch, tests and logs

Final code change Included
Test output Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Test errors Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Test report (JUnit) Missing
Not saved for this rollout. Nothing has been inferred or reconstructed.
Agent log Included
  [   0.0s] 📋 System Prompt: You are a principal Python software engineer resolving a repository issue in `/workspace`.
  [   0.0s] 🎯 Task Prompt: You are evaluating a software engineering task for repository Qiskit/qiskit-terra.
  [  16.4s] 💭 (586 chars) "The user wants to optimize the `OptimizeSwapBeforeMeasure` pass in Qiskit Terra.
The current implementation of `Optimize..."
  [  16.4s] 🔧 run_command grep -rn --include="*.py" "OptimizeSwapBeforeMeasure" .
  [  16.4s]   → ./qiskit/transpiler/passes/optimization/__init__.py:22:from .optimize_swap_before_measure import 
OptimizeSwapBeforeMeasu
  [  20.9s] 💭 (212 chars) "The implementation is in 
`qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py`.
The tests are in `test..."
  [  20.9s] 📖 read_file (qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py)
  [  21.0s]   ✓ {'status': 'ok', 'filepath': 'qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py', 
'content': '# This…
  [  88.6s] 💭 (1823 chars) "The current logic is:
1. Iterate over all `SwapGate` op nodes.
2. For each swap, check if all its successors are either ..."
  [  88.6s] 🔧 run_command (46 lines) python3 - <<'PY'
  [  91.3s]   → error (exit 0): 
  [ 123.7s] 💭 (722 chars) "I got a `ModuleNotFoundError: No module named 
'qiskit.transpiler.passes.routing.cython.stochastic_swap.utils'`.
This see..."
  [ 123.7s] 🔧 run_command (40 lines) python3 - <<'PY'
  [ 125.3s]   → error (exit 0): 
  [ 145.6s] 💭 (844 chars) "It seems `PassManager` import is also triggering the issue because it's in 
`qiskit/transpiler/transpiler.py` which might..."
  [ 145.6s] 🔧 run_command pytest test/python/transpiler/test_optimize_swap_before_measure.py -q --tb=short
  [ 148.6s]   → error (exit 0): 
  [ 184.8s] 💭 (893 chars) "This `ModuleNotFoundError` is very strange. It seems like a broken installation in the 
environment.
But I must work with..."
  [ 184.8s] 🔧 run_command (42 lines) python3 - <<'PY'
  [ 186.4s]   → error (exit 0): 
  [ 252.1s] 💭 (1188 chars) "Wait, why is it importing `qiskit/__init__.py`?
I am importing `qiskit.circuit`, `qiskit.converters.circuit_to_dag`, etc..."
  [ 252.1s] 📖 read_file (qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py)
  [ 252.2s]   ✓ {'status': 'ok', 'filepath': 'qiskit/transpiler/passes/optimization/optimize_swap_before_measure.py', 
'content': '# This…
Native result row
{
  "agent_error": "Agent exceeded session timeout (7.5 min)",
  "duration_seconds": 491.49,
  "error": "Empty agent patch",
  "grade": {
    "error": "Empty agent patch",
    "resolved": false,
    "strict_clean_patch": false,
    "test_exit_code": -1
  },
  "instance_id": "qiskit__qiskit-terra-5833",
  "pass_idx": 0,
  "patch_chars": 0,
  "phase1_seconds": 491.49,
  "repo": "Qiskit/qiskit-terra",
  "request_log_path": "/kaggle-root/working/r31/rollouts_X/requests/qiskit__qiskit-terra-5833__p0__r7.jsonl",
  "resolved": false,
  "rollout_idx": 7,
  "run_key": "qiskit__qiskit-terra-5833__p0__r7",
  "strict_clean_patch": false,
  "tool_calls": 7,
  "total_llm_calls": 7,
  "trace_path": "/kaggle-root/working/r31/rollouts_X/traces/trace_qiskit__qiskit-terra-5833__p0__r7.json"
}