{"abstract":"Asking for qubit 2 of a two-qubit state returns {\"0\": 1.0} instead of the \"bad-qubit\" error.","category":"Quantum circuit simulation","checks":6,"contract":"Input [n, amps, qubits]; amps are 2**n [re, im] pairs (qubit 0 = LSB), possibly unnormalized. Return the marginal outcome distribution over the listed qubits as {bitstring: probability} where the first listed qubit is the rightmost character, probabilities are normalized by the total squared norm, rounded to 6 decimals after summation, and zero entries are omitted. Errors: \"bad-length\", \"duplicate-qubit\", \"bad-qubit\", \"zero-state\" (total squared norm <= 1e-12).","evaluation_group":"w2-quantum_circuit_simulation-marginal-distribution","failed_approach":"The attempted repair compares against the Hilbert dimension 1 << n, which still admits nonexistent qubits.","family":"w2-quantum_circuit_simulation-marginal-distribution-qubit-range-bound","id":"FA-90891","implementations":{"attempt":{"sha256":"f0ccdaa678990fe3bc8e58fe68b7d572412fd9954d75ef9b43950810c58291b0","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nN = 1\nobservations = []\ndef solve(x):\n    n, amps, qubits = x\n    if len(amps) != 1 << n:\n        return 'bad-length'\n    if len(set(qubits)) != len(qubits):\n        return 'duplicate-qubit'\n    if any(q < 0 or q >= 1 << n for q in qubits):\n        return 'bad-qubit'\n    total = sum(re * re + im * im for re, im in amps)\n    if total <= 1e-12:\n        return 'zero-state'\n    acc = {}\n    for idx, (a, b) in enumerate(amps):\n        p = a * a + b * b\n        if p == 0:\n            continue\n        key = ''.join('1' if idx >> q & 1 else '0' for q in reversed(qubits))\n        acc[key] = acc.get(key, 0.0) + p\n    out = {}\n    for key in sorted(acc):\n        v = round(acc[key] / total, 6)\n        if v > 0:\n            out[key] = v\n    return out\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: bell state on both qubits', [2, [[0.707107, 0], [0, 0], [0, 0], [0.707107, 0]], [0, 1]], {'00': 0.5, '11': 0.5}], ['control: reversed qubit list', [2, [[0, 0], [1, 0], [0, 0], [0, 0]], [1, 0]], {'10': 1.0}], ['control: single qubit marginal of |01>', [2, [[0, 0], [1, 0], [0, 0], [0, 0]], [1]], {'0': 1.0}], ['control: negative qubit index', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [-1]], 'bad-qubit'], ['control: wrong amplitude count', [2, [[1, 0], [0, 0]], [0]], 'bad-length']], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: duplicate qubits', [2, [[0.6, 0], [0, 0.8], [0, 0], [0, 0]], [0, 0]], 'duplicate-qubit'], ['control: wrong amplitude count', [2, [[1, 0], [0, 0]], [0]], 'bad-length'], ['control: all-zero state', [1, [[0, 0], [0, 0]], [0]], 'zero-state'], ['control: tiny but valid state', [1, [[0.0001, 0], [0, 0.0002]], [0]], {'0': 0.2, '1': 0.8}], ['control: single qubit marginal of |01>', [2, [[0, 0], [1, 0], [0, 0], [0, 0]], [1]], {'0': 1.0}]], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: unnormalized pair', [1, [[3, 0], [0, 4]], [0]], {'0': 0.36, '1': 0.64}], ['control: random state 0', [2, [[0.0, 0.0], [0.282, -0.043], [-0.278, 0.017], [0.0, 0.0]], [0, 1]], {'01': 0.511954, '10': 0.488046}], ['control: random state 1', [2, [[0.129, 0.125], [0.0, 0.0], [0.0, 0.0], [0.0, 0.0]], [1, 0]], {'00': 1.0}], ['control: random state 2', [1, [[0.541, -0.923], [-0.479, -0.646]], [0]], {'0': 0.638959, '1': 0.361041}], ['control: negative qubit index', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [-1]], 'bad-qubit']], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: random state 3', [2, [[0.379, 0.308], [-0.129, -0.524], [0.79, -0.299], [-0.403, -0.327]], [0, 1]], {'00': 0.157683, '01': 0.192532, '10': 0.471717, '11': 0.178068}], ['control: random state 4', [1, [[-0.217, 0.525], [-0.308, -0.181]], [0]], {'0': 0.716602, '1': 0.283398}], ['control: random state 5', [2, [[0.175, -0.97], [0.914, 0.939], [-0.22, 0.959], [-0.79, 0.837]], [1]], {'0': 0.539737, '1': 0.460263}], ['control: random state 6', [3, [[-0.119, 0.092], [0.264, -0.223], [-0.189, 0.034], [-0.22, -0.267], [-0.291, -0.092], [0.09, -0.02], [0.062, -0.284], [-0.239, 0.039]], [2]], {'0': 0.54953, '1': 0.45047}], ['control: duplicate qubits', [2, [[0.6, 0], [0, 0.8], [0, 0], [0, 0]], [0, 0]], 'duplicate-qubit']], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: random state 7', [1, [[0.725, -0.825], [-0.233, -0.266]], [0]], {'0': 0.906073, '1': 0.093927}], ['control: random state 8', [2, [[0.258, -0.148], [-0.044, -0.154], [0.09, 0.21], [0.28, 0.265]], [0]], {'0': 0.446643, '1': 0.553357}], ['control: random state 9', [1, [[-0.25, -0.175], [0.0, 0.0]], [0]], {'0': 1.0}], ['control: random state 10', [3, [[-0.064, 0.212], [0.264, -0.114], [-0.15, -0.24], [0.031, 0.141], [0.037, -0.002], [0.023, -0.229], [0.193, -0.153], [0.251, 0.097]], [0, 1, 2]], {'000': 0.116738, '001': 0.196846, '010': 0.190676, '011': 0.049614, '100': 0.003268, '101': 0.126094, '110': 0.144395, '111': 0.17237}], ['control: wrong amplitude count', [2, [[1, 0], [0, 0]], [0]], 'bad-length']]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"f53e89cff86f48b1110c5251c07ef77786bae3554a31e76244b72b9a7902433e","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nN = 1\nobservations = []\ndef solve(x):\n    n, amps, qubits = x\n    if len(amps) != 1 << n:\n        return 'bad-length'\n    if len(set(qubits)) != len(qubits):\n        return 'duplicate-qubit'\n    if any(q < 0 or q > n for q in qubits):\n        return 'bad-qubit'\n    total = sum(re * re + im * im for re, im in amps)\n    if total <= 1e-12:\n        return 'zero-state'\n    acc = {}\n    for idx, (a, b) in enumerate(amps):\n        p = a * a + b * b\n        if p == 0:\n            continue\n        key = ''.join('1' if idx >> q & 1 else '0' for q in reversed(qubits))\n        acc[key] = acc.get(key, 0.0) + p\n    out = {}\n    for key in sorted(acc):\n        v = round(acc[key] / total, 6)\n        if v > 0:\n            out[key] = v\n    return out\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: bell state on both qubits', [2, [[0.707107, 0], [0, 0], [0, 0], [0.707107, 0]], [0, 1]], {'00': 0.5, '11': 0.5}], ['control: reversed qubit list', [2, [[0, 0], [1, 0], [0, 0], [0, 0]], [1, 0]], {'10': 1.0}], ['control: single qubit marginal of |01>', [2, [[0, 0], [1, 0], [0, 0], [0, 0]], [1]], {'0': 1.0}], ['control: negative qubit index', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [-1]], 'bad-qubit'], ['control: wrong amplitude count', [2, [[1, 0], [0, 0]], [0]], 'bad-length']], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: duplicate qubits', [2, [[0.6, 0], [0, 0.8], [0, 0], [0, 0]], [0, 0]], 'duplicate-qubit'], ['control: wrong amplitude count', [2, [[1, 0], [0, 0]], [0]], 'bad-length'], ['control: all-zero state', [1, [[0, 0], [0, 0]], [0]], 'zero-state'], ['control: tiny but valid state', [1, [[0.0001, 0], [0, 0.0002]], [0]], {'0': 0.2, '1': 0.8}], ['control: single qubit marginal of |01>', [2, [[0, 0], [1, 0], [0, 0], [0, 0]], [1]], {'0': 1.0}]], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: unnormalized pair', [1, [[3, 0], [0, 4]], [0]], {'0': 0.36, '1': 0.64}], ['control: random state 0', [2, [[0.0, 0.0], [0.282, -0.043], [-0.278, 0.017], [0.0, 0.0]], [0, 1]], {'01': 0.511954, '10': 0.488046}], ['control: random state 1', [2, [[0.129, 0.125], [0.0, 0.0], [0.0, 0.0], [0.0, 0.0]], [1, 0]], {'00': 1.0}], ['control: random state 2', [1, [[0.541, -0.923], [-0.479, -0.646]], [0]], {'0': 0.638959, '1': 0.361041}], ['control: negative qubit index', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [-1]], 'bad-qubit']], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: random state 3', [2, [[0.379, 0.308], [-0.129, -0.524], [0.79, -0.299], [-0.403, -0.327]], [0, 1]], {'00': 0.157683, '01': 0.192532, '10': 0.471717, '11': 0.178068}], ['control: random state 4', [1, [[-0.217, 0.525], [-0.308, -0.181]], [0]], {'0': 0.716602, '1': 0.283398}], ['control: random state 5', [2, [[0.175, -0.97], [0.914, 0.939], [-0.22, 0.959], [-0.79, 0.837]], [1]], {'0': 0.539737, '1': 0.460263}], ['control: random state 6', [3, [[-0.119, 0.092], [0.264, -0.223], [-0.189, 0.034], [-0.22, -0.267], [-0.291, -0.092], [0.09, -0.02], [0.062, -0.284], [-0.239, 0.039]], [2]], {'0': 0.54953, '1': 0.45047}], ['control: duplicate qubits', [2, [[0.6, 0], [0, 0.8], [0, 0], [0, 0]], [0, 0]], 'duplicate-qubit']], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: random state 7', [1, [[0.725, -0.825], [-0.233, -0.266]], [0]], {'0': 0.906073, '1': 0.093927}], ['control: random state 8', [2, [[0.258, -0.148], [-0.044, -0.154], [0.09, 0.21], [0.28, 0.265]], [0]], {'0': 0.446643, '1': 0.553357}], ['control: random state 9', [1, [[-0.25, -0.175], [0.0, 0.0]], [0]], {'0': 1.0}], ['control: random state 10', [3, [[-0.064, 0.212], [0.264, -0.114], [-0.15, -0.24], [0.031, 0.141], [0.037, -0.002], [0.023, -0.229], [0.193, -0.153], [0.251, 0.097]], [0, 1, 2]], {'000': 0.116738, '001': 0.196846, '010': 0.190676, '011': 0.049614, '100': 0.003268, '101': 0.126094, '110': 0.144395, '111': 0.17237}], ['control: wrong amplitude count', [2, [[1, 0], [0, 0]], [0]], 'bad-length']]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"5d863641f6907701ebede3af507c6a598ebdc41302ed3d47ccce8d077ce722c3","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nN = 1\nobservations = []\ndef solve(x):\n    n, amps, qubits = x\n    if len(amps) != 1 << n:\n        return 'bad-length'\n    if len(set(qubits)) != len(qubits):\n        return 'duplicate-qubit'\n    if any(q < 0 or q >= n for q in qubits):\n        return 'bad-qubit'\n    total = sum(re * re + im * im for re, im in amps)\n    if total <= 1e-12:\n        return 'zero-state'\n    acc = {}\n    for idx, (a, b) in enumerate(amps):\n        p = a * a + b * b\n        if p == 0:\n            continue\n        key = ''.join('1' if idx >> q & 1 else '0' for q in reversed(qubits))\n        acc[key] = acc.get(key, 0.0) + p\n    out = {}\n    for key in sorted(acc):\n        v = round(acc[key] / total, 6)\n        if v > 0:\n            out[key] = v\n    return out\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: bell state on both qubits', [2, [[0.707107, 0], [0, 0], [0, 0], [0.707107, 0]], [0, 1]], {'00': 0.5, '11': 0.5}], ['control: reversed qubit list', [2, [[0, 0], [1, 0], [0, 0], [0, 0]], [1, 0]], {'10': 1.0}], ['control: single qubit marginal of |01>', [2, [[0, 0], [1, 0], [0, 0], [0, 0]], [1]], {'0': 1.0}], ['control: negative qubit index', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [-1]], 'bad-qubit'], ['control: wrong amplitude count', [2, [[1, 0], [0, 0]], [0]], 'bad-length']], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: duplicate qubits', [2, [[0.6, 0], [0, 0.8], [0, 0], [0, 0]], [0, 0]], 'duplicate-qubit'], ['control: wrong amplitude count', [2, [[1, 0], [0, 0]], [0]], 'bad-length'], ['control: all-zero state', [1, [[0, 0], [0, 0]], [0]], 'zero-state'], ['control: tiny but valid state', [1, [[0.0001, 0], [0, 0.0002]], [0]], {'0': 0.2, '1': 0.8}], ['control: single qubit marginal of |01>', [2, [[0, 0], [1, 0], [0, 0], [0, 0]], [1]], {'0': 1.0}]], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: unnormalized pair', [1, [[3, 0], [0, 4]], [0]], {'0': 0.36, '1': 0.64}], ['control: random state 0', [2, [[0.0, 0.0], [0.282, -0.043], [-0.278, 0.017], [0.0, 0.0]], [0, 1]], {'01': 0.511954, '10': 0.488046}], ['control: random state 1', [2, [[0.129, 0.125], [0.0, 0.0], [0.0, 0.0], [0.0, 0.0]], [1, 0]], {'00': 1.0}], ['control: random state 2', [1, [[0.541, -0.923], [-0.479, -0.646]], [0]], {'0': 0.638959, '1': 0.361041}], ['control: negative qubit index', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [-1]], 'bad-qubit']], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: random state 3', [2, [[0.379, 0.308], [-0.129, -0.524], [0.79, -0.299], [-0.403, -0.327]], [0, 1]], {'00': 0.157683, '01': 0.192532, '10': 0.471717, '11': 0.178068}], ['control: random state 4', [1, [[-0.217, 0.525], [-0.308, -0.181]], [0]], {'0': 0.716602, '1': 0.283398}], ['control: random state 5', [2, [[0.175, -0.97], [0.914, 0.939], [-0.22, 0.959], [-0.79, 0.837]], [1]], {'0': 0.539737, '1': 0.460263}], ['control: random state 6', [3, [[-0.119, 0.092], [0.264, -0.223], [-0.189, 0.034], [-0.22, -0.267], [-0.291, -0.092], [0.09, -0.02], [0.062, -0.284], [-0.239, 0.039]], [2]], {'0': 0.54953, '1': 0.45047}], ['control: duplicate qubits', [2, [[0.6, 0], [0, 0.8], [0, 0], [0, 0]], [0, 0]], 'duplicate-qubit']], [['regression: out of range qubit equals n', [2, [[1, 0], [0, 0], [0, 0], [0, 0]], [2]], 'bad-qubit'], ['control: random state 7', [1, [[0.725, -0.825], [-0.233, -0.266]], [0]], {'0': 0.906073, '1': 0.093927}], ['control: random state 8', [2, [[0.258, -0.148], [-0.044, -0.154], [0.09, 0.21], [0.28, 0.265]], [0]], {'0': 0.446643, '1': 0.553357}], ['control: random state 9', [1, [[-0.25, -0.175], [0.0, 0.0]], [0]], {'0': 1.0}], ['control: random state 10', [3, [[-0.064, 0.212], [0.264, -0.114], [-0.15, -0.24], [0.031, 0.141], [0.037, -0.002], [0.023, -0.229], [0.193, -0.153], [0.251, 0.097]], [0, 1, 2]], {'000': 0.116738, '001': 0.196846, '010': 0.190676, '011': 0.049614, '100': 0.003268, '101': 0.126094, '110': 0.144395, '111': 0.17237}], ['control: wrong amplitude count', [2, [[1, 0], [0, 0]], [0]], 'bad-length']]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"A deterministic bounded teaching model with a stipulated toy contract; amplitudes are rounded to fixed decimals for strict JSON output. It is not a production quantum SDK and claims no standards conformance. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-quantum_circuit_simulation-marginal-distribution-qubit-range-bound","generated_at":"2026-09-29T14:51:30.940241+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Marginal readout distributions are what users compare against hardware counts; ordering or normalization slips mislabel every histogram.","repair":"Reject q >= n (and q < 0).","root_cause":"The range check uses q > n, letting q == n through; the missing bit then reads as 0 everywhere.","sha256":"09669e6abe2d901ca01b7c58b1de8f33e667fe9dadca625d9ba8ff3015f09e23","title":"Marginal accepts qubit index equal to the register width · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":40.85,"exit_code":1,"observations":[{"actual":{"0":1.0},"check":"regression: out of range qubit equals n","expected":"bad-qubit","passed":false},{"actual":{"00":0.5,"11":0.5},"check":"control: bell state on both qubits","expected":{"00":0.5,"11":0.5},"passed":true},{"actual":{"10":1.0},"check":"control: reversed qubit list","expected":{"10":1.0},"passed":true},{"actual":{"0":1.0},"check":"control: single qubit marginal of |01>","expected":{"0":1.0},"passed":true},{"actual":"bad-qubit","check":"control: negative qubit index","expected":"bad-qubit","passed":true},{"actual":"bad-length","check":"control: wrong amplitude count","expected":"bad-length","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: out of range qubit equals n\", \"actual\": {\"0\": 1.0}, \"expected\": \"bad-qubit\", \"passed\": false}, {\"check\": \"control: bell state on both qubits\", \"actual\": {\"00\": 0.5, \"11\": 0.5}, \"expected\": {\"00\": 0.5, \"11\": 0.5}, \"passed\": true}, {\"check\": \"control: reversed qubit list\", \"actual\": {\"10\": 1.0}, \"expected\": {\"10\": 1.0}, \"passed\": true}, {\"check\": \"control: single qubit marginal of |01>\", \"actual\": {\"0\": 1.0}, \"expected\": {\"0\": 1.0}, \"passed\": true}, {\"check\": \"control: negative qubit index\", \"actual\": \"bad-qubit\", \"expected\": \"bad-qubit\", \"passed\": true}, {\"check\": \"control: wrong amplitude count\", \"actual\": \"bad-length\", \"expected\": \"bad-length\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":41.289,"exit_code":1,"observations":[{"actual":{"0":1.0},"check":"regression: out of range qubit equals n","expected":"bad-qubit","passed":false},{"actual":{"00":0.5,"11":0.5},"check":"control: bell state on both qubits","expected":{"00":0.5,"11":0.5},"passed":true},{"actual":{"10":1.0},"check":"control: reversed qubit list","expected":{"10":1.0},"passed":true},{"actual":{"0":1.0},"check":"control: single qubit marginal of |01>","expected":{"0":1.0},"passed":true},{"actual":"bad-qubit","check":"control: negative qubit index","expected":"bad-qubit","passed":true},{"actual":"bad-length","check":"control: wrong amplitude count","expected":"bad-length","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: out of range qubit equals n\", \"actual\": {\"0\": 1.0}, \"expected\": \"bad-qubit\", \"passed\": false}, {\"check\": \"control: bell state on both qubits\", \"actual\": {\"00\": 0.5, \"11\": 0.5}, \"expected\": {\"00\": 0.5, \"11\": 0.5}, \"passed\": true}, {\"check\": \"control: reversed qubit list\", \"actual\": {\"10\": 1.0}, \"expected\": {\"10\": 1.0}, \"passed\": true}, {\"check\": \"control: single qubit marginal of |01>\", \"actual\": {\"0\": 1.0}, \"expected\": {\"0\": 1.0}, \"passed\": true}, {\"check\": \"control: negative qubit index\", \"actual\": \"bad-qubit\", \"expected\": \"bad-qubit\", \"passed\": true}, {\"check\": \"control: wrong amplitude count\", \"actual\": \"bad-length\", \"expected\": \"bad-length\", \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":40.424,"exit_code":0,"observations":[{"actual":"bad-qubit","check":"regression: out of range qubit equals n","expected":"bad-qubit","passed":true},{"actual":{"00":0.5,"11":0.5},"check":"control: bell state on both qubits","expected":{"00":0.5,"11":0.5},"passed":true},{"actual":{"10":1.0},"check":"control: reversed qubit list","expected":{"10":1.0},"passed":true},{"actual":{"0":1.0},"check":"control: single qubit marginal of |01>","expected":{"0":1.0},"passed":true},{"actual":"bad-qubit","check":"control: negative qubit index","expected":"bad-qubit","passed":true},{"actual":"bad-length","check":"control: wrong amplitude count","expected":"bad-length","passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: out of range qubit equals n\", \"actual\": \"bad-qubit\", \"expected\": \"bad-qubit\", \"passed\": true}, {\"check\": \"control: bell state on both qubits\", \"actual\": {\"00\": 0.5, \"11\": 0.5}, \"expected\": {\"00\": 0.5, \"11\": 0.5}, \"passed\": true}, {\"check\": \"control: reversed qubit list\", \"actual\": {\"10\": 1.0}, \"expected\": {\"10\": 1.0}, \"passed\": true}, {\"check\": \"control: single qubit marginal of |01>\", \"actual\": {\"0\": 1.0}, \"expected\": {\"0\": 1.0}, \"passed\": true}, {\"check\": \"control: negative qubit index\", \"actual\": \"bad-qubit\", \"expected\": \"bad-qubit\", \"passed\": true}, {\"check\": \"control: wrong amplitude count\", \"actual\": \"bad-length\", \"expected\": \"bad-length\", \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}