Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_3.0.0_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 3.0.0/package.mo", uses=false) Using package Buildings with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 3.0.0/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo) Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Using package Modelica_StateGraph2 with version 2.0.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo) Running command: translateModel(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull,tolerance=1e-05,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull") translateModel(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull,tolerance=1e-05,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull") [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo:257:38-257:110:writable] Warning: The file was not encoded in UTF-8: "

An important practical aspect of state machines is the abilit...". Defaulting to 7-bit ASCII with unknown characters replaced by '?'. To change encoding when loading a file: loadFile(encoding="ISO-XXXX-YY"). To change it in a package: add a file package.encoding at the top-level. Note: The Modelica Language Specification only allows files encoded in UTF-8. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo:761:36-761:108:writable] Warning: The file was not encoded in UTF-8: "

The Modelica_StateGraph2 library is described in detail in (O...". Defaulting to 7-bit ASCII with unknown characters replaced by '?'. To change encoding when loading a file: loadFile(encoding="ISO-XXXX-YY"). To change it in a package: add a file package.encoding at the top-level. Note: The Modelica Language Specification only allows files encoded in UTF-8. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_StateGraph2 2.0.2/package.mo:1435:36-1435:108:writable] Warning: The file was not encoded in UTF-8: "

Main Authors:

SCode: time 0.1374/0.1392, allocations: 80.84 MB / 0.6706 GB, free: 2.152 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull): time 0.006099/0.1454, allocations: 5.302 MB / 0.6758 GB, free: 12.82 MB / 0.5137 GB Notification: Performance of NFInst.instExpressions: time 0.005725/0.1511, allocations: 4.174 MB / 0.6799 GB, free: 8.633 MB / 0.5137 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003359/0.1515, allocations: 19.88 kB / 0.6799 GB, free: 8.613 MB / 0.5137 GB Notification: Performance of NFTyping.typeComponents: time 0.0015/0.153, allocations: 0.5834 MB / 0.6805 GB, free: 8.027 MB / 0.5137 GB Notification: Performance of NFTyping.typeBindings: time 0.001317/0.1543, allocations: 0.6805 MB / 0.6811 GB, free: 7.344 MB / 0.5137 GB Notification: Performance of NFTyping.typeClassSections: time 0.001257/0.1556, allocations: 0.5494 MB / 0.6817 GB, free: 6.793 MB / 0.5137 GB Notification: Performance of NFFlatten.flatten: time 0.0009998/0.1566, allocations: 1.135 MB / 0.6828 GB, free: 5.652 MB / 0.5137 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0005178/0.1571, allocations: 425.6 kB / 0.6832 GB, free: 5.223 MB / 0.5137 GB Notification: Performance of NFEvalConstants.evaluate: time 0.00039/0.1575, allocations: 458.4 kB / 0.6836 GB, free: 4.773 MB / 0.5137 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0006204/0.1581, allocations: 0.5449 MB / 0.6842 GB, free: 4.227 MB / 0.5137 GB Notification: Performance of NFPackage.collectConstants: time 8.733e-05/0.1582, allocations: 60 kB / 0.6842 GB, free: 4.168 MB / 0.5137 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001087/0.1593, allocations: 0.8381 MB / 0.685 GB, free: 3.328 MB / 0.5137 GB Notification: Performance of NFScalarize.scalarize: time 0.0002489/0.1596, allocations: 315.2 kB / 0.6853 GB, free: 3.02 MB / 0.5137 GB Notification: Performance of NFVerifyModel.verify: time 0.0003281/0.1599, allocations: 421.8 kB / 0.6857 GB, free: 2.605 MB / 0.5137 GB Notification: Performance of NFConvertDAE.convert: time 0.0012/0.1611, allocations: 1.386 MB / 0.6871 GB, free: 1.215 MB / 0.5137 GB Notification: Performance of FrontEnd - DAE generated: time 3.547e-06/0.1612, allocations: 0 / 0.6871 GB, free: 1.215 MB / 0.5137 GB Notification: Performance of FrontEnd: time 1.463e-06/0.1612, allocations: 4 kB / 0.6871 GB, free: 1.211 MB / 0.5137 GB Notification: Performance of Transformations before backend: time 1.016e-05/0.1612, allocations: 0 / 0.6871 GB, free: 1.211 MB / 0.5137 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 179 * Number of variables: 179 Notification: Performance of Generate backend data structure: time 0.001751/0.1629, allocations: 1.137 MB / 0.6882 GB, free: 24 kB / 0.5137 GB Notification: Performance of prepare preOptimizeDAE: time 3.246e-05/0.163, allocations: 8.031 kB / 0.6882 GB, free: 16 kB / 0.5137 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.009063/0.172, allocations: 1.696 MB / 0.6899 GB, free: 14.32 MB / 0.5294 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001202/0.1733, allocations: 0.643 MB / 0.6905 GB, free: 13.63 MB / 0.5294 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.583e-05/0.1733, allocations: 49.67 kB / 0.6905 GB, free: 13.59 MB / 0.5294 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001662/0.1735, allocations: 60.09 kB / 0.6906 GB, free: 13.53 MB / 0.5294 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.004349/0.1778, allocations: 1.89 MB / 0.6924 GB, free: 11.58 MB / 0.5294 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.772e-05/0.1779, allocations: 7.906 kB / 0.6925 GB, free: 11.57 MB / 0.5294 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001106/0.178, allocations: 27.98 kB / 0.6925 GB, free: 11.54 MB / 0.5294 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0003082/0.1783, allocations: 149.3 kB / 0.6926 GB, free: 11.39 MB / 0.5294 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.007087/0.1854, allocations: 2.589 MB / 0.6952 GB, free: 8.805 MB / 0.5294 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.008374/0.1938, allocations: 6.328 MB / 0.7013 GB, free: 2.184 MB / 0.5294 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003046/0.1969, allocations: 1.26 MB / 0.7026 GB, free: 0.9062 MB / 0.5294 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002323/0.1992, allocations: 0.8998 MB / 0.7034 GB, free: 0 / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001826/0.201, allocations: 1.507 MB / 0.7049 GB, free: 14.43 MB / 0.545 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.887e-05/0.2011, allocations: 42.56 kB / 0.705 GB, free: 14.38 MB / 0.545 GB Notification: Performance of pre-optimization done (n=73): time 1.633e-06/0.2011, allocations: 0 / 0.705 GB, free: 14.38 MB / 0.545 GB Notification: Performance of matching and sorting (n=107): time 0.02527/0.2264, allocations: 8.139 MB / 0.7129 GB, free: 6.18 MB / 0.545 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.425e-05/0.2264, allocations: 90.11 kB / 0.713 GB, free: 6.07 MB / 0.545 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006555/0.2271, allocations: 0.5809 MB / 0.7136 GB, free: 5.477 MB / 0.545 GB Notification: Performance of collectPreVariables (initialization): time 9.832e-05/0.2272, allocations: 41.7 kB / 0.7136 GB, free: 5.43 MB / 0.545 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002286/0.2275, allocations: 411.1 kB / 0.714 GB, free: 5.02 MB / 0.545 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002927/0.2278, allocations: 374.6 kB / 0.7143 GB, free: 4.648 MB / 0.545 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0004251/0.2282, allocations: 254.7 kB / 0.7146 GB, free: 4.395 MB / 0.545 GB Notification: Performance of setup shared object (initialization): time 0.0001667/0.2284, allocations: 398.7 kB / 0.715 GB, free: 3.996 MB / 0.545 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002739/0.2311, allocations: 1.114 MB / 0.7161 GB, free: 2.879 MB / 0.545 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002906/0.234, allocations: 1.456 MB / 0.7175 GB, free: 1.281 MB / 0.545 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.005581/0.2396, allocations: 2.604 MB / 0.72 GB, free: 14.53 MB / 0.5606 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.781e-06/0.2396, allocations: 4 kB / 0.72 GB, free: 14.52 MB / 0.5606 GB Notification: Performance of matching and sorting (n=163) (initialization): time 0.009907/0.2495, allocations: 3.862 MB / 0.7238 GB, free: 10.64 MB / 0.5606 GB Notification: Performance of prepare postOptimizeDAE: time 2.95e-05/0.2496, allocations: 12 kB / 0.7238 GB, free: 10.63 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.187e-05/0.2496, allocations: 8 kB / 0.7238 GB, free: 10.62 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.004594/0.2542, allocations: 1.326 MB / 0.7251 GB, free: 9.281 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001864/0.2561, allocations: 455.2 kB / 0.7255 GB, free: 8.836 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01413/0.2702, allocations: 12.13 MB / 0.7374 GB, free: 12.15 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002048/0.2723, allocations: 307.6 kB / 0.7377 GB, free: 11.85 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001192/0.2724, allocations: 63.91 kB / 0.7377 GB, free: 11.79 MB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.003025/0.2755, allocations: 1.318 MB / 0.739 GB, free: 10.46 MB / 0.5762 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002869/0.2784, allocations: 1.441 MB / 0.7404 GB, free: 8.883 MB / 0.5762 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.005568/0.2839, allocations: 2.581 MB / 0.743 GB, free: 6.156 MB / 0.5762 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.308e-06/0.284, allocations: 0 / 0.743 GB, free: 6.156 MB / 0.5762 GB Notification: Performance of matching and sorting (n=163) (initialization_lambda0): time 0.009119/0.2931, allocations: 3.636 MB / 0.7465 GB, free: 2.496 MB / 0.5762 GB Notification: Performance of prepare postOptimizeDAE: time 1.713e-05/0.2931, allocations: 15.5 kB / 0.7465 GB, free: 2.484 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.516e-05/0.2931, allocations: 12 kB / 0.7465 GB, free: 2.473 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003403/0.2965, allocations: 1.045 MB / 0.7476 GB, free: 1.414 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001889/0.2984, allocations: 475.1 kB / 0.748 GB, free: 0.9492 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.3214/0.6199, allocations: 11.1 MB / 0.7589 GB, free: 66.17 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002162/0.6221, allocations: 302.5 kB / 0.7591 GB, free: 66.15 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001269/0.6222, allocations: 61.55 kB / 0.7592 GB, free: 66.14 MB / 0.5762 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 46 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (123): * Single equations (assignments): 119 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 3 systems {(2,8,100.0%), (2,8,100.0%), (3,9,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(3,9)} Notification: Performance of prepare postOptimizeDAE: time 0.0003529/0.6226, allocations: 262 kB / 0.7594 GB, free: 65.92 MB / 0.5762 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001992/0.6228, allocations: 86.94 kB / 0.7595 GB, free: 65.92 MB / 0.5762 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01098/0.6338, allocations: 3.732 MB / 0.7632 GB, free: 64.98 MB / 0.5762 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.232e-05/0.6338, allocations: 11.06 kB / 0.7632 GB, free: 64.98 MB / 0.5762 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.403e-05/0.6338, allocations: 8.594 kB / 0.7632 GB, free: 64.98 MB / 0.5762 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.402e-05/0.6338, allocations: 6.547 kB / 0.7632 GB, free: 64.98 MB / 0.5762 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01229/0.6461, allocations: 5.447 MB / 0.7685 GB, free: 63.06 MB / 0.5762 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.088e-05/0.6462, allocations: 5.781 kB / 0.7685 GB, free: 63.06 MB / 0.5762 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001512/0.6477, allocations: 356.1 kB / 0.7689 GB, free: 63.05 MB / 0.5762 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.003831/0.6516, allocations: 1.2 MB / 0.77 GB, free: 62.87 MB / 0.5762 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001103/0.6517, allocations: 36.88 kB / 0.7701 GB, free: 62.86 MB / 0.5762 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01182/0.6635, allocations: 11.66 MB / 0.7815 GB, free: 54.88 MB / 0.5762 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.963e-06/0.6635, allocations: 10.25 kB / 0.7815 GB, free: 54.88 MB / 0.5762 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.008911/0.6725, allocations: 3.634 MB / 0.785 GB, free: 52.79 MB / 0.5762 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006201/0.6731, allocations: 326.7 kB / 0.7853 GB, free: 52.54 MB / 0.5762 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001408/0.6733, allocations: 32.05 kB / 0.7854 GB, free: 52.52 MB / 0.5762 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00174/0.675, allocations: 311.2 kB / 0.7857 GB, free: 52.38 MB / 0.5762 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002974/0.6753, allocations: 112.5 kB / 0.7858 GB, free: 52.31 MB / 0.5762 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 9.194e-05/0.6754, allocations: 36.64 kB / 0.7858 GB, free: 52.3 MB / 0.5762 GB Notification: Performance of sorting global known variables: time 0.0004345/0.6758, allocations: 412.8 kB / 0.7862 GB, free: 52.06 MB / 0.5762 GB Notification: Performance of sort global known variables: time 3.91e-07/0.6759, allocations: 0 / 0.7862 GB, free: 52.06 MB / 0.5762 GB Notification: Performance of remove unused functions: time 0.001976/0.6778, allocations: 0.5912 MB / 0.7868 GB, free: 51.99 MB / 0.5762 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (68): * Single equations (assignments): 64 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 4 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 3 systems {(3,9,100.0%), (2,8,100.0%), (2,8,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(3,9)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0002178/0.6781, allocations: 144.2 kB / 0.7869 GB, free: 51.88 MB / 0.5762 GB Notification: Performance of simCode: created initialization part: time 0.01218/0.6902, allocations: 5.723 MB / 0.7925 GB, free: 48.57 MB / 0.5762 GB Notification: Performance of simCode: created event and clocks part: time 7.784e-06/0.6903, allocations: 0 / 0.7925 GB, free: 48.57 MB / 0.5762 GB Notification: Performance of simCode: created simulation system equations: time 0.00438/0.6947, allocations: 2.131 MB / 0.7946 GB, free: 47.25 MB / 0.5762 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0009826/0.6957, allocations: 160.8 kB / 0.7947 GB, free: 47.17 MB / 0.5762 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008772/0.7044, allocations: 3.497 MB / 0.7981 GB, free: 44.46 MB / 0.5762 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004636/0.7049, allocations: 1.11 MB / 0.7992 GB, free: 43.32 MB / 0.5762 GB Notification: Performance of simCode: alias equations: time 0.001301/0.7062, allocations: 0.5553 MB / 0.7998 GB, free: 42.76 MB / 0.5762 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002738/0.7065, allocations: 79.39 kB / 0.7998 GB, free: 42.68 MB / 0.5762 GB Notification: Performance of SimCode: time 6.71e-07/0.7065, allocations: 0 / 0.7998 GB, free: 42.68 MB / 0.5762 GB Notification: Performance of Templates: time 0.02894/0.7355, allocations: 28.15 MB / 0.8273 GB, free: 14.69 MB / 0.5762 GB make -j1 -f Buildings_3.0.0_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.makefile (rm -f Buildings_3.0.0_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.pipe ; mkfifo Buildings_3.0.0_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.pipe ; head -c 1048576 < Buildings_3.0.0_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.pipe >> ../files/Buildings_3.0.0_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.sim & ./Buildings_3.0.0_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_3.0.0_Buildings.Electrical.AC.OnePhase.Conversion.Examples.ACACTransformerFull.pipe 2>&1)