Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_dev_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network.conf.json 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/Modelica 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/OpenIPSL 3.1.0-master/package.mo", uses=false) Using package OpenIPSL with version 3.1.0-dev (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/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 Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 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) Running command: translateModel(OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_dev_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network") translateModel(OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_dev_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0009284/0.0009285, allocations: 92.16 kB / 16.02 MB, free: 80 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.303/1.303, allocations: 223.3 MB / 240 MB, free: 5.48 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0009872/0.0009873, allocations: 176.5 kB / 291.3 MB, free: 2.148 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/package.mo): time 0.4819/0.4819, allocations: 91.93 MB / 434.3 MB, free: 10.27 MB / 302.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0003543/0.0003544, allocations: 11.98 kB / 0.5054 GB, free: 7.25 MB / 382.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3028/0.3032, allocations: 72.47 MB / 0.5762 GB, free: 37.16 MB / 430.1 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network): time 0.003943/0.3072, allocations: 5.747 MB / 0.5818 GB, free: 33.07 MB / 430.1 MB Notification: Performance of NFInst.instExpressions: time 0.002624/0.3098, allocations: 2.157 MB / 0.5839 GB, free: 31.54 MB / 430.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003205/0.3102, allocations: 10.69 kB / 0.5839 GB, free: 31.54 MB / 430.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0004691/0.3107, allocations: 192.8 kB / 0.5841 GB, free: 31.46 MB / 430.1 MB Notification: Performance of NFTyping.typeBindings: time 0.001217/0.3119, allocations: 0.6881 MB / 0.5848 GB, free: 31.02 MB / 430.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0009533/0.3129, allocations: 0.6604 MB / 0.5854 GB, free: 30.61 MB / 430.1 MB Notification: Performance of NFFlatten.flatten: time 0.001069/0.3139, allocations: 1.688 MB / 0.5871 GB, free: 29.8 MB / 430.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0003267/0.3143, allocations: 262.2 kB / 0.5873 GB, free: 29.69 MB / 430.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0004907/0.3148, allocations: 0.5549 MB / 0.5879 GB, free: 29.45 MB / 430.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0005861/0.3154, allocations: 0.6857 MB / 0.5885 GB, free: 29.16 MB / 430.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0001163/0.3155, allocations: 58.66 kB / 0.5886 GB, free: 29.16 MB / 430.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0003241/0.3158, allocations: 188.5 kB / 0.5888 GB, free: 29.12 MB / 430.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0001802/0.316, allocations: 260.4 kB / 0.589 GB, free: 28.98 MB / 430.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0003479/0.3164, allocations: 0.5814 MB / 0.5896 GB, free: 28.58 MB / 430.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0008897/0.3173, allocations: 1.553 MB / 0.5911 GB, free: 28.2 MB / 430.1 MB Notification: Performance of FrontEnd - DAE generated: time 3.166e-06/0.3173, allocations: 0.9375 kB / 0.5911 GB, free: 28.2 MB / 430.1 MB Notification: Performance of FrontEnd: time 1.552e-06/0.3173, allocations: 1.094 kB / 0.5911 GB, free: 28.2 MB / 430.1 MB Notification: Performance of Transformations before backend: time 1.691e-05/0.3173, allocations: 0 / 0.5911 GB, free: 28.2 MB / 430.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 159 * Number of variables: 159 Notification: Performance of Generate backend data structure: time 0.006214/0.3235, allocations: 2.082 MB / 0.5931 GB, free: 27.23 MB / 430.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.221e-05/0.3236, allocations: 8.844 kB / 0.5931 GB, free: 27.23 MB / 430.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00337/0.3269, allocations: 0.5621 MB / 0.5937 GB, free: 27.11 MB / 430.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001567/0.3285, allocations: 1.005 MB / 0.5947 GB, free: 26.45 MB / 430.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002321/0.3288, allocations: 238.2 kB / 0.5949 GB, free: 26.24 MB / 430.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001484/0.3289, allocations: 70.78 kB / 0.595 GB, free: 26.22 MB / 430.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001861/0.3308, allocations: 1.011 MB / 0.5959 GB, free: 25.82 MB / 430.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.633e-05/0.3308, allocations: 0 / 0.5959 GB, free: 25.82 MB / 430.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.853e-05/0.3309, allocations: 33.7 kB / 0.596 GB, free: 25.79 MB / 430.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.326e-05/0.3309, allocations: 15.62 kB / 0.596 GB, free: 25.79 MB / 430.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001922/0.3329, allocations: 0.9706 MB / 0.5969 GB, free: 25.45 MB / 430.1 MB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.005672/0.3385, allocations: 3.686 MB / 0.6005 GB, free: 23.41 MB / 430.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.01555/0.3541, allocations: 4.299 MB / 0.6047 GB, free: 22.59 MB / 430.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.001461/0.3556, allocations: 0.6208 MB / 0.6053 GB, free: 22.35 MB / 430.1 MB Notification: Performance of preOpt evalFunc (simulation): time 8.058e-05/0.3557, allocations: 14.7 kB / 0.6054 GB, free: 22.35 MB / 430.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.193e-05/0.3557, allocations: 51.31 kB / 0.6054 GB, free: 22.29 MB / 430.1 MB Notification: Performance of pre-optimization done (n=76): time 2.365e-06/0.3557, allocations: 0 / 0.6054 GB, free: 22.29 MB / 430.1 MB Notification: Performance of matching and sorting (n=76): time 0.015/0.3707, allocations: 4.657 MB / 0.61 GB, free: 21.03 MB / 430.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 4.574e-05/0.3708, allocations: 111.2 kB / 0.6101 GB, free: 20.91 MB / 430.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002088/0.3729, allocations: 1.166 MB / 0.6112 GB, free: 20.43 MB / 430.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0001724/0.3731, allocations: 40.23 kB / 0.6112 GB, free: 20.38 MB / 430.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0002908/0.3734, allocations: 471.5 kB / 0.6117 GB, free: 20.01 MB / 430.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0002396/0.3736, allocations: 284.2 kB / 0.612 GB, free: 19.79 MB / 430.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001576/0.3738, allocations: 104.8 kB / 0.6121 GB, free: 19.73 MB / 430.1 MB Notification: Performance of setup shared object (initialization): time 6.843e-05/0.3739, allocations: 349.5 kB / 0.6124 GB, free: 19.41 MB / 430.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.00143/0.3753, allocations: 0.6926 MB / 0.6131 GB, free: 19.15 MB / 430.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001496/0.3768, allocations: 0.8209 MB / 0.6139 GB, free: 18.78 MB / 430.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.02082/0.3976, allocations: 4.815 MB / 0.6186 GB, free: 17.43 MB / 430.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.743e-06/0.3977, allocations: 3.938 kB / 0.6186 GB, free: 17.42 MB / 430.1 MB Notification: Performance of matching and sorting (n=140) (initialization): time 0.008168/0.4059, allocations: 3.135 MB / 0.6216 GB, free: 14.84 MB / 430.1 MB Notification: Performance of prepare postOptimizeDAE: time 5.062e-05/0.4059, allocations: 143.4 kB / 0.6218 GB, free: 14.68 MB / 430.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.325e-06/0.406, allocations: 4 kB / 0.6218 GB, free: 14.67 MB / 430.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.004184/0.4101, allocations: 1.206 MB / 0.623 GB, free: 13.46 MB / 430.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001184/0.4113, allocations: 219.7 kB / 0.6232 GB, free: 13.24 MB / 430.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.009437/0.4208, allocations: 5.109 MB / 0.6282 GB, free: 7.992 MB / 430.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001725/0.4225, allocations: 199 kB / 0.6283 GB, free: 7.797 MB / 430.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.648e-05/0.4226, allocations: 39.98 kB / 0.6284 GB, free: 7.758 MB / 430.1 MB Notification: Performance of prepare postOptimizeDAE: time 6.442e-06/0.4226, allocations: 11.88 kB / 0.6284 GB, free: 7.746 MB / 430.1 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.007632/0.4303, allocations: 2.937 MB / 0.6313 GB, free: 4.797 MB / 430.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.372e-06/0.4303, allocations: 4 kB / 0.6313 GB, free: 4.793 MB / 430.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.004147/0.4345, allocations: 1.194 MB / 0.6324 GB, free: 3.59 MB / 430.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001078/0.4355, allocations: 211.7 kB / 0.6326 GB, free: 3.383 MB / 430.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.009877/0.4454, allocations: 5.116 MB / 0.6376 GB, free: 14.12 MB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001638/0.4471, allocations: 187.1 kB / 0.6378 GB, free: 13.94 MB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001012/0.4472, allocations: 39.98 kB / 0.6379 GB, free: 13.9 MB / 446.1 MB Warning: Assuming fixed start value for the following 1 variables: G1.order6.delta:VARIABLE(flow=false start = G1.order6.delta0 unit = "rad" fixed = true ) "Rotor angle" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 7 * 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 (119): * Single equations (assignments): 116 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(2,100.0%), (2,100.0%)} * Non-linear Jacobian (size): 0 systems * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(7,13,59.2%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0006265/0.4478, allocations: 351.5 kB / 0.6382 GB, free: 13.55 MB / 446.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001989/0.448, allocations: 106.7 kB / 0.6383 GB, free: 13.45 MB / 446.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.007636/0.4557, allocations: 2.658 MB / 0.6409 GB, free: 10.77 MB / 446.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.298e-06/0.4557, allocations: 8 kB / 0.6409 GB, free: 10.76 MB / 446.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.943e-06/0.4557, allocations: 4 kB / 0.6409 GB, free: 10.76 MB / 446.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.044e-05/0.4557, allocations: 3.984 kB / 0.6409 GB, free: 10.75 MB / 446.1 MB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.009459/0.4652, allocations: 4.24 MB / 0.645 GB, free: 6.414 MB / 446.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.449e-06/0.4652, allocations: 0 / 0.645 GB, free: 6.414 MB / 446.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007564/0.466, allocations: 115.9 kB / 0.6452 GB, free: 6.301 MB / 446.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.003659/0.4697, allocations: 1.086 MB / 0.6462 GB, free: 5.207 MB / 446.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.953e-05/0.4698, allocations: 27.98 kB / 0.6462 GB, free: 5.18 MB / 446.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.008544/0.4783, allocations: 4.126 MB / 0.6503 GB, free: 0.918 MB / 446.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.753e-06/0.4783, allocations: 0 / 0.6503 GB, free: 0.918 MB / 446.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.009067/0.4874, allocations: 3.45 MB / 0.6536 GB, free: 13.44 MB / 462.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0004075/0.4878, allocations: 219.5 kB / 0.6538 GB, free: 13.2 MB / 462.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001685/0.488, allocations: 23.94 kB / 0.6539 GB, free: 13.18 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001275/0.4893, allocations: 135.9 kB / 0.654 GB, free: 13.05 MB / 462.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000344/0.4896, allocations: 128.4 kB / 0.6541 GB, free: 12.92 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.011e-05/0.4897, allocations: 20 kB / 0.6541 GB, free: 12.9 MB / 462.1 MB Notification: Performance of sorting global known variables: time 0.001542/0.4913, allocations: 0.8192 MB / 0.6549 GB, free: 12.07 MB / 462.1 MB Notification: Performance of sort global known variables: time 2.104e-06/0.4913, allocations: 112 / 0.6549 GB, free: 12.07 MB / 462.1 MB Notification: Performance of remove unused functions: time 0.00153/0.4928, allocations: 0.5968 MB / 0.6555 GB, free: 11.47 MB / 462.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 12 (G1.order6.delta,G1.order6.w,G1.order6.e1q,G1.order6.e1d,G1.order6.e2q,G1.order6.e2d,G1.aVRtypeIII.vm,G1.aVRtypeIII.vr,G1.aVRtypeIII.vf1,G1.pss.imLeadLag.TF.x_scaled[1],G1.pss.imLeadLag1.TF.x_scaled[1],G1.pss.derivativeLag.TF.x_scaled[1]) * 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 (59): * Single equations (assignments): 56 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 2 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 2 systems {(2,100.0%), (2,100.0%)} * Non-linear Jacobian (size): 0 systems * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(9,9,48.1%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0002355/0.493, allocations: 141.3 kB / 0.6557 GB, free: 11.32 MB / 462.1 MB Notification: Performance of simCode: created initialization part: time 0.009376/0.5024, allocations: 3.895 MB / 0.6595 GB, free: 7.316 MB / 462.1 MB Notification: Performance of simCode: created event and clocks part: time 2.946e-06/0.5025, allocations: 0 / 0.6595 GB, free: 7.316 MB / 462.1 MB Notification: Performance of simCode: created simulation system equations: time 0.003322/0.5058, allocations: 1.381 MB / 0.6608 GB, free: 5.883 MB / 462.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0009006/0.5067, allocations: 105.8 kB / 0.6609 GB, free: 5.781 MB / 462.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004494/0.5112, allocations: 2.873 MB / 0.6637 GB, free: 2.879 MB / 462.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006164/0.5118, allocations: 1.086 MB / 0.6648 GB, free: 1.766 MB / 462.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000362/0.5122, allocations: 75.41 kB / 0.6648 GB, free: 1.691 MB / 462.1 MB Notification: Performance of SimCode: time 6.41e-07/0.5122, allocations: 0 / 0.6648 GB, free: 1.691 MB / 462.1 MB Notification: Performance of Templates: time 0.03152/0.5437, allocations: 29.92 MB / 0.6941 GB, free: 3.777 MB / 494.1 MB make -j1 -f OpenIPSL_dev_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network.makefile (rm -f OpenIPSL_dev_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network.pipe ; mkfifo OpenIPSL_dev_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network.pipe ; head -c 1048576 < OpenIPSL_dev_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network.pipe >> ../files/OpenIPSL_dev_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network.sim & ./OpenIPSL_dev_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_dev_OpenIPSL.Examples.DAEMode.SMIB_Examples.Example_2.Network.pipe 2>&1)