Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8.0.0_Buildings.Fluid.Interfaces.Examples.ReverseFlowHumidifier.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+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/ModelicaServices 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaServices with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/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 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo) Using package Buildings with version 8.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo) Running command: "" <> buildModelFMU(Buildings.Fluid.Interfaces.Examples.ReverseFlowHumidifier,fileNamePrefix="Buildings_8_0_0_Buildings_Fluid_Interfaces_Examples_ReverseFlowHumidifier",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Interfaces.Examples.ReverseFlowHumidifier,fileNamePrefix="Buildings_8_0_0_Buildings_Fluid_Interfaces_Examples_ReverseFlowHumidifier",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.0.0/package.mo): time 1.908/1.908, allocations: 287.4 MB / 302.6 MB, free: 8.188 MB / 234.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001077/0.001077, allocations: 186.7 kB / 371.1 MB, free: 10.81 MB / 298.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.583/1.583, allocations: 205.4 MB / 0.6298 GB, free: 10.59 MB / 458.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0007833/0.0007832, allocations: 88.69 kB / 0.7431 GB, free: 6.574 MB / 0.5573 GB Notification: Performance of FrontEnd - loaded program: time 0.0003973/0.0003976, allocations: 12.81 kB / 0.8662 GB, free: 140.6 MB / 0.6198 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2177/0.2182, allocations: 115.3 MB / 0.9787 GB, free: 28.11 MB / 0.6198 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Interfaces.Examples.ReverseFlowHumidifier): time 0.6904/0.9087, allocations: 250.8 MB / 1.224 GB, free: 15.09 MB / 0.7605 GB Notification: Performance of NFInst.instExpressions: time 0.02193/0.9306, allocations: 16.1 MB / 1.239 GB, free: 0.8984 MB / 0.7605 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003173/0.9339, allocations: 51.62 kB / 1.239 GB, free: 0.8477 MB / 0.7605 GB Notification: Performance of NFTyping.typeComponents: time 0.003051/0.937, allocations: 0.7532 MB / 1.24 GB, free: 92 kB / 0.7605 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Fluid/Sources.mo:788:36-789:54:writable] Warning: 'each' used when modifying non-array element m_flow. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Fluid/Sources.mo:786:36-787:54:writable] Warning: 'each' used when modifying non-array element m_flow. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Fluid/Sources.mo:788:36-789:54:writable] Warning: 'each' used when modifying non-array element m_flow. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Fluid/Sources.mo:786:36-787:54:writable] Warning: 'each' used when modifying non-array element m_flow. Notification: Performance of NFTyping.typeBindings: time 0.007894/0.9449, allocations: 2.298 MB / 1.242 GB, free: 13.78 MB / 0.7761 GB Notification: Performance of NFTyping.typeClassSections: time 0.005162/0.9501, allocations: 1.527 MB / 1.244 GB, free: 12.27 MB / 0.7761 GB Notification: Performance of NFFlatten.flatten: time 0.007384/0.9575, allocations: 5.684 MB / 1.249 GB, free: 6.562 MB / 0.7761 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002238/0.9598, allocations: 1.409 MB / 1.251 GB, free: 5.125 MB / 0.7761 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004459/0.9642, allocations: 1.918 MB / 1.253 GB, free: 3.199 MB / 0.7761 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002097/0.9663, allocations: 1.436 MB / 1.254 GB, free: 1.758 MB / 0.7761 GB Notification: Performance of NFPackage.collectConstants: time 0.0002483/0.9666, allocations: 76 kB / 1.254 GB, free: 1.684 MB / 0.7761 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004174/0.9708, allocations: 1.629 MB / 1.256 GB, free: 52 kB / 0.7761 GB Notification: Performance of NFScalarize.scalarize: time 0.000718/0.9715, allocations: 0.5958 MB / 1.256 GB, free: 15.45 MB / 0.7917 GB Notification: Performance of NFVerifyModel.verify: time 0.0006832/0.9722, allocations: 432.7 kB / 1.257 GB, free: 15.02 MB / 0.7917 GB Notification: Performance of NFConvertDAE.convert: time 0.003281/0.9755, allocations: 2.626 MB / 1.259 GB, free: 12.39 MB / 0.7917 GB Notification: Performance of FrontEnd - DAE generated: time 4.488e-06/0.9755, allocations: 3.938 kB / 1.259 GB, free: 12.39 MB / 0.7917 GB Notification: Performance of FrontEnd: time 1.763e-06/0.9755, allocations: 0 / 1.259 GB, free: 12.39 MB / 0.7917 GB Notification: Performance of Transformations before backend: time 3.481e-05/0.9756, allocations: 0 / 1.259 GB, free: 12.39 MB / 0.7917 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 324 * Number of variables: 324 Notification: Performance of Generate backend data structure: time 0.003829/0.9794, allocations: 2.027 MB / 1.261 GB, free: 10.29 MB / 0.7917 GB Notification: Performance of prepare preOptimizeDAE: time 4.431e-05/0.9795, allocations: 12.03 kB / 1.261 GB, free: 10.28 MB / 0.7917 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0002744/0.9797, allocations: 198.1 kB / 1.261 GB, free: 10.08 MB / 0.7917 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004026/0.9838, allocations: 0.6572 MB / 1.262 GB, free: 9.418 MB / 0.7917 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002343/0.9861, allocations: 1.315 MB / 1.263 GB, free: 8.047 MB / 0.7917 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 7.889e-05/0.9862, allocations: 102.5 kB / 1.263 GB, free: 7.945 MB / 0.7917 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002162/0.9865, allocations: 140 kB / 1.264 GB, free: 7.809 MB / 0.7917 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002683/0.9891, allocations: 1.563 MB / 1.265 GB, free: 6.18 MB / 0.7917 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.366e-05/0.9892, allocations: 4 kB / 1.265 GB, free: 6.176 MB / 0.7917 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001214/0.9893, allocations: 55.94 kB / 1.265 GB, free: 6.121 MB / 0.7917 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.083e-05/0.9894, allocations: 50.45 kB / 1.265 GB, free: 6.07 MB / 0.7917 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002132/0.9915, allocations: 1.262 MB / 1.266 GB, free: 4.801 MB / 0.7917 GB 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 0.009729/1.001, allocations: 7.214 MB / 1.274 GB, free: 13.02 MB / 0.8073 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001017/1.002, allocations: 0.645 MB / 1.274 GB, free: 12.37 MB / 0.8073 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005235/1.003, allocations: 374.3 kB / 1.275 GB, free: 12 MB / 0.8073 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002167/1.003, allocations: 105.6 kB / 1.275 GB, free: 11.88 MB / 0.8073 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.2e-05/1.003, allocations: 51.12 kB / 1.275 GB, free: 11.82 MB / 0.8073 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0009045/1.004, allocations: 143 kB / 1.275 GB, free: 11.68 MB / 0.8073 GB Notification: Performance of pre-optimization done (n=67): time 3.096e-06/1.004, allocations: 0 / 1.275 GB, free: 11.68 MB / 0.8073 GB Notification: Performance of matching and sorting (n=67): time 0.001905/1.006, allocations: 1.009 MB / 1.276 GB, free: 10.66 MB / 0.8073 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.838e-05/1.006, allocations: 59.97 kB / 1.276 GB, free: 10.59 MB / 0.8073 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001674/1.008, allocations: 1.315 MB / 1.277 GB, free: 9.27 MB / 0.8073 GB Notification: Performance of collectPreVariables (initialization): time 8.035e-05/1.008, allocations: 49.7 kB / 1.277 GB, free: 9.215 MB / 0.8073 GB Notification: Performance of collectInitialEqns (initialization): time 0.0006874/1.008, allocations: 0.7735 MB / 1.278 GB, free: 8.434 MB / 0.8073 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002242/1.009, allocations: 248.5 kB / 1.278 GB, free: 8.188 MB / 0.8073 GB Notification: Performance of simplifyInitialFunctions (initialization): time 4.721e-05/1.009, allocations: 20 kB / 1.278 GB, free: 8.168 MB / 0.8073 GB Notification: Performance of setup shared object (initialization): time 0.000148/1.009, allocations: 345.9 kB / 1.279 GB, free: 7.824 MB / 0.8073 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005481/1.009, allocations: 337.8 kB / 1.279 GB, free: 7.492 MB / 0.8073 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0007645/1.01, allocations: 0.675 MB / 1.28 GB, free: 6.676 MB / 0.8073 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001273/1.012, allocations: 0.9449 MB / 1.28 GB, free: 5.641 MB / 0.8073 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.003e-06/1.012, allocations: 4 kB / 1.28 GB, free: 5.637 MB / 0.8073 GB Notification: Performance of matching and sorting (n=123) (initialization): time 0.001859/1.013, allocations: 1.136 MB / 1.282 GB, free: 4.492 MB / 0.8073 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001786/1.014, allocations: 283.7 kB / 1.282 GB, free: 4.121 MB / 0.8073 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.44e-05/1.014, allocations: 8 kB / 1.282 GB, free: 4.113 MB / 0.8073 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.413e-05/1.014, allocations: 12 kB / 1.282 GB, free: 4.102 MB / 0.8073 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008956/1.015, allocations: 215.6 kB / 1.282 GB, free: 3.891 MB / 0.8073 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.802e-05/1.015, allocations: 12 kB / 1.282 GB, free: 3.879 MB / 0.8073 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001699/1.016, allocations: 133.1 kB / 1.282 GB, free: 3.75 MB / 0.8073 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 8.606e-05/1.016, allocations: 43.98 kB / 1.282 GB, free: 3.707 MB / 0.8073 GB Notification: Performance of prepare postOptimizeDAE: time 1.396e-05/1.016, allocations: 4.328 kB / 1.282 GB, free: 3.703 MB / 0.8073 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.00153/1.018, allocations: 0.9756 MB / 1.283 GB, free: 2.727 MB / 0.8073 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.166e-05/1.018, allocations: 8 kB / 1.283 GB, free: 2.719 MB / 0.8073 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.235e-05/1.018, allocations: 16.78 kB / 1.283 GB, free: 2.703 MB / 0.8073 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008372/1.019, allocations: 207.7 kB / 1.283 GB, free: 2.5 MB / 0.8073 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.896e-05/1.019, allocations: 20.64 kB / 1.283 GB, free: 2.48 MB / 0.8073 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001653/1.021, allocations: 135.5 kB / 1.284 GB, free: 2.348 MB / 0.8073 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.833e-05/1.021, allocations: 39.98 kB / 1.284 GB, free: 2.309 MB / 0.8073 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 30 * 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 (121): * Single equations (assignments): 119 * Array equations: 2 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0008773/1.022, allocations: 0.4968 MB / 1.284 GB, free: 1.801 MB / 0.8073 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002977/1.022, allocations: 146.2 kB / 1.284 GB, free: 1.656 MB / 0.8073 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001416/1.023, allocations: 0.8201 MB / 1.285 GB, free: 0.8242 MB / 0.8073 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.654e-06/1.023, allocations: 4 kB / 1.285 GB, free: 0.8203 MB / 0.8073 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.04e-06/1.023, allocations: 4 kB / 1.285 GB, free: 0.8164 MB / 0.8073 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001015/1.024, allocations: 0.7785 MB / 1.286 GB, free: 15.99 MB / 0.823 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00375/1.028, allocations: 2.286 MB / 1.288 GB, free: 13.62 MB / 0.823 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.32e-06/1.028, allocations: 0 / 1.288 GB, free: 13.62 MB / 0.823 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008874/1.029, allocations: 171.8 kB / 1.288 GB, free: 13.46 MB / 0.823 GB Notification: Performance of postOpt tearingSystem (simulation): time 9.408e-06/1.029, allocations: 4 kB / 1.288 GB, free: 13.45 MB / 0.823 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.575e-05/1.029, allocations: 24.19 kB / 1.288 GB, free: 13.43 MB / 0.823 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 8.956e-06/1.029, allocations: 7.938 kB / 1.288 GB, free: 13.42 MB / 0.823 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.767e-06/1.029, allocations: 3.938 kB / 1.288 GB, free: 13.42 MB / 0.823 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00201/1.031, allocations: 1.3 MB / 1.289 GB, free: 12.08 MB / 0.823 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006705/1.032, allocations: 323.2 kB / 1.29 GB, free: 11.75 MB / 0.823 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001992/1.032, allocations: 16 kB / 1.29 GB, free: 11.73 MB / 0.823 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001041/1.033, allocations: 96.77 kB / 1.29 GB, free: 11.64 MB / 0.823 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.417e-05/1.033, allocations: 52.44 kB / 1.29 GB, free: 11.59 MB / 0.823 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.949e-05/1.033, allocations: 31.98 kB / 1.29 GB, free: 11.55 MB / 0.823 GB Notification: Performance of sorting global known variables: time 0.001316/1.035, allocations: 0.8925 MB / 1.291 GB, free: 10.66 MB / 0.823 GB Notification: Performance of sort global known variables: time 1.452e-06/1.035, allocations: 0 / 1.291 GB, free: 10.66 MB / 0.823 GB Notification: Performance of remove unused functions: time 0.002305/1.037, allocations: 0.8418 MB / 1.292 GB, free: 9.82 MB / 0.823 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 7 * Number of states: 6 (humBac.vol.dynBal.U,humBac.vol.dynBal.m,humBac.vol.dynBal.mXi[1],humFor.vol.dynBal.U,humFor.vol.dynBal.m,humFor.vol.dynBal.mXi[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 (71): * Single equations (assignments): 71 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.00287/1.04, allocations: 2.013 MB / 1.294 GB, free: 7.762 MB / 0.823 GB Notification: Performance of simCode: created initialization part: time 0.002591/1.042, allocations: 1.315 MB / 1.295 GB, free: 6.449 MB / 0.823 GB Notification: Performance of simCode: created event and clocks part: time 6.222e-06/1.042, allocations: 0 / 1.295 GB, free: 6.449 MB / 0.823 GB Notification: Performance of simCode: created simulation system equations: time 0.0005277/1.043, allocations: 343 kB / 1.295 GB, free: 6.113 MB / 0.823 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005039/1.048, allocations: 0.8428 MB / 1.296 GB, free: 5.285 MB / 0.823 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01596/1.064, allocations: 9.035 MB / 1.305 GB, free: 11.82 MB / 0.8386 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001082/1.065, allocations: 1.345 MB / 1.306 GB, free: 10.45 MB / 0.8386 GB Notification: Performance of simCode: alias equations: time 0.002014/1.067, allocations: 412.4 kB / 1.307 GB, free: 10.04 MB / 0.8386 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009249/1.068, allocations: 0.6125 MB / 1.307 GB, free: 9.426 MB / 0.8386 GB Notification: Performance of SimCode: time 9.22e-07/1.068, allocations: 0 / 1.307 GB, free: 9.426 MB / 0.8386 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.07502/1.143, allocations: 41.72 MB / 1.348 GB, free: 96 kB / 0.8698 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002132/1.143, allocations: 240.2 kB / 1.348 GB, free: 15.85 MB / 0.8855 GB Notification: Performance of buildModelFMU: Generate platform static: time 3.327/4.471, allocations: 0 / 1.348 GB, free: 15.85 MB / 0.8855 GB (rm -f Buildings_8.0.0_Buildings.Fluid.Interfaces.Examples.ReverseFlowHumidifier.pipe ; mkfifo Buildings_8.0.0_Buildings.Fluid.Interfaces.Examples.ReverseFlowHumidifier.pipe ; head -c 1048576 < Buildings_8.0.0_Buildings.Fluid.Interfaces.Examples.ReverseFlowHumidifier.pipe >> ../files/Buildings_8.0.0_Buildings.Fluid.Interfaces.Examples.ReverseFlowHumidifier.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_8_0_0_Buildings_Fluid_Interfaces_Examples_ReverseFlowHumidifier_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 Buildings_8_0_0_Buildings_Fluid_Interfaces_Examples_ReverseFlowHumidifier.fmu > Buildings_8.0.0_Buildings.Fluid.Interfaces.Examples.ReverseFlowHumidifier.pipe 2>&1)