Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_3.0.0_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp.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/Complex 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/Buildings 12.0.0-master/package.mo", uses=false) Using package Buildings with version 12.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/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 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) Running command: translateModel(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp") translateModel(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001136/0.001136, allocations: 103.4 kB / 15.33 MB, free: 0.5078 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001162/0.001162, allocations: 195.5 kB / 16.25 MB, free: 6.617 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.404/1.404, allocations: 222.9 MB / 239.9 MB, free: 4.531 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/package.mo): time 2.778/2.778, allocations: 472.6 MB / 0.7448 GB, free: 4.914 MB / 0.5919 GB Notification: Performance of FrontEnd - loaded program: time 0.001285/0.001285, allocations: 63.81 kB / 0.9115 GB, free: 33.52 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3368/0.3381, allocations: 159.9 MB / 1.068 GB, free: 10.77 MB / 0.8262 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp): time 0.1793/0.5175, allocations: 165.5 MB / 1.229 GB, free: 4.648 MB / 0.9825 GB Notification: Performance of NFInst.instExpressions: time 0.006902/0.5245, allocations: 4.037 MB / 1.233 GB, free: 0.5977 MB / 0.9825 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0009668/0.5255, allocations: 15.88 kB / 1.233 GB, free: 0.582 MB / 0.9825 GB Notification: Performance of NFTyping.typeComponents: time 0.001154/0.5267, allocations: 210.9 kB / 1.233 GB, free: 384 kB / 0.9825 GB Notification: Performance of NFTyping.typeBindings: time 0.002471/0.5292, allocations: 0.6381 MB / 1.234 GB, free: 15.73 MB / 0.9981 GB Notification: Performance of NFTyping.typeClassSections: time 0.001778/0.531, allocations: 430 kB / 1.235 GB, free: 15.32 MB / 0.9981 GB Notification: Performance of NFFlatten.flatten: time 0.003724/0.5347, allocations: 2.801 MB / 1.237 GB, free: 12.51 MB / 0.9981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003286/0.538, allocations: 2.536 MB / 1.24 GB, free: 9.961 MB / 0.9981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002562/0.5406, allocations: 1.312 MB / 1.241 GB, free: 8.645 MB / 0.9981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001671/0.5423, allocations: 0.9143 MB / 1.242 GB, free: 7.727 MB / 0.9981 GB Notification: Performance of NFPackage.collectConstants: time 0.0003192/0.5426, allocations: 72 kB / 1.242 GB, free: 7.656 MB / 0.9981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001853/0.5445, allocations: 0.838 MB / 1.243 GB, free: 6.816 MB / 0.9981 GB Notification: Performance of NFScalarize.scalarize: time 0.0005636/0.5451, allocations: 370.7 kB / 1.243 GB, free: 6.453 MB / 0.9981 GB Notification: Performance of NFVerifyModel.verify: time 0.001188/0.5463, allocations: 0.6179 MB / 1.244 GB, free: 5.832 MB / 0.9981 GB Notification: Performance of NFConvertDAE.convert: time 0.003052/0.5493, allocations: 1.639 MB / 1.245 GB, free: 4.188 MB / 0.9981 GB Notification: Performance of FrontEnd - DAE generated: time 7.524e-06/0.5494, allocations: 0 / 1.245 GB, free: 4.188 MB / 0.9981 GB Notification: Performance of FrontEnd: time 1.873e-06/0.5494, allocations: 0 / 1.245 GB, free: 4.188 MB / 0.9981 GB Notification: Performance of Transformations before backend: time 6.788e-05/0.5495, allocations: 0 / 1.245 GB, free: 4.188 MB / 0.9981 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 135 * Number of variables: 135 Notification: Performance of Generate backend data structure: time 0.00493/0.5544, allocations: 1.623 MB / 1.247 GB, free: 2.5 MB / 0.9981 GB Notification: Performance of prepare preOptimizeDAE: time 6.22e-05/0.5545, allocations: 8.031 kB / 1.247 GB, free: 2.492 MB / 0.9981 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001354/0.5558, allocations: 202.3 kB / 1.247 GB, free: 2.293 MB / 0.9981 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001956/0.5578, allocations: 0.8735 MB / 1.248 GB, free: 1.363 MB / 0.9981 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 5.55e-05/0.5579, allocations: 53.31 kB / 1.248 GB, free: 1.312 MB / 0.9981 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001628/0.558, allocations: 60 kB / 1.248 GB, free: 1.254 MB / 0.9981 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001661/0.5597, allocations: 0.987 MB / 1.249 GB, free: 200 kB / 0.9981 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.123e-05/0.5598, allocations: 15.88 kB / 1.249 GB, free: 184 kB / 0.9981 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.373e-05/0.5598, allocations: 20 kB / 1.249 GB, free: 164 kB / 0.9981 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.925e-05/0.5599, allocations: 16 kB / 1.249 GB, free: 148 kB / 0.9981 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.6562/1.216, allocations: 0.7889 MB / 1.25 GB, free: 186.6 MB / 0.9981 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 0.004509/1.221, allocations: 4.76 MB / 1.255 GB, free: 183.5 MB / 0.9981 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001691/1.222, allocations: 4.012 MB / 1.258 GB, free: 179.2 MB / 0.9981 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005128/1.223, allocations: 349.6 kB / 1.259 GB, free: 179.2 MB / 0.9981 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002611/1.223, allocations: 194.5 kB / 1.259 GB, free: 179 MB / 0.9981 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005309/1.224, allocations: 329.2 kB / 1.259 GB, free: 179 MB / 0.9981 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0003876/1.224, allocations: 35.69 kB / 1.259 GB, free: 179 MB / 0.9981 GB Notification: Performance of pre-optimization done (n=35): time 1.874e-06/1.224, allocations: 0 / 1.259 GB, free: 179 MB / 0.9981 GB Notification: Performance of matching and sorting (n=35): time 0.005537/1.23, allocations: 1.668 MB / 1.261 GB, free: 178.7 MB / 0.9981 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.649e-05/1.23, allocations: 90.12 kB / 1.261 GB, free: 178.6 MB / 0.9981 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001505/1.231, allocations: 1.186 MB / 1.262 GB, free: 178.5 MB / 0.9981 GB Notification: Performance of collectPreVariables (initialization): time 5.849e-05/1.231, allocations: 38.67 kB / 1.262 GB, free: 178.5 MB / 0.9981 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003704/1.232, allocations: 0.524 MB / 1.263 GB, free: 178.3 MB / 0.9981 GB Notification: Performance of collectInitialBindings (initialization): time 9.016e-05/1.232, allocations: 118.6 kB / 1.263 GB, free: 178.2 MB / 0.9981 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001618/1.232, allocations: 122.9 kB / 1.263 GB, free: 178.2 MB / 0.9981 GB Notification: Performance of setup shared object (initialization): time 6.124e-05/1.232, allocations: 325.3 kB / 1.263 GB, free: 177.9 MB / 0.9981 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004056/1.232, allocations: 237.2 kB / 1.263 GB, free: 177.9 MB / 0.9981 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005544/1.233, allocations: 0.5585 MB / 1.264 GB, free: 177.5 MB / 0.9981 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008672/1.234, allocations: 0.6804 MB / 1.265 GB, free: 177.3 MB / 0.9981 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.568e-06/1.234, allocations: 0 / 1.265 GB, free: 177.3 MB / 0.9981 GB Notification: Performance of matching and sorting (n=58) (initialization): time 0.002415/1.236, allocations: 1.146 MB / 1.266 GB, free: 177 MB / 0.9981 GB Notification: Performance of prepare postOptimizeDAE: time 3.871e-05/1.236, allocations: 34.84 kB / 1.266 GB, free: 176.9 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.048e-05/1.236, allocations: 5.953 kB / 1.266 GB, free: 176.9 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001618/1.238, allocations: 471.8 kB / 1.266 GB, free: 176.9 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002917/1.238, allocations: 66.33 kB / 1.266 GB, free: 176.9 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001294/1.24, allocations: 1.115 MB / 1.267 GB, free: 176.2 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001001/1.241, allocations: 93.41 kB / 1.268 GB, free: 176.1 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.408e-05/1.241, allocations: 29.77 kB / 1.268 GB, free: 176.1 MB / 0.9981 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0008/1.241, allocations: 0.5233 MB / 1.268 GB, free: 175.9 MB / 0.9981 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004785/1.242, allocations: 0.5202 MB / 1.269 GB, free: 175.5 MB / 0.9981 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0006985/1.243, allocations: 0.6001 MB / 1.269 GB, free: 175.1 MB / 0.9981 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.588e-06/1.243, allocations: 1.672 kB / 1.269 GB, free: 175.1 MB / 0.9981 GB Notification: Performance of matching and sorting (n=58) (initialization_lambda0): time 0.001634/1.244, allocations: 0.9207 MB / 1.27 GB, free: 174.7 MB / 0.9981 GB Notification: Performance of prepare postOptimizeDAE: time 3.164e-05/1.244, allocations: 34.47 kB / 1.27 GB, free: 174.7 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.398e-06/1.244, allocations: 5.188 kB / 1.27 GB, free: 174.7 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005954/1.245, allocations: 242.9 kB / 1.27 GB, free: 174.7 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000305/1.245, allocations: 79.25 kB / 1.27 GB, free: 174.6 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003911/1.249, allocations: 3.357 MB / 1.274 GB, free: 172.4 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001029/1.25, allocations: 103.5 kB / 1.274 GB, free: 172.4 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.488e-05/1.25, allocations: 27.31 kB / 1.274 GB, free: 172.4 MB / 0.9981 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 5 (pulse_m_flow.count,$PRE.pulse_m_flow.count,pulse_m_flow.T_start,$PRE.pulse_m_flow.T_start,$whenCondition1) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (35): * Single equations (assignments): 33 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(11,12)} Notification: Performance of prepare postOptimizeDAE: time 0.0002082/1.25, allocations: 221.3 kB / 1.274 GB, free: 172.2 MB / 0.9981 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001399/1.251, allocations: 107.3 kB / 1.274 GB, free: 172.2 MB / 0.9981 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001528/1.252, allocations: 0.8183 MB / 1.275 GB, free: 171.8 MB / 0.9981 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.441e-06/1.252, allocations: 4 kB / 1.275 GB, free: 171.8 MB / 0.9981 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.175e-06/1.252, allocations: 1.922 kB / 1.275 GB, free: 171.8 MB / 0.9981 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.644e-06/1.252, allocations: 2.438 kB / 1.275 GB, free: 171.8 MB / 0.9981 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 postOpt removeSimpleEquations (simulation): time 0.003102/1.255, allocations: 2.161 MB / 1.277 GB, free: 170.6 MB / 0.9981 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.971e-06/1.255, allocations: 6.469 kB / 1.277 GB, free: 170.6 MB / 0.9981 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002611/1.256, allocations: 49.2 kB / 1.277 GB, free: 170.6 MB / 0.9981 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005806/1.256, allocations: 241.3 kB / 1.277 GB, free: 170.5 MB / 0.9981 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.167e-05/1.256, allocations: 10.41 kB / 1.277 GB, free: 170.5 MB / 0.9981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0009813/1.257, allocations: 0.9396 MB / 1.278 GB, free: 169.9 MB / 0.9981 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 7.054e-06/1.257, allocations: 3.219 kB / 1.278 GB, free: 169.9 MB / 0.9981 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00169/1.259, allocations: 0.8774 MB / 1.279 GB, free: 169.4 MB / 0.9981 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0004239/1.259, allocations: 227.2 kB / 1.279 GB, free: 169.3 MB / 0.9981 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001198/1.259, allocations: 14.97 kB / 1.279 GB, free: 169.3 MB / 0.9981 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0006208/1.26, allocations: 70.7 kB / 1.279 GB, free: 169.2 MB / 0.9981 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001032/1.26, allocations: 34.98 kB / 1.279 GB, free: 169.2 MB / 0.9981 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.961e-05/1.26, allocations: 15.58 kB / 1.279 GB, free: 169.2 MB / 0.9981 GB Notification: Performance of sorting global known variables: time 0.001162/1.261, allocations: 0.8323 MB / 1.28 GB, free: 168.9 MB / 0.9981 GB Notification: Performance of sort global known variables: time 1.6e-07/1.261, allocations: 0 / 1.28 GB, free: 168.9 MB / 0.9981 GB Notification: Performance of remove unused functions: time 0.001565/1.263, allocations: 0.5004 MB / 1.281 GB, free: 168.9 MB / 0.9981 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,pulse_m_flow.T_start,pulse_m_flow.count) * Number of discrete states: 1 (pulse_m_flow.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (22): * Single equations (assignments): 19 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(11,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0005078/1.264, allocations: 185.2 kB / 1.281 GB, free: 168.8 MB / 0.9981 GB Notification: Performance of simCode: created initialization part: time 0.00277/1.266, allocations: 1.33 MB / 1.282 GB, free: 168.2 MB / 0.9981 GB Notification: Performance of simCode: created event and clocks part: time 3.747e-06/1.266, allocations: 4.062 kB / 1.282 GB, free: 168.2 MB / 0.9981 GB Notification: Performance of simCode: created simulation system equations: time 0.0006739/1.267, allocations: 323.9 kB / 1.283 GB, free: 168.1 MB / 0.9981 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00223/1.269, allocations: 0.5079 MB / 1.283 GB, free: 168 MB / 0.9981 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003269/1.273, allocations: 2.28 MB / 1.285 GB, free: 166.8 MB / 0.9981 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000839/1.273, allocations: 1.212 MB / 1.286 GB, free: 166 MB / 0.9981 GB Notification: Performance of simCode: alias equations: time 0.001118/1.274, allocations: 333 kB / 1.287 GB, free: 165.9 MB / 0.9981 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001718/1.275, allocations: 70.45 kB / 1.287 GB, free: 165.9 MB / 0.9981 GB Notification: Performance of SimCode: time 1.603e-06/1.275, allocations: 1.125 kB / 1.287 GB, free: 165.9 MB / 0.9981 GB Notification: Performance of Templates: time 0.03401/1.309, allocations: 20.9 MB / 1.307 GB, free: 154.1 MB / 0.9981 GB make -j1 -f Buildings_3.0.0_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp.makefile (rm -f Buildings_3.0.0_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp.pipe ; mkfifo Buildings_3.0.0_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp.pipe ; head -c 1048576 < Buildings_3.0.0_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp.pipe >> ../files/Buildings_3.0.0_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp.sim & ./Buildings_3.0.0_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_3.0.0_Buildings.Fluid.Examples.Performance.PressureDrop.SeriesParallelDp.pipe 2>&1)