Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_9_Buildings.Controls.OBC.CDL.Utilities.Validation.SunRiseSetNegativeStartTime.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 9.1.3-maint.9.1.x/package.mo", uses=false) Using package Buildings with version 9.1.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/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: "" <> buildModelFMU(Buildings.Controls.OBC.CDL.Utilities.Validation.SunRiseSetNegativeStartTime,fileNamePrefix="Buildings_9_Buildings_Controls_OBC_CDL_Utilities_Validation_SunRiseSetNegativeStartTime",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Controls.OBC.CDL.Utilities.Validation.SunRiseSetNegativeStartTime,fileNamePrefix="Buildings_9_Buildings_Controls_OBC_CDL_Utilities_Validation_SunRiseSetNegativeStartTime",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00187/0.00187, 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 0.002152/0.002152, allocations: 194.6 kB / 16.26 MB, free: 6.625 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.411/1.411, allocations: 222.9 MB / 239.9 MB, free: 4.52 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.3-maint.9.1.x/package.mo): time 2.399/2.399, allocations: 390.2 MB / 0.6644 GB, free: 0.5391 MB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.001481/0.001481, allocations: 67.91 kB / 0.8122 GB, free: 14.66 MB / 0.67 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.6458/0.6473, allocations: 140.4 MB / 0.9492 GB, free: 9.141 MB / 0.7169 GB Notification: Performance of NFInst.instantiate(Buildings.Controls.OBC.CDL.Utilities.Validation.SunRiseSetNegativeStartTime): time 0.00226/0.6496, allocations: 0.9554 MB / 0.9502 GB, free: 8.402 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.002952/0.6525, allocations: 2.466 MB / 0.9526 GB, free: 6.418 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001367/0.6527, allocations: 1.125 kB / 0.9526 GB, free: 6.418 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 5.736e-05/0.6528, allocations: 11.86 kB / 0.9526 GB, free: 6.406 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.0002683/0.6531, allocations: 42.31 kB / 0.9526 GB, free: 6.371 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.001828/0.6549, allocations: 454.7 kB / 0.9531 GB, free: 6.078 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.0005638/0.6555, allocations: 315.5 kB / 0.9534 GB, free: 5.902 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 9.441e-05/0.6556, allocations: 14.17 kB / 0.9534 GB, free: 5.895 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0004162/0.656, allocations: 150.4 kB / 0.9535 GB, free: 5.812 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.000312/0.6564, allocations: 146.5 kB / 0.9537 GB, free: 5.719 MB / 0.7169 GB Notification: Performance of NFPackage.collectConstants: time 8.393e-05/0.6564, allocations: 23.84 kB / 0.9537 GB, free: 5.719 MB / 0.7169 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0009133/0.6574, allocations: 323 kB / 0.954 GB, free: 5.586 MB / 0.7169 GB Notification: Performance of NFScalarize.scalarize: time 8.832e-05/0.6575, allocations: 60.42 kB / 0.9541 GB, free: 5.539 MB / 0.7169 GB Notification: Performance of NFVerifyModel.verify: time 0.000173/0.6576, allocations: 128.4 kB / 0.9542 GB, free: 5.449 MB / 0.7169 GB Notification: Performance of NFConvertDAE.convert: time 0.001045/0.6587, allocations: 0.5364 MB / 0.9547 GB, free: 5.117 MB / 0.7169 GB Notification: Performance of FrontEnd - DAE generated: time 7.004e-06/0.6587, allocations: 1.219 kB / 0.9547 GB, free: 5.117 MB / 0.7169 GB Notification: Performance of FrontEnd: time 2.445e-06/0.6587, allocations: 4 kB / 0.9547 GB, free: 5.113 MB / 0.7169 GB Notification: Performance of Transformations before backend: time 1.036e-05/0.6587, allocations: 0 / 0.9547 GB, free: 5.113 MB / 0.7169 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 32 * Number of variables: 32 Notification: Performance of Generate backend data structure: time 0.001582/0.6603, allocations: 0.664 MB / 0.9554 GB, free: 4.539 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 5.058e-05/0.6604, allocations: 11.75 kB / 0.9554 GB, free: 4.539 MB / 0.7169 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.852e-05/0.6605, allocations: 45.92 kB / 0.9554 GB, free: 4.488 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0001018/0.6606, allocations: 20.22 kB / 0.9554 GB, free: 4.48 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0001143/0.6607, allocations: 196.1 kB / 0.9556 GB, free: 4.258 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001374/0.6608, allocations: 132 kB / 0.9557 GB, free: 4.117 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 4.649e-05/0.6609, allocations: 22.52 kB / 0.9558 GB, free: 4.109 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0003293/0.6612, allocations: 240.7 kB / 0.956 GB, free: 3.887 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.175e-05/0.6612, allocations: 5.531 kB / 0.956 GB, free: 3.883 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.743e-05/0.6613, allocations: 2.219 kB / 0.956 GB, free: 3.883 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.54e-05/0.6613, allocations: 7.797 kB / 0.956 GB, free: 3.879 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0002339/0.6615, allocations: 111.2 kB / 0.9561 GB, free: 3.824 MB / 0.7169 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0004147/0.662, allocations: 400.3 kB / 0.9565 GB, free: 3.398 MB / 0.7169 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00143/0.6634, allocations: 0.4919 MB / 0.957 GB, free: 2.969 MB / 0.7169 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001932/0.6636, allocations: 157.1 kB / 0.9571 GB, free: 2.828 MB / 0.7169 GB Notification: Performance of preOpt evalFunc (simulation): time 4.13e-05/0.6637, allocations: 16.05 kB / 0.9571 GB, free: 2.816 MB / 0.7169 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0004903/0.6642, allocations: 320.7 kB / 0.9575 GB, free: 2.539 MB / 0.7169 GB Notification: Performance of pre-optimization done (n=40): time 1.074e-05/0.6642, allocations: 0 / 0.9575 GB, free: 2.539 MB / 0.7169 GB Notification: Performance of matching and sorting (n=40): time 0.001188/0.6654, allocations: 414.7 kB / 0.9578 GB, free: 2.332 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001629/0.6655, allocations: 355.4 kB / 0.9582 GB, free: 1.914 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0002123/0.6658, allocations: 169.7 kB / 0.9584 GB, free: 1.77 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 6.816e-05/0.6658, allocations: 43.19 kB / 0.9584 GB, free: 1.727 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 6.397e-05/0.6659, allocations: 93.17 kB / 0.9585 GB, free: 1.637 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001256/0.666, allocations: 117.1 kB / 0.9586 GB, free: 1.535 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001815/0.6662, allocations: 95.31 kB / 0.9587 GB, free: 1.473 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 0.0001089/0.6664, allocations: 332.8 kB / 0.959 GB, free: 1.145 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003327/0.6667, allocations: 114 kB / 0.9591 GB, free: 1.094 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003769/0.6671, allocations: 168.4 kB / 0.9593 GB, free: 0.9883 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006985/0.6678, allocations: 262.5 kB / 0.9595 GB, free: 0.8477 MB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.593e-06/0.6678, allocations: 1.125 kB / 0.9595 GB, free: 0.8477 MB / 0.7169 GB Notification: Performance of matching and sorting (n=56) (initialization): time 0.0009744/0.6688, allocations: 383.3 kB / 0.9599 GB, free: 0.6562 MB / 0.7169 GB Notification: Performance of prepare postOptimizeDAE: time 2.856e-05/0.6688, allocations: 5.438 kB / 0.9599 GB, free: 0.6562 MB / 0.7169 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.214e-05/0.6688, allocations: 8.781 kB / 0.9599 GB, free: 0.6484 MB / 0.7169 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.174e-05/0.6689, allocations: 3.281 kB / 0.9599 GB, free: 0.6484 MB / 0.7169 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004592/0.6693, allocations: 81.25 kB / 0.96 GB, free: 0.6211 MB / 0.7169 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.82e-05/0.6694, allocations: 3.281 kB / 0.96 GB, free: 0.6211 MB / 0.7169 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003593/0.6697, allocations: 50 kB / 0.96 GB, free: 0.5898 MB / 0.7169 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.371e-05/0.6698, allocations: 23.8 kB / 0.9601 GB, free: 0.5781 MB / 0.7169 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 4 * Number of states: 0 () * Number of discrete variables: 28 (sunRiseSetSyd.sunUp,sunRiseSetSyd.nextSunSet,$PRE.sunRiseSetSyd.nextSunSet,sunRiseSetSyd.nextSunRise,$PRE.sunRiseSetSyd.nextSunRise,$whenCondition7,$whenCondition8,sunRiseSetAntarctic.sunUp,sunRiseSetAntarctic.nextSunSet,$PRE.sunRiseSetAntarctic.nextSunSet,sunRiseSetAntarctic.nextSunRise,$PRE.sunRiseSetAntarctic.nextSunRise,$whenCondition5,$whenCondition6,sunRiseSetSf.sunUp,sunRiseSetSf.nextSunSet,$PRE.sunRiseSetSf.nextSunSet,sunRiseSetSf.nextSunRise,$PRE.sunRiseSetSf.nextSunRise,$whenCondition3,$whenCondition4,sunRiseSetArctic.sunUp,sunRiseSetArctic.nextSunSet,$PRE.sunRiseSetArctic.nextSunSet,sunRiseSetArctic.nextSunRise,$PRE.sunRiseSetArctic.nextSunRise,$whenCondition1,$whenCondition2) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (56): * Single equations (assignments): 56 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.0002113/0.67, allocations: 165.1 kB / 0.9602 GB, free: 432 kB / 0.7169 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001003/0.6701, allocations: 31.84 kB / 0.9602 GB, free: 412 kB / 0.7169 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0008082/0.6709, allocations: 346.9 kB / 0.9606 GB, free: 204 kB / 0.7169 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.692e-05/0.671, allocations: 12.78 kB / 0.9606 GB, free: 200 kB / 0.7169 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.457e-05/0.671, allocations: 3.562 kB / 0.9606 GB, free: 200 kB / 0.7169 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.13e-05/0.671, allocations: 10.58 kB / 0.9606 GB, free: 192 kB / 0.7169 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0004788/0.6715, allocations: 350.4 kB / 0.9609 GB, free: 15.86 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.594e-06/0.6715, allocations: 2.719 kB / 0.9609 GB, free: 15.86 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003255/0.6718, allocations: 74.7 kB / 0.961 GB, free: 15.84 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.221e-05/0.6719, allocations: 4.906 kB / 0.961 GB, free: 15.84 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.005e-05/0.6719, allocations: 20.11 kB / 0.961 GB, free: 15.83 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 9.928e-06/0.6719, allocations: 4.5 kB / 0.961 GB, free: 15.83 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.887e-06/0.6719, allocations: 7.344 kB / 0.961 GB, free: 15.83 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0008495/0.6728, allocations: 0.4983 MB / 0.9615 GB, free: 15.49 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002009/0.673, allocations: 144.9 kB / 0.9617 GB, free: 15.35 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 6.806e-05/0.6731, allocations: 19.12 kB / 0.9617 GB, free: 15.34 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002856/0.6734, allocations: 31.31 kB / 0.9617 GB, free: 15.32 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001334/0.6735, allocations: 56.72 kB / 0.9618 GB, free: 15.29 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 4.984e-05/0.6736, allocations: 20.75 kB / 0.9618 GB, free: 15.28 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.0001321/0.6737, allocations: 125.2 kB / 0.9619 GB, free: 15.18 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.5e-07/0.6737, allocations: 3.938 kB / 0.9619 GB, free: 15.18 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.0008001/0.6745, allocations: 211 kB / 0.9621 GB, free: 15.11 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 12 * Number of states: 0 () * Number of discrete variables: 20 ($whenCondition8,$whenCondition7,sunRiseSetSyd.nextSunRise,sunRiseSetSyd.nextSunSet,sunRiseSetSyd.sunUp,$whenCondition6,$whenCondition5,sunRiseSetAntarctic.nextSunRise,sunRiseSetAntarctic.nextSunSet,sunRiseSetAntarctic.sunUp,$whenCondition4,$whenCondition3,sunRiseSetSf.nextSunRise,sunRiseSetSf.nextSunSet,sunRiseSetSf.sunUp,$whenCondition2,$whenCondition1,sunRiseSetArctic.nextSunRise,sunRiseSetArctic.nextSunSet,sunRiseSetArctic.sunUp) * Number of discrete states: 8 (sunRiseSetArctic.nextSunSet,sunRiseSetArctic.nextSunRise,sunRiseSetSf.nextSunSet,sunRiseSetSf.nextSunRise,sunRiseSetAntarctic.nextSunSet,sunRiseSetAntarctic.nextSunRise,sunRiseSetSyd.nextSunSet,sunRiseSetSyd.nextSunRise) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (60): * Single equations (assignments): 52 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 8 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.00174/0.6763, allocations: 1.243 MB / 0.9633 GB, free: 14.15 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.0007922/0.6771, allocations: 359.3 kB / 0.9637 GB, free: 13.99 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 4.058e-06/0.6771, allocations: 0 / 0.9637 GB, free: 13.99 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.0003435/0.6774, allocations: 188.1 kB / 0.9638 GB, free: 13.91 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003343/0.6778, allocations: 35.86 kB / 0.9639 GB, free: 13.89 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004357/0.6822, allocations: 2.848 MB / 0.9667 GB, free: 11.65 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003505/0.6825, allocations: 0.7607 MB / 0.9674 GB, free: 10.92 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.0002743/0.6828, allocations: 54.55 kB / 0.9675 GB, free: 10.89 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001981/0.683, allocations: 98.25 kB / 0.9676 GB, free: 10.83 MB / 0.7325 GB Notification: Performance of SimCode: time 6.32e-07/0.683, allocations: 0 / 0.9676 GB, free: 10.83 MB / 0.7325 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.02385/0.7069, allocations: 7.601 MB / 0.975 GB, free: 6.891 MB / 0.7325 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002106/0.7071, allocations: 235.7 kB / 0.9752 GB, free: 6.633 MB / 0.7325 GB Notification: Performance of buildModelFMU: Generate platform static: time 2.096/2.803, allocations: 112 / 0.9752 GB, free: 6.633 MB / 0.7325 GB (rm -f Buildings_9_Buildings.Controls.OBC.CDL.Utilities.Validation.SunRiseSetNegativeStartTime.pipe ; mkfifo Buildings_9_Buildings.Controls.OBC.CDL.Utilities.Validation.SunRiseSetNegativeStartTime.pipe ; head -c 1048576 < Buildings_9_Buildings.Controls.OBC.CDL.Utilities.Validation.SunRiseSetNegativeStartTime.pipe >> ../files/Buildings_9_Buildings.Controls.OBC.CDL.Utilities.Validation.SunRiseSetNegativeStartTime.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=Buildings_9_Buildings.Controls.OBC.CDL.Utilities.Validation.SunRiseSetNegativeStartTime_res.mat --tempDir=temp_Buildings_9_Buildings_Controls_OBC_CDL_Utilities_Validation_SunRiseSetNegativeStartTime_fmu --startTime=-43200 --stopTime=259200 --timeout=50 --tolerance=1e-06 Buildings_9_Buildings_Controls_OBC_CDL_Utilities_Validation_SunRiseSetNegativeStartTime.fmu > Buildings_9_Buildings.Controls.OBC.CDL.Utilities.Validation.SunRiseSetNegativeStartTime.pipe 2>&1)