Running: ./testmodel.py --libraries=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_latest_Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer.conf.json loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 9.0.0-master/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false) loadFile("/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) Using package ModelicaServices with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo) Using package Modelica with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo) Using package Complex with version 4.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo) Using package Buildings with version 9.0.0 (/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 9.0.0-master/package.mo) Running command: translateModel(Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_latest_Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer") translateModel(Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_latest_Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer") Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Buildings 9.0.0-master/package.mo): time 2.21/2.21, allocations: 306.1 MB / 321.4 MB, free: 10.75 MB / 250.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001022/0.001022, allocations: 179.2 kB / 393.1 MB, free: 4.082 MB / 314.7 MB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.361/1.361, allocations: 225.7 MB / 0.6743 GB, free: 12.54 MB / 0.4948 GB Notification: Performance of loadFile(/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/converted-libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0007389/0.0007389, allocations: 103.4 kB / 0.7935 GB, free: 40.16 MB / 0.5417 GB Notification: Performance of FrontEnd - loaded program: time 0.0003442/0.0003444, allocations: 8 kB / 0.9224 GB, free: 8.637 MB / 0.6355 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.5901/0.5905, allocations: 121.3 MB / 1.041 GB, free: 58.77 MB / 0.698 GB Notification: Performance of NFInst.instantiate(Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer): time 0.001708/0.5922, allocations: 1.464 MB / 1.042 GB, free: 57.76 MB / 0.698 GB Notification: Performance of NFInst.instExpressions: time 0.001166/0.5934, allocations: 1.073 MB / 1.043 GB, free: 56.87 MB / 0.698 GB Notification: Performance of NFInst.updateImplicitVariability: time 8.362e-05/0.5935, allocations: 4.094 kB / 1.043 GB, free: 56.87 MB / 0.698 GB Notification: Performance of NFTyping.typeComponents: time 0.0001053/0.5936, allocations: 13.03 kB / 1.043 GB, free: 56.86 MB / 0.698 GB Notification: Performance of NFTyping.typeBindings: time 6.308e-05/0.5937, allocations: 36.5 kB / 1.043 GB, free: 56.83 MB / 0.698 GB Notification: Performance of NFTyping.typeClassSections: time 0.0007855/0.5945, allocations: 362 kB / 1.044 GB, free: 56.65 MB / 0.698 GB Notification: Performance of NFFlatten.flatten: time 0.0003322/0.5948, allocations: 390 kB / 1.044 GB, free: 56.5 MB / 0.698 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0001605/0.595, allocations: 61.42 kB / 1.044 GB, free: 56.47 MB / 0.698 GB Notification: Performance of NFEvalConstants.evaluate: time 0.000126/0.5951, allocations: 135.5 kB / 1.044 GB, free: 56.43 MB / 0.698 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001412/0.5953, allocations: 131.6 kB / 1.044 GB, free: 56.38 MB / 0.698 GB Notification: Performance of NFPackage.collectConstants: time 5.084e-05/0.5953, allocations: 19.22 kB / 1.044 GB, free: 56.38 MB / 0.698 GB Notification: Performance of NFFlatten.collectFunctions: time 9.095e-05/0.5954, allocations: 32.09 kB / 1.044 GB, free: 56.37 MB / 0.698 GB Notification: Performance of NFScalarize.scalarize: time 4.192e-05/0.5955, allocations: 45.36 kB / 1.045 GB, free: 56.35 MB / 0.698 GB Notification: Performance of NFVerifyModel.verify: time 0.000167/0.5957, allocations: 171.7 kB / 1.045 GB, free: 56.25 MB / 0.698 GB Notification: Performance of NFConvertDAE.convert: time 0.0003411/0.596, allocations: 369.9 kB / 1.045 GB, free: 56.15 MB / 0.698 GB Notification: Performance of FrontEnd - DAE generated: time 5.601e-06/0.596, allocations: 0.8438 kB / 1.045 GB, free: 56.15 MB / 0.698 GB Notification: Performance of FrontEnd: time 3.576e-06/0.596, allocations: 1.156 kB / 1.045 GB, free: 56.15 MB / 0.698 GB Notification: Performance of Transformations before backend: time 5.441e-06/0.596, allocations: 0.7812 kB / 1.045 GB, free: 56.15 MB / 0.698 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 40 * Number of variables: 40 Notification: Performance of Generate backend data structure: time 0.0005812/0.5966, allocations: 0.5554 MB / 1.046 GB, free: 55.62 MB / 0.698 GB Notification: Performance of prepare preOptimizeDAE: time 3.542e-05/0.5967, allocations: 8.594 kB / 1.046 GB, free: 55.62 MB / 0.698 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 7.308e-05/0.5968, allocations: 36.44 kB / 1.046 GB, free: 55.61 MB / 0.698 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006629/0.5974, allocations: 311.5 kB / 1.046 GB, free: 55.37 MB / 0.698 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.387e-05/0.5975, allocations: 20.7 kB / 1.046 GB, free: 55.36 MB / 0.698 GB Notification: Performance of preOpt expandDerOperator (simulation): time 5.827e-05/0.5975, allocations: 37.69 kB / 1.046 GB, free: 55.36 MB / 0.698 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0002708/0.5978, allocations: 181.8 kB / 1.046 GB, free: 55.28 MB / 0.698 GB Notification: Performance of preOpt findStateOrder (simulation): time 9.658e-06/0.5978, allocations: 4.844 kB / 1.046 GB, free: 55.27 MB / 0.698 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.388e-05/0.5979, allocations: 13.14 kB / 1.046 GB, free: 55.27 MB / 0.698 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.045e-05/0.5979, allocations: 6.453 kB / 1.046 GB, free: 55.27 MB / 0.698 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0001836/0.5981, allocations: 106 kB / 1.046 GB, free: 55.24 MB / 0.698 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0007599/0.5988, allocations: 0.5985 MB / 1.047 GB, free: 54.84 MB / 0.698 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0002964/0.5991, allocations: 209.7 kB / 1.047 GB, free: 54.74 MB / 0.698 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0001138/0.5993, allocations: 83.88 kB / 1.047 GB, free: 54.7 MB / 0.698 GB Notification: Performance of preOpt evalFunc (simulation): time 1.262e-05/0.5993, allocations: 6.875 kB / 1.047 GB, free: 54.7 MB / 0.698 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0003826/0.5997, allocations: 247.5 kB / 1.047 GB, free: 54.61 MB / 0.698 GB Notification: Performance of pre-optimization done (n=36): time 1.904e-06/0.5997, allocations: 1.094 kB / 1.047 GB, free: 54.61 MB / 0.698 GB Notification: Performance of matching and sorting (n=36): time 0.000642/0.6003, allocations: 405.3 kB / 1.048 GB, free: 54.47 MB / 0.698 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.7e-05/0.6004, allocations: 71.69 kB / 1.048 GB, free: 54.4 MB / 0.698 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001363/0.6005, allocations: 189 kB / 1.048 GB, free: 54.26 MB / 0.698 GB Notification: Performance of collectPreVariables (initialization): time 4.898e-05/0.6006, allocations: 47.48 kB / 1.048 GB, free: 54.22 MB / 0.698 GB Notification: Performance of collectInitialEqns (initialization): time 8.113e-05/0.6007, allocations: 138.6 kB / 1.048 GB, free: 54.1 MB / 0.698 GB Notification: Performance of collectInitialBindings (initialization): time 5.52e-05/0.6007, allocations: 83.31 kB / 1.048 GB, free: 54.04 MB / 0.698 GB Notification: Performance of simplifyInitialFunctions (initialization): time 3.439e-05/0.6008, allocations: 16.25 kB / 1.048 GB, free: 54.03 MB / 0.698 GB Notification: Performance of setup shared object (initialization): time 7.23e-05/0.6008, allocations: 336.5 kB / 1.049 GB, free: 53.71 MB / 0.698 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002713/0.6011, allocations: 150.8 kB / 1.049 GB, free: 53.66 MB / 0.698 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003177/0.6014, allocations: 271.6 kB / 1.049 GB, free: 53.47 MB / 0.698 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004274/0.6019, allocations: 419.5 kB / 1.049 GB, free: 53.14 MB / 0.698 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.416e-06/0.6019, allocations: 1 kB / 1.049 GB, free: 53.14 MB / 0.698 GB Notification: Performance of matching and sorting (n=67) (initialization): time 0.0008294/0.6027, allocations: 0.5812 MB / 1.05 GB, free: 52.85 MB / 0.698 GB Notification: Performance of prepare postOptimizeDAE: time 6.389e-05/0.6028, allocations: 98.88 kB / 1.05 GB, free: 52.75 MB / 0.698 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.718e-06/0.6028, allocations: 3.938 kB / 1.05 GB, free: 52.75 MB / 0.698 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.183e-05/0.6028, allocations: 5.719 kB / 1.05 GB, free: 52.75 MB / 0.698 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001713/0.603, allocations: 41.41 kB / 1.05 GB, free: 52.74 MB / 0.698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.308e-05/0.603, allocations: 7.547 kB / 1.05 GB, free: 52.74 MB / 0.698 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004919/0.6035, allocations: 134.6 kB / 1.05 GB, free: 52.71 MB / 0.698 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.999e-05/0.6036, allocations: 30.7 kB / 1.05 GB, free: 52.71 MB / 0.698 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * Number of states: 0 () * Number of discrete variables: 56 ($PRE.accuTimer3.yAcc,accuTimer3.yAcc,$PRE.accuTimer2.yAcc,accuTimer2.yAcc,$PRE.accuTimer1.yAcc,accuTimer1.yAcc,$PRE.accuTimer.yAcc,accuTimer.yAcc,$PRE.resetTimer.yAcc,resetTimer.yAcc,$whenCondition15,$whenCondition16,$whenCondition13,$whenCondition14,$whenCondition11,$whenCondition12,$whenCondition3,$PRE.booPul1.y,booPul1.y,$whenCondition9,$PRE.pre.u,pre.y,con.y,$whenCondition8,$whenCondition7,$PRE.accuTimer2.entryTime,accuTimer2.entryTime,$PRE.booPul2.y,booPul2.y,$PRE.accuTimer2.reset_internal,accuTimer2.reset_internal,$whenCondition10,$whenCondition5,$whenCondition6,$whenCondition4,$whenCondition2,$whenCondition1,$PRE.resetTimer.entryTime,resetTimer.entryTime,$PRE.accuTimer.entryTime,accuTimer.entryTime,$PRE.accuTimer1.entryTime,accuTimer1.entryTime,$PRE.accuTimer3.entryTime,accuTimer3.entryTime,pre.u,$PRE.booPul.y,booPul.y,$PRE.resetTimer.reset_internal,resetTimer.reset_internal,$PRE.accuTimer.reset_internal,accuTimer.reset_internal,$PRE.accuTimer1.reset_internal,accuTimer1.reset_internal,$PRE.accuTimer3.reset_internal,accuTimer3.reset_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (61): * Single equations (assignments): 58 * Array equations: 0 * Algorithm blocks: 3 * 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 0.0001515/0.6037, allocations: 184.7 kB / 1.05 GB, free: 52.55 MB / 0.698 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 3.46e-05/0.6038, allocations: 23.81 kB / 1.051 GB, free: 52.54 MB / 0.698 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 4.859e-05/0.6038, allocations: 26.16 kB / 1.051 GB, free: 52.52 MB / 0.698 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.29e-06/0.6038, allocations: 3.188 kB / 1.051 GB, free: 52.52 MB / 0.698 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.753e-06/0.6039, allocations: 6.031 kB / 1.051 GB, free: 52.51 MB / 0.698 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.819e-06/0.6039, allocations: 1.594 kB / 1.051 GB, free: 52.51 MB / 0.698 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0007504/0.6046, allocations: 0.7091 MB / 1.051 GB, free: 52.06 MB / 0.698 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.154e-06/0.6046, allocations: 0 / 1.051 GB, free: 52.06 MB / 0.698 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 6.122e-05/0.6047, allocations: 16.97 kB / 1.051 GB, free: 52.06 MB / 0.698 GB Notification: Performance of postOpt tearingSystem (simulation): time 3.467e-06/0.6047, allocations: 1.781 kB / 1.051 GB, free: 52.06 MB / 0.698 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.313e-05/0.6047, allocations: 10.58 kB / 1.051 GB, free: 52.05 MB / 0.698 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 5.651e-06/0.6048, allocations: 12.8 kB / 1.051 GB, free: 52.05 MB / 0.698 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 9.52e-07/0.6048, allocations: 0 / 1.051 GB, free: 52.05 MB / 0.698 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0004323/0.6052, allocations: 425.8 kB / 1.052 GB, free: 51.82 MB / 0.698 GB Notification: Performance of postOpt removeConstants (simulation): time 3.38e-05/0.6052, allocations: 96.98 kB / 1.052 GB, free: 51.71 MB / 0.698 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.048e-05/0.6053, allocations: 11.7 kB / 1.052 GB, free: 51.71 MB / 0.698 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 9.543e-05/0.6054, allocations: 12.7 kB / 1.052 GB, free: 51.71 MB / 0.698 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 6.616e-05/0.6055, allocations: 22.05 kB / 1.052 GB, free: 51.7 MB / 0.698 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.161e-05/0.6055, allocations: 25.2 kB / 1.052 GB, free: 51.7 MB / 0.698 GB Notification: Performance of sorting global known variables: time 6.781e-05/0.6056, allocations: 128.6 kB / 1.052 GB, free: 51.6 MB / 0.698 GB Notification: Performance of sort global known variables: time 1.41e-07/0.6056, allocations: 2.062 kB / 1.052 GB, free: 51.6 MB / 0.698 GB Notification: Performance of remove unused functions: time 0.000352/0.6059, allocations: 99.58 kB / 1.052 GB, free: 51.58 MB / 0.698 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 31 (pre.y,$whenCondition15,$whenCondition16,$whenCondition13,$whenCondition14,$whenCondition11,$whenCondition12,$whenCondition9,$whenCondition10,$whenCondition8,$whenCondition7,$whenCondition5,$whenCondition6,$whenCondition3,$whenCondition4,$whenCondition2,$whenCondition1,resetTimer.entryTime,resetTimer.yAcc,accuTimer.entryTime,accuTimer.yAcc,accuTimer1.entryTime,accuTimer1.yAcc,accuTimer2.entryTime,accuTimer2.yAcc,accuTimer3.entryTime,accuTimer3.yAcc,booPul1.y,pre.u,booPul.y,booPul2.y) * Number of discrete states: 6 (pre.u,accuTimer3.y,accuTimer2.y,accuTimer1.y,accuTimer.y,resetTimer.y) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (36): * Single equations (assignments): 23 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 13 * 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 0.000158/0.6061, allocations: 136.1 kB / 1.052 GB, free: 51.48 MB / 0.698 GB Notification: Performance of simCode: created initialization part: time 0.0006282/0.6067, allocations: 0.5288 MB / 1.053 GB, free: 51.17 MB / 0.698 GB Notification: Performance of simCode: created event and clocks part: time 2.053e-06/0.6067, allocations: 0 / 1.053 GB, free: 51.17 MB / 0.698 GB Notification: Performance of simCode: created simulation system equations: time 0.0001779/0.6069, allocations: 141 kB / 1.053 GB, free: 51.12 MB / 0.698 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003704/0.6073, allocations: 40.7 kB / 1.053 GB, free: 51.11 MB / 0.698 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0006242/0.6079, allocations: 495.6 kB / 1.053 GB, free: 50.8 MB / 0.698 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001547/0.6081, allocations: 0.7381 MB / 1.054 GB, free: 50.1 MB / 0.698 GB Notification: Performance of simCode: alias equations: time 9.967e-05/0.6082, allocations: 37.89 kB / 1.054 GB, free: 50.09 MB / 0.698 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 4.685e-05/0.6083, allocations: 22.88 kB / 1.054 GB, free: 50.08 MB / 0.698 GB Notification: Performance of SimCode: time 3.4e-07/0.6083, allocations: 7.938 kB / 1.054 GB, free: 50.08 MB / 0.698 GB Notification: Performance of Templates: time 0.006672/0.6149, allocations: 3.562 MB / 1.058 GB, free: 49.8 MB / 0.698 GB make -j1 -f Buildings_latest_Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer.makefile (rm -f Buildings_latest_Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer.pipe ; mkfifo Buildings_latest_Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer.pipe ; head -c 1048576 < Buildings_latest_Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer.pipe >> ../files/Buildings_latest_Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer.sim & ./Buildings_latest_Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_latest_Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation.Timer.pipe 2>&1)