Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.Movers.Examples.ClosedLoop_y.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/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 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo) Running command: "" <> buildModelFMU(Buildings.Fluid.Movers.Examples.ClosedLoop_y,fileNamePrefix="Buildings_maint_7_0_x_Buildings_Fluid_Movers_Examples_ClosedLoop_y",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Movers.Examples.ClosedLoop_y,fileNamePrefix="Buildings_maint_7_0_x_Buildings_Fluid_Movers_Examples_ClosedLoop_y",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.675/1.675, allocations: 252 MB / 267 MB, free: 10.95 MB / 218.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 3.2.3+maint.om/package.mo): time 0.001131/0.001131, allocations: 177.5 kB / 326.6 MB, free: 2.195 MB / 250.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 2.007/2.007, allocations: 205.4 MB / 0.5777 GB, free: 20.2 MB / 426.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 3.2.3+maint.om/package.mo): time 0.0007405/0.0007405, allocations: 92.23 kB / 0.6823 GB, free: 12.86 MB / 0.5105 GB Notification: Performance of FrontEnd - loaded program: time 0.0003908/0.0003911, allocations: 10.06 kB / 0.7964 GB, free: 135.1 MB / 0.6042 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2694/0.2698, allocations: 106.3 MB / 0.9003 GB, free: 63.78 MB / 0.6042 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Movers.Examples.ClosedLoop_y): time 0.8527/1.123, allocations: 187.5 MB / 1.083 GB, free: 3.98 MB / 0.698 GB Notification: Performance of NFInst.instExpressions: time 0.03495/1.158, allocations: 15.24 MB / 1.098 GB, free: 3.672 MB / 0.698 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003751/1.161, allocations: 47.66 kB / 1.098 GB, free: 3.672 MB / 0.698 GB Notification: Performance of NFTyping.typeComponents: time 0.003728/1.165, allocations: 0.6237 MB / 1.099 GB, free: 3.664 MB / 0.698 GB Notification: Performance of NFTyping.typeBindings: time 0.01011/1.175, allocations: 1.828 MB / 1.101 GB, free: 3.578 MB / 0.698 GB Notification: Performance of NFTyping.typeClassSections: time 0.0115/1.187, allocations: 2.184 MB / 1.103 GB, free: 3.516 MB / 0.698 GB Notification: Performance of NFFlatten.flatten: time 0.009792/1.197, allocations: 4.166 MB / 1.107 GB, free: 3.5 MB / 0.698 GB Notification: Performance of NFFlatten.resolveConnections: time 0.002596/1.199, allocations: 1.053 MB / 1.108 GB, free: 3.363 MB / 0.698 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005546/1.205, allocations: 1.578 MB / 1.11 GB, free: 3.348 MB / 0.698 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002544/1.207, allocations: 1.074 MB / 1.111 GB, free: 3.344 MB / 0.698 GB Notification: Performance of NFPackage.collectConstants: time 0.0003104/1.208, allocations: 60.69 kB / 1.111 GB, free: 3.344 MB / 0.698 GB Notification: Performance of NFFlatten.collectFunctions: time 0.005102/1.213, allocations: 1.557 MB / 1.112 GB, free: 3.316 MB / 0.698 GB Notification: Performance of NFScalarize.scalarize: time 0.0009292/1.214, allocations: 0.4908 MB / 1.113 GB, free: 3.316 MB / 0.698 GB Notification: Performance of NFVerifyModel.verify: time 0.001295/1.215, allocations: 361.3 kB / 1.113 GB, free: 19.28 MB / 0.7136 GB Notification: Performance of NFConvertDAE.convert: time 0.004424/1.22, allocations: 2.402 MB / 1.115 GB, free: 19.1 MB / 0.7136 GB Notification: Performance of FrontEnd - DAE generated: time 5.751e-06/1.22, allocations: 2.438 kB / 1.115 GB, free: 19.1 MB / 0.7136 GB Notification: Performance of FrontEnd: time 4.198e-06/1.22, allocations: 0 / 1.115 GB, free: 19.1 MB / 0.7136 GB Notification: Performance of Transformations before backend: time 5.435e-05/1.22, allocations: 1.969 kB / 1.115 GB, free: 19.1 MB / 0.7136 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 245 * Number of variables: 245 Notification: Performance of Generate backend data structure: time 0.004675/1.224, allocations: 1.953 MB / 1.117 GB, free: 18 MB / 0.7136 GB Notification: Performance of prepare preOptimizeDAE: time 5.593e-05/1.224, allocations: 13.34 kB / 1.117 GB, free: 18 MB / 0.7136 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0003469/1.225, allocations: 159.1 kB / 1.117 GB, free: 17.96 MB / 0.7136 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002881/1.228, allocations: 451.5 kB / 1.118 GB, free: 17.86 MB / 0.7136 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.003004/1.231, allocations: 1.281 MB / 1.119 GB, free: 17.48 MB / 0.7136 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.43e-05/1.231, allocations: 80.62 kB / 1.119 GB, free: 17.48 MB / 0.7136 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.000186/1.231, allocations: 107 kB / 1.119 GB, free: 17.48 MB / 0.7136 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002364/1.233, allocations: 1.185 MB / 1.12 GB, free: 17.32 MB / 0.7136 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.991e-05/1.233, allocations: 3.953 kB / 1.12 GB, free: 17.32 MB / 0.7136 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001009/1.234, allocations: 44.14 kB / 1.12 GB, free: 17.32 MB / 0.7136 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.566e-05/1.234, allocations: 34.88 kB / 1.121 GB, free: 17.32 MB / 0.7136 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001883/1.235, allocations: 0.8911 MB / 1.121 GB, free: 17.3 MB / 0.7136 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 0.007408/1.243, allocations: 4.903 MB / 1.126 GB, free: 15 MB / 0.7136 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001782/1.245, allocations: 0.7843 MB / 1.127 GB, free: 14.95 MB / 0.7136 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0007919/1.246, allocations: 428.3 kB / 1.127 GB, free: 14.94 MB / 0.7136 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002349/1.246, allocations: 106.7 kB / 1.127 GB, free: 14.84 MB / 0.7136 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0009202/1.247, allocations: 482.3 kB / 1.128 GB, free: 14.72 MB / 0.7136 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.0008357/1.248, allocations: 81.62 kB / 1.128 GB, free: 14.68 MB / 0.7136 GB Notification: Performance of pre-optimization done (n=69): time 3.727e-06/1.248, allocations: 0 / 1.128 GB, free: 14.68 MB / 0.7136 GB Notification: Performance of matching and sorting (n=69): time 0.003367/1.251, allocations: 1.231 MB / 1.129 GB, free: 14.31 MB / 0.7136 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001226/1.251, allocations: 137.2 kB / 1.129 GB, free: 14.15 MB / 0.7136 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002547/1.254, allocations: 1.181 MB / 1.13 GB, free: 13.8 MB / 0.7136 GB Notification: Performance of collectPreVariables (initialization): time 0.0001902/1.254, allocations: 50.73 kB / 1.131 GB, free: 13.76 MB / 0.7136 GB Notification: Performance of collectInitialEqns (initialization): time 0.00079/1.255, allocations: 0.6679 MB / 1.131 GB, free: 13.47 MB / 0.7136 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002782/1.255, allocations: 243.9 kB / 1.131 GB, free: 13.3 MB / 0.7136 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.323e-05/1.255, allocations: 14.91 kB / 1.131 GB, free: 13.3 MB / 0.7136 GB Notification: Performance of setup shared object (initialization): time 0.0002057/1.255, allocations: 344 kB / 1.132 GB, free: 12.98 MB / 0.7136 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008205/1.256, allocations: 346 kB / 1.132 GB, free: 12.93 MB / 0.7136 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0009422/1.257, allocations: 0.5976 MB / 1.133 GB, free: 12.56 MB / 0.7136 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0008311/1.258, allocations: 447.7 kB / 1.133 GB, free: 12.48 MB / 0.7136 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.212e-06/1.258, allocations: 9.219 kB / 1.133 GB, free: 12.48 MB / 0.7136 GB Notification: Performance of matching and sorting (n=109) (initialization): time 0.002576/1.26, allocations: 1.155 MB / 1.134 GB, free: 12.2 MB / 0.7136 GB Notification: Performance of prepare postOptimizeDAE: time 0.0002236/1.261, allocations: 285.5 kB / 1.134 GB, free: 11.87 MB / 0.7136 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.109e-05/1.261, allocations: 5.75 kB / 1.134 GB, free: 11.87 MB / 0.7136 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004337/1.261, allocations: 91.81 kB / 1.135 GB, free: 11.84 MB / 0.7136 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008748/1.262, allocations: 200.3 kB / 1.135 GB, free: 11.81 MB / 0.7136 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001106/1.263, allocations: 1.214 MB / 1.136 GB, free: 10.68 MB / 0.7136 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001436/1.265, allocations: 93.41 kB / 1.136 GB, free: 10.65 MB / 0.7136 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.372e-05/1.265, allocations: 44.92 kB / 1.136 GB, free: 10.65 MB / 0.7136 GB Notification: Performance of prepare postOptimizeDAE: time 1.607e-05/1.265, allocations: 6.219 kB / 1.136 GB, free: 10.65 MB / 0.7136 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.002231/1.267, allocations: 1.064 MB / 1.137 GB, free: 10.46 MB / 0.7136 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.213e-05/1.267, allocations: 11.91 kB / 1.137 GB, free: 10.46 MB / 0.7136 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006062/1.268, allocations: 147.9 kB / 1.137 GB, free: 10.42 MB / 0.7136 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007184/1.268, allocations: 185.8 kB / 1.137 GB, free: 10.39 MB / 0.7136 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004551/1.273, allocations: 2.813 MB / 1.14 GB, free: 8.348 MB / 0.7136 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001523/1.274, allocations: 89.53 kB / 1.14 GB, free: 8.32 MB / 0.7136 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 9.347e-05/1.275, allocations: 42.3 kB / 1.14 GB, free: 8.316 MB / 0.7136 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 6 ($whenCondition1,$PRE.y.T_start,y.T_start,$PRE.y.count,y.count,conPID.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (100): * Single equations (assignments): 94 * Array equations: 2 * Algorithm blocks: 1 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 1 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 1 {1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 4} Notification: Performance of prepare postOptimizeDAE: time 0.001142/1.276, allocations: 479 kB / 1.141 GB, free: 8.094 MB / 0.7136 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002929/1.276, allocations: 133.9 kB / 1.141 GB, free: 8.023 MB / 0.7136 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002087/1.278, allocations: 0.9317 MB / 1.142 GB, free: 7.793 MB / 0.7136 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.514e-06/1.278, allocations: 7.109 kB / 1.142 GB, free: 7.793 MB / 0.7136 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.11e-06/1.278, allocations: 7.953 kB / 1.142 GB, free: 7.785 MB / 0.7136 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001604/1.28, allocations: 0.8406 MB / 1.143 GB, free: 7.504 MB / 0.7136 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 0.004598/1.284, allocations: 2.256 MB / 1.145 GB, free: 6.629 MB / 0.7136 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.001e-06/1.284, allocations: 2.938 kB / 1.145 GB, free: 6.629 MB / 0.7136 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0007809/1.285, allocations: 158 kB / 1.145 GB, free: 6.602 MB / 0.7136 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0002703/1.285, allocations: 82.19 kB / 1.145 GB, free: 6.574 MB / 0.7136 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.605e-05/1.286, allocations: 23.17 kB / 1.145 GB, free: 6.57 MB / 0.7136 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0008263/1.286, allocations: 1.194 MB / 1.146 GB, free: 5.445 MB / 0.7136 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.105e-06/1.286, allocations: 7.125 kB / 1.146 GB, free: 5.441 MB / 0.7136 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002791/1.289, allocations: 1.399 MB / 1.148 GB, free: 5.02 MB / 0.7136 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0007671/1.29, allocations: 281.6 kB / 1.148 GB, free: 4.828 MB / 0.7136 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001404/1.29, allocations: 15.75 kB / 1.148 GB, free: 4.828 MB / 0.7136 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0008671/1.291, allocations: 100 kB / 1.148 GB, free: 4.793 MB / 0.7136 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000158/1.291, allocations: 53.81 kB / 1.148 GB, free: 4.77 MB / 0.7136 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.132e-05/1.291, allocations: 31.98 kB / 1.148 GB, free: 4.762 MB / 0.7136 GB Notification: Performance of sorting global known variables: time 0.001247/1.292, allocations: 0.7976 MB / 1.149 GB, free: 4.523 MB / 0.7136 GB Notification: Performance of sort global known variables: time 2.41e-07/1.292, allocations: 0 / 1.149 GB, free: 4.523 MB / 0.7136 GB Notification: Performance of remove unused functions: time 0.002704/1.295, allocations: 0.8413 MB / 1.15 GB, free: 4.383 MB / 0.7136 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 6 (fan.vol.dynBal.U,fan.vol.dynBal.m,fan.vol.dynBal.mXi[1],fan.filter.x[1],fan.filter.x[2],conPID.I.y) * Number of discrete variables: 3 ($whenCondition1,y.T_start,y.count) * Number of discrete states: 1 (y.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (66): * Single equations (assignments): 62 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * If-equations: 0 * Equation systems (linear and non-linear blocks): 1 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 1 {1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {1 5} Notification: Performance of Backend phase and start with SimCode phase: time 0.004622/1.3, allocations: 2.283 MB / 1.152 GB, free: 3.34 MB / 0.7136 GB Notification: Performance of simCode: created initialization part: time 0.003743/1.304, allocations: 1.643 MB / 1.154 GB, free: 2.832 MB / 0.7136 GB Notification: Performance of simCode: created event and clocks part: time 9.688e-06/1.304, allocations: 0 / 1.154 GB, free: 2.832 MB / 0.7136 GB Notification: Performance of simCode: created simulation system equations: time 0.0009234/1.305, allocations: 407.1 kB / 1.154 GB, free: 2.777 MB / 0.7136 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003553/1.308, allocations: 0.6528 MB / 1.155 GB, free: 2.574 MB / 0.7136 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01919/1.327, allocations: 8.781 MB / 1.163 GB, free: 14.11 MB / 0.7292 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001111/1.329, allocations: 1.296 MB / 1.164 GB, free: 12.84 MB / 0.7292 GB Notification: Performance of simCode: alias equations: time 0.001852/1.33, allocations: 331.4 kB / 1.165 GB, free: 12.51 MB / 0.7292 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000756/1.331, allocations: 0.578 MB / 1.165 GB, free: 12.37 MB / 0.7292 GB Notification: Performance of SimCode: time 1.794e-06/1.331, allocations: 0 / 1.165 GB, free: 12.37 MB / 0.7292 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.08459/1.416, allocations: 41.63 MB / 1.206 GB, free: 3.27 MB / 0.7605 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0002889/1.416, allocations: 270.8 kB / 1.206 GB, free: 2.91 MB / 0.7605 GB Notification: Performance of buildModelFMU: Generate platform static: time 3.35/4.767, allocations: 0 / 1.206 GB, free: 2.91 MB / 0.7605 GB (rm -f Buildings_maint.7.0.x_Buildings.Fluid.Movers.Examples.ClosedLoop_y.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.Movers.Examples.ClosedLoop_y.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.Movers.Examples.ClosedLoop_y.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.Movers.Examples.ClosedLoop_y.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator --tempDir=temp_Buildings_maint_7_0_x_Buildings_Fluid_Movers_Examples_ClosedLoop_y_fmu --startTime=0 --stopTime=3600 --timeout=50 --tolerance=1e-06 Buildings_maint_7_0_x_Buildings_Fluid_Movers_Examples_ClosedLoop_y.fmu > Buildings_maint.7.0.x_Buildings.Fluid.Movers.Examples.ClosedLoop_y.pipe 2>&1)