Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.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/IDEAS 3.0.0-master/package.mo", uses=false) Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-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: "" <> buildModelFMU(IDEAS.Fluid.Interfaces.Examples.ReverseFlowMassExchanger,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Interfaces_Examples_ReverseFlowMassExchanger",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(IDEAS.Fluid.Interfaces.Examples.ReverseFlowMassExchanger,fileNamePrefix="IDEAS_dev_IDEAS_Fluid_Interfaces_Examples_ReverseFlowMassExchanger",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 0.001386/0.001386, allocations: 108 kB / 15.6 MB, free: 132 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001539/0.001539, allocations: 194.2 kB / 16.53 MB, free: 6.391 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.338/1.338, allocations: 222.9 MB / 240.2 MB, free: 4.406 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.9151/0.9151, allocations: 135.1 MB / 425.5 MB, free: 11.92 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.002261/0.002261, allocations: 64.44 kB / 0.5054 GB, free: 5.246 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1542/0.1564, allocations: 80.92 MB / 0.5845 GB, free: 4.48 MB / 494.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Interfaces.Examples.ReverseFlowMassExchanger): time 0.8243/0.9808, allocations: 328.4 MB / 0.9051 GB, free: 1.398 MB / 0.67 GB Notification: Performance of NFInst.instExpressions: time 0.03183/1.013, allocations: 30.04 MB / 0.9345 GB, free: 1.188 MB / 0.67 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003413/1.016, allocations: 97.78 kB / 0.9346 GB, free: 1.188 MB / 0.67 GB Notification: Performance of NFTyping.typeComponents: time 0.004892/1.021, allocations: 2.092 MB / 0.9366 GB, free: 1.152 MB / 0.67 GB Notification: Performance of NFTyping.typeBindings: time 0.01128/1.032, allocations: 4.945 MB / 0.9414 GB, free: 0.9102 MB / 0.67 GB Notification: Performance of NFTyping.typeClassSections: time 0.008732/1.041, allocations: 3.634 MB / 0.945 GB, free: 0.7773 MB / 0.67 GB Notification: Performance of NFFlatten.flatten: time 0.008501/1.05, allocations: 6.907 MB / 0.9517 GB, free: 0.7578 MB / 0.67 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00426/1.054, allocations: 2.872 MB / 0.9545 GB, free: 16.37 MB / 0.6856 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01046/1.064, allocations: 5.268 MB / 0.9597 GB, free: 16.16 MB / 0.6856 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003821/1.068, allocations: 2.416 MB / 0.9621 GB, free: 15.72 MB / 0.6856 GB Notification: Performance of NFPackage.collectConstants: time 0.0009332/1.069, allocations: 296 kB / 0.9623 GB, free: 15.72 MB / 0.6856 GB Notification: Performance of NFFlatten.collectFunctions: time 0.009039/1.078, allocations: 4.808 MB / 0.967 GB, free: 14.9 MB / 0.6856 GB Notification: Performance of NFScalarize.scalarize: time 0.001427/1.08, allocations: 1.066 MB / 0.9681 GB, free: 14.52 MB / 0.6856 GB Notification: Performance of NFVerifyModel.verify: time 0.002808/1.082, allocations: 1.743 MB / 0.9698 GB, free: 13.95 MB / 0.6856 GB Notification: Performance of NFConvertDAE.convert: time 0.008926/1.091, allocations: 5.711 MB / 0.9754 GB, free: 11.64 MB / 0.6856 GB Notification: Performance of FrontEnd - DAE generated: time 4.778e-06/1.091, allocations: 0 / 0.9754 GB, free: 11.64 MB / 0.6856 GB Notification: Performance of FrontEnd: time 1.513e-06/1.091, allocations: 2.906 kB / 0.9754 GB, free: 11.64 MB / 0.6856 GB Notification: Performance of Transformations before backend: time 0.0001268/1.092, allocations: 4 kB / 0.9754 GB, free: 11.64 MB / 0.6856 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 536 * Number of variables: 536 Notification: Performance of Generate backend data structure: time 0.009064/1.101, allocations: 3.698 MB / 0.979 GB, free: 9.125 MB / 0.6856 GB Notification: Performance of prepare preOptimizeDAE: time 4.51e-05/1.101, allocations: 11 kB / 0.979 GB, free: 9.125 MB / 0.6856 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0006833/1.101, allocations: 304 kB / 0.9793 GB, free: 8.891 MB / 0.6856 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.009675/1.111, allocations: 1.461 MB / 0.9807 GB, free: 8.199 MB / 0.6856 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004387/1.115, allocations: 1.979 MB / 0.9826 GB, free: 6.242 MB / 0.6856 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.001309/1.117, allocations: 398 kB / 0.983 GB, free: 5.852 MB / 0.6856 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0006256/1.117, allocations: 223.9 kB / 0.9832 GB, free: 5.633 MB / 0.6856 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.006472/1.124, allocations: 3.067 MB / 0.9862 GB, free: 2.445 MB / 0.6856 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.924e-05/1.124, allocations: 1.875 kB / 0.9862 GB, free: 2.445 MB / 0.6856 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002935/1.124, allocations: 92 kB / 0.9863 GB, free: 2.355 MB / 0.6856 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 8.147e-05/1.124, allocations: 92 kB / 0.9864 GB, free: 2.262 MB / 0.6856 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.007035/1.131, allocations: 3.145 MB / 0.9895 GB, free: 15.12 MB / 0.7012 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 0.02262/1.154, allocations: 14.17 MB / 1.003 GB, free: 96 kB / 0.7012 GB Notification: Performance of preOpt comSubExp (simulation): time 0.004025/1.158, allocations: 1.641 MB / 1.005 GB, free: 14.45 MB / 0.7169 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001716/1.16, allocations: 0.772 MB / 1.006 GB, free: 13.68 MB / 0.7169 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0005985/1.16, allocations: 329.7 kB / 1.006 GB, free: 13.31 MB / 0.7169 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.913e-05/1.161, allocations: 51.56 kB / 1.006 GB, free: 13.25 MB / 0.7169 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001134/1.162, allocations: 201.3 kB / 1.006 GB, free: 13.06 MB / 0.7169 GB Notification: Performance of pre-optimization done (n=110): time 5.56e-06/1.162, allocations: 0 / 1.006 GB, free: 13.06 MB / 0.7169 GB Notification: Performance of matching and sorting (n=110): time 0.005808/1.167, allocations: 2.356 MB / 1.009 GB, free: 10.7 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.846e-05/1.168, allocations: 67.59 kB / 1.009 GB, free: 10.62 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004005/1.172, allocations: 2.536 MB / 1.011 GB, free: 8.07 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.000193/1.172, allocations: 65.7 kB / 1.011 GB, free: 8 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.0009221/1.173, allocations: 1.271 MB / 1.012 GB, free: 6.723 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002839/1.173, allocations: 389.1 kB / 1.013 GB, free: 6.344 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006351/1.174, allocations: 390.9 kB / 1.013 GB, free: 5.957 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 7.77e-05/1.174, allocations: 305.1 kB / 1.013 GB, free: 5.656 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002553/1.176, allocations: 0.9767 MB / 1.014 GB, free: 4.676 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002942/1.179, allocations: 1.609 MB / 1.016 GB, free: 2.809 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004612/1.184, allocations: 2.276 MB / 1.018 GB, free: 392 kB / 0.7169 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 9.688e-06/1.184, allocations: 8 kB / 1.018 GB, free: 384 kB / 0.7169 GB Notification: Performance of matching and sorting (n=216) (initialization): time 0.006697/1.191, allocations: 2.823 MB / 1.021 GB, free: 13.61 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 7.465e-05/1.191, allocations: 78.3 kB / 1.021 GB, free: 13.52 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.834e-05/1.191, allocations: 16 kB / 1.021 GB, free: 13.51 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.602e-05/1.191, allocations: 20.75 kB / 1.021 GB, free: 13.49 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002978/1.194, allocations: 0.5705 MB / 1.022 GB, free: 12.95 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001189/1.195, allocations: 2.384 MB / 1.024 GB, free: 10.48 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003427/1.198, allocations: 319.8 kB / 1.024 GB, free: 10.17 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000203/1.199, allocations: 91.89 kB / 1.024 GB, free: 10.08 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.003355/1.202, allocations: 1.417 MB / 1.026 GB, free: 8.656 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002977/1.205, allocations: 1.6 MB / 1.027 GB, free: 6.793 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.004597/1.21, allocations: 2.262 MB / 1.029 GB, free: 4.379 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.058e-05/1.21, allocations: 8 kB / 1.029 GB, free: 4.371 MB / 0.7325 GB Notification: Performance of matching and sorting (n=216) (initialization_lambda0): time 0.006612/1.216, allocations: 2.818 MB / 1.032 GB, free: 1.605 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 5.415e-05/1.216, allocations: 70.77 kB / 1.032 GB, free: 1.527 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.927e-05/1.216, allocations: 16 kB / 1.032 GB, free: 1.512 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.089e-05/1.216, allocations: 24 kB / 1.032 GB, free: 1.488 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002442/1.219, allocations: 0.5158 MB / 1.033 GB, free: 0.9961 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.061e-05/1.219, allocations: 33.23 kB / 1.033 GB, free: 0.9688 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003339/1.222, allocations: 320.2 kB / 1.033 GB, free: 0.6562 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000171/1.222, allocations: 91.95 kB / 1.033 GB, free: 0.5664 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 61 * Number of states: 0 () * Number of discrete variables: 4 (masExcRev.i2_w,masExcRev.i1_w,masExcFor.i2_w,masExcFor.i1_w) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (214): * Single equations (assignments): 208 * Array equations: 0 * Algorithm blocks: 2 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 4 systems {1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0004394/1.223, allocations: 301 kB / 1.034 GB, free: 300 kB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005018/1.223, allocations: 264.8 kB / 1.034 GB, free: 32 kB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004316/1.228, allocations: 1.851 MB / 1.036 GB, free: 14.17 MB / 0.7481 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.309e-05/1.228, allocations: 12 kB / 1.036 GB, free: 14.16 MB / 0.7481 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.001e-06/1.228, allocations: 3.094 kB / 1.036 GB, free: 14.16 MB / 0.7481 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.899e-06/1.228, allocations: 3.984 kB / 1.036 GB, free: 14.15 MB / 0.7481 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.008013/1.236, allocations: 4.479 MB / 1.04 GB, free: 9.594 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.918e-06/1.236, allocations: 4 kB / 1.04 GB, free: 9.59 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001638/1.237, allocations: 313.9 kB / 1.04 GB, free: 9.297 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.468e-05/1.237, allocations: 12 kB / 1.04 GB, free: 9.285 MB / 0.7481 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 9.12e-05/1.237, allocations: 39.92 kB / 1.04 GB, free: 9.246 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.000965/1.238, allocations: 2.369 MB / 1.043 GB, free: 6.793 MB / 0.7481 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.121e-06/1.238, allocations: 7.094 kB / 1.043 GB, free: 6.789 MB / 0.7481 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00419/1.243, allocations: 1.972 MB / 1.045 GB, free: 4.73 MB / 0.7481 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0009941/1.244, allocations: 0.525 MB / 1.045 GB, free: 4.184 MB / 0.7481 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004125/1.244, allocations: 31.94 kB / 1.045 GB, free: 4.152 MB / 0.7481 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002262/1.246, allocations: 190.8 kB / 1.045 GB, free: 3.969 MB / 0.7481 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001315/1.246, allocations: 78 kB / 1.045 GB, free: 3.898 MB / 0.7481 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001405/1.247, allocations: 71.89 kB / 1.045 GB, free: 3.828 MB / 0.7481 GB Notification: Performance of sorting global known variables: time 0.002838/1.249, allocations: 1.751 MB / 1.047 GB, free: 2.074 MB / 0.7481 GB Notification: Performance of sort global known variables: time 2.01e-07/1.249, allocations: 0 / 1.047 GB, free: 2.074 MB / 0.7481 GB Notification: Performance of remove unused functions: time 0.003001/1.253, allocations: 1.287 MB / 1.048 GB, free: 0.7852 MB / 0.7481 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 25 * 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 simulation (110): * Single equations (assignments): 106 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 4 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 4 systems {1, 1, 1, 1} * Without analytic Jacobian (size): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.004621/1.257, allocations: 2.786 MB / 1.051 GB, free: 13.95 MB / 0.7637 GB Notification: Performance of simCode: created initialization part: time 0.009166/1.266, allocations: 3.793 MB / 1.055 GB, free: 10.23 MB / 0.7637 GB Notification: Performance of simCode: created event and clocks part: time 8.396e-06/1.266, allocations: 4 kB / 1.055 GB, free: 10.22 MB / 0.7637 GB Notification: Performance of simCode: created simulation system equations: time 0.001897/1.268, allocations: 0.8064 MB / 1.056 GB, free: 9.453 MB / 0.7637 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005453/1.274, allocations: 1.206 MB / 1.057 GB, free: 8.277 MB / 0.7637 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.03511/1.309, allocations: 21.61 MB / 1.078 GB, free: 0.8281 MB / 0.7794 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001345/1.31, allocations: 1.697 MB / 1.08 GB, free: 15.09 MB / 0.795 GB Notification: Performance of simCode: alias equations: time 0.003519/1.314, allocations: 0.7855 MB / 1.08 GB, free: 14.3 MB / 0.795 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001401/1.315, allocations: 1.015 MB / 1.081 GB, free: 13.29 MB / 0.795 GB Notification: Performance of SimCode: time 6.21e-07/1.315, allocations: 0 / 1.081 GB, free: 13.29 MB / 0.795 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.277/1.592, allocations: 66.47 MB / 1.146 GB, free: 11.62 MB / 0.8575 GB Notification: Performance of buildModelFMU: Generate platform static: time 14.53/16.12, allocations: 7.375 kB / 1.146 GB, free: 11.62 MB / 0.8575 GB (rm -f IDEAS_dev_IDEAS.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_IDEAS_dev_IDEAS_Fluid_Interfaces_Examples_ReverseFlowMassExchanger_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 IDEAS_dev_IDEAS_Fluid_Interfaces_Examples_ReverseFlowMassExchanger.fmu > IDEAS_dev_IDEAS.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe 2>&1)