Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.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/BuildSysPro 3.6.0/package.mo", uses=false) Using package BuildSysPro with version 3.5.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/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(BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger") translateModel(BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001148/0.001148, allocations: 106.3 kB / 15.98 MB, free: 6.355 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001216/0.001217, allocations: 192.5 kB / 16.91 MB, free: 6.191 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.318/1.318, allocations: 222.9 MB / 240.6 MB, free: 15.41 MB / 206.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/Building/BuildingEnvelope/HeatTransfer/package.mo:2:1-40:17:writable] Warning: Soil_case_nappe was referenced in the package.order file, but was not found in package.mo, Soil_case_nappe/package.mo or Soil_case_nappe.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/package.mo): time 0.8352/0.8352, allocations: 143.1 MB / 433.8 MB, free: 12.2 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.00119/0.00119, allocations: 64.14 kB / 0.5143 GB, free: 15.51 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3866/0.3878, allocations: 82.03 MB / 0.5944 GB, free: 16.48 MB / 446.1 MB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger): time 0.7138/1.102, allocations: 325 MB / 0.9118 GB, free: 9.266 MB / 0.6387 GB Notification: Performance of NFInst.instExpressions: time 0.03843/1.14, allocations: 29.94 MB / 0.9411 GB, free: 11.25 MB / 0.67 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.005358/1.145, allocations: 91.38 kB / 0.9412 GB, free: 11.16 MB / 0.67 GB Notification: Performance of NFTyping.typeComponents: time 0.006396/1.152, allocations: 1.851 MB / 0.943 GB, free: 9.301 MB / 0.67 GB Notification: Performance of NFTyping.typeBindings: time 0.0139/1.166, allocations: 4.653 MB / 0.9475 GB, free: 4.633 MB / 0.67 GB Notification: Performance of NFTyping.typeClassSections: time 0.009569/1.175, allocations: 3.391 MB / 0.9508 GB, free: 1.27 MB / 0.67 GB Notification: Performance of NFFlatten.flatten: time 0.01063/1.186, allocations: 6.954 MB / 0.9576 GB, free: 10.29 MB / 0.6856 GB Notification: Performance of NFFlatten.resolveConnections: time 0.004642/1.191, allocations: 2.796 MB / 0.9604 GB, free: 7.438 MB / 0.6856 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01511/1.206, allocations: 5.242 MB / 0.9655 GB, free: 2.203 MB / 0.6856 GB Notification: Performance of NFSimplifyModel.simplify: time 0.005925/1.212, allocations: 2.537 MB / 0.968 GB, free: 15.67 MB / 0.7012 GB Notification: Performance of NFPackage.collectConstants: time 0.001555/1.213, allocations: 296 kB / 0.9682 GB, free: 15.38 MB / 0.7012 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0132/1.227, allocations: 5.089 MB / 0.9732 GB, free: 10.28 MB / 0.7012 GB Notification: Performance of NFScalarize.scalarize: time 0.002685/1.229, allocations: 1.075 MB / 0.9743 GB, free: 9.199 MB / 0.7012 GB Notification: Performance of NFVerifyModel.verify: time 0.005977/1.235, allocations: 1.742 MB / 0.976 GB, free: 7.449 MB / 0.7012 GB Notification: Performance of NFConvertDAE.convert: time 0.009892/1.245, allocations: 4.49 MB / 0.9803 GB, free: 2.949 MB / 0.7012 GB Notification: Performance of FrontEnd - DAE generated: time 7.855e-06/1.245, allocations: 0 / 0.9803 GB, free: 2.949 MB / 0.7012 GB Notification: Performance of FrontEnd: time 2.274e-06/1.245, allocations: 0 / 0.9803 GB, free: 2.949 MB / 0.7012 GB Notification: Performance of Transformations before backend: time 0.0001986/1.246, allocations: 0 / 0.9803 GB, free: 2.949 MB / 0.7012 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 0.01147/1.257, allocations: 3.711 MB / 0.984 GB, free: 15.15 MB / 0.7169 GB Notification: Performance of prepare preOptimizeDAE: time 4.843e-05/1.257, allocations: 16.03 kB / 0.984 GB, free: 15.14 MB / 0.7169 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01055/1.268, allocations: 1.464 MB / 0.9854 GB, free: 13.67 MB / 0.7169 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00691/1.275, allocations: 1.983 MB / 0.9873 GB, free: 11.61 MB / 0.7169 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.001745/1.276, allocations: 395.8 kB / 0.9877 GB, free: 11.21 MB / 0.7169 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001695/1.278, allocations: 220 kB / 0.9879 GB, free: 11 MB / 0.7169 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.009878/1.288, allocations: 3.067 MB / 0.9909 GB, free: 7.797 MB / 0.7169 GB Notification: Performance of preOpt findStateOrder (simulation): time 4.36e-05/1.288, allocations: 3.938 kB / 0.9909 GB, free: 7.793 MB / 0.7169 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003208/1.288, allocations: 92 kB / 0.991 GB, free: 7.703 MB / 0.7169 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001166/1.289, allocations: 84 kB / 0.9911 GB, free: 7.617 MB / 0.7169 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.007181/1.296, allocations: 3.154 MB / 0.9942 GB, free: 4.445 MB / 0.7169 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 0.02375/1.32, allocations: 14.09 MB / 1.008 GB, free: 5.242 MB / 0.7325 GB Notification: Performance of preOpt comSubExp (simulation): time 0.00412/1.324, allocations: 1.648 MB / 1.01 GB, free: 3.586 MB / 0.7325 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001627/1.325, allocations: 0.7728 MB / 1.01 GB, free: 2.809 MB / 0.7325 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0006239/1.326, allocations: 321.2 kB / 1.011 GB, free: 2.441 MB / 0.7325 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.657e-05/1.326, allocations: 55.5 kB / 1.011 GB, free: 2.379 MB / 0.7325 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001595/1.328, allocations: 202 kB / 1.011 GB, free: 2.18 MB / 0.7325 GB Notification: Performance of pre-optimization done (n=110): time 3.467e-06/1.328, allocations: 0 / 1.011 GB, free: 2.18 MB / 0.7325 GB Notification: Performance of matching and sorting (n=110): time 0.006173/1.334, allocations: 2.356 MB / 1.013 GB, free: 15.81 MB / 0.7481 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.45e-05/1.334, allocations: 68.34 kB / 1.013 GB, free: 15.73 MB / 0.7481 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.006179/1.34, allocations: 2.54 MB / 1.016 GB, free: 13.18 MB / 0.7481 GB Notification: Performance of collectPreVariables (initialization): time 0.0005175/1.341, allocations: 53.7 kB / 1.016 GB, free: 13.12 MB / 0.7481 GB Notification: Performance of collectInitialEqns (initialization): time 0.001546/1.342, allocations: 1.268 MB / 1.017 GB, free: 11.83 MB / 0.7481 GB Notification: Performance of collectInitialBindings (initialization): time 0.0006987/1.343, allocations: 394.5 kB / 1.017 GB, free: 11.44 MB / 0.7481 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.001106/1.344, allocations: 395 kB / 1.018 GB, free: 11.05 MB / 0.7481 GB Notification: Performance of setup shared object (initialization): time 0.0001247/1.344, allocations: 305.1 kB / 1.018 GB, free: 10.75 MB / 0.7481 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002533/1.347, allocations: 0.9806 MB / 1.019 GB, free: 9.766 MB / 0.7481 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.002954/1.35, allocations: 1.602 MB / 1.021 GB, free: 7.887 MB / 0.7481 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004565/1.354, allocations: 2.284 MB / 1.023 GB, free: 5.402 MB / 0.7481 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.721e-05/1.354, allocations: 4 kB / 1.023 GB, free: 5.398 MB / 0.7481 GB Notification: Performance of matching and sorting (n=216) (initialization): time 0.006923/1.361, allocations: 2.813 MB / 1.026 GB, free: 2.562 MB / 0.7481 GB Notification: Performance of prepare postOptimizeDAE: time 8.644e-05/1.361, allocations: 71.39 kB / 1.026 GB, free: 2.48 MB / 0.7481 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.868e-05/1.361, allocations: 20.06 kB / 1.026 GB, free: 2.461 MB / 0.7481 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.335e-05/1.362, allocations: 20 kB / 1.026 GB, free: 2.441 MB / 0.7481 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002983/1.365, allocations: 0.5772 MB / 1.026 GB, free: 1.863 MB / 0.7481 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001445/1.366, allocations: 2.387 MB / 1.029 GB, free: 15.38 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003844/1.37, allocations: 406.9 kB / 1.029 GB, free: 14.99 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000242/1.37, allocations: 95.95 kB / 1.029 GB, free: 14.89 MB / 0.7637 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0035/1.374, allocations: 1.406 MB / 1.03 GB, free: 13.48 MB / 0.7637 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.003039/1.377, allocations: 1.606 MB / 1.032 GB, free: 11.61 MB / 0.7637 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.004536/1.381, allocations: 2.262 MB / 1.034 GB, free: 9.148 MB / 0.7637 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.294e-05/1.381, allocations: 4 kB / 1.034 GB, free: 9.145 MB / 0.7637 GB Notification: Performance of matching and sorting (n=216) (initialization_lambda0): time 0.006712/1.388, allocations: 2.82 MB / 1.037 GB, free: 6.301 MB / 0.7637 GB Notification: Performance of prepare postOptimizeDAE: time 7.251e-05/1.388, allocations: 71.41 kB / 1.037 GB, free: 6.219 MB / 0.7637 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.308e-05/1.388, allocations: 15.94 kB / 1.037 GB, free: 6.203 MB / 0.7637 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.516e-05/1.388, allocations: 20 kB / 1.037 GB, free: 6.184 MB / 0.7637 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002515/1.391, allocations: 0.5193 MB / 1.038 GB, free: 5.664 MB / 0.7637 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.569e-05/1.391, allocations: 31.88 kB / 1.038 GB, free: 5.633 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003948/1.395, allocations: 407.7 kB / 1.038 GB, free: 5.234 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002239/1.395, allocations: 96.22 kB / 1.038 GB, free: 5.141 MB / 0.7637 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 0.0006272/1.396, allocations: 303.7 kB / 1.038 GB, free: 4.836 MB / 0.7637 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0007933/1.396, allocations: 268.7 kB / 1.039 GB, free: 4.57 MB / 0.7637 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004507/1.401, allocations: 1.847 MB / 1.04 GB, free: 2.707 MB / 0.7637 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.326e-05/1.401, allocations: 15.98 kB / 1.04 GB, free: 2.691 MB / 0.7637 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.765e-06/1.401, allocations: 0 / 1.04 GB, free: 2.691 MB / 0.7637 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.004e-05/1.401, allocations: 3.984 kB / 1.04 GB, free: 2.688 MB / 0.7637 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.2981/1.699, allocations: 4.485 MB / 1.045 GB, free: 331.6 MB / 0.7637 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.191e-05/1.699, allocations: 5.938 kB / 1.045 GB, free: 331.6 MB / 0.7637 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001684/1.701, allocations: 310.1 kB / 1.045 GB, free: 331.5 MB / 0.7637 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.501e-05/1.701, allocations: 7.875 kB / 1.045 GB, free: 331.5 MB / 0.7637 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 9.386e-05/1.701, allocations: 31.11 kB / 1.045 GB, free: 331.5 MB / 0.7637 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0006966/1.702, allocations: 2.369 MB / 1.047 GB, free: 329.2 MB / 0.7637 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.833e-06/1.702, allocations: 11.12 kB / 1.047 GB, free: 329.2 MB / 0.7637 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004196/1.706, allocations: 1.97 MB / 1.049 GB, free: 328.4 MB / 0.7637 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001259/1.707, allocations: 0.5279 MB / 1.05 GB, free: 328.2 MB / 0.7637 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0003823/1.707, allocations: 30.22 kB / 1.05 GB, free: 328.2 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002507/1.71, allocations: 263.1 kB / 1.05 GB, free: 328.2 MB / 0.7637 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001748/1.71, allocations: 80.78 kB / 1.05 GB, free: 328.1 MB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001744/1.71, allocations: 62.48 kB / 1.05 GB, free: 328.1 MB / 0.7637 GB Notification: Performance of sorting global known variables: time 0.003539/1.714, allocations: 1.754 MB / 1.052 GB, free: 327.5 MB / 0.7637 GB Notification: Performance of sort global known variables: time 5.01e-07/1.714, allocations: 0 / 1.052 GB, free: 327.5 MB / 0.7637 GB Notification: Performance of remove unused functions: time 0.004514/1.718, allocations: 1.305 MB / 1.053 GB, free: 327.4 MB / 0.7637 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 0.0007886/1.719, allocations: 383 kB / 1.054 GB, free: 327.3 MB / 0.7637 GB Notification: Performance of simCode: created initialization part: time 0.008392/1.728, allocations: 3.799 MB / 1.057 GB, free: 326.1 MB / 0.7637 GB Notification: Performance of simCode: created event and clocks part: time 1.023e-05/1.728, allocations: 5.391 kB / 1.057 GB, free: 326.1 MB / 0.7637 GB Notification: Performance of simCode: created simulation system equations: time 0.001671/1.729, allocations: 0.8056 MB / 1.058 GB, free: 325.9 MB / 0.7637 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005309/1.735, allocations: 1.209 MB / 1.059 GB, free: 325.6 MB / 0.7637 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006988/1.742, allocations: 5.297 MB / 1.065 GB, free: 322.6 MB / 0.7637 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000898/1.743, allocations: 1.673 MB / 1.066 GB, free: 321.8 MB / 0.7637 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0008678/1.743, allocations: 230.5 kB / 1.066 GB, free: 321.8 MB / 0.7637 GB Notification: Performance of SimCode: time 5.51e-07/1.743, allocations: 0 / 1.066 GB, free: 321.8 MB / 0.7637 GB Notification: Performance of Templates: time 0.0716/1.815, allocations: 86.09 MB / 1.15 GB, free: 238.2 MB / 0.7637 GB make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.makefile (rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.sim & ./BuildSysPro_BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildSysPro_BuildSysPro.IBPSA.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe 2>&1)