Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildingSystems_BuildingSystems.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/NcDataReader2 2.5.1-master/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo", uses=false) Using package BuildingSystems with version 2.0.0-beta (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo) Using package NcDataReader2 with version 2.5.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-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: translateModel(BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger") translateModel(BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001332/0.001332, allocations: 101.1 kB / 16.27 MB, free: 6.414 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001322/0.001322, allocations: 190.3 kB / 17.2 MB, free: 5.953 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.234/1.234, allocations: 222.9 MB / 240.9 MB, free: 15.27 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/NcDataReader2 2.5.1-master/package.mo): time 0.002091/0.002091, allocations: 290.3 kB / 291.3 MB, free: 14.54 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildingSystems 2.0.0-master/package.mo): time 0.8922/0.8922, allocations: 169.3 MB / 0.4988 GB, free: 4.496 MB / 382.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001775/0.001775, allocations: 102 kB / 0.5959 GB, free: 15.13 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1458/0.1476, allocations: 86.97 MB / 0.6808 GB, free: 8.164 MB / 494.1 MB Notification: Performance of NFInst.instantiate(BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger): time 0.9053/1.053, allocations: 328.4 MB / 1.002 GB, free: 1.637 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.02917/1.082, allocations: 30.07 MB / 1.031 GB, free: 1.422 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003771/1.086, allocations: 99.69 kB / 1.031 GB, free: 1.422 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.0047/1.091, allocations: 2.094 MB / 1.033 GB, free: 1.383 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.01202/1.103, allocations: 4.979 MB / 1.038 GB, free: 1.148 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.008415/1.111, allocations: 3.628 MB / 1.041 GB, free: 1.004 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.008706/1.12, allocations: 6.928 MB / 1.048 GB, free: 0.9766 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.004123/1.124, allocations: 2.876 MB / 1.051 GB, free: 16.58 MB / 0.7325 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01146/1.136, allocations: 5.27 MB / 1.056 GB, free: 16.46 MB / 0.7325 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004411/1.14, allocations: 2.417 MB / 1.058 GB, free: 16.09 MB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.0007883/1.141, allocations: 296.6 kB / 1.059 GB, free: 16.09 MB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.009354/1.15, allocations: 4.805 MB / 1.063 GB, free: 16 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.001584/1.152, allocations: 1.075 MB / 1.065 GB, free: 15.6 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.00283/1.155, allocations: 1.742 MB / 1.066 GB, free: 15.04 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.009777/1.164, allocations: 5.709 MB / 1.072 GB, free: 12.73 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 6.532e-06/1.164, allocations: 3.125 kB / 1.072 GB, free: 12.73 MB / 0.7325 GB Notification: Performance of FrontEnd: time 1.613e-06/1.164, allocations: 0 / 1.072 GB, free: 12.73 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 0.0001243/1.165, allocations: 0 / 1.072 GB, free: 12.73 MB / 0.7325 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 0.007823/1.172, allocations: 3.703 MB / 1.075 GB, free: 10.63 MB / 0.7325 GB Notification: Performance of prepare preOptimizeDAE: time 3.812e-05/1.172, allocations: 9.719 kB / 1.075 GB, free: 10.63 MB / 0.7325 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.009208/1.182, allocations: 1.467 MB / 1.077 GB, free: 10.08 MB / 0.7325 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004031/1.186, allocations: 1.983 MB / 1.079 GB, free: 9.141 MB / 0.7325 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.001166/1.187, allocations: 394.3 kB / 1.079 GB, free: 9.043 MB / 0.7325 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004309/1.187, allocations: 222.5 kB / 1.079 GB, free: 9.043 MB / 0.7325 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.005237/1.193, allocations: 3.065 MB / 1.082 GB, free: 8.055 MB / 0.7325 GB Notification: Performance of preOpt findStateOrder (simulation): time 3.53e-05/1.193, allocations: 9.781 kB / 1.082 GB, free: 8.051 MB / 0.7325 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0002363/1.193, allocations: 92.31 kB / 1.082 GB, free: 8.047 MB / 0.7325 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 8.103e-05/1.193, allocations: 87.98 kB / 1.083 GB, free: 7.957 MB / 0.7325 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.006814/1.2, allocations: 3.146 MB / 1.086 GB, free: 5.09 MB / 0.7325 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 0.02219/1.222, allocations: 14.14 MB / 1.099 GB, free: 6.09 MB / 0.7481 GB Notification: Performance of preOpt comSubExp (simulation): time 0.003916/1.226, allocations: 1.649 MB / 1.101 GB, free: 4.445 MB / 0.7481 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001651/1.228, allocations: 0.7737 MB / 1.102 GB, free: 3.672 MB / 0.7481 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0006038/1.228, allocations: 321.9 kB / 1.102 GB, free: 3.309 MB / 0.7481 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.704e-05/1.228, allocations: 47.56 kB / 1.102 GB, free: 3.254 MB / 0.7481 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.001233/1.23, allocations: 201.4 kB / 1.102 GB, free: 3.059 MB / 0.7481 GB Notification: Performance of pre-optimization done (n=110): time 6.542e-06/1.23, allocations: 3.984 kB / 1.102 GB, free: 3.055 MB / 0.7481 GB Notification: Performance of matching and sorting (n=110): time 0.005883/1.236, allocations: 2.363 MB / 1.105 GB, free: 0.7031 MB / 0.7481 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.764e-05/1.236, allocations: 64.34 kB / 1.105 GB, free: 0.625 MB / 0.7481 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.004194/1.24, allocations: 2.544 MB / 1.107 GB, free: 14.06 MB / 0.7637 GB Notification: Performance of collectPreVariables (initialization): time 0.00022/1.24, allocations: 53.7 kB / 1.107 GB, free: 14 MB / 0.7637 GB Notification: Performance of collectInitialEqns (initialization): time 0.0009717/1.241, allocations: 1.268 MB / 1.108 GB, free: 12.73 MB / 0.7637 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003314/1.241, allocations: 387.8 kB / 1.109 GB, free: 12.35 MB / 0.7637 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000685/1.242, allocations: 387 kB / 1.109 GB, free: 11.97 MB / 0.7637 GB Notification: Performance of setup shared object (initialization): time 0.0001014/1.242, allocations: 301.1 kB / 1.11 GB, free: 11.67 MB / 0.7637 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002482/1.245, allocations: 0.9689 MB / 1.11 GB, free: 10.7 MB / 0.7637 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00296/1.248, allocations: 1.584 MB / 1.112 GB, free: 8.859 MB / 0.7637 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.004599/1.252, allocations: 2.249 MB / 1.114 GB, free: 6.477 MB / 0.7637 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.31e-05/1.252, allocations: 7.938 kB / 1.114 GB, free: 6.469 MB / 0.7637 GB Notification: Performance of matching and sorting (n=210) (initialization): time 0.006755/1.259, allocations: 2.781 MB / 1.117 GB, free: 3.738 MB / 0.7637 GB Notification: Performance of prepare postOptimizeDAE: time 7.212e-05/1.259, allocations: 78.36 kB / 1.117 GB, free: 3.652 MB / 0.7637 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.262e-05/1.259, allocations: 16.73 kB / 1.117 GB, free: 3.637 MB / 0.7637 GB Notification: Performance of postOpt tearingSystem (initialization): time 3.878e-05/1.259, allocations: 27.94 kB / 1.117 GB, free: 3.609 MB / 0.7637 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.00289/1.262, allocations: 0.5589 MB / 1.118 GB, free: 3.078 MB / 0.7637 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001308/1.263, allocations: 2.384 MB / 1.12 GB, free: 0.6133 MB / 0.7637 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003492/1.267, allocations: 311.9 kB / 1.12 GB, free: 316 kB / 0.7637 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002547/1.267, allocations: 91.95 kB / 1.12 GB, free: 224 kB / 0.7637 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.003489/1.271, allocations: 1.403 MB / 1.122 GB, free: 14.82 MB / 0.7794 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.003003/1.274, allocations: 1.589 MB / 1.123 GB, free: 12.98 MB / 0.7794 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.004555/1.278, allocations: 2.237 MB / 1.125 GB, free: 10.59 MB / 0.7794 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.156e-05/1.278, allocations: 4 kB / 1.125 GB, free: 10.59 MB / 0.7794 GB Notification: Performance of matching and sorting (n=210) (initialization_lambda0): time 0.006744/1.285, allocations: 2.781 MB / 1.128 GB, free: 7.863 MB / 0.7794 GB Notification: Performance of prepare postOptimizeDAE: time 7.309e-05/1.285, allocations: 71.39 kB / 1.128 GB, free: 7.781 MB / 0.7794 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.046e-05/1.285, allocations: 16.75 kB / 1.128 GB, free: 7.766 MB / 0.7794 GB Notification: Performance of postOpt tearingSystem (initialization): time 2.241e-05/1.285, allocations: 20 kB / 1.128 GB, free: 7.746 MB / 0.7794 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002387/1.288, allocations: 0.508 MB / 1.129 GB, free: 7.262 MB / 0.7794 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 3.844e-05/1.288, allocations: 34.72 kB / 1.129 GB, free: 7.234 MB / 0.7794 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003464/1.291, allocations: 328.2 kB / 1.129 GB, free: 6.914 MB / 0.7794 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0002427/1.291, allocations: 87.95 kB / 1.129 GB, free: 6.828 MB / 0.7794 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 59 * 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 (208): * Single equations (assignments): 202 * 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 0.0005412/1.292, allocations: 291.7 kB / 1.129 GB, free: 6.559 MB / 0.7794 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006621/1.293, allocations: 267.5 kB / 1.13 GB, free: 6.297 MB / 0.7794 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004377/1.297, allocations: 1.847 MB / 1.132 GB, free: 4.43 MB / 0.7794 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 9.598e-06/1.297, allocations: 12 kB / 1.132 GB, free: 4.418 MB / 0.7794 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.843e-06/1.297, allocations: 0 / 1.132 GB, free: 4.418 MB / 0.7794 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.075e-05/1.297, allocations: 3.984 kB / 1.132 GB, free: 4.414 MB / 0.7794 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.008661/1.306, allocations: 4.503 MB / 1.136 GB, free: 15.84 MB / 0.795 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.118e-05/1.306, allocations: 8.75 kB / 1.136 GB, free: 15.84 MB / 0.795 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001633/1.307, allocations: 303.9 kB / 1.136 GB, free: 15.55 MB / 0.795 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.636e-05/1.307, allocations: 12 kB / 1.136 GB, free: 15.54 MB / 0.795 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 9.062e-05/1.308, allocations: 27.98 kB / 1.136 GB, free: 15.51 MB / 0.795 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001116/1.309, allocations: 2.371 MB / 1.139 GB, free: 13.06 MB / 0.795 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.752e-06/1.309, allocations: 12.09 kB / 1.139 GB, free: 13.05 MB / 0.795 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004149/1.313, allocations: 1.973 MB / 1.141 GB, free: 10.98 MB / 0.795 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001223/1.314, allocations: 0.5252 MB / 1.141 GB, free: 10.44 MB / 0.795 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0005943/1.315, allocations: 28 kB / 1.141 GB, free: 10.41 MB / 0.795 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002426/1.317, allocations: 193.4 kB / 1.141 GB, free: 10.22 MB / 0.795 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001473/1.317, allocations: 83.58 kB / 1.141 GB, free: 10.15 MB / 0.795 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001608/1.317, allocations: 63.95 kB / 1.141 GB, free: 10.09 MB / 0.795 GB Notification: Performance of sorting global known variables: time 0.003257/1.321, allocations: 1.755 MB / 1.143 GB, free: 8.328 MB / 0.795 GB Notification: Performance of sort global known variables: time 2.71e-07/1.321, allocations: 0 / 1.143 GB, free: 8.328 MB / 0.795 GB Notification: Performance of remove unused functions: time 0.003519/1.324, allocations: 1.287 MB / 1.144 GB, free: 7.039 MB / 0.795 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 0.000814/1.325, allocations: 390 kB / 1.145 GB, free: 6.703 MB / 0.795 GB Notification: Performance of simCode: created initialization part: time 0.009248/1.334, allocations: 3.755 MB / 1.148 GB, free: 3.02 MB / 0.795 GB Notification: Performance of simCode: created event and clocks part: time 9.257e-06/1.334, allocations: 4 kB / 1.148 GB, free: 3.016 MB / 0.795 GB Notification: Performance of simCode: created simulation system equations: time 0.001942/1.336, allocations: 0.8031 MB / 1.149 GB, free: 2.242 MB / 0.795 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.005988/1.342, allocations: 1.215 MB / 1.15 GB, free: 1.055 MB / 0.795 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.007736/1.35, allocations: 4.401 MB / 1.155 GB, free: 12.56 MB / 0.8106 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001385/1.351, allocations: 1.683 MB / 1.156 GB, free: 10.85 MB / 0.8106 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009309/1.352, allocations: 223.3 kB / 1.157 GB, free: 10.63 MB / 0.8106 GB Notification: Performance of SimCode: time 9.12e-07/1.352, allocations: 0 / 1.157 GB, free: 10.63 MB / 0.8106 GB Notification: Performance of Templates: time 0.08884/1.441, allocations: 85.88 MB / 1.24 GB, free: 5.043 MB / 0.8887 GB make -j1 -f BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.makefile (rm -f BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe ; mkfifo BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe ; head -c 1048576 < BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe >> ../files/BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.sim & ./BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildingSystems_BuildingSystems.Fluid.Interfaces.Examples.ReverseFlowMassExchanger.pipe 2>&1)