Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.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/IBPSA 4.0.0-master/package.mo", uses=false) Using package IBPSA with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-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: translateModel(IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume") translateModel(IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001213/0.001213, allocations: 118.4 kB / 17.09 MB, free: 6.012 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001223/0.001223, allocations: 192.7 kB / 18.02 MB, free: 5.094 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.43/1.43, allocations: 222.9 MB / 241.7 MB, free: 15.17 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 1.007/1.007, allocations: 115.3 MB / 407.2 MB, free: 6.148 MB / 318.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001344/0.001344, allocations: 62.67 kB / 0.5583 GB, free: 32.26 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1868/0.1882, allocations: 76.19 MB / 0.6327 GB, free: 4.414 MB / 478.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume): time 0.6516/0.8398, allocations: 167.5 MB / 0.7963 GB, free: 13.16 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.01587/0.8557, allocations: 8.911 MB / 0.805 GB, free: 12.38 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003074/0.8588, allocations: 42.78 kB / 0.8051 GB, free: 12.36 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.002165/0.861, allocations: 0.6475 MB / 0.8057 GB, free: 12.14 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.005928/0.867, allocations: 1.496 MB / 0.8072 GB, free: 11.62 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.00414/0.8712, allocations: 1.188 MB / 0.8083 GB, free: 11.03 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.00502/0.8762, allocations: 2.704 MB / 0.811 GB, free: 9.605 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001698/0.8779, allocations: 0.96 MB / 0.8119 GB, free: 9.02 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.003136/0.8811, allocations: 1.032 MB / 0.8129 GB, free: 8.602 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.002007/0.8831, allocations: 1 MB / 0.8139 GB, free: 8.098 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 0.0002079/0.8833, allocations: 95.66 kB / 0.814 GB, free: 8.098 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003273/0.8866, allocations: 1.048 MB / 0.815 GB, free: 7.727 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.0003703/0.887, allocations: 281.6 kB / 0.8153 GB, free: 7.516 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.0009098/0.8879, allocations: 0.6013 MB / 0.8159 GB, free: 7.117 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.003596/0.8915, allocations: 1.744 MB / 0.8176 GB, free: 6.059 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 6.682e-06/0.8916, allocations: 0 / 0.8176 GB, free: 6.059 MB / 0.5919 GB Notification: Performance of FrontEnd: time 2.224e-06/0.8916, allocations: 0 / 0.8176 GB, free: 6.059 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 1.604e-05/0.8916, allocations: 0 / 0.8176 GB, free: 6.059 MB / 0.5919 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 195 * Number of variables: 195 Notification: Performance of Generate backend data structure: time 0.002891/0.8945, allocations: 1.563 MB / 0.8191 GB, free: 4.867 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 4.485e-05/0.8945, allocations: 9.688 kB / 0.8191 GB, free: 4.867 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000358/0.8949, allocations: 137.9 kB / 0.8192 GB, free: 4.801 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001521/0.8964, allocations: 0.8842 MB / 0.8201 GB, free: 4.125 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.273e-05/0.8965, allocations: 66.47 kB / 0.8202 GB, free: 4.09 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001238/0.8966, allocations: 78.61 kB / 0.8202 GB, free: 4.062 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001481/0.8981, allocations: 0.8653 MB / 0.8211 GB, free: 3.496 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.544e-05/0.8982, allocations: 2.469 kB / 0.8211 GB, free: 3.496 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.782e-05/0.8983, allocations: 35.75 kB / 0.8211 GB, free: 3.469 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.882e-05/0.8983, allocations: 20.16 kB / 0.8211 GB, free: 3.469 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001138/0.8994, allocations: 0.638 MB / 0.8218 GB, free: 3.156 MB / 0.5919 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 0.004586/0.904, allocations: 3.957 MB / 0.8256 GB, free: 15.74 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001139/0.9052, allocations: 0.5721 MB / 0.8262 GB, free: 15.45 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004704/0.9057, allocations: 299 kB / 0.8265 GB, free: 15.3 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 0.000981/0.9066, allocations: 1.24 MB / 0.8277 GB, free: 13.86 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0006203/0.9073, allocations: 329.5 kB / 0.828 GB, free: 13.65 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=63): time 4.048e-06/0.9073, allocations: 0 / 0.828 GB, free: 13.65 MB / 0.6075 GB Notification: Performance of matching and sorting (n=63): time 0.002462/0.9098, allocations: 1.137 MB / 0.8291 GB, free: 12.97 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.129e-05/0.9098, allocations: 85.02 kB / 0.8292 GB, free: 12.88 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001098/0.9109, allocations: 0.8665 MB / 0.83 GB, free: 12.39 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 5.754e-05/0.911, allocations: 42.05 kB / 0.8301 GB, free: 12.35 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003693/0.9114, allocations: 468 kB / 0.8305 GB, free: 11.94 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001895/0.9116, allocations: 221.5 kB / 0.8307 GB, free: 11.75 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001698/0.9118, allocations: 116.9 kB / 0.8308 GB, free: 11.68 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001357/0.9119, allocations: 330.9 kB / 0.8312 GB, free: 11.36 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000391/0.9123, allocations: 208.8 kB / 0.8314 GB, free: 11.25 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0004983/0.9128, allocations: 316.7 kB / 0.8317 GB, free: 11.04 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0009058/0.9137, allocations: 0.5268 MB / 0.8322 GB, free: 10.71 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.322e-06/0.9137, allocations: 2.25 kB / 0.8322 GB, free: 10.71 MB / 0.6075 GB Notification: Performance of matching and sorting (n=75) (initialization): time 0.001346/0.9151, allocations: 0.7103 MB / 0.8329 GB, free: 10.35 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 2.095e-05/0.9151, allocations: 4.969 kB / 0.8329 GB, free: 10.35 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.558e-06/0.9151, allocations: 2.812 kB / 0.8329 GB, free: 10.35 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0006038/0.9158, allocations: 116.9 kB / 0.833 GB, free: 10.3 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004453/0.9162, allocations: 115.5 kB / 0.8331 GB, free: 10.27 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006046/0.9168, allocations: 0.6657 MB / 0.8337 GB, free: 9.664 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006456/0.9175, allocations: 65.55 kB / 0.8338 GB, free: 9.617 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.207e-05/0.9176, allocations: 23.59 kB / 0.8338 GB, free: 9.613 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0006789/0.9182, allocations: 400.6 kB / 0.8342 GB, free: 9.367 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0004551/0.9187, allocations: 295.3 kB / 0.8345 GB, free: 9.164 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0008377/0.9196, allocations: 0.509 MB / 0.835 GB, free: 8.844 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 6.913e-06/0.9196, allocations: 5.969 kB / 0.835 GB, free: 8.84 MB / 0.6075 GB Notification: Performance of matching and sorting (n=75) (initialization_lambda0): time 0.001274/0.9209, allocations: 0.6862 MB / 0.8357 GB, free: 8.488 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 1.361e-05/0.9209, allocations: 7.125 kB / 0.8357 GB, free: 8.488 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.031e-06/0.9209, allocations: 2.75 kB / 0.8357 GB, free: 8.488 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.000498/0.9214, allocations: 109.5 kB / 0.8358 GB, free: 8.438 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004085/0.9218, allocations: 119 kB / 0.8359 GB, free: 8.41 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005574/0.9224, allocations: 0.6636 MB / 0.8365 GB, free: 7.805 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0005737/0.923, allocations: 44.17 kB / 0.8366 GB, free: 7.773 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 6.402e-05/0.923, allocations: 26.31 kB / 0.8366 GB, free: 7.77 MB / 0.6075 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 10 * Number of states: 0 () * Number of discrete variables: 5 ($PRE.mRoo_flow.nextTimeEvent,$whenCondition1,mRoo_flow.nextTimeEventScaled,$PRE.mRoo_flow.nextTimeEventScaled,mRoo_flow.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (67): * Single equations (assignments): 66 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(2,7)} Notification: Performance of prepare postOptimizeDAE: time 0.0002673/0.9233, allocations: 223.8 kB / 0.8368 GB, free: 7.551 MB / 0.6075 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000208/0.9235, allocations: 98.09 kB / 0.8369 GB, free: 7.5 MB / 0.6075 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001906/0.9254, allocations: 0.9422 MB / 0.8378 GB, free: 6.973 MB / 0.6075 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.918e-05/0.9255, allocations: 10.83 kB / 0.8378 GB, free: 6.969 MB / 0.6075 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.059e-05/0.9255, allocations: 0 / 0.8378 GB, free: 6.969 MB / 0.6075 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001296/0.9268, allocations: 0.85 MB / 0.8387 GB, free: 6.402 MB / 0.6075 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003098/0.9299, allocations: 1.852 MB / 0.8405 GB, free: 5.047 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.703e-06/0.9299, allocations: 3.938 kB / 0.8405 GB, free: 5.043 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000427/0.9304, allocations: 103.9 kB / 0.8406 GB, free: 4.941 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0005477/0.9309, allocations: 145.7 kB / 0.8407 GB, free: 4.793 MB / 0.6075 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.907e-05/0.931, allocations: 19.98 kB / 0.8407 GB, free: 4.773 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0009338/0.9319, allocations: 1.249 MB / 0.842 GB, free: 3.473 MB / 0.6075 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.334e-06/0.9319, allocations: 0 / 0.842 GB, free: 3.473 MB / 0.6075 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002168/0.9341, allocations: 1.283 MB / 0.8432 GB, free: 2.164 MB / 0.6075 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000408/0.9345, allocations: 255.6 kB / 0.8435 GB, free: 1.895 MB / 0.6075 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001775/0.9347, allocations: 16 kB / 0.8435 GB, free: 1.879 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000536/0.9353, allocations: 27.92 kB / 0.8435 GB, free: 1.852 MB / 0.6075 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001176/0.9354, allocations: 44.59 kB / 0.8435 GB, free: 1.809 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.736e-05/0.9355, allocations: 27.98 kB / 0.8436 GB, free: 1.781 MB / 0.6075 GB Notification: Performance of sorting global known variables: time 0.0008605/0.9363, allocations: 0.6052 MB / 0.8442 GB, free: 1.164 MB / 0.6075 GB Notification: Performance of sort global known variables: time 2.6e-07/0.9363, allocations: 7.938 kB / 0.8442 GB, free: 1.156 MB / 0.6075 GB Notification: Performance of remove unused functions: time 0.002078/0.9384, allocations: 0.5623 MB / 0.8447 GB, free: 0.5938 MB / 0.6075 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 5 (roo.dynBal.U,roo.dynBal.m,oriChiTop.mExc,oriBot.mExc,oriChiBot.mExc) * Number of discrete variables: 3 ($whenCondition1,mRoo_flow.nextTimeEvent,mRoo_flow.nextTimeEventScaled) * Number of discrete states: 2 (mRoo_flow.nextTimeEvent,mRoo_flow.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (62): * Single equations (assignments): 54 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(2,9), (1,2)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002153/0.9406, allocations: 0.713 MB / 0.8454 GB, free: 68 kB / 0.6075 GB Notification: Performance of simCode: created initialization part: time 0.002083/0.9427, allocations: 0.9227 MB / 0.8463 GB, free: 15.14 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 5.36e-06/0.9427, allocations: 8.062 kB / 0.8463 GB, free: 15.14 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.0007895/0.9435, allocations: 383.6 kB / 0.8467 GB, free: 14.76 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002155/0.9457, allocations: 456 kB / 0.8471 GB, free: 14.33 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004014/0.9497, allocations: 2.092 MB / 0.8492 GB, free: 12.21 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0007494/0.9505, allocations: 1.065 MB / 0.8502 GB, free: 11.11 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002774/0.9507, allocations: 91.41 kB / 0.8503 GB, free: 11.03 MB / 0.6231 GB Notification: Performance of SimCode: time 5.91e-07/0.9508, allocations: 3.938 kB / 0.8503 GB, free: 11.02 MB / 0.6231 GB Notification: Performance of Templates: time 0.03148/0.9822, allocations: 23.42 MB / 0.8732 GB, free: 3.703 MB / 0.6387 GB make -j1 -f IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.makefile (rm -f IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.pipe ; mkfifo IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.pipe >> ../files/IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.sim & ./IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Airflow.Multizone.Examples.ChimneyShaftNoVolume.pipe 2>&1)