Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir.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.Fluid.MixingVolumes.Validation.MSLCombustionAir,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir") translateModel(IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001675/0.001675, allocations: 107.1 kB / 16.4 MB, free: 6.504 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001723/0.001724, allocations: 193.2 kB / 17.34 MB, free: 5.742 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.475/1.475, allocations: 222.9 MB / 241 MB, free: 15.14 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7557/0.7557, allocations: 115.3 MB / 406.5 MB, free: 6.148 MB / 318.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001325/0.001325, allocations: 63.8 kB / 0.5577 GB, free: 32.35 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1377/0.139, allocations: 76.18 MB / 0.6321 GB, free: 4.418 MB / 478.1 MB Notification: Performance of NFInst.instantiate(IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir): time 0.588/0.727, allocations: 184.9 MB / 0.8126 GB, free: 12.25 MB / 0.5919 GB Notification: Performance of NFInst.instExpressions: time 0.009074/0.7361, allocations: 6.763 MB / 0.8192 GB, free: 10.35 MB / 0.5919 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001526/0.7377, allocations: 27.31 kB / 0.8193 GB, free: 10.34 MB / 0.5919 GB Notification: Performance of NFTyping.typeComponents: time 0.001298/0.739, allocations: 355.3 kB / 0.8196 GB, free: 10.07 MB / 0.5919 GB Notification: Performance of NFTyping.typeBindings: time 0.005801/0.7449, allocations: 2.076 MB / 0.8216 GB, free: 8.832 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.002045/0.747, allocations: 0.6855 MB / 0.8223 GB, free: 8.391 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.002195/0.7492, allocations: 1.681 MB / 0.8239 GB, free: 7.48 MB / 0.5919 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0007371/0.7499, allocations: 0.562 MB / 0.8245 GB, free: 7.16 MB / 0.5919 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001705/0.7516, allocations: 0.9074 MB / 0.8254 GB, free: 6.68 MB / 0.5919 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0005359/0.7522, allocations: 480.3 kB / 0.8258 GB, free: 6.441 MB / 0.5919 GB Notification: Performance of NFPackage.collectConstants: time 7.374e-05/0.7523, allocations: 55.97 kB / 0.8259 GB, free: 6.441 MB / 0.5919 GB Notification: Performance of NFFlatten.collectFunctions: time 0.004142/0.7564, allocations: 2.319 MB / 0.8281 GB, free: 5.383 MB / 0.5919 GB Notification: Performance of NFScalarize.scalarize: time 0.0008101/0.7572, allocations: 312.8 kB / 0.8284 GB, free: 5.195 MB / 0.5919 GB Notification: Performance of NFVerifyModel.verify: time 0.0003997/0.7577, allocations: 377.1 kB / 0.8288 GB, free: 4.965 MB / 0.5919 GB Notification: Performance of NFConvertDAE.convert: time 0.003067/0.7607, allocations: 1.993 MB / 0.8307 GB, free: 3.879 MB / 0.5919 GB Notification: Performance of FrontEnd - DAE generated: time 4.739e-06/0.7608, allocations: 0 / 0.8307 GB, free: 3.879 MB / 0.5919 GB Notification: Performance of FrontEnd: time 1.292e-06/0.7608, allocations: 0 / 0.8307 GB, free: 3.879 MB / 0.5919 GB Notification: Performance of Transformations before backend: time 9.408e-06/0.7608, allocations: 0 / 0.8307 GB, free: 3.879 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: 119 * Number of variables: 119 Notification: Performance of Generate backend data structure: time 0.001575/0.7624, allocations: 1.123 MB / 0.8318 GB, free: 2.98 MB / 0.5919 GB Notification: Performance of prepare preOptimizeDAE: time 3.49e-05/0.7624, allocations: 10 kB / 0.8318 GB, free: 2.98 MB / 0.5919 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001316/0.7637, allocations: 246.9 kB / 0.8321 GB, free: 2.863 MB / 0.5919 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009189/0.7646, allocations: 0.6335 MB / 0.8327 GB, free: 2.375 MB / 0.5919 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.68e-05/0.7647, allocations: 36.84 kB / 0.8327 GB, free: 2.359 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 7.733e-05/0.7648, allocations: 51.41 kB / 0.8328 GB, free: 2.344 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0008904/0.7657, allocations: 0.6031 MB / 0.8334 GB, free: 1.984 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.658e-05/0.7657, allocations: 0 / 0.8334 GB, free: 1.984 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.889e-05/0.7657, allocations: 21.34 kB / 0.8334 GB, free: 1.969 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.503e-05/0.7658, allocations: 22.62 kB / 0.8334 GB, free: 1.965 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0006559/0.7664, allocations: 479.2 kB / 0.8339 GB, free: 1.742 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 0.002356/0.7688, allocations: 2.146 MB / 0.836 GB, free: 15.93 MB / 0.6075 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0006093/0.7694, allocations: 389.3 kB / 0.8363 GB, free: 15.73 MB / 0.6075 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002712/0.7697, allocations: 222.1 kB / 0.8366 GB, free: 15.61 MB / 0.6075 GB Notification: Performance of preOpt evalFunc (simulation): time 5.11e-05/0.7698, allocations: 10.89 kB / 0.8366 GB, free: 15.61 MB / 0.6075 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.537e-05/0.7698, allocations: 41.47 kB / 0.8366 GB, free: 15.57 MB / 0.6075 GB Notification: Performance of pre-optimization done (n=34): time 1.593e-06/0.7698, allocations: 0 / 0.8366 GB, free: 15.57 MB / 0.6075 GB Notification: Performance of matching and sorting (n=34): time 0.001378/0.7712, allocations: 0.6898 MB / 0.8373 GB, free: 15.16 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.11e-05/0.7712, allocations: 55.84 kB / 0.8373 GB, free: 15.09 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004916/0.7717, allocations: 498.8 kB / 0.8378 GB, free: 14.8 MB / 0.6075 GB Notification: Performance of collectPreVariables (initialization): time 3.913e-05/0.7718, allocations: 32.58 kB / 0.8378 GB, free: 14.77 MB / 0.6075 GB Notification: Performance of collectInitialEqns (initialization): time 0.00018/0.772, allocations: 288.8 kB / 0.8381 GB, free: 14.51 MB / 0.6075 GB Notification: Performance of collectInitialBindings (initialization): time 9.899e-05/0.7721, allocations: 119.8 kB / 0.8382 GB, free: 14.41 MB / 0.6075 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000109/0.7722, allocations: 74 kB / 0.8383 GB, free: 14.36 MB / 0.6075 GB Notification: Performance of setup shared object (initialization): time 0.0001212/0.7723, allocations: 359.3 kB / 0.8386 GB, free: 14.01 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002289/0.7726, allocations: 170.2 kB / 0.8388 GB, free: 13.92 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002653/0.7728, allocations: 217 kB / 0.839 GB, free: 13.78 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0005081/0.7733, allocations: 377.4 kB / 0.8394 GB, free: 13.57 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.324e-06/0.7734, allocations: 0 / 0.8394 GB, free: 13.57 MB / 0.6075 GB Notification: Performance of matching and sorting (n=42) (initialization): time 0.0006512/0.774, allocations: 470.9 kB / 0.8398 GB, free: 13.33 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 1.908e-05/0.774, allocations: 5.25 kB / 0.8398 GB, free: 13.33 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.252e-06/0.7741, allocations: 6.656 kB / 0.8398 GB, free: 13.33 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.603e-05/0.7741, allocations: 2.156 kB / 0.8398 GB, free: 13.33 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004905/0.7746, allocations: 92.5 kB / 0.8399 GB, free: 13.3 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0003314/0.7749, allocations: 0.5974 MB / 0.8405 GB, free: 12.7 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003643/0.7753, allocations: 40.45 kB / 0.8405 GB, free: 12.67 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.196e-05/0.7753, allocations: 16.66 kB / 0.8406 GB, free: 12.67 MB / 0.6075 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0003989/0.7757, allocations: 335.3 kB / 0.8409 GB, free: 12.46 MB / 0.6075 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0002681/0.776, allocations: 224.6 kB / 0.8411 GB, free: 12.31 MB / 0.6075 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.0004608/0.7765, allocations: 368.6 kB / 0.8414 GB, free: 12.11 MB / 0.6075 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.312e-06/0.7765, allocations: 0 / 0.8414 GB, free: 12.11 MB / 0.6075 GB Notification: Performance of matching and sorting (n=42) (initialization_lambda0): time 0.0006908/0.7772, allocations: 460.9 kB / 0.8419 GB, free: 11.88 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 9.568e-06/0.7772, allocations: 4.906 kB / 0.8419 GB, free: 11.88 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.334e-06/0.7772, allocations: 96 / 0.8419 GB, free: 11.88 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.278e-06/0.7772, allocations: 6.75 kB / 0.8419 GB, free: 11.88 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003107/0.7776, allocations: 80.89 kB / 0.842 GB, free: 11.86 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 4.599e-06/0.7776, allocations: 6.875 kB / 0.842 GB, free: 11.85 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003424/0.7779, allocations: 39.91 kB / 0.842 GB, free: 11.82 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.085e-05/0.778, allocations: 13.97 kB / 0.842 GB, free: 11.82 MB / 0.6075 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 4 * 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 initialization (42): * Single equations (assignments): 41 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * 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): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0001448/0.7781, allocations: 204.1 kB / 0.8422 GB, free: 11.62 MB / 0.6075 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 9.154e-05/0.7782, allocations: 48.5 kB / 0.8423 GB, free: 11.6 MB / 0.6075 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0007744/0.779, allocations: 481.6 kB / 0.8427 GB, free: 11.32 MB / 0.6075 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.171e-06/0.779, allocations: 6.031 kB / 0.8427 GB, free: 11.32 MB / 0.6075 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.43e-06/0.779, allocations: 3.938 kB / 0.8427 GB, free: 11.32 MB / 0.6075 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0006373/0.7797, allocations: 0.695 MB / 0.8434 GB, free: 10.71 MB / 0.6075 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001842/0.7815, allocations: 1.419 MB / 0.8448 GB, free: 9.605 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.308e-06/0.7815, allocations: 2.438 kB / 0.8448 GB, free: 9.605 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000365/0.7819, allocations: 75.73 kB / 0.8449 GB, free: 9.59 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001331/0.782, allocations: 29.91 kB / 0.8449 GB, free: 9.57 MB / 0.6075 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.861e-05/0.7821, allocations: 15.94 kB / 0.8449 GB, free: 9.562 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0005919/0.7827, allocations: 1.151 MB / 0.846 GB, free: 8.406 MB / 0.6075 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.537e-06/0.7827, allocations: 2.438 kB / 0.846 GB, free: 8.406 MB / 0.6075 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.000919/0.7836, allocations: 0.7476 MB / 0.8468 GB, free: 7.824 MB / 0.6075 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000211/0.7838, allocations: 188.4 kB / 0.847 GB, free: 7.621 MB / 0.6075 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.406e-05/0.7839, allocations: 15.98 kB / 0.847 GB, free: 7.605 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003425/0.7843, allocations: 15.98 kB / 0.847 GB, free: 7.59 MB / 0.6075 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.249e-05/0.7843, allocations: 31.84 kB / 0.847 GB, free: 7.559 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 3.521e-05/0.7844, allocations: 19.98 kB / 0.847 GB, free: 7.539 MB / 0.6075 GB Notification: Performance of sorting global known variables: time 0.0003701/0.7848, allocations: 354.8 kB / 0.8474 GB, free: 7.195 MB / 0.6075 GB Notification: Performance of sort global known variables: time 2.3e-07/0.7848, allocations: 0 / 0.8474 GB, free: 7.195 MB / 0.6075 GB Notification: Performance of remove unused functions: time 0.001315/0.7861, allocations: 487.1 kB / 0.8478 GB, free: 6.719 MB / 0.6075 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 7 * Number of states: 4 (vol.dynBal.medium.Xi[1],vol.dynBal.medium.Xi[2],vol.dynBal.U,vol.dynBal.m) * 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 (34): * Single equations (assignments): 32 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 1 * 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): 1 system {1} * Without analytic Jacobian (size): 0 systems 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 {(1,1)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001178/0.7873, allocations: 0.5089 MB / 0.8483 GB, free: 6.234 MB / 0.6075 GB Notification: Performance of simCode: created initialization part: time 0.001219/0.7885, allocations: 0.5934 MB / 0.8489 GB, free: 5.641 MB / 0.6075 GB Notification: Performance of simCode: created event and clocks part: time 4.478e-06/0.7885, allocations: 0 / 0.8489 GB, free: 5.641 MB / 0.6075 GB Notification: Performance of simCode: created simulation system equations: time 0.0003894/0.7889, allocations: 211.7 kB / 0.8491 GB, free: 5.434 MB / 0.6075 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001603/0.7905, allocations: 337 kB / 0.8494 GB, free: 5.113 MB / 0.6075 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.002011/0.7925, allocations: 1.3 MB / 0.8507 GB, free: 3.773 MB / 0.6075 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005165/0.7931, allocations: 0.9216 MB / 0.8516 GB, free: 2.824 MB / 0.6075 GB Notification: Performance of simCode: alias equations: time 0.0005513/0.7936, allocations: 208.6 kB / 0.8518 GB, free: 2.617 MB / 0.6075 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001246/0.7938, allocations: 55.42 kB / 0.8519 GB, free: 2.562 MB / 0.6075 GB Notification: Performance of SimCode: time 1.703e-06/0.7938, allocations: 0 / 0.8519 GB, free: 2.562 MB / 0.6075 GB Notification: Performance of Templates: time 0.0247/0.8185, allocations: 15.59 MB / 0.8671 GB, free: 3.141 MB / 0.6231 GB make -j1 -f IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir.makefile (rm -f IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir.pipe ; mkfifo IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir.pipe >> ../files/IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir.sim & ./IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir -abortSlowSimulation -alarm=480 -lv LOG_STATS > IBPSA_latest_IBPSA.Fluid.MixingVolumes.Validation.MSLCombustionAir.pipe 2>&1)