Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_9_Buildings.Fluid.Examples.FlowSystem.Basic.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.1-maint.9.1.x/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/ModelicaServices 4.0.0+maint.om/package.mo", uses=false) Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/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 Buildings with version 9.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.1-maint.9.1.x/package.mo) Running command: "" <> buildModelFMU(Buildings.Fluid.Examples.FlowSystem.Basic,fileNamePrefix="Buildings_9_Buildings_Fluid_Examples_FlowSystem_Basic",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.Examples.FlowSystem.Basic,fileNamePrefix="Buildings_9_Buildings_Fluid_Examples_FlowSystem_Basic",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.1-maint.9.1.x/package.mo): time 2.427/2.427, allocations: 387.4 MB / 394.9 MB, free: 13.36 MB / 314.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001329/0.001329, allocations: 180.6 kB / 487.4 MB, free: 5.027 MB / 394.7 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.594/1.594, allocations: 221.5 MB / 0.7824 GB, free: 0.9805 MB / 0.5417 GB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00105/0.00105, allocations: 103.8 kB / 0.9219 GB, free: 2.215 MB / 0.6823 GB Notification: Performance of FrontEnd - loaded program: time 2.284e-05/2.277e-05, allocations: 4 kB / 1.067 GB, free: 185.6 MB / 0.7605 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2863/0.2863, allocations: 142.4 MB / 1.206 GB, free: 43.86 MB / 0.7605 GB Notification: Performance of FrontEnd - scodeFlatten: time 1.271/1.557, allocations: 461.4 MB / 1.657 GB, free: 9.152 MB / 1.073 GB Notification: Performance of FrontEnd - mkProgramGraph: time 0.0002345/1.558, allocations: 87.64 kB / 1.657 GB, free: 9.109 MB / 1.073 GB Notification: Performance of FrontEnd - DAE generated: time 27.93/29.48, allocations: 6.453 GB / 8.109 GB, free: 113.1 MB / 1.401 GB Notification: Performance of FrontEnd: time 2.344e-06/29.48, allocations: 0 / 8.109 GB, free: 113.1 MB / 1.401 GB Notification: Performance of Transformations before backend: time 0.005101/29.49, allocations: 444.9 kB / 8.11 GB, free: 113 MB / 1.401 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2029 * Number of variables: 2029 Notification: Performance of Generate backend data structure: time 0.0618/29.55, allocations: 13.51 MB / 8.123 GB, free: 107.3 MB / 1.401 GB Notification: Performance of prepare preOptimizeDAE: time 5.307e-05/29.55, allocations: 8.281 kB / 8.123 GB, free: 107.3 MB / 1.401 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.02019/29.57, allocations: 2.55 MB / 8.125 GB, free: 106.3 MB / 1.401 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.07816/29.65, allocations: 21.76 MB / 8.147 GB, free: 103.7 MB / 1.401 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0007095/29.65, allocations: 253.1 kB / 8.147 GB, free: 103.7 MB / 1.401 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00591/29.66, allocations: 0.5919 MB / 8.147 GB, free: 103.7 MB / 1.401 GB Notification: Performance of preOpt removeEqualFunctionCalls (simulation): time 0.04352/29.7, allocations: 19.89 MB / 8.167 GB, free: 103.7 MB / 1.401 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.04085/29.74, allocations: 14.61 MB / 8.181 GB, free: 102.9 MB / 1.401 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0005758/29.74, allocations: 14.22 kB / 8.181 GB, free: 102.9 MB / 1.401 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.004115/29.74, allocations: 11.12 kB / 8.181 GB, free: 102.9 MB / 1.401 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0003986/29.75, allocations: 363.5 kB / 8.181 GB, free: 102.9 MB / 1.401 GB Warning: The model contains alias variables with conflicting start and/or 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 0.1638/29.91, allocations: 77.63 MB / 8.257 GB, free: 70.66 MB / 1.401 GB Notification: Performance of preOpt comSubExp (simulation): time 0.02311/29.93, allocations: 13.47 MB / 8.27 GB, free: 70.19 MB / 1.401 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.01466/29.95, allocations: 10 MB / 8.28 GB, free: 70.05 MB / 1.401 GB Warning: The model contains alias variables with conflicting start and/or 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 evalFunc (simulation): time 0.0833/30.03, allocations: 34.35 MB / 8.314 GB, free: 58.23 MB / 1.401 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.01715/30.05, allocations: 9.354 MB / 8.323 GB, free: 54.89 MB / 1.401 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.04534/30.09, allocations: 14.92 MB / 8.337 GB, free: 53.5 MB / 1.401 GB Notification: Performance of pre-optimization done (n=638): time 8.569e-05/30.09, allocations: 0 / 8.337 GB, free: 53.5 MB / 1.401 GB Notification: Performance of matching and sorting (n=640): time 1.908/32, allocations: 140.9 MB / 8.475 GB, free: 127.1 MB / 1.417 GB Notification: Performance of inlineWhenForInitialization (initialization): time 9.942e-05/32, allocations: 119.3 kB / 8.475 GB, free: 127.1 MB / 1.417 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.05018/32.05, allocations: 13.35 MB / 8.488 GB, free: 126.4 MB / 1.417 GB Notification: Performance of collectPreVariables (initialization): time 0.005271/32.06, allocations: 42.61 kB / 8.488 GB, free: 126.4 MB / 1.417 GB Notification: Performance of collectInitialEqns (initialization): time 0.0124/32.07, allocations: 7.186 MB / 8.495 GB, free: 126.1 MB / 1.417 GB Notification: Performance of collectInitialBindings (initialization): time 0.005916/32.07, allocations: 2.178 MB / 8.497 GB, free: 125.9 MB / 1.417 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.003732/32.08, allocations: 0 / 8.497 GB, free: 125.9 MB / 1.417 GB Notification: Performance of setup shared object (initialization): time 0.0009902/32.08, allocations: 0.6472 MB / 8.498 GB, free: 125.6 MB / 1.417 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.01504/32.09, allocations: 8.184 MB / 8.506 GB, free: 125.6 MB / 1.417 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.01828/32.11, allocations: 10.97 MB / 8.517 GB, free: 122.5 MB / 1.417 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.01945/32.13, allocations: 9.521 MB / 8.526 GB, free: 122.4 MB / 1.417 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001493/32.13, allocations: 12.38 kB / 8.526 GB, free: 122.4 MB / 1.417 GB Notification: Performance of matching and sorting (n=1100) (initialization): time 0.6535/32.79, allocations: 124.3 MB / 8.647 GB, free: 120.6 MB / 1.417 GB Notification: Performance of prepare postOptimizeDAE: time 0.007542/32.79, allocations: 31.9 MB / 8.679 GB, free: 87.03 MB / 1.417 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0002399/32.79, allocations: 46.28 kB / 8.679 GB, free: 87.03 MB / 1.417 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.6504/33.44, allocations: 144.6 MB / 8.82 GB, free: 84.57 MB / 1.417 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01401/33.46, allocations: 2.606 MB / 8.822 GB, free: 84.55 MB / 1.417 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.1429/33.6, allocations: 68.77 MB / 8.89 GB, free: 40.79 MB / 1.417 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.02184/33.62, allocations: 1.058 MB / 8.891 GB, free: 39.77 MB / 1.417 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.004788/33.63, allocations: 0.7879 MB / 8.891 GB, free: 39.05 MB / 1.417 GB Notification: Performance of prepare postOptimizeDAE: time 1.521e-05/33.63, allocations: 4.781 kB / 8.891 GB, free: 39.04 MB / 1.417 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 1.894/35.52, allocations: 121.3 MB / 9.01 GB, free: 152.7 MB / 1.464 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0004575/35.52, allocations: 44.09 kB / 9.01 GB, free: 152.7 MB / 1.464 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.6801/36.2, allocations: 144.5 MB / 9.151 GB, free: 152.6 MB / 1.464 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.01486/36.22, allocations: 2.564 MB / 9.153 GB, free: 152.6 MB / 1.464 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.1775/36.4, allocations: 73.28 MB / 9.225 GB, free: 149.8 MB / 1.464 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.02216/36.42, allocations: 1.039 MB / 9.226 GB, free: 149.7 MB / 1.464 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.004873/36.42, allocations: 0.7452 MB / 9.227 GB, free: 149.7 MB / 1.464 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 207 * Number of states: 0 () * Number of discrete variables: 10 ($whenCondition1,$whenCondition2,booleanToInteger.u,booleanToInteger.y,$PRE.stepPump.pulseStart,stepPump.pulseStart,$PRE.stepValve.T_start,stepValve.T_start,$PRE.stepValve.count,stepValve.count) * Number of discrete states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (857): * Single equations (assignments): 843 * Array equations: 4 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 7 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 7 {1,1,1,1,1,1,1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(28,89.3%) 28} * Non-linear torn systems: 1 {33 119} Notification: Performance of prepare postOptimizeDAE: time 0.009063/36.43, allocations: 313 kB / 9.227 GB, free: 149.6 MB / 1.464 GB Notification: Performance of postOpt createAliasVarsForOutputStates (simulation): time 0.6068/37.04, allocations: 119.6 MB / 9.344 GB, free: 142.7 MB / 1.464 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.009081/37.05, allocations: 1.402 MB / 9.345 GB, free: 142.4 MB / 1.464 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.2035/37.25, allocations: 44.8 MB / 9.389 GB, free: 112.7 MB / 1.464 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 0.0001819/37.25, allocations: 73.09 kB / 9.389 GB, free: 112.6 MB / 1.464 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 0.000139/37.25, allocations: 28 kB / 9.389 GB, free: 112.6 MB / 1.464 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.1756/37.43, allocations: 39.54 MB / 9.428 GB, free: 79.42 MB / 1.464 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.228/37.66, allocations: 60.15 MB / 9.486 GB, free: 32.09 MB / 1.464 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 0.0001154/37.66, allocations: 128 / 9.486 GB, free: 32.09 MB / 1.464 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.007601/37.66, allocations: 1.17 MB / 9.487 GB, free: 31.01 MB / 1.464 GB Notification: Performance of postOpt tearingSystem (simulation): time 1.499/39.16, allocations: 41.81 MB / 9.528 GB, free: 163.5 MB / 1.479 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.00288/39.17, allocations: 160.9 kB / 9.528 GB, free: 163.5 MB / 1.479 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.06728/39.23, allocations: 28.71 MB / 9.556 GB, free: 157.7 MB / 1.479 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 8.005e-06/39.23, allocations: 3.062 kB / 9.556 GB, free: 157.7 MB / 1.479 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.2058/39.44, allocations: 50.35 MB / 9.606 GB, free: 156.6 MB / 1.479 GB Notification: Performance of postOpt removeConstants (simulation): time 0.01464/39.45, allocations: 3.336 MB / 9.609 GB, free: 156.4 MB / 1.479 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.01022/39.46, allocations: 72.09 kB / 9.609 GB, free: 156.4 MB / 1.479 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.02124/39.48, allocations: 0.9005 MB / 9.61 GB, free: 156.3 MB / 1.479 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.004003/39.49, allocations: 459.4 kB / 9.61 GB, free: 156.3 MB / 1.479 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.002742/39.49, allocations: 272.4 kB / 9.611 GB, free: 156.3 MB / 1.479 GB Notification: Performance of sorting global known variables: time 0.02782/39.52, allocations: 10.06 MB / 9.62 GB, free: 155.9 MB / 1.479 GB Notification: Performance of sort global known variables: time 4.11e-07/39.52, allocations: 0 / 9.62 GB, free: 155.9 MB / 1.479 GB Notification: Performance of remove unused functions: time 0.06013/39.58, allocations: 7.872 MB / 9.628 GB, free: 155.9 MB / 1.479 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 74 (pmpSouth.vol.dynBal.U,pmpSouth.filter.s[1],pmpSouth.filter.s[2],pmpNorth.vol.dynBal.U,pmpNorth.filter.s[1],pmpNorth.filter.s[2],valSouth1[1].filter.s[1],valSouth1[1].filter.s[2],valSouth1[2].filter.s[1],valSouth1[2].filter.s[2],valSouth1[3].filter.s[1],valSouth1[3].filter.s[2],valSouth1[4].filter.s[1],valSouth1[4].filter.s[2],valSouth2[1].filter.s[1],valSouth2[1].filter.s[2],valSouth2[2].filter.s[1],valSouth2[2].filter.s[2],valSouth2[3].filter.s[1],valSouth2[3].filter.s[2],valSouth2[4].filter.s[1],valSouth2[4].filter.s[2],valSouth2[5].filter.s[1],valSouth2[5].filter.s[2],valSouth2[6].filter.s[1],valSouth2[6].filter.s[2],valSouth2[7].filter.s[1],valSouth2[7].filter.s[2],valSouth2[8].filter.s[1],valSouth2[8].filter.s[2],valNorth1[1].filter.s[1],valNorth1[1].filter.s[2],valNorth1[2].filter.s[1],valNorth1[2].filter.s[2],valNorth1[3].filter.s[1],valNorth1[3].filter.s[2],valNorth1[4].filter.s[1],valNorth1[4].filter.s[2],valNorth2[1].filter.s[1],valNorth2[1].filter.s[2],valNorth2[2].filter.s[1],valNorth2[2].filter.s[2],valNorth2[3].filter.s[1],valNorth2[3].filter.s[2],valNorth2[4].filter.s[1],valNorth2[4].filter.s[2],valNorth2[5].filter.s[1],valNorth2[5].filter.s[2],valNorth2[6].filter.s[1],valNorth2[6].filter.s[2],valNorth2[7].filter.s[1],valNorth2[7].filter.s[2],valNorth2[8].filter.s[1],valNorth2[8].filter.s[2],valSouth.vol.dynBal.U,valSouth.filter.s[1],valSouth.filter.s[2],valNorth.vol.dynBal.U,valNorth.filter.s[1],valNorth.filter.s[2],spl.vol.dynBal.U,spl1.vol.dynBal.U,pumpHea.vol.dynBal.U,pumpHea.filter.s[1],pumpHea.filter.s[2],valHea.filter.s[1],valHea.filter.s[2],valCoo.filter.s[1],valCoo.filter.s[2],spl2.vol.dynBal.U,spl3.vol.dynBal.U,pumpCoo.vol.dynBal.U,pumpCoo.filter.s[1],pumpCoo.filter.s[2]) * Number of discrete variables: 7 ($whenCondition2,$whenCondition1,booleanToInteger.u,booleanToInteger.y,stepPump.pulseStart,stepValve.T_start,stepValve.count) * Number of discrete states: 1 (stepValve.count) * Top-level inputs: 0 Notification: Strong component statistics for simulation (535): * Single equations (assignments): 513 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 10 * When equations: 3 * If-equations: 0 * Equation systems (linear and non-linear blocks): 7 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 7 {1,1,1,1,1,1,1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(28,89.3%) 28} * Non-linear torn systems: 1 {33 119} Notification: Performance of Backend phase and start with SimCode phase: time 0.2082/39.79, allocations: 55.1 MB / 9.682 GB, free: 151.7 MB / 1.479 GB Notification: Performance of simCode: created initialization part: time 0.08365/39.87, allocations: 33.98 MB / 9.715 GB, free: 150.4 MB / 1.479 GB Notification: Performance of simCode: created event and clocks part: time 1.997e-05/39.87, allocations: 6.812 kB / 9.715 GB, free: 150.4 MB / 1.479 GB Notification: Performance of simCode: created simulation system equations: time 0.02263/39.89, allocations: 8.941 MB / 9.724 GB, free: 150.1 MB / 1.479 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.04737/39.94, allocations: 7.139 MB / 9.731 GB, free: 150 MB / 1.479 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1125/40.05, allocations: 30.45 MB / 9.761 GB, free: 144.5 MB / 1.479 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.01928/40.07, allocations: 8.573 MB / 9.769 GB, free: 143.4 MB / 1.479 GB Notification: Performance of simCode: alias equations: time 0.04297/40.12, allocations: 7.903 MB / 9.777 GB, free: 143.3 MB / 1.479 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.01614/40.13, allocations: 6.913 MB / 9.783 GB, free: 143.3 MB / 1.479 GB Notification: Performance of SimCode: time 9.82e-07/40.13, allocations: 0 / 9.783 GB, free: 143.3 MB / 1.479 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 3.229/43.36, allocations: 0.5428 GB / 10.33 GB, free: 171.5 MB / 1.479 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001499/43.36, allocations: 163.3 kB / 10.33 GB, free: 171.3 MB / 1.479 GB Notification: Performance of buildModelFMU: Generate platform static: time 32.65/76.01, allocations: 0 / 10.33 GB, free: 171.3 MB / 1.479 GB (rm -f Buildings_9_Buildings.Fluid.Examples.FlowSystem.Basic.pipe ; mkfifo Buildings_9_Buildings.Fluid.Examples.FlowSystem.Basic.pipe ; head -c 1048576 < Buildings_9_Buildings.Fluid.Examples.FlowSystem.Basic.pipe >> ../files/Buildings_9_Buildings.Fluid.Examples.FlowSystem.Basic.sim & /home/hudson/saved_omc/OMSimulator/install/linux/bin/OMSimulator -r=Buildings_9_Buildings.Fluid.Examples.FlowSystem.Basic_res.mat --tempDir=temp_Buildings_9_Buildings_Fluid_Examples_FlowSystem_Basic_fmu --startTime=0 --stopTime=1000 --timeout=50 --tolerance=1e-06 Buildings_9_Buildings_Fluid_Examples_FlowSystem_Basic.fmu > Buildings_9_Buildings.Fluid.Examples.FlowSystem.Basic.pipe 2>&1)