Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_8_Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.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 3.2.3+maint.om/package.mo", uses=false) loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo", uses=false) Using package Buildings with version 8.1.4 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo) Using package Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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: "" <> buildModelFMU(Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal,fileNamePrefix="Buildings_8_Buildings_Fluid_FixedResistances_Validation_PlugFlowPipes_FlowReversal",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal,fileNamePrefix="Buildings_8_Buildings_Fluid_FixedResistances_Validation_PlugFlowPipes_FlowReversal",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001036/0.001036, allocations: 98.03 kB / 15.36 MB, free: 0.7344 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00713/0.00713, allocations: 168.9 kB / 16.26 MB, free: 6.648 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.591/1.591, allocations: 205.4 MB / 222.5 MB, free: 5.793 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 8.1.4-maint.8.1.x/package.mo): time 1.603/1.603, allocations: 292.7 MB / 0.5502 GB, free: 14.45 MB / 462.1 MB Notification: Modelica requested package Complex of version 3.2.3. Complex 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Modelica requested package ModelicaServices of version 3.2.3. ModelicaServices 4.0.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.0004609/0.0004609, allocations: 19.61 kB / 0.6744 GB, free: 26.1 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1896/0.1901, allocations: 116.3 MB / 0.788 GB, free: 11.5 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal): time 0.03818/0.2283, allocations: 43.51 MB / 0.8305 GB, free: 15.83 MB / 0.6544 GB Notification: Performance of NFInst.instExpressions: time 0.01503/0.2434, allocations: 12.93 MB / 0.8431 GB, free: 2.863 MB / 0.6544 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001222/0.2446, allocations: 35.75 kB / 0.8431 GB, free: 2.828 MB / 0.6544 GB Notification: Performance of NFTyping.typeComponents: time 0.001233/0.2459, allocations: 485.3 kB / 0.8436 GB, free: 2.352 MB / 0.6544 GB Notification: Performance of NFTyping.typeBindings: time 0.003667/0.2496, allocations: 1.812 MB / 0.8454 GB, free: 0.5312 MB / 0.6544 GB Notification: Performance of NFTyping.typeClassSections: time 0.002512/0.2521, allocations: 1.183 MB / 0.8465 GB, free: 15.36 MB / 0.67 GB Notification: Performance of NFFlatten.flatten: time 0.003843/0.2559, allocations: 4.188 MB / 0.8506 GB, free: 11.15 MB / 0.67 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001009/0.257, allocations: 0.8307 MB / 0.8514 GB, free: 10.3 MB / 0.67 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001787/0.2588, allocations: 1.139 MB / 0.8525 GB, free: 9.16 MB / 0.67 GB Notification: Performance of NFSimplifyModel.simplify: time 0.000961/0.2597, allocations: 0.875 MB / 0.8534 GB, free: 8.281 MB / 0.67 GB Notification: Performance of NFPackage.collectConstants: time 0.0001019/0.2598, allocations: 44 kB / 0.8534 GB, free: 8.238 MB / 0.67 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002393/0.2622, allocations: 1.423 MB / 0.8548 GB, free: 6.812 MB / 0.67 GB Notification: Performance of NFScalarize.scalarize: time 0.0002208/0.2625, allocations: 214.9 kB / 0.855 GB, free: 6.602 MB / 0.67 GB Notification: Performance of NFVerifyModel.verify: time 0.0005971/0.2631, allocations: 0.6119 MB / 0.8556 GB, free: 5.98 MB / 0.67 GB Notification: Performance of NFConvertDAE.convert: time 0.002557/0.2656, allocations: 2.321 MB / 0.8579 GB, free: 3.652 MB / 0.67 GB Notification: Performance of FrontEnd - DAE generated: time 3.787e-06/0.2657, allocations: 0 / 0.8579 GB, free: 3.652 MB / 0.67 GB Notification: Performance of FrontEnd: time 1.723e-06/0.2657, allocations: 0 / 0.8579 GB, free: 3.652 MB / 0.67 GB Notification: Performance of Transformations before backend: time 1.281e-05/0.2657, allocations: 0 / 0.8579 GB, free: 3.652 MB / 0.67 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 168 * Number of variables: 168 Notification: Performance of Generate backend data structure: time 0.002597/0.2683, allocations: 1.429 MB / 0.8593 GB, free: 2.172 MB / 0.67 GB Notification: Performance of prepare preOptimizeDAE: time 3.773e-05/0.2683, allocations: 11.97 kB / 0.8593 GB, free: 2.16 MB / 0.67 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001303/0.2685, allocations: 110.7 kB / 0.8594 GB, free: 2.043 MB / 0.67 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0002527/0.2687, allocations: 135.1 kB / 0.8595 GB, free: 1.91 MB / 0.67 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002188/0.2709, allocations: 1.193 MB / 0.8607 GB, free: 0.668 MB / 0.67 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.337e-05/0.271, allocations: 53.31 kB / 0.8608 GB, free: 0.6172 MB / 0.67 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001045/0.2711, allocations: 64 kB / 0.8608 GB, free: 0.5547 MB / 0.67 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001225/0.2723, allocations: 0.7592 MB / 0.8616 GB, free: 15.76 MB / 0.6856 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.423e-05/0.2724, allocations: 4 kB / 0.8616 GB, free: 15.75 MB / 0.6856 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.497e-05/0.2724, allocations: 27.94 kB / 0.8616 GB, free: 15.73 MB / 0.6856 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.064e-05/0.2725, allocations: 23.98 kB / 0.8616 GB, free: 15.71 MB / 0.6856 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008928/0.2734, allocations: 0.532 MB / 0.8621 GB, free: 15.18 MB / 0.6856 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 0.004518/0.2779, allocations: 4.524 MB / 0.8666 GB, free: 10.25 MB / 0.6856 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0006668/0.2786, allocations: 373.5 kB / 0.8669 GB, free: 9.879 MB / 0.6856 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003244/0.2789, allocations: 212.8 kB / 0.8671 GB, free: 9.668 MB / 0.6856 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001262/0.2802, allocations: 1.519 MB / 0.8686 GB, free: 7.816 MB / 0.6856 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.592e-05/0.2802, allocations: 38.5 kB / 0.8686 GB, free: 7.77 MB / 0.6856 GB Notification: Performance of pre-optimization done (n=43): time 2.064e-06/0.2802, allocations: 0 / 0.8686 GB, free: 7.77 MB / 0.6856 GB Notification: Performance of matching and sorting (n=43): time 0.002088/0.2823, allocations: 0.9006 MB / 0.8695 GB, free: 6.84 MB / 0.6856 GB Notification: Performance of inlineWhenForInitialization (initialization): time 3.406e-05/0.2824, allocations: 55.41 kB / 0.8696 GB, free: 6.773 MB / 0.6856 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001208/0.2836, allocations: 0.8871 MB / 0.8704 GB, free: 5.863 MB / 0.6856 GB Notification: Performance of collectPreVariables (initialization): time 4.976e-05/0.2836, allocations: 33.7 kB / 0.8705 GB, free: 5.824 MB / 0.6856 GB Notification: Performance of collectInitialEqns (initialization): time 0.0003729/0.284, allocations: 0.4917 MB / 0.8709 GB, free: 5.324 MB / 0.6856 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001378/0.2842, allocations: 153.8 kB / 0.8711 GB, free: 5.172 MB / 0.6856 GB Notification: Performance of simplifyInitialFunctions (initialization): time 7.343e-05/0.2842, allocations: 45.69 kB / 0.8711 GB, free: 5.121 MB / 0.6856 GB Notification: Performance of setup shared object (initialization): time 0.0001185/0.2844, allocations: 333.9 kB / 0.8714 GB, free: 4.789 MB / 0.6856 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000301/0.2847, allocations: 177 kB / 0.8716 GB, free: 4.617 MB / 0.6856 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003858/0.2851, allocations: 323.1 kB / 0.8719 GB, free: 4.238 MB / 0.6856 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007207/0.2858, allocations: 0.5253 MB / 0.8724 GB, free: 3.66 MB / 0.6856 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.019e-06/0.2858, allocations: 4 kB / 0.8724 GB, free: 3.656 MB / 0.6856 GB Notification: Performance of matching and sorting (n=64) (initialization): time 0.001483/0.2873, allocations: 0.7175 MB / 0.8731 GB, free: 2.934 MB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001684/0.2875, allocations: 209.5 kB / 0.8733 GB, free: 2.664 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.307e-05/0.2875, allocations: 7.984 kB / 0.8734 GB, free: 2.656 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005652/0.2881, allocations: 116.8 kB / 0.8735 GB, free: 2.539 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003711/0.2885, allocations: 111.8 kB / 0.8736 GB, free: 2.43 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005665/0.289, allocations: 0.6304 MB / 0.8742 GB, free: 1.773 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007435/0.2898, allocations: 91.45 kB / 0.8743 GB, free: 1.684 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001349/0.29, allocations: 31.98 kB / 0.8743 GB, free: 1.652 MB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 8.396e-06/0.29, allocations: 4 kB / 0.8743 GB, free: 1.648 MB / 0.6856 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001274/0.2913, allocations: 0.6094 MB / 0.8749 GB, free: 1.039 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.482e-05/0.2913, allocations: 12.12 kB / 0.8749 GB, free: 1.027 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004551/0.2917, allocations: 108.8 kB / 0.875 GB, free: 0.918 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003544/0.2921, allocations: 119.9 kB / 0.8751 GB, free: 0.8008 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0005288/0.2926, allocations: 0.6304 MB / 0.8757 GB, free: 148 kB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007236/0.2934, allocations: 83.55 kB / 0.8758 GB, free: 64 kB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.388e-05/0.2935, allocations: 27.98 kB / 0.8759 GB, free: 36 kB / 0.6856 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 18 * 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 (59): * Single equations (assignments): 56 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 2 * 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 {(1,3)} Notification: Performance of prepare postOptimizeDAE: time 0.0006278/0.2941, allocations: 344.9 kB / 0.8762 GB, free: 15.69 MB / 0.7012 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001483/0.2943, allocations: 98.78 kB / 0.8763 GB, free: 15.59 MB / 0.7012 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001904/0.2962, allocations: 1.015 MB / 0.8773 GB, free: 14.59 MB / 0.7012 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.043e-05/0.2962, allocations: 15.98 kB / 0.8773 GB, free: 14.58 MB / 0.7012 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 5.27e-06/0.2962, allocations: 0 / 0.8773 GB, free: 14.58 MB / 0.7012 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.00124/0.2975, allocations: 0.9319 MB / 0.8782 GB, free: 13.57 MB / 0.7012 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002876/0.3003, allocations: 1.939 MB / 0.8801 GB, free: 11.56 MB / 0.7012 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.32e-05/0.3004, allocations: 7.938 kB / 0.8801 GB, free: 11.55 MB / 0.7012 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003294/0.3007, allocations: 91.88 kB / 0.8802 GB, free: 11.46 MB / 0.7012 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0003227/0.301, allocations: 84.88 kB / 0.8803 GB, free: 11.38 MB / 0.7012 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.009e-05/0.3011, allocations: 19.94 kB / 0.8803 GB, free: 11.36 MB / 0.7012 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0004089/0.3015, allocations: 0.6225 MB / 0.8809 GB, free: 10.71 MB / 0.7012 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.593e-06/0.3015, allocations: 0 / 0.8809 GB, free: 10.71 MB / 0.7012 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001783/0.3033, allocations: 1.259 MB / 0.8821 GB, free: 9.426 MB / 0.7012 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003814/0.3037, allocations: 299.5 kB / 0.8824 GB, free: 9.113 MB / 0.7012 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001073/0.3038, allocations: 19.92 kB / 0.8824 GB, free: 9.094 MB / 0.7012 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0005194/0.3043, allocations: 63.89 kB / 0.8825 GB, free: 9.031 MB / 0.7012 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.026e-05/0.3044, allocations: 44.44 kB / 0.8825 GB, free: 8.988 MB / 0.7012 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 5.092e-05/0.3045, allocations: 27.98 kB / 0.8826 GB, free: 8.961 MB / 0.7012 GB Notification: Performance of sorting global known variables: time 0.0008309/0.3053, allocations: 0.6215 MB / 0.8832 GB, free: 8.328 MB / 0.7012 GB Notification: Performance of sort global known variables: time 1.5e-07/0.3053, allocations: 0 / 0.8832 GB, free: 8.328 MB / 0.7012 GB Notification: Performance of remove unused functions: time 0.001437/0.3068, allocations: 0.612 MB / 0.8838 GB, free: 7.715 MB / 0.7012 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 3 (pip.cor.del.x,pip.cor.timDel.x,pip.vol.dynBal.U) * 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 (55): * Single equations (assignments): 40 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 14 * 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 {(1,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.00266/0.3094, allocations: 2.199 MB / 0.8859 GB, free: 5.488 MB / 0.7012 GB Notification: Performance of simCode: created initialization part: time 0.001479/0.3109, allocations: 0.9304 MB / 0.8868 GB, free: 4.535 MB / 0.7012 GB Notification: Performance of simCode: created event and clocks part: time 3.066e-06/0.311, allocations: 1.5 kB / 0.8868 GB, free: 4.535 MB / 0.7012 GB Notification: Performance of simCode: created simulation system equations: time 0.0005175/0.3115, allocations: 410.5 kB / 0.8872 GB, free: 4.125 MB / 0.7012 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002156/0.3136, allocations: 466.2 kB / 0.8877 GB, free: 3.672 MB / 0.7012 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01244/0.3261, allocations: 8.2 MB / 0.8957 GB, free: 11.12 MB / 0.7169 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0005949/0.3267, allocations: 1.054 MB / 0.8967 GB, free: 10.03 MB / 0.7169 GB Notification: Performance of simCode: alias equations: time 0.000913/0.3277, allocations: 269.9 kB / 0.8969 GB, free: 9.785 MB / 0.7169 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004831/0.3281, allocations: 422.5 kB / 0.8973 GB, free: 9.375 MB / 0.7169 GB Notification: Performance of SimCode: time 7.21e-07/0.3281, allocations: 3.938 kB / 0.8974 GB, free: 9.371 MB / 0.7169 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 2.775/3.103, allocations: 32.78 MB / 0.9294 GB, free: 130.9 MB / 0.7325 GB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001694/3.103, allocations: 293.2 kB / 0.9296 GB, free: 130.5 MB / 0.7325 GB Notification: Performance of buildModelFMU: Generate platform static: time 3.284/6.387, allocations: 0 / 0.9296 GB, free: 130.5 MB / 0.7325 GB (rm -f Buildings_8_Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.pipe ; mkfifo Buildings_8_Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.pipe ; head -c 1048576 < Buildings_8_Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.pipe >> ../files/Buildings_8_Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_Buildings_8_Buildings_Fluid_FixedResistances_Validation_PlugFlowPipes_FlowReversal_fmu --startTime=0 --stopTime=150 --timeout=50 --tolerance=1e-06 Buildings_8_Buildings_Fluid_FixedResistances_Validation_PlugFlowPipes_FlowReversal.fmu > Buildings_8_Buildings.Fluid.FixedResistances.Validation.PlugFlowPipes.FlowReversal.pipe 2>&1)