Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_maint.7.0.x_Buildings.Fluid.Examples.ResistanceVolumeFlowReversal.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 7.0.3-maint.7.0.x/package.mo", uses=false) Using package Buildings with version 7.0.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.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: translateModel(Buildings.Fluid.Examples.ResistanceVolumeFlowReversal,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Examples.ResistanceVolumeFlowReversal") translateModel(Buildings.Fluid.Examples.ResistanceVolumeFlowReversal,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_maint.7.0.x_Buildings.Fluid.Examples.ResistanceVolumeFlowReversal") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0108/0.0108, allocations: 99.45 kB / 15.73 MB, free: 6.059 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001687/0.001687, allocations: 195.2 kB / 16.68 MB, free: 5.969 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.635/1.635, allocations: 205.1 MB / 222.6 MB, free: 4.516 MB / 174.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 7.0.3-maint.7.0.x/package.mo): time 1.796/1.796, allocations: 251.7 MB / 0.5094 GB, free: 3.004 MB / 414.1 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 0.001481/0.001481, allocations: 69.77 kB / 0.7258 GB, free: 9.008 MB / 0.545 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2391/0.2406, allocations: 104.7 MB / 0.828 GB, free: 204 kB / 0.6387 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Examples.ResistanceVolumeFlowReversal): time 0.6594/0.9, allocations: 80.86 MB / 0.907 GB, free: 12.59 MB / 0.7169 GB Notification: Performance of NFInst.instExpressions: time 0.03864/0.9387, allocations: 22.27 MB / 0.9287 GB, free: 12.26 MB / 0.7169 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.005879/0.9447, allocations: 112.9 kB / 0.9288 GB, free: 12.26 MB / 0.7169 GB Notification: Performance of NFTyping.typeComponents: time 0.004817/0.9496, allocations: 1.197 MB / 0.93 GB, free: 12.23 MB / 0.7169 GB Notification: Performance of NFTyping.typeBindings: time 0.0111/0.9607, allocations: 2.761 MB / 0.9327 GB, free: 12.11 MB / 0.7169 GB Notification: Performance of NFTyping.typeClassSections: time 0.01381/0.9745, allocations: 3.815 MB / 0.9364 GB, free: 12.01 MB / 0.7169 GB Notification: Performance of NFFlatten.flatten: time 0.0225/0.9971, allocations: 15.47 MB / 0.9515 GB, free: 6.637 MB / 0.7169 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01204/1.009, allocations: 7.207 MB / 0.9586 GB, free: 3.797 MB / 0.7169 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01596/1.025, allocations: 5.855 MB / 0.9643 GB, free: 1.699 MB / 0.7169 GB Notification: Performance of NFSimplifyModel.simplify: time 0.01103/1.036, allocations: 5.041 MB / 0.9692 GB, free: 15.28 MB / 0.7325 GB Notification: Performance of NFPackage.collectConstants: time 0.002749/1.039, allocations: 0.5375 MB / 0.9697 GB, free: 15.28 MB / 0.7325 GB Notification: Performance of NFFlatten.collectFunctions: time 0.009812/1.049, allocations: 1.93 MB / 0.9716 GB, free: 14.61 MB / 0.7325 GB Notification: Performance of NFScalarize.scalarize: time 0.006471/1.055, allocations: 1.62 MB / 0.9732 GB, free: 13.44 MB / 0.7325 GB Notification: Performance of NFVerifyModel.verify: time 0.01226/1.068, allocations: 3.286 MB / 0.9764 GB, free: 11.35 MB / 0.7325 GB Notification: Performance of NFConvertDAE.convert: time 0.02046/1.088, allocations: 9.184 MB / 0.9854 GB, free: 3.262 MB / 0.7325 GB Notification: Performance of FrontEnd - DAE generated: time 1.178e-05/1.088, allocations: 0 / 0.9854 GB, free: 3.262 MB / 0.7325 GB Notification: Performance of FrontEnd: time 2.515e-06/1.088, allocations: 0 / 0.9854 GB, free: 3.262 MB / 0.7325 GB Notification: Performance of Transformations before backend: time 0.0004296/1.089, allocations: 0 / 0.9854 GB, free: 3.262 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: 835 * Number of variables: 835 Notification: Performance of Generate backend data structure: time 0.02005/1.109, allocations: 6.658 MB / 0.9919 GB, free: 12.59 MB / 0.7481 GB Notification: Performance of prepare preOptimizeDAE: time 5.1e-05/1.109, allocations: 8.031 kB / 0.9919 GB, free: 12.58 MB / 0.7481 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005007/1.114, allocations: 0.8517 MB / 0.9927 GB, free: 11.73 MB / 0.7481 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01286/1.127, allocations: 5.303 MB / 0.9979 GB, free: 6.477 MB / 0.7481 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0003427/1.127, allocations: 254.5 kB / 0.9981 GB, free: 6.227 MB / 0.7481 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001775/1.129, allocations: 347.9 kB / 0.9985 GB, free: 5.887 MB / 0.7481 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01663/1.146, allocations: 5.729 MB / 1.004 GB, free: 15.91 MB / 0.7637 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001602/1.146, allocations: 11.88 kB / 1.004 GB, free: 15.89 MB / 0.7637 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001817/1.148, allocations: 144 kB / 1.004 GB, free: 15.75 MB / 0.7637 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001119/1.148, allocations: 83.94 kB / 1.004 GB, free: 15.67 MB / 0.7637 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01429/1.162, allocations: 5.511 MB / 1.01 GB, free: 10.15 MB / 0.7637 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 0.04657/1.209, allocations: 23.71 MB / 1.033 GB, free: 1.695 MB / 0.7794 GB Notification: Performance of preOpt comSubExp (simulation): time 0.005872/1.215, allocations: 2.718 MB / 1.035 GB, free: 14.98 MB / 0.795 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.003459/1.218, allocations: 1.911 MB / 1.037 GB, free: 13.07 MB / 0.795 GB Notification: Performance of preOpt evalFunc (simulation): time 0.01529/1.233, allocations: 7.071 MB / 1.044 GB, free: 5.73 MB / 0.795 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.003764/1.237, allocations: 1.914 MB / 1.046 GB, free: 3.805 MB / 0.795 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.004591/1.242, allocations: 0.7186 MB / 1.047 GB, free: 3.109 MB / 0.795 GB Notification: Performance of pre-optimization done (n=154): time 1.945e-05/1.242, allocations: 0 / 1.047 GB, free: 3.109 MB / 0.795 GB Notification: Performance of matching and sorting (n=154): time 0.03121/1.273, allocations: 8.039 MB / 1.055 GB, free: 11 MB / 0.8106 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.000171/1.273, allocations: 145.8 kB / 1.055 GB, free: 10.82 MB / 0.8106 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01456/1.288, allocations: 4.978 MB / 1.06 GB, free: 5.859 MB / 0.8106 GB Notification: Performance of collectPreVariables (initialization): time 0.001206/1.289, allocations: 65.7 kB / 1.06 GB, free: 5.789 MB / 0.8106 GB Notification: Performance of collectInitialEqns (initialization): time 0.003427/1.293, allocations: 2.482 MB / 1.062 GB, free: 3.301 MB / 0.8106 GB Notification: Performance of collectInitialBindings (initialization): time 0.001534/1.294, allocations: 0.5773 MB / 1.063 GB, free: 2.73 MB / 0.8106 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.002767/1.297, allocations: 0.6692 MB / 1.063 GB, free: 2.055 MB / 0.8106 GB Notification: Performance of setup shared object (initialization): time 0.0001297/1.297, allocations: 301.1 kB / 1.064 GB, free: 1.758 MB / 0.8106 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.003471/1.301, allocations: 1.742 MB / 1.065 GB, free: 8 kB / 0.8106 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004467/1.305, allocations: 2.94 MB / 1.068 GB, free: 12.5 MB / 0.8262 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.007556/1.313, allocations: 4.707 MB / 1.073 GB, free: 7.324 MB / 0.8262 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.457e-05/1.313, allocations: 8 kB / 1.073 GB, free: 7.316 MB / 0.8262 GB Notification: Performance of matching and sorting (n=340) (initialization): time 0.01417/1.327, allocations: 6.365 MB / 1.079 GB, free: 0.9297 MB / 0.8262 GB Notification: Performance of prepare postOptimizeDAE: time 8.528e-05/1.327, allocations: 45.7 kB / 1.079 GB, free: 0.8789 MB / 0.8262 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.53e-05/1.327, allocations: 39.94 kB / 1.079 GB, free: 0.8398 MB / 0.8262 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.07958/1.407, allocations: 13.55 MB / 1.092 GB, free: 3.332 MB / 0.8419 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003118/1.41, allocations: 0.6396 MB / 1.093 GB, free: 2.691 MB / 0.8419 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01127/1.421, allocations: 5.487 MB / 1.098 GB, free: 13.13 MB / 0.8575 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.006754/1.428, allocations: 224.4 kB / 1.099 GB, free: 12.91 MB / 0.8575 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001453/1.43, allocations: 191.8 kB / 1.099 GB, free: 12.72 MB / 0.8575 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.008928/1.439, allocations: 2.972 MB / 1.102 GB, free: 9.738 MB / 0.8575 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.004989/1.444, allocations: 2.878 MB / 1.104 GB, free: 6.293 MB / 0.8575 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.008451/1.452, allocations: 4.567 MB / 1.109 GB, free: 1.258 MB / 0.8575 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 4.981e-05/1.452, allocations: 12 kB / 1.109 GB, free: 1.246 MB / 0.8575 GB Notification: Performance of matching and sorting (n=340) (initialization_lambda0): time 0.01491/1.467, allocations: 6.054 MB / 1.115 GB, free: 11.17 MB / 0.8731 GB Notification: Performance of prepare postOptimizeDAE: time 7.715e-05/1.467, allocations: 53.67 kB / 1.115 GB, free: 11.11 MB / 0.8731 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.552e-05/1.467, allocations: 35.98 kB / 1.115 GB, free: 11.07 MB / 0.8731 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.07588/1.543, allocations: 13.3 MB / 1.128 GB, free: 13.8 MB / 0.8887 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003421/1.547, allocations: 0.6318 MB / 1.129 GB, free: 13.17 MB / 0.8887 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01613/1.563, allocations: 8.913 MB / 1.137 GB, free: 3.953 MB / 0.8887 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005187/1.568, allocations: 220.8 kB / 1.137 GB, free: 3.738 MB / 0.8887 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0008216/1.569, allocations: 195.8 kB / 1.138 GB, free: 3.547 MB / 0.8887 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 150 * Number of states: 0 () * Number of discrete variables: 7 (pulse.count,$PRE.pulse.count,pulse.T_start,$PRE.pulse.T_start,$whenCondition1,nRes.y,allowFlowReversal.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (285): * Single equations (assignments): 278 * Array equations: 2 * Algorithm blocks: 1 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * 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): 3 systems {(11,15), (10,11), (2,5)} Notification: Performance of prepare postOptimizeDAE: time 0.001401/1.57, allocations: 365.5 kB / 1.138 GB, free: 3.184 MB / 0.8887 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.00223/1.573, allocations: 484.9 kB / 1.138 GB, free: 2.707 MB / 0.8887 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01056/1.583, allocations: 4.54 MB / 1.143 GB, free: 14.15 MB / 0.9044 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.558e-05/1.583, allocations: 20 kB / 1.143 GB, free: 14.13 MB / 0.9044 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 7.163e-06/1.583, allocations: 0 / 1.143 GB, free: 14.13 MB / 0.9044 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.01079/1.594, allocations: 5.544 MB / 1.148 GB, free: 8.336 MB / 0.9044 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02253/1.617, allocations: 9.777 MB / 1.158 GB, free: 14.52 MB / 0.92 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.156e-05/1.617, allocations: 0 / 1.158 GB, free: 14.52 MB / 0.92 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002238/1.619, allocations: 367.6 kB / 1.158 GB, free: 14.16 MB / 0.92 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.06854/1.687, allocations: 11.71 MB / 1.17 GB, free: 2.492 MB / 0.92 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0006029/1.688, allocations: 55.95 kB / 1.17 GB, free: 2.438 MB / 0.92 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006587/1.695, allocations: 3.514 MB / 1.173 GB, free: 14.85 MB / 0.9356 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.749e-06/1.695, allocations: 96 / 1.173 GB, free: 14.85 MB / 0.9356 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02741/1.722, allocations: 8.548 MB / 1.181 GB, free: 6.273 MB / 0.9356 GB Notification: Performance of postOpt removeConstants (simulation): time 0.00474/1.727, allocations: 0.9429 MB / 1.182 GB, free: 5.309 MB / 0.9356 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.002402/1.729, allocations: 36 kB / 1.182 GB, free: 5.273 MB / 0.9356 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004478/1.734, allocations: 131.8 kB / 1.183 GB, free: 5.145 MB / 0.9356 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0006472/1.735, allocations: 109.8 kB / 1.183 GB, free: 5.039 MB / 0.9356 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.000678/1.735, allocations: 79.94 kB / 1.183 GB, free: 4.961 MB / 0.9356 GB Notification: Performance of sorting global known variables: time 0.009823/1.745, allocations: 3.407 MB / 1.186 GB, free: 1.57 MB / 0.9356 GB Notification: Performance of sort global known variables: time 8.52e-07/1.745, allocations: 0 / 1.186 GB, free: 1.57 MB / 0.9356 GB Notification: Performance of remove unused functions: time 0.0141/1.759, allocations: 2.686 MB / 1.189 GB, free: 14.88 MB / 0.9512 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 4 (pump.vol.dynBal.U,hea.outCon.T,val.filter.x[1],val.filter.x[2]) * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count) * Number of discrete states: 1 (pulse.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (134): * Single equations (assignments): 125 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * 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): 3 systems {(11,5), (2,5), (10,11)} Notification: Performance of Backend phase and start with SimCode phase: time 0.002394/1.762, allocations: 0.5767 MB / 1.189 GB, free: 14.34 MB / 0.9512 GB Notification: Performance of simCode: created initialization part: time 0.0214/1.783, allocations: 7.513 MB / 1.197 GB, free: 6.77 MB / 0.9512 GB Notification: Performance of simCode: created event and clocks part: time 1.121e-05/1.783, allocations: 0.8906 kB / 1.197 GB, free: 6.77 MB / 0.9512 GB Notification: Performance of simCode: created simulation system equations: time 0.006537/1.79, allocations: 2.246 MB / 1.199 GB, free: 4.531 MB / 0.9512 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01772/1.808, allocations: 2.74 MB / 1.201 GB, free: 1.859 MB / 0.9512 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02075/1.828, allocations: 10.05 MB / 1.211 GB, free: 7.777 MB / 0.9669 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003177/1.832, allocations: 3.229 MB / 1.214 GB, free: 4.52 MB / 0.9669 GB Notification: Performance of simCode: alias equations: time 0.006129/1.838, allocations: 1.668 MB / 1.216 GB, free: 2.848 MB / 0.9669 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001443/1.839, allocations: 351.2 kB / 1.216 GB, free: 2.504 MB / 0.9669 GB Notification: Performance of SimCode: time 1.743e-06/1.839, allocations: 0 / 1.216 GB, free: 2.504 MB / 0.9669 GB Notification: Performance of Templates: time 0.7159/2.555, allocations: 113.2 MB / 1.327 GB, free: 377.4 MB / 1.045 GB make -j1 -f Buildings_maint.7.0.x_Buildings.Fluid.Examples.ResistanceVolumeFlowReversal.makefile (rm -f Buildings_maint.7.0.x_Buildings.Fluid.Examples.ResistanceVolumeFlowReversal.pipe ; mkfifo Buildings_maint.7.0.x_Buildings.Fluid.Examples.ResistanceVolumeFlowReversal.pipe ; head -c 1048576 < Buildings_maint.7.0.x_Buildings.Fluid.Examples.ResistanceVolumeFlowReversal.pipe >> ../files/Buildings_maint.7.0.x_Buildings.Fluid.Examples.ResistanceVolumeFlowReversal.sim & ./Buildings_maint.7.0.x_Buildings.Fluid.Examples.ResistanceVolumeFlowReversal -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_maint.7.0.x_Buildings.Fluid.Examples.ResistanceVolumeFlowReversal.pipe 2>&1)