Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD.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: translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD") translateModel(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001745/0.001745, allocations: 108 kB / 15.61 MB, free: 152 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.002306/0.002306, allocations: 196.9 kB / 16.53 MB, free: 6.664 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.578/1.578, allocations: 205.1 MB / 222.4 MB, free: 4.598 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 1.718/1.718, allocations: 292.3 MB / 0.5489 GB, free: 12.83 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 0.002179/0.002179, allocations: 71.27 kB / 0.6715 GB, free: 26.3 MB / 0.5294 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3085/0.3107, allocations: 114.6 MB / 0.7834 GB, free: 13.47 MB / 0.6075 GB Notification: Performance of NFInst.instantiate(Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD): time 0.02052/0.3312, allocations: 16.32 MB / 0.7993 GB, free: 13.09 MB / 0.6231 GB Notification: Performance of NFInst.instExpressions: time 0.01202/0.3433, allocations: 5.932 MB / 0.8051 GB, free: 7.141 MB / 0.6231 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001764/0.3451, allocations: 47.88 kB / 0.8052 GB, free: 7.094 MB / 0.6231 GB Notification: Performance of NFTyping.typeComponents: time 0.003795/0.349, allocations: 1.372 MB / 0.8065 GB, free: 5.719 MB / 0.6231 GB Notification: Performance of NFTyping.typeBindings: time 0.00354/0.3525, allocations: 1.027 MB / 0.8075 GB, free: 4.688 MB / 0.6231 GB Notification: Performance of NFTyping.typeClassSections: time 0.003635/0.3562, allocations: 1.021 MB / 0.8085 GB, free: 3.664 MB / 0.6231 GB Notification: Performance of NFFlatten.flatten: time 0.005365/0.3616, allocations: 4.136 MB / 0.8125 GB, free: 15.52 MB / 0.6387 GB Notification: Performance of NFFlatten.resolveConnections: time 0.009875/0.3715, allocations: 5.44 MB / 0.8178 GB, free: 10 MB / 0.6387 GB Notification: Performance of NFEvalConstants.evaluate: time 0.004289/0.3758, allocations: 1.827 MB / 0.8196 GB, free: 8.172 MB / 0.6387 GB Notification: Performance of NFSimplifyModel.simplify: time 0.004539/0.3804, allocations: 2.189 MB / 0.8218 GB, free: 5.977 MB / 0.6387 GB Notification: Performance of NFPackage.collectConstants: time 0.001765/0.3822, allocations: 432 kB / 0.8222 GB, free: 5.555 MB / 0.6387 GB Notification: Performance of NFFlatten.collectFunctions: time 0.003615/0.3858, allocations: 1.116 MB / 0.8233 GB, free: 4.438 MB / 0.6387 GB Notification: Performance of NFScalarize.scalarize: time 0.003305/0.3892, allocations: 1.708 MB / 0.8249 GB, free: 2.727 MB / 0.6387 GB Notification: Performance of NFVerifyModel.verify: time 0.004449/0.3937, allocations: 1.689 MB / 0.8266 GB, free: 1.031 MB / 0.6387 GB Notification: Performance of NFConvertDAE.convert: time 0.00844/0.4021, allocations: 6.276 MB / 0.8327 GB, free: 10.74 MB / 0.6544 GB Notification: Performance of FrontEnd - DAE generated: time 9.868e-06/0.4022, allocations: 0 / 0.8327 GB, free: 10.74 MB / 0.6544 GB Notification: Performance of FrontEnd: time 2.395e-06/0.4022, allocations: 3.938 kB / 0.8327 GB, free: 10.73 MB / 0.6544 GB Notification: Performance of Transformations before backend: time 0.0002054/0.4024, allocations: 0 / 0.8327 GB, free: 10.73 MB / 0.6544 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 769 * Number of variables: 769 Notification: Performance of Generate backend data structure: time 0.008725/0.4111, allocations: 2.947 MB / 0.8356 GB, free: 7.727 MB / 0.6544 GB Notification: Performance of prepare preOptimizeDAE: time 5.705e-05/0.4112, allocations: 8.031 kB / 0.8356 GB, free: 7.719 MB / 0.6544 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01156/0.4228, allocations: 2.007 MB / 0.8376 GB, free: 5.707 MB / 0.6544 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004252/0.4271, allocations: 1.593 MB / 0.8391 GB, free: 4.07 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002033/0.4273, allocations: 218.1 kB / 0.8393 GB, free: 3.855 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.001073/0.4284, allocations: 276.4 kB / 0.8396 GB, free: 3.586 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.01512/0.4435, allocations: 5.689 MB / 0.8451 GB, free: 13.8 MB / 0.67 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.412e-05/0.4437, allocations: 7.938 kB / 0.8452 GB, free: 13.8 MB / 0.67 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0004697/0.4441, allocations: 124 kB / 0.8453 GB, free: 13.68 MB / 0.67 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0003657/0.4445, allocations: 200.7 kB / 0.8455 GB, free: 13.48 MB / 0.67 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01488/0.4594, allocations: 5.83 MB / 0.8512 GB, free: 7.633 MB / 0.67 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0292/0.4886, allocations: 22.57 MB / 0.8732 GB, free: 15.03 MB / 0.7012 GB Notification: Performance of preOpt comSubExp (simulation): time 0.005798/0.4945, allocations: 3.025 MB / 0.8762 GB, free: 11.83 MB / 0.7012 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.004861/0.4994, allocations: 1.944 MB / 0.8781 GB, free: 9.867 MB / 0.7012 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0002144/0.4996, allocations: 122 kB / 0.8782 GB, free: 9.73 MB / 0.7012 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.09e-05/0.4997, allocations: 51.56 kB / 0.8782 GB, free: 9.672 MB / 0.7012 GB Notification: Performance of pre-optimization done (n=132): time 3.377e-06/0.4997, allocations: 3.938 kB / 0.8782 GB, free: 9.668 MB / 0.7012 GB Notification: Performance of matching and sorting (n=174): time 0.04122/0.5409, allocations: 12.83 MB / 0.8908 GB, free: 12.8 MB / 0.7169 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001233/0.5411, allocations: 238.9 kB / 0.891 GB, free: 12.52 MB / 0.7169 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001356/0.5424, allocations: 0.9453 MB / 0.8919 GB, free: 11.56 MB / 0.7169 GB Notification: Performance of collectPreVariables (initialization): time 0.0003465/0.5428, allocations: 57.7 kB / 0.892 GB, free: 11.5 MB / 0.7169 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007875/0.5436, allocations: 1.162 MB / 0.8931 GB, free: 10.32 MB / 0.7169 GB Notification: Performance of collectInitialBindings (initialization): time 0.0007114/0.5443, allocations: 0.597 MB / 0.8937 GB, free: 9.715 MB / 0.7169 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000786/0.5451, allocations: 459.7 kB / 0.8941 GB, free: 9.258 MB / 0.7169 GB Notification: Performance of setup shared object (initialization): time 0.0001535/0.5453, allocations: 334 kB / 0.8944 GB, free: 8.926 MB / 0.7169 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.00449/0.5498, allocations: 1.875 MB / 0.8963 GB, free: 7.039 MB / 0.7169 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.004786/0.5546, allocations: 2.459 MB / 0.8987 GB, free: 4.316 MB / 0.7169 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.009509/0.5641, allocations: 4.374 MB / 0.9029 GB, free: 15.69 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.322e-05/0.5642, allocations: 4 kB / 0.9029 GB, free: 15.68 MB / 0.7325 GB Notification: Performance of matching and sorting (n=282) (initialization): time 0.01342/0.5776, allocations: 5.431 MB / 0.9082 GB, free: 10.23 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 4.131e-05/0.5777, allocations: 12 kB / 0.9083 GB, free: 10.22 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.398e-05/0.5777, allocations: 20 kB / 0.9083 GB, free: 10.2 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003352/0.5811, allocations: 1.213 MB / 0.9095 GB, free: 8.984 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003512/0.5846, allocations: 0.7292 MB / 0.9102 GB, free: 8.254 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.5414/1.126, allocations: 11.42 MB / 0.9213 GB, free: 126.1 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003735/1.13, allocations: 457.6 kB / 0.9218 GB, free: 126.1 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004773/1.13, allocations: 112.3 kB / 0.9219 GB, free: 126 MB / 0.7325 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.007039/1.137, allocations: 2.945 MB / 0.9247 GB, free: 125.1 MB / 0.7325 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.005011/1.142, allocations: 2.449 MB / 0.9271 GB, free: 123.8 MB / 0.7325 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.009635/1.152, allocations: 4.35 MB / 0.9314 GB, free: 121.9 MB / 0.7325 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.339e-05/1.152, allocations: 5.25 kB / 0.9314 GB, free: 121.9 MB / 0.7325 GB Notification: Performance of matching and sorting (n=282) (initialization_lambda0): time 0.01456/1.167, allocations: 5.36 MB / 0.9366 GB, free: 120.3 MB / 0.7325 GB Notification: Performance of prepare postOptimizeDAE: time 4.706e-05/1.167, allocations: 13.39 kB / 0.9366 GB, free: 120.3 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.483e-05/1.167, allocations: 17.5 kB / 0.9367 GB, free: 120.3 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.003884/1.171, allocations: 1.127 MB / 0.9378 GB, free: 120 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003889/1.175, allocations: 0.7342 MB / 0.9385 GB, free: 120 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01344/1.188, allocations: 11.25 MB / 0.9495 GB, free: 113.5 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00313/1.191, allocations: 452.2 kB / 0.9499 GB, free: 113.4 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003305/1.192, allocations: 114.3 kB / 0.95 GB, free: 113.4 MB / 0.7325 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 81 * 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 (212): * Single equations (assignments): 210 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * 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): 2 systems {(5,31,92.0%), (5,31,92.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0005699/1.192, allocations: 306.8 kB / 0.9503 GB, free: 113.1 MB / 0.7325 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004133/1.193, allocations: 124.6 kB / 0.9504 GB, free: 113.1 MB / 0.7325 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01269/1.205, allocations: 4.968 MB / 0.9553 GB, free: 111.2 MB / 0.7325 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.574e-05/1.205, allocations: 16.91 kB / 0.9553 GB, free: 111.2 MB / 0.7325 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.011e-05/1.205, allocations: 12.44 kB / 0.9553 GB, free: 111.2 MB / 0.7325 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.138e-05/1.205, allocations: 10.06 kB / 0.9553 GB, free: 111.2 MB / 0.7325 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01704/1.222, allocations: 8.947 MB / 0.964 GB, free: 105.7 MB / 0.7325 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.861e-05/1.222, allocations: 7.531 kB / 0.964 GB, free: 105.7 MB / 0.7325 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002392/1.225, allocations: 0.5278 MB / 0.9646 GB, free: 105.5 MB / 0.7325 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.002353/1.227, allocations: 0.9786 MB / 0.9655 GB, free: 105 MB / 0.7325 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001776/1.227, allocations: 56.3 kB / 0.9656 GB, free: 105 MB / 0.7325 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.01138/1.239, allocations: 10.92 MB / 0.9762 GB, free: 95.86 MB / 0.7325 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.741e-06/1.239, allocations: 11.94 kB / 0.9762 GB, free: 95.85 MB / 0.7325 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01025/1.249, allocations: 4.766 MB / 0.9809 GB, free: 90.97 MB / 0.7325 GB Notification: Performance of postOpt removeConstants (simulation): time 0.000833/1.25, allocations: 498 kB / 0.9814 GB, free: 90.47 MB / 0.7325 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002588/1.25, allocations: 43.98 kB / 0.9814 GB, free: 90.43 MB / 0.7325 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002389/1.253, allocations: 395.4 kB / 0.9818 GB, free: 90.04 MB / 0.7325 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.000336/1.253, allocations: 156.9 kB / 0.9819 GB, free: 89.88 MB / 0.7325 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001274/1.253, allocations: 67.95 kB / 0.982 GB, free: 89.82 MB / 0.7325 GB Notification: Performance of sorting global known variables: time 0.0007273/1.254, allocations: 0.6864 MB / 0.9827 GB, free: 89.13 MB / 0.7325 GB Notification: Performance of sort global known variables: time 1.4e-07/1.254, allocations: 0 / 0.9827 GB, free: 89.13 MB / 0.7325 GB Notification: Performance of remove unused functions: time 0.003504/1.257, allocations: 1.188 MB / 0.9838 GB, free: 87.94 MB / 0.7325 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 32 * 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 simulation (103): * Single equations (assignments): 101 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * 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): 2 systems {(4,32,100.0%), (8,28,53.1%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0002769/1.258, allocations: 159.6 kB / 0.984 GB, free: 87.78 MB / 0.7325 GB Notification: Performance of simCode: created initialization part: time 0.01818/1.276, allocations: 8.581 MB / 0.9924 GB, free: 79.18 MB / 0.7325 GB Notification: Performance of simCode: created event and clocks part: time 1.125e-05/1.276, allocations: 4.125 kB / 0.9924 GB, free: 79.17 MB / 0.7325 GB Notification: Performance of simCode: created simulation system equations: time 0.00556/1.281, allocations: 2.666 MB / 0.995 GB, free: 76.48 MB / 0.7325 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001611/1.283, allocations: 198 kB / 0.9952 GB, free: 76.3 MB / 0.7325 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01729/1.3, allocations: 7.365 MB / 1.002 GB, free: 68.82 MB / 0.7325 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001594/1.302, allocations: 2.308 MB / 1.005 GB, free: 66.48 MB / 0.7325 GB Notification: Performance of simCode: alias equations: time 0.003277/1.305, allocations: 1.236 MB / 1.006 GB, free: 65.25 MB / 0.7325 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004687/1.306, allocations: 123.3 kB / 1.006 GB, free: 65.13 MB / 0.7325 GB Notification: Performance of SimCode: time 9.52e-07/1.306, allocations: 0 / 1.006 GB, free: 65.13 MB / 0.7325 GB Notification: Performance of Templates: time 0.05501/1.361, allocations: 36.51 MB / 1.042 GB, free: 28.83 MB / 0.7325 GB make -j1 -f Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD.makefile (rm -f Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD.pipe ; mkfifo Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD.pipe ; head -c 1048576 < Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD.pipe >> ../files/Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD.sim & ./Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_8_Buildings.Electrical.AC.ThreePhasesUnbalanced.Conversion.Examples.TransformerStepDownYD.pipe 2>&1)