Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesBalanced.Conversion.Examples.ACACConverter.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: "" <> buildModelFMU(IBPSA.Electrical.AC.ThreePhasesBalanced.Conversion.Examples.ACACConverter,fileNamePrefix="IBPSA_latest_IBPSA_Electrical_AC_ThreePhasesBalanced_Conversion_Examples_ACACConverter",fmuType="me",version="2.0",platforms={"static"})
"" <> buildModelFMU(IBPSA.Electrical.AC.ThreePhasesBalanced.Conversion.Examples.ACACConverter,fileNamePrefix="IBPSA_latest_IBPSA_Electrical_AC_ThreePhasesBalanced_Conversion_Examples_ACACConverter",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 0.001575/0.001575, allocations: 102.9 kB / 16.4 MB, free: 6.492 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001863/0.001863, allocations: 195.8 kB / 17.34 MB, free: 5.766 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.389/1.389, allocations: 222.9 MB / 241 MB, free: 15.15 MB / 206.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IBPSA 4.0.0-master/package.mo): time 0.7267/0.7267, allocations: 115.3 MB / 406.5 MB, free: 6.172 MB / 318.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.001222/0.001222, allocations: 58.36 kB / 0.5572 GB, free: 32.66 MB / 446.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.177/0.1783, allocations: 76.19 MB / 0.6316 GB, free: 5.031 MB / 478.1 MB
Notification: Performance of NFInst.instantiate(IBPSA.Electrical.AC.ThreePhasesBalanced.Conversion.Examples.ACACConverter): time 0.005344/0.1837, allocations: 2.79 MB / 0.6343 GB, free: 2.227 MB / 478.1 MB
Notification: Performance of NFInst.instExpressions: time 0.003411/0.1871, allocations: 2.092 MB / 0.6364 GB, free: 124 kB / 478.1 MB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0002005/0.1874, allocations: 4 kB / 0.6364 GB, free: 120 kB / 478.1 MB
Notification: Performance of NFTyping.typeComponents: time 0.0008742/0.1883, allocations: 235 kB / 0.6366 GB, free: 15.89 MB / 494.1 MB
Notification: Performance of NFTyping.typeBindings: time 0.0006397/0.1889, allocations: 215 kB / 0.6368 GB, free: 15.68 MB / 494.1 MB
Notification: Performance of NFTyping.typeClassSections: time 0.0009773/0.1899, allocations: 275.2 kB / 0.637 GB, free: 15.41 MB / 494.1 MB
Notification: Performance of NFFlatten.flatten: time 0.0006141/0.1906, allocations: 311.1 kB / 0.6373 GB, free: 15.1 MB / 494.1 MB
Notification: Performance of NFFlatten.resolveConnections: time 0.0004841/0.1911, allocations: 156.8 kB / 0.6375 GB, free: 14.95 MB / 494.1 MB
Notification: Performance of NFEvalConstants.evaluate: time 0.0003479/0.1914, allocations: 127.5 kB / 0.6376 GB, free: 14.82 MB / 494.1 MB
Notification: Performance of NFSimplifyModel.simplify: time 0.0004441/0.1919, allocations: 159.4 kB / 0.6378 GB, free: 14.67 MB / 494.1 MB
Notification: Performance of NFPackage.collectConstants: time 6.058e-05/0.1919, allocations: 20 kB / 0.6378 GB, free: 14.65 MB / 494.1 MB
Notification: Performance of NFFlatten.collectFunctions: time 0.0008929/0.1928, allocations: 415.2 kB / 0.6382 GB, free: 14.24 MB / 494.1 MB
Notification: Performance of NFScalarize.scalarize: time 0.0001581/0.193, allocations: 95.77 kB / 0.6383 GB, free: 14.15 MB / 494.1 MB
Notification: Performance of NFVerifyModel.verify: time 0.0001702/0.1932, allocations: 115.5 kB / 0.6384 GB, free: 14.04 MB / 494.1 MB
Notification: Performance of NFConvertDAE.convert: time 0.001032/0.1942, allocations: 491.5 kB / 0.6389 GB, free: 13.55 MB / 494.1 MB
Notification: Performance of FrontEnd - DAE generated: time 4.589e-06/0.1942, allocations: 4 kB / 0.6389 GB, free: 13.55 MB / 494.1 MB
Notification: Performance of FrontEnd: time 1.333e-06/0.1943, allocations: 4 kB / 0.6389 GB, free: 13.55 MB / 494.1 MB
Notification: Performance of Transformations before backend: time 9.378e-06/0.1943, allocations: 0 / 0.6389 GB, free: 13.55 MB / 494.1 MB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 54
 * Number of variables: 54
Notification: Performance of Generate backend data structure: time 0.001197/0.1955, allocations: 0.5536 MB / 0.6394 GB, free: 12.95 MB / 494.1 MB
Notification: Performance of prepare preOptimizeDAE: time 4.863e-05/0.1955, allocations: 8.031 kB / 0.6394 GB, free: 12.94 MB / 494.1 MB
Notification: Performance of preOpt introduceOutputAliases (simulation): time 7.734e-05/0.1956, allocations: 58.72 kB / 0.6395 GB, free: 12.87 MB / 494.1 MB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001065/0.1967, allocations: 128.5 kB / 0.6396 GB, free: 12.75 MB / 494.1 MB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0004129/0.1971, allocations: 264.4 kB / 0.6398 GB, free: 12.45 MB / 494.1 MB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.591e-05/0.1971, allocations: 12.81 kB / 0.6399 GB, free: 12.44 MB / 494.1 MB
Notification: Performance of preOpt expandDerOperator (simulation): time 6.13e-05/0.1972, allocations: 19.94 kB / 0.6399 GB, free: 12.42 MB / 494.1 MB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.0007974/0.198, allocations: 401.9 kB / 0.6403 GB, free: 11.99 MB / 494.1 MB
Notification: Performance of preOpt findStateOrder (simulation): time 2.335e-05/0.1981, allocations: 3.984 kB / 0.6403 GB, free: 11.99 MB / 494.1 MB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.417e-05/0.1981, allocations: 8 kB / 0.6403 GB, free: 11.98 MB / 494.1 MB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.908e-05/0.1981, allocations: 19.98 kB / 0.6403 GB, free: 11.96 MB / 494.1 MB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0008332/0.199, allocations: 383.4 kB / 0.6407 GB, free: 11.59 MB / 494.1 MB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.002305/0.2013, allocations: 1.734 MB / 0.6423 GB, free: 9.707 MB / 494.1 MB
Notification: Performance of preOpt comSubExp (simulation): time 0.0007492/0.2021, allocations: 360.9 kB / 0.6427 GB, free: 9.336 MB / 494.1 MB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0003509/0.2024, allocations: 194 kB / 0.6429 GB, free: 9.141 MB / 494.1 MB
Notification: Performance of preOpt evalFunc (simulation): time 0.000149/0.2026, allocations: 89.09 kB / 0.643 GB, free: 9.035 MB / 494.1 MB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.917e-05/0.2026, allocations: 42.42 kB / 0.643 GB, free: 8.984 MB / 494.1 MB
Notification: Performance of pre-optimization done (n=25): time 1.783e-06/0.2026, allocations: 0 / 0.643 GB, free: 8.984 MB / 494.1 MB
Notification: Performance of matching and sorting (n=35): time 0.008652/0.2113, allocations: 2.049 MB / 0.645 GB, free: 6.93 MB / 494.1 MB
Notification: Performance of inlineWhenForInitialization (initialization): time 6.186e-05/0.2114, allocations: 85.05 kB / 0.6451 GB, free: 6.828 MB / 494.1 MB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001932/0.2116, allocations: 182.9 kB / 0.6453 GB, free: 6.637 MB / 494.1 MB
Notification: Performance of collectPreVariables (initialization): time 4.358e-05/0.2116, allocations: 33.69 kB / 0.6453 GB, free: 6.598 MB / 494.1 MB
Notification: Performance of collectInitialEqns (initialization): time 0.0001263/0.2118, allocations: 152.3 kB / 0.6454 GB, free: 6.445 MB / 494.1 MB
Notification: Performance of collectInitialBindings (initialization): time 0.0001306/0.2119, allocations: 122.2 kB / 0.6455 GB, free: 6.324 MB / 494.1 MB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001864/0.2121, allocations: 85.58 kB / 0.6456 GB, free: 6.234 MB / 494.1 MB
Notification: Performance of setup shared object (initialization): time 0.0001468/0.2123, allocations: 330.8 kB / 0.6459 GB, free: 5.902 MB / 494.1 MB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005983/0.2129, allocations: 268.6 kB / 0.6462 GB, free: 5.637 MB / 494.1 MB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006299/0.2135, allocations: 345.5 kB / 0.6465 GB, free: 5.266 MB / 494.1 MB
Notification: Performance of analyzeInitialSystem (initialization): time 0.001213/0.2147, allocations: 0.6267 MB / 0.6471 GB, free: 4.609 MB / 494.1 MB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.136e-06/0.2147, allocations: 0 / 0.6471 GB, free: 4.609 MB / 494.1 MB
Notification: Performance of matching and sorting (n=44) (initialization): time 0.001394/0.2161, allocations: 0.662 MB / 0.6478 GB, free: 3.941 MB / 494.1 MB
Notification: Performance of prepare postOptimizeDAE: time 1.858e-05/0.2162, allocations: 8.281 kB / 0.6478 GB, free: 3.934 MB / 494.1 MB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.524e-06/0.2162, allocations: 4 kB / 0.6478 GB, free: 3.93 MB / 494.1 MB
Notification: Performance of postOpt tearingSystem (initialization): time 1.786e-05/0.2162, allocations: 4 kB / 0.6478 GB, free: 3.926 MB / 494.1 MB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0009529/0.2172, allocations: 151.8 kB / 0.648 GB, free: 3.777 MB / 494.1 MB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 1.132e-05/0.2172, allocations: 4 kB / 0.648 GB, free: 3.773 MB / 494.1 MB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004596/0.2177, allocations: 51.92 kB / 0.648 GB, free: 3.723 MB / 494.1 MB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.597e-05/0.2177, allocations: 23.98 kB / 0.648 GB, free: 3.699 MB / 494.1 MB
Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.0006545/0.2184, allocations: 367.9 kB / 0.6484 GB, free: 3.336 MB / 494.1 MB
Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.0006171/0.219, allocations: 345.8 kB / 0.6487 GB, free: 2.965 MB / 494.1 MB
Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001162/0.2202, allocations: 0.5901 MB / 0.6493 GB, free: 2.344 MB / 494.1 MB
Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.995e-06/0.2202, allocations: 0 / 0.6493 GB, free: 2.344 MB / 494.1 MB
Notification: Performance of matching and sorting (n=44) (initialization_lambda0): time 0.001328/0.2215, allocations: 0.6455 MB / 0.6499 GB, free: 1.691 MB / 494.1 MB
Notification: Performance of prepare postOptimizeDAE: time 1.42e-05/0.2215, allocations: 6.188 kB / 0.6499 GB, free: 1.688 MB / 494.1 MB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.452e-06/0.2216, allocations: 4 kB / 0.6499 GB, free: 1.684 MB / 494.1 MB
Notification: Performance of postOpt tearingSystem (initialization): time 1.009e-05/0.2216, allocations: 4 kB / 0.6499 GB, free: 1.68 MB / 494.1 MB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008753/0.2224, allocations: 156 kB / 0.6501 GB, free: 1.527 MB / 494.1 MB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 9.107e-06/0.2225, allocations: 4 kB / 0.6501 GB, free: 1.523 MB / 494.1 MB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004543/0.2229, allocations: 51.92 kB / 0.6501 GB, free: 1.473 MB / 494.1 MB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.158e-05/0.223, allocations: 16 kB / 0.6501 GB, free: 1.457 MB / 494.1 MB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 10
 * 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 (44):
 * Single equations (assignments): 44
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.0001615/0.2231, allocations: 204.1 kB / 0.6503 GB, free: 1.25 MB / 494.1 MB
Notification: Performance of postOpt lateInlineFunction (simulation): time 8.714e-05/0.2232, allocations: 19.81 kB / 0.6504 GB, free: 1.23 MB / 494.1 MB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0014/0.2246, allocations: 0.6879 MB / 0.651 GB, free: 0.5273 MB / 494.1 MB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.733e-06/0.2247, allocations: 7.938 kB / 0.651 GB, free: 0.5195 MB / 494.1 MB
Notification: Performance of postOpt constantLinearSystem (simulation): time 7.054e-06/0.2247, allocations: 0 / 0.651 GB, free: 0.5195 MB / 494.1 MB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.913e-06/0.2247, allocations: 4 kB / 0.651 GB, free: 0.5156 MB / 494.1 MB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002369/0.2271, allocations: 1.368 MB / 0.6524 GB, free: 15.05 MB / 0.4981 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.202e-06/0.2271, allocations: 4 kB / 0.6524 GB, free: 15.05 MB / 0.4981 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005762/0.2277, allocations: 123.8 kB / 0.6525 GB, free: 14.93 MB / 0.4981 GB
Notification: Performance of postOpt tearingSystem (simulation): time 7.935e-06/0.2277, allocations: 4 kB / 0.6525 GB, free: 14.92 MB / 0.4981 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.579e-05/0.2277, allocations: 11.94 kB / 0.6525 GB, free: 14.91 MB / 0.4981 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 4.949e-06/0.2277, allocations: 4.25 kB / 0.6525 GB, free: 14.91 MB / 0.4981 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.2e-06/0.2278, allocations: 8 kB / 0.6525 GB, free: 14.9 MB / 0.4981 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00106/0.2288, allocations: 0.7068 MB / 0.6532 GB, free: 14.15 MB / 0.4981 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0001864/0.229, allocations: 140.8 kB / 0.6534 GB, free: 14 MB / 0.4981 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.148e-05/0.2291, allocations: 15.88 kB / 0.6534 GB, free: 13.98 MB / 0.4981 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003591/0.2294, allocations: 39.94 kB / 0.6534 GB, free: 13.94 MB / 0.4981 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 9.083e-05/0.2295, allocations: 27.97 kB / 0.6534 GB, free: 13.91 MB / 0.4981 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.68e-05/0.2296, allocations: 16 kB / 0.6534 GB, free: 13.9 MB / 0.4981 GB
Notification: Performance of sorting global known variables: time 0.0001901/0.2298, allocations: 152.3 kB / 0.6536 GB, free: 13.75 MB / 0.4981 GB
Notification: Performance of sort global known variables: time 5.31e-07/0.2298, allocations: 3.938 kB / 0.6536 GB, free: 13.75 MB / 0.4981 GB
Notification: Performance of remove unused functions: time 0.0006833/0.2305, allocations: 148 kB / 0.6537 GB, free: 13.6 MB / 0.4981 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 9
 * 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 (37):
 * Single equations (assignments): 37
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (not torn): 0
 * Torn equation systems: 0
 * Mixed (continuous/discrete) equation systems: 0
Notification: Performance of Backend phase and start with SimCode phase: time 0.00141/0.2319, allocations: 1.287 MB / 0.655 GB, free: 12.26 MB / 0.4981 GB
Notification: Performance of simCode: created initialization part: time 0.001794/0.2337, allocations: 0.8759 MB / 0.6558 GB, free: 11.39 MB / 0.4981 GB
Notification: Performance of simCode: created event and clocks part: time 5.4e-06/0.2337, allocations: 4.188 kB / 0.6559 GB, free: 11.38 MB / 0.4981 GB
Notification: Performance of simCode: created simulation system equations: time 0.0004569/0.2342, allocations: 251.7 kB / 0.6561 GB, free: 11.14 MB / 0.4981 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0005411/0.2347, allocations: 41.69 kB / 0.6561 GB, free: 11.1 MB / 0.4981 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00584/0.2406, allocations: 3.874 MB / 0.6599 GB, free: 7.043 MB / 0.4981 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003593/0.241, allocations: 0.7877 MB / 0.6607 GB, free: 6.23 MB / 0.4981 GB
Notification: Performance of simCode: alias equations: time 0.0005093/0.2415, allocations: 182.8 kB / 0.6609 GB, free: 6.055 MB / 0.4981 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002229/0.2417, allocations: 83.39 kB / 0.6609 GB, free: 5.973 MB / 0.4981 GB
Notification: Performance of SimCode: time 8.82e-07/0.2417, allocations: 3.938 kB / 0.6609 GB, free: 5.969 MB / 0.4981 GB
Notification: Performance of buildModelFMU: Generate the FMI files: time 0.02493/0.2667, allocations: 7.836 MB / 0.6686 GB, free: 14.29 MB / 0.5137 GB
Notification: Performance of buildModelFMU: Generate platform static: time 8.123/8.39, allocations: 3.938 kB / 0.6686 GB, free: 14.29 MB / 0.5137 GB
(rm -f IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesBalanced.Conversion.Examples.ACACConverter.pipe ; mkfifo IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesBalanced.Conversion.Examples.ACACConverter.pipe ; head -c 1048576 < IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesBalanced.Conversion.Examples.ACACConverter.pipe >> ../files/IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesBalanced.Conversion.Examples.ACACConverter.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator  --tempDir=temp_IBPSA_latest_IBPSA_Electrical_AC_ThreePhasesBalanced_Conversion_Examples_ACACConverter_fmu --startTime=0 --stopTime=1 --timeout=50 --tolerance=1e-06 IBPSA_latest_IBPSA_Electrical_AC_ThreePhasesBalanced_Conversion_Examples_ACACConverter.fmu > IBPSA_latest_IBPSA.Electrical.AC.ThreePhasesBalanced.Conversion.Examples.ACACConverter.pipe 2>&1)