Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_2.0.0_OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_Test.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo", uses=false) 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/Modelica 3.2.3+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/OpenIPSL 2.0.0/package.mo", uses=false) Using package OpenIPSL with version 2.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 2.0.0/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 Modelica with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+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) Using package Modelica_Synchronous with version 0.93.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo) Running command: translateModel(OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_Test,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_2.0.0_OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_Test") translateModel(OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_Test,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_2.0.0_OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_Test") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica_Synchronous 0.93.0/package.mo): time 0.08159/0.08159, allocations: 12.19 MB / 27.96 MB, free: 1.406 MB / 19.64 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001066/0.001066, allocations: 111.5 kB / 31.47 MB, free: 4.695 MB / 26.18 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.299/1.299, allocations: 205.1 MB / 240 MB, free: 10.98 MB / 206.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001222/0.001222, allocations: 192.5 kB / 290.1 MB, free: 15.9 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 2.0.0/package.mo): time 0.4493/0.4493, allocations: 78.51 MB / 418.6 MB, free: 31.79 MB / 318.1 MB Notification: Modelica_Synchronous 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: 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: OpenIPSL 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: Performance of FrontEnd - loaded program: time 0.002385/0.002385, allocations: 132.7 kB / 498.9 MB, free: 0.6484 MB / 366.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.331/0.3334, allocations: 68.02 MB / 0.5536 GB, free: 37.68 MB / 414.1 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_Test): time 0.003406/0.3368, allocations: 3.656 MB / 0.5572 GB, free: 35.04 MB / 414.1 MB Notification: Performance of NFInst.instExpressions: time 0.001264/0.3381, allocations: 1.043 MB / 0.5582 GB, free: 34.28 MB / 414.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001476/0.3383, allocations: 3.781 kB / 0.5582 GB, free: 34.28 MB / 414.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0002318/0.3385, allocations: 80.94 kB / 0.5583 GB, free: 34.25 MB / 414.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 2.0.0/Electrical/Branches/PSAT/TwoWindingTransformer.mo:44:3-44:83:writable] Warning: In relation phaseShiftingTransformer.twoWindingTransformer.m <> 1.0, <> on Real numbers is only allowed inside functions. Notification: Performance of NFTyping.typeBindings: time 0.0002604/0.3388, allocations: 139.6 kB / 0.5584 GB, free: 34.15 MB / 414.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.000521/0.3393, allocations: 339.5 kB / 0.5587 GB, free: 33.93 MB / 414.1 MB Notification: Performance of NFFlatten.flatten: time 0.0003211/0.3397, allocations: 0.5715 MB / 0.5593 GB, free: 33.64 MB / 414.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0001834/0.3398, allocations: 132.6 kB / 0.5594 GB, free: 33.58 MB / 414.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0001797/0.34, allocations: 218.7 kB / 0.5596 GB, free: 33.48 MB / 414.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0001998/0.3402, allocations: 253.6 kB / 0.5599 GB, free: 33.36 MB / 414.1 MB Notification: Performance of NFPackage.collectConstants: time 4.775e-05/0.3403, allocations: 31.09 kB / 0.5599 GB, free: 33.36 MB / 414.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0001486/0.3404, allocations: 77.53 kB / 0.56 GB, free: 33.34 MB / 414.1 MB Notification: Performance of NFScalarize.scalarize: time 5.939e-05/0.3405, allocations: 102.6 kB / 0.5601 GB, free: 33.27 MB / 414.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0001758/0.3407, allocations: 239.2 kB / 0.5603 GB, free: 33.12 MB / 414.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0003389/0.341, allocations: 0.5229 MB / 0.5608 GB, free: 32.93 MB / 414.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.468e-06/0.3411, allocations: 0 / 0.5608 GB, free: 32.93 MB / 414.1 MB Notification: Performance of FrontEnd: time 8.01e-07/0.3411, allocations: 0 / 0.5608 GB, free: 32.93 MB / 414.1 MB Notification: Performance of Transformations before backend: time 6.382e-06/0.3411, allocations: 0 / 0.5608 GB, free: 32.93 MB / 414.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 71 * Number of variables: 71 Notification: Performance of Generate backend data structure: time 0.001186/0.3423, allocations: 0.8331 MB / 0.5616 GB, free: 32.31 MB / 414.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.463e-05/0.3423, allocations: 19.73 kB / 0.5616 GB, free: 32.3 MB / 414.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0008816/0.3432, allocations: 174.9 kB / 0.5618 GB, free: 32.25 MB / 414.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0003739/0.3436, allocations: 391.9 kB / 0.5622 GB, free: 31.94 MB / 414.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.402e-05/0.3437, allocations: 66.42 kB / 0.5622 GB, free: 31.89 MB / 414.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 5.607e-05/0.3437, allocations: 25.22 kB / 0.5623 GB, free: 31.88 MB / 414.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0006861/0.3444, allocations: 394.7 kB / 0.5626 GB, free: 31.72 MB / 414.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.056e-05/0.3444, allocations: 0 / 0.5626 GB, free: 31.72 MB / 414.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 3.515e-05/0.3445, allocations: 10.78 kB / 0.5626 GB, free: 31.71 MB / 414.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.404e-06/0.3445, allocations: 8.406 kB / 0.5627 GB, free: 31.71 MB / 414.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0005988/0.3451, allocations: 325.2 kB / 0.563 GB, free: 31.6 MB / 414.1 MB 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 0.002174/0.3473, allocations: 1.859 MB / 0.5648 GB, free: 30.3 MB / 414.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.000836/0.3481, allocations: 0.8227 MB / 0.5656 GB, free: 29.57 MB / 414.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003881/0.3485, allocations: 187.8 kB / 0.5658 GB, free: 29.5 MB / 414.1 MB Notification: Performance of preOpt evalFunc (simulation): time 3.435e-05/0.3486, allocations: 10.56 kB / 0.5658 GB, free: 29.5 MB / 414.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.761e-05/0.3486, allocations: 30.56 kB / 0.5658 GB, free: 29.46 MB / 414.1 MB Notification: Performance of pre-optimization done (n=24): time 1.593e-06/0.3486, allocations: 3.031 kB / 0.5658 GB, free: 29.46 MB / 414.1 MB Notification: Performance of matching and sorting (n=24): time 0.004108/0.3527, allocations: 1.245 MB / 0.567 GB, free: 29.05 MB / 414.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 3.166e-05/0.3528, allocations: 55.84 kB / 0.5671 GB, free: 28.99 MB / 414.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0003639/0.3531, allocations: 432.7 kB / 0.5675 GB, free: 28.78 MB / 414.1 MB Notification: Performance of collectPreVariables (initialization): time 2.536e-05/0.3532, allocations: 33.7 kB / 0.5675 GB, free: 28.74 MB / 414.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0001225/0.3533, allocations: 257 kB / 0.5678 GB, free: 28.53 MB / 414.1 MB Notification: Performance of collectInitialBindings (initialization): time 5.938e-05/0.3534, allocations: 84.23 kB / 0.5678 GB, free: 28.46 MB / 414.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001086/0.3535, allocations: 65.53 kB / 0.5679 GB, free: 28.43 MB / 414.1 MB Notification: Performance of setup shared object (initialization): time 7.147e-05/0.3536, allocations: 359.5 kB / 0.5682 GB, free: 28.09 MB / 414.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003472/0.3539, allocations: 185.9 kB / 0.5684 GB, free: 28.02 MB / 414.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0003638/0.3543, allocations: 239.1 kB / 0.5687 GB, free: 27.9 MB / 414.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.004187/0.3585, allocations: 1.289 MB / 0.5699 GB, free: 27.53 MB / 414.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.046e-06/0.3585, allocations: 0 / 0.5699 GB, free: 27.53 MB / 414.1 MB Notification: Performance of matching and sorting (n=39) (initialization): time 0.002081/0.3606, allocations: 0.8374 MB / 0.5707 GB, free: 27.25 MB / 414.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.813e-05/0.3606, allocations: 5.531 kB / 0.5707 GB, free: 27.25 MB / 414.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 7.894e-06/0.3606, allocations: 6.688 kB / 0.5707 GB, free: 27.24 MB / 414.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001963/0.3626, allocations: 0.5652 MB / 0.5713 GB, free: 27.12 MB / 414.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0007702/0.3634, allocations: 139.8 kB / 0.5714 GB, free: 27.12 MB / 414.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006013/0.3694, allocations: 2.977 MB / 0.5743 GB, free: 25.19 MB / 414.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004064/0.3698, allocations: 42.88 kB / 0.5744 GB, free: 25.17 MB / 414.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.074e-05/0.3699, allocations: 13.47 kB / 0.5744 GB, free: 25.17 MB / 414.1 MB Warning: Assuming fixed start value for the following 2 variables: phaseShiftingTransformer.phaseShifter.pmes:VARIABLE(start = phaseShiftingTransformer.phaseShifter.pmes0 unit = "1" fixed = true ) "Measured power flow" type: Real phaseShiftingTransformer.phaseShifter.alpha:VARIABLE(start = phaseShiftingTransformer.phaseShifter.alpha0 unit = "rad" fixed = true ) "Shifting angle" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 5 * 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 (30): * Single equations (assignments): 29 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * 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 {(5,5)} Notification: Performance of prepare postOptimizeDAE: time 0.0002424/0.3701, allocations: 170.7 kB / 0.5745 GB, free: 25.02 MB / 414.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001106/0.3702, allocations: 42.53 kB / 0.5746 GB, free: 24.99 MB / 414.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002318/0.3726, allocations: 0.7683 MB / 0.5753 GB, free: 24.74 MB / 414.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.478e-06/0.3726, allocations: 6.844 kB / 0.5753 GB, free: 24.74 MB / 414.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.864e-06/0.3726, allocations: 4 kB / 0.5753 GB, free: 24.73 MB / 414.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.021e-06/0.3726, allocations: 6.531 kB / 0.5754 GB, free: 24.73 MB / 414.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003128/0.3757, allocations: 1.487 MB / 0.5768 GB, free: 23.95 MB / 414.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.126e-06/0.3757, allocations: 0 / 0.5768 GB, free: 23.95 MB / 414.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008891/0.3766, allocations: 128.4 kB / 0.5769 GB, free: 23.93 MB / 414.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.002713/0.3794, allocations: 0.6244 MB / 0.5775 GB, free: 23.82 MB / 414.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 4.377e-05/0.3794, allocations: 14.61 kB / 0.5776 GB, free: 23.81 MB / 414.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.006194/0.3856, allocations: 2.954 MB / 0.5804 GB, free: 21.89 MB / 414.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.683e-06/0.3856, allocations: 4 kB / 0.5804 GB, free: 21.89 MB / 414.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002894/0.3885, allocations: 1.042 MB / 0.5815 GB, free: 21.45 MB / 414.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0001408/0.3887, allocations: 118.6 kB / 0.5816 GB, free: 21.33 MB / 414.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.402e-05/0.3888, allocations: 11.31 kB / 0.5816 GB, free: 21.32 MB / 414.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0003484/0.3891, allocations: 23.7 kB / 0.5816 GB, free: 21.32 MB / 414.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001844/0.3893, allocations: 57.16 kB / 0.5817 GB, free: 21.31 MB / 414.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.824e-05/0.3894, allocations: 12.31 kB / 0.5817 GB, free: 21.3 MB / 414.1 MB Notification: Performance of sorting global known variables: time 0.0003739/0.3897, allocations: 299.5 kB / 0.582 GB, free: 21.16 MB / 414.1 MB Notification: Performance of sort global known variables: time 3.6e-07/0.3897, allocations: 3.938 kB / 0.582 GB, free: 21.15 MB / 414.1 MB Notification: Performance of remove unused functions: time 0.0005738/0.3903, allocations: 133.8 kB / 0.5821 GB, free: 21.13 MB / 414.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 2 (phaseShiftingTransformer.phaseShifter.pmes,phaseShiftingTransformer.phaseShifter.alpha) * 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 (15): * Single equations (assignments): 14 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * 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 {(5,5)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0001561/0.3905, allocations: 109 kB / 0.5822 GB, free: 21.03 MB / 414.1 MB Notification: Performance of simCode: created initialization part: time 0.002682/0.3932, allocations: 0.7531 MB / 0.5829 GB, free: 20.74 MB / 414.1 MB Notification: Performance of simCode: created event and clocks part: time 2.274e-06/0.3932, allocations: 0 / 0.5829 GB, free: 20.74 MB / 414.1 MB Notification: Performance of simCode: created simulation system equations: time 0.002179/0.3954, allocations: 0.565 MB / 0.5835 GB, free: 20.51 MB / 414.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003983/0.3958, allocations: 36.05 kB / 0.5835 GB, free: 20.49 MB / 414.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003561/0.3994, allocations: 1.214 MB / 0.5847 GB, free: 19.75 MB / 414.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0003228/0.3997, allocations: 0.8162 MB / 0.5855 GB, free: 19.05 MB / 414.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000104/0.3998, allocations: 32.81 kB / 0.5855 GB, free: 19.04 MB / 414.1 MB Notification: Performance of SimCode: time 2.41e-07/0.3998, allocations: 1 kB / 0.5855 GB, free: 19.04 MB / 414.1 MB Notification: Performance of Templates: time 0.01115/0.411, allocations: 7.189 MB / 0.5926 GB, free: 15.89 MB / 414.1 MB make -j1 -f OpenIPSL_2.0.0_OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_Test.makefile make -j1 -f OpenIPSL_2.0.0_OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_Test.makefile clang++ -std=c++14 NOTFOUND -Winvalid-pch -O2 -g -DNDEBUG -fPIC -std=c++11 -DBOOST_ALL_DYN_LINK -DUSE_DGESV -DUSE_LOGGER -DOMC_BUILD -DUSE_THREAD -DSUNDIALS_MAJOR_VERSION=5 -DSUNDIALS_MINOR_VERSION=4 -DPMC_USE_SUNDIALS -I"." -I"/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/bin/../include/omc/cpp/" -I. -I"." -I"." -I"/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/include/omc/sundials" -DMEASURETIME_PROFILEBLOCKS -DUSE_LOGGER -c -o OMCppOpenIPSL_2.0.0_OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_TestCalcHelperMain.o OMCppOpenIPSL_2.0.0_OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_TestCalcHelperMain.cpp clang: error: no such file or directory: 'NOTFOUND' make: *** [: OMCppOpenIPSL_2.0.0_OpenIPSL.Tests.Branches.PSAT.PhaseShiftingTransformer_TestCalcHelperMain.o] Error 1