Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr Buildings_9_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube.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/Buildings 9.1.2-maint.9.1.x/package.mo", uses=false) Using package Buildings with version 9.1.2 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.2-maint.9.1.x/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: translateModel(Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|realExpression.y|Rb_ref.y",fileNamePrefix="Buildings_9_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube") translateModel(Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|realExpression.y|Rb_ref.y",fileNamePrefix="Buildings_9_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008877/0.0008877, allocations: 102.6 kB / 15.71 MB, free: 460 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001039/0.001039, allocations: 172.8 kB / 16.58 MB, free: 6.398 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.509/1.509, allocations: 223.3 MB / 240.6 MB, free: 5.398 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 9.1.2-maint.9.1.x/package.mo): time 2.671/2.671, allocations: 390.4 MB / 0.6662 GB, free: 2.844 MB / 0.5137 GB Notification: Performance of FrontEnd - loaded program: time 0.0004042/0.0004044, allocations: 8 kB / 0.8155 GB, free: 14.11 MB / 0.67 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.932/0.9324, allocations: 142.3 MB / 0.9545 GB, free: 8.34 MB / 0.7169 GB Notification: Performance of NFInst.instantiate(Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube): time 0.06878/1.001, allocations: 60.33 MB / 1.013 GB, free: 3.762 MB / 0.7637 GB Notification: Performance of NFInst.instExpressions: time 0.0278/1.029, allocations: 15.52 MB / 1.029 GB, free: 4.223 MB / 0.7794 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004739/1.034, allocations: 59.62 kB / 1.029 GB, free: 4.164 MB / 0.7794 GB Notification: Performance of NFTyping.typeComponents: time 0.004288/1.038, allocations: 0.9013 MB / 1.029 GB, free: 3.258 MB / 0.7794 GB Notification: Performance of NFTyping.typeBindings: time 0.008952/1.047, allocations: 1.903 MB / 1.031 GB, free: 1.348 MB / 0.7794 GB Notification: Performance of NFTyping.typeClassSections: time 0.008701/1.056, allocations: 2.173 MB / 1.033 GB, free: 15.2 MB / 0.795 GB Notification: Performance of NFFlatten.flatten: time 0.008935/1.065, allocations: 4.889 MB / 1.038 GB, free: 10.3 MB / 0.795 GB Notification: Performance of NFFlatten.resolveConnections: time 0.003658/1.069, allocations: 1.069 MB / 1.039 GB, free: 9.207 MB / 0.795 GB Notification: Performance of NFEvalConstants.evaluate: time 0.005314/1.074, allocations: 1.307 MB / 1.041 GB, free: 7.895 MB / 0.795 GB Notification: Performance of NFSimplifyModel.simplify: time 0.003614/1.078, allocations: 1.186 MB / 1.042 GB, free: 6.703 MB / 0.795 GB Notification: Performance of NFPackage.collectConstants: time 0.0007616/1.078, allocations: 80 kB / 1.042 GB, free: 6.625 MB / 0.795 GB Notification: Performance of NFFlatten.collectFunctions: time 0.007084/1.086, allocations: 2.028 MB / 1.044 GB, free: 4.594 MB / 0.795 GB Notification: Performance of NFScalarize.scalarize: time 0.001029/1.087, allocations: 358.6 kB / 1.044 GB, free: 4.242 MB / 0.795 GB Notification: Performance of NFVerifyModel.verify: time 0.001362/1.088, allocations: 404.7 kB / 1.044 GB, free: 3.84 MB / 0.795 GB Notification: Performance of NFConvertDAE.convert: time 0.006509/1.094, allocations: 3.253 MB / 1.048 GB, free: 0.5781 MB / 0.795 GB Notification: Performance of FrontEnd - DAE generated: time 8.375e-06/1.095, allocations: 0 / 1.048 GB, free: 0.5781 MB / 0.795 GB Notification: Performance of FrontEnd: time 2.826e-06/1.095, allocations: 0 / 1.048 GB, free: 0.5781 MB / 0.795 GB Notification: Performance of Transformations before backend: time 0.0001334/1.095, allocations: 0 / 1.048 GB, free: 0.5781 MB / 0.795 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 264 * Number of variables: 264 Notification: Performance of Generate backend data structure: time 0.006075/1.101, allocations: 2.065 MB / 1.05 GB, free: 14.45 MB / 0.8106 GB Notification: Performance of prepare preOptimizeDAE: time 5.081e-05/1.101, allocations: 12.03 kB / 1.05 GB, free: 14.44 MB / 0.8106 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0009738/1.102, allocations: 213.5 kB / 1.05 GB, free: 14.23 MB / 0.8106 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004009/1.106, allocations: 1.473 MB / 1.051 GB, free: 12.71 MB / 0.8106 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001147/1.106, allocations: 90.02 kB / 1.051 GB, free: 12.62 MB / 0.8106 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0003525/1.106, allocations: 108 kB / 1.052 GB, free: 12.51 MB / 0.8106 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002829/1.109, allocations: 1.1 MB / 1.053 GB, free: 11.35 MB / 0.8106 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.374e-05/1.109, allocations: 3.938 kB / 1.053 GB, free: 11.35 MB / 0.8106 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001442/1.109, allocations: 44 kB / 1.053 GB, free: 11.3 MB / 0.8106 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.61e-05/1.109, allocations: 24 kB / 1.053 GB, free: 11.28 MB / 0.8106 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001845/1.111, allocations: 0.82 MB / 1.053 GB, free: 10.45 MB / 0.8106 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 0.01155/1.123, allocations: 6.815 MB / 1.06 GB, free: 2.941 MB / 0.8106 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001091/1.124, allocations: 0.7402 MB / 1.061 GB, free: 2.156 MB / 0.8106 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0005559/1.125, allocations: 358.6 kB / 1.061 GB, free: 1.805 MB / 0.8106 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001263/1.126, allocations: 1.278 MB / 1.062 GB, free: 256 kB / 0.8106 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.587e-05/1.126, allocations: 39.17 kB / 1.062 GB, free: 208 kB / 0.8106 GB Notification: Performance of pre-optimization done (n=72): time 3.446e-06/1.126, allocations: 7.938 kB / 1.062 GB, free: 200 kB / 0.8106 GB Notification: Performance of matching and sorting (n=72): time 0.002674/1.129, allocations: 1.171 MB / 1.064 GB, free: 14.97 MB / 0.8262 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.698e-05/1.129, allocations: 93.7 kB / 1.064 GB, free: 14.86 MB / 0.8262 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002996/1.132, allocations: 1.489 MB / 1.065 GB, free: 13.37 MB / 0.8262 GB Notification: Performance of collectPreVariables (initialization): time 0.0001263/1.132, allocations: 41.7 kB / 1.065 GB, free: 13.32 MB / 0.8262 GB Notification: Performance of collectInitialEqns (initialization): time 0.0007218/1.133, allocations: 0.7015 MB / 1.066 GB, free: 12.61 MB / 0.8262 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003098/1.133, allocations: 260.2 kB / 1.066 GB, free: 12.35 MB / 0.8262 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.325e-05/1.133, allocations: 20 kB / 1.066 GB, free: 12.33 MB / 0.8262 GB Notification: Performance of setup shared object (initialization): time 0.0001481/1.133, allocations: 345.9 kB / 1.066 GB, free: 11.99 MB / 0.8262 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0005569/1.134, allocations: 269.9 kB / 1.067 GB, free: 11.73 MB / 0.8262 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006815/1.134, allocations: 486.5 kB / 1.067 GB, free: 11.18 MB / 0.8262 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0006826/1.135, allocations: 358.9 kB / 1.068 GB, free: 10.83 MB / 0.8262 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.624e-06/1.135, allocations: 4 kB / 1.068 GB, free: 10.83 MB / 0.8262 GB Notification: Performance of matching and sorting (n=116) (initialization): time 0.002306/1.137, allocations: 1.005 MB / 1.069 GB, free: 9.809 MB / 0.8262 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001601/1.138, allocations: 192.1 kB / 1.069 GB, free: 9.57 MB / 0.8262 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.861e-05/1.138, allocations: 11.94 kB / 1.069 GB, free: 9.559 MB / 0.8262 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0003644/1.138, allocations: 69.69 kB / 1.069 GB, free: 9.484 MB / 0.8262 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006925/1.139, allocations: 191.7 kB / 1.069 GB, free: 9.297 MB / 0.8262 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00277/1.141, allocations: 2.982 MB / 1.072 GB, free: 6.051 MB / 0.8262 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001459/1.143, allocations: 150.9 kB / 1.072 GB, free: 5.902 MB / 0.8262 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001264/1.143, allocations: 39.98 kB / 1.072 GB, free: 5.863 MB / 0.8262 GB Notification: Performance of prepare postOptimizeDAE: time 1.093e-05/1.143, allocations: 5.719 kB / 1.072 GB, free: 5.859 MB / 0.8262 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001593/1.145, allocations: 0.841 MB / 1.073 GB, free: 5.008 MB / 0.8262 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.786e-05/1.145, allocations: 4 kB / 1.073 GB, free: 5.004 MB / 0.8262 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0001626/1.145, allocations: 65.69 kB / 1.073 GB, free: 4.934 MB / 0.8262 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000649/1.146, allocations: 188 kB / 1.073 GB, free: 4.75 MB / 0.8262 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002657/1.148, allocations: 2.957 MB / 1.076 GB, free: 1.523 MB / 0.8262 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001378/1.15, allocations: 139.1 kB / 1.076 GB, free: 1.387 MB / 0.8262 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001023/1.15, allocations: 36 kB / 1.076 GB, free: 1.352 MB / 0.8262 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 15 * 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 (107): * Single equations (assignments): 104 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 1 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 2 {(1,100.0%) 3,(1,100.0%) 3} * Non-linear torn systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.00103/1.151, allocations: 456.8 kB / 1.077 GB, free: 0.8945 MB / 0.8262 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0005314/1.151, allocations: 162 kB / 1.077 GB, free: 0.7344 MB / 0.8262 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002186/1.154, allocations: 1.044 MB / 1.078 GB, free: 15.68 MB / 0.8419 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.025e-05/1.154, allocations: 15.95 kB / 1.078 GB, free: 15.67 MB / 0.8419 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 8.916e-06/1.154, allocations: 3.984 kB / 1.078 GB, free: 15.66 MB / 0.8419 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.001115/1.155, allocations: 0.781 MB / 1.079 GB, free: 14.85 MB / 0.8419 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005223/1.16, allocations: 2.687 MB / 1.081 GB, free: 12.01 MB / 0.8419 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 9.789e-06/1.16, allocations: 8.375 kB / 1.081 GB, free: 12 MB / 0.8419 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0005584/1.161, allocations: 135.9 kB / 1.081 GB, free: 11.87 MB / 0.8419 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.000242/1.161, allocations: 81.56 kB / 1.081 GB, free: 11.79 MB / 0.8419 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.093e-05/1.161, allocations: 16 kB / 1.081 GB, free: 11.77 MB / 0.8419 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002582/1.163, allocations: 2.974 MB / 1.084 GB, free: 8.527 MB / 0.8419 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.941e-06/1.163, allocations: 4 kB / 1.084 GB, free: 8.523 MB / 0.8419 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002479/1.166, allocations: 1.393 MB / 1.086 GB, free: 7.066 MB / 0.8419 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001035/1.167, allocations: 386.7 kB / 1.086 GB, free: 6.668 MB / 0.8419 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004715/1.168, allocations: 16.12 kB / 1.086 GB, free: 6.652 MB / 0.8419 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001014/1.169, allocations: 67.8 kB / 1.086 GB, free: 6.586 MB / 0.8419 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001162/1.169, allocations: 64.38 kB / 1.086 GB, free: 6.523 MB / 0.8419 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.104e-05/1.169, allocations: 31.98 kB / 1.086 GB, free: 6.492 MB / 0.8419 GB Notification: Performance of sorting global known variables: time 0.002134/1.171, allocations: 1.049 MB / 1.087 GB, free: 5.449 MB / 0.8419 GB Notification: Performance of sort global known variables: time 2.01e-07/1.171, allocations: 0 / 1.087 GB, free: 5.449 MB / 0.8419 GB Notification: Performance of remove unused functions: time 0.004272/1.175, allocations: 1.073 MB / 1.088 GB, free: 4.375 MB / 0.8419 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 15 * Number of states: 6 (intHex.vol1.dynBal.U,intHex.vol2.dynBal.U,intHex.intResUTub.capFil1.T,intHex.intResUTub.capFil2.T,senTem.T,senTem1.T) * 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 (72): * Single equations (assignments): 63 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 7 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 2 {(1,100.0%) 3,(1,100.0%) 3} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.002691/1.178, allocations: 0.7997 MB / 1.089 GB, free: 3.578 MB / 0.8419 GB Notification: Performance of simCode: created initialization part: time 0.003275/1.181, allocations: 1.689 MB / 1.091 GB, free: 1.828 MB / 0.8419 GB Notification: Performance of simCode: created event and clocks part: time 7.685e-06/1.181, allocations: 4.062 kB / 1.091 GB, free: 1.824 MB / 0.8419 GB Notification: Performance of simCode: created simulation system equations: time 0.0008897/1.182, allocations: 0.5824 MB / 1.091 GB, free: 1.211 MB / 0.8419 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004745/1.187, allocations: 0.8063 MB / 1.092 GB, free: 424 kB / 0.8419 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006164/1.193, allocations: 3.528 MB / 1.096 GB, free: 12.81 MB / 0.8575 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001192/1.194, allocations: 1.266 MB / 1.097 GB, free: 11.52 MB / 0.8575 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004864/1.195, allocations: 131.4 kB / 1.097 GB, free: 11.39 MB / 0.8575 GB Notification: Performance of SimCode: time 1.653e-06/1.195, allocations: 0 / 1.097 GB, free: 11.39 MB / 0.8575 GB Notification: Performance of Templates: time 0.07789/1.273, allocations: 46.53 MB / 1.142 GB, free: 13.12 MB / 0.9044 GB make -j1 -f Buildings_9_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube.makefile make -j1 -f Buildings_9_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTube.makefile clang++ NOTFOUND -Winvalid-pch -O0 -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/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/Resources/C-Sources" -I"." -I"." -I"/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/include/omc/c/sundials" "-I/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/Resources/C-Sources" -DMEASURETIME_PROFILEBLOCKS -DUSE_LOGGER -c -o OMCppBuildings_9_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTubeCalcHelperMain.o OMCppBuildings_9_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTubeCalcHelperMain.cpp clang: error: no such file or directory: 'NOTFOUND' make: *** [: OMCppBuildings_9_Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Examples.InternalHEXOneUTubeCalcHelperMain.o] Error 1