Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.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/IDEAS 3.0.0/package.mo", uses=false)
Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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(IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass")
translateModel(IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008161/0.0008163, allocations: 99.11 kB / 16.02 MB, free: 76 kB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001077/0.001077, allocations: 187.7 kB / 16.92 MB, free: 6.75 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.318/1.318, allocations: 223.3 MB / 241 MB, free: 5.355 MB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.6984/0.6984, allocations: 132.3 MB / 424.4 MB, free: 1.992 MB / 350.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.0003403/0.0003404, allocations: 11.98 kB / 0.5046 GB, free: 3.906 MB / 366.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.453/0.4533, allocations: 81.57 MB / 0.5843 GB, free: 4.039 MB / 430.1 MB
Notification: Performance of NFInst.instantiate(IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass): time 0.1907/0.644, allocations: 172.6 MB / 0.7528 GB, free: 3.289 MB / 0.5762 GB
Notification: Performance of NFInst.instExpressions: time 0.006699/0.6508, allocations: 4.399 MB / 0.7571 GB, free: 14.88 MB / 0.5919 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.0007497/0.6516, allocations: 23.81 kB / 0.7571 GB, free: 14.86 MB / 0.5919 GB
Notification: Performance of NFTyping.typeComponents: time 0.0009136/0.6525, allocations: 306.4 kB / 0.7574 GB, free: 14.55 MB / 0.5919 GB
Notification: Performance of NFTyping.typeBindings: time 0.002866/0.6554, allocations: 1.187 MB / 0.7586 GB, free: 13.36 MB / 0.5919 GB
Notification: Performance of NFTyping.typeClassSections: time 0.001629/0.657, allocations: 0.6205 MB / 0.7592 GB, free: 12.75 MB / 0.5919 GB
Notification: Performance of NFFlatten.flatten: time 0.002265/0.6593, allocations: 2.214 MB / 0.7614 GB, free: 10.53 MB / 0.5919 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.0005839/0.6599, allocations: 456.8 kB / 0.7618 GB, free: 10.08 MB / 0.5919 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.001036/0.661, allocations: 0.5795 MB / 0.7624 GB, free: 9.496 MB / 0.5919 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.0009896/0.662, allocations: 496.3 kB / 0.7628 GB, free: 9.012 MB / 0.5919 GB
Notification: Performance of NFPackage.collectConstants: time 5.513e-05/0.662, allocations: 24 kB / 0.7629 GB, free: 8.988 MB / 0.5919 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.002332/0.6644, allocations: 1.453 MB / 0.7643 GB, free: 7.531 MB / 0.5919 GB
Notification: Performance of NFScalarize.scalarize: time 0.000211/0.6646, allocations: 203.3 kB / 0.7645 GB, free: 7.332 MB / 0.5919 GB
Notification: Performance of NFVerifyModel.verify: time 0.0003047/0.6649, allocations: 332.1 kB / 0.7648 GB, free: 7 MB / 0.5919 GB
Notification: Performance of NFConvertDAE.convert: time 0.001054/0.666, allocations: 0.9197 MB / 0.7657 GB, free: 6.078 MB / 0.5919 GB
Notification: Performance of FrontEnd - DAE generated: time 3.837e-06/0.666, allocations: 8 kB / 0.7657 GB, free: 6.07 MB / 0.5919 GB
Notification: Performance of FrontEnd: time 1.964e-06/0.666, allocations: 0 / 0.7657 GB, free: 6.07 MB / 0.5919 GB
Notification: Performance of Transformations before backend: time 7.845e-06/0.666, allocations: 0 / 0.7657 GB, free: 6.07 MB / 0.5919 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 104
 * Number of variables: 104
Notification: Performance of Generate backend data structure: time 0.001318/0.6673, allocations: 0.8802 MB / 0.7665 GB, free: 5.141 MB / 0.5919 GB
Notification: Performance of prepare preOptimizeDAE: time 3.871e-05/0.6674, allocations: 15.97 kB / 0.7666 GB, free: 5.125 MB / 0.5919 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001/0.6684, allocations: 171 kB / 0.7667 GB, free: 4.957 MB / 0.5919 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.0007166/0.6691, allocations: 0.5284 MB / 0.7672 GB, free: 4.391 MB / 0.5919 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 3.07e-05/0.6691, allocations: 33 kB / 0.7673 GB, free: 4.359 MB / 0.5919 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 7.477e-05/0.6692, allocations: 51.92 kB / 0.7673 GB, free: 4.309 MB / 0.5919 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.000763/0.67, allocations: 470.4 kB / 0.7678 GB, free: 3.844 MB / 0.5919 GB
Notification: Performance of preOpt findStateOrder (simulation): time 1.344e-05/0.67, allocations: 0 / 0.7678 GB, free: 3.844 MB / 0.5919 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 4.211e-05/0.6701, allocations: 16 kB / 0.7678 GB, free: 3.828 MB / 0.5919 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.592e-05/0.6701, allocations: 13 kB / 0.7678 GB, free: 3.816 MB / 0.5919 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0007032/0.6708, allocations: 431.7 kB / 0.7682 GB, free: 3.395 MB / 0.5919 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 0.002334/0.6731, allocations: 2.027 MB / 0.7702 GB, free: 1.188 MB / 0.5919 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.0004504/0.6736, allocations: 279.3 kB / 0.7705 GB, free: 0.9062 MB / 0.5919 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.0002917/0.6739, allocations: 194.6 kB / 0.7706 GB, free: 0.7148 MB / 0.5919 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0002501/0.6742, allocations: 190.2 kB / 0.7708 GB, free: 0.4922 MB / 0.5919 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.195e-05/0.6742, allocations: 38.56 kB / 0.7709 GB, free: 456 kB / 0.5919 GB
Notification: Performance of pre-optimization done (n=30): time 1.493e-06/0.6742, allocations: 0 / 0.7709 GB, free: 456 kB / 0.5919 GB
Notification: Performance of matching and sorting (n=30): time 0.00149/0.6757, allocations: 0.6695 MB / 0.7715 GB, free: 15.75 MB / 0.6075 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.417e-05/0.6758, allocations: 63.34 kB / 0.7716 GB, free: 15.67 MB / 0.6075 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0004364/0.6762, allocations: 442 kB / 0.772 GB, free: 15.23 MB / 0.6075 GB
Notification: Performance of collectPreVariables (initialization): time 3.6e-05/0.6762, allocations: 33.7 kB / 0.772 GB, free: 15.19 MB / 0.6075 GB
Notification: Performance of collectInitialEqns (initialization): time 0.000191/0.6764, allocations: 280.2 kB / 0.7723 GB, free: 14.91 MB / 0.6075 GB
Notification: Performance of collectInitialBindings (initialization): time 8.265e-05/0.6765, allocations: 102.5 kB / 0.7724 GB, free: 14.81 MB / 0.6075 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 4.621e-05/0.6766, allocations: 33.7 kB / 0.7724 GB, free: 14.77 MB / 0.6075 GB
Notification: Performance of setup shared object (initialization): time 0.0001221/0.6767, allocations: 362.8 kB / 0.7728 GB, free: 14.41 MB / 0.6075 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0002436/0.677, allocations: 131.9 kB / 0.7729 GB, free: 14.28 MB / 0.6075 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.0002974/0.6773, allocations: 211.6 kB / 0.7731 GB, free: 14.04 MB / 0.6075 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.0005229/0.6778, allocations: 330.3 kB / 0.7734 GB, free: 13.7 MB / 0.6075 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.408e-06/0.6778, allocations: 4 kB / 0.7734 GB, free: 13.7 MB / 0.6075 GB
Notification: Performance of matching and sorting (n=37) (initialization): time 0.0006521/0.6785, allocations: 421.6 kB / 0.7738 GB, free: 13.28 MB / 0.6075 GB
Notification: Performance of prepare postOptimizeDAE: time 6.99e-05/0.6786, allocations: 133.3 kB / 0.7739 GB, free: 13.13 MB / 0.6075 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.981e-06/0.6786, allocations: 0 / 0.7739 GB, free: 13.13 MB / 0.6075 GB
Notification: Performance of postOpt tearingSystem (initialization): time 1.814e-05/0.6786, allocations: 4 kB / 0.774 GB, free: 13.12 MB / 0.6075 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003148/0.6789, allocations: 71.84 kB / 0.774 GB, free: 13.05 MB / 0.6075 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 9.188e-06/0.6789, allocations: 4 kB / 0.774 GB, free: 13.05 MB / 0.6075 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004762/0.6794, allocations: 65.17 kB / 0.7741 GB, free: 12.99 MB / 0.6075 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.069e-05/0.6795, allocations: 8 kB / 0.7741 GB, free: 12.98 MB / 0.6075 GB
Notification: Performance of prepare postOptimizeDAE: time 6.693e-06/0.6795, allocations: 4 kB / 0.7741 GB, free: 12.98 MB / 0.6075 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.0005719/0.68, allocations: 343.6 kB / 0.7744 GB, free: 12.64 MB / 0.6075 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.348e-06/0.6801, allocations: 4 kB / 0.7744 GB, free: 12.64 MB / 0.6075 GB
Notification: Performance of postOpt tearingSystem (initialization): time 2.614e-06/0.6801, allocations: 0 / 0.7744 GB, free: 12.64 MB / 0.6075 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0002866/0.6804, allocations: 75.97 kB / 0.7745 GB, free: 12.56 MB / 0.6075 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 5.51e-06/0.6804, allocations: 7.984 kB / 0.7745 GB, free: 12.55 MB / 0.6075 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004134/0.6808, allocations: 55.81 kB / 0.7746 GB, free: 12.5 MB / 0.6075 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.593e-05/0.6808, allocations: 19.98 kB / 0.7746 GB, free: 12.48 MB / 0.6075 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 6
 * 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 (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 prepare postOptimizeDAE: time 0.0002504/0.6811, allocations: 281 kB / 0.7749 GB, free: 12.2 MB / 0.6075 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 7.67e-05/0.6812, allocations: 51.38 kB / 0.7749 GB, free: 12.14 MB / 0.6075 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.0007797/0.682, allocations: 432.1 kB / 0.7753 GB, free: 11.71 MB / 0.6075 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 5.791e-06/0.682, allocations: 4 kB / 0.7753 GB, free: 11.71 MB / 0.6075 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 5.751e-06/0.682, allocations: 4 kB / 0.7753 GB, free: 11.7 MB / 0.6075 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.0006469/0.6826, allocations: 453.1 kB / 0.7758 GB, free: 11.23 MB / 0.6075 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001599/0.6842, allocations: 1.141 MB / 0.7769 GB, free: 10.01 MB / 0.6075 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.475e-06/0.6843, allocations: 7.875 kB / 0.7769 GB, free: 10 MB / 0.6075 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002752/0.6845, allocations: 55.97 kB / 0.7769 GB, free: 9.945 MB / 0.6075 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0002176/0.6848, allocations: 60.91 kB / 0.777 GB, free: 9.883 MB / 0.6075 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.431e-05/0.6848, allocations: 12 kB / 0.777 GB, free: 9.871 MB / 0.6075 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001128/0.6859, allocations: 1.437 MB / 0.7784 GB, free: 8.301 MB / 0.6075 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.963e-06/0.686, allocations: 64 / 0.7784 GB, free: 8.301 MB / 0.6075 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001036/0.687, allocations: 0.7201 MB / 0.7791 GB, free: 7.539 MB / 0.6075 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0001727/0.6872, allocations: 168.5 kB / 0.7793 GB, free: 7.355 MB / 0.6075 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.308e-05/0.6872, allocations: 8 kB / 0.7793 GB, free: 7.348 MB / 0.6075 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004016/0.6876, allocations: 43.3 kB / 0.7793 GB, free: 7.309 MB / 0.6075 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 6.949e-05/0.6877, allocations: 31.95 kB / 0.7793 GB, free: 7.277 MB / 0.6075 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.386e-05/0.6878, allocations: 12 kB / 0.7794 GB, free: 7.266 MB / 0.6075 GB
Notification: Performance of sorting global known variables: time 0.0003256/0.6881, allocations: 310.9 kB / 0.7797 GB, free: 6.965 MB / 0.6075 GB
Notification: Performance of sort global known variables: time 1.51e-07/0.6881, allocations: 0 / 0.7797 GB, free: 6.965 MB / 0.6075 GB
Notification: Performance of remove unused functions: time 0.0008414/0.6889, allocations: 307.3 kB / 0.7799 GB, free: 6.664 MB / 0.6075 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 8
 * Number of states: 2 (vol.dynBal.U,vol.dynBal.mXi[1])
 * 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 (28):
 * Single equations (assignments): 27
 * 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): 1 system
   {(1,2,100.0%)}
 * Non-linear torn systems (#iteration vars, #inner vars): 0 systems
Notification: Performance of Backend phase and start with SimCode phase: time 0.0004857/0.6894, allocations: 190.2 kB / 0.7801 GB, free: 6.477 MB / 0.6075 GB
Notification: Performance of simCode: created initialization part: time 0.0009311/0.6904, allocations: 0.4965 MB / 0.7806 GB, free: 5.98 MB / 0.6075 GB
Notification: Performance of simCode: created event and clocks part: time 2.985e-06/0.6904, allocations: 0 / 0.7806 GB, free: 5.98 MB / 0.6075 GB
Notification: Performance of simCode: created simulation system equations: time 0.0004674/0.6909, allocations: 299.4 kB / 0.7809 GB, free: 5.676 MB / 0.6075 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00164/0.6925, allocations: 310.6 kB / 0.7812 GB, free: 5.379 MB / 0.6075 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.001719/0.6942, allocations: 1.384 MB / 0.7825 GB, free: 3.938 MB / 0.6075 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004779/0.6947, allocations: 0.8939 MB / 0.7834 GB, free: 3.016 MB / 0.6075 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001201/0.6949, allocations: 39.44 kB / 0.7835 GB, free: 2.977 MB / 0.6075 GB
Notification: Performance of SimCode: time 2.244e-06/0.6949, allocations: 4 kB / 0.7835 GB, free: 2.973 MB / 0.6075 GB
Notification: Performance of Templates: time 0.01321/0.7081, allocations: 9.646 MB / 0.7929 GB, free: 9.41 MB / 0.6231 GB
make -j1 -f IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.makefile
make -j1 -f IDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMass.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/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/sundials" "-I/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/Resources/C-Sources"    -DMEASURETIME_PROFILEBLOCKS -DUSE_LOGGER  -c -o OMCppIDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMassCalcHelperMain.o OMCppIDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMassCalcHelperMain.cpp
clang: error: no such file or directory: 'NOTFOUND'
make: *** [<builtin>: OMCppIDEAS_IDEAS.Fluid.MixingVolumes.Validation.MixingVolumeSteadyStateMassCalcHelperMain.o] Error 1