Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas.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/ModelicaTest 3.2.3+maint.om/package.mo", uses=false) Using package ModelicaTest with version 3.2.3 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.3+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 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(ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|volume.medium.T|volume.medium.X.1.|volume.medium.X.2.|volume.medium.X.3.|volume.medium.X.4.|volume.medium.X.5.|volume.medium.X.6.|volume.medium.p",fileNamePrefix="ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas") translateModel(ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas,tolerance=1e-06,outputFormat="mat",numberOfIntervals=5000,variableFilter="time|volume.medium.T|volume.medium.X.1.|volume.medium.X.2.|volume.medium.X.3.|volume.medium.X.4.|volume.medium.X.5.|volume.medium.X.6.|volume.medium.p",fileNamePrefix="ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008301/0.00083, allocations: 94.39 kB / 16.33 MB, free: 5.945 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00089/0.00089, allocations: 187.8 kB / 17.22 MB, free: 5.879 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/package.mo): time 1.497/1.497, allocations: 205.4 MB / 223.4 MB, free: 13.16 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest 3.2.3+maint.om/package.mo): time 0.2192/0.2192, allocations: 43.57 MB / 315.2 MB, free: 0.5508 MB / 254.1 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 0.0005527/0.0005529, allocations: 12.7 kB / 384.6 MB, free: 57.06 MB / 318.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1307/0.1313, allocations: 58.86 MB / 443.4 MB, free: 5.766 MB / 318.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas): time 0.4777/0.6091, allocations: 167 MB / 0.5961 GB, free: 3.172 MB / 414.1 MB Notification: Performance of NFInst.instExpressions: time 0.00901/0.6181, allocations: 6.616 MB / 0.6026 GB, free: 13.81 MB / 430.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.001114/0.6193, allocations: 27.41 kB / 0.6026 GB, free: 13.8 MB / 430.1 MB Notification: Performance of NFTyping.typeComponents: time 0.001027/0.6203, allocations: 312.6 kB / 0.6029 GB, free: 13.54 MB / 430.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Fluid/Sources.mo:788:36-789:54:writable] Warning: 'each' used when modifying non-array element m_flow. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Fluid/Sources.mo:786:36-787:54:writable] Warning: 'each' used when modifying non-array element m_flow. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Fluid/Sources.mo:734:36-735:54:writable] Warning: 'each' used when modifying non-array element m_flow. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 3.2.3+maint.om/Fluid/Sources.mo:732:36-733:54:writable] Warning: 'each' used when modifying non-array element m_flow. Notification: Performance of NFTyping.typeBindings: time 0.004716/0.625, allocations: 1.621 MB / 0.6045 GB, free: 12.34 MB / 430.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003705/0.6287, allocations: 1.25 MB / 0.6057 GB, free: 11.48 MB / 430.1 MB Notification: Performance of NFFlatten.flatten: time 0.003148/0.6319, allocations: 2.649 MB / 0.6083 GB, free: 9.93 MB / 430.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001039/0.633, allocations: 0.6223 MB / 0.6089 GB, free: 9.516 MB / 430.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.005438/0.6384, allocations: 1.731 MB / 0.6106 GB, free: 7.781 MB / 430.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.003303/0.6417, allocations: 1.698 MB / 0.6122 GB, free: 6.082 MB / 430.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0001925/0.6419, allocations: 56 kB / 0.6123 GB, free: 6.027 MB / 430.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.003303/0.6452, allocations: 1.455 MB / 0.6137 GB, free: 4.57 MB / 430.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0006988/0.646, allocations: 0.6781 MB / 0.6144 GB, free: 3.891 MB / 430.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0004276/0.6464, allocations: 285.1 kB / 0.6146 GB, free: 3.605 MB / 430.1 MB Notification: Performance of NFConvertDAE.convert: time 0.00232/0.6487, allocations: 2.046 MB / 0.6166 GB, free: 1.555 MB / 430.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.979e-06/0.6487, allocations: 7.938 kB / 0.6167 GB, free: 1.547 MB / 430.1 MB Notification: Performance of FrontEnd: time 2.184e-06/0.6487, allocations: 0 / 0.6167 GB, free: 1.547 MB / 430.1 MB Notification: Performance of Transformations before backend: time 1.313e-05/0.6488, allocations: 0 / 0.6167 GB, free: 1.547 MB / 430.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 276 * Number of variables: 276 Notification: Performance of Generate backend data structure: time 0.002776/0.6515, allocations: 1.423 MB / 0.618 GB, free: 76 kB / 430.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.909e-05/0.6516, allocations: 12.02 kB / 0.6181 GB, free: 64 kB / 430.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001292/0.6529, allocations: 310.2 kB / 0.6184 GB, free: 15.76 MB / 446.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.00112/0.654, allocations: 0.7263 MB / 0.6191 GB, free: 14.99 MB / 446.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001278/0.6542, allocations: 137.4 kB / 0.6192 GB, free: 14.84 MB / 446.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001772/0.6544, allocations: 115.9 kB / 0.6193 GB, free: 14.73 MB / 446.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002716/0.6571, allocations: 1.834 MB / 0.6211 GB, free: 12.83 MB / 446.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 3.224e-05/0.6571, allocations: 7.906 kB / 0.6211 GB, free: 12.82 MB / 446.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001308/0.6573, allocations: 40 kB / 0.6211 GB, free: 12.78 MB / 446.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.000102/0.6574, allocations: 93.95 kB / 0.6212 GB, free: 12.69 MB / 446.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002528/0.6599, allocations: 1.706 MB / 0.6229 GB, free: 10.98 MB / 446.1 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 0.008724/0.6686, allocations: 6.944 MB / 0.6297 GB, free: 3.559 MB / 446.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.001244/0.6699, allocations: 0.8497 MB / 0.6305 GB, free: 2.703 MB / 446.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0006209/0.6705, allocations: 442.3 kB / 0.6309 GB, free: 2.27 MB / 446.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.000181/0.6707, allocations: 135.6 kB / 0.6311 GB, free: 2.117 MB / 446.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.729e-05/0.6708, allocations: 47.12 kB / 0.6311 GB, free: 2.062 MB / 446.1 MB Notification: Performance of pre-optimization done (n=60): time 2.865e-06/0.6708, allocations: 3.938 kB / 0.6311 GB, free: 2.059 MB / 446.1 MB Notification: Performance of matching and sorting (n=72): time 0.009338/0.6801, allocations: 4.149 MB / 0.6352 GB, free: 13.82 MB / 462.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 7.09e-05/0.6802, allocations: 111.5 kB / 0.6353 GB, free: 13.69 MB / 462.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001347/0.6816, allocations: 1.093 MB / 0.6363 GB, free: 12.57 MB / 462.1 MB Notification: Performance of collectPreVariables (initialization): time 8.277e-05/0.6817, allocations: 45.7 kB / 0.6364 GB, free: 12.52 MB / 462.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0003897/0.6821, allocations: 0.5184 MB / 0.6369 GB, free: 11.99 MB / 462.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0002107/0.6823, allocations: 264.2 kB / 0.6371 GB, free: 11.73 MB / 462.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 6.464e-05/0.6824, allocations: 20 kB / 0.6372 GB, free: 11.71 MB / 462.1 MB Notification: Performance of setup shared object (initialization): time 0.0001331/0.6825, allocations: 349.9 kB / 0.6375 GB, free: 11.36 MB / 462.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.000853/0.6834, allocations: 0.5719 MB / 0.638 GB, free: 10.79 MB / 462.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001028/0.6844, allocations: 0.8642 MB / 0.6389 GB, free: 9.805 MB / 462.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.0009834/0.6854, allocations: 0.6822 MB / 0.6396 GB, free: 9.125 MB / 462.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.14e-06/0.6854, allocations: 4 kB / 0.6396 GB, free: 9.121 MB / 462.1 MB Notification: Performance of matching and sorting (n=125) (initialization): time 0.003109/0.6885, allocations: 1.984 MB / 0.6415 GB, free: 7.125 MB / 462.1 MB Notification: Performance of prepare postOptimizeDAE: time 2.49e-05/0.6886, allocations: 11.95 kB / 0.6415 GB, free: 7.113 MB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.473e-05/0.6886, allocations: 8 kB / 0.6415 GB, free: 7.105 MB / 462.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.004362/0.6929, allocations: 1.379 MB / 0.6429 GB, free: 5.723 MB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005692/0.6935, allocations: 143.8 kB / 0.643 GB, free: 5.582 MB / 462.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00274/0.6963, allocations: 1.912 MB / 0.6449 GB, free: 3.645 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001049/0.6973, allocations: 111.8 kB / 0.645 GB, free: 3.535 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001261/0.6975, allocations: 67.98 kB / 0.645 GB, free: 3.469 MB / 462.1 MB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 37 * Number of states: 0 () * Number of discrete variables: 4 (volume.regularFlow[1],volume.regularFlow[2],volume.inFlow[2],volume.inFlow[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (82): * Single equations (assignments): 81 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {9 35} Notification: Performance of prepare postOptimizeDAE: time 0.0007619/0.6983, allocations: 393.5 kB / 0.6454 GB, free: 3.074 MB / 462.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.000199/0.6985, allocations: 110.8 kB / 0.6455 GB, free: 2.965 MB / 462.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002471/0.7009, allocations: 1.387 MB / 0.6469 GB, free: 1.566 MB / 462.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 7.744e-06/0.701, allocations: 8.188 kB / 0.6469 GB, free: 1.559 MB / 462.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.109e-05/0.701, allocations: 4 kB / 0.6469 GB, free: 1.555 MB / 462.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 9.047e-06/0.701, allocations: 7.922 kB / 0.6469 GB, free: 1.547 MB / 462.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.003927/0.7049, allocations: 2.672 MB / 0.6495 GB, free: 14.81 MB / 478.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 4.428e-06/0.7049, allocations: 0 / 0.6495 GB, free: 14.81 MB / 478.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001699/0.7066, allocations: 327.6 kB / 0.6498 GB, free: 14.49 MB / 478.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001856/0.7068, allocations: 68.78 kB / 0.6499 GB, free: 14.42 MB / 478.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.46e-05/0.7069, allocations: 35.97 kB / 0.6499 GB, free: 14.38 MB / 478.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002419/0.7094, allocations: 2.848 MB / 0.6527 GB, free: 11.27 MB / 478.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.623e-06/0.7094, allocations: 0 / 0.6527 GB, free: 11.27 MB / 478.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002658/0.712, allocations: 1.875 MB / 0.6545 GB, free: 9.375 MB / 478.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0006024/0.7127, allocations: 343.6 kB / 0.6549 GB, free: 9.02 MB / 478.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001676/0.7128, allocations: 27.95 kB / 0.6549 GB, free: 8.992 MB / 478.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00081/0.7136, allocations: 83.84 kB / 0.655 GB, free: 8.91 MB / 478.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001364/0.7138, allocations: 72.5 kB / 0.655 GB, free: 8.836 MB / 478.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001074/0.7139, allocations: 59.95 kB / 0.6551 GB, free: 8.777 MB / 478.1 MB Notification: Performance of sorting global known variables: time 0.001081/0.715, allocations: 0.7852 MB / 0.6559 GB, free: 7.98 MB / 478.1 MB Notification: Performance of sort global known variables: time 1.81e-07/0.715, allocations: 3.938 kB / 0.6559 GB, free: 7.977 MB / 478.1 MB Notification: Performance of remove unused functions: time 0.001514/0.7165, allocations: 0.5194 MB / 0.6564 GB, free: 7.457 MB / 478.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 8 (volume.medium.p,volume.medium.Xi[1],volume.medium.Xi[2],volume.medium.Xi[3],volume.medium.Xi[4],volume.medium.Xi[5],volume.medium.Xi[6],volume.medium.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 (78): * Single equations (assignments): 76 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 1 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 1 {1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(1,100.0%) 1} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.001988/0.7185, allocations: 0.6803 MB / 0.657 GB, free: 6.773 MB / 478.1 MB Notification: Performance of simCode: created initialization part: time 0.002537/0.7211, allocations: 1.455 MB / 0.6584 GB, free: 5.32 MB / 478.1 MB Notification: Performance of simCode: created event and clocks part: time 5.059e-06/0.7211, allocations: 4.656 kB / 0.6585 GB, free: 5.316 MB / 478.1 MB Notification: Performance of simCode: created simulation system equations: time 0.001457/0.7225, allocations: 0.834 MB / 0.6593 GB, free: 4.469 MB / 478.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00284/0.7254, allocations: 0.7307 MB / 0.66 GB, free: 3.738 MB / 478.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.005977/0.7314, allocations: 3.442 MB / 0.6633 GB, free: 268 kB / 478.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001062/0.7325, allocations: 1.172 MB / 0.6645 GB, free: 15.06 MB / 494.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004056/0.7329, allocations: 111.4 kB / 0.6646 GB, free: 14.95 MB / 494.1 MB Notification: Performance of SimCode: time 2.8e-07/0.7329, allocations: 0 / 0.6646 GB, free: 14.95 MB / 494.1 MB Notification: Performance of Templates: time 0.05055/0.7834, allocations: 32.21 MB / 0.6961 GB, free: 14.72 MB / 0.5137 GB make -j1 -f ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas.makefile make -j1 -f ModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGas.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"." -I"." -I"/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/build/include/omc/c/sundials" -DMEASURETIME_PROFILEBLOCKS -DUSE_LOGGER -c -o OMCppModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasCalcHelperMain.o OMCppModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasCalcHelperMain.cpp clang: error: no such file or directory: 'NOTFOUND' make: *** [: OMCppModelicaTest_3.2.3_ModelicaTest.Media.TestsWithFluid.MediaTestModels.IdealGases.SimpleNaturalGasCalcHelperMain.o] Error 1