Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.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/BuildSysPro 3.5.0-master/package.mo", uses=false) Using package BuildSysPro with version 3.5.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.5.0-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: translateModel(BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised") translateModel(BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.0008891/0.0008892, allocations: 102.1 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 0.001021/0.001021, allocations: 174.7 kB / 16.58 MB, free: 6.402 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.513/1.513, allocations: 223.2 MB / 240.6 MB, free: 5.363 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.5.0-master/package.mo): time 1.054/1.054, allocations: 143.4 MB / 435.1 MB, free: 13.67 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0004011/0.0004014, allocations: 8 kB / 0.5166 GB, free: 11.29 MB / 430.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2227/0.2231, allocations: 83.41 MB / 0.5981 GB, free: 7.812 MB / 0.4981 GB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised): time 0.6842/0.9074, allocations: 146.7 MB / 0.7414 GB, free: 6.855 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.005629/0.9131, allocations: 3.374 MB / 0.7447 GB, free: 4.477 MB / 0.5606 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000539/0.9136, allocations: 12.34 kB / 0.7447 GB, free: 4.469 MB / 0.5606 GB Notification: Performance of NFTyping.typeComponents: time 0.0005874/0.9142, allocations: 114.4 kB / 0.7448 GB, free: 4.402 MB / 0.5606 GB Notification: Performance of NFTyping.typeBindings: time 0.001443/0.9157, allocations: 397.1 kB / 0.7452 GB, free: 4.191 MB / 0.5606 GB Notification: Performance of NFTyping.typeClassSections: time 0.001472/0.9172, allocations: 371.8 kB / 0.7455 GB, free: 4.023 MB / 0.5606 GB Notification: Performance of NFFlatten.flatten: time 0.003653/0.9209, allocations: 3 MB / 0.7485 GB, free: 2.223 MB / 0.5606 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001255/0.9221, allocations: 0.6841 MB / 0.7491 GB, free: 1.539 MB / 0.5606 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001848/0.924, allocations: 0.8714 MB / 0.75 GB, free: 0.6641 MB / 0.5606 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0009899/0.925, allocations: 0.704 MB / 0.7507 GB, free: 15.96 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 8.38e-05/0.9251, allocations: 36 kB / 0.7507 GB, free: 15.92 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.001399/0.9265, allocations: 0.5574 MB / 0.7512 GB, free: 15.36 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.0002979/0.9268, allocations: 282.9 kB / 0.7515 GB, free: 15.09 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.0002905/0.9271, allocations: 229.1 kB / 0.7517 GB, free: 14.86 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.001234/0.9283, allocations: 1.068 MB / 0.7528 GB, free: 13.79 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 6.252e-06/0.9284, allocations: 0 / 0.7528 GB, free: 13.79 MB / 0.5762 GB Notification: Performance of FrontEnd: time 1.914e-06/0.9284, allocations: 0 / 0.7528 GB, free: 13.79 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 1.192e-05/0.9284, allocations: 0 / 0.7528 GB, free: 13.79 MB / 0.5762 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 125 * Number of variables: 125 Notification: Performance of Generate backend data structure: time 0.002073/0.9305, allocations: 1.303 MB / 0.754 GB, free: 12.43 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 3.817e-05/0.9305, allocations: 12.03 kB / 0.7541 GB, free: 12.41 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0007388/0.9313, allocations: 183.3 kB / 0.7542 GB, free: 12.23 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001289/0.9326, allocations: 0.8128 MB / 0.755 GB, free: 11.36 MB / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 4.072e-05/0.9326, allocations: 41 kB / 0.7551 GB, free: 11.32 MB / 0.5762 GB Notification: Performance of preOpt expandDerOperator (simulation): time 8.079e-05/0.9327, allocations: 60 kB / 0.7551 GB, free: 11.27 MB / 0.5762 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0013/0.934, allocations: 0.7965 MB / 0.7559 GB, free: 10.39 MB / 0.5762 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.63e-05/0.934, allocations: 4 kB / 0.7559 GB, free: 10.39 MB / 0.5762 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.242e-05/0.9341, allocations: 20 kB / 0.7559 GB, free: 10.37 MB / 0.5762 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.838e-05/0.9341, allocations: 16 kB / 0.7559 GB, free: 10.36 MB / 0.5762 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009338/0.935, allocations: 0.5423 MB / 0.7565 GB, free: 9.809 MB / 0.5762 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 0.00442/0.9395, allocations: 4.607 MB / 0.761 GB, free: 4.82 MB / 0.5762 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007258/0.9402, allocations: 432.4 kB / 0.7614 GB, free: 4.391 MB / 0.5762 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004014/0.9406, allocations: 248.7 kB / 0.7616 GB, free: 4.145 MB / 0.5762 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0003039/0.9409, allocations: 194.2 kB / 0.7618 GB, free: 3.918 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0005101/0.9415, allocations: 296.3 kB / 0.7621 GB, free: 3.613 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=31): time 1.904e-06/0.9415, allocations: 4 kB / 0.7621 GB, free: 3.609 MB / 0.5762 GB Notification: Performance of matching and sorting (n=31): time 0.003614/0.9451, allocations: 1.341 MB / 0.7634 GB, free: 2.25 MB / 0.5762 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.813e-05/0.9452, allocations: 85.33 kB / 0.7635 GB, free: 2.148 MB / 0.5762 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00132/0.9465, allocations: 1.114 MB / 0.7646 GB, free: 1.016 MB / 0.5762 GB Notification: Performance of collectPreVariables (initialization): time 5.483e-05/0.9466, allocations: 41.64 kB / 0.7646 GB, free: 0.9688 MB / 0.5762 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004147/0.947, allocations: 488.1 kB / 0.7651 GB, free: 496 kB / 0.5762 GB Notification: Performance of collectInitialBindings (initialization): time 9.012e-05/0.9471, allocations: 114.5 kB / 0.7652 GB, free: 380 kB / 0.5762 GB Notification: Performance of simplifyInitialFunctions (initialization): time 2.416e-05/0.9471, allocations: 12 kB / 0.7652 GB, free: 368 kB / 0.5762 GB Notification: Performance of setup shared object (initialization): time 0.0001371/0.9473, allocations: 325.9 kB / 0.7655 GB, free: 36 kB / 0.5762 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003312/0.9476, allocations: 184.7 kB / 0.7657 GB, free: 15.86 MB / 0.5919 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0005931/0.9482, allocations: 0.4979 MB / 0.7662 GB, free: 15.22 MB / 0.5919 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0004468/0.9487, allocations: 297.2 kB / 0.7664 GB, free: 14.93 MB / 0.5919 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.29e-06/0.9487, allocations: 4 kB / 0.7664 GB, free: 14.93 MB / 0.5919 GB Notification: Performance of matching and sorting (n=54) (initialization): time 0.001975/0.9507, allocations: 0.9866 MB / 0.7674 GB, free: 13.92 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001864/0.9509, allocations: 270.8 kB / 0.7677 GB, free: 13.57 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.758e-06/0.9509, allocations: 8 kB / 0.7677 GB, free: 13.57 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.00123/0.9521, allocations: 344.9 kB / 0.768 GB, free: 13.23 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000214/0.9523, allocations: 59.91 kB / 0.7681 GB, free: 13.17 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001015/0.9534, allocations: 1.015 MB / 0.7691 GB, free: 12.13 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006878/0.9541, allocations: 103.4 kB / 0.7692 GB, free: 12.03 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.653e-05/0.9541, allocations: 24 kB / 0.7692 GB, free: 12 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 8.476e-06/0.9541, allocations: 4.625 kB / 0.7692 GB, free: 12 MB / 0.5919 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.001291/0.9554, allocations: 0.7387 MB / 0.7699 GB, free: 11.25 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.883e-06/0.9555, allocations: 5.188 kB / 0.7699 GB, free: 11.25 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0004973/0.956, allocations: 216.7 kB / 0.7701 GB, free: 11.04 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0001904/0.9562, allocations: 63.84 kB / 0.7702 GB, free: 10.97 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.003846/0.96, allocations: 3.115 MB / 0.7732 GB, free: 7.707 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0006605/0.9607, allocations: 95.53 kB / 0.7733 GB, free: 7.613 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 3.716e-05/0.9607, allocations: 27.94 kB / 0.7733 GB, free: 7.586 MB / 0.5919 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 24 * Number of states: 0 () * Number of discrete variables: 5 ($whenCondition1,$PRE.pulse_p.T_start,pulse_p.T_start,$PRE.pulse_p.count,pulse_p.count) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (34): * Single equations (assignments): 32 * Array equations: 0 * Algorithm blocks: 1 * 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 {1 19} Notification: Performance of prepare postOptimizeDAE: time 0.0005594/0.9613, allocations: 469.3 kB / 0.7738 GB, free: 7.117 MB / 0.5919 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001155/0.9614, allocations: 98.78 kB / 0.7739 GB, free: 7.02 MB / 0.5919 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001239/0.9627, allocations: 0.7256 MB / 0.7746 GB, free: 6.277 MB / 0.5919 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.759e-06/0.9627, allocations: 4 kB / 0.7746 GB, free: 6.273 MB / 0.5919 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.994e-06/0.9627, allocations: 0 / 0.7746 GB, free: 6.273 MB / 0.5919 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 4.609e-06/0.9627, allocations: 0 / 0.7746 GB, free: 6.273 MB / 0.5919 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.002625/0.9653, allocations: 1.622 MB / 0.7762 GB, free: 4.57 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.797e-06/0.9654, allocations: 0 / 0.7762 GB, free: 4.57 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0001293/0.9655, allocations: 40.12 kB / 0.7762 GB, free: 4.531 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0004369/0.9659, allocations: 220.4 kB / 0.7764 GB, free: 4.312 MB / 0.5919 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.686e-05/0.966, allocations: 12 kB / 0.7764 GB, free: 4.301 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.000883/0.9669, allocations: 0.9892 MB / 0.7774 GB, free: 3.285 MB / 0.5919 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 2.254e-06/0.9669, allocations: 0 / 0.7774 GB, free: 3.285 MB / 0.5919 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001182/0.9681, allocations: 0.8451 MB / 0.7782 GB, free: 2.402 MB / 0.5919 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0003002/0.9684, allocations: 223.8 kB / 0.7784 GB, free: 2.164 MB / 0.5919 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001152/0.9685, allocations: 11.98 kB / 0.7784 GB, free: 2.152 MB / 0.5919 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0004545/0.969, allocations: 55.86 kB / 0.7785 GB, free: 2.098 MB / 0.5919 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 8.054e-05/0.9691, allocations: 27.95 kB / 0.7785 GB, free: 2.07 MB / 0.5919 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.573e-05/0.9691, allocations: 11.12 kB / 0.7785 GB, free: 2.062 MB / 0.5919 GB Notification: Performance of sorting global known variables: time 0.00098/0.9701, allocations: 0.7916 MB / 0.7793 GB, free: 1.262 MB / 0.5919 GB Notification: Performance of sort global known variables: time 1.7e-07/0.9701, allocations: 0 / 0.7793 GB, free: 1.262 MB / 0.5919 GB Notification: Performance of remove unused functions: time 0.001272/0.9714, allocations: 451.5 kB / 0.7797 GB, free: 0.8203 MB / 0.5919 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 8 * Number of states: 0 () * Number of discrete variables: 3 ($whenCondition1,pulse_p.T_start,pulse_p.count) * Number of discrete states: 1 (pulse_p.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (12): * Single equations (assignments): 9 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 2 * 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 {1 19} Notification: Performance of Backend phase and start with SimCode phase: time 0.0004035/0.9718, allocations: 168.1 kB / 0.7799 GB, free: 0.6562 MB / 0.5919 GB Notification: Performance of simCode: created initialization part: time 0.001834/0.9736, allocations: 1.063 MB / 0.7809 GB, free: 15.56 MB / 0.6075 GB Notification: Performance of simCode: created event and clocks part: time 3.607e-06/0.9736, allocations: 4.062 kB / 0.7809 GB, free: 15.55 MB / 0.6075 GB Notification: Performance of simCode: created simulation system equations: time 0.0004435/0.9741, allocations: 218.6 kB / 0.7812 GB, free: 15.34 MB / 0.6075 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001819/0.9759, allocations: 478.1 kB / 0.7816 GB, free: 14.89 MB / 0.6075 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003024/0.979, allocations: 2.039 MB / 0.7836 GB, free: 12.79 MB / 0.6075 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008239/0.9798, allocations: 1.181 MB / 0.7848 GB, free: 11.58 MB / 0.6075 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001428/0.9799, allocations: 63.44 kB / 0.7848 GB, free: 11.52 MB / 0.6075 GB Notification: Performance of SimCode: time 9.92e-07/0.98, allocations: 0 / 0.7848 GB, free: 11.52 MB / 0.6075 GB Notification: Performance of Templates: time 0.02929/1.009, allocations: 20.21 MB / 0.8045 GB, free: 7.426 MB / 0.6231 GB make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.makefile make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimised.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 OMCppBuildSysPro_BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimisedCalcHelperMain.o OMCppBuildSysPro_BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimisedCalcHelperMain.cpp clang: error: no such file or directory: 'NOTFOUND' make: *** [: OMCppBuildSysPro_BuildSysPro.IBPSA.Fluid.Examples.Performance.PressureDrop.SeriesDpOptimisedCalcHelperMain.o] Error 1