/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 18:42:26,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 18:42:26,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 18:42:26,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 18:42:26,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 18:42:26,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 18:42:26,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 18:42:26,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 18:42:26,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 18:42:26,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 18:42:26,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 18:42:26,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 18:42:26,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 18:42:26,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 18:42:26,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 18:42:26,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 18:42:26,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 18:42:26,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 18:42:26,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 18:42:26,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 18:42:26,843 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 18:42:26,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 18:42:26,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 18:42:26,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 18:42:26,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 18:42:26,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-17 18:42:26,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-17 18:42:26,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-17 18:42:26,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-17 18:42:26,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-17 18:42:26,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-17 18:42:26,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-17 18:42:26,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-17 18:42:26,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-17 18:42:26,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-17 18:42:26,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-17 18:42:26,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-17 18:42:26,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-17 18:42:26,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-17 18:42:26,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 18:42:26,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 18:42:26,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 18:42:26,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 18:42:26,873 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 18:42:26,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 18:42:26,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 18:42:26,874 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 18:42:26,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 18:42:26,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 18:42:26,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 18:42:26,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 18:42:26,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 18:42:26,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 18:42:26,874 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 18:42:26,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 18:42:26,875 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 18:42:26,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 18:42:26,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 18:42:26,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 18:42:26,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 18:42:26,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 18:42:26,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 18:42:26,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 18:42:26,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 18:42:26,880 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 18:42:26,880 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 18:42:27,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 18:42:27,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 18:42:27,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 18:42:27,053 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 18:42:27,053 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 18:42:27,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-17 18:42:27,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91276618f/c90bead5c1b74428b974c75334d219e1/FLAGa1c129834 [2022-03-17 18:42:27,484 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 18:42:27,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-17 18:42:27,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91276618f/c90bead5c1b74428b974c75334d219e1/FLAGa1c129834 [2022-03-17 18:42:27,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91276618f/c90bead5c1b74428b974c75334d219e1 [2022-03-17 18:42:27,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 18:42:27,507 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 18:42:27,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 18:42:27,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 18:42:27,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 18:42:27,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:42:27" (1/1) ... [2022-03-17 18:42:27,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517cd8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27, skipping insertion in model container [2022-03-17 18:42:27,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:42:27" (1/1) ... [2022-03-17 18:42:27,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 18:42:27,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 18:42:27,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2022-03-17 18:42:27,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 18:42:27,755 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 18:42:27,764 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2022-03-17 18:42:27,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 18:42:27,812 INFO L208 MainTranslator]: Completed translation [2022-03-17 18:42:27,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27 WrapperNode [2022-03-17 18:42:27,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 18:42:27,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 18:42:27,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 18:42:27,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 18:42:27,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27" (1/1) ... [2022-03-17 18:42:27,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27" (1/1) ... [2022-03-17 18:42:27,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27" (1/1) ... [2022-03-17 18:42:27,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27" (1/1) ... [2022-03-17 18:42:27,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27" (1/1) ... [2022-03-17 18:42:27,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27" (1/1) ... [2022-03-17 18:42:27,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27" (1/1) ... [2022-03-17 18:42:27,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 18:42:27,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 18:42:27,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 18:42:27,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 18:42:27,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27" (1/1) ... [2022-03-17 18:42:27,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 18:42:27,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:42:27,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 18:42:27,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2022-03-17 18:42:27,912 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-17 18:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-17 18:42:27,914 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-17 18:42:27,914 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-17 18:42:27,914 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2022-03-17 18:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-17 18:42:27,915 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 18:42:27,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 18:42:28,048 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 18:42:28,050 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 18:42:28,106 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:42:28,180 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-17 18:42:28,181 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-17 18:42:28,185 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:42:28,208 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-17 18:42:28,209 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-17 18:42:28,221 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:42:28,231 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-17 18:42:28,231 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-17 18:42:28,234 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:42:28,243 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-17 18:42:28,243 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-17 18:42:28,346 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:42:28,365 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-17 18:42:28,365 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-17 18:42:28,395 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-17 18:42:28,406 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-17 18:42:28,406 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-17 18:42:28,444 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 18:42:28,452 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 18:42:28,452 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-17 18:42:28,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:42:28 BoogieIcfgContainer [2022-03-17 18:42:28,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 18:42:28,455 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 18:42:28,455 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 18:42:28,456 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 18:42:28,458 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:42:28" (1/1) ... [2022-03-17 18:42:28,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 06:42:28 BasicIcfg [2022-03-17 18:42:28,522 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 18:42:28,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 18:42:28,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 18:42:28,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 18:42:28,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:42:27" (1/4) ... [2022-03-17 18:42:28,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197725bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:42:28, skipping insertion in model container [2022-03-17 18:42:28,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:42:27" (2/4) ... [2022-03-17 18:42:28,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197725bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:42:28, skipping insertion in model container [2022-03-17 18:42:28,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 06:42:28" (3/4) ... [2022-03-17 18:42:28,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197725bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:42:28, skipping insertion in model container [2022-03-17 18:42:28,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 06:42:28" (4/4) ... [2022-03-17 18:42:28,531 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.cJordan [2022-03-17 18:42:28,535 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 18:42:28,535 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 18:42:28,572 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 18:42:28,576 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-17 18:42:28,577 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 18:42:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 206 states have (on average 1.4271844660194175) internal successors, (294), 224 states have internal predecessors, (294), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2022-03-17 18:42:28,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-17 18:42:28,596 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:28,597 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:28,597 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:28,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:28,601 INFO L85 PathProgramCache]: Analyzing trace with hash 13220813, now seen corresponding path program 1 times [2022-03-17 18:42:28,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:28,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112776678] [2022-03-17 18:42:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:28,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:28,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:28,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:28,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112776678] [2022-03-17 18:42:28,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112776678] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:28,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:28,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 18:42:28,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390958624] [2022-03-17 18:42:28,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:28,936 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 18:42:28,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:28,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 18:42:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 18:42:28,956 INFO L87 Difference]: Start difference. First operand has 295 states, 206 states have (on average 1.4271844660194175) internal successors, (294), 224 states have internal predecessors, (294), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-17 18:42:29,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:29,649 INFO L93 Difference]: Finished difference Result 342 states and 472 transitions. [2022-03-17 18:42:29,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 18:42:29,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-03-17 18:42:29,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:29,659 INFO L225 Difference]: With dead ends: 342 [2022-03-17 18:42:29,659 INFO L226 Difference]: Without dead ends: 326 [2022-03-17 18:42:29,660 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:42:29,662 INFO L912 BasicCegarLoop]: 355 mSDtfsCounter, 234 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:29,663 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 597 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 18:42:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-17 18:42:29,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2022-03-17 18:42:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 201 states have (on average 1.373134328358209) internal successors, (276), 217 states have internal predecessors, (276), 61 states have call successors, (61), 26 states have call predecessors, (61), 24 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-03-17 18:42:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2022-03-17 18:42:29,747 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 20 [2022-03-17 18:42:29,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:29,748 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2022-03-17 18:42:29,748 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-17 18:42:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2022-03-17 18:42:29,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-17 18:42:29,750 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:29,750 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:29,750 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 18:42:29,750 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:29,752 INFO L85 PathProgramCache]: Analyzing trace with hash 690648180, now seen corresponding path program 1 times [2022-03-17 18:42:29,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:29,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914504995] [2022-03-17 18:42:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:29,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:29,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:29,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:29,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:29,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914504995] [2022-03-17 18:42:29,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914504995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:29,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:29,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 18:42:29,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6804940] [2022-03-17 18:42:29,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:29,912 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:42:29,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:29,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:42:29,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:42:29,913 INFO L87 Difference]: Start difference. First operand 287 states and 383 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:42:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:31,199 INFO L93 Difference]: Finished difference Result 508 states and 702 transitions. [2022-03-17 18:42:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 18:42:31,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-03-17 18:42:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:31,205 INFO L225 Difference]: With dead ends: 508 [2022-03-17 18:42:31,205 INFO L226 Difference]: Without dead ends: 507 [2022-03-17 18:42:31,205 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:42:31,206 INFO L912 BasicCegarLoop]: 490 mSDtfsCounter, 428 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:31,207 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 716 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-17 18:42:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-03-17 18:42:31,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2022-03-17 18:42:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 318 states have (on average 1.3459119496855345) internal successors, (428), 329 states have internal predecessors, (428), 80 states have call successors, (80), 37 states have call predecessors, (80), 41 states have return successors, (100), 77 states have call predecessors, (100), 68 states have call successors, (100) [2022-03-17 18:42:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2022-03-17 18:42:31,229 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 25 [2022-03-17 18:42:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:31,229 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2022-03-17 18:42:31,229 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:42:31,229 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2022-03-17 18:42:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-17 18:42:31,230 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:31,230 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:31,231 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 18:42:31,231 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:31,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:31,231 INFO L85 PathProgramCache]: Analyzing trace with hash 543429165, now seen corresponding path program 1 times [2022-03-17 18:42:31,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:31,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855671127] [2022-03-17 18:42:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:31,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:31,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:31,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:31,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:31,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:31,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855671127] [2022-03-17 18:42:31,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855671127] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:31,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:31,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 18:42:31,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999341343] [2022-03-17 18:42:31,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:31,354 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:42:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:42:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:42:31,355 INFO L87 Difference]: Start difference. First operand 440 states and 608 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:42:32,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:32,110 INFO L93 Difference]: Finished difference Result 690 states and 979 transitions. [2022-03-17 18:42:32,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 18:42:32,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-03-17 18:42:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:32,114 INFO L225 Difference]: With dead ends: 690 [2022-03-17 18:42:32,114 INFO L226 Difference]: Without dead ends: 690 [2022-03-17 18:42:32,114 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:42:32,115 INFO L912 BasicCegarLoop]: 402 mSDtfsCounter, 501 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:32,116 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 610 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 18:42:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-17 18:42:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 618. [2022-03-17 18:42:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 455 states have (on average 1.3560439560439561) internal successors, (617), 466 states have internal predecessors, (617), 109 states have call successors, (109), 49 states have call predecessors, (109), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2022-03-17 18:42:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 888 transitions. [2022-03-17 18:42:32,137 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 888 transitions. Word has length 31 [2022-03-17 18:42:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:32,137 INFO L478 AbstractCegarLoop]: Abstraction has 618 states and 888 transitions. [2022-03-17 18:42:32,138 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:42:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 888 transitions. [2022-03-17 18:42:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-17 18:42:32,139 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:32,139 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:32,139 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 18:42:32,139 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:32,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1394943520, now seen corresponding path program 1 times [2022-03-17 18:42:32,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:32,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906128661] [2022-03-17 18:42:32,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:32,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:32,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:32,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:32,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:32,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906128661] [2022-03-17 18:42:32,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906128661] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:32,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:32,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 18:42:32,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235872784] [2022-03-17 18:42:32,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:32,231 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:42:32,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:32,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:42:32,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:42:32,232 INFO L87 Difference]: Start difference. First operand 618 states and 888 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:42:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:32,840 INFO L93 Difference]: Finished difference Result 661 states and 947 transitions. [2022-03-17 18:42:32,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 18:42:32,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-03-17 18:42:32,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:32,843 INFO L225 Difference]: With dead ends: 661 [2022-03-17 18:42:32,844 INFO L226 Difference]: Without dead ends: 661 [2022-03-17 18:42:32,844 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-17 18:42:32,852 INFO L912 BasicCegarLoop]: 340 mSDtfsCounter, 224 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:32,853 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 589 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 18:42:32,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-03-17 18:42:32,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 628. [2022-03-17 18:42:32,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 466 states have (on average 1.354077253218884) internal successors, (631), 475 states have internal predecessors, (631), 108 states have call successors, (108), 50 states have call predecessors, (108), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2022-03-17 18:42:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2022-03-17 18:42:32,881 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 36 [2022-03-17 18:42:32,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:32,881 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2022-03-17 18:42:32,881 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:42:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2022-03-17 18:42:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-17 18:42:32,887 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:32,888 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:32,888 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 18:42:32,888 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:32,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:32,888 INFO L85 PathProgramCache]: Analyzing trace with hash -455202915, now seen corresponding path program 1 times [2022-03-17 18:42:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:32,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208943589] [2022-03-17 18:42:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:32,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:32,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:32,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 18:42:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:33,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:33,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208943589] [2022-03-17 18:42:33,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208943589] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:33,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:33,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:42:33,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528899979] [2022-03-17 18:42:33,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:33,014 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:42:33,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:42:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:42:33,014 INFO L87 Difference]: Start difference. First operand 628 states and 901 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:33,427 INFO L93 Difference]: Finished difference Result 705 states and 1001 transitions. [2022-03-17 18:42:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 18:42:33,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 39 [2022-03-17 18:42:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:33,430 INFO L225 Difference]: With dead ends: 705 [2022-03-17 18:42:33,430 INFO L226 Difference]: Without dead ends: 705 [2022-03-17 18:42:33,430 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:42:33,431 INFO L912 BasicCegarLoop]: 320 mSDtfsCounter, 415 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:33,431 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 621 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:42:33,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-17 18:42:33,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-17 18:42:33,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.3504098360655739) internal successors, (659), 502 states have internal predecessors, (659), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-03-17 18:42:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 937 transitions. [2022-03-17 18:42:33,453 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 937 transitions. Word has length 39 [2022-03-17 18:42:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:33,454 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 937 transitions. [2022-03-17 18:42:33,455 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:33,455 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 937 transitions. [2022-03-17 18:42:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-17 18:42:33,456 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:33,456 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:33,456 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-17 18:42:33,456 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:33,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:33,456 INFO L85 PathProgramCache]: Analyzing trace with hash -454217859, now seen corresponding path program 1 times [2022-03-17 18:42:33,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:33,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262606122] [2022-03-17 18:42:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:33,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:33,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:33,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 18:42:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:33,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:33,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:33,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262606122] [2022-03-17 18:42:33,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262606122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:33,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:33,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:42:33,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116321166] [2022-03-17 18:42:33,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:33,628 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:42:33,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:33,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:42:33,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:33,629 INFO L87 Difference]: Start difference. First operand 658 states and 937 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:34,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:34,613 INFO L93 Difference]: Finished difference Result 705 states and 1000 transitions. [2022-03-17 18:42:34,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:42:34,614 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-03-17 18:42:34,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:34,616 INFO L225 Difference]: With dead ends: 705 [2022-03-17 18:42:34,616 INFO L226 Difference]: Without dead ends: 705 [2022-03-17 18:42:34,617 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-03-17 18:42:34,617 INFO L912 BasicCegarLoop]: 302 mSDtfsCounter, 559 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:34,617 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 760 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 18:42:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-17 18:42:34,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-17 18:42:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.348360655737705) internal successors, (658), 502 states have internal predecessors, (658), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-03-17 18:42:34,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 936 transitions. [2022-03-17 18:42:34,630 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 936 transitions. Word has length 39 [2022-03-17 18:42:34,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:34,630 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 936 transitions. [2022-03-17 18:42:34,630 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 936 transitions. [2022-03-17 18:42:34,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-17 18:42:34,631 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:34,631 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:34,631 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-17 18:42:34,631 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1225775968, now seen corresponding path program 1 times [2022-03-17 18:42:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:34,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80277618] [2022-03-17 18:42:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:34,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:34,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 18:42:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:34,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:34,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:34,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80277618] [2022-03-17 18:42:34,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80277618] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:34,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:34,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:42:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784959997] [2022-03-17 18:42:34,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:34,784 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:42:34,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:42:34,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:34,785 INFO L87 Difference]: Start difference. First operand 658 states and 936 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:35,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:35,797 INFO L93 Difference]: Finished difference Result 705 states and 999 transitions. [2022-03-17 18:42:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:42:35,798 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2022-03-17 18:42:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:35,800 INFO L225 Difference]: With dead ends: 705 [2022-03-17 18:42:35,800 INFO L226 Difference]: Without dead ends: 705 [2022-03-17 18:42:35,801 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-03-17 18:42:35,801 INFO L912 BasicCegarLoop]: 303 mSDtfsCounter, 1133 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 1659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:35,801 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 865 Invalid, 1659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 18:42:35,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-17 18:42:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-17 18:42:35,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.346311475409836) internal successors, (657), 502 states have internal predecessors, (657), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2022-03-17 18:42:35,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2022-03-17 18:42:35,816 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 40 [2022-03-17 18:42:35,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:35,816 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2022-03-17 18:42:35,816 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:35,816 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2022-03-17 18:42:35,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-17 18:42:35,817 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:35,817 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:35,817 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-17 18:42:35,817 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:35,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:35,817 INFO L85 PathProgramCache]: Analyzing trace with hash 636808681, now seen corresponding path program 1 times [2022-03-17 18:42:35,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:35,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404496797] [2022-03-17 18:42:35,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:35,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:35,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:35,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 18:42:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:35,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:35,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404496797] [2022-03-17 18:42:35,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404496797] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:35,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:35,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:42:35,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963508312] [2022-03-17 18:42:35,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:35,924 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:42:35,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:35,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:42:35,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:42:35,925 INFO L87 Difference]: Start difference. First operand 658 states and 935 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:36,406 INFO L93 Difference]: Finished difference Result 1186 states and 1741 transitions. [2022-03-17 18:42:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:42:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2022-03-17 18:42:36,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:36,411 INFO L225 Difference]: With dead ends: 1186 [2022-03-17 18:42:36,412 INFO L226 Difference]: Without dead ends: 1186 [2022-03-17 18:42:36,412 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:42:36,412 INFO L912 BasicCegarLoop]: 392 mSDtfsCounter, 749 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:36,412 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 719 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:42:36,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-17 18:42:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-03-17 18:42:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 817 states have (on average 1.3635250917992656) internal successors, (1114), 835 states have internal predecessors, (1114), 173 states have call successors, (173), 79 states have call predecessors, (173), 94 states have return successors, (315), 175 states have call predecessors, (315), 163 states have call successors, (315) [2022-03-17 18:42:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1602 transitions. [2022-03-17 18:42:36,436 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1602 transitions. Word has length 41 [2022-03-17 18:42:36,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:36,436 INFO L478 AbstractCegarLoop]: Abstraction has 1085 states and 1602 transitions. [2022-03-17 18:42:36,437 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1602 transitions. [2022-03-17 18:42:36,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-17 18:42:36,439 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:36,439 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:36,439 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-17 18:42:36,439 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:36,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:36,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1732782333, now seen corresponding path program 1 times [2022-03-17 18:42:36,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:36,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417604843] [2022-03-17 18:42:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:36,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:36,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:36,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-17 18:42:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:36,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:36,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:36,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417604843] [2022-03-17 18:42:36,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417604843] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:36,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:36,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 18:42:36,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896239362] [2022-03-17 18:42:36,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:36,564 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 18:42:36,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:36,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 18:42:36,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:42:36,565 INFO L87 Difference]: Start difference. First operand 1085 states and 1602 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:37,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:37,429 INFO L93 Difference]: Finished difference Result 1167 states and 1721 transitions. [2022-03-17 18:42:37,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:42:37,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2022-03-17 18:42:37,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:37,433 INFO L225 Difference]: With dead ends: 1167 [2022-03-17 18:42:37,433 INFO L226 Difference]: Without dead ends: 1148 [2022-03-17 18:42:37,434 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:42:37,434 INFO L912 BasicCegarLoop]: 327 mSDtfsCounter, 133 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:37,434 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 1134 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 18:42:37,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-17 18:42:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1078. [2022-03-17 18:42:37,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 813 states have (on average 1.3640836408364083) internal successors, (1109), 831 states have internal predecessors, (1109), 171 states have call successors, (171), 78 states have call predecessors, (171), 93 states have return successors, (313), 173 states have call predecessors, (313), 161 states have call successors, (313) [2022-03-17 18:42:37,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1593 transitions. [2022-03-17 18:42:37,458 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1593 transitions. Word has length 42 [2022-03-17 18:42:37,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:37,458 INFO L478 AbstractCegarLoop]: Abstraction has 1078 states and 1593 transitions. [2022-03-17 18:42:37,458 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1593 transitions. [2022-03-17 18:42:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-17 18:42:37,459 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:37,459 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:37,459 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-17 18:42:37,459 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:37,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:37,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1415168827, now seen corresponding path program 1 times [2022-03-17 18:42:37,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:37,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057186301] [2022-03-17 18:42:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:37,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:37,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:37,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:37,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057186301] [2022-03-17 18:42:37,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057186301] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:37,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:37,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 18:42:37,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095993249] [2022-03-17 18:42:37,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:37,547 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:42:37,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:37,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:42:37,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-17 18:42:37,548 INFO L87 Difference]: Start difference. First operand 1078 states and 1593 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:42:37,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:37,874 INFO L93 Difference]: Finished difference Result 599 states and 851 transitions. [2022-03-17 18:42:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 18:42:37,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-03-17 18:42:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:37,876 INFO L225 Difference]: With dead ends: 599 [2022-03-17 18:42:37,877 INFO L226 Difference]: Without dead ends: 599 [2022-03-17 18:42:37,877 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:42:37,877 INFO L912 BasicCegarLoop]: 281 mSDtfsCounter, 446 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:37,877 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 311 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:42:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-03-17 18:42:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 598. [2022-03-17 18:42:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 443 states have (on average 1.327313769751693) internal successors, (588), 455 states have internal predecessors, (588), 102 states have call successors, (102), 47 states have call predecessors, (102), 52 states have return successors, (160), 98 states have call predecessors, (160), 94 states have call successors, (160) [2022-03-17 18:42:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 850 transitions. [2022-03-17 18:42:37,889 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 850 transitions. Word has length 45 [2022-03-17 18:42:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:37,889 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 850 transitions. [2022-03-17 18:42:37,889 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-17 18:42:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 850 transitions. [2022-03-17 18:42:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-17 18:42:37,890 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:37,890 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:37,890 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-17 18:42:37,890 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:37,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1870236117, now seen corresponding path program 1 times [2022-03-17 18:42:37,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:37,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270112160] [2022-03-17 18:42:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:37,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:37,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:37,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 18:42:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:38,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:42:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:38,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:38,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270112160] [2022-03-17 18:42:38,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270112160] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:38,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:38,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 18:42:38,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247938742] [2022-03-17 18:42:38,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:38,035 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 18:42:38,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:38,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 18:42:38,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:42:38,035 INFO L87 Difference]: Start difference. First operand 598 states and 850 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:38,815 INFO L93 Difference]: Finished difference Result 630 states and 890 transitions. [2022-03-17 18:42:38,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 18:42:38,816 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2022-03-17 18:42:38,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:38,818 INFO L225 Difference]: With dead ends: 630 [2022-03-17 18:42:38,818 INFO L226 Difference]: Without dead ends: 608 [2022-03-17 18:42:38,818 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-17 18:42:38,819 INFO L912 BasicCegarLoop]: 293 mSDtfsCounter, 112 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:38,819 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1208 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 18:42:38,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-03-17 18:42:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2022-03-17 18:42:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 442 states have (on average 1.3235294117647058) internal successors, (585), 454 states have internal predecessors, (585), 101 states have call successors, (101), 47 states have call predecessors, (101), 52 states have return successors, (159), 97 states have call predecessors, (159), 93 states have call successors, (159) [2022-03-17 18:42:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 845 transitions. [2022-03-17 18:42:38,830 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 845 transitions. Word has length 46 [2022-03-17 18:42:38,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:38,830 INFO L478 AbstractCegarLoop]: Abstraction has 596 states and 845 transitions. [2022-03-17 18:42:38,830 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:38,830 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 845 transitions. [2022-03-17 18:42:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-17 18:42:38,830 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:38,831 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:38,831 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-17 18:42:38,831 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:38,831 INFO L85 PathProgramCache]: Analyzing trace with hash -961233056, now seen corresponding path program 1 times [2022-03-17 18:42:38,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:38,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804252647] [2022-03-17 18:42:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:38,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:38,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:38,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 18:42:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:42:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:38,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:38,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804252647] [2022-03-17 18:42:38,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804252647] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:38,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:38,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:42:38,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455815864] [2022-03-17 18:42:38,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:38,943 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:42:38,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:42:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:42:38,943 INFO L87 Difference]: Start difference. First operand 596 states and 845 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:39,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:39,419 INFO L93 Difference]: Finished difference Result 826 states and 1225 transitions. [2022-03-17 18:42:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 18:42:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2022-03-17 18:42:39,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:39,422 INFO L225 Difference]: With dead ends: 826 [2022-03-17 18:42:39,422 INFO L226 Difference]: Without dead ends: 826 [2022-03-17 18:42:39,422 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:42:39,423 INFO L912 BasicCegarLoop]: 324 mSDtfsCounter, 520 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:39,423 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 636 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:42:39,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-03-17 18:42:39,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 665. [2022-03-17 18:42:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 495 states have (on average 1.3232323232323233) internal successors, (655), 508 states have internal predecessors, (655), 109 states have call successors, (109), 50 states have call predecessors, (109), 60 states have return successors, (184), 110 states have call predecessors, (184), 101 states have call successors, (184) [2022-03-17 18:42:39,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 948 transitions. [2022-03-17 18:42:39,442 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 948 transitions. Word has length 46 [2022-03-17 18:42:39,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:39,442 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 948 transitions. [2022-03-17 18:42:39,443 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:39,443 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 948 transitions. [2022-03-17 18:42:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-17 18:42:39,443 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:39,443 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:39,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-17 18:42:39,443 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:39,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash -91170375, now seen corresponding path program 1 times [2022-03-17 18:42:39,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:39,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641951978] [2022-03-17 18:42:39,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:39,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:39,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:39,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:39,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-17 18:42:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:39,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:39,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641951978] [2022-03-17 18:42:39,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641951978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:39,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:39,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:42:39,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134975506] [2022-03-17 18:42:39,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:39,561 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:42:39,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:39,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:42:39,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:42:39,561 INFO L87 Difference]: Start difference. First operand 665 states and 948 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 18:42:40,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:40,173 INFO L93 Difference]: Finished difference Result 462 states and 599 transitions. [2022-03-17 18:42:40,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 18:42:40,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-03-17 18:42:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:40,178 INFO L225 Difference]: With dead ends: 462 [2022-03-17 18:42:40,178 INFO L226 Difference]: Without dead ends: 462 [2022-03-17 18:42:40,178 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:40,185 INFO L912 BasicCegarLoop]: 314 mSDtfsCounter, 471 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:40,185 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 677 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:42:40,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-03-17 18:42:40,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2022-03-17 18:42:40,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 327 states have (on average 1.27217125382263) internal successors, (416), 338 states have internal predecessors, (416), 69 states have call successors, (69), 38 states have call predecessors, (69), 44 states have return successors, (93), 68 states have call predecessors, (93), 61 states have call successors, (93) [2022-03-17 18:42:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 578 transitions. [2022-03-17 18:42:40,192 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 578 transitions. Word has length 49 [2022-03-17 18:42:40,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:40,192 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 578 transitions. [2022-03-17 18:42:40,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 18:42:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 578 transitions. [2022-03-17 18:42:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-17 18:42:40,193 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:40,193 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:40,193 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-17 18:42:40,193 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:40,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash 298099852, now seen corresponding path program 1 times [2022-03-17 18:42:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:40,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409416619] [2022-03-17 18:42:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:40,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:40,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:40,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:40,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 18:42:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:42:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:40,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:40,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409416619] [2022-03-17 18:42:40,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409416619] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:40,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:40,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 18:42:40,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261334746] [2022-03-17 18:42:40,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:40,334 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 18:42:40,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:40,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 18:42:40,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:42:40,335 INFO L87 Difference]: Start difference. First operand 441 states and 578 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:41,054 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2022-03-17 18:42:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:42:41,055 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-03-17 18:42:41,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:41,056 INFO L225 Difference]: With dead ends: 454 [2022-03-17 18:42:41,056 INFO L226 Difference]: Without dead ends: 453 [2022-03-17 18:42:41,056 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-03-17 18:42:41,057 INFO L912 BasicCegarLoop]: 284 mSDtfsCounter, 235 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1628 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:41,057 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1488 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 18:42:41,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-17 18:42:41,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2022-03-17 18:42:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 334 states have (on average 1.2724550898203593) internal successors, (425), 346 states have internal predecessors, (425), 70 states have call successors, (70), 38 states have call predecessors, (70), 44 states have return successors, (94), 69 states have call predecessors, (94), 62 states have call successors, (94) [2022-03-17 18:42:41,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 589 transitions. [2022-03-17 18:42:41,064 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 589 transitions. Word has length 47 [2022-03-17 18:42:41,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:41,065 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 589 transitions. [2022-03-17 18:42:41,065 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:41,065 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 589 transitions. [2022-03-17 18:42:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-17 18:42:41,066 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:41,066 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:41,066 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-17 18:42:41,066 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:41,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:41,066 INFO L85 PathProgramCache]: Analyzing trace with hash 298068108, now seen corresponding path program 1 times [2022-03-17 18:42:41,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:41,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213365369] [2022-03-17 18:42:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:41,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 18:42:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:42:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:41,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:41,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213365369] [2022-03-17 18:42:41,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213365369] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:41,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:41,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 18:42:41,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595934169] [2022-03-17 18:42:41,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:41,248 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 18:42:41,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:41,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 18:42:41,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:42:41,249 INFO L87 Difference]: Start difference. First operand 449 states and 589 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:41,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:41,811 INFO L93 Difference]: Finished difference Result 487 states and 652 transitions. [2022-03-17 18:42:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 18:42:41,812 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-03-17 18:42:41,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:41,813 INFO L225 Difference]: With dead ends: 487 [2022-03-17 18:42:41,813 INFO L226 Difference]: Without dead ends: 472 [2022-03-17 18:42:41,814 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-03-17 18:42:41,814 INFO L912 BasicCegarLoop]: 286 mSDtfsCounter, 338 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:41,814 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 1475 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:42:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-03-17 18:42:41,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2022-03-17 18:42:41,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 343 states have (on average 1.2769679300291545) internal successors, (438), 356 states have internal predecessors, (438), 70 states have call successors, (70), 38 states have call predecessors, (70), 45 states have return successors, (96), 69 states have call predecessors, (96), 62 states have call successors, (96) [2022-03-17 18:42:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2022-03-17 18:42:41,821 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 47 [2022-03-17 18:42:41,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:41,821 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2022-03-17 18:42:41,822 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:41,822 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2022-03-17 18:42:41,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-17 18:42:41,822 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:41,822 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:41,822 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-17 18:42:41,822 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:41,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:41,823 INFO L85 PathProgramCache]: Analyzing trace with hash -309998534, now seen corresponding path program 1 times [2022-03-17 18:42:41,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:41,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816057511] [2022-03-17 18:42:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:41,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 18:42:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:42:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:41,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:41,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816057511] [2022-03-17 18:42:41,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816057511] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:41,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:41,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 18:42:41,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057587339] [2022-03-17 18:42:41,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:41,958 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 18:42:41,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 18:42:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:42:41,959 INFO L87 Difference]: Start difference. First operand 459 states and 604 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:43,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:43,128 INFO L93 Difference]: Finished difference Result 590 states and 807 transitions. [2022-03-17 18:42:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-17 18:42:43,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2022-03-17 18:42:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:43,130 INFO L225 Difference]: With dead ends: 590 [2022-03-17 18:42:43,130 INFO L226 Difference]: Without dead ends: 575 [2022-03-17 18:42:43,131 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-17 18:42:43,131 INFO L912 BasicCegarLoop]: 317 mSDtfsCounter, 846 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:43,131 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 801 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 18:42:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-17 18:42:43,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 444. [2022-03-17 18:42:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 332 states have (on average 1.2771084337349397) internal successors, (424), 343 states have internal predecessors, (424), 68 states have call successors, (68), 38 states have call predecessors, (68), 43 states have return successors, (91), 66 states have call predecessors, (91), 60 states have call successors, (91) [2022-03-17 18:42:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 583 transitions. [2022-03-17 18:42:43,139 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 583 transitions. Word has length 48 [2022-03-17 18:42:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:43,139 INFO L478 AbstractCegarLoop]: Abstraction has 444 states and 583 transitions. [2022-03-17 18:42:43,139 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 583 transitions. [2022-03-17 18:42:43,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-17 18:42:43,140 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:43,140 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:43,140 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-17 18:42:43,140 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:43,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash 328516868, now seen corresponding path program 1 times [2022-03-17 18:42:43,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:43,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78675872] [2022-03-17 18:42:43,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:43,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-17 18:42:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:43,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:43,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78675872] [2022-03-17 18:42:43,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78675872] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:43,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:43,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:42:43,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186926404] [2022-03-17 18:42:43,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:43,257 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:42:43,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:43,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:42:43,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:43,257 INFO L87 Difference]: Start difference. First operand 444 states and 583 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:43,812 INFO L93 Difference]: Finished difference Result 455 states and 596 transitions. [2022-03-17 18:42:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:42:43,812 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2022-03-17 18:42:43,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:43,814 INFO L225 Difference]: With dead ends: 455 [2022-03-17 18:42:43,814 INFO L226 Difference]: Without dead ends: 427 [2022-03-17 18:42:43,814 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:42:43,814 INFO L912 BasicCegarLoop]: 289 mSDtfsCounter, 160 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:43,815 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 1515 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:42:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-17 18:42:43,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-03-17 18:42:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 318 states have (on average 1.279874213836478) internal successors, (407), 330 states have internal predecessors, (407), 66 states have call successors, (66), 36 states have call predecessors, (66), 42 states have return successors, (89), 64 states have call predecessors, (89), 58 states have call successors, (89) [2022-03-17 18:42:43,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 562 transitions. [2022-03-17 18:42:43,820 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 562 transitions. Word has length 49 [2022-03-17 18:42:43,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:43,820 INFO L478 AbstractCegarLoop]: Abstraction has 427 states and 562 transitions. [2022-03-17 18:42:43,821 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:43,821 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 562 transitions. [2022-03-17 18:42:43,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-17 18:42:43,821 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:43,821 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:43,821 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-17 18:42:43,821 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:43,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:43,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1720991068, now seen corresponding path program 1 times [2022-03-17 18:42:43,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:43,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539767175] [2022-03-17 18:42:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:43,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-17 18:42:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 18:42:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:43,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:43,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539767175] [2022-03-17 18:42:43,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539767175] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:43,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:43,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 18:42:43,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399968462] [2022-03-17 18:42:43,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:43,947 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 18:42:43,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 18:42:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:42:43,948 INFO L87 Difference]: Start difference. First operand 427 states and 562 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:44,546 INFO L93 Difference]: Finished difference Result 453 states and 597 transitions. [2022-03-17 18:42:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:42:44,547 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-03-17 18:42:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:44,548 INFO L225 Difference]: With dead ends: 453 [2022-03-17 18:42:44,548 INFO L226 Difference]: Without dead ends: 423 [2022-03-17 18:42:44,548 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-17 18:42:44,549 INFO L912 BasicCegarLoop]: 271 mSDtfsCounter, 115 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:44,549 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1070 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:42:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-17 18:42:44,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 409. [2022-03-17 18:42:44,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 304 states have (on average 1.2861842105263157) internal successors, (391), 316 states have internal predecessors, (391), 64 states have call successors, (64), 34 states have call predecessors, (64), 40 states have return successors, (87), 62 states have call predecessors, (87), 56 states have call successors, (87) [2022-03-17 18:42:44,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 542 transitions. [2022-03-17 18:42:44,555 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 542 transitions. Word has length 50 [2022-03-17 18:42:44,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:44,555 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 542 transitions. [2022-03-17 18:42:44,555 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:44,555 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 542 transitions. [2022-03-17 18:42:44,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-17 18:42:44,558 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:44,558 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:44,558 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-17 18:42:44,558 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:44,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1090499838, now seen corresponding path program 1 times [2022-03-17 18:42:44,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:44,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095300664] [2022-03-17 18:42:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:44,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:44,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:44,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 18:42:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:44,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:44,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:44,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095300664] [2022-03-17 18:42:44,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095300664] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:44,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:44,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-17 18:42:44,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298024321] [2022-03-17 18:42:44,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:44,679 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-17 18:42:44,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:44,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-17 18:42:44,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-17 18:42:44,679 INFO L87 Difference]: Start difference. First operand 409 states and 542 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 18:42:46,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:46,047 INFO L93 Difference]: Finished difference Result 600 states and 867 transitions. [2022-03-17 18:42:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-17 18:42:46,047 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2022-03-17 18:42:46,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:46,049 INFO L225 Difference]: With dead ends: 600 [2022-03-17 18:42:46,049 INFO L226 Difference]: Without dead ends: 600 [2022-03-17 18:42:46,050 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-03-17 18:42:46,050 INFO L912 BasicCegarLoop]: 421 mSDtfsCounter, 629 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:46,050 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 1243 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-17 18:42:46,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-03-17 18:42:46,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 534. [2022-03-17 18:42:46,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 399 states have (on average 1.3433583959899749) internal successors, (536), 410 states have internal predecessors, (536), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-17 18:42:46,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 769 transitions. [2022-03-17 18:42:46,059 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 769 transitions. Word has length 50 [2022-03-17 18:42:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:46,059 INFO L478 AbstractCegarLoop]: Abstraction has 534 states and 769 transitions. [2022-03-17 18:42:46,059 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 18:42:46,059 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 769 transitions. [2022-03-17 18:42:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-17 18:42:46,060 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:46,060 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:46,060 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-17 18:42:46,060 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1506717387, now seen corresponding path program 1 times [2022-03-17 18:42:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:46,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297111902] [2022-03-17 18:42:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:46,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 18:42:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:46,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:46,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297111902] [2022-03-17 18:42:46,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297111902] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:46,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:46,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-17 18:42:46,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134682856] [2022-03-17 18:42:46,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:46,191 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 18:42:46,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:46,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 18:42:46,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-17 18:42:46,192 INFO L87 Difference]: Start difference. First operand 534 states and 769 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:46,773 INFO L93 Difference]: Finished difference Result 555 states and 796 transitions. [2022-03-17 18:42:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:42:46,774 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2022-03-17 18:42:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:46,775 INFO L225 Difference]: With dead ends: 555 [2022-03-17 18:42:46,775 INFO L226 Difference]: Without dead ends: 555 [2022-03-17 18:42:46,776 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-03-17 18:42:46,776 INFO L912 BasicCegarLoop]: 240 mSDtfsCounter, 616 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:46,777 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 735 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:42:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-17 18:42:46,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 537. [2022-03-17 18:42:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 402 states have (on average 1.3432835820895523) internal successors, (540), 413 states have internal predecessors, (540), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-17 18:42:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 773 transitions. [2022-03-17 18:42:46,790 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 773 transitions. Word has length 51 [2022-03-17 18:42:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:46,791 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 773 transitions. [2022-03-17 18:42:46,791 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:46,791 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 773 transitions. [2022-03-17 18:42:46,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-17 18:42:46,793 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:46,793 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:46,793 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-17 18:42:46,793 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:46,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1791177556, now seen corresponding path program 1 times [2022-03-17 18:42:46,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:46,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018364352] [2022-03-17 18:42:46,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:46,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 18:42:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:46,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:46,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018364352] [2022-03-17 18:42:46,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018364352] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:46,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:46,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:42:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577620691] [2022-03-17 18:42:46,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:46,928 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:42:46,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:46,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:42:46,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:46,929 INFO L87 Difference]: Start difference. First operand 537 states and 773 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 18:42:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:47,732 INFO L93 Difference]: Finished difference Result 624 states and 937 transitions. [2022-03-17 18:42:47,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 18:42:47,733 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2022-03-17 18:42:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:47,735 INFO L225 Difference]: With dead ends: 624 [2022-03-17 18:42:47,735 INFO L226 Difference]: Without dead ends: 624 [2022-03-17 18:42:47,735 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-03-17 18:42:47,735 INFO L912 BasicCegarLoop]: 253 mSDtfsCounter, 491 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:47,736 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 772 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 18:42:47,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-03-17 18:42:47,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 529. [2022-03-17 18:42:47,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3350253807106598) internal successors, (526), 405 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-17 18:42:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 759 transitions. [2022-03-17 18:42:47,745 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 759 transitions. Word has length 51 [2022-03-17 18:42:47,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:47,746 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 759 transitions. [2022-03-17 18:42:47,746 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 8 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-17 18:42:47,746 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 759 transitions. [2022-03-17 18:42:47,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-17 18:42:47,747 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:47,747 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:47,747 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-17 18:42:47,747 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:47,747 INFO L85 PathProgramCache]: Analyzing trace with hash -50366668, now seen corresponding path program 1 times [2022-03-17 18:42:47,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:47,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852518304] [2022-03-17 18:42:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:47,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:47,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:47,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:47,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:47,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 18:42:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:47,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:47,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:47,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852518304] [2022-03-17 18:42:47,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852518304] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:47,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:47,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-17 18:42:47,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594891821] [2022-03-17 18:42:47,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:47,841 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-17 18:42:47,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:47,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-17 18:42:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-17 18:42:47,842 INFO L87 Difference]: Start difference. First operand 529 states and 759 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:48,263 INFO L93 Difference]: Finished difference Result 701 states and 1080 transitions. [2022-03-17 18:42:48,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-17 18:42:48,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2022-03-17 18:42:48,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:48,267 INFO L225 Difference]: With dead ends: 701 [2022-03-17 18:42:48,267 INFO L226 Difference]: Without dead ends: 701 [2022-03-17 18:42:48,267 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:42:48,268 INFO L912 BasicCegarLoop]: 389 mSDtfsCounter, 304 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:48,268 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 724 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:42:48,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-17 18:42:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 524. [2022-03-17 18:42:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 390 states have (on average 1.3307692307692307) internal successors, (519), 400 states have internal predecessors, (519), 91 states have call successors, (91), 37 states have call predecessors, (91), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2022-03-17 18:42:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 751 transitions. [2022-03-17 18:42:48,279 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 751 transitions. Word has length 51 [2022-03-17 18:42:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:48,279 INFO L478 AbstractCegarLoop]: Abstraction has 524 states and 751 transitions. [2022-03-17 18:42:48,279 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 751 transitions. [2022-03-17 18:42:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 18:42:48,280 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:48,280 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:48,280 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-17 18:42:48,280 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:48,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1529813192, now seen corresponding path program 1 times [2022-03-17 18:42:48,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:48,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109039080] [2022-03-17 18:42:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:48,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:48,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:48,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:48,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:48,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 18:42:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:48,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:48,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:48,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109039080] [2022-03-17 18:42:48,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109039080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:48,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:48,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:42:48,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171762007] [2022-03-17 18:42:48,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:48,404 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:42:48,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:48,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:42:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:48,404 INFO L87 Difference]: Start difference. First operand 524 states and 751 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:48,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:48,889 INFO L93 Difference]: Finished difference Result 544 states and 778 transitions. [2022-03-17 18:42:48,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:42:48,890 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-03-17 18:42:48,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:48,892 INFO L225 Difference]: With dead ends: 544 [2022-03-17 18:42:48,892 INFO L226 Difference]: Without dead ends: 543 [2022-03-17 18:42:48,892 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:42:48,892 INFO L912 BasicCegarLoop]: 253 mSDtfsCounter, 196 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:48,892 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 1339 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:42:48,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-03-17 18:42:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2022-03-17 18:42:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 396 states have (on average 1.3282828282828283) internal successors, (526), 407 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-17 18:42:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 760 transitions. [2022-03-17 18:42:48,900 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 760 transitions. Word has length 52 [2022-03-17 18:42:48,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:48,900 INFO L478 AbstractCegarLoop]: Abstraction has 531 states and 760 transitions. [2022-03-17 18:42:48,900 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:48,900 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 760 transitions. [2022-03-17 18:42:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-17 18:42:48,900 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:48,901 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:48,901 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-17 18:42:48,901 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:48,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1529844936, now seen corresponding path program 1 times [2022-03-17 18:42:48,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:48,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317702932] [2022-03-17 18:42:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:48,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:48,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:48,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 18:42:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:49,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:49,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317702932] [2022-03-17 18:42:49,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317702932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:49,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:49,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:42:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838542442] [2022-03-17 18:42:49,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:49,042 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:42:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:49,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:42:49,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:49,042 INFO L87 Difference]: Start difference. First operand 531 states and 760 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:49,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:49,669 INFO L93 Difference]: Finished difference Result 559 states and 794 transitions. [2022-03-17 18:42:49,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-17 18:42:49,670 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2022-03-17 18:42:49,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:49,671 INFO L225 Difference]: With dead ends: 559 [2022-03-17 18:42:49,671 INFO L226 Difference]: Without dead ends: 538 [2022-03-17 18:42:49,672 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-17 18:42:49,672 INFO L912 BasicCegarLoop]: 255 mSDtfsCounter, 138 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:49,672 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1449 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 18:42:49,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-17 18:42:49,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2022-03-17 18:42:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 395 states have (on average 1.3265822784810126) internal successors, (524), 406 states have internal predecessors, (524), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-17 18:42:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 758 transitions. [2022-03-17 18:42:49,680 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 758 transitions. Word has length 52 [2022-03-17 18:42:49,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:49,680 INFO L478 AbstractCegarLoop]: Abstraction has 530 states and 758 transitions. [2022-03-17 18:42:49,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-17 18:42:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 758 transitions. [2022-03-17 18:42:49,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-17 18:42:49,681 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:49,681 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:49,681 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-17 18:42:49,681 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:49,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:49,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1874017512, now seen corresponding path program 1 times [2022-03-17 18:42:49,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:49,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981454258] [2022-03-17 18:42:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:49,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:49,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:49,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:49,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-17 18:42:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:49,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-17 18:42:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:49,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:49,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981454258] [2022-03-17 18:42:49,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981454258] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:49,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:49,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-17 18:42:49,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994525106] [2022-03-17 18:42:49,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:49,787 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 18:42:49,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:49,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 18:42:49,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-17 18:42:49,788 INFO L87 Difference]: Start difference. First operand 530 states and 758 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:42:50,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:50,302 INFO L93 Difference]: Finished difference Result 549 states and 800 transitions. [2022-03-17 18:42:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:42:50,302 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-17 18:42:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:50,304 INFO L225 Difference]: With dead ends: 549 [2022-03-17 18:42:50,304 INFO L226 Difference]: Without dead ends: 549 [2022-03-17 18:42:50,304 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:50,304 INFO L912 BasicCegarLoop]: 268 mSDtfsCounter, 188 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:50,305 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 723 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:42:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-03-17 18:42:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 529. [2022-03-17 18:42:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3197969543147208) internal successors, (520), 405 states have internal predecessors, (520), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2022-03-17 18:42:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 754 transitions. [2022-03-17 18:42:50,312 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 754 transitions. Word has length 58 [2022-03-17 18:42:50,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:50,312 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 754 transitions. [2022-03-17 18:42:50,313 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:42:50,313 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 754 transitions. [2022-03-17 18:42:50,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-17 18:42:50,313 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:50,313 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:50,313 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-17 18:42:50,313 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:50,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:50,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2132872221, now seen corresponding path program 1 times [2022-03-17 18:42:50,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:50,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835730862] [2022-03-17 18:42:50,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:50,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:50,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:50,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:50,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:50,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-17 18:42:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:50,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835730862] [2022-03-17 18:42:50,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835730862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:50,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:50,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:42:50,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341695930] [2022-03-17 18:42:50,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:50,440 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:42:50,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:50,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:42:50,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:42:50,441 INFO L87 Difference]: Start difference. First operand 529 states and 754 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:51,453 INFO L93 Difference]: Finished difference Result 671 states and 995 transitions. [2022-03-17 18:42:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 18:42:51,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2022-03-17 18:42:51,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:51,455 INFO L225 Difference]: With dead ends: 671 [2022-03-17 18:42:51,456 INFO L226 Difference]: Without dead ends: 639 [2022-03-17 18:42:51,456 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-03-17 18:42:51,456 INFO L912 BasicCegarLoop]: 336 mSDtfsCounter, 561 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:51,456 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 737 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 18:42:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-17 18:42:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 560. [2022-03-17 18:42:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 415 states have (on average 1.344578313253012) internal successors, (558), 426 states have internal predecessors, (558), 101 states have call successors, (101), 37 states have call predecessors, (101), 43 states have return successors, (165), 98 states have call predecessors, (165), 94 states have call successors, (165) [2022-03-17 18:42:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 824 transitions. [2022-03-17 18:42:51,465 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 824 transitions. Word has length 53 [2022-03-17 18:42:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:51,466 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 824 transitions. [2022-03-17 18:42:51,466 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-17 18:42:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 824 transitions. [2022-03-17 18:42:51,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-17 18:42:51,466 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:51,466 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:51,466 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-17 18:42:51,466 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:51,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash 983025775, now seen corresponding path program 1 times [2022-03-17 18:42:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:51,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763336305] [2022-03-17 18:42:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:51,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:51,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:51,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-17 18:42:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:51,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:51,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763336305] [2022-03-17 18:42:51,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763336305] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:51,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:51,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 18:42:51,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242893565] [2022-03-17 18:42:51,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:51,635 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 18:42:51,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:51,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 18:42:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:42:51,636 INFO L87 Difference]: Start difference. First operand 560 states and 824 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:42:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:52,195 INFO L93 Difference]: Finished difference Result 390 states and 522 transitions. [2022-03-17 18:42:52,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 18:42:52,196 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-03-17 18:42:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:52,198 INFO L225 Difference]: With dead ends: 390 [2022-03-17 18:42:52,198 INFO L226 Difference]: Without dead ends: 390 [2022-03-17 18:42:52,198 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-17 18:42:52,198 INFO L912 BasicCegarLoop]: 251 mSDtfsCounter, 153 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:52,199 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1520 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:42:52,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-17 18:42:52,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 338. [2022-03-17 18:42:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 246 states have (on average 1.2560975609756098) internal successors, (309), 254 states have internal predecessors, (309), 59 states have call successors, (59), 31 states have call predecessors, (59), 32 states have return successors, (74), 54 states have call predecessors, (74), 53 states have call successors, (74) [2022-03-17 18:42:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 442 transitions. [2022-03-17 18:42:52,204 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 442 transitions. Word has length 62 [2022-03-17 18:42:52,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:52,204 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 442 transitions. [2022-03-17 18:42:52,204 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:42:52,204 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 442 transitions. [2022-03-17 18:42:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-17 18:42:52,204 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:52,204 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:52,204 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-17 18:42:52,205 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:52,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1006609107, now seen corresponding path program 1 times [2022-03-17 18:42:52,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:52,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448571168] [2022-03-17 18:42:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:52,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:52,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:52,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 18:42:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:52,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448571168] [2022-03-17 18:42:52,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448571168] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:52,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:52,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 18:42:52,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989644826] [2022-03-17 18:42:52,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:52,349 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 18:42:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 18:42:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-17 18:42:52,349 INFO L87 Difference]: Start difference. First operand 338 states and 442 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:42:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:52,932 INFO L93 Difference]: Finished difference Result 343 states and 451 transitions. [2022-03-17 18:42:52,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 18:42:52,932 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2022-03-17 18:42:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:52,933 INFO L225 Difference]: With dead ends: 343 [2022-03-17 18:42:52,933 INFO L226 Difference]: Without dead ends: 304 [2022-03-17 18:42:52,934 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-17 18:42:52,934 INFO L912 BasicCegarLoop]: 227 mSDtfsCounter, 155 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:52,934 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 1485 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 18:42:52,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-03-17 18:42:52,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2022-03-17 18:42:52,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 220 states have internal predecessors, (273), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-03-17 18:42:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 398 transitions. [2022-03-17 18:42:52,938 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 398 transitions. Word has length 58 [2022-03-17 18:42:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:52,938 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 398 transitions. [2022-03-17 18:42:52,938 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-17 18:42:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 398 transitions. [2022-03-17 18:42:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-17 18:42:52,939 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:52,939 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:52,939 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-17 18:42:52,939 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:52,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:52,939 INFO L85 PathProgramCache]: Analyzing trace with hash -763479135, now seen corresponding path program 1 times [2022-03-17 18:42:52,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:52,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250233424] [2022-03-17 18:42:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:52,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:52,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-17 18:42:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:42:53,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:53,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:53,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250233424] [2022-03-17 18:42:53,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250233424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:53,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:53,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:42:53,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413178614] [2022-03-17 18:42:53,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:53,071 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:42:53,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:53,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:42:53,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:53,072 INFO L87 Difference]: Start difference. First operand 298 states and 398 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:42:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:53,645 INFO L93 Difference]: Finished difference Result 316 states and 429 transitions. [2022-03-17 18:42:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 18:42:53,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-17 18:42:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:53,646 INFO L225 Difference]: With dead ends: 316 [2022-03-17 18:42:53,646 INFO L226 Difference]: Without dead ends: 316 [2022-03-17 18:42:53,646 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-03-17 18:42:53,647 INFO L912 BasicCegarLoop]: 211 mSDtfsCounter, 246 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:53,647 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 867 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:42:53,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-17 18:42:53,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2022-03-17 18:42:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.266355140186916) internal successors, (271), 220 states have internal predecessors, (271), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2022-03-17 18:42:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 396 transitions. [2022-03-17 18:42:53,651 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 396 transitions. Word has length 66 [2022-03-17 18:42:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:53,651 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 396 transitions. [2022-03-17 18:42:53,651 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:42:53,652 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 396 transitions. [2022-03-17 18:42:53,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-17 18:42:53,652 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:53,652 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:53,652 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-17 18:42:53,652 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1216763617, now seen corresponding path program 1 times [2022-03-17 18:42:53,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:53,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233355975] [2022-03-17 18:42:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:53,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-17 18:42:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:42:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:53,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:53,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233355975] [2022-03-17 18:42:53,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233355975] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:53,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:53,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:42:53,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054349219] [2022-03-17 18:42:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:53,791 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:42:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:42:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:53,791 INFO L87 Difference]: Start difference. First operand 298 states and 396 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:42:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:54,076 INFO L93 Difference]: Finished difference Result 330 states and 453 transitions. [2022-03-17 18:42:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:42:54,076 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-03-17 18:42:54,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:54,083 INFO L225 Difference]: With dead ends: 330 [2022-03-17 18:42:54,083 INFO L226 Difference]: Without dead ends: 330 [2022-03-17 18:42:54,084 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:42:54,084 INFO L912 BasicCegarLoop]: 225 mSDtfsCounter, 133 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:54,084 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1195 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:42:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-17 18:42:54,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 303. [2022-03-17 18:42:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 218 states have (on average 1.261467889908257) internal successors, (275), 224 states have internal predecessors, (275), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2022-03-17 18:42:54,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 409 transitions. [2022-03-17 18:42:54,089 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 409 transitions. Word has length 68 [2022-03-17 18:42:54,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:54,089 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 409 transitions. [2022-03-17 18:42:54,089 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:42:54,089 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 409 transitions. [2022-03-17 18:42:54,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-17 18:42:54,089 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:54,089 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:54,090 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-17 18:42:54,090 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:54,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash 107043316, now seen corresponding path program 1 times [2022-03-17 18:42:54,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:54,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269135809] [2022-03-17 18:42:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:54,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-17 18:42:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:42:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:54,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:54,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269135809] [2022-03-17 18:42:54,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269135809] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:54,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:54,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:42:54,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987217424] [2022-03-17 18:42:54,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:54,190 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:42:54,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:42:54,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:42:54,190 INFO L87 Difference]: Start difference. First operand 303 states and 409 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:42:54,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:54,467 INFO L93 Difference]: Finished difference Result 474 states and 674 transitions. [2022-03-17 18:42:54,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:42:54,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-17 18:42:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:54,475 INFO L225 Difference]: With dead ends: 474 [2022-03-17 18:42:54,475 INFO L226 Difference]: Without dead ends: 474 [2022-03-17 18:42:54,476 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:54,476 INFO L912 BasicCegarLoop]: 317 mSDtfsCounter, 230 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:54,476 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 793 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 18:42:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-03-17 18:42:54,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 307. [2022-03-17 18:42:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 222 states have (on average 1.2657657657657657) internal successors, (281), 228 states have internal predecessors, (281), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2022-03-17 18:42:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 415 transitions. [2022-03-17 18:42:54,481 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 415 transitions. Word has length 69 [2022-03-17 18:42:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:54,482 INFO L478 AbstractCegarLoop]: Abstraction has 307 states and 415 transitions. [2022-03-17 18:42:54,482 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-17 18:42:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 415 transitions. [2022-03-17 18:42:54,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-17 18:42:54,482 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:54,482 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:54,482 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-17 18:42:54,482 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:54,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:54,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1007458050, now seen corresponding path program 1 times [2022-03-17 18:42:54,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:54,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203377224] [2022-03-17 18:42:54,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:54,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-17 18:42:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:42:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:54,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:54,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203377224] [2022-03-17 18:42:54,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203377224] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:54,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:54,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-17 18:42:54,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705277845] [2022-03-17 18:42:54,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:54,618 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 18:42:54,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:54,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 18:42:54,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-17 18:42:54,618 INFO L87 Difference]: Start difference. First operand 307 states and 415 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:42:55,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:55,338 INFO L93 Difference]: Finished difference Result 529 states and 764 transitions. [2022-03-17 18:42:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:42:55,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-03-17 18:42:55,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:55,340 INFO L225 Difference]: With dead ends: 529 [2022-03-17 18:42:55,341 INFO L226 Difference]: Without dead ends: 529 [2022-03-17 18:42:55,341 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:42:55,341 INFO L912 BasicCegarLoop]: 253 mSDtfsCounter, 328 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:55,341 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 761 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-17 18:42:55,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-03-17 18:42:55,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 490. [2022-03-17 18:42:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 357 states have (on average 1.2913165266106443) internal successors, (461), 366 states have internal predecessors, (461), 89 states have call successors, (89), 35 states have call predecessors, (89), 43 states have return successors, (153), 89 states have call predecessors, (153), 85 states have call successors, (153) [2022-03-17 18:42:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2022-03-17 18:42:55,361 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 70 [2022-03-17 18:42:55,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:55,361 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2022-03-17 18:42:55,362 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-17 18:42:55,362 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2022-03-17 18:42:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-17 18:42:55,362 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:55,362 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:55,362 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-17 18:42:55,362 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:55,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:55,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2035760571, now seen corresponding path program 1 times [2022-03-17 18:42:55,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:55,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253230175] [2022-03-17 18:42:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:42:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:42:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:42:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:55,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:55,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253230175] [2022-03-17 18:42:55,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253230175] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:55,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:55,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-17 18:42:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12482316] [2022-03-17 18:42:55,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:55,556 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-17 18:42:55,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-17 18:42:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-17 18:42:55,556 INFO L87 Difference]: Start difference. First operand 490 states and 703 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-17 18:42:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:55,854 INFO L93 Difference]: Finished difference Result 493 states and 705 transitions. [2022-03-17 18:42:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 18:42:55,854 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2022-03-17 18:42:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:55,856 INFO L225 Difference]: With dead ends: 493 [2022-03-17 18:42:55,856 INFO L226 Difference]: Without dead ends: 493 [2022-03-17 18:42:55,856 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-03-17 18:42:55,856 INFO L912 BasicCegarLoop]: 238 mSDtfsCounter, 208 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:55,856 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1162 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:42:55,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-17 18:42:55,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 484. [2022-03-17 18:42:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 353 states have (on average 1.2832861189801699) internal successors, (453), 361 states have internal predecessors, (453), 88 states have call successors, (88), 35 states have call predecessors, (88), 42 states have return successors, (146), 88 states have call predecessors, (146), 84 states have call successors, (146) [2022-03-17 18:42:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 687 transitions. [2022-03-17 18:42:55,863 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 687 transitions. Word has length 72 [2022-03-17 18:42:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:55,863 INFO L478 AbstractCegarLoop]: Abstraction has 484 states and 687 transitions. [2022-03-17 18:42:55,864 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-17 18:42:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 687 transitions. [2022-03-17 18:42:55,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-17 18:42:55,864 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:55,864 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:55,864 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-17 18:42:55,864 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:55,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:55,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1777696599, now seen corresponding path program 1 times [2022-03-17 18:42:55,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:55,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382887821] [2022-03-17 18:42:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:55,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-17 18:42:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:42:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:55,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:42:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:56,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-17 18:42:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:56,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:56,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382887821] [2022-03-17 18:42:56,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382887821] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:56,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:56,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-17 18:42:56,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727714027] [2022-03-17 18:42:56,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:56,020 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-17 18:42:56,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:56,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-17 18:42:56,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-17 18:42:56,021 INFO L87 Difference]: Start difference. First operand 484 states and 687 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-17 18:42:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:56,700 INFO L93 Difference]: Finished difference Result 450 states and 629 transitions. [2022-03-17 18:42:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 18:42:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-03-17 18:42:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:56,702 INFO L225 Difference]: With dead ends: 450 [2022-03-17 18:42:56,702 INFO L226 Difference]: Without dead ends: 450 [2022-03-17 18:42:56,703 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-03-17 18:42:56,703 INFO L912 BasicCegarLoop]: 317 mSDtfsCounter, 232 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:56,703 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1033 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 18:42:56,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-17 18:42:56,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2022-03-17 18:42:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 320 states have (on average 1.296875) internal successors, (415), 329 states have internal predecessors, (415), 79 states have call successors, (79), 33 states have call predecessors, (79), 36 states have return successors, (110), 74 states have call predecessors, (110), 75 states have call successors, (110) [2022-03-17 18:42:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 604 transitions. [2022-03-17 18:42:56,709 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 604 transitions. Word has length 83 [2022-03-17 18:42:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:56,709 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 604 transitions. [2022-03-17 18:42:56,709 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-17 18:42:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 604 transitions. [2022-03-17 18:42:56,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-17 18:42:56,710 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:56,710 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:56,710 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-17 18:42:56,710 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:56,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:56,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1836701912, now seen corresponding path program 1 times [2022-03-17 18:42:56,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:56,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175725946] [2022-03-17 18:42:56,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:56,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:56,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:56,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 18:42:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:56,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:42:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:42:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-17 18:42:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:57,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:57,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175725946] [2022-03-17 18:42:57,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175725946] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:57,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:57,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-17 18:42:57,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138766195] [2022-03-17 18:42:57,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:57,030 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-17 18:42:57,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:57,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-17 18:42:57,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-17 18:42:57,031 INFO L87 Difference]: Start difference. First operand 436 states and 604 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-17 18:42:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:57,602 INFO L93 Difference]: Finished difference Result 483 states and 678 transitions. [2022-03-17 18:42:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-17 18:42:57,603 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2022-03-17 18:42:57,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:57,604 INFO L225 Difference]: With dead ends: 483 [2022-03-17 18:42:57,604 INFO L226 Difference]: Without dead ends: 461 [2022-03-17 18:42:57,604 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-17 18:42:57,605 INFO L912 BasicCegarLoop]: 234 mSDtfsCounter, 211 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:57,605 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 2662 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:42:57,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-03-17 18:42:57,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 447. [2022-03-17 18:42:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 329 states have (on average 1.2887537993920972) internal successors, (424), 339 states have internal predecessors, (424), 79 states have call successors, (79), 33 states have call predecessors, (79), 38 states have return successors, (116), 75 states have call predecessors, (116), 75 states have call successors, (116) [2022-03-17 18:42:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2022-03-17 18:42:57,611 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 92 [2022-03-17 18:42:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:57,611 INFO L478 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2022-03-17 18:42:57,611 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-17 18:42:57,611 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2022-03-17 18:42:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-17 18:42:57,612 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:57,612 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:57,612 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-17 18:42:57,612 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:57,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1857542518, now seen corresponding path program 1 times [2022-03-17 18:42:57,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:57,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458075578] [2022-03-17 18:42:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:57,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 18:42:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:42:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:42:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-17 18:42:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:57,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:57,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458075578] [2022-03-17 18:42:57,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458075578] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:57,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:57,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-17 18:42:57,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947584234] [2022-03-17 18:42:57,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:57,887 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-17 18:42:57,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:57,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-17 18:42:57,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-17 18:42:57,891 INFO L87 Difference]: Start difference. First operand 447 states and 619 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-17 18:42:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:42:58,733 INFO L93 Difference]: Finished difference Result 481 states and 674 transitions. [2022-03-17 18:42:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-17 18:42:58,734 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-03-17 18:42:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:42:58,735 INFO L225 Difference]: With dead ends: 481 [2022-03-17 18:42:58,735 INFO L226 Difference]: Without dead ends: 459 [2022-03-17 18:42:58,736 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-17 18:42:58,736 INFO L912 BasicCegarLoop]: 249 mSDtfsCounter, 131 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 18:42:58,736 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 3057 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2004 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 18:42:58,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-03-17 18:42:58,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-03-17 18:42:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 319 states have (on average 1.297805642633229) internal successors, (414), 328 states have internal predecessors, (414), 78 states have call successors, (78), 33 states have call predecessors, (78), 36 states have return successors, (108), 73 states have call predecessors, (108), 74 states have call successors, (108) [2022-03-17 18:42:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 600 transitions. [2022-03-17 18:42:58,742 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 600 transitions. Word has length 93 [2022-03-17 18:42:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:42:58,742 INFO L478 AbstractCegarLoop]: Abstraction has 434 states and 600 transitions. [2022-03-17 18:42:58,743 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2022-03-17 18:42:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 600 transitions. [2022-03-17 18:42:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-17 18:42:58,743 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:42:58,743 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:42:58,743 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-17 18:42:58,743 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:42:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:42:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1054192149, now seen corresponding path program 1 times [2022-03-17 18:42:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:42:58,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928629012] [2022-03-17 18:42:58,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:42:58,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:42:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:58,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:42:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:42:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:42:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 18:42:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:58,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:59,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:42:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:59,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:42:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:59,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:42:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:59,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:42:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:59,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-17 18:42:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-17 18:42:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:42:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:42:59,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:42:59,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928629012] [2022-03-17 18:42:59,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928629012] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:42:59,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:42:59,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-17 18:42:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117202164] [2022-03-17 18:42:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:42:59,085 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-17 18:42:59,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:42:59,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-17 18:42:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-03-17 18:42:59,086 INFO L87 Difference]: Start difference. First operand 434 states and 600 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-17 18:43:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:00,308 INFO L93 Difference]: Finished difference Result 467 states and 639 transitions. [2022-03-17 18:43:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-17 18:43:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2022-03-17 18:43:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:00,310 INFO L225 Difference]: With dead ends: 467 [2022-03-17 18:43:00,310 INFO L226 Difference]: Without dead ends: 434 [2022-03-17 18:43:00,310 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2022-03-17 18:43:00,310 INFO L912 BasicCegarLoop]: 210 mSDtfsCounter, 405 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:00,311 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 825 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-17 18:43:00,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-03-17 18:43:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 424. [2022-03-17 18:43:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 313 states have (on average 1.3003194888178913) internal successors, (407), 322 states have internal predecessors, (407), 75 states have call successors, (75), 32 states have call predecessors, (75), 35 states have return successors, (105), 70 states have call predecessors, (105), 71 states have call successors, (105) [2022-03-17 18:43:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 587 transitions. [2022-03-17 18:43:00,316 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 587 transitions. Word has length 103 [2022-03-17 18:43:00,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:00,316 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 587 transitions. [2022-03-17 18:43:00,317 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-17 18:43:00,317 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 587 transitions. [2022-03-17 18:43:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-17 18:43:00,317 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:00,317 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:00,317 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-17 18:43:00,318 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1385513232, now seen corresponding path program 1 times [2022-03-17 18:43:00,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:00,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717512932] [2022-03-17 18:43:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:00,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 18:43:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-17 18:43:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-17 18:43:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-17 18:43:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:00,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:00,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717512932] [2022-03-17 18:43:00,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717512932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:00,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:00,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-17 18:43:00,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447974345] [2022-03-17 18:43:00,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:00,685 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-17 18:43:00,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:00,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-17 18:43:00,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-17 18:43:00,686 INFO L87 Difference]: Start difference. First operand 424 states and 587 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-17 18:43:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:01,444 INFO L93 Difference]: Finished difference Result 478 states and 676 transitions. [2022-03-17 18:43:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-17 18:43:01,444 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2022-03-17 18:43:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:01,446 INFO L225 Difference]: With dead ends: 478 [2022-03-17 18:43:01,446 INFO L226 Difference]: Without dead ends: 454 [2022-03-17 18:43:01,447 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-03-17 18:43:01,447 INFO L912 BasicCegarLoop]: 200 mSDtfsCounter, 137 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:01,447 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 2252 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-17 18:43:01,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-03-17 18:43:01,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 440. [2022-03-17 18:43:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 324 states have (on average 1.2901234567901234) internal successors, (418), 334 states have internal predecessors, (418), 78 states have call successors, (78), 32 states have call predecessors, (78), 37 states have return successors, (114), 74 states have call predecessors, (114), 73 states have call successors, (114) [2022-03-17 18:43:01,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 610 transitions. [2022-03-17 18:43:01,453 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 610 transitions. Word has length 108 [2022-03-17 18:43:01,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:01,454 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 610 transitions. [2022-03-17 18:43:01,454 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-17 18:43:01,454 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 610 transitions. [2022-03-17 18:43:01,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-17 18:43:01,454 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:01,454 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:01,454 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-17 18:43:01,455 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:01,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:01,455 INFO L85 PathProgramCache]: Analyzing trace with hash -205451642, now seen corresponding path program 1 times [2022-03-17 18:43:01,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:01,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421579133] [2022-03-17 18:43:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:01,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 18:43:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-17 18:43:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-17 18:43:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-17 18:43:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:01,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:01,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421579133] [2022-03-17 18:43:01,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421579133] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:01,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:01,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-17 18:43:01,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781716011] [2022-03-17 18:43:01,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:01,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-17 18:43:01,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-17 18:43:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-17 18:43:01,837 INFO L87 Difference]: Start difference. First operand 440 states and 610 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-17 18:43:02,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:02,719 INFO L93 Difference]: Finished difference Result 480 states and 674 transitions. [2022-03-17 18:43:02,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-17 18:43:02,720 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2022-03-17 18:43:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:02,721 INFO L225 Difference]: With dead ends: 480 [2022-03-17 18:43:02,721 INFO L226 Difference]: Without dead ends: 443 [2022-03-17 18:43:02,722 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-03-17 18:43:02,722 INFO L912 BasicCegarLoop]: 238 mSDtfsCounter, 120 mSDsluCounter, 2390 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2628 SdHoareTripleChecker+Invalid, 2183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:02,722 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 2628 Invalid, 2183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-17 18:43:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-03-17 18:43:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 413. [2022-03-17 18:43:02,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 304 states have (on average 1.2664473684210527) internal successors, (385), 312 states have internal predecessors, (385), 75 states have call successors, (75), 32 states have call predecessors, (75), 33 states have return successors, (97), 69 states have call predecessors, (97), 70 states have call successors, (97) [2022-03-17 18:43:02,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 557 transitions. [2022-03-17 18:43:02,730 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 557 transitions. Word has length 109 [2022-03-17 18:43:02,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:02,730 INFO L478 AbstractCegarLoop]: Abstraction has 413 states and 557 transitions. [2022-03-17 18:43:02,730 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-17 18:43:02,730 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 557 transitions. [2022-03-17 18:43:02,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-17 18:43:02,731 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:02,731 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:02,731 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-17 18:43:02,731 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:02,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:02,732 INFO L85 PathProgramCache]: Analyzing trace with hash -790809002, now seen corresponding path program 1 times [2022-03-17 18:43:02,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:02,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201826095] [2022-03-17 18:43:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:02,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-17 18:43:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 18:43:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-17 18:43:02,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 18:43:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-17 18:43:02,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:02,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201826095] [2022-03-17 18:43:02,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201826095] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:02,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:02,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 18:43:02,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453551279] [2022-03-17 18:43:02,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:02,938 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 18:43:02,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:02,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 18:43:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-17 18:43:02,939 INFO L87 Difference]: Start difference. First operand 413 states and 557 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-17 18:43:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:03,504 INFO L93 Difference]: Finished difference Result 420 states and 559 transitions. [2022-03-17 18:43:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 18:43:03,504 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2022-03-17 18:43:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:03,506 INFO L225 Difference]: With dead ends: 420 [2022-03-17 18:43:03,506 INFO L226 Difference]: Without dead ends: 420 [2022-03-17 18:43:03,506 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-17 18:43:03,506 INFO L912 BasicCegarLoop]: 217 mSDtfsCounter, 156 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:03,506 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 1253 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 18:43:03,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-17 18:43:03,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 408. [2022-03-17 18:43:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 302 states have (on average 1.2483443708609272) internal successors, (377), 309 states have internal predecessors, (377), 71 states have call successors, (71), 32 states have call predecessors, (71), 34 states have return successors, (92), 67 states have call predecessors, (92), 66 states have call successors, (92) [2022-03-17 18:43:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 540 transitions. [2022-03-17 18:43:03,530 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 540 transitions. Word has length 121 [2022-03-17 18:43:03,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:03,530 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 540 transitions. [2022-03-17 18:43:03,530 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-17 18:43:03,530 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 540 transitions. [2022-03-17 18:43:03,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-17 18:43:03,531 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:03,531 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:03,531 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-17 18:43:03,531 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:03,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:03,532 INFO L85 PathProgramCache]: Analyzing trace with hash -474317813, now seen corresponding path program 1 times [2022-03-17 18:43:03,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:03,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602051641] [2022-03-17 18:43:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:03,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-17 18:43:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 18:43:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-17 18:43:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 18:43:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-17 18:43:03,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:03,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602051641] [2022-03-17 18:43:03,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602051641] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:03,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:03,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 18:43:03,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926189188] [2022-03-17 18:43:03,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:03,725 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 18:43:03,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:03,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 18:43:03,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-17 18:43:03,726 INFO L87 Difference]: Start difference. First operand 408 states and 540 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-17 18:43:04,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:04,202 INFO L93 Difference]: Finished difference Result 547 states and 788 transitions. [2022-03-17 18:43:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 18:43:04,203 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2022-03-17 18:43:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:04,205 INFO L225 Difference]: With dead ends: 547 [2022-03-17 18:43:04,205 INFO L226 Difference]: Without dead ends: 547 [2022-03-17 18:43:04,205 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-17 18:43:04,205 INFO L912 BasicCegarLoop]: 273 mSDtfsCounter, 196 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:04,205 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 1507 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:43:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-03-17 18:43:04,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 399. [2022-03-17 18:43:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 294 states have (on average 1.248299319727891) internal successors, (367), 301 states have internal predecessors, (367), 71 states have call successors, (71), 32 states have call predecessors, (71), 33 states have return successors, (91), 66 states have call predecessors, (91), 66 states have call successors, (91) [2022-03-17 18:43:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 529 transitions. [2022-03-17 18:43:04,212 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 529 transitions. Word has length 122 [2022-03-17 18:43:04,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:04,212 INFO L478 AbstractCegarLoop]: Abstraction has 399 states and 529 transitions. [2022-03-17 18:43:04,212 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-03-17 18:43:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 529 transitions. [2022-03-17 18:43:04,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-17 18:43:04,213 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:04,213 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:04,213 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-17 18:43:04,213 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash -286096315, now seen corresponding path program 1 times [2022-03-17 18:43:04,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:04,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827528628] [2022-03-17 18:43:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:04,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-17 18:43:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-17 18:43:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:04,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-17 18:43:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-17 18:43:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-17 18:43:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-17 18:43:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 18:43:04,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:04,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827528628] [2022-03-17 18:43:04,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827528628] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:04,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:04,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-17 18:43:04,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691055773] [2022-03-17 18:43:04,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:04,578 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-17 18:43:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:04,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-17 18:43:04,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-03-17 18:43:04,578 INFO L87 Difference]: Start difference. First operand 399 states and 529 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-17 18:43:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:05,783 INFO L93 Difference]: Finished difference Result 413 states and 548 transitions. [2022-03-17 18:43:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-17 18:43:05,783 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 119 [2022-03-17 18:43:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:05,784 INFO L225 Difference]: With dead ends: 413 [2022-03-17 18:43:05,784 INFO L226 Difference]: Without dead ends: 354 [2022-03-17 18:43:05,785 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=1718, Unknown=0, NotChecked=0, Total=1980 [2022-03-17 18:43:05,785 INFO L912 BasicCegarLoop]: 178 mSDtfsCounter, 398 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:05,785 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 492 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-17 18:43:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-17 18:43:05,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 341. [2022-03-17 18:43:05,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.18) internal successors, (295), 255 states have internal predecessors, (295), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2022-03-17 18:43:05,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 436 transitions. [2022-03-17 18:43:05,790 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 436 transitions. Word has length 119 [2022-03-17 18:43:05,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:05,790 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 436 transitions. [2022-03-17 18:43:05,790 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-03-17 18:43:05,790 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 436 transitions. [2022-03-17 18:43:05,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-17 18:43:05,791 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:05,791 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:05,792 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-17 18:43:05,792 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash 762913287, now seen corresponding path program 1 times [2022-03-17 18:43:05,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:05,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430331667] [2022-03-17 18:43:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:05,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-17 18:43:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 18:43:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-17 18:43:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 18:43:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-17 18:43:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-17 18:43:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:05,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:05,982 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-17 18:43:05,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:05,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430331667] [2022-03-17 18:43:05,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430331667] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 18:43:05,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160839942] [2022-03-17 18:43:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:05,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:43:05,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:43:05,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 18:43:06,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 18:43:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-17 18:43:06,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 18:43:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-03-17 18:43:06,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 18:43:06,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160839942] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:06,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 18:43:06,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-03-17 18:43:06,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439829514] [2022-03-17 18:43:06,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:06,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 18:43:06,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:06,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 18:43:06,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-17 18:43:06,432 INFO L87 Difference]: Start difference. First operand 341 states and 436 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-17 18:43:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:06,436 INFO L93 Difference]: Finished difference Result 341 states and 434 transitions. [2022-03-17 18:43:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 18:43:06,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 163 [2022-03-17 18:43:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:06,437 INFO L225 Difference]: With dead ends: 341 [2022-03-17 18:43:06,437 INFO L226 Difference]: Without dead ends: 341 [2022-03-17 18:43:06,437 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-17 18:43:06,438 INFO L912 BasicCegarLoop]: 173 mSDtfsCounter, 28 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:06,438 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 303 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 18:43:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-03-17 18:43:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-03-17 18:43:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.172) internal successors, (293), 255 states have internal predecessors, (293), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2022-03-17 18:43:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 434 transitions. [2022-03-17 18:43:06,443 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 434 transitions. Word has length 163 [2022-03-17 18:43:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:06,443 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 434 transitions. [2022-03-17 18:43:06,443 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-03-17 18:43:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 434 transitions. [2022-03-17 18:43:06,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-17 18:43:06,444 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:06,444 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:06,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-17 18:43:06,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-17 18:43:06,655 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:06,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1424868086, now seen corresponding path program 1 times [2022-03-17 18:43:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:06,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999145436] [2022-03-17 18:43:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-17 18:43:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 18:43:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-17 18:43:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 18:43:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-17 18:43:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-17 18:43:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-17 18:43:06,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:06,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999145436] [2022-03-17 18:43:06,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999145436] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-17 18:43:06,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991783068] [2022-03-17 18:43:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:06,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 18:43:06,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 18:43:06,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 18:43:06,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 18:43:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-17 18:43:07,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 18:43:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-17 18:43:07,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 18:43:07,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991783068] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:07,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 18:43:07,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 15 [2022-03-17 18:43:07,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061505367] [2022-03-17 18:43:07,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:07,267 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 18:43:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:07,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 18:43:07,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-17 18:43:07,268 INFO L87 Difference]: Start difference. First operand 341 states and 434 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-17 18:43:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:07,317 INFO L93 Difference]: Finished difference Result 374 states and 481 transitions. [2022-03-17 18:43:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 18:43:07,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2022-03-17 18:43:07,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:07,318 INFO L225 Difference]: With dead ends: 374 [2022-03-17 18:43:07,318 INFO L226 Difference]: Without dead ends: 372 [2022-03-17 18:43:07,318 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-03-17 18:43:07,319 INFO L912 BasicCegarLoop]: 171 mSDtfsCounter, 12 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:07,319 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 826 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 18:43:07,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-03-17 18:43:07,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 361. [2022-03-17 18:43:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 268 states have (on average 1.1604477611940298) internal successors, (311), 273 states have internal predecessors, (311), 64 states have call successors, (64), 29 states have call predecessors, (64), 28 states have return successors, (88), 58 states have call predecessors, (88), 58 states have call successors, (88) [2022-03-17 18:43:07,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 463 transitions. [2022-03-17 18:43:07,324 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 463 transitions. Word has length 163 [2022-03-17 18:43:07,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:07,324 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 463 transitions. [2022-03-17 18:43:07,325 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-03-17 18:43:07,325 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 463 transitions. [2022-03-17 18:43:07,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-17 18:43:07,326 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:07,326 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:07,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 18:43:07,544 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-17 18:43:07,544 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -589316084, now seen corresponding path program 1 times [2022-03-17 18:43:07,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:07,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589962362] [2022-03-17 18:43:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-17 18:43:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 18:43:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-17 18:43:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 18:43:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-17 18:43:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-17 18:43:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-17 18:43:07,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:07,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589962362] [2022-03-17 18:43:07,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589962362] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:07,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:07,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 18:43:07,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209524713] [2022-03-17 18:43:07,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:07,769 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 18:43:07,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 18:43:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-17 18:43:07,769 INFO L87 Difference]: Start difference. First operand 361 states and 463 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-17 18:43:08,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:08,200 INFO L93 Difference]: Finished difference Result 428 states and 566 transitions. [2022-03-17 18:43:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 18:43:08,200 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 164 [2022-03-17 18:43:08,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:08,202 INFO L225 Difference]: With dead ends: 428 [2022-03-17 18:43:08,202 INFO L226 Difference]: Without dead ends: 428 [2022-03-17 18:43:08,202 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-17 18:43:08,202 INFO L912 BasicCegarLoop]: 215 mSDtfsCounter, 150 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:08,203 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 1135 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-17 18:43:08,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-17 18:43:08,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 345. [2022-03-17 18:43:08,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 256 states have (on average 1.14453125) internal successors, (293), 260 states have internal predecessors, (293), 60 states have call successors, (60), 29 states have call predecessors, (60), 28 states have return successors, (80), 55 states have call predecessors, (80), 54 states have call successors, (80) [2022-03-17 18:43:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 433 transitions. [2022-03-17 18:43:08,208 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 433 transitions. Word has length 164 [2022-03-17 18:43:08,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:08,208 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 433 transitions. [2022-03-17 18:43:08,208 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-03-17 18:43:08,208 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 433 transitions. [2022-03-17 18:43:08,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-03-17 18:43:08,210 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:08,210 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:08,210 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-17 18:43:08,210 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:08,210 INFO L85 PathProgramCache]: Analyzing trace with hash -158276280, now seen corresponding path program 1 times [2022-03-17 18:43:08,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:08,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943367710] [2022-03-17 18:43:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:08,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-17 18:43:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 18:43:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-17 18:43:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 18:43:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-17 18:43:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-17 18:43:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-17 18:43:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-17 18:43:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-03-17 18:43:08,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:08,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943367710] [2022-03-17 18:43:08,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943367710] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:08,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:08,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 18:43:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662650384] [2022-03-17 18:43:08,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:08,424 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 18:43:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:08,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 18:43:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-17 18:43:08,425 INFO L87 Difference]: Start difference. First operand 345 states and 433 transitions. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-17 18:43:08,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:08,793 INFO L93 Difference]: Finished difference Result 354 states and 451 transitions. [2022-03-17 18:43:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 18:43:08,793 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 204 [2022-03-17 18:43:08,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:08,795 INFO L225 Difference]: With dead ends: 354 [2022-03-17 18:43:08,795 INFO L226 Difference]: Without dead ends: 354 [2022-03-17 18:43:08,795 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-17 18:43:08,795 INFO L912 BasicCegarLoop]: 191 mSDtfsCounter, 148 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:08,795 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 915 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 18:43:08,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-17 18:43:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 309. [2022-03-17 18:43:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 231 states have (on average 1.1255411255411256) internal successors, (260), 234 states have internal predecessors, (260), 52 states have call successors, (52), 24 states have call predecessors, (52), 25 states have return successors, (73), 50 states have call predecessors, (73), 47 states have call successors, (73) [2022-03-17 18:43:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 385 transitions. [2022-03-17 18:43:08,800 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 385 transitions. Word has length 204 [2022-03-17 18:43:08,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:08,800 INFO L478 AbstractCegarLoop]: Abstraction has 309 states and 385 transitions. [2022-03-17 18:43:08,800 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-17 18:43:08,800 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 385 transitions. [2022-03-17 18:43:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-03-17 18:43:08,801 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 18:43:08,801 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:08,802 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-17 18:43:08,802 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 18:43:08,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 18:43:08,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1341132510, now seen corresponding path program 1 times [2022-03-17 18:43:08,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 18:43:08,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641446345] [2022-03-17 18:43:08,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 18:43:08,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 18:43:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 18:43:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-17 18:43:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-17 18:43:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-17 18:43:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-17 18:43:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-17 18:43:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-17 18:43:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-17 18:43:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-17 18:43:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-17 18:43:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-17 18:43:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:08,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-17 18:43:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:09,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-17 18:43:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:09,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-17 18:43:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-17 18:43:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 18:43:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-03-17 18:43:09,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 18:43:09,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641446345] [2022-03-17 18:43:09,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641446345] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 18:43:09,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 18:43:09,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-17 18:43:09,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816403815] [2022-03-17 18:43:09,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 18:43:09,015 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-17 18:43:09,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 18:43:09,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-17 18:43:09,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-17 18:43:09,015 INFO L87 Difference]: Start difference. First operand 309 states and 385 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-17 18:43:09,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 18:43:09,283 INFO L93 Difference]: Finished difference Result 290 states and 362 transitions. [2022-03-17 18:43:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-17 18:43:09,284 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 207 [2022-03-17 18:43:09,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 18:43:09,284 INFO L225 Difference]: With dead ends: 290 [2022-03-17 18:43:09,284 INFO L226 Difference]: Without dead ends: 0 [2022-03-17 18:43:09,284 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-03-17 18:43:09,284 INFO L912 BasicCegarLoop]: 153 mSDtfsCounter, 146 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-17 18:43:09,284 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 663 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-17 18:43:09,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-17 18:43:09,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-17 18:43:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-17 18:43:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-17 18:43:09,285 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2022-03-17 18:43:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 18:43:09,285 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-17 18:43:09,285 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-03-17 18:43:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-17 18:43:09,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-17 18:43:09,287 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 18:43:09,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-17 18:43:09,289 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 18:43:09,290 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 18:43:09,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:43:09 BasicIcfg [2022-03-17 18:43:09,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 18:43:09,294 INFO L158 Benchmark]: Toolchain (without parser) took 41786.56ms. Allocated memory was 254.8MB in the beginning and 464.5MB in the end (delta: 209.7MB). Free memory was 201.8MB in the beginning and 379.5MB in the end (delta: -177.7MB). Peak memory consumption was 33.1MB. Max. memory is 8.0GB. [2022-03-17 18:43:09,294 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 254.8MB. Free memory is still 219.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 18:43:09,294 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.94ms. Allocated memory is still 254.8MB. Free memory was 201.6MB in the beginning and 218.7MB in the end (delta: -17.1MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. [2022-03-17 18:43:09,294 INFO L158 Benchmark]: Boogie Preprocessor took 50.09ms. Allocated memory is still 254.8MB. Free memory was 218.7MB in the beginning and 215.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-17 18:43:09,294 INFO L158 Benchmark]: RCFGBuilder took 590.89ms. Allocated memory is still 254.8MB. Free memory was 215.2MB in the beginning and 174.9MB in the end (delta: 40.3MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-03-17 18:43:09,294 INFO L158 Benchmark]: IcfgTransformer took 67.10ms. Allocated memory is still 254.8MB. Free memory was 174.9MB in the beginning and 225.8MB in the end (delta: -50.9MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-03-17 18:43:09,294 INFO L158 Benchmark]: TraceAbstraction took 40769.06ms. Allocated memory was 254.8MB in the beginning and 464.5MB in the end (delta: 209.7MB). Free memory was 225.3MB in the beginning and 379.5MB in the end (delta: -154.2MB). Peak memory consumption was 55.5MB. Max. memory is 8.0GB. [2022-03-17 18:43:09,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 254.8MB. Free memory is still 219.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 303.94ms. Allocated memory is still 254.8MB. Free memory was 201.6MB in the beginning and 218.7MB in the end (delta: -17.1MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.09ms. Allocated memory is still 254.8MB. Free memory was 218.7MB in the beginning and 215.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 590.89ms. Allocated memory is still 254.8MB. Free memory was 215.2MB in the beginning and 174.9MB in the end (delta: 40.3MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * IcfgTransformer took 67.10ms. Allocated memory is still 254.8MB. Free memory was 174.9MB in the beginning and 225.8MB in the end (delta: -50.9MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * TraceAbstraction took 40769.06ms. Allocated memory was 254.8MB in the beginning and 464.5MB in the end (delta: 209.7MB). Free memory was 225.3MB in the beginning and 379.5MB in the end (delta: -154.2MB). Peak memory consumption was 55.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 56]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 27 procedures, 295 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.7s, OverallIterations: 47, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 30.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14845 SdHoareTripleChecker+Valid, 26.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14665 mSDsluCounter, 50848 SdHoareTripleChecker+Invalid, 21.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37802 mSDsCounter, 6505 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48228 IncrementalHoareTripleChecker+Invalid, 54733 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6505 mSolverCounterUnsat, 13046 mSDtfsCounter, 48228 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1716 GetRequests, 1005 SyntacticMatches, 9 SemanticMatches, 702 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1609 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1085occurred in iteration=8, InterpolantAutomatonStates: 542, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 47 MinimizatonAttempts, 2092 StatesRemovedByMinimization, 44 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 3800 NumberOfCodeBlocks, 3800 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 3751 ConstructedInterpolants, 0 QuantifiedInterpolants, 14828 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2654 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 49 InterpolantComputations, 47 PerfectInterpolantSequences, 835/847 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-17 18:43:09,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...