/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 12:03:50,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 12:03:50,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 12:03:50,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 12:03:50,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 12:03:50,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 12:03:50,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 12:03:50,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 12:03:50,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 12:03:50,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 12:03:50,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 12:03:50,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 12:03:50,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 12:03:50,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 12:03:50,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 12:03:50,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 12:03:50,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 12:03:50,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 12:03:50,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 12:03:50,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 12:03:50,874 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 12:03:50,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 12:03:50,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 12:03:50,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 12:03:50,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 12:03:50,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 12:03:50,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 12:03:50,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 12:03:50,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 12:03:50,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 12:03:50,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 12:03:50,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 12:03:50,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 12:03:50,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 12:03:50,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 12:03:50,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 12:03:50,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 12:03:50,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 12:03:50,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 12:03:50,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 12:03:50,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 12:03:50,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 12:03:50,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 12:03:50,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 12:03:50,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 12:03:50,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 12:03:50,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 12:03:50,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 12:03:50,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 12:03:50,918 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 12:03:50,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 12:03:50,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 12:03:50,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 12:03:50,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 12:03:50,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 12:03:50,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 12:03:50,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 12:03:50,920 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 12:03:50,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 12:03:50,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 12:03:50,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 12:03:50,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 12:03:50,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 12:03:50,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 12:03:50,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 12:03:50,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 12:03:50,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 12:03:50,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 12:03:50,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 12:03:50,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 12:03:50,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 12:03:50,922 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 12:03:50,922 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 12:03:51,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 12:03:51,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 12:03:51,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 12:03:51,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 12:03:51,149 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 12:03:51,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-20 12:03:51,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae7477f6/46cbb23fd0c44e8397dadd539e86cf12/FLAG544f79fce [2022-03-20 12:03:51,634 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 12:03:51,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/diskperf_simpl1.cil.c [2022-03-20 12:03:51,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae7477f6/46cbb23fd0c44e8397dadd539e86cf12/FLAG544f79fce [2022-03-20 12:03:51,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bae7477f6/46cbb23fd0c44e8397dadd539e86cf12 [2022-03-20 12:03:51,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 12:03:51,668 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 12:03:51,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 12:03:51,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 12:03:51,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 12:03:51,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:03:51" (1/1) ... [2022-03-20 12:03:51,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5557599d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:51, skipping insertion in model container [2022-03-20 12:03:51,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:03:51" (1/1) ... [2022-03-20 12:03:51,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 12:03:51,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 12:03:51,913 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] [2022-03-20 12:03:52,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 12:03:52,050 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 12:03:52,081 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] [2022-03-20 12:03:52,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 12:03:52,137 INFO L208 MainTranslator]: Completed translation [2022-03-20 12:03:52,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52 WrapperNode [2022-03-20 12:03:52,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 12:03:52,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 12:03:52,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 12:03:52,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 12:03:52,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 12:03:52,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 12:03:52,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 12:03:52,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 12:03:52,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 12:03:52,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 12:03:52,231 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) [2022-03-20 12:03:52,233 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 [2022-03-20 12:03:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 12:03:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 12:03:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 12:03:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-20 12:03:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-20 12:03:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2022-03-20 12:03:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2022-03-20 12:03:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2022-03-20 12:03:52,258 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2022-03-20 12:03:52,259 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2022-03-20 12:03:52,259 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2022-03-20 12:03:52,259 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2022-03-20 12:03:52,259 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2022-03-20 12:03:52,259 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2022-03-20 12:03:52,259 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2022-03-20 12:03:52,259 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2022-03-20 12:03:52,265 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-20 12:03:52,266 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2022-03-20 12:03:52,267 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-20 12:03:52,268 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 12:03:52,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 12:03:52,388 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 12:03:52,390 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 12:03:52,435 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:52,534 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-03-20 12:03:52,534 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-03-20 12:03:52,541 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:52,571 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-20 12:03:52,571 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-20 12:03:52,586 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:52,597 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-20 12:03:52,597 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-20 12:03:52,601 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:52,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-20 12:03:52,608 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-20 12:03:52,802 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:52,836 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-20 12:03:52,836 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-20 12:03:52,861 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-20 12:03:52,873 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-20 12:03:52,874 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-20 12:03:52,900 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 12:03:52,916 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 12:03:52,917 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 12:03:52,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:03:52 BoogieIcfgContainer [2022-03-20 12:03:52,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 12:03:52,920 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 12:03:52,920 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 12:03:52,921 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 12:03:52,923 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:03:52" (1/1) ... [2022-03-20 12:03:52,924 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 12:03:52,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 12:03:52 BasicIcfg [2022-03-20 12:03:52,967 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 12:03:52,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 12:03:52,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 12:03:52,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 12:03:52,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 12:03:51" (1/4) ... [2022-03-20 12:03:52,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2670e33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:03:52, skipping insertion in model container [2022-03-20 12:03:52,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:03:52" (2/4) ... [2022-03-20 12:03:52,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2670e33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:03:52, skipping insertion in model container [2022-03-20 12:03:52,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:03:52" (3/4) ... [2022-03-20 12:03:52,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2670e33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 12:03:52, skipping insertion in model container [2022-03-20 12:03:52,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 12:03:52" (4/4) ... [2022-03-20 12:03:52,975 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.cqvasr [2022-03-20 12:03:52,980 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 12:03:52,980 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 12:03:53,019 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 12:03:53,024 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-03-20 12:03:53,024 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 12:03:53,038 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) [2022-03-20 12:03:53,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-20 12:03:53,042 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:53,043 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:03:53,043 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:53,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:53,046 INFO L85 PathProgramCache]: Analyzing trace with hash 13220813, now seen corresponding path program 1 times [2022-03-20 12:03:53,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:53,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524978802] [2022-03-20 12:03:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:53,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:53,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:53,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:53,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:53,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524978802] [2022-03-20 12:03:53,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524978802] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:53,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:53,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 12:03:53,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687543506] [2022-03-20 12:03:53,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:53,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 12:03:53,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 12:03:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 12:03:53,402 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) [2022-03-20 12:03:54,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:03:54,190 INFO L93 Difference]: Finished difference Result 576 states and 845 transitions. [2022-03-20 12:03:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:03:54,205 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 [2022-03-20 12:03:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:03:54,213 INFO L225 Difference]: With dead ends: 576 [2022-03-20 12:03:54,213 INFO L226 Difference]: Without dead ends: 326 [2022-03-20 12:03:54,222 INFO L912 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 [2022-03-20 12:03:54,227 INFO L913 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 [2022-03-20 12:03:54,228 INFO L914 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] [2022-03-20 12:03:54,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-20 12:03:54,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2022-03-20 12:03:54,301 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) [2022-03-20 12:03:54,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2022-03-20 12:03:54,304 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 20 [2022-03-20 12:03:54,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:03:54,305 INFO L478 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2022-03-20 12:03:54,305 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) [2022-03-20 12:03:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2022-03-20 12:03:54,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-20 12:03:54,306 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:54,306 INFO L499 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] [2022-03-20 12:03:54,307 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 12:03:54,307 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:54,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:54,307 INFO L85 PathProgramCache]: Analyzing trace with hash 690648180, now seen corresponding path program 1 times [2022-03-20 12:03:54,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:54,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846922428] [2022-03-20 12:03:54,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:54,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:54,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:54,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:54,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:03:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:54,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:54,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846922428] [2022-03-20 12:03:54,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846922428] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:54,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:54,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 12:03:54,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182346409] [2022-03-20 12:03:54,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:54,437 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 12:03:54,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:54,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 12:03:54,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 12:03:54,438 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) [2022-03-20 12:03:55,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:03:55,550 INFO L93 Difference]: Finished difference Result 690 states and 962 transitions. [2022-03-20 12:03:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:03:55,550 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 [2022-03-20 12:03:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:03:55,554 INFO L225 Difference]: With dead ends: 690 [2022-03-20 12:03:55,554 INFO L226 Difference]: Without dead ends: 507 [2022-03-20 12:03:55,555 INFO L912 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 [2022-03-20 12:03:55,556 INFO L913 BasicCegarLoop]: 490 mSDtfsCounter, 431 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:03:55,557 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 683 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 12:03:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-03-20 12:03:55,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2022-03-20 12:03:55,583 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) [2022-03-20 12:03:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2022-03-20 12:03:55,586 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 25 [2022-03-20 12:03:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:03:55,586 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2022-03-20 12:03:55,587 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) [2022-03-20 12:03:55,587 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2022-03-20 12:03:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-20 12:03:55,588 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:55,588 INFO L499 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] [2022-03-20 12:03:55,588 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 12:03:55,588 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:55,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash 543429165, now seen corresponding path program 1 times [2022-03-20 12:03:55,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:55,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824074852] [2022-03-20 12:03:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:55,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:55,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:55,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:03:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:55,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:55,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824074852] [2022-03-20 12:03:55,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824074852] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:55,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:55,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 12:03:55,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179947271] [2022-03-20 12:03:55,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:55,709 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 12:03:55,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:55,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 12:03:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 12:03:55,710 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) [2022-03-20 12:03:56,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:03:56,680 INFO L93 Difference]: Finished difference Result 1013 states and 1458 transitions. [2022-03-20 12:03:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:03:56,680 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 [2022-03-20 12:03:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:03:56,687 INFO L225 Difference]: With dead ends: 1013 [2022-03-20 12:03:56,687 INFO L226 Difference]: Without dead ends: 690 [2022-03-20 12:03:56,690 INFO L912 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 [2022-03-20 12:03:56,694 INFO L913 BasicCegarLoop]: 402 mSDtfsCounter, 390 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 12:03:56,696 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 587 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 12:03:56,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-20 12:03:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 618. [2022-03-20 12:03:56,728 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) [2022-03-20 12:03:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 888 transitions. [2022-03-20 12:03:56,732 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 888 transitions. Word has length 31 [2022-03-20 12:03:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:03:56,732 INFO L478 AbstractCegarLoop]: Abstraction has 618 states and 888 transitions. [2022-03-20 12:03:56,733 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) [2022-03-20 12:03:56,733 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 888 transitions. [2022-03-20 12:03:56,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-20 12:03:56,734 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:56,734 INFO L499 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] [2022-03-20 12:03:56,734 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 12:03:56,734 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:56,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:56,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1394943520, now seen corresponding path program 1 times [2022-03-20 12:03:56,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:56,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348148741] [2022-03-20 12:03:56,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:56,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:56,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:56,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:03:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:56,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:56,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348148741] [2022-03-20 12:03:56,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348148741] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:56,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:56,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 12:03:56,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97459244] [2022-03-20 12:03:56,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:56,838 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 12:03:56,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:56,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 12:03:56,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 12:03:56,839 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) [2022-03-20 12:03:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:03:57,422 INFO L93 Difference]: Finished difference Result 665 states and 952 transitions. [2022-03-20 12:03:57,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:03:57,423 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 [2022-03-20 12:03:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:03:57,426 INFO L225 Difference]: With dead ends: 665 [2022-03-20 12:03:57,426 INFO L226 Difference]: Without dead ends: 661 [2022-03-20 12:03:57,426 INFO L912 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 [2022-03-20 12:03:57,427 INFO L913 BasicCegarLoop]: 340 mSDtfsCounter, 224 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:03:57,427 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 589 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:03:57,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-03-20 12:03:57,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 628. [2022-03-20 12:03:57,448 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) [2022-03-20 12:03:57,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2022-03-20 12:03:57,451 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 36 [2022-03-20 12:03:57,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:03:57,452 INFO L478 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2022-03-20 12:03:57,452 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) [2022-03-20 12:03:57,452 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2022-03-20 12:03:57,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 12:03:57,453 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:57,453 INFO L499 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] [2022-03-20 12:03:57,453 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 12:03:57,454 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:57,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:57,454 INFO L85 PathProgramCache]: Analyzing trace with hash -455202915, now seen corresponding path program 1 times [2022-03-20 12:03:57,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:57,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031328544] [2022-03-20 12:03:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:57,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:57,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:57,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:57,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:03:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:57,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:03:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:57,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:03:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:57,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:57,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:57,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031328544] [2022-03-20 12:03:57,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031328544] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:57,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:57,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 12:03:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748698248] [2022-03-20 12:03:57,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:57,561 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 12:03:57,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:57,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 12:03:57,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:03:57,561 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) [2022-03-20 12:03:58,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:03:58,306 INFO L93 Difference]: Finished difference Result 710 states and 1007 transitions. [2022-03-20 12:03:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 12:03:58,307 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 [2022-03-20 12:03:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:03:58,310 INFO L225 Difference]: With dead ends: 710 [2022-03-20 12:03:58,310 INFO L226 Difference]: Without dead ends: 705 [2022-03-20 12:03:58,310 INFO L912 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 [2022-03-20 12:03:58,311 INFO L913 BasicCegarLoop]: 320 mSDtfsCounter, 182 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:03:58,311 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 710 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 12:03:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-20 12:03:58,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-20 12:03:58,344 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) [2022-03-20 12:03:58,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 937 transitions. [2022-03-20 12:03:58,347 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 937 transitions. Word has length 39 [2022-03-20 12:03:58,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:03:58,349 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 937 transitions. [2022-03-20 12:03:58,349 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) [2022-03-20 12:03:58,349 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 937 transitions. [2022-03-20 12:03:58,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 12:03:58,350 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:58,351 INFO L499 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] [2022-03-20 12:03:58,351 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 12:03:58,351 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:58,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash -454217859, now seen corresponding path program 1 times [2022-03-20 12:03:58,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:58,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774708944] [2022-03-20 12:03:58,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:58,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:03:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:03:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:03:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:58,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:58,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774708944] [2022-03-20 12:03:58,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774708944] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:58,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:58,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:03:58,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010614797] [2022-03-20 12:03:58,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:58,546 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:03:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:03:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:03:58,546 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) [2022-03-20 12:03:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:03:59,627 INFO L93 Difference]: Finished difference Result 713 states and 1009 transitions. [2022-03-20 12:03:59,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 12:03:59,628 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 [2022-03-20 12:03:59,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:03:59,630 INFO L225 Difference]: With dead ends: 713 [2022-03-20 12:03:59,631 INFO L226 Difference]: Without dead ends: 705 [2022-03-20 12:03:59,631 INFO L912 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 [2022-03-20 12:03:59,632 INFO L913 BasicCegarLoop]: 302 mSDtfsCounter, 599 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 12:03:59,632 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 705 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1087 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 12:03:59,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-20 12:03:59,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-20 12:03:59,678 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) [2022-03-20 12:03:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 936 transitions. [2022-03-20 12:03:59,681 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 936 transitions. Word has length 39 [2022-03-20 12:03:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:03:59,681 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 936 transitions. [2022-03-20 12:03:59,681 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) [2022-03-20 12:03:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 936 transitions. [2022-03-20 12:03:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-20 12:03:59,682 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:03:59,682 INFO L499 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] [2022-03-20 12:03:59,683 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-20 12:03:59,683 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:03:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:03:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1225775968, now seen corresponding path program 1 times [2022-03-20 12:03:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:03:59,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257655095] [2022-03-20 12:03:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:03:59,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:03:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:59,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:03:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:59,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:03:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:59,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:03:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:03:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:03:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:03:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:03:59,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:03:59,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257655095] [2022-03-20 12:03:59,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257655095] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:03:59,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:03:59,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:03:59,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498873531] [2022-03-20 12:03:59,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:03:59,841 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:03:59,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:03:59,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:03:59,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:03:59,841 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) [2022-03-20 12:04:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:01,093 INFO L93 Difference]: Finished difference Result 713 states and 1008 transitions. [2022-03-20 12:04:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 12:04:01,093 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 [2022-03-20 12:04:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:01,096 INFO L225 Difference]: With dead ends: 713 [2022-03-20 12:04:01,096 INFO L226 Difference]: Without dead ends: 705 [2022-03-20 12:04:01,097 INFO L912 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 [2022-03-20 12:04:01,097 INFO L913 BasicCegarLoop]: 303 mSDtfsCounter, 836 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:01,097 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [845 Valid, 859 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 12:04:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-03-20 12:04:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2022-03-20 12:04:01,124 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) [2022-03-20 12:04:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2022-03-20 12:04:01,127 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 40 [2022-03-20 12:04:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:01,128 INFO L478 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2022-03-20 12:04:01,128 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) [2022-03-20 12:04:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2022-03-20 12:04:01,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-20 12:04:01,129 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:01,129 INFO L499 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] [2022-03-20 12:04:01,129 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-20 12:04:01,129 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:01,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:01,129 INFO L85 PathProgramCache]: Analyzing trace with hash 636808681, now seen corresponding path program 1 times [2022-03-20 12:04:01,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:01,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848041527] [2022-03-20 12:04:01,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:01,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:01,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:04:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:01,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:01,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848041527] [2022-03-20 12:04:01,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848041527] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:01,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:01,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 12:04:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880231889] [2022-03-20 12:04:01,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:01,244 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 12:04:01,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:01,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 12:04:01,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:04:01,244 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) [2022-03-20 12:04:02,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:02,290 INFO L93 Difference]: Finished difference Result 1215 states and 1783 transitions. [2022-03-20 12:04:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 12:04:02,291 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 [2022-03-20 12:04:02,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:02,300 INFO L225 Difference]: With dead ends: 1215 [2022-03-20 12:04:02,300 INFO L226 Difference]: Without dead ends: 1186 [2022-03-20 12:04:02,302 INFO L912 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 [2022-03-20 12:04:02,303 INFO L913 BasicCegarLoop]: 392 mSDtfsCounter, 696 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:02,304 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 822 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 12:04:02,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-20 12:04:02,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2022-03-20 12:04:02,364 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) [2022-03-20 12:04:02,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1602 transitions. [2022-03-20 12:04:02,371 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1602 transitions. Word has length 41 [2022-03-20 12:04:02,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:02,371 INFO L478 AbstractCegarLoop]: Abstraction has 1085 states and 1602 transitions. [2022-03-20 12:04:02,371 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) [2022-03-20 12:04:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1602 transitions. [2022-03-20 12:04:02,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 12:04:02,372 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:02,372 INFO L499 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] [2022-03-20 12:04:02,372 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-20 12:04:02,372 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:02,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:02,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1732782333, now seen corresponding path program 1 times [2022-03-20 12:04:02,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:02,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127019648] [2022-03-20 12:04:02,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:02,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:02,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:02,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:02,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-20 12:04:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:02,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:02,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127019648] [2022-03-20 12:04:02,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127019648] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:02,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:02,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 12:04:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483883905] [2022-03-20 12:04:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:02,497 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 12:04:02,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:02,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 12:04:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:04:02,498 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) [2022-03-20 12:04:03,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:03,306 INFO L93 Difference]: Finished difference Result 1170 states and 1724 transitions. [2022-03-20 12:04:03,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 12:04:03,307 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 [2022-03-20 12:04:03,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:03,312 INFO L225 Difference]: With dead ends: 1170 [2022-03-20 12:04:03,312 INFO L226 Difference]: Without dead ends: 1148 [2022-03-20 12:04:03,312 INFO L912 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 [2022-03-20 12:04:03,313 INFO L913 BasicCegarLoop]: 327 mSDtfsCounter, 323 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:03,313 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 1132 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 12:04:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-03-20 12:04:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1078. [2022-03-20 12:04:03,359 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) [2022-03-20 12:04:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1593 transitions. [2022-03-20 12:04:03,364 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1593 transitions. Word has length 42 [2022-03-20 12:04:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:03,364 INFO L478 AbstractCegarLoop]: Abstraction has 1078 states and 1593 transitions. [2022-03-20 12:04:03,364 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) [2022-03-20 12:04:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1593 transitions. [2022-03-20 12:04:03,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 12:04:03,365 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:03,365 INFO L499 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] [2022-03-20 12:04:03,365 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-20 12:04:03,365 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:03,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:03,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1415168827, now seen corresponding path program 1 times [2022-03-20 12:04:03,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:03,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36655794] [2022-03-20 12:04:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:03,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:03,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:03,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:03,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36655794] [2022-03-20 12:04:03,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36655794] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:03,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:03,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 12:04:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373759172] [2022-03-20 12:04:03,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:03,462 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 12:04:03,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:03,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 12:04:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 12:04:03,462 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) [2022-03-20 12:04:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:04,003 INFO L93 Difference]: Finished difference Result 1507 states and 2275 transitions. [2022-03-20 12:04:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:04:04,004 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 [2022-03-20 12:04:04,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:04,007 INFO L225 Difference]: With dead ends: 1507 [2022-03-20 12:04:04,007 INFO L226 Difference]: Without dead ends: 599 [2022-03-20 12:04:04,011 INFO L912 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 [2022-03-20 12:04:04,011 INFO L913 BasicCegarLoop]: 281 mSDtfsCounter, 444 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:04,012 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 339 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 12:04:04,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-03-20 12:04:04,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 598. [2022-03-20 12:04:04,038 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) [2022-03-20 12:04:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 850 transitions. [2022-03-20 12:04:04,041 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 850 transitions. Word has length 45 [2022-03-20 12:04:04,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:04,041 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 850 transitions. [2022-03-20 12:04:04,041 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) [2022-03-20 12:04:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 850 transitions. [2022-03-20 12:04:04,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-20 12:04:04,042 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:04,042 INFO L499 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] [2022-03-20 12:04:04,042 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-20 12:04:04,042 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:04,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:04,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1870236117, now seen corresponding path program 1 times [2022-03-20 12:04:04,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:04,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345985263] [2022-03-20 12:04:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:04,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:04,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:04,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:04:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:04,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:04,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:04,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345985263] [2022-03-20 12:04:04,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345985263] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:04,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:04,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 12:04:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466803307] [2022-03-20 12:04:04,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:04,220 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 12:04:04,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 12:04:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-20 12:04:04,221 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) [2022-03-20 12:04:04,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:04,921 INFO L93 Difference]: Finished difference Result 633 states and 893 transitions. [2022-03-20 12:04:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:04,928 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 [2022-03-20 12:04:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:04,930 INFO L225 Difference]: With dead ends: 633 [2022-03-20 12:04:04,930 INFO L226 Difference]: Without dead ends: 608 [2022-03-20 12:04:04,931 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-20 12:04:04,931 INFO L913 BasicCegarLoop]: 291 mSDtfsCounter, 269 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:04,931 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 1154 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:04:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-03-20 12:04:04,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2022-03-20 12:04:04,956 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) [2022-03-20 12:04:04,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 845 transitions. [2022-03-20 12:04:04,959 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 845 transitions. Word has length 46 [2022-03-20 12:04:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:04,959 INFO L478 AbstractCegarLoop]: Abstraction has 596 states and 845 transitions. [2022-03-20 12:04:04,959 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) [2022-03-20 12:04:04,960 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 845 transitions. [2022-03-20 12:04:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-20 12:04:04,960 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:04,960 INFO L499 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] [2022-03-20 12:04:04,960 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-20 12:04:04,960 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:04,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:04,961 INFO L85 PathProgramCache]: Analyzing trace with hash -961233056, now seen corresponding path program 1 times [2022-03-20 12:04:04,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:04,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106633789] [2022-03-20 12:04:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:04,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:04:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:04:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:05,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:05,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106633789] [2022-03-20 12:04:05,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106633789] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:05,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:05,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 12:04:05,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536706037] [2022-03-20 12:04:05,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:05,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 12:04:05,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:05,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 12:04:05,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:04:05,111 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) [2022-03-20 12:04:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:05,844 INFO L93 Difference]: Finished difference Result 834 states and 1234 transitions. [2022-03-20 12:04:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 12:04:05,844 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 [2022-03-20 12:04:05,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:05,848 INFO L225 Difference]: With dead ends: 834 [2022-03-20 12:04:05,848 INFO L226 Difference]: Without dead ends: 826 [2022-03-20 12:04:05,848 INFO L912 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 [2022-03-20 12:04:05,849 INFO L913 BasicCegarLoop]: 324 mSDtfsCounter, 615 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:05,849 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 662 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:04:05,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-03-20 12:04:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 665. [2022-03-20 12:04:05,881 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) [2022-03-20 12:04:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 948 transitions. [2022-03-20 12:04:05,883 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 948 transitions. Word has length 46 [2022-03-20 12:04:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:05,884 INFO L478 AbstractCegarLoop]: Abstraction has 665 states and 948 transitions. [2022-03-20 12:04:05,884 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) [2022-03-20 12:04:05,884 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 948 transitions. [2022-03-20 12:04:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 12:04:05,884 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:05,884 INFO L499 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] [2022-03-20 12:04:05,884 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-20 12:04:05,885 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:05,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:05,885 INFO L85 PathProgramCache]: Analyzing trace with hash -91170375, now seen corresponding path program 1 times [2022-03-20 12:04:05,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:05,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7077810] [2022-03-20 12:04:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:05,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 12:04:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:05,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:05,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7077810] [2022-03-20 12:04:05,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7077810] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:05,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:05,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 12:04:05,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065788941] [2022-03-20 12:04:05,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:05,985 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 12:04:05,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:05,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 12:04:05,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:04:05,986 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) [2022-03-20 12:04:06,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:06,565 INFO L93 Difference]: Finished difference Result 739 states and 1021 transitions. [2022-03-20 12:04:06,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 12:04:06,565 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 [2022-03-20 12:04:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:06,567 INFO L225 Difference]: With dead ends: 739 [2022-03-20 12:04:06,567 INFO L226 Difference]: Without dead ends: 462 [2022-03-20 12:04:06,568 INFO L912 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 [2022-03-20 12:04:06,569 INFO L913 BasicCegarLoop]: 314 mSDtfsCounter, 471 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:06,569 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 650 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:04:06,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-03-20 12:04:06,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2022-03-20 12:04:06,593 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) [2022-03-20 12:04:06,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 578 transitions. [2022-03-20 12:04:06,594 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 578 transitions. Word has length 49 [2022-03-20 12:04:06,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:06,595 INFO L478 AbstractCegarLoop]: Abstraction has 441 states and 578 transitions. [2022-03-20 12:04:06,595 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) [2022-03-20 12:04:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 578 transitions. [2022-03-20 12:04:06,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 12:04:06,596 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:06,596 INFO L499 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] [2022-03-20 12:04:06,596 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-20 12:04:06,596 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash 298099852, now seen corresponding path program 1 times [2022-03-20 12:04:06,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:06,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857397057] [2022-03-20 12:04:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:06,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:06,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:06,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:04:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:06,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:04:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:06,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:06,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857397057] [2022-03-20 12:04:06,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857397057] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:06,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:06,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:04:06,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563216104] [2022-03-20 12:04:06,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:06,767 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:04:06,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:06,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:04:06,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:04:06,768 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) [2022-03-20 12:04:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:07,457 INFO L93 Difference]: Finished difference Result 457 states and 597 transitions. [2022-03-20 12:04:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 12:04:07,457 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 [2022-03-20 12:04:07,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:07,459 INFO L225 Difference]: With dead ends: 457 [2022-03-20 12:04:07,459 INFO L226 Difference]: Without dead ends: 453 [2022-03-20 12:04:07,459 INFO L912 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 [2022-03-20 12:04:07,460 INFO L913 BasicCegarLoop]: 284 mSDtfsCounter, 164 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:07,460 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 1464 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:04:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-03-20 12:04:07,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2022-03-20 12:04:07,482 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) [2022-03-20 12:04:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 589 transitions. [2022-03-20 12:04:07,483 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 589 transitions. Word has length 47 [2022-03-20 12:04:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:07,483 INFO L478 AbstractCegarLoop]: Abstraction has 449 states and 589 transitions. [2022-03-20 12:04:07,483 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) [2022-03-20 12:04:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 589 transitions. [2022-03-20 12:04:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 12:04:07,484 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:07,484 INFO L499 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] [2022-03-20 12:04:07,484 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-20 12:04:07,484 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash 298068108, now seen corresponding path program 1 times [2022-03-20 12:04:07,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:07,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336572304] [2022-03-20 12:04:07,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:07,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:07,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:07,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:07,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:07,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:04:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:04:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:07,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:07,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336572304] [2022-03-20 12:04:07,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336572304] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:07,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:07,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:04:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588707171] [2022-03-20 12:04:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:07,642 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:04:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:04:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:04:07,643 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) [2022-03-20 12:04:08,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:08,241 INFO L93 Difference]: Finished difference Result 780 states and 1069 transitions. [2022-03-20 12:04:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:04:08,241 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 [2022-03-20 12:04:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:08,243 INFO L225 Difference]: With dead ends: 780 [2022-03-20 12:04:08,243 INFO L226 Difference]: Without dead ends: 472 [2022-03-20 12:04:08,244 INFO L912 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 [2022-03-20 12:04:08,245 INFO L913 BasicCegarLoop]: 286 mSDtfsCounter, 264 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:08,245 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 1475 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:04:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-03-20 12:04:08,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2022-03-20 12:04:08,269 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) [2022-03-20 12:04:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2022-03-20 12:04:08,270 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 47 [2022-03-20 12:04:08,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:08,270 INFO L478 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2022-03-20 12:04:08,270 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) [2022-03-20 12:04:08,270 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2022-03-20 12:04:08,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-20 12:04:08,271 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:08,271 INFO L499 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] [2022-03-20 12:04:08,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-20 12:04:08,271 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:08,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:08,271 INFO L85 PathProgramCache]: Analyzing trace with hash -309998534, now seen corresponding path program 1 times [2022-03-20 12:04:08,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:08,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307526107] [2022-03-20 12:04:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:08,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:08,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:04:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:04:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:08,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:08,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307526107] [2022-03-20 12:04:08,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307526107] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:08,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:08,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 12:04:08,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881719778] [2022-03-20 12:04:08,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:08,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 12:04:08,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:08,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 12:04:08,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:04:08,410 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) [2022-03-20 12:04:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:09,528 INFO L93 Difference]: Finished difference Result 594 states and 812 transitions. [2022-03-20 12:04:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-20 12:04:09,529 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 [2022-03-20 12:04:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:09,531 INFO L225 Difference]: With dead ends: 594 [2022-03-20 12:04:09,531 INFO L226 Difference]: Without dead ends: 575 [2022-03-20 12:04:09,531 INFO L912 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 [2022-03-20 12:04:09,532 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 1027 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:09,532 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 775 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-20 12:04:09,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-03-20 12:04:09,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 444. [2022-03-20 12:04:09,558 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) [2022-03-20 12:04:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 583 transitions. [2022-03-20 12:04:09,559 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 583 transitions. Word has length 48 [2022-03-20 12:04:09,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:09,560 INFO L478 AbstractCegarLoop]: Abstraction has 444 states and 583 transitions. [2022-03-20 12:04:09,560 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) [2022-03-20 12:04:09,560 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 583 transitions. [2022-03-20 12:04:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-20 12:04:09,561 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:09,561 INFO L499 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] [2022-03-20 12:04:09,561 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-20 12:04:09,561 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:09,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:09,561 INFO L85 PathProgramCache]: Analyzing trace with hash 328516868, now seen corresponding path program 1 times [2022-03-20 12:04:09,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:09,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897653496] [2022-03-20 12:04:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:09,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:09,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:09,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 12:04:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:09,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:09,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897653496] [2022-03-20 12:04:09,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897653496] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:09,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:09,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:04:09,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218969154] [2022-03-20 12:04:09,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:09,689 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:04:09,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:09,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:04:09,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:04:09,690 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) [2022-03-20 12:04:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:10,430 INFO L93 Difference]: Finished difference Result 458 states and 599 transitions. [2022-03-20 12:04:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 12:04:10,430 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 [2022-03-20 12:04:10,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:10,432 INFO L225 Difference]: With dead ends: 458 [2022-03-20 12:04:10,432 INFO L226 Difference]: Without dead ends: 427 [2022-03-20 12:04:10,432 INFO L912 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 [2022-03-20 12:04:10,433 INFO L913 BasicCegarLoop]: 289 mSDtfsCounter, 89 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:10,433 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 1517 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 12:04:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-03-20 12:04:10,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2022-03-20 12:04:10,456 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) [2022-03-20 12:04:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 562 transitions. [2022-03-20 12:04:10,457 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 562 transitions. Word has length 49 [2022-03-20 12:04:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:10,457 INFO L478 AbstractCegarLoop]: Abstraction has 427 states and 562 transitions. [2022-03-20 12:04:10,457 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) [2022-03-20 12:04:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 562 transitions. [2022-03-20 12:04:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 12:04:10,458 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:10,458 INFO L499 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] [2022-03-20 12:04:10,458 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-20 12:04:10,458 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:10,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:10,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1720991068, now seen corresponding path program 1 times [2022-03-20 12:04:10,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:10,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313636890] [2022-03-20 12:04:10,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:10,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 12:04:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-20 12:04:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:10,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:10,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313636890] [2022-03-20 12:04:10,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313636890] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:10,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:10,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 12:04:10,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173320181] [2022-03-20 12:04:10,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:10,599 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 12:04:10,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:10,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 12:04:10,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-20 12:04:10,600 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) [2022-03-20 12:04:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:11,263 INFO L93 Difference]: Finished difference Result 456 states and 600 transitions. [2022-03-20 12:04:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 12:04:11,263 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 [2022-03-20 12:04:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:11,265 INFO L225 Difference]: With dead ends: 456 [2022-03-20 12:04:11,265 INFO L226 Difference]: Without dead ends: 423 [2022-03-20 12:04:11,265 INFO L912 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 [2022-03-20 12:04:11,266 INFO L913 BasicCegarLoop]: 271 mSDtfsCounter, 244 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 1208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:11,266 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1123 Invalid, 1208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:04:11,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-03-20 12:04:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 409. [2022-03-20 12:04:11,288 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) [2022-03-20 12:04:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 542 transitions. [2022-03-20 12:04:11,289 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 542 transitions. Word has length 50 [2022-03-20 12:04:11,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:11,289 INFO L478 AbstractCegarLoop]: Abstraction has 409 states and 542 transitions. [2022-03-20 12:04:11,290 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) [2022-03-20 12:04:11,290 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 542 transitions. [2022-03-20 12:04:11,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-20 12:04:11,290 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:11,290 INFO L499 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] [2022-03-20 12:04:11,290 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-20 12:04:11,290 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:11,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:11,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1090499838, now seen corresponding path program 1 times [2022-03-20 12:04:11,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:11,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316820814] [2022-03-20 12:04:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:11,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 12:04:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:11,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:11,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316820814] [2022-03-20 12:04:11,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316820814] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:11,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:11,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 12:04:11,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201142015] [2022-03-20 12:04:11,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:11,412 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 12:04:11,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:11,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 12:04:11,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-20 12:04:11,413 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) [2022-03-20 12:04:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:13,117 INFO L93 Difference]: Finished difference Result 634 states and 905 transitions. [2022-03-20 12:04:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 12:04:13,117 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 [2022-03-20 12:04:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:13,119 INFO L225 Difference]: With dead ends: 634 [2022-03-20 12:04:13,120 INFO L226 Difference]: Without dead ends: 600 [2022-03-20 12:04:13,120 INFO L912 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 [2022-03-20 12:04:13,120 INFO L913 BasicCegarLoop]: 421 mSDtfsCounter, 618 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:13,120 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 1412 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-20 12:04:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-03-20 12:04:13,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 534. [2022-03-20 12:04:13,150 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) [2022-03-20 12:04:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 769 transitions. [2022-03-20 12:04:13,151 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 769 transitions. Word has length 50 [2022-03-20 12:04:13,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:13,151 INFO L478 AbstractCegarLoop]: Abstraction has 534 states and 769 transitions. [2022-03-20 12:04:13,152 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) [2022-03-20 12:04:13,152 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 769 transitions. [2022-03-20 12:04:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 12:04:13,152 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:13,152 INFO L499 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] [2022-03-20 12:04:13,152 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-20 12:04:13,152 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:13,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1506717387, now seen corresponding path program 1 times [2022-03-20 12:04:13,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:13,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227732932] [2022-03-20 12:04:13,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:13,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 12:04:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:13,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:13,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227732932] [2022-03-20 12:04:13,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227732932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:13,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:13,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 12:04:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826491258] [2022-03-20 12:04:13,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:13,277 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 12:04:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:13,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 12:04:13,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-20 12:04:13,277 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) [2022-03-20 12:04:13,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:13,981 INFO L93 Difference]: Finished difference Result 587 states and 833 transitions. [2022-03-20 12:04:13,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 12:04:13,982 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 [2022-03-20 12:04:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:13,984 INFO L225 Difference]: With dead ends: 587 [2022-03-20 12:04:13,984 INFO L226 Difference]: Without dead ends: 555 [2022-03-20 12:04:13,984 INFO L912 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 [2022-03-20 12:04:13,985 INFO L913 BasicCegarLoop]: 240 mSDtfsCounter, 349 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:13,985 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 742 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:04:13,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-03-20 12:04:14,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 537. [2022-03-20 12:04:14,015 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) [2022-03-20 12:04:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 773 transitions. [2022-03-20 12:04:14,017 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 773 transitions. Word has length 51 [2022-03-20 12:04:14,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:14,017 INFO L478 AbstractCegarLoop]: Abstraction has 537 states and 773 transitions. [2022-03-20 12:04:14,017 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) [2022-03-20 12:04:14,017 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 773 transitions. [2022-03-20 12:04:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 12:04:14,017 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:14,017 INFO L499 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] [2022-03-20 12:04:14,017 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-20 12:04:14,018 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:14,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:14,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1791177556, now seen corresponding path program 1 times [2022-03-20 12:04:14,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:14,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834025612] [2022-03-20 12:04:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:14,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:14,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 12:04:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:14,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:14,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:14,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:14,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834025612] [2022-03-20 12:04:14,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834025612] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:14,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:14,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:04:14,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677241934] [2022-03-20 12:04:14,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:14,152 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:04:14,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:14,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:04:14,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:04:14,153 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) [2022-03-20 12:04:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:14,902 INFO L93 Difference]: Finished difference Result 670 states and 993 transitions. [2022-03-20 12:04:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:14,902 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 [2022-03-20 12:04:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:14,904 INFO L225 Difference]: With dead ends: 670 [2022-03-20 12:04:14,904 INFO L226 Difference]: Without dead ends: 624 [2022-03-20 12:04:14,905 INFO L912 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 [2022-03-20 12:04:14,906 INFO L913 BasicCegarLoop]: 272 mSDtfsCounter, 536 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:14,906 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 859 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:04:14,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-03-20 12:04:14,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 529. [2022-03-20 12:04:14,940 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) [2022-03-20 12:04:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 759 transitions. [2022-03-20 12:04:14,941 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 759 transitions. Word has length 51 [2022-03-20 12:04:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:14,942 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 759 transitions. [2022-03-20 12:04:14,942 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) [2022-03-20 12:04:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 759 transitions. [2022-03-20 12:04:14,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 12:04:14,943 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:14,943 INFO L499 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] [2022-03-20 12:04:14,943 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-20 12:04:14,943 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:14,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash -50366668, now seen corresponding path program 1 times [2022-03-20 12:04:14,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:14,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433269767] [2022-03-20 12:04:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:14,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 12:04:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:15,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433269767] [2022-03-20 12:04:15,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433269767] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:15,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:15,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 12:04:15,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378753063] [2022-03-20 12:04:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:15,038 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 12:04:15,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 12:04:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-20 12:04:15,039 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) [2022-03-20 12:04:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:16,038 INFO L93 Difference]: Finished difference Result 714 states and 1095 transitions. [2022-03-20 12:04:16,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 12:04:16,040 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 [2022-03-20 12:04:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:16,043 INFO L225 Difference]: With dead ends: 714 [2022-03-20 12:04:16,043 INFO L226 Difference]: Without dead ends: 701 [2022-03-20 12:04:16,043 INFO L912 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 [2022-03-20 12:04:16,044 INFO L913 BasicCegarLoop]: 392 mSDtfsCounter, 241 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:16,044 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 766 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 12:04:16,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-03-20 12:04:16,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 524. [2022-03-20 12:04:16,078 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) [2022-03-20 12:04:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 751 transitions. [2022-03-20 12:04:16,080 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 751 transitions. Word has length 51 [2022-03-20 12:04:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:16,080 INFO L478 AbstractCegarLoop]: Abstraction has 524 states and 751 transitions. [2022-03-20 12:04:16,080 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) [2022-03-20 12:04:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 751 transitions. [2022-03-20 12:04:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 12:04:16,081 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:16,081 INFO L499 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] [2022-03-20 12:04:16,081 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-20 12:04:16,081 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:16,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1529813192, now seen corresponding path program 1 times [2022-03-20 12:04:16,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:16,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815358629] [2022-03-20 12:04:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:16,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:16,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:16,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:16,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 12:04:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:16,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:16,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:16,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815358629] [2022-03-20 12:04:16,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815358629] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:16,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:16,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:04:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369155643] [2022-03-20 12:04:16,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:16,200 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:04:16,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:04:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:04:16,201 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) [2022-03-20 12:04:16,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:16,886 INFO L93 Difference]: Finished difference Result 547 states and 781 transitions. [2022-03-20 12:04:16,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:04:16,887 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 [2022-03-20 12:04:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:16,889 INFO L225 Difference]: With dead ends: 547 [2022-03-20 12:04:16,889 INFO L226 Difference]: Without dead ends: 543 [2022-03-20 12:04:16,889 INFO L912 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 [2022-03-20 12:04:16,890 INFO L913 BasicCegarLoop]: 253 mSDtfsCounter, 76 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:16,890 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1340 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:04:16,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-03-20 12:04:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2022-03-20 12:04:16,921 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) [2022-03-20 12:04:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 760 transitions. [2022-03-20 12:04:16,923 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 760 transitions. Word has length 52 [2022-03-20 12:04:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:16,923 INFO L478 AbstractCegarLoop]: Abstraction has 531 states and 760 transitions. [2022-03-20 12:04:16,923 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) [2022-03-20 12:04:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 760 transitions. [2022-03-20 12:04:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 12:04:16,923 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:16,923 INFO L499 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] [2022-03-20 12:04:16,924 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-20 12:04:16,924 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:16,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:16,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1529844936, now seen corresponding path program 1 times [2022-03-20 12:04:16,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:16,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811893197] [2022-03-20 12:04:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:16,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:16,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:16,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 12:04:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:17,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:17,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811893197] [2022-03-20 12:04:17,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811893197] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:17,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:17,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:04:17,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051354959] [2022-03-20 12:04:17,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:17,059 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:04:17,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:04:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:04:17,060 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) [2022-03-20 12:04:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:17,662 INFO L93 Difference]: Finished difference Result 562 states and 797 transitions. [2022-03-20 12:04:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 12:04:17,663 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 [2022-03-20 12:04:17,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:17,665 INFO L225 Difference]: With dead ends: 562 [2022-03-20 12:04:17,665 INFO L226 Difference]: Without dead ends: 538 [2022-03-20 12:04:17,665 INFO L912 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 [2022-03-20 12:04:17,666 INFO L913 BasicCegarLoop]: 255 mSDtfsCounter, 138 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:17,666 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1429 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:04:17,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-03-20 12:04:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2022-03-20 12:04:17,710 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) [2022-03-20 12:04:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 758 transitions. [2022-03-20 12:04:17,712 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 758 transitions. Word has length 52 [2022-03-20 12:04:17,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:17,712 INFO L478 AbstractCegarLoop]: Abstraction has 530 states and 758 transitions. [2022-03-20 12:04:17,712 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) [2022-03-20 12:04:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 758 transitions. [2022-03-20 12:04:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 12:04:17,712 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:17,712 INFO L499 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] [2022-03-20 12:04:17,713 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-20 12:04:17,713 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:17,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1874017512, now seen corresponding path program 1 times [2022-03-20 12:04:17,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:17,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115791704] [2022-03-20 12:04:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:17,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-20 12:04:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 12:04:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:17,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:17,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115791704] [2022-03-20 12:04:17,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115791704] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:17,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:17,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 12:04:17,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652602290] [2022-03-20 12:04:17,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:17,855 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 12:04:17,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:17,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 12:04:17,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-20 12:04:17,856 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) [2022-03-20 12:04:18,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:18,344 INFO L93 Difference]: Finished difference Result 955 states and 1439 transitions. [2022-03-20 12:04:18,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:04:18,345 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 [2022-03-20 12:04:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:18,347 INFO L225 Difference]: With dead ends: 955 [2022-03-20 12:04:18,347 INFO L226 Difference]: Without dead ends: 549 [2022-03-20 12:04:18,349 INFO L912 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 [2022-03-20 12:04:18,349 INFO L913 BasicCegarLoop]: 268 mSDtfsCounter, 188 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:18,350 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 704 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 12:04:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-03-20 12:04:18,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 529. [2022-03-20 12:04:18,382 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) [2022-03-20 12:04:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 754 transitions. [2022-03-20 12:04:18,383 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 754 transitions. Word has length 58 [2022-03-20 12:04:18,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:18,384 INFO L478 AbstractCegarLoop]: Abstraction has 529 states and 754 transitions. [2022-03-20 12:04:18,384 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) [2022-03-20 12:04:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 754 transitions. [2022-03-20 12:04:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-20 12:04:18,384 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:18,384 INFO L499 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] [2022-03-20 12:04:18,384 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-20 12:04:18,384 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2132872221, now seen corresponding path program 1 times [2022-03-20 12:04:18,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:18,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056931591] [2022-03-20 12:04:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:18,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-03-20 12:04:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:18,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:18,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056931591] [2022-03-20 12:04:18,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056931591] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:18,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:18,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 12:04:18,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501378556] [2022-03-20 12:04:18,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:18,502 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 12:04:18,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:18,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 12:04:18,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-20 12:04:18,503 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) [2022-03-20 12:04:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:19,317 INFO L93 Difference]: Finished difference Result 675 states and 1000 transitions. [2022-03-20 12:04:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:04:19,318 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 [2022-03-20 12:04:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:19,320 INFO L225 Difference]: With dead ends: 675 [2022-03-20 12:04:19,320 INFO L226 Difference]: Without dead ends: 639 [2022-03-20 12:04:19,321 INFO L912 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 [2022-03-20 12:04:19,321 INFO L913 BasicCegarLoop]: 336 mSDtfsCounter, 683 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:19,322 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 736 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:04:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-03-20 12:04:19,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 560. [2022-03-20 12:04:19,359 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) [2022-03-20 12:04:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 824 transitions. [2022-03-20 12:04:19,361 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 824 transitions. Word has length 53 [2022-03-20 12:04:19,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:19,361 INFO L478 AbstractCegarLoop]: Abstraction has 560 states and 824 transitions. [2022-03-20 12:04:19,361 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) [2022-03-20 12:04:19,361 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 824 transitions. [2022-03-20 12:04:19,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 12:04:19,362 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:19,362 INFO L499 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] [2022-03-20 12:04:19,362 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-20 12:04:19,362 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash 983025775, now seen corresponding path program 1 times [2022-03-20 12:04:19,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:19,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968250258] [2022-03-20 12:04:19,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:19,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 12:04:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:19,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:19,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:19,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968250258] [2022-03-20 12:04:19,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968250258] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:19,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:19,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:04:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240532339] [2022-03-20 12:04:19,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:19,592 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:04:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:04:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:04:19,593 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) [2022-03-20 12:04:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:20,190 INFO L93 Difference]: Finished difference Result 856 states and 1268 transitions. [2022-03-20 12:04:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 12:04:20,191 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 [2022-03-20 12:04:20,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:20,192 INFO L225 Difference]: With dead ends: 856 [2022-03-20 12:04:20,192 INFO L226 Difference]: Without dead ends: 390 [2022-03-20 12:04:20,194 INFO L912 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 [2022-03-20 12:04:20,195 INFO L913 BasicCegarLoop]: 251 mSDtfsCounter, 164 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:20,195 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 1423 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:04:20,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-03-20 12:04:20,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 338. [2022-03-20 12:04:20,220 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) [2022-03-20 12:04:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 442 transitions. [2022-03-20 12:04:20,221 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 442 transitions. Word has length 62 [2022-03-20 12:04:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:20,221 INFO L478 AbstractCegarLoop]: Abstraction has 338 states and 442 transitions. [2022-03-20 12:04:20,221 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) [2022-03-20 12:04:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 442 transitions. [2022-03-20 12:04:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-20 12:04:20,222 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:20,222 INFO L499 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] [2022-03-20 12:04:20,222 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-20 12:04:20,222 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1006609107, now seen corresponding path program 1 times [2022-03-20 12:04:20,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:20,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185554095] [2022-03-20 12:04:20,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:20,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:20,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185554095] [2022-03-20 12:04:20,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185554095] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:20,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:20,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 12:04:20,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986971172] [2022-03-20 12:04:20,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:20,372 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 12:04:20,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:20,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 12:04:20,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:20,373 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) [2022-03-20 12:04:20,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:20,834 INFO L93 Difference]: Finished difference Result 346 states and 454 transitions. [2022-03-20 12:04:20,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:04:20,834 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 [2022-03-20 12:04:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:20,835 INFO L225 Difference]: With dead ends: 346 [2022-03-20 12:04:20,835 INFO L226 Difference]: Without dead ends: 304 [2022-03-20 12:04:20,836 INFO L912 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 [2022-03-20 12:04:20,836 INFO L913 BasicCegarLoop]: 227 mSDtfsCounter, 108 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:20,836 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1448 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 12:04:20,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-03-20 12:04:20,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2022-03-20 12:04:20,857 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) [2022-03-20 12:04:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 398 transitions. [2022-03-20 12:04:20,858 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 398 transitions. Word has length 58 [2022-03-20 12:04:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:20,858 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 398 transitions. [2022-03-20 12:04:20,858 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) [2022-03-20 12:04:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 398 transitions. [2022-03-20 12:04:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-20 12:04:20,859 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:20,859 INFO L499 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] [2022-03-20 12:04:20,859 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-20 12:04:20,859 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2058307499, now seen corresponding path program 1 times [2022-03-20 12:04:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:20,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249816603] [2022-03-20 12:04:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 12:04:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:21,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:21,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249816603] [2022-03-20 12:04:21,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249816603] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:21,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:21,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:04:21,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523182422] [2022-03-20 12:04:21,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:21,022 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:04:21,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:21,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:04:21,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:04:21,023 INFO L87 Difference]: Start difference. First operand 298 states and 398 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 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) [2022-03-20 12:04:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:21,560 INFO L93 Difference]: Finished difference Result 576 states and 798 transitions. [2022-03-20 12:04:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 12:04:21,560 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 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 67 [2022-03-20 12:04:21,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:21,562 INFO L225 Difference]: With dead ends: 576 [2022-03-20 12:04:21,562 INFO L226 Difference]: Without dead ends: 316 [2022-03-20 12:04:21,563 INFO L912 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 [2022-03-20 12:04:21,563 INFO L913 BasicCegarLoop]: 211 mSDtfsCounter, 287 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:21,564 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 782 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 12:04:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-20 12:04:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2022-03-20 12:04:21,590 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) [2022-03-20 12:04:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 396 transitions. [2022-03-20 12:04:21,590 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 396 transitions. Word has length 67 [2022-03-20 12:04:21,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:21,591 INFO L478 AbstractCegarLoop]: Abstraction has 298 states and 396 transitions. [2022-03-20 12:04:21,591 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 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) [2022-03-20 12:04:21,591 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 396 transitions. [2022-03-20 12:04:21,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 12:04:21,592 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:21,593 INFO L499 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] [2022-03-20 12:04:21,593 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-20 12:04:21,593 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:21,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1216763617, now seen corresponding path program 1 times [2022-03-20 12:04:21,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:21,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236389377] [2022-03-20 12:04:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:21,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-03-20 12:04:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:21,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:21,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236389377] [2022-03-20 12:04:21,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236389377] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:21,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:21,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:04:21,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994344755] [2022-03-20 12:04:21,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:21,721 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:04:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:04:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:04:21,722 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) [2022-03-20 12:04:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:22,037 INFO L93 Difference]: Finished difference Result 591 states and 822 transitions. [2022-03-20 12:04:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:04:22,037 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 [2022-03-20 12:04:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:22,039 INFO L225 Difference]: With dead ends: 591 [2022-03-20 12:04:22,039 INFO L226 Difference]: Without dead ends: 330 [2022-03-20 12:04:22,040 INFO L912 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 [2022-03-20 12:04:22,041 INFO L913 BasicCegarLoop]: 225 mSDtfsCounter, 155 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:22,041 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1096 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 12:04:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-03-20 12:04:22,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 303. [2022-03-20 12:04:22,075 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) [2022-03-20 12:04:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 409 transitions. [2022-03-20 12:04:22,076 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 409 transitions. Word has length 68 [2022-03-20 12:04:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:22,076 INFO L478 AbstractCegarLoop]: Abstraction has 303 states and 409 transitions. [2022-03-20 12:04:22,077 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) [2022-03-20 12:04:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 409 transitions. [2022-03-20 12:04:22,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-20 12:04:22,078 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:22,078 INFO L499 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] [2022-03-20 12:04:22,078 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-20 12:04:22,078 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:22,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1023463232, now seen corresponding path program 1 times [2022-03-20 12:04:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:22,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278610751] [2022-03-20 12:04:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:22,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 12:04:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:22,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:22,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278610751] [2022-03-20 12:04:22,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278610751] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:22,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:22,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 12:04:22,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898855398] [2022-03-20 12:04:22,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:22,184 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 12:04:22,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 12:04:22,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-20 12:04:22,185 INFO L87 Difference]: Start difference. First operand 303 states and 409 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-03-20 12:04:22,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:22,514 INFO L93 Difference]: Finished difference Result 477 states and 678 transitions. [2022-03-20 12:04:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:04:22,514 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), 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 70 [2022-03-20 12:04:22,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:22,516 INFO L225 Difference]: With dead ends: 477 [2022-03-20 12:04:22,516 INFO L226 Difference]: Without dead ends: 474 [2022-03-20 12:04:22,516 INFO L912 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 [2022-03-20 12:04:22,517 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 277 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:22,517 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 793 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 12:04:22,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-03-20 12:04:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 307. [2022-03-20 12:04:22,542 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) [2022-03-20 12:04:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 415 transitions. [2022-03-20 12:04:22,543 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 415 transitions. Word has length 70 [2022-03-20 12:04:22,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:22,543 INFO L478 AbstractCegarLoop]: Abstraction has 307 states and 415 transitions. [2022-03-20 12:04:22,543 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), 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) [2022-03-20 12:04:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 415 transitions. [2022-03-20 12:04:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-20 12:04:22,543 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:22,543 INFO L499 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] [2022-03-20 12:04:22,544 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-20 12:04:22,544 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:22,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1693422670, now seen corresponding path program 1 times [2022-03-20 12:04:22,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:22,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443663626] [2022-03-20 12:04:22,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:22,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-03-20 12:04:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:22,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443663626] [2022-03-20 12:04:22,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443663626] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:22,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:22,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 12:04:22,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081327268] [2022-03-20 12:04:22,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:22,654 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 12:04:22,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:22,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 12:04:22,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-20 12:04:22,655 INFO L87 Difference]: Start difference. First operand 307 states and 415 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-03-20 12:04:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:23,096 INFO L93 Difference]: Finished difference Result 793 states and 1161 transitions. [2022-03-20 12:04:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:04:23,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 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 71 [2022-03-20 12:04:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:23,099 INFO L225 Difference]: With dead ends: 793 [2022-03-20 12:04:23,099 INFO L226 Difference]: Without dead ends: 529 [2022-03-20 12:04:23,100 INFO L912 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 [2022-03-20 12:04:23,101 INFO L913 BasicCegarLoop]: 253 mSDtfsCounter, 373 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:23,101 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 743 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 12:04:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-03-20 12:04:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 490. [2022-03-20 12:04:23,135 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) [2022-03-20 12:04:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2022-03-20 12:04:23,136 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 71 [2022-03-20 12:04:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:23,137 INFO L478 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2022-03-20 12:04:23,137 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-03-20 12:04:23,137 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2022-03-20 12:04:23,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-20 12:04:23,137 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:23,137 INFO L499 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] [2022-03-20 12:04:23,137 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-20 12:04:23,137 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:23,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2035760571, now seen corresponding path program 1 times [2022-03-20 12:04:23,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:23,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706211115] [2022-03-20 12:04:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:23,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 12:04:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:23,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:23,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706211115] [2022-03-20 12:04:23,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706211115] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:23,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:23,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 12:04:23,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86244490] [2022-03-20 12:04:23,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:23,297 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 12:04:23,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:23,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 12:04:23,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-20 12:04:23,297 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) [2022-03-20 12:04:23,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:23,840 INFO L93 Difference]: Finished difference Result 942 states and 1393 transitions. [2022-03-20 12:04:23,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 12:04:23,841 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 [2022-03-20 12:04:23,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:23,843 INFO L225 Difference]: With dead ends: 942 [2022-03-20 12:04:23,843 INFO L226 Difference]: Without dead ends: 493 [2022-03-20 12:04:23,845 INFO L912 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 [2022-03-20 12:04:23,845 INFO L913 BasicCegarLoop]: 238 mSDtfsCounter, 96 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:23,845 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1304 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:04:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-03-20 12:04:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 484. [2022-03-20 12:04:23,896 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) [2022-03-20 12:04:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 687 transitions. [2022-03-20 12:04:23,898 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 687 transitions. Word has length 72 [2022-03-20 12:04:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:23,898 INFO L478 AbstractCegarLoop]: Abstraction has 484 states and 687 transitions. [2022-03-20 12:04:23,898 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) [2022-03-20 12:04:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 687 transitions. [2022-03-20 12:04:23,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-20 12:04:23,899 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:23,899 INFO L499 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] [2022-03-20 12:04:23,899 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-20 12:04:23,899 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:23,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1777696599, now seen corresponding path program 1 times [2022-03-20 12:04:23,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:23,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119752961] [2022-03-20 12:04:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:23,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:23,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-20 12:04:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 12:04:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:24,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119752961] [2022-03-20 12:04:24,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119752961] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:24,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:24,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 12:04:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721946141] [2022-03-20 12:04:24,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:24,041 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 12:04:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 12:04:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-20 12:04:24,041 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) [2022-03-20 12:04:24,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:24,620 INFO L93 Difference]: Finished difference Result 869 states and 1255 transitions. [2022-03-20 12:04:24,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:24,620 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 [2022-03-20 12:04:24,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:24,622 INFO L225 Difference]: With dead ends: 869 [2022-03-20 12:04:24,622 INFO L226 Difference]: Without dead ends: 450 [2022-03-20 12:04:24,624 INFO L912 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 [2022-03-20 12:04:24,624 INFO L913 BasicCegarLoop]: 317 mSDtfsCounter, 232 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:24,624 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 999 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 12:04:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-03-20 12:04:24,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2022-03-20 12:04:24,655 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) [2022-03-20 12:04:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 604 transitions. [2022-03-20 12:04:24,656 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 604 transitions. Word has length 83 [2022-03-20 12:04:24,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:24,657 INFO L478 AbstractCegarLoop]: Abstraction has 436 states and 604 transitions. [2022-03-20 12:04:24,657 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) [2022-03-20 12:04:24,657 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 604 transitions. [2022-03-20 12:04:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-03-20 12:04:24,657 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:24,657 INFO L499 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] [2022-03-20 12:04:24,658 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-20 12:04:24,658 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:24,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:24,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1836701912, now seen corresponding path program 1 times [2022-03-20 12:04:24,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:24,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750393069] [2022-03-20 12:04:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:24,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:24,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-20 12:04:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:25,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:25,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750393069] [2022-03-20 12:04:25,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750393069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:25,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:25,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-20 12:04:25,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483161091] [2022-03-20 12:04:25,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:25,010 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 12:04:25,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:25,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 12:04:25,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-20 12:04:25,011 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) [2022-03-20 12:04:25,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:25,603 INFO L93 Difference]: Finished difference Result 486 states and 681 transitions. [2022-03-20 12:04:25,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 12:04:25,604 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 [2022-03-20 12:04:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:25,606 INFO L225 Difference]: With dead ends: 486 [2022-03-20 12:04:25,606 INFO L226 Difference]: Without dead ends: 461 [2022-03-20 12:04:25,606 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-03-20 12:04:25,606 INFO L913 BasicCegarLoop]: 237 mSDtfsCounter, 147 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:25,606 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 2691 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:04:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-03-20 12:04:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 447. [2022-03-20 12:04:25,638 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) [2022-03-20 12:04:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2022-03-20 12:04:25,639 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 92 [2022-03-20 12:04:25,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:25,639 INFO L478 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2022-03-20 12:04:25,639 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) [2022-03-20 12:04:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2022-03-20 12:04:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-03-20 12:04:25,640 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:25,640 INFO L499 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] [2022-03-20 12:04:25,640 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-20 12:04:25,640 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:25,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:25,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1857542518, now seen corresponding path program 1 times [2022-03-20 12:04:25,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:25,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856016021] [2022-03-20 12:04:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:25,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 12:04:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:25,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:25,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856016021] [2022-03-20 12:04:25,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856016021] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:25,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:25,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-20 12:04:25,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56452809] [2022-03-20 12:04:25,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:25,930 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 12:04:25,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 12:04:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-03-20 12:04:25,930 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) [2022-03-20 12:04:26,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:26,606 INFO L93 Difference]: Finished difference Result 484 states and 677 transitions. [2022-03-20 12:04:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-20 12:04:26,607 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 [2022-03-20 12:04:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:26,608 INFO L225 Difference]: With dead ends: 484 [2022-03-20 12:04:26,608 INFO L226 Difference]: Without dead ends: 459 [2022-03-20 12:04:26,609 INFO L912 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 [2022-03-20 12:04:26,609 INFO L913 BasicCegarLoop]: 249 mSDtfsCounter, 153 mSDsluCounter, 2653 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:26,609 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 2902 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:04:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-03-20 12:04:26,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-03-20 12:04:26,639 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) [2022-03-20 12:04:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 600 transitions. [2022-03-20 12:04:26,640 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 600 transitions. Word has length 93 [2022-03-20 12:04:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:26,641 INFO L478 AbstractCegarLoop]: Abstraction has 434 states and 600 transitions. [2022-03-20 12:04:26,641 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) [2022-03-20 12:04:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 600 transitions. [2022-03-20 12:04:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-20 12:04:26,642 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:26,642 INFO L499 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] [2022-03-20 12:04:26,642 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-20 12:04:26,642 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:26,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1054192149, now seen corresponding path program 1 times [2022-03-20 12:04:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:26,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908901699] [2022-03-20 12:04:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 12:04:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 12:04:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:26,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:26,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908901699] [2022-03-20 12:04:26,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908901699] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:26,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:26,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-20 12:04:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318376099] [2022-03-20 12:04:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:26,969 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 12:04:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 12:04:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-03-20 12:04:26,970 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) [2022-03-20 12:04:28,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:28,236 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2022-03-20 12:04:28,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-20 12:04:28,236 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 [2022-03-20 12:04:28,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:28,238 INFO L225 Difference]: With dead ends: 470 [2022-03-20 12:04:28,238 INFO L226 Difference]: Without dead ends: 434 [2022-03-20 12:04:28,239 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=203, Invalid=1357, Unknown=0, NotChecked=0, Total=1560 [2022-03-20 12:04:28,239 INFO L913 BasicCegarLoop]: 210 mSDtfsCounter, 363 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:28,239 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 794 Invalid, 3049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2840 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 12:04:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-03-20 12:04:28,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 424. [2022-03-20 12:04:28,270 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) [2022-03-20 12:04:28,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 587 transitions. [2022-03-20 12:04:28,271 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 587 transitions. Word has length 103 [2022-03-20 12:04:28,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:28,271 INFO L478 AbstractCegarLoop]: Abstraction has 424 states and 587 transitions. [2022-03-20 12:04:28,271 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) [2022-03-20 12:04:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 587 transitions. [2022-03-20 12:04:28,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-20 12:04:28,272 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:28,272 INFO L499 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] [2022-03-20 12:04:28,272 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-20 12:04:28,272 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:28,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:28,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1385513232, now seen corresponding path program 1 times [2022-03-20 12:04:28,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:28,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259855144] [2022-03-20 12:04:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:28,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:28,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:04:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-20 12:04:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-03-20 12:04:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-03-20 12:04:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:28,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:28,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259855144] [2022-03-20 12:04:28,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259855144] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:28,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:28,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-20 12:04:28,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108153709] [2022-03-20 12:04:28,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:28,640 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-20 12:04:28,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:28,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-20 12:04:28,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-20 12:04:28,641 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) [2022-03-20 12:04:29,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:29,376 INFO L93 Difference]: Finished difference Result 481 states and 679 transitions. [2022-03-20 12:04:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-20 12:04:29,376 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 [2022-03-20 12:04:29,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:29,378 INFO L225 Difference]: With dead ends: 481 [2022-03-20 12:04:29,378 INFO L226 Difference]: Without dead ends: 454 [2022-03-20 12:04:29,379 INFO L912 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 [2022-03-20 12:04:29,379 INFO L913 BasicCegarLoop]: 200 mSDtfsCounter, 139 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:29,379 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 2181 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:04:29,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-03-20 12:04:29,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 440. [2022-03-20 12:04:29,411 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) [2022-03-20 12:04:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 610 transitions. [2022-03-20 12:04:29,412 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 610 transitions. Word has length 108 [2022-03-20 12:04:29,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:29,412 INFO L478 AbstractCegarLoop]: Abstraction has 440 states and 610 transitions. [2022-03-20 12:04:29,412 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) [2022-03-20 12:04:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 610 transitions. [2022-03-20 12:04:29,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-20 12:04:29,413 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:29,413 INFO L499 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] [2022-03-20 12:04:29,413 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-20 12:04:29,413 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:29,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:29,414 INFO L85 PathProgramCache]: Analyzing trace with hash -205451642, now seen corresponding path program 1 times [2022-03-20 12:04:29,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:29,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932825200] [2022-03-20 12:04:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:29,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:04:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 12:04:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-03-20 12:04:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-20 12:04:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:29,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:29,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932825200] [2022-03-20 12:04:29,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932825200] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:29,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:29,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-20 12:04:29,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210854634] [2022-03-20 12:04:29,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:29,761 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-20 12:04:29,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:29,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-20 12:04:29,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-03-20 12:04:29,762 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) [2022-03-20 12:04:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:30,841 INFO L93 Difference]: Finished difference Result 483 states and 677 transitions. [2022-03-20 12:04:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-20 12:04:30,842 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 [2022-03-20 12:04:30,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:30,846 INFO L225 Difference]: With dead ends: 483 [2022-03-20 12:04:30,846 INFO L226 Difference]: Without dead ends: 443 [2022-03-20 12:04:30,847 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2022-03-20 12:04:30,847 INFO L913 BasicCegarLoop]: 238 mSDtfsCounter, 139 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:30,849 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 2703 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2483 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-20 12:04:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-03-20 12:04:30,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 413. [2022-03-20 12:04:30,890 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) [2022-03-20 12:04:30,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 557 transitions. [2022-03-20 12:04:30,891 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 557 transitions. Word has length 109 [2022-03-20 12:04:30,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:30,892 INFO L478 AbstractCegarLoop]: Abstraction has 413 states and 557 transitions. [2022-03-20 12:04:30,892 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) [2022-03-20 12:04:30,892 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 557 transitions. [2022-03-20 12:04:30,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-03-20 12:04:30,892 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:30,893 INFO L499 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] [2022-03-20 12:04:30,893 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-20 12:04:30,893 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:30,893 INFO L85 PathProgramCache]: Analyzing trace with hash -790809002, now seen corresponding path program 1 times [2022-03-20 12:04:30,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:30,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516074288] [2022-03-20 12:04:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:30,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 12:04:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:30,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 12:04:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:04:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 12:04:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-20 12:04:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:31,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516074288] [2022-03-20 12:04:31,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516074288] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:31,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:31,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 12:04:31,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135740228] [2022-03-20 12:04:31,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:31,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 12:04:31,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:31,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 12:04:31,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:31,064 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) [2022-03-20 12:04:31,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:31,437 INFO L93 Difference]: Finished difference Result 734 states and 984 transitions. [2022-03-20 12:04:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:31,437 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 [2022-03-20 12:04:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:31,439 INFO L225 Difference]: With dead ends: 734 [2022-03-20 12:04:31,439 INFO L226 Difference]: Without dead ends: 420 [2022-03-20 12:04:31,440 INFO L912 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 [2022-03-20 12:04:31,440 INFO L913 BasicCegarLoop]: 217 mSDtfsCounter, 172 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:31,441 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1046 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 12:04:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-03-20 12:04:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 408. [2022-03-20 12:04:31,470 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) [2022-03-20 12:04:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 540 transitions. [2022-03-20 12:04:31,471 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 540 transitions. Word has length 121 [2022-03-20 12:04:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:31,471 INFO L478 AbstractCegarLoop]: Abstraction has 408 states and 540 transitions. [2022-03-20 12:04:31,471 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) [2022-03-20 12:04:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 540 transitions. [2022-03-20 12:04:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-20 12:04:31,472 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:31,472 INFO L499 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] [2022-03-20 12:04:31,472 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-20 12:04:31,472 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:31,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:31,472 INFO L85 PathProgramCache]: Analyzing trace with hash -474317813, now seen corresponding path program 1 times [2022-03-20 12:04:31,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:31,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457784639] [2022-03-20 12:04:31,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:31,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 12:04:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 12:04:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:04:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 12:04:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-20 12:04:31,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:31,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457784639] [2022-03-20 12:04:31,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457784639] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:31,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:31,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 12:04:31,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599086048] [2022-03-20 12:04:31,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:31,677 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 12:04:31,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:31,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 12:04:31,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:31,678 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) [2022-03-20 12:04:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:32,229 INFO L93 Difference]: Finished difference Result 592 states and 836 transitions. [2022-03-20 12:04:32,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:32,229 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 [2022-03-20 12:04:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:32,231 INFO L225 Difference]: With dead ends: 592 [2022-03-20 12:04:32,231 INFO L226 Difference]: Without dead ends: 547 [2022-03-20 12:04:32,232 INFO L912 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 [2022-03-20 12:04:32,232 INFO L913 BasicCegarLoop]: 274 mSDtfsCounter, 167 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:32,232 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 1515 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 12:04:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-03-20 12:04:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 399. [2022-03-20 12:04:32,263 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) [2022-03-20 12:04:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 529 transitions. [2022-03-20 12:04:32,264 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 529 transitions. Word has length 122 [2022-03-20 12:04:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:32,264 INFO L478 AbstractCegarLoop]: Abstraction has 399 states and 529 transitions. [2022-03-20 12:04:32,264 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) [2022-03-20 12:04:32,264 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 529 transitions. [2022-03-20 12:04:32,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-20 12:04:32,265 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:32,265 INFO L499 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] [2022-03-20 12:04:32,265 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-20 12:04:32,265 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:32,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:32,266 INFO L85 PathProgramCache]: Analyzing trace with hash -286096315, now seen corresponding path program 1 times [2022-03-20 12:04:32,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:32,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710612331] [2022-03-20 12:04:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:32,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-20 12:04:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-20 12:04:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-20 12:04:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-03-20 12:04:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-03-20 12:04:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:04:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:04:32,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:32,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710612331] [2022-03-20 12:04:32,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710612331] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:32,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:32,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-03-20 12:04:32,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664198701] [2022-03-20 12:04:32,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:32,651 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-20 12:04:32,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:32,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-20 12:04:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-03-20 12:04:32,652 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) [2022-03-20 12:04:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:33,980 INFO L93 Difference]: Finished difference Result 416 states and 551 transitions. [2022-03-20 12:04:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-20 12:04:33,981 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 [2022-03-20 12:04:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:33,982 INFO L225 Difference]: With dead ends: 416 [2022-03-20 12:04:33,982 INFO L226 Difference]: Without dead ends: 354 [2022-03-20 12:04:33,983 INFO L912 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 [2022-03-20 12:04:33,983 INFO L913 BasicCegarLoop]: 178 mSDtfsCounter, 401 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:33,984 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 496 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 12:04:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-20 12:04:34,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 341. [2022-03-20 12:04:34,011 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) [2022-03-20 12:04:34,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 436 transitions. [2022-03-20 12:04:34,012 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 436 transitions. Word has length 119 [2022-03-20 12:04:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:34,012 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 436 transitions. [2022-03-20 12:04:34,012 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) [2022-03-20 12:04:34,012 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 436 transitions. [2022-03-20 12:04:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-20 12:04:34,013 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:34,013 INFO L499 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] [2022-03-20 12:04:34,013 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-20 12:04:34,013 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:34,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash 762913287, now seen corresponding path program 1 times [2022-03-20 12:04:34,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:34,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489262966] [2022-03-20 12:04:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:34,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 12:04:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 12:04:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:04:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 12:04:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 12:04:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 12:04:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-20 12:04:34,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:34,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489262966] [2022-03-20 12:04:34,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489262966] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 12:04:34,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896439927] [2022-03-20 12:04:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:34,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 12:04:34,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 12:04:34,236 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) [2022-03-20 12:04:34,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 12:04:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:34,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 12:04:34,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 12:04:34,681 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-03-20 12:04:34,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 12:04:34,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896439927] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:34,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 12:04:34,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-03-20 12:04:34,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265192934] [2022-03-20 12:04:34,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:34,683 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 12:04:34,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 12:04:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-20 12:04:34,684 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) [2022-03-20 12:04:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:34,721 INFO L93 Difference]: Finished difference Result 352 states and 447 transitions. [2022-03-20 12:04:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 12:04:34,722 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 [2022-03-20 12:04:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:34,723 INFO L225 Difference]: With dead ends: 352 [2022-03-20 12:04:34,723 INFO L226 Difference]: Without dead ends: 341 [2022-03-20 12:04:34,724 INFO L912 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 [2022-03-20 12:04:34,729 INFO L913 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 [2022-03-20 12:04:34,730 INFO L914 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] [2022-03-20 12:04:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-03-20 12:04:34,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-03-20 12:04:34,766 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) [2022-03-20 12:04:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 434 transitions. [2022-03-20 12:04:34,767 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 434 transitions. Word has length 163 [2022-03-20 12:04:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:34,768 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 434 transitions. [2022-03-20 12:04:34,768 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) [2022-03-20 12:04:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 434 transitions. [2022-03-20 12:04:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-03-20 12:04:34,770 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:34,770 INFO L499 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] [2022-03-20 12:04:34,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 12:04:34,987 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 [2022-03-20 12:04:34,987 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1424868086, now seen corresponding path program 1 times [2022-03-20 12:04:34,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:34,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361161838] [2022-03-20 12:04:34,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:34,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 12:04:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 12:04:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:04:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 12:04:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-20 12:04:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-03-20 12:04:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-20 12:04:35,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:35,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361161838] [2022-03-20 12:04:35,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361161838] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 12:04:35,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663889134] [2022-03-20 12:04:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:35,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 12:04:35,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 12:04:35,212 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) [2022-03-20 12:04:35,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 12:04:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:35,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 1325 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 12:04:35,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 12:04:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-20 12:04:35,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 12:04:35,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663889134] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:35,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 12:04:35,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 15 [2022-03-20 12:04:35,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306158772] [2022-03-20 12:04:35,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:35,624 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 12:04:35,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:35,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 12:04:35,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:35,624 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) [2022-03-20 12:04:35,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:35,704 INFO L93 Difference]: Finished difference Result 630 states and 816 transitions. [2022-03-20 12:04:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 12:04:35,705 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 [2022-03-20 12:04:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:35,706 INFO L225 Difference]: With dead ends: 630 [2022-03-20 12:04:35,706 INFO L226 Difference]: Without dead ends: 372 [2022-03-20 12:04:35,707 INFO L912 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 [2022-03-20 12:04:35,707 INFO L913 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 [2022-03-20 12:04:35,707 INFO L914 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] [2022-03-20 12:04:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-03-20 12:04:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 361. [2022-03-20 12:04:35,737 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) [2022-03-20 12:04:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 463 transitions. [2022-03-20 12:04:35,738 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 463 transitions. Word has length 163 [2022-03-20 12:04:35,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:35,738 INFO L478 AbstractCegarLoop]: Abstraction has 361 states and 463 transitions. [2022-03-20 12:04:35,738 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) [2022-03-20 12:04:35,738 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 463 transitions. [2022-03-20 12:04:35,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-20 12:04:35,739 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:35,740 INFO L499 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] [2022-03-20 12:04:35,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 12:04:35,955 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 [2022-03-20 12:04:35,956 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:35,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:35,956 INFO L85 PathProgramCache]: Analyzing trace with hash -589316084, now seen corresponding path program 1 times [2022-03-20 12:04:35,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:35,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104954443] [2022-03-20 12:04:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:35,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 12:04:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 12:04:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:04:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 12:04:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 12:04:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-20 12:04:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-20 12:04:36,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:36,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104954443] [2022-03-20 12:04:36,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104954443] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:36,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:36,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 12:04:36,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992514324] [2022-03-20 12:04:36,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:36,209 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 12:04:36,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:36,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 12:04:36,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:36,210 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) [2022-03-20 12:04:36,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:36,952 INFO L93 Difference]: Finished difference Result 655 states and 841 transitions. [2022-03-20 12:04:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:36,953 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 [2022-03-20 12:04:36,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:36,955 INFO L225 Difference]: With dead ends: 655 [2022-03-20 12:04:36,955 INFO L226 Difference]: Without dead ends: 428 [2022-03-20 12:04:36,955 INFO L912 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 [2022-03-20 12:04:36,956 INFO L913 BasicCegarLoop]: 215 mSDtfsCounter, 115 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:36,956 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1240 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-20 12:04:36,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-03-20 12:04:36,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 345. [2022-03-20 12:04:36,985 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) [2022-03-20 12:04:36,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 433 transitions. [2022-03-20 12:04:36,985 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 433 transitions. Word has length 164 [2022-03-20 12:04:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:36,986 INFO L478 AbstractCegarLoop]: Abstraction has 345 states and 433 transitions. [2022-03-20 12:04:36,986 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) [2022-03-20 12:04:36,986 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 433 transitions. [2022-03-20 12:04:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-03-20 12:04:36,987 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:36,987 INFO L499 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] [2022-03-20 12:04:36,987 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-20 12:04:36,987 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash -158276280, now seen corresponding path program 1 times [2022-03-20 12:04:36,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:36,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075167046] [2022-03-20 12:04:36,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:36,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 12:04:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 12:04:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:04:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 12:04:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 12:04:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-20 12:04:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-20 12:04:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-20 12:04:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,220 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-03-20 12:04:37,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:37,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075167046] [2022-03-20 12:04:37,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075167046] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:37,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:37,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 12:04:37,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465398626] [2022-03-20 12:04:37,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:37,221 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 12:04:37,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:37,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 12:04:37,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:37,221 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) [2022-03-20 12:04:37,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:37,591 INFO L93 Difference]: Finished difference Result 443 states and 558 transitions. [2022-03-20 12:04:37,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:37,592 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 [2022-03-20 12:04:37,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:37,593 INFO L225 Difference]: With dead ends: 443 [2022-03-20 12:04:37,593 INFO L226 Difference]: Without dead ends: 354 [2022-03-20 12:04:37,594 INFO L912 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 [2022-03-20 12:04:37,594 INFO L913 BasicCegarLoop]: 191 mSDtfsCounter, 237 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:37,594 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 897 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 12:04:37,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-03-20 12:04:37,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 309. [2022-03-20 12:04:37,618 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) [2022-03-20 12:04:37,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 385 transitions. [2022-03-20 12:04:37,619 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 385 transitions. Word has length 204 [2022-03-20 12:04:37,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:37,619 INFO L478 AbstractCegarLoop]: Abstraction has 309 states and 385 transitions. [2022-03-20 12:04:37,619 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) [2022-03-20 12:04:37,619 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 385 transitions. [2022-03-20 12:04:37,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-03-20 12:04:37,620 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:04:37,621 INFO L499 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] [2022-03-20 12:04:37,621 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-20 12:04:37,621 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:04:37,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:04:37,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1341132510, now seen corresponding path program 1 times [2022-03-20 12:04:37,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:04:37,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420979894] [2022-03-20 12:04:37,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:04:37,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:04:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:04:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 12:04:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 12:04:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 12:04:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-20 12:04:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-03-20 12:04:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-20 12:04:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-20 12:04:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-03-20 12:04:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-03-20 12:04:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:37,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-03-20 12:04:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-03-20 12:04:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 12:04:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 12:04:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-20 12:04:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:04:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-03-20 12:04:37,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:04:37,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420979894] [2022-03-20 12:04:37,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420979894] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:04:37,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:04:37,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-20 12:04:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231593210] [2022-03-20 12:04:37,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:04:37,849 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 12:04:37,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 12:04:37,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 12:04:37,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-03-20 12:04:37,850 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) [2022-03-20 12:04:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:04:38,210 INFO L93 Difference]: Finished difference Result 315 states and 397 transitions. [2022-03-20 12:04:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 12:04:38,210 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 [2022-03-20 12:04:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:04:38,211 INFO L225 Difference]: With dead ends: 315 [2022-03-20 12:04:38,211 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 12:04:38,214 INFO L912 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 [2022-03-20 12:04:38,215 INFO L913 BasicCegarLoop]: 153 mSDtfsCounter, 117 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 12:04:38,216 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 673 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 12:04:38,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 12:04:38,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 12:04:38,217 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) [2022-03-20 12:04:38,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 12:04:38,217 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2022-03-20 12:04:38,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:04:38,217 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 12:04:38,217 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) [2022-03-20 12:04:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 12:04:38,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 12:04:38,219 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 12:04:38,219 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-20 12:04:38,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.