/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/cdaudio_simpl1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 01:37:34,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 01:37:34,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 01:37:34,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 01:37:34,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 01:37:34,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 01:37:34,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 01:37:34,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 01:37:34,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 01:37:34,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 01:37:34,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 01:37:34,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 01:37:34,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 01:37:34,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 01:37:34,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 01:37:34,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 01:37:34,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 01:37:34,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 01:37:34,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 01:37:34,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 01:37:34,881 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 01:37:34,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 01:37:34,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 01:37:34,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 01:37:34,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 01:37:34,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-19 01:37:34,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-19 01:37:34,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-19 01:37:34,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-19 01:37:34,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-19 01:37:34,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-19 01:37:34,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-19 01:37:34,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-19 01:37:34,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-19 01:37:34,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-19 01:37:34,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-19 01:37:34,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-19 01:37:34,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-19 01:37:34,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-19 01:37:34,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 01:37:34,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 01:37:34,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 01:37:34,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-19 01:37:34,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 01:37:34,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 01:37:34,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-19 01:37:34,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-19 01:37:34,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-19 01:37:34,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-19 01:37:34,918 INFO L138 SettingsManager]: * Use SBE=true [2022-03-19 01:37:34,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 01:37:34,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 01:37:34,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 01:37:34,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 01:37:34,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 01:37:34,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 01:37:34,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 01:37:34,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 01:37:34,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 01:37:34,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 01:37:34,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 01:37:34,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 01:37:34,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 01:37:34,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 01:37:34,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-19 01:37:34,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-19 01:37:34,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-19 01:37:34,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-19 01:37:34,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 01:37:34,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-19 01:37:34,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-19 01:37:34,921 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-19 01:37:34,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 01:37:35,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 01:37:35,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 01:37:35,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 01:37:35,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 01:37:35,142 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 01:37:35,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-03-19 01:37:35,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60ed6156/eb2ce4fa4cb04eb4b1cd208a8fb1ebe9/FLAG5477ac4b9 [2022-03-19 01:37:35,647 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 01:37:35,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-03-19 01:37:35,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60ed6156/eb2ce4fa4cb04eb4b1cd208a8fb1ebe9/FLAG5477ac4b9 [2022-03-19 01:37:35,678 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f60ed6156/eb2ce4fa4cb04eb4b1cd208a8fb1ebe9 [2022-03-19 01:37:35,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 01:37:35,681 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-19 01:37:35,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 01:37:35,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 01:37:35,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 01:37:35,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:37:35" (1/1) ... [2022-03-19 01:37:35,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d781a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:35, skipping insertion in model container [2022-03-19 01:37:35,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:37:35" (1/1) ... [2022-03-19 01:37:35,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 01:37:35,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 01:37:35,947 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/cdaudio_simpl1.cil-2.c[2073,2086] [2022-03-19 01:37:36,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 01:37:36,083 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 01:37:36,097 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/cdaudio_simpl1.cil-2.c[2073,2086] [2022-03-19 01:37:36,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 01:37:36,194 INFO L208 MainTranslator]: Completed translation [2022-03-19 01:37:36,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:36 WrapperNode [2022-03-19 01:37:36,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 01:37:36,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 01:37:36,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 01:37:36,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 01:37:36,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:36" (1/1) ... [2022-03-19 01:37:36,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:36" (1/1) ... [2022-03-19 01:37:36,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:36" (1/1) ... [2022-03-19 01:37:36,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:36" (1/1) ... [2022-03-19 01:37:36,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:36" (1/1) ... [2022-03-19 01:37:36,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:36" (1/1) ... [2022-03-19 01:37:36,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:36" (1/1) ... [2022-03-19 01:37:36,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 01:37:36,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 01:37:36,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 01:37:36,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 01:37:36,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:36" (1/1) ... [2022-03-19 01:37:36,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 01:37:36,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 01:37:36,324 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) [2022-03-19 01:37:36,355 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 [2022-03-19 01:37:36,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 01:37:36,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 01:37:36,360 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 01:37:36,360 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-03-19 01:37:36,361 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-03-19 01:37:36,361 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-03-19 01:37:36,361 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-03-19 01:37:36,362 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-03-19 01:37:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-03-19 01:37:36,363 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-03-19 01:37:36,364 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-03-19 01:37:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-03-19 01:37:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-03-19 01:37:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 01:37:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-03-19 01:37:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-03-19 01:37:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-03-19 01:37:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-03-19 01:37:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-03-19 01:37:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-03-19 01:37:36,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-03-19 01:37:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 01:37:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 01:37:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 01:37:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 01:37:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-03-19 01:37:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 01:37:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-03-19 01:37:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-03-19 01:37:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-03-19 01:37:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-03-19 01:37:36,366 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-03-19 01:37:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-03-19 01:37:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-03-19 01:37:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-03-19 01:37:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-03-19 01:37:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-03-19 01:37:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-03-19 01:37:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-03-19 01:37:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-03-19 01:37:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-03-19 01:37:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-03-19 01:37:36,368 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-03-19 01:37:36,368 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-03-19 01:37:36,368 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-03-19 01:37:36,368 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-03-19 01:37:36,368 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-03-19 01:37:36,368 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-03-19 01:37:36,368 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-03-19 01:37:36,369 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-03-19 01:37:36,369 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-03-19 01:37:36,369 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-03-19 01:37:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-03-19 01:37:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-03-19 01:37:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 01:37:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-03-19 01:37:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 01:37:36,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 01:37:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 01:37:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 01:37:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 01:37:36,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 01:37:36,632 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 01:37:36,633 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 01:37:36,756 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 01:37:36,816 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-03-19 01:37:36,816 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-03-19 01:37:36,820 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 01:37:36,845 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-03-19 01:37:36,845 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-03-19 01:37:36,862 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 01:37:36,873 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-03-19 01:37:36,873 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-03-19 01:37:36,915 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 01:37:36,942 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-03-19 01:37:36,942 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-03-19 01:37:36,942 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-03-19 01:37:36,946 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 01:37:37,072 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-03-19 01:37:37,072 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-03-19 01:37:37,073 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 01:37:37,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-03-19 01:37:37,090 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-03-19 01:37:37,113 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 01:37:37,132 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-03-19 01:37:37,132 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-03-19 01:37:37,135 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 01:37:37,253 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-03-19 01:37:37,253 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-03-19 01:37:37,261 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-03-19 01:37:37,264 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-03-19 01:37:37,264 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-03-19 01:37:37,282 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 01:37:37,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 01:37:37,290 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 01:37:37,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:37:37 BoogieIcfgContainer [2022-03-19 01:37:37,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 01:37:37,293 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-19 01:37:37,293 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-19 01:37:37,293 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-19 01:37:37,295 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:37:37" (1/1) ... [2022-03-19 01:37:37,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 19.03 01:37:37 BasicIcfg [2022-03-19 01:37:37,330 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-19 01:37:37,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 01:37:37,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 01:37:37,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 01:37:37,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 01:37:35" (1/4) ... [2022-03-19 01:37:37,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351c1cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:37:37, skipping insertion in model container [2022-03-19 01:37:37,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:37:36" (2/4) ... [2022-03-19 01:37:37,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351c1cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:37:37, skipping insertion in model container [2022-03-19 01:37:37,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:37:37" (3/4) ... [2022-03-19 01:37:37,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351c1cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 01:37:37, skipping insertion in model container [2022-03-19 01:37:37,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 19.03 01:37:37" (4/4) ... [2022-03-19 01:37:37,335 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.cqvasr [2022-03-19 01:37:37,338 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-19 01:37:37,338 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 01:37:37,377 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 01:37:37,382 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 [2022-03-19 01:37:37,383 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 01:37:37,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 515 states, 382 states have (on average 1.486910994764398) internal successors, (568), 402 states have internal predecessors, (568), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-03-19 01:37:37,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-19 01:37:37,423 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:37,424 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:37,425 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:37,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:37,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1376594176, now seen corresponding path program 1 times [2022-03-19 01:37:37,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:37,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834499154] [2022-03-19 01:37:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:37,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:37,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:37,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:37,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834499154] [2022-03-19 01:37:37,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834499154] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:37,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:37,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 01:37:37,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456955214] [2022-03-19 01:37:37,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:37,767 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 01:37:37,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:37,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 01:37:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-19 01:37:37,788 INFO L87 Difference]: Start difference. First operand has 515 states, 382 states have (on average 1.486910994764398) internal successors, (568), 402 states have internal predecessors, (568), 102 states have call successors, (102), 29 states have call predecessors, (102), 29 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) 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) [2022-03-19 01:37:39,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:39,386 INFO L93 Difference]: Finished difference Result 1043 states and 1675 transitions. [2022-03-19 01:37:39,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 01:37:39,388 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 [2022-03-19 01:37:39,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:39,404 INFO L225 Difference]: With dead ends: 1043 [2022-03-19 01:37:39,405 INFO L226 Difference]: Without dead ends: 663 [2022-03-19 01:37:39,412 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-03-19 01:37:39,415 INFO L912 BasicCegarLoop]: 738 mSDtfsCounter, 770 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:39,416 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 1003 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 01:37:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-03-19 01:37:39,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 507. [2022-03-19 01:37:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 377 states have (on average 1.4562334217506632) internal successors, (549), 395 states have internal predecessors, (549), 102 states have call successors, (102), 29 states have call predecessors, (102), 27 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-03-19 01:37:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 737 transitions. [2022-03-19 01:37:39,539 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 737 transitions. Word has length 20 [2022-03-19 01:37:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:39,539 INFO L478 AbstractCegarLoop]: Abstraction has 507 states and 737 transitions. [2022-03-19 01:37:39,540 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) [2022-03-19 01:37:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 737 transitions. [2022-03-19 01:37:39,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-19 01:37:39,541 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:39,541 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:39,541 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 01:37:39,541 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:39,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:39,541 INFO L85 PathProgramCache]: Analyzing trace with hash 752029052, now seen corresponding path program 1 times [2022-03-19 01:37:39,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:39,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653655692] [2022-03-19 01:37:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:39,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:39,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:39,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:39,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:39,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653655692] [2022-03-19 01:37:39,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653655692] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:39,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:39,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 01:37:39,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101483187] [2022-03-19 01:37:39,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:39,702 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 01:37:39,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:39,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 01:37:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 01:37:39,703 INFO L87 Difference]: Start difference. First operand 507 states and 737 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 01:37:41,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:41,055 INFO L93 Difference]: Finished difference Result 961 states and 1420 transitions. [2022-03-19 01:37:41,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 01:37:41,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-03-19 01:37:41,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:41,060 INFO L225 Difference]: With dead ends: 961 [2022-03-19 01:37:41,060 INFO L226 Difference]: Without dead ends: 842 [2022-03-19 01:37:41,061 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 01:37:41,061 INFO L912 BasicCegarLoop]: 837 mSDtfsCounter, 1495 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:41,062 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1499 Valid, 1004 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-19 01:37:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-03-19 01:37:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 662. [2022-03-19 01:37:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 501 states have (on average 1.407185628742515) internal successors, (705), 508 states have internal predecessors, (705), 111 states have call successors, (111), 40 states have call predecessors, (111), 49 states have return successors, (145), 119 states have call predecessors, (145), 99 states have call successors, (145) [2022-03-19 01:37:41,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 961 transitions. [2022-03-19 01:37:41,104 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 961 transitions. Word has length 25 [2022-03-19 01:37:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:41,104 INFO L478 AbstractCegarLoop]: Abstraction has 662 states and 961 transitions. [2022-03-19 01:37:41,104 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 3 states have internal predecessors, (16), 3 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 01:37:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 961 transitions. [2022-03-19 01:37:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-19 01:37:41,105 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:41,105 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:41,106 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 01:37:41,106 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:41,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2092358377, now seen corresponding path program 1 times [2022-03-19 01:37:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:41,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930214401] [2022-03-19 01:37:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:41,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:41,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:41,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930214401] [2022-03-19 01:37:41,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930214401] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:41,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:41,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 01:37:41,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799364374] [2022-03-19 01:37:41,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:41,247 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 01:37:41,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:41,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 01:37:41,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 01:37:41,247 INFO L87 Difference]: Start difference. First operand 662 states and 961 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-03-19 01:37:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:42,406 INFO L93 Difference]: Finished difference Result 1142 states and 1641 transitions. [2022-03-19 01:37:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 01:37:42,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 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 30 [2022-03-19 01:37:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:42,417 INFO L225 Difference]: With dead ends: 1142 [2022-03-19 01:37:42,417 INFO L226 Difference]: Without dead ends: 966 [2022-03-19 01:37:42,418 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 01:37:42,423 INFO L912 BasicCegarLoop]: 722 mSDtfsCounter, 1919 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:42,425 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 860 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-19 01:37:42,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-03-19 01:37:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 787. [2022-03-19 01:37:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 610 states have (on average 1.4032786885245903) internal successors, (856), 613 states have internal predecessors, (856), 113 states have call successors, (113), 46 states have call predecessors, (113), 63 states have return successors, (163), 130 states have call predecessors, (163), 104 states have call successors, (163) [2022-03-19 01:37:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1132 transitions. [2022-03-19 01:37:42,487 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1132 transitions. Word has length 30 [2022-03-19 01:37:42,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:42,487 INFO L478 AbstractCegarLoop]: Abstraction has 787 states and 1132 transitions. [2022-03-19 01:37:42,487 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-03-19 01:37:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1132 transitions. [2022-03-19 01:37:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-19 01:37:42,492 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:42,492 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:42,492 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 01:37:42,493 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:42,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:42,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1387045423, now seen corresponding path program 1 times [2022-03-19 01:37:42,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:42,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080412825] [2022-03-19 01:37:42,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:42,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:42,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:42,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:42,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:42,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080412825] [2022-03-19 01:37:42,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080412825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:42,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:42,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 01:37:42,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736769321] [2022-03-19 01:37:42,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:42,634 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 01:37:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:42,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 01:37:42,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 01:37:42,635 INFO L87 Difference]: Start difference. First operand 787 states and 1132 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 01:37:44,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:44,798 INFO L93 Difference]: Finished difference Result 1624 states and 2440 transitions. [2022-03-19 01:37:44,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 01:37:44,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 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 31 [2022-03-19 01:37:44,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:44,804 INFO L225 Difference]: With dead ends: 1624 [2022-03-19 01:37:44,804 INFO L226 Difference]: Without dead ends: 1340 [2022-03-19 01:37:44,805 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 01:37:44,806 INFO L912 BasicCegarLoop]: 1003 mSDtfsCounter, 1092 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:44,806 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 1278 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-19 01:37:44,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-03-19 01:37:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 905. [2022-03-19 01:37:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 707 states have (on average 1.413012729844413) internal successors, (999), 709 states have internal predecessors, (999), 126 states have call successors, (126), 54 states have call predecessors, (126), 71 states have return successors, (220), 144 states have call predecessors, (220), 117 states have call successors, (220) [2022-03-19 01:37:44,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1345 transitions. [2022-03-19 01:37:44,861 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1345 transitions. Word has length 31 [2022-03-19 01:37:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:44,862 INFO L478 AbstractCegarLoop]: Abstraction has 905 states and 1345 transitions. [2022-03-19 01:37:44,862 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 01:37:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1345 transitions. [2022-03-19 01:37:44,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-19 01:37:44,864 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:44,864 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:44,864 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-19 01:37:44,864 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:44,864 INFO L85 PathProgramCache]: Analyzing trace with hash -81256447, now seen corresponding path program 1 times [2022-03-19 01:37:44,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:44,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116122523] [2022-03-19 01:37:44,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:44,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:44,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:45,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:45,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116122523] [2022-03-19 01:37:45,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116122523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:45,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:45,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 01:37:45,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921269765] [2022-03-19 01:37:45,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:45,038 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 01:37:45,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:45,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 01:37:45,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-19 01:37:45,039 INFO L87 Difference]: Start difference. First operand 905 states and 1345 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-19 01:37:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:46,772 INFO L93 Difference]: Finished difference Result 1626 states and 2474 transitions. [2022-03-19 01:37:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:37:46,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2022-03-19 01:37:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:46,777 INFO L225 Difference]: With dead ends: 1626 [2022-03-19 01:37:46,777 INFO L226 Difference]: Without dead ends: 1042 [2022-03-19 01:37:46,779 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-03-19 01:37:46,779 INFO L912 BasicCegarLoop]: 731 mSDtfsCounter, 2117 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:46,780 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2123 Valid, 990 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 01:37:46,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-03-19 01:37:46,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 833. [2022-03-19 01:37:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 648 states have (on average 1.3981481481481481) internal successors, (906), 651 states have internal predecessors, (906), 117 states have call successors, (117), 50 states have call predecessors, (117), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-03-19 01:37:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1200 transitions. [2022-03-19 01:37:46,823 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1200 transitions. Word has length 32 [2022-03-19 01:37:46,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:46,823 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1200 transitions. [2022-03-19 01:37:46,824 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-19 01:37:46,824 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1200 transitions. [2022-03-19 01:37:46,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-19 01:37:46,825 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:46,825 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:46,825 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-19 01:37:46,825 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:46,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:46,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2003772890, now seen corresponding path program 1 times [2022-03-19 01:37:46,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:46,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292924271] [2022-03-19 01:37:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:46,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:46,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:46,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:46,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292924271] [2022-03-19 01:37:46,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292924271] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:46,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:46,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 01:37:46,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762119942] [2022-03-19 01:37:46,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:46,920 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 01:37:46,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:46,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 01:37:46,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 01:37:46,921 INFO L87 Difference]: Start difference. First operand 833 states and 1200 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 01:37:48,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:48,710 INFO L93 Difference]: Finished difference Result 963 states and 1422 transitions. [2022-03-19 01:37:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 01:37:48,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-03-19 01:37:48,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:48,714 INFO L225 Difference]: With dead ends: 963 [2022-03-19 01:37:48,715 INFO L226 Difference]: Without dead ends: 959 [2022-03-19 01:37:48,715 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-19 01:37:48,716 INFO L912 BasicCegarLoop]: 710 mSDtfsCounter, 407 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:48,716 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 975 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-19 01:37:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-03-19 01:37:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 832. [2022-03-19 01:37:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 648 states have (on average 1.3950617283950617) internal successors, (904), 650 states have internal predecessors, (904), 116 states have call successors, (116), 50 states have call predecessors, (116), 67 states have return successors, (177), 134 states have call predecessors, (177), 108 states have call successors, (177) [2022-03-19 01:37:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1197 transitions. [2022-03-19 01:37:48,757 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1197 transitions. Word has length 36 [2022-03-19 01:37:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:48,757 INFO L478 AbstractCegarLoop]: Abstraction has 832 states and 1197 transitions. [2022-03-19 01:37:48,758 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 01:37:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1197 transitions. [2022-03-19 01:37:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-19 01:37:48,759 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:48,759 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:48,759 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-19 01:37:48,759 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:48,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:48,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1794233418, now seen corresponding path program 1 times [2022-03-19 01:37:48,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:48,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473860434] [2022-03-19 01:37:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:48,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:48,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473860434] [2022-03-19 01:37:48,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473860434] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:48,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:48,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 01:37:48,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388584859] [2022-03-19 01:37:48,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:48,916 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 01:37:48,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 01:37:48,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-19 01:37:48,917 INFO L87 Difference]: Start difference. First operand 832 states and 1197 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-03-19 01:37:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:51,135 INFO L93 Difference]: Finished difference Result 1409 states and 2012 transitions. [2022-03-19 01:37:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:37:51,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 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 39 [2022-03-19 01:37:51,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:51,145 INFO L225 Difference]: With dead ends: 1409 [2022-03-19 01:37:51,145 INFO L226 Difference]: Without dead ends: 993 [2022-03-19 01:37:51,146 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-19 01:37:51,147 INFO L912 BasicCegarLoop]: 812 mSDtfsCounter, 744 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 2621 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 2621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:51,147 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1266 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 2621 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-19 01:37:51,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-03-19 01:37:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 734. [2022-03-19 01:37:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 570 states have (on average 1.3859649122807018) internal successors, (790), 573 states have internal predecessors, (790), 105 states have call successors, (105), 45 states have call predecessors, (105), 58 states have return successors, (131), 118 states have call predecessors, (131), 97 states have call successors, (131) [2022-03-19 01:37:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1026 transitions. [2022-03-19 01:37:51,188 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1026 transitions. Word has length 39 [2022-03-19 01:37:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:51,188 INFO L478 AbstractCegarLoop]: Abstraction has 734 states and 1026 transitions. [2022-03-19 01:37:51,188 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-03-19 01:37:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1026 transitions. [2022-03-19 01:37:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-19 01:37:51,190 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:51,190 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:51,190 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-19 01:37:51,190 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:51,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1491782484, now seen corresponding path program 1 times [2022-03-19 01:37:51,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:51,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086203961] [2022-03-19 01:37:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:51,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:51,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:51,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:51,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086203961] [2022-03-19 01:37:51,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086203961] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:51,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:51,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 01:37:51,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67275145] [2022-03-19 01:37:51,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:51,304 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 01:37:51,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:51,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 01:37:51,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 01:37:51,304 INFO L87 Difference]: Start difference. First operand 734 states and 1026 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 01:37:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:52,606 INFO L93 Difference]: Finished difference Result 975 states and 1402 transitions. [2022-03-19 01:37:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 01:37:52,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-03-19 01:37:52,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:52,610 INFO L225 Difference]: With dead ends: 975 [2022-03-19 01:37:52,610 INFO L226 Difference]: Without dead ends: 957 [2022-03-19 01:37:52,610 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 01:37:52,611 INFO L912 BasicCegarLoop]: 669 mSDtfsCounter, 1139 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:52,611 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 749 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-19 01:37:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-03-19 01:37:52,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 754. [2022-03-19 01:37:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3962585034013606) internal successors, (821), 600 states have internal predecessors, (821), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-03-19 01:37:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1052 transitions. [2022-03-19 01:37:52,656 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1052 transitions. Word has length 40 [2022-03-19 01:37:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:52,659 INFO L478 AbstractCegarLoop]: Abstraction has 754 states and 1052 transitions. [2022-03-19 01:37:52,659 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-19 01:37:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1052 transitions. [2022-03-19 01:37:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-19 01:37:52,662 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:52,662 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:52,662 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-19 01:37:52,662 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash 938541339, now seen corresponding path program 1 times [2022-03-19 01:37:52,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:52,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986590529] [2022-03-19 01:37:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:52,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:52,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:52,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:52,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-03-19 01:37:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:52,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:52,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986590529] [2022-03-19 01:37:52,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986590529] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:52,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:52,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 01:37:52,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144146608] [2022-03-19 01:37:52,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:52,776 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 01:37:52,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 01:37:52,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-19 01:37:52,777 INFO L87 Difference]: Start difference. First operand 754 states and 1052 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 01:37:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:54,316 INFO L93 Difference]: Finished difference Result 1159 states and 1659 transitions. [2022-03-19 01:37:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 01:37:54,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-03-19 01:37:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:54,320 INFO L225 Difference]: With dead ends: 1159 [2022-03-19 01:37:54,320 INFO L226 Difference]: Without dead ends: 934 [2022-03-19 01:37:54,321 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-03-19 01:37:54,321 INFO L912 BasicCegarLoop]: 788 mSDtfsCounter, 580 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:54,322 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 1312 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 01:37:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-03-19 01:37:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 754. [2022-03-19 01:37:54,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 588 states have (on average 1.3945578231292517) internal successors, (820), 600 states have internal predecessors, (820), 107 states have call successors, (107), 48 states have call predecessors, (107), 58 states have return successors, (124), 110 states have call predecessors, (124), 100 states have call successors, (124) [2022-03-19 01:37:54,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1051 transitions. [2022-03-19 01:37:54,365 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1051 transitions. Word has length 46 [2022-03-19 01:37:54,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:54,365 INFO L478 AbstractCegarLoop]: Abstraction has 754 states and 1051 transitions. [2022-03-19 01:37:54,365 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 7 states have call predecessors, (10), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 01:37:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1051 transitions. [2022-03-19 01:37:54,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-19 01:37:54,367 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:54,367 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:54,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-19 01:37:54,367 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:54,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash -747319687, now seen corresponding path program 1 times [2022-03-19 01:37:54,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:54,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783094649] [2022-03-19 01:37:54,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:54,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:54,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-03-19 01:37:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:54,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:54,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783094649] [2022-03-19 01:37:54,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783094649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:54,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:54,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 01:37:54,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23382564] [2022-03-19 01:37:54,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:54,484 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 01:37:54,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:54,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 01:37:54,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-19 01:37:54,484 INFO L87 Difference]: Start difference. First operand 754 states and 1051 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 01:37:55,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:55,611 INFO L93 Difference]: Finished difference Result 956 states and 1371 transitions. [2022-03-19 01:37:55,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 01:37:55,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-03-19 01:37:55,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:55,618 INFO L225 Difference]: With dead ends: 956 [2022-03-19 01:37:55,618 INFO L226 Difference]: Without dead ends: 889 [2022-03-19 01:37:55,618 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2022-03-19 01:37:55,619 INFO L912 BasicCegarLoop]: 664 mSDtfsCounter, 1894 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:55,619 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1900 Valid, 1110 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-19 01:37:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-03-19 01:37:55,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 743. [2022-03-19 01:37:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 581 states have (on average 1.395869191049914) internal successors, (811), 593 states have internal predecessors, (811), 105 states have call successors, (105), 46 states have call predecessors, (105), 56 states have return successors, (122), 108 states have call predecessors, (122), 98 states have call successors, (122) [2022-03-19 01:37:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1038 transitions. [2022-03-19 01:37:55,662 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1038 transitions. Word has length 47 [2022-03-19 01:37:55,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:55,662 INFO L478 AbstractCegarLoop]: Abstraction has 743 states and 1038 transitions. [2022-03-19 01:37:55,662 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-19 01:37:55,662 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1038 transitions. [2022-03-19 01:37:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-19 01:37:55,664 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:55,664 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:55,664 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-19 01:37:55,664 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:55,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:55,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1537806195, now seen corresponding path program 1 times [2022-03-19 01:37:55,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:55,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513449785] [2022-03-19 01:37:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:55,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:55,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:55,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:55,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:37:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:37:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:55,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:55,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513449785] [2022-03-19 01:37:55,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513449785] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:55,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:55,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 01:37:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751707930] [2022-03-19 01:37:55,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:55,821 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 01:37:55,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:55,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 01:37:55,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-03-19 01:37:55,823 INFO L87 Difference]: Start difference. First operand 743 states and 1038 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 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) [2022-03-19 01:37:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:57,755 INFO L93 Difference]: Finished difference Result 1059 states and 1503 transitions. [2022-03-19 01:37:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 01:37:57,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 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 48 [2022-03-19 01:37:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:57,759 INFO L225 Difference]: With dead ends: 1059 [2022-03-19 01:37:57,759 INFO L226 Difference]: Without dead ends: 998 [2022-03-19 01:37:57,760 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-03-19 01:37:57,760 INFO L912 BasicCegarLoop]: 751 mSDtfsCounter, 2185 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2214 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 2986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:57,760 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2214 Valid, 1701 Invalid, 2986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-19 01:37:57,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-03-19 01:37:57,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 786. [2022-03-19 01:37:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 616 states have (on average 1.3944805194805194) internal successors, (859), 627 states have internal predecessors, (859), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-19 01:37:57,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1099 transitions. [2022-03-19 01:37:57,823 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1099 transitions. Word has length 48 [2022-03-19 01:37:57,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:57,823 INFO L478 AbstractCegarLoop]: Abstraction has 786 states and 1099 transitions. [2022-03-19 01:37:57,823 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 7 states have internal predecessors, (36), 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) [2022-03-19 01:37:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1099 transitions. [2022-03-19 01:37:57,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-19 01:37:57,826 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:57,826 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:57,826 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-19 01:37:57,826 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:57,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash 520235537, now seen corresponding path program 1 times [2022-03-19 01:37:57,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:57,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075393941] [2022-03-19 01:37:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:57,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:57,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:57,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:37:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:37:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:37:58,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:37:58,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075393941] [2022-03-19 01:37:58,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075393941] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:37:58,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:37:58,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 01:37:58,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763932690] [2022-03-19 01:37:58,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:37:58,002 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 01:37:58,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:37:58,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 01:37:58,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-19 01:37:58,002 INFO L87 Difference]: Start difference. First operand 786 states and 1099 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 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) [2022-03-19 01:37:59,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:37:59,781 INFO L93 Difference]: Finished difference Result 947 states and 1359 transitions. [2022-03-19 01:37:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 01:37:59,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 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 50 [2022-03-19 01:37:59,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:37:59,785 INFO L225 Difference]: With dead ends: 947 [2022-03-19 01:37:59,785 INFO L226 Difference]: Without dead ends: 919 [2022-03-19 01:37:59,785 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-03-19 01:37:59,786 INFO L912 BasicCegarLoop]: 649 mSDtfsCounter, 1533 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-19 01:37:59,786 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1444 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-19 01:37:59,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-03-19 01:37:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 789. [2022-03-19 01:37:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 619 states have (on average 1.394184168012924) internal successors, (863), 630 states have internal predecessors, (863), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-19 01:37:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1103 transitions. [2022-03-19 01:37:59,838 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1103 transitions. Word has length 50 [2022-03-19 01:37:59,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:37:59,838 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1103 transitions. [2022-03-19 01:37:59,838 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 6 states have internal predecessors, (38), 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) [2022-03-19 01:37:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1103 transitions. [2022-03-19 01:37:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-19 01:37:59,840 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:37:59,840 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:37:59,840 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-19 01:37:59,840 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:37:59,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:37:59,841 INFO L85 PathProgramCache]: Analyzing trace with hash -476836816, now seen corresponding path program 1 times [2022-03-19 01:37:59,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:37:59,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583284809] [2022-03-19 01:37:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:37:59,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:37:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:59,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:37:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:37:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:59,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:37:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:37:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:37:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:00,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:00,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583284809] [2022-03-19 01:38:00,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583284809] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:00,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:00,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:38:00,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334574405] [2022-03-19 01:38:00,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:00,025 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:38:00,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:00,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:38:00,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:38:00,026 INFO L87 Difference]: Start difference. First operand 789 states and 1103 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 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) [2022-03-19 01:38:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:02,278 INFO L93 Difference]: Finished difference Result 970 states and 1390 transitions. [2022-03-19 01:38:02,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 01:38:02,279 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 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 [2022-03-19 01:38:02,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:02,282 INFO L225 Difference]: With dead ends: 970 [2022-03-19 01:38:02,282 INFO L226 Difference]: Without dead ends: 906 [2022-03-19 01:38:02,282 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:38:02,283 INFO L912 BasicCegarLoop]: 649 mSDtfsCounter, 1874 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:02,283 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1883 Valid, 1520 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-19 01:38:02,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-03-19 01:38:02,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 784. [2022-03-19 01:38:02,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 614 states have (on average 1.3892508143322475) internal successors, (853), 625 states have internal predecessors, (853), 109 states have call successors, (109), 49 states have call predecessors, (109), 60 states have return successors, (131), 114 states have call predecessors, (131), 102 states have call successors, (131) [2022-03-19 01:38:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1093 transitions. [2022-03-19 01:38:02,339 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1093 transitions. Word has length 50 [2022-03-19 01:38:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:02,340 INFO L478 AbstractCegarLoop]: Abstraction has 784 states and 1093 transitions. [2022-03-19 01:38:02,340 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 8 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) [2022-03-19 01:38:02,340 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1093 transitions. [2022-03-19 01:38:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-19 01:38:02,342 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:02,342 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:02,342 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-19 01:38:02,342 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:02,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:02,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1976586256, now seen corresponding path program 1 times [2022-03-19 01:38:02,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:02,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938760610] [2022-03-19 01:38:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:02,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:02,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:02,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:38:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:02,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:02,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938760610] [2022-03-19 01:38:02,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938760610] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:02,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:02,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 01:38:02,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521994530] [2022-03-19 01:38:02,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:02,486 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 01:38:02,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:02,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 01:38:02,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-19 01:38:02,488 INFO L87 Difference]: Start difference. First operand 784 states and 1093 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-03-19 01:38:04,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:04,421 INFO L93 Difference]: Finished difference Result 1071 states and 1527 transitions. [2022-03-19 01:38:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 01:38:04,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 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 50 [2022-03-19 01:38:04,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:04,431 INFO L225 Difference]: With dead ends: 1071 [2022-03-19 01:38:04,431 INFO L226 Difference]: Without dead ends: 1060 [2022-03-19 01:38:04,432 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-03-19 01:38:04,432 INFO L912 BasicCegarLoop]: 796 mSDtfsCounter, 520 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:04,433 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1353 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1832 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-19 01:38:04,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-03-19 01:38:04,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 837. [2022-03-19 01:38:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 653 states have (on average 1.3721286370597243) internal successors, (896), 666 states have internal predecessors, (896), 111 states have call successors, (111), 51 states have call predecessors, (111), 72 states have return successors, (143), 126 states have call predecessors, (143), 104 states have call successors, (143) [2022-03-19 01:38:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1150 transitions. [2022-03-19 01:38:04,490 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1150 transitions. Word has length 50 [2022-03-19 01:38:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:04,491 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1150 transitions. [2022-03-19 01:38:04,491 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-03-19 01:38:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1150 transitions. [2022-03-19 01:38:04,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-19 01:38:04,492 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:04,493 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:04,493 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-19 01:38:04,493 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2001757018, now seen corresponding path program 1 times [2022-03-19 01:38:04,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:04,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759355420] [2022-03-19 01:38:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:04,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:04,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:04,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:04,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:04,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759355420] [2022-03-19 01:38:04,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759355420] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:04,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:04,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 01:38:04,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172353907] [2022-03-19 01:38:04,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:04,627 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 01:38:04,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 01:38:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-19 01:38:04,627 INFO L87 Difference]: Start difference. First operand 837 states and 1150 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 01:38:06,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:06,138 INFO L93 Difference]: Finished difference Result 982 states and 1391 transitions. [2022-03-19 01:38:06,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 01:38:06,139 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-03-19 01:38:06,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:06,142 INFO L225 Difference]: With dead ends: 982 [2022-03-19 01:38:06,142 INFO L226 Difference]: Without dead ends: 977 [2022-03-19 01:38:06,143 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-03-19 01:38:06,143 INFO L912 BasicCegarLoop]: 690 mSDtfsCounter, 823 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:06,143 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1378 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 01:38:06,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-03-19 01:38:06,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-03-19 01:38:06,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 668 states have (on average 1.3682634730538923) internal successors, (914), 682 states have internal predecessors, (914), 112 states have call successors, (112), 52 states have call predecessors, (112), 74 states have return successors, (145), 128 states have call predecessors, (145), 105 states have call successors, (145) [2022-03-19 01:38:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1171 transitions. [2022-03-19 01:38:06,205 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1171 transitions. Word has length 52 [2022-03-19 01:38:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:06,205 INFO L478 AbstractCegarLoop]: Abstraction has 855 states and 1171 transitions. [2022-03-19 01:38:06,205 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-03-19 01:38:06,205 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1171 transitions. [2022-03-19 01:38:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-19 01:38:06,207 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:06,207 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:06,207 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-19 01:38:06,207 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:06,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2085636174, now seen corresponding path program 1 times [2022-03-19 01:38:06,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:06,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687501045] [2022-03-19 01:38:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:06,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 01:38:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:06,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-03-19 01:38:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:06,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:06,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687501045] [2022-03-19 01:38:06,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687501045] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:06,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:06,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 01:38:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027702482] [2022-03-19 01:38:06,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:06,351 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 01:38:06,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:06,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 01:38:06,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-03-19 01:38:06,351 INFO L87 Difference]: Start difference. First operand 855 states and 1171 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 01:38:07,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:07,897 INFO L93 Difference]: Finished difference Result 1188 states and 1671 transitions. [2022-03-19 01:38:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:38:07,897 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 54 [2022-03-19 01:38:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:07,901 INFO L225 Difference]: With dead ends: 1188 [2022-03-19 01:38:07,901 INFO L226 Difference]: Without dead ends: 947 [2022-03-19 01:38:07,902 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-03-19 01:38:07,902 INFO L912 BasicCegarLoop]: 638 mSDtfsCounter, 1398 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:07,902 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 1164 Invalid, 1847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 01:38:07,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-03-19 01:38:07,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 827. [2022-03-19 01:38:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 647 states have (on average 1.3663060278207109) internal successors, (884), 659 states have internal predecessors, (884), 110 states have call successors, (110), 51 states have call predecessors, (110), 69 states have return successors, (140), 123 states have call predecessors, (140), 104 states have call successors, (140) [2022-03-19 01:38:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1134 transitions. [2022-03-19 01:38:07,964 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1134 transitions. Word has length 54 [2022-03-19 01:38:07,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:07,964 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1134 transitions. [2022-03-19 01:38:07,964 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 7 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 01:38:07,964 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1134 transitions. [2022-03-19 01:38:07,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-19 01:38:07,966 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:07,966 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:07,966 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-19 01:38:07,966 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:07,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:07,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1175170233, now seen corresponding path program 1 times [2022-03-19 01:38:07,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:07,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670748559] [2022-03-19 01:38:07,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:07,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:08,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:08,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:38:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:08,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:08,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:08,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670748559] [2022-03-19 01:38:08,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670748559] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:08,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:08,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:38:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894136588] [2022-03-19 01:38:08,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:08,139 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:38:08,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:08,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:38:08,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:38:08,140 INFO L87 Difference]: Start difference. First operand 827 states and 1134 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-03-19 01:38:10,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:10,218 INFO L93 Difference]: Finished difference Result 972 states and 1374 transitions. [2022-03-19 01:38:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 01:38:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 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 51 [2022-03-19 01:38:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:10,221 INFO L225 Difference]: With dead ends: 972 [2022-03-19 01:38:10,221 INFO L226 Difference]: Without dead ends: 968 [2022-03-19 01:38:10,221 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-19 01:38:10,222 INFO L912 BasicCegarLoop]: 704 mSDtfsCounter, 739 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 3845 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 4121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:10,222 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 2430 Invalid, 4121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3845 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-19 01:38:10,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-03-19 01:38:10,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 846. [2022-03-19 01:38:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 663 states have (on average 1.358974358974359) internal successors, (901), 676 states have internal predecessors, (901), 111 states have call successors, (111), 51 states have call predecessors, (111), 71 states have return successors, (143), 126 states have call predecessors, (143), 105 states have call successors, (143) [2022-03-19 01:38:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1155 transitions. [2022-03-19 01:38:10,285 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1155 transitions. Word has length 51 [2022-03-19 01:38:10,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:10,285 INFO L478 AbstractCegarLoop]: Abstraction has 846 states and 1155 transitions. [2022-03-19 01:38:10,285 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-03-19 01:38:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1155 transitions. [2022-03-19 01:38:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-19 01:38:10,287 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:10,287 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:10,287 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-19 01:38:10,287 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:10,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:10,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1175201977, now seen corresponding path program 1 times [2022-03-19 01:38:10,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:10,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171476247] [2022-03-19 01:38:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:10,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:10,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:38:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:10,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:10,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171476247] [2022-03-19 01:38:10,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171476247] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:10,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:10,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:38:10,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676883640] [2022-03-19 01:38:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:10,482 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:38:10,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:10,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:38:10,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:38:10,482 INFO L87 Difference]: Start difference. First operand 846 states and 1155 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-03-19 01:38:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:12,279 INFO L93 Difference]: Finished difference Result 981 states and 1385 transitions. [2022-03-19 01:38:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 01:38:12,279 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 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 51 [2022-03-19 01:38:12,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:12,283 INFO L225 Difference]: With dead ends: 981 [2022-03-19 01:38:12,283 INFO L226 Difference]: Without dead ends: 957 [2022-03-19 01:38:12,283 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-19 01:38:12,284 INFO L912 BasicCegarLoop]: 703 mSDtfsCounter, 1084 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 3506 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 3917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 3506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:12,284 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2337 Invalid, 3917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 3506 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-19 01:38:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-03-19 01:38:12,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-03-19 01:38:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.3634969325153374) internal successors, (889), 665 states have internal predecessors, (889), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-19 01:38:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1141 transitions. [2022-03-19 01:38:12,349 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1141 transitions. Word has length 51 [2022-03-19 01:38:12,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:12,349 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1141 transitions. [2022-03-19 01:38:12,349 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-03-19 01:38:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1141 transitions. [2022-03-19 01:38:12,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-19 01:38:12,353 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:12,353 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:12,353 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-19 01:38:12,353 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:12,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1955463855, now seen corresponding path program 1 times [2022-03-19 01:38:12,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:12,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601582566] [2022-03-19 01:38:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:12,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:12,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:12,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:12,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:12,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:12,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:12,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:12,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601582566] [2022-03-19 01:38:12,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601582566] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:12,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:12,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 01:38:12,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121751042] [2022-03-19 01:38:12,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:12,573 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 01:38:12,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:12,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 01:38:12,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-19 01:38:12,573 INFO L87 Difference]: Start difference. First operand 833 states and 1141 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:14,719 INFO L93 Difference]: Finished difference Result 963 states and 1362 transitions. [2022-03-19 01:38:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 01:38:14,720 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 53 [2022-03-19 01:38:14,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:14,723 INFO L225 Difference]: With dead ends: 963 [2022-03-19 01:38:14,723 INFO L226 Difference]: Without dead ends: 957 [2022-03-19 01:38:14,723 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:38:14,724 INFO L912 BasicCegarLoop]: 653 mSDtfsCounter, 1943 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:14,724 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 1594 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2618 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-19 01:38:14,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-03-19 01:38:14,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-03-19 01:38:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 652 states have (on average 1.361963190184049) internal successors, (888), 665 states have internal predecessors, (888), 111 states have call successors, (111), 51 states have call predecessors, (111), 69 states have return successors, (141), 124 states have call predecessors, (141), 105 states have call successors, (141) [2022-03-19 01:38:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1140 transitions. [2022-03-19 01:38:14,797 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1140 transitions. Word has length 53 [2022-03-19 01:38:14,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:14,797 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1140 transitions. [2022-03-19 01:38:14,798 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1140 transitions. [2022-03-19 01:38:14,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-19 01:38:14,801 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:14,801 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:14,801 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-19 01:38:14,801 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:14,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1151246814, now seen corresponding path program 1 times [2022-03-19 01:38:14,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:14,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288713902] [2022-03-19 01:38:14,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:14,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:14,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:14,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:14,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:38:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:14,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:14,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:14,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288713902] [2022-03-19 01:38:14,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288713902] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:14,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:14,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 01:38:14,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410375460] [2022-03-19 01:38:14,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:14,936 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 01:38:14,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:14,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 01:38:14,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-19 01:38:14,936 INFO L87 Difference]: Start difference. First operand 833 states and 1140 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 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) [2022-03-19 01:38:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:16,523 INFO L93 Difference]: Finished difference Result 967 states and 1365 transitions. [2022-03-19 01:38:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 01:38:16,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 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 52 [2022-03-19 01:38:16,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:16,526 INFO L225 Difference]: With dead ends: 967 [2022-03-19 01:38:16,527 INFO L226 Difference]: Without dead ends: 931 [2022-03-19 01:38:16,527 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-03-19 01:38:16,527 INFO L912 BasicCegarLoop]: 656 mSDtfsCounter, 1920 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:16,527 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 1257 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1466 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-19 01:38:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-03-19 01:38:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 805. [2022-03-19 01:38:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.370429252782194) internal successors, (862), 641 states have internal predecessors, (862), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-19 01:38:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1108 transitions. [2022-03-19 01:38:16,587 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1108 transitions. Word has length 52 [2022-03-19 01:38:16,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:16,587 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1108 transitions. [2022-03-19 01:38:16,587 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 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) [2022-03-19 01:38:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1108 transitions. [2022-03-19 01:38:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-03-19 01:38:16,588 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:16,589 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:16,589 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-19 01:38:16,589 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:16,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash -437720056, now seen corresponding path program 1 times [2022-03-19 01:38:16,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:16,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280097235] [2022-03-19 01:38:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:16,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:16,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:16,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:16,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:16,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:16,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280097235] [2022-03-19 01:38:16,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280097235] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:16,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:16,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 01:38:16,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482078412] [2022-03-19 01:38:16,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:16,821 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 01:38:16,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:16,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 01:38:16,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-19 01:38:16,822 INFO L87 Difference]: Start difference. First operand 805 states and 1108 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:18,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:18,704 INFO L93 Difference]: Finished difference Result 933 states and 1327 transitions. [2022-03-19 01:38:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 01:38:18,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2022-03-19 01:38:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:18,707 INFO L225 Difference]: With dead ends: 933 [2022-03-19 01:38:18,707 INFO L226 Difference]: Without dead ends: 927 [2022-03-19 01:38:18,708 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:38:18,708 INFO L912 BasicCegarLoop]: 624 mSDtfsCounter, 2275 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:18,708 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 1245 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-19 01:38:18,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-03-19 01:38:18,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 805. [2022-03-19 01:38:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 629 states have (on average 1.368839427662957) internal successors, (861), 641 states have internal predecessors, (861), 108 states have call successors, (108), 49 states have call predecessors, (108), 67 states have return successors, (138), 121 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-19 01:38:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1107 transitions. [2022-03-19 01:38:18,774 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1107 transitions. Word has length 54 [2022-03-19 01:38:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:18,774 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1107 transitions. [2022-03-19 01:38:18,778 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:18,778 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1107 transitions. [2022-03-19 01:38:18,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 01:38:18,781 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:18,781 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:18,781 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-19 01:38:18,781 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:18,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1268427453, now seen corresponding path program 1 times [2022-03-19 01:38:18,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:18,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183706556] [2022-03-19 01:38:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:18,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:19,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:19,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:19,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183706556] [2022-03-19 01:38:19,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183706556] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:19,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:19,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 01:38:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979445808] [2022-03-19 01:38:19,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:19,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 01:38:19,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:19,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 01:38:19,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:38:19,125 INFO L87 Difference]: Start difference. First operand 805 states and 1107 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:21,704 INFO L93 Difference]: Finished difference Result 956 states and 1356 transitions. [2022-03-19 01:38:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 01:38:21,705 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 55 [2022-03-19 01:38:21,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:21,708 INFO L225 Difference]: With dead ends: 956 [2022-03-19 01:38:21,708 INFO L226 Difference]: Without dead ends: 916 [2022-03-19 01:38:21,708 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:38:21,709 INFO L912 BasicCegarLoop]: 675 mSDtfsCounter, 415 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 4990 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 5159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:21,709 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 2685 Invalid, 5159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 4990 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 01:38:21,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-03-19 01:38:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 796. [2022-03-19 01:38:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 622 states have (on average 1.3520900321543408) internal successors, (841), 634 states have internal predecessors, (841), 106 states have call successors, (106), 49 states have call predecessors, (106), 67 states have return successors, (136), 119 states have call predecessors, (136), 100 states have call successors, (136) [2022-03-19 01:38:21,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1083 transitions. [2022-03-19 01:38:21,775 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1083 transitions. Word has length 55 [2022-03-19 01:38:21,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:21,775 INFO L478 AbstractCegarLoop]: Abstraction has 796 states and 1083 transitions. [2022-03-19 01:38:21,775 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1083 transitions. [2022-03-19 01:38:21,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-19 01:38:21,779 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:21,779 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:21,779 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-03-19 01:38:21,779 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:21,779 INFO L85 PathProgramCache]: Analyzing trace with hash -406359554, now seen corresponding path program 1 times [2022-03-19 01:38:21,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:21,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74142457] [2022-03-19 01:38:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:21,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:21,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 01:38:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:21,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:21,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:21,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74142457] [2022-03-19 01:38:21,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74142457] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:21,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:21,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 01:38:21,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956733177] [2022-03-19 01:38:21,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:21,979 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 01:38:21,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:21,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 01:38:21,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:38:21,979 INFO L87 Difference]: Start difference. First operand 796 states and 1083 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 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) [2022-03-19 01:38:24,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:24,044 INFO L93 Difference]: Finished difference Result 932 states and 1310 transitions. [2022-03-19 01:38:24,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 01:38:24,045 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 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 55 [2022-03-19 01:38:24,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:24,047 INFO L225 Difference]: With dead ends: 932 [2022-03-19 01:38:24,048 INFO L226 Difference]: Without dead ends: 914 [2022-03-19 01:38:24,048 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-19 01:38:24,048 INFO L912 BasicCegarLoop]: 670 mSDtfsCounter, 1311 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:24,051 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 2700 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-19 01:38:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-03-19 01:38:24,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 794. [2022-03-19 01:38:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 621 states have (on average 1.3510466988727858) internal successors, (839), 633 states have internal predecessors, (839), 105 states have call successors, (105), 49 states have call predecessors, (105), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-03-19 01:38:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1079 transitions. [2022-03-19 01:38:24,130 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1079 transitions. Word has length 55 [2022-03-19 01:38:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:24,130 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1079 transitions. [2022-03-19 01:38:24,131 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 7 states have internal predecessors, (41), 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) [2022-03-19 01:38:24,131 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1079 transitions. [2022-03-19 01:38:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 01:38:24,133 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:24,133 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:24,133 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-03-19 01:38:24,133 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:24,133 INFO L85 PathProgramCache]: Analyzing trace with hash 301163047, now seen corresponding path program 1 times [2022-03-19 01:38:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:24,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113285997] [2022-03-19 01:38:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:24,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:24,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:38:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:24,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:38:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:24,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:24,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113285997] [2022-03-19 01:38:24,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113285997] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:24,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:24,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 01:38:24,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906900759] [2022-03-19 01:38:24,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:24,347 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 01:38:24,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:24,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 01:38:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-19 01:38:24,347 INFO L87 Difference]: Start difference. First operand 794 states and 1079 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:26,285 INFO L93 Difference]: Finished difference Result 979 states and 1361 transitions. [2022-03-19 01:38:26,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 01:38:26,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-03-19 01:38:26,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:26,288 INFO L225 Difference]: With dead ends: 979 [2022-03-19 01:38:26,288 INFO L226 Difference]: Without dead ends: 936 [2022-03-19 01:38:26,289 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-03-19 01:38:26,289 INFO L912 BasicCegarLoop]: 680 mSDtfsCounter, 1870 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:26,289 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1880 Valid, 1301 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-19 01:38:26,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2022-03-19 01:38:26,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 794. [2022-03-19 01:38:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 621 states have (on average 1.3494363929146538) internal successors, (838), 633 states have internal predecessors, (838), 105 states have call successors, (105), 49 states have call predecessors, (105), 67 states have return successors, (135), 118 states have call predecessors, (135), 99 states have call successors, (135) [2022-03-19 01:38:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1078 transitions. [2022-03-19 01:38:26,363 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1078 transitions. Word has length 56 [2022-03-19 01:38:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:26,364 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1078 transitions. [2022-03-19 01:38:26,364 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 4 states have internal predecessors, (42), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1078 transitions. [2022-03-19 01:38:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-19 01:38:26,366 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:26,366 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:26,366 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-03-19 01:38:26,367 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:26,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:26,367 INFO L85 PathProgramCache]: Analyzing trace with hash -979957660, now seen corresponding path program 1 times [2022-03-19 01:38:26,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:26,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269536525] [2022-03-19 01:38:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:26,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:26,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:26,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:26,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 01:38:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:38:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:26,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:26,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:26,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:26,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269536525] [2022-03-19 01:38:26,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269536525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:26,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:26,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 01:38:26,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213418835] [2022-03-19 01:38:26,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:26,620 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 01:38:26,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:26,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 01:38:26,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:38:26,621 INFO L87 Difference]: Start difference. First operand 794 states and 1078 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 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) [2022-03-19 01:38:29,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:29,148 INFO L93 Difference]: Finished difference Result 927 states and 1302 transitions. [2022-03-19 01:38:29,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 01:38:29,149 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 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 56 [2022-03-19 01:38:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:29,152 INFO L225 Difference]: With dead ends: 927 [2022-03-19 01:38:29,152 INFO L226 Difference]: Without dead ends: 909 [2022-03-19 01:38:29,152 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-19 01:38:29,153 INFO L912 BasicCegarLoop]: 653 mSDtfsCounter, 656 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 5084 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 5352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 5084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:29,153 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 2611 Invalid, 5352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 5084 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 01:38:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-03-19 01:38:29,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 789. [2022-03-19 01:38:29,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 618 states have (on average 1.3495145631067962) internal successors, (834), 630 states have internal predecessors, (834), 104 states have call successors, (104), 49 states have call predecessors, (104), 66 states have return successors, (133), 116 states have call predecessors, (133), 98 states have call successors, (133) [2022-03-19 01:38:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1071 transitions. [2022-03-19 01:38:29,216 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1071 transitions. Word has length 56 [2022-03-19 01:38:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:29,216 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1071 transitions. [2022-03-19 01:38:29,216 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 7 states have internal predecessors, (42), 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) [2022-03-19 01:38:29,216 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1071 transitions. [2022-03-19 01:38:29,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 01:38:29,221 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:29,221 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-19 01:38:29,221 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-03-19 01:38:29,221 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:29,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:29,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1342046640, now seen corresponding path program 1 times [2022-03-19 01:38:29,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:29,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520979655] [2022-03-19 01:38:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:29,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 01:38:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:29,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-03-19 01:38:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:29,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:38:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:29,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:38:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:29,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:29,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:29,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520979655] [2022-03-19 01:38:29,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520979655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:29,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:29,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 01:38:29,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730398281] [2022-03-19 01:38:29,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:29,365 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 01:38:29,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:29,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 01:38:29,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-19 01:38:29,366 INFO L87 Difference]: Start difference. First operand 789 states and 1071 transitions. Second operand has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-19 01:38:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:30,736 INFO L93 Difference]: Finished difference Result 1224 states and 1667 transitions. [2022-03-19 01:38:30,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:38:30,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-03-19 01:38:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:30,739 INFO L225 Difference]: With dead ends: 1224 [2022-03-19 01:38:30,740 INFO L226 Difference]: Without dead ends: 778 [2022-03-19 01:38:30,741 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-03-19 01:38:30,741 INFO L912 BasicCegarLoop]: 530 mSDtfsCounter, 1719 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:30,741 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 946 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-19 01:38:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-03-19 01:38:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2022-03-19 01:38:30,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 609 states have (on average 1.341543513957307) internal successors, (817), 620 states have internal predecessors, (817), 103 states have call successors, (103), 49 states have call predecessors, (103), 65 states have return successors, (122), 115 states have call predecessors, (122), 97 states have call successors, (122) [2022-03-19 01:38:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1042 transitions. [2022-03-19 01:38:30,807 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1042 transitions. Word has length 73 [2022-03-19 01:38:30,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:30,807 INFO L478 AbstractCegarLoop]: Abstraction has 778 states and 1042 transitions. [2022-03-19 01:38:30,807 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.909090909090909) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-19 01:38:30,807 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1042 transitions. [2022-03-19 01:38:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 01:38:30,809 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:30,809 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-19 01:38:30,809 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-19 01:38:30,809 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:30,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:30,809 INFO L85 PathProgramCache]: Analyzing trace with hash 687939260, now seen corresponding path program 1 times [2022-03-19 01:38:30,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:30,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637827558] [2022-03-19 01:38:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 01:38:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 01:38:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:30,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:38:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:30,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:38:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:30,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:30,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637827558] [2022-03-19 01:38:30,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637827558] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 01:38:30,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702760707] [2022-03-19 01:38:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:30,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:38:30,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 01:38:30,955 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) [2022-03-19 01:38:30,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 01:38:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:31,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-19 01:38:31,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 01:38:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:31,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 01:38:31,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:31,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702760707] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-19 01:38:31,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-19 01:38:31,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 15 [2022-03-19 01:38:31,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583216932] [2022-03-19 01:38:31,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:31,704 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 01:38:31,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:31,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 01:38:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:38:31,704 INFO L87 Difference]: Start difference. First operand 778 states and 1042 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:38:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:32,088 INFO L93 Difference]: Finished difference Result 1087 states and 1442 transitions. [2022-03-19 01:38:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 01:38:32,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-03-19 01:38:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:32,092 INFO L225 Difference]: With dead ends: 1087 [2022-03-19 01:38:32,092 INFO L226 Difference]: Without dead ends: 923 [2022-03-19 01:38:32,092 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 151 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-03-19 01:38:32,093 INFO L912 BasicCegarLoop]: 685 mSDtfsCounter, 761 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:32,093 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 1572 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 01:38:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-03-19 01:38:32,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 816. [2022-03-19 01:38:32,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 640 states have (on average 1.340625) internal successors, (858), 651 states have internal predecessors, (858), 106 states have call successors, (106), 51 states have call predecessors, (106), 69 states have return successors, (128), 120 states have call predecessors, (128), 100 states have call successors, (128) [2022-03-19 01:38:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1092 transitions. [2022-03-19 01:38:32,169 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1092 transitions. Word has length 74 [2022-03-19 01:38:32,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:32,170 INFO L478 AbstractCegarLoop]: Abstraction has 816 states and 1092 transitions. [2022-03-19 01:38:32,170 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:38:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1092 transitions. [2022-03-19 01:38:32,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-19 01:38:32,171 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:32,171 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:32,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 01:38:32,395 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,SelfDestructingSolverStorable26 [2022-03-19 01:38:32,396 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:32,396 INFO L85 PathProgramCache]: Analyzing trace with hash -917115183, now seen corresponding path program 1 times [2022-03-19 01:38:32,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:32,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227884535] [2022-03-19 01:38:32,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:32,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:32,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:38:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:32,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:38:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:32,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:32,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227884535] [2022-03-19 01:38:32,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227884535] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:32,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:32,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-19 01:38:32,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187257564] [2022-03-19 01:38:32,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:32,684 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-19 01:38:32,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:32,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-19 01:38:32,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:38:32,684 INFO L87 Difference]: Start difference. First operand 816 states and 1092 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-19 01:38:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:35,311 INFO L93 Difference]: Finished difference Result 842 states and 1120 transitions. [2022-03-19 01:38:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 01:38:35,312 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2022-03-19 01:38:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:35,314 INFO L225 Difference]: With dead ends: 842 [2022-03-19 01:38:35,314 INFO L226 Difference]: Without dead ends: 817 [2022-03-19 01:38:35,315 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-19 01:38:35,315 INFO L912 BasicCegarLoop]: 565 mSDtfsCounter, 1662 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 5876 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 6467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 5876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:35,315 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1665 Valid, 2300 Invalid, 6467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 5876 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-19 01:38:35,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-03-19 01:38:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 815. [2022-03-19 01:38:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 639 states have (on average 1.325508607198748) internal successors, (847), 650 states have internal predecessors, (847), 106 states have call successors, (106), 51 states have call predecessors, (106), 69 states have return successors, (128), 120 states have call predecessors, (128), 100 states have call successors, (128) [2022-03-19 01:38:35,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1081 transitions. [2022-03-19 01:38:35,388 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1081 transitions. Word has length 59 [2022-03-19 01:38:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:35,388 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1081 transitions. [2022-03-19 01:38:35,388 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 10 states have internal predecessors, (43), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-19 01:38:35,388 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1081 transitions. [2022-03-19 01:38:35,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-03-19 01:38:35,389 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:35,390 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:35,390 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-03-19 01:38:35,390 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1794647803, now seen corresponding path program 1 times [2022-03-19 01:38:35,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:35,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197641877] [2022-03-19 01:38:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:35,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:35,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:35,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:35,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:35,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:35,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:35,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:35,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:35,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:35,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197641877] [2022-03-19 01:38:35,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197641877] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:35,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:35,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 01:38:35,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864397190] [2022-03-19 01:38:35,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:35,655 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 01:38:35,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:35,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 01:38:35,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-03-19 01:38:35,656 INFO L87 Difference]: Start difference. First operand 815 states and 1081 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 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) [2022-03-19 01:38:38,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:38,028 INFO L93 Difference]: Finished difference Result 832 states and 1099 transitions. [2022-03-19 01:38:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 01:38:38,028 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 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 [2022-03-19 01:38:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:38,031 INFO L225 Difference]: With dead ends: 832 [2022-03-19 01:38:38,031 INFO L226 Difference]: Without dead ends: 812 [2022-03-19 01:38:38,032 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-03-19 01:38:38,036 INFO L912 BasicCegarLoop]: 576 mSDtfsCounter, 941 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 4967 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 5303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 4967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:38,036 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 2124 Invalid, 5303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 4967 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-19 01:38:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-03-19 01:38:38,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2022-03-19 01:38:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 637 states have (on average 1.3249607535321821) internal successors, (844), 648 states have internal predecessors, (844), 105 states have call successors, (105), 51 states have call predecessors, (105), 69 states have return successors, (127), 119 states have call predecessors, (127), 99 states have call successors, (127) [2022-03-19 01:38:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1076 transitions. [2022-03-19 01:38:38,125 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1076 transitions. Word has length 58 [2022-03-19 01:38:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:38,126 INFO L478 AbstractCegarLoop]: Abstraction has 812 states and 1076 transitions. [2022-03-19 01:38:38,126 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 8 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) [2022-03-19 01:38:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1076 transitions. [2022-03-19 01:38:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-19 01:38:38,127 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:38,127 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:38,127 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-19 01:38:38,128 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1644249478, now seen corresponding path program 1 times [2022-03-19 01:38:38,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:38,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010641845] [2022-03-19 01:38:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:38,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:38,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:38,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:38,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:38,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:38,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 01:38:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:38,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:38,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010641845] [2022-03-19 01:38:38,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010641845] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:38,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:38,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 01:38:38,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65155298] [2022-03-19 01:38:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:38,317 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 01:38:38,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 01:38:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-19 01:38:38,317 INFO L87 Difference]: Start difference. First operand 812 states and 1076 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:40,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:40,381 INFO L93 Difference]: Finished difference Result 865 states and 1131 transitions. [2022-03-19 01:38:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 01:38:40,382 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 59 [2022-03-19 01:38:40,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:40,384 INFO L225 Difference]: With dead ends: 865 [2022-03-19 01:38:40,384 INFO L226 Difference]: Without dead ends: 800 [2022-03-19 01:38:40,384 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-19 01:38:40,385 INFO L912 BasicCegarLoop]: 552 mSDtfsCounter, 962 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 4119 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 4470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 4119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:40,385 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 1784 Invalid, 4470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 4119 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-19 01:38:40,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-03-19 01:38:40,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2022-03-19 01:38:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 628 states have (on average 1.320063694267516) internal successors, (829), 639 states have internal predecessors, (829), 102 states have call successors, (102), 51 states have call predecessors, (102), 69 states have return successors, (124), 116 states have call predecessors, (124), 96 states have call successors, (124) [2022-03-19 01:38:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1055 transitions. [2022-03-19 01:38:40,450 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1055 transitions. Word has length 59 [2022-03-19 01:38:40,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:40,450 INFO L478 AbstractCegarLoop]: Abstraction has 800 states and 1055 transitions. [2022-03-19 01:38:40,450 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:40,450 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1055 transitions. [2022-03-19 01:38:40,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 01:38:40,452 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:40,452 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:40,452 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-19 01:38:40,452 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:40,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash -887424146, now seen corresponding path program 1 times [2022-03-19 01:38:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:40,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653399561] [2022-03-19 01:38:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:40,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:40,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:40,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:40,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:40,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:38:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:38:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 01:38:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:40,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:40,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653399561] [2022-03-19 01:38:40,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653399561] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:40,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:40,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 01:38:40,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553422672] [2022-03-19 01:38:40,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:40,635 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 01:38:40,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:40,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 01:38:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-03-19 01:38:40,636 INFO L87 Difference]: Start difference. First operand 800 states and 1055 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:38:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:41,932 INFO L93 Difference]: Finished difference Result 950 states and 1263 transitions. [2022-03-19 01:38:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 01:38:41,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-03-19 01:38:41,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:41,935 INFO L225 Difference]: With dead ends: 950 [2022-03-19 01:38:41,935 INFO L226 Difference]: Without dead ends: 845 [2022-03-19 01:38:41,935 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-19 01:38:41,935 INFO L912 BasicCegarLoop]: 540 mSDtfsCounter, 1602 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:41,936 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 1098 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-19 01:38:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-03-19 01:38:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 807. [2022-03-19 01:38:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 633 states have (on average 1.320695102685624) internal successors, (836), 645 states have internal predecessors, (836), 103 states have call successors, (103), 51 states have call predecessors, (103), 70 states have return successors, (131), 117 states have call predecessors, (131), 97 states have call successors, (131) [2022-03-19 01:38:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1070 transitions. [2022-03-19 01:38:42,002 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1070 transitions. Word has length 60 [2022-03-19 01:38:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:42,002 INFO L478 AbstractCegarLoop]: Abstraction has 807 states and 1070 transitions. [2022-03-19 01:38:42,002 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:38:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1070 transitions. [2022-03-19 01:38:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 01:38:42,004 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:42,004 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:42,004 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-03-19 01:38:42,004 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:42,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1397439309, now seen corresponding path program 1 times [2022-03-19 01:38:42,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:42,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122702787] [2022-03-19 01:38:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:42,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:42,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:42,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:42,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:42,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:38:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:38:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 01:38:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:42,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:42,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122702787] [2022-03-19 01:38:42,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122702787] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:42,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:42,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 01:38:42,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158601458] [2022-03-19 01:38:42,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:42,257 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 01:38:42,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:42,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 01:38:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-19 01:38:42,258 INFO L87 Difference]: Start difference. First operand 807 states and 1070 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:38:44,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:44,156 INFO L93 Difference]: Finished difference Result 829 states and 1093 transitions. [2022-03-19 01:38:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 01:38:44,157 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-03-19 01:38:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:44,159 INFO L225 Difference]: With dead ends: 829 [2022-03-19 01:38:44,159 INFO L226 Difference]: Without dead ends: 805 [2022-03-19 01:38:44,159 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:38:44,160 INFO L912 BasicCegarLoop]: 558 mSDtfsCounter, 359 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 3976 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 4094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:44,160 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 1940 Invalid, 4094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3976 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-19 01:38:44,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-03-19 01:38:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2022-03-19 01:38:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 632 states have (on average 1.3196202531645569) internal successors, (834), 644 states have internal predecessors, (834), 102 states have call successors, (102), 51 states have call predecessors, (102), 70 states have return successors, (130), 116 states have call predecessors, (130), 96 states have call successors, (130) [2022-03-19 01:38:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1066 transitions. [2022-03-19 01:38:44,224 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1066 transitions. Word has length 60 [2022-03-19 01:38:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:44,224 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1066 transitions. [2022-03-19 01:38:44,224 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 7 states have internal predecessors, (44), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:38:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1066 transitions. [2022-03-19 01:38:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 01:38:44,235 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:44,235 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:44,235 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-03-19 01:38:44,236 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:44,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash 303583592, now seen corresponding path program 1 times [2022-03-19 01:38:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:44,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937845372] [2022-03-19 01:38:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:44,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-19 01:38:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:44,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:44,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937845372] [2022-03-19 01:38:44,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937845372] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:44,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:44,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 01:38:44,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926928904] [2022-03-19 01:38:44,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:44,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 01:38:44,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:44,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 01:38:44,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-19 01:38:44,410 INFO L87 Difference]: Start difference. First operand 805 states and 1066 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:45,623 INFO L93 Difference]: Finished difference Result 839 states and 1100 transitions. [2022-03-19 01:38:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 01:38:45,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-03-19 01:38:45,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:45,625 INFO L225 Difference]: With dead ends: 839 [2022-03-19 01:38:45,626 INFO L226 Difference]: Without dead ends: 807 [2022-03-19 01:38:45,626 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-03-19 01:38:45,626 INFO L912 BasicCegarLoop]: 538 mSDtfsCounter, 1228 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:45,626 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 1127 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-19 01:38:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-03-19 01:38:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 805. [2022-03-19 01:38:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 632 states have (on average 1.3180379746835442) internal successors, (833), 644 states have internal predecessors, (833), 102 states have call successors, (102), 51 states have call predecessors, (102), 70 states have return successors, (130), 116 states have call predecessors, (130), 96 states have call successors, (130) [2022-03-19 01:38:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1065 transitions. [2022-03-19 01:38:45,702 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1065 transitions. Word has length 60 [2022-03-19 01:38:45,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:45,702 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1065 transitions. [2022-03-19 01:38:45,703 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 8 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1065 transitions. [2022-03-19 01:38:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-19 01:38:45,704 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:45,704 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:45,704 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-19 01:38:45,704 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:45,705 INFO L85 PathProgramCache]: Analyzing trace with hash 48847047, now seen corresponding path program 1 times [2022-03-19 01:38:45,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:45,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100516815] [2022-03-19 01:38:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:45,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:45,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:45,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:45,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:45,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-19 01:38:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:45,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:45,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100516815] [2022-03-19 01:38:45,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100516815] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:45,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:45,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 01:38:45,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292169994] [2022-03-19 01:38:45,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:45,932 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 01:38:45,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:45,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 01:38:45,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-03-19 01:38:45,933 INFO L87 Difference]: Start difference. First operand 805 states and 1065 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:47,752 INFO L93 Difference]: Finished difference Result 838 states and 1104 transitions. [2022-03-19 01:38:47,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 01:38:47,752 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2022-03-19 01:38:47,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:47,754 INFO L225 Difference]: With dead ends: 838 [2022-03-19 01:38:47,754 INFO L226 Difference]: Without dead ends: 797 [2022-03-19 01:38:47,755 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-03-19 01:38:47,755 INFO L912 BasicCegarLoop]: 552 mSDtfsCounter, 1278 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 3482 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 3929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:47,755 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 1768 Invalid, 3929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3482 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-19 01:38:47,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-03-19 01:38:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2022-03-19 01:38:47,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3130990415335464) internal successors, (822), 638 states have internal predecessors, (822), 100 states have call successors, (100), 51 states have call predecessors, (100), 70 states have return successors, (128), 114 states have call predecessors, (128), 94 states have call successors, (128) [2022-03-19 01:38:47,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1050 transitions. [2022-03-19 01:38:47,820 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1050 transitions. Word has length 60 [2022-03-19 01:38:47,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:47,820 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1050 transitions. [2022-03-19 01:38:47,821 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (8), 8 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-19 01:38:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1050 transitions. [2022-03-19 01:38:47,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-19 01:38:47,822 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:47,822 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:47,822 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-03-19 01:38:47,822 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:47,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:47,823 INFO L85 PathProgramCache]: Analyzing trace with hash 330565666, now seen corresponding path program 1 times [2022-03-19 01:38:47,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:47,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58475651] [2022-03-19 01:38:47,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:47,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:47,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:48,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:48,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:48,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:38:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:48,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:38:48,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:48,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-19 01:38:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:48,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:48,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58475651] [2022-03-19 01:38:48,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58475651] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:48,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:48,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:38:48,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187811353] [2022-03-19 01:38:48,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:48,088 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:38:48,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:48,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:38:48,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:38:48,089 INFO L87 Difference]: Start difference. First operand 797 states and 1050 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:38:49,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:49,544 INFO L93 Difference]: Finished difference Result 845 states and 1118 transitions. [2022-03-19 01:38:49,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:38:49,544 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2022-03-19 01:38:49,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:49,546 INFO L225 Difference]: With dead ends: 845 [2022-03-19 01:38:49,547 INFO L226 Difference]: Without dead ends: 811 [2022-03-19 01:38:49,547 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:38:49,547 INFO L912 BasicCegarLoop]: 522 mSDtfsCounter, 1213 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:49,547 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 1295 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-19 01:38:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-03-19 01:38:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 801. [2022-03-19 01:38:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 628 states have (on average 1.3121019108280254) internal successors, (824), 642 states have internal predecessors, (824), 100 states have call successors, (100), 51 states have call predecessors, (100), 72 states have return successors, (144), 114 states have call predecessors, (144), 94 states have call successors, (144) [2022-03-19 01:38:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1068 transitions. [2022-03-19 01:38:49,613 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1068 transitions. Word has length 61 [2022-03-19 01:38:49,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:49,613 INFO L478 AbstractCegarLoop]: Abstraction has 801 states and 1068 transitions. [2022-03-19 01:38:49,613 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:38:49,613 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1068 transitions. [2022-03-19 01:38:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-19 01:38:49,615 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:49,615 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:49,615 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-19 01:38:49,615 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:49,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:49,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1992943065, now seen corresponding path program 1 times [2022-03-19 01:38:49,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:49,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334622464] [2022-03-19 01:38:49,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:49,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:49,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:49,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:49,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:38:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:49,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:38:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:49,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:49,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:49,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334622464] [2022-03-19 01:38:49,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334622464] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:49,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:49,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-19 01:38:49,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59091324] [2022-03-19 01:38:49,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:49,935 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-19 01:38:49,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:49,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-19 01:38:49,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-19 01:38:49,936 INFO L87 Difference]: Start difference. First operand 801 states and 1068 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 01:38:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:52,062 INFO L93 Difference]: Finished difference Result 825 states and 1093 transitions. [2022-03-19 01:38:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 01:38:52,063 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-03-19 01:38:52,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:52,072 INFO L225 Difference]: With dead ends: 825 [2022-03-19 01:38:52,072 INFO L226 Difference]: Without dead ends: 801 [2022-03-19 01:38:52,073 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-19 01:38:52,073 INFO L912 BasicCegarLoop]: 527 mSDtfsCounter, 695 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 4862 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 5101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:52,073 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 2244 Invalid, 5101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4862 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-19 01:38:52,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-03-19 01:38:52,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 799. [2022-03-19 01:38:52,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 627 states have (on average 1.3110047846889952) internal successors, (822), 641 states have internal predecessors, (822), 99 states have call successors, (99), 51 states have call predecessors, (99), 72 states have return successors, (143), 113 states have call predecessors, (143), 93 states have call successors, (143) [2022-03-19 01:38:52,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1064 transitions. [2022-03-19 01:38:52,153 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1064 transitions. Word has length 67 [2022-03-19 01:38:52,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:52,153 INFO L478 AbstractCegarLoop]: Abstraction has 799 states and 1064 transitions. [2022-03-19 01:38:52,153 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 10 states have internal predecessors, (49), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 01:38:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1064 transitions. [2022-03-19 01:38:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-19 01:38:52,154 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:52,155 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:52,155 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-19 01:38:52,155 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:52,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:52,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1749867339, now seen corresponding path program 1 times [2022-03-19 01:38:52,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:52,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363392814] [2022-03-19 01:38:52,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:52,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:52,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:52,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:52,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:38:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 01:38:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:52,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:52,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:52,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363392814] [2022-03-19 01:38:52,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363392814] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:52,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:52,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-19 01:38:52,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287215362] [2022-03-19 01:38:52,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:52,442 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-19 01:38:52,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-19 01:38:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:38:52,443 INFO L87 Difference]: Start difference. First operand 799 states and 1064 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-19 01:38:54,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:54,643 INFO L93 Difference]: Finished difference Result 823 states and 1089 transitions. [2022-03-19 01:38:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 01:38:54,644 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2022-03-19 01:38:54,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:54,646 INFO L225 Difference]: With dead ends: 823 [2022-03-19 01:38:54,646 INFO L226 Difference]: Without dead ends: 799 [2022-03-19 01:38:54,660 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-19 01:38:54,660 INFO L912 BasicCegarLoop]: 504 mSDtfsCounter, 935 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 4836 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 5169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 4836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:54,661 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 2015 Invalid, 5169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 4836 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-19 01:38:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-03-19 01:38:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 797. [2022-03-19 01:38:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 626 states have (on average 1.3099041533546325) internal successors, (820), 640 states have internal predecessors, (820), 98 states have call successors, (98), 51 states have call predecessors, (98), 72 states have return successors, (142), 112 states have call predecessors, (142), 92 states have call successors, (142) [2022-03-19 01:38:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1060 transitions. [2022-03-19 01:38:54,726 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1060 transitions. Word has length 62 [2022-03-19 01:38:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:54,726 INFO L478 AbstractCegarLoop]: Abstraction has 797 states and 1060 transitions. [2022-03-19 01:38:54,726 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-19 01:38:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1060 transitions. [2022-03-19 01:38:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-19 01:38:54,728 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:54,728 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:54,728 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-19 01:38:54,728 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:54,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash -418163084, now seen corresponding path program 1 times [2022-03-19 01:38:54,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:54,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739314883] [2022-03-19 01:38:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:54,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:54,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:54,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:54,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:38:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:38:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:54,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:55,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:55,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739314883] [2022-03-19 01:38:55,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739314883] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:55,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:55,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-19 01:38:55,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488644302] [2022-03-19 01:38:55,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:55,024 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-19 01:38:55,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:55,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-19 01:38:55,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:38:55,025 INFO L87 Difference]: Start difference. First operand 797 states and 1060 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:38:57,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:57,319 INFO L93 Difference]: Finished difference Result 814 states and 1078 transitions. [2022-03-19 01:38:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 01:38:57,320 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2022-03-19 01:38:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:57,322 INFO L225 Difference]: With dead ends: 814 [2022-03-19 01:38:57,322 INFO L226 Difference]: Without dead ends: 792 [2022-03-19 01:38:57,322 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-03-19 01:38:57,323 INFO L912 BasicCegarLoop]: 527 mSDtfsCounter, 600 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 5247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:57,323 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 2277 Invalid, 5247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 5039 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-19 01:38:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-03-19 01:38:57,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 792. [2022-03-19 01:38:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 623 states have (on average 1.3097913322632424) internal successors, (816), 637 states have internal predecessors, (816), 97 states have call successors, (97), 51 states have call predecessors, (97), 71 states have return successors, (140), 110 states have call predecessors, (140), 91 states have call successors, (140) [2022-03-19 01:38:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1053 transitions. [2022-03-19 01:38:57,396 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1053 transitions. Word has length 63 [2022-03-19 01:38:57,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:57,396 INFO L478 AbstractCegarLoop]: Abstraction has 792 states and 1053 transitions. [2022-03-19 01:38:57,396 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 9 states have internal predecessors, (47), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:38:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1053 transitions. [2022-03-19 01:38:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-19 01:38:57,398 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:57,398 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:57,398 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-19 01:38:57,398 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:57,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:57,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2020935180, now seen corresponding path program 1 times [2022-03-19 01:38:57,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:57,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922062287] [2022-03-19 01:38:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:57,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:57,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:57,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:38:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:57,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:38:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:57,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:38:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:38:57,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:38:57,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922062287] [2022-03-19 01:38:57,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922062287] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:38:57,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:38:57,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-19 01:38:57,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441187137] [2022-03-19 01:38:57,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:38:57,647 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-19 01:38:57,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:38:57,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-19 01:38:57,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:38:57,647 INFO L87 Difference]: Start difference. First operand 792 states and 1053 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:38:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:38:59,758 INFO L93 Difference]: Finished difference Result 809 states and 1071 transitions. [2022-03-19 01:38:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 01:38:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-03-19 01:38:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:38:59,760 INFO L225 Difference]: With dead ends: 809 [2022-03-19 01:38:59,760 INFO L226 Difference]: Without dead ends: 787 [2022-03-19 01:38:59,761 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-19 01:38:59,761 INFO L912 BasicCegarLoop]: 517 mSDtfsCounter, 1161 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 5747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 5341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-19 01:38:59,761 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 2262 Invalid, 5747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-19 01:38:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-19 01:38:59,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2022-03-19 01:38:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 620 states have (on average 1.3096774193548386) internal successors, (812), 634 states have internal predecessors, (812), 96 states have call successors, (96), 51 states have call predecessors, (96), 70 states have return successors, (138), 108 states have call predecessors, (138), 90 states have call successors, (138) [2022-03-19 01:38:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1046 transitions. [2022-03-19 01:38:59,825 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1046 transitions. Word has length 62 [2022-03-19 01:38:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:38:59,825 INFO L478 AbstractCegarLoop]: Abstraction has 787 states and 1046 transitions. [2022-03-19 01:38:59,825 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:38:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1046 transitions. [2022-03-19 01:38:59,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-19 01:38:59,827 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:38:59,827 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:38:59,827 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-19 01:38:59,827 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:38:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:38:59,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1508171679, now seen corresponding path program 1 times [2022-03-19 01:38:59,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:38:59,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111448196] [2022-03-19 01:38:59,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:38:59,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:38:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:59,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:38:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:59,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:38:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:38:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:59,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:38:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:38:59,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:38:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-19 01:39:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:00,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111448196] [2022-03-19 01:39:00,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111448196] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:00,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:00,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-19 01:39:00,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841302348] [2022-03-19 01:39:00,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:00,095 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-19 01:39:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-19 01:39:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-19 01:39:00,096 INFO L87 Difference]: Start difference. First operand 787 states and 1046 transitions. Second operand has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 01:39:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:02,419 INFO L93 Difference]: Finished difference Result 811 states and 1071 transitions. [2022-03-19 01:39:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 01:39:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2022-03-19 01:39:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:02,422 INFO L225 Difference]: With dead ends: 811 [2022-03-19 01:39:02,422 INFO L226 Difference]: Without dead ends: 787 [2022-03-19 01:39:02,422 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-19 01:39:02,423 INFO L912 BasicCegarLoop]: 513 mSDtfsCounter, 1250 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 5566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:02,423 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 2338 Invalid, 5566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [426 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-19 01:39:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-03-19 01:39:02,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 785. [2022-03-19 01:39:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 619 states have (on average 1.308562197092084) internal successors, (810), 633 states have internal predecessors, (810), 95 states have call successors, (95), 51 states have call predecessors, (95), 70 states have return successors, (137), 107 states have call predecessors, (137), 89 states have call successors, (137) [2022-03-19 01:39:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1042 transitions. [2022-03-19 01:39:02,485 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1042 transitions. Word has length 66 [2022-03-19 01:39:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:02,485 INFO L478 AbstractCegarLoop]: Abstraction has 785 states and 1042 transitions. [2022-03-19 01:39:02,485 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.4) internal successors, (48), 10 states have internal predecessors, (48), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 01:39:02,485 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1042 transitions. [2022-03-19 01:39:02,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-19 01:39:02,486 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:02,487 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:02,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-19 01:39:02,487 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:02,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash 136312337, now seen corresponding path program 1 times [2022-03-19 01:39:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:02,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622827074] [2022-03-19 01:39:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:02,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:02,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:02,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:02,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:02,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 01:39:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:02,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:02,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622827074] [2022-03-19 01:39:02,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622827074] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:02,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:02,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-19 01:39:02,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026641007] [2022-03-19 01:39:02,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:02,756 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-19 01:39:02,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:02,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-19 01:39:02,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:39:02,758 INFO L87 Difference]: Start difference. First operand 785 states and 1042 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-19 01:39:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:05,049 INFO L93 Difference]: Finished difference Result 807 states and 1065 transitions. [2022-03-19 01:39:05,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 01:39:05,050 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2022-03-19 01:39:05,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:05,052 INFO L225 Difference]: With dead ends: 807 [2022-03-19 01:39:05,052 INFO L226 Difference]: Without dead ends: 783 [2022-03-19 01:39:05,052 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2022-03-19 01:39:05,052 INFO L912 BasicCegarLoop]: 490 mSDtfsCounter, 909 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 5233 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 5233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:05,052 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 2124 Invalid, 5548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 5233 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-19 01:39:05,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-03-19 01:39:05,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2022-03-19 01:39:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 618 states have (on average 1.307443365695793) internal successors, (808), 632 states have internal predecessors, (808), 94 states have call successors, (94), 51 states have call predecessors, (94), 70 states have return successors, (136), 106 states have call predecessors, (136), 88 states have call successors, (136) [2022-03-19 01:39:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1038 transitions. [2022-03-19 01:39:05,117 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1038 transitions. Word has length 63 [2022-03-19 01:39:05,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:05,118 INFO L478 AbstractCegarLoop]: Abstraction has 783 states and 1038 transitions. [2022-03-19 01:39:05,118 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 10 states have internal predecessors, (47), 4 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-19 01:39:05,118 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1038 transitions. [2022-03-19 01:39:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-19 01:39:05,119 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:05,119 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:05,119 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-19 01:39:05,119 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash 982595257, now seen corresponding path program 1 times [2022-03-19 01:39:05,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:05,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87088288] [2022-03-19 01:39:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:05,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:05,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:05,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:05,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 01:39:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:05,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:05,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87088288] [2022-03-19 01:39:05,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87088288] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:05,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:05,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 01:39:05,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626908764] [2022-03-19 01:39:05,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:05,252 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 01:39:05,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:05,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 01:39:05,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-19 01:39:05,253 INFO L87 Difference]: Start difference. First operand 783 states and 1038 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:06,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:06,251 INFO L93 Difference]: Finished difference Result 1050 states and 1393 transitions. [2022-03-19 01:39:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 01:39:06,251 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-03-19 01:39:06,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:06,253 INFO L225 Difference]: With dead ends: 1050 [2022-03-19 01:39:06,253 INFO L226 Difference]: Without dead ends: 724 [2022-03-19 01:39:06,254 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-03-19 01:39:06,254 INFO L912 BasicCegarLoop]: 483 mSDtfsCounter, 597 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:06,254 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 852 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-19 01:39:06,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-03-19 01:39:06,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 675. [2022-03-19 01:39:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 533 states have (on average 1.2926829268292683) internal successors, (689), 547 states have internal predecessors, (689), 81 states have call successors, (81), 45 states have call predecessors, (81), 60 states have return successors, (100), 89 states have call predecessors, (100), 75 states have call successors, (100) [2022-03-19 01:39:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 870 transitions. [2022-03-19 01:39:06,310 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 870 transitions. Word has length 63 [2022-03-19 01:39:06,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:06,310 INFO L478 AbstractCegarLoop]: Abstraction has 675 states and 870 transitions. [2022-03-19 01:39:06,310 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:06,310 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 870 transitions. [2022-03-19 01:39:06,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-19 01:39:06,311 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:06,312 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-19 01:39:06,312 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-19 01:39:06,312 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:06,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash 274863522, now seen corresponding path program 1 times [2022-03-19 01:39:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:06,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206347167] [2022-03-19 01:39:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:06,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:06,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:06,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 01:39:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:06,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-03-19 01:39:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:06,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:06,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:06,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:06,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206347167] [2022-03-19 01:39:06,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206347167] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 01:39:06,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758082416] [2022-03-19 01:39:06,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:06,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:39:06,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 01:39:06,437 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) [2022-03-19 01:39:06,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 01:39:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:06,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-19 01:39:06,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 01:39:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:06,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 01:39:06,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758082416] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:06,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 01:39:06,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-03-19 01:39:06,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017140738] [2022-03-19 01:39:06,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:06,704 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 01:39:06,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:06,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 01:39:06,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-19 01:39:06,705 INFO L87 Difference]: Start difference. First operand 675 states and 870 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:06,771 INFO L93 Difference]: Finished difference Result 812 states and 1036 transitions. [2022-03-19 01:39:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 01:39:06,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-03-19 01:39:06,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:06,773 INFO L225 Difference]: With dead ends: 812 [2022-03-19 01:39:06,773 INFO L226 Difference]: Without dead ends: 729 [2022-03-19 01:39:06,774 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-19 01:39:06,780 INFO L912 BasicCegarLoop]: 593 mSDtfsCounter, 113 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:06,781 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1097 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 01:39:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-03-19 01:39:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 706. [2022-03-19 01:39:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 558 states have (on average 1.2939068100358424) internal successors, (722), 571 states have internal predecessors, (722), 83 states have call successors, (83), 48 states have call predecessors, (83), 64 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-03-19 01:39:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 909 transitions. [2022-03-19 01:39:06,841 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 909 transitions. Word has length 80 [2022-03-19 01:39:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:06,842 INFO L478 AbstractCegarLoop]: Abstraction has 706 states and 909 transitions. [2022-03-19 01:39:06,842 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 909 transitions. [2022-03-19 01:39:06,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-19 01:39:06,843 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:06,843 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:06,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 01:39:07,062 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,SelfDestructingSolverStorable42 [2022-03-19 01:39:07,062 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:07,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1864492088, now seen corresponding path program 1 times [2022-03-19 01:39:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:07,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055397050] [2022-03-19 01:39:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:07,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 01:39:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:07,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:07,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055397050] [2022-03-19 01:39:07,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055397050] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:07,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:07,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 01:39:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893660369] [2022-03-19 01:39:07,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:07,219 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 01:39:07,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 01:39:07,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-19 01:39:07,219 INFO L87 Difference]: Start difference. First operand 706 states and 909 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 01:39:08,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:08,115 INFO L93 Difference]: Finished difference Result 826 states and 1065 transitions. [2022-03-19 01:39:08,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 01:39:08,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 66 [2022-03-19 01:39:08,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:08,117 INFO L225 Difference]: With dead ends: 826 [2022-03-19 01:39:08,118 INFO L226 Difference]: Without dead ends: 706 [2022-03-19 01:39:08,118 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-19 01:39:08,118 INFO L912 BasicCegarLoop]: 459 mSDtfsCounter, 1152 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:08,119 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 886 Invalid, 1272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 01:39:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-03-19 01:39:08,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2022-03-19 01:39:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 558 states have (on average 1.2885304659498207) internal successors, (719), 571 states have internal predecessors, (719), 83 states have call successors, (83), 48 states have call predecessors, (83), 64 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-03-19 01:39:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 906 transitions. [2022-03-19 01:39:08,177 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 906 transitions. Word has length 66 [2022-03-19 01:39:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:08,177 INFO L478 AbstractCegarLoop]: Abstraction has 706 states and 906 transitions. [2022-03-19 01:39:08,177 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 01:39:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 906 transitions. [2022-03-19 01:39:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-03-19 01:39:08,178 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:08,178 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:08,178 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-03-19 01:39:08,178 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash 531525074, now seen corresponding path program 1 times [2022-03-19 01:39:08,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:08,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902242028] [2022-03-19 01:39:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:08,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:08,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:08,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:08,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:08,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:08,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902242028] [2022-03-19 01:39:08,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902242028] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:08,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:08,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:39:08,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309372596] [2022-03-19 01:39:08,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:08,369 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:39:08,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:08,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:39:08,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:08,370 INFO L87 Difference]: Start difference. First operand 706 states and 906 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-19 01:39:09,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:09,594 INFO L93 Difference]: Finished difference Result 770 states and 982 transitions. [2022-03-19 01:39:09,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-19 01:39:09,594 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-03-19 01:39:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:09,596 INFO L225 Difference]: With dead ends: 770 [2022-03-19 01:39:09,596 INFO L226 Difference]: Without dead ends: 737 [2022-03-19 01:39:09,596 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-03-19 01:39:09,599 INFO L912 BasicCegarLoop]: 467 mSDtfsCounter, 1026 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:09,599 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 1012 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-19 01:39:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-03-19 01:39:09,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 712. [2022-03-19 01:39:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 563 states have (on average 1.2877442273534636) internal successors, (725), 576 states have internal predecessors, (725), 84 states have call successors, (84), 48 states have call predecessors, (84), 64 states have return successors, (105), 94 states have call predecessors, (105), 79 states have call successors, (105) [2022-03-19 01:39:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 914 transitions. [2022-03-19 01:39:09,675 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 914 transitions. Word has length 65 [2022-03-19 01:39:09,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:09,676 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 914 transitions. [2022-03-19 01:39:09,676 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-19 01:39:09,676 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 914 transitions. [2022-03-19 01:39:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-19 01:39:09,677 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:09,678 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:09,678 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-19 01:39:09,678 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:09,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash -925827221, now seen corresponding path program 1 times [2022-03-19 01:39:09,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:09,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019239530] [2022-03-19 01:39:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:09,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:09,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:09,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 01:39:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:09,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:09,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019239530] [2022-03-19 01:39:09,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019239530] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:09,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:09,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:39:09,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977808233] [2022-03-19 01:39:09,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:09,831 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:39:09,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:09,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:39:09,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:09,832 INFO L87 Difference]: Start difference. First operand 712 states and 914 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:11,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:11,030 INFO L93 Difference]: Finished difference Result 768 states and 975 transitions. [2022-03-19 01:39:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 01:39:11,031 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-19 01:39:11,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:11,032 INFO L225 Difference]: With dead ends: 768 [2022-03-19 01:39:11,032 INFO L226 Difference]: Without dead ends: 714 [2022-03-19 01:39:11,033 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-03-19 01:39:11,033 INFO L912 BasicCegarLoop]: 473 mSDtfsCounter, 873 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:11,033 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1011 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-19 01:39:11,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-03-19 01:39:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 712. [2022-03-19 01:39:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 563 states have (on average 1.2841918294849024) internal successors, (723), 576 states have internal predecessors, (723), 84 states have call successors, (84), 48 states have call predecessors, (84), 64 states have return successors, (105), 94 states have call predecessors, (105), 79 states have call successors, (105) [2022-03-19 01:39:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 912 transitions. [2022-03-19 01:39:11,099 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 912 transitions. Word has length 66 [2022-03-19 01:39:11,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:11,100 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 912 transitions. [2022-03-19 01:39:11,100 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:11,100 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 912 transitions. [2022-03-19 01:39:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-03-19 01:39:11,101 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:11,101 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:11,101 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-19 01:39:11,101 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:11,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash -575027284, now seen corresponding path program 1 times [2022-03-19 01:39:11,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:11,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039988142] [2022-03-19 01:39:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:11,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:11,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:11,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:11,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:11,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 01:39:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:11,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:11,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039988142] [2022-03-19 01:39:11,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039988142] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:11,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:11,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-03-19 01:39:11,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015638292] [2022-03-19 01:39:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:11,289 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-19 01:39:11,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:11,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-19 01:39:11,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-19 01:39:11,289 INFO L87 Difference]: Start difference. First operand 712 states and 912 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:13,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:13,012 INFO L93 Difference]: Finished difference Result 739 states and 942 transitions. [2022-03-19 01:39:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 01:39:13,013 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-03-19 01:39:13,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:13,014 INFO L225 Difference]: With dead ends: 739 [2022-03-19 01:39:13,014 INFO L226 Difference]: Without dead ends: 681 [2022-03-19 01:39:13,015 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:39:13,015 INFO L912 BasicCegarLoop]: 476 mSDtfsCounter, 614 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:13,015 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [617 Valid, 1777 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-19 01:39:13,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-03-19 01:39:13,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 675. [2022-03-19 01:39:13,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 533 states have (on average 1.2701688555347093) internal successors, (677), 546 states have internal predecessors, (677), 77 states have call successors, (77), 48 states have call predecessors, (77), 64 states have return successors, (97), 87 states have call predecessors, (97), 72 states have call successors, (97) [2022-03-19 01:39:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 851 transitions. [2022-03-19 01:39:13,068 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 851 transitions. Word has length 66 [2022-03-19 01:39:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:13,068 INFO L478 AbstractCegarLoop]: Abstraction has 675 states and 851 transitions. [2022-03-19 01:39:13,069 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 7 states have internal predecessors, (50), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 851 transitions. [2022-03-19 01:39:13,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-19 01:39:13,070 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:13,070 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:13,070 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-19 01:39:13,070 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:13,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:13,070 INFO L85 PathProgramCache]: Analyzing trace with hash -329926322, now seen corresponding path program 1 times [2022-03-19 01:39:13,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:13,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605921082] [2022-03-19 01:39:13,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:13,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:13,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:13,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:13,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:13,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-19 01:39:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:13,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:13,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605921082] [2022-03-19 01:39:13,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605921082] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:13,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:13,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:39:13,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105772089] [2022-03-19 01:39:13,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:13,227 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:39:13,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:13,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:39:13,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:13,227 INFO L87 Difference]: Start difference. First operand 675 states and 851 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:14,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:14,233 INFO L93 Difference]: Finished difference Result 709 states and 886 transitions. [2022-03-19 01:39:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:39:14,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-03-19 01:39:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:14,235 INFO L225 Difference]: With dead ends: 709 [2022-03-19 01:39:14,235 INFO L226 Difference]: Without dead ends: 670 [2022-03-19 01:39:14,235 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:39:14,235 INFO L912 BasicCegarLoop]: 423 mSDtfsCounter, 529 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:14,235 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 950 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 01:39:14,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-03-19 01:39:14,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2022-03-19 01:39:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 529 states have (on average 1.270321361058601) internal successors, (672), 542 states have internal predecessors, (672), 76 states have call successors, (76), 48 states have call predecessors, (76), 64 states have return successors, (96), 86 states have call predecessors, (96), 71 states have call successors, (96) [2022-03-19 01:39:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 844 transitions. [2022-03-19 01:39:14,288 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 844 transitions. Word has length 67 [2022-03-19 01:39:14,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:14,288 INFO L478 AbstractCegarLoop]: Abstraction has 670 states and 844 transitions. [2022-03-19 01:39:14,289 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 844 transitions. [2022-03-19 01:39:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-03-19 01:39:14,290 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:14,290 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:14,290 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-19 01:39:14,290 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:14,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:14,290 INFO L85 PathProgramCache]: Analyzing trace with hash 872575031, now seen corresponding path program 1 times [2022-03-19 01:39:14,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:14,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99151791] [2022-03-19 01:39:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:14,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:14,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:14,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:14,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:14,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:14,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:14,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:14,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99151791] [2022-03-19 01:39:14,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99151791] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:14,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:14,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 01:39:14,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247707041] [2022-03-19 01:39:14,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:14,448 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 01:39:14,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:14,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 01:39:14,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-03-19 01:39:14,448 INFO L87 Difference]: Start difference. First operand 670 states and 844 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:39:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:15,326 INFO L93 Difference]: Finished difference Result 777 states and 975 transitions. [2022-03-19 01:39:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 01:39:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 67 [2022-03-19 01:39:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:15,332 INFO L225 Difference]: With dead ends: 777 [2022-03-19 01:39:15,333 INFO L226 Difference]: Without dead ends: 769 [2022-03-19 01:39:15,333 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-03-19 01:39:15,334 INFO L912 BasicCegarLoop]: 417 mSDtfsCounter, 1192 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:15,334 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1201 Valid, 774 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 01:39:15,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-03-19 01:39:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 712. [2022-03-19 01:39:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 561 states have (on average 1.2638146167557933) internal successors, (709), 576 states have internal predecessors, (709), 78 states have call successors, (78), 50 states have call predecessors, (78), 72 states have return successors, (104), 94 states have call predecessors, (104), 73 states have call successors, (104) [2022-03-19 01:39:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 891 transitions. [2022-03-19 01:39:15,391 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 891 transitions. Word has length 67 [2022-03-19 01:39:15,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:15,392 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 891 transitions. [2022-03-19 01:39:15,392 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (9), 9 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:39:15,392 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 891 transitions. [2022-03-19 01:39:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-19 01:39:15,393 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:15,393 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:15,393 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-19 01:39:15,393 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:15,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:15,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1310592370, now seen corresponding path program 1 times [2022-03-19 01:39:15,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:15,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386233165] [2022-03-19 01:39:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:15,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:15,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:15,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:15,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386233165] [2022-03-19 01:39:15,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386233165] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:15,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:15,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:39:15,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209556091] [2022-03-19 01:39:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:15,545 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:39:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:39:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:15,545 INFO L87 Difference]: Start difference. First operand 712 states and 891 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:16,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:16,853 INFO L93 Difference]: Finished difference Result 773 states and 969 transitions. [2022-03-19 01:39:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 01:39:16,853 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-03-19 01:39:16,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:16,854 INFO L225 Difference]: With dead ends: 773 [2022-03-19 01:39:16,855 INFO L226 Difference]: Without dead ends: 767 [2022-03-19 01:39:16,856 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:39:16,856 INFO L912 BasicCegarLoop]: 419 mSDtfsCounter, 1496 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:16,856 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1503 Valid, 819 Invalid, 1909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-19 01:39:16,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-03-19 01:39:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 712. [2022-03-19 01:39:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 561 states have (on average 1.2620320855614973) internal successors, (708), 576 states have internal predecessors, (708), 78 states have call successors, (78), 50 states have call predecessors, (78), 72 states have return successors, (104), 94 states have call predecessors, (104), 73 states have call successors, (104) [2022-03-19 01:39:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 890 transitions. [2022-03-19 01:39:16,917 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 890 transitions. Word has length 68 [2022-03-19 01:39:16,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:16,917 INFO L478 AbstractCegarLoop]: Abstraction has 712 states and 890 transitions. [2022-03-19 01:39:16,918 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:16,918 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 890 transitions. [2022-03-19 01:39:16,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-03-19 01:39:16,919 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:16,919 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:16,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-19 01:39:16,919 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:16,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1966008401, now seen corresponding path program 1 times [2022-03-19 01:39:16,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:16,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587762005] [2022-03-19 01:39:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:17,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:17,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:17,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 01:39:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 01:39:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:17,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:17,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587762005] [2022-03-19 01:39:17,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587762005] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:17,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:17,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-19 01:39:17,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027077725] [2022-03-19 01:39:17,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:17,247 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-19 01:39:17,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:17,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-19 01:39:17,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-03-19 01:39:17,248 INFO L87 Difference]: Start difference. First operand 712 states and 890 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 01:39:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:19,438 INFO L93 Difference]: Finished difference Result 736 states and 916 transitions. [2022-03-19 01:39:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 01:39:19,438 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-03-19 01:39:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:19,440 INFO L225 Difference]: With dead ends: 736 [2022-03-19 01:39:19,440 INFO L226 Difference]: Without dead ends: 709 [2022-03-19 01:39:19,440 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-03-19 01:39:19,441 INFO L912 BasicCegarLoop]: 428 mSDtfsCounter, 1446 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 4950 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 5462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 4950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:19,441 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1448 Valid, 2531 Invalid, 5462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 4950 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-19 01:39:19,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-03-19 01:39:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2022-03-19 01:39:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 559 states have (on average 1.2611806797853309) internal successors, (705), 574 states have internal predecessors, (705), 77 states have call successors, (77), 50 states have call predecessors, (77), 72 states have return successors, (103), 93 states have call predecessors, (103), 72 states have call successors, (103) [2022-03-19 01:39:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 885 transitions. [2022-03-19 01:39:19,500 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 885 transitions. Word has length 70 [2022-03-19 01:39:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:19,500 INFO L478 AbstractCegarLoop]: Abstraction has 709 states and 885 transitions. [2022-03-19 01:39:19,501 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 11 states have internal predecessors, (52), 4 states have call successors, (10), 10 states have call predecessors, (10), 5 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 01:39:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 885 transitions. [2022-03-19 01:39:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 01:39:19,502 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:19,502 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:19,502 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-19 01:39:19,502 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:19,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:19,502 INFO L85 PathProgramCache]: Analyzing trace with hash -771243238, now seen corresponding path program 1 times [2022-03-19 01:39:19,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:19,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857764288] [2022-03-19 01:39:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:19,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:19,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:19,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 01:39:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:19,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:19,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:19,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857764288] [2022-03-19 01:39:19,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857764288] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:19,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:19,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-19 01:39:19,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758235371] [2022-03-19 01:39:19,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:19,780 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-19 01:39:19,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:19,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-19 01:39:19,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:39:19,781 INFO L87 Difference]: Start difference. First operand 709 states and 885 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:39:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:21,775 INFO L93 Difference]: Finished difference Result 729 states and 906 transitions. [2022-03-19 01:39:21,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 01:39:21,776 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-03-19 01:39:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:21,777 INFO L225 Difference]: With dead ends: 729 [2022-03-19 01:39:21,777 INFO L226 Difference]: Without dead ends: 707 [2022-03-19 01:39:21,777 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-19 01:39:21,778 INFO L912 BasicCegarLoop]: 424 mSDtfsCounter, 239 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 4495 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 4582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:21,778 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2030 Invalid, 4582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4495 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-19 01:39:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-03-19 01:39:21,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2022-03-19 01:39:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 558 states have (on average 1.2598566308243728) internal successors, (703), 573 states have internal predecessors, (703), 76 states have call successors, (76), 50 states have call predecessors, (76), 72 states have return successors, (102), 92 states have call predecessors, (102), 71 states have call successors, (102) [2022-03-19 01:39:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 881 transitions. [2022-03-19 01:39:21,837 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 881 transitions. Word has length 72 [2022-03-19 01:39:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:21,837 INFO L478 AbstractCegarLoop]: Abstraction has 707 states and 881 transitions. [2022-03-19 01:39:21,837 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 9 states have internal predecessors, (56), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:39:21,837 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 881 transitions. [2022-03-19 01:39:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 01:39:21,838 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:21,838 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:21,838 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-19 01:39:21,838 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:21,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:21,839 INFO L85 PathProgramCache]: Analyzing trace with hash 667549759, now seen corresponding path program 1 times [2022-03-19 01:39:21,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:21,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652029650] [2022-03-19 01:39:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:21,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:21,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:22,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-19 01:39:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:22,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:22,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:22,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652029650] [2022-03-19 01:39:22,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652029650] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:22,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:22,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-19 01:39:22,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373351336] [2022-03-19 01:39:22,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:22,160 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-19 01:39:22,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:22,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-19 01:39:22,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:39:22,161 INFO L87 Difference]: Start difference. First operand 707 states and 881 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:39:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:23,844 INFO L93 Difference]: Finished difference Result 724 states and 899 transitions. [2022-03-19 01:39:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 01:39:23,845 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-19 01:39:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:23,846 INFO L225 Difference]: With dead ends: 724 [2022-03-19 01:39:23,846 INFO L226 Difference]: Without dead ends: 695 [2022-03-19 01:39:23,847 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-03-19 01:39:23,847 INFO L912 BasicCegarLoop]: 417 mSDtfsCounter, 467 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 4087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:23,847 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 1935 Invalid, 4087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-19 01:39:23,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2022-03-19 01:39:23,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2022-03-19 01:39:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 549 states have (on average 1.2604735883424407) internal successors, (692), 564 states have internal predecessors, (692), 74 states have call successors, (74), 50 states have call predecessors, (74), 71 states have return successors, (99), 89 states have call predecessors, (99), 69 states have call successors, (99) [2022-03-19 01:39:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 865 transitions. [2022-03-19 01:39:23,906 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 865 transitions. Word has length 69 [2022-03-19 01:39:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:23,906 INFO L478 AbstractCegarLoop]: Abstraction has 695 states and 865 transitions. [2022-03-19 01:39:23,906 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (9), 8 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:39:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 865 transitions. [2022-03-19 01:39:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 01:39:23,907 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:23,907 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:23,907 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-19 01:39:23,907 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:23,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:23,907 INFO L85 PathProgramCache]: Analyzing trace with hash -914202014, now seen corresponding path program 1 times [2022-03-19 01:39:23,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:23,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691875022] [2022-03-19 01:39:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:23,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:23,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:24,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 01:39:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:39:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:24,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:24,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691875022] [2022-03-19 01:39:24,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691875022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:24,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:24,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:39:24,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918079353] [2022-03-19 01:39:24,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:24,053 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:39:24,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:24,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:39:24,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:24,054 INFO L87 Difference]: Start difference. First operand 695 states and 865 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:24,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:24,979 INFO L93 Difference]: Finished difference Result 729 states and 900 transitions. [2022-03-19 01:39:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:39:24,979 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-19 01:39:24,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:24,981 INFO L225 Difference]: With dead ends: 729 [2022-03-19 01:39:24,981 INFO L226 Difference]: Without dead ends: 690 [2022-03-19 01:39:24,981 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:39:24,981 INFO L912 BasicCegarLoop]: 398 mSDtfsCounter, 495 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:24,982 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 920 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 01:39:24,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-03-19 01:39:25,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2022-03-19 01:39:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 545 states have (on average 1.2605504587155962) internal successors, (687), 560 states have internal predecessors, (687), 73 states have call successors, (73), 50 states have call predecessors, (73), 71 states have return successors, (98), 88 states have call predecessors, (98), 68 states have call successors, (98) [2022-03-19 01:39:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 858 transitions. [2022-03-19 01:39:25,048 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 858 transitions. Word has length 69 [2022-03-19 01:39:25,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:25,048 INFO L478 AbstractCegarLoop]: Abstraction has 690 states and 858 transitions. [2022-03-19 01:39:25,048 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:25,048 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 858 transitions. [2022-03-19 01:39:25,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 01:39:25,049 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:25,049 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:25,049 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-19 01:39:25,049 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:25,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash -761466943, now seen corresponding path program 1 times [2022-03-19 01:39:25,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:25,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122202489] [2022-03-19 01:39:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:25,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:25,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-19 01:39:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:25,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:39:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:25,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:25,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122202489] [2022-03-19 01:39:25,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122202489] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:25,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:25,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 01:39:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951828718] [2022-03-19 01:39:25,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:25,365 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 01:39:25,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:25,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 01:39:25,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-19 01:39:25,365 INFO L87 Difference]: Start difference. First operand 690 states and 858 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:26,989 INFO L93 Difference]: Finished difference Result 717 states and 888 transitions. [2022-03-19 01:39:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 01:39:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-19 01:39:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:26,991 INFO L225 Difference]: With dead ends: 717 [2022-03-19 01:39:26,991 INFO L226 Difference]: Without dead ends: 687 [2022-03-19 01:39:26,992 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-03-19 01:39:26,992 INFO L912 BasicCegarLoop]: 413 mSDtfsCounter, 702 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:26,992 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 1878 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 01:39:26,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-03-19 01:39:27,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2022-03-19 01:39:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 543 states have (on average 1.2596685082872927) internal successors, (684), 558 states have internal predecessors, (684), 72 states have call successors, (72), 50 states have call predecessors, (72), 71 states have return successors, (97), 87 states have call predecessors, (97), 67 states have call successors, (97) [2022-03-19 01:39:27,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 853 transitions. [2022-03-19 01:39:27,062 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 853 transitions. Word has length 69 [2022-03-19 01:39:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:27,062 INFO L478 AbstractCegarLoop]: Abstraction has 687 states and 853 transitions. [2022-03-19 01:39:27,062 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 5 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:27,062 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 853 transitions. [2022-03-19 01:39:27,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 01:39:27,063 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:27,064 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:27,064 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-19 01:39:27,064 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:27,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:27,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1045116325, now seen corresponding path program 1 times [2022-03-19 01:39:27,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:27,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343685572] [2022-03-19 01:39:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:27,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:27,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:27,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:27,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:27,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:27,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:27,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:27,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343685572] [2022-03-19 01:39:27,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343685572] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:27,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:27,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:39:27,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351180780] [2022-03-19 01:39:27,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:27,263 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:39:27,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:27,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:39:27,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:27,263 INFO L87 Difference]: Start difference. First operand 687 states and 853 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:28,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:28,394 INFO L93 Difference]: Finished difference Result 746 states and 928 transitions. [2022-03-19 01:39:28,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 01:39:28,395 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-03-19 01:39:28,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:28,396 INFO L225 Difference]: With dead ends: 746 [2022-03-19 01:39:28,396 INFO L226 Difference]: Without dead ends: 742 [2022-03-19 01:39:28,397 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-03-19 01:39:28,397 INFO L912 BasicCegarLoop]: 370 mSDtfsCounter, 1443 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:28,397 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 718 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 01:39:28,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-03-19 01:39:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 685. [2022-03-19 01:39:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 541 states have (on average 1.2587800369685767) internal successors, (681), 556 states have internal predecessors, (681), 72 states have call successors, (72), 50 states have call predecessors, (72), 71 states have return successors, (97), 87 states have call predecessors, (97), 67 states have call successors, (97) [2022-03-19 01:39:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 850 transitions. [2022-03-19 01:39:28,456 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 850 transitions. Word has length 69 [2022-03-19 01:39:28,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:28,456 INFO L478 AbstractCegarLoop]: Abstraction has 685 states and 850 transitions. [2022-03-19 01:39:28,456 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:28,456 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 850 transitions. [2022-03-19 01:39:28,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 01:39:28,457 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:28,457 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:28,457 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-19 01:39:28,457 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:28,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:28,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1045148069, now seen corresponding path program 1 times [2022-03-19 01:39:28,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:28,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116227252] [2022-03-19 01:39:28,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:28,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:28,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:28,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:28,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:28,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:28,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116227252] [2022-03-19 01:39:28,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116227252] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:28,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:28,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 01:39:28,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651601547] [2022-03-19 01:39:28,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:28,678 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 01:39:28,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:28,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 01:39:28,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-03-19 01:39:28,679 INFO L87 Difference]: Start difference. First operand 685 states and 850 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:39:30,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:30,237 INFO L93 Difference]: Finished difference Result 695 states and 859 transitions. [2022-03-19 01:39:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-19 01:39:30,238 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2022-03-19 01:39:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:30,239 INFO L225 Difference]: With dead ends: 695 [2022-03-19 01:39:30,239 INFO L226 Difference]: Without dead ends: 633 [2022-03-19 01:39:30,239 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-03-19 01:39:30,240 INFO L912 BasicCegarLoop]: 361 mSDtfsCounter, 330 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:30,240 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1499 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 01:39:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-03-19 01:39:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 629. [2022-03-19 01:39:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 495 states have (on average 1.2505050505050506) internal successors, (619), 508 states have internal predecessors, (619), 70 states have call successors, (70), 48 states have call predecessors, (70), 63 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-03-19 01:39:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 778 transitions. [2022-03-19 01:39:30,292 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 778 transitions. Word has length 69 [2022-03-19 01:39:30,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:30,292 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 778 transitions. [2022-03-19 01:39:30,292 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (9), 9 states have call predecessors, (9), 4 states have return successors, (7), 4 states have call predecessors, (7), 1 states have call successors, (7) [2022-03-19 01:39:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 778 transitions. [2022-03-19 01:39:30,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-19 01:39:30,293 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:30,293 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:30,293 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-19 01:39:30,293 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:30,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1513722750, now seen corresponding path program 1 times [2022-03-19 01:39:30,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:30,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604570447] [2022-03-19 01:39:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:30,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:30,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:30,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 01:39:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:30,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:30,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:30,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604570447] [2022-03-19 01:39:30,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604570447] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:30,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:30,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-19 01:39:30,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454425880] [2022-03-19 01:39:30,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:30,593 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-19 01:39:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:30,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-19 01:39:30,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-19 01:39:30,593 INFO L87 Difference]: Start difference. First operand 629 states and 778 transitions. Second operand has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 01:39:32,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:32,129 INFO L93 Difference]: Finished difference Result 662 states and 817 transitions. [2022-03-19 01:39:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 01:39:32,130 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-03-19 01:39:32,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:32,131 INFO L225 Difference]: With dead ends: 662 [2022-03-19 01:39:32,131 INFO L226 Difference]: Without dead ends: 635 [2022-03-19 01:39:32,132 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-19 01:39:32,132 INFO L912 BasicCegarLoop]: 408 mSDtfsCounter, 920 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 3543 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 3543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:32,132 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 1883 Invalid, 3869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 3543 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-19 01:39:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-03-19 01:39:32,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 631. [2022-03-19 01:39:32,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 497 states have (on average 1.243460764587525) internal successors, (618), 510 states have internal predecessors, (618), 70 states have call successors, (70), 48 states have call predecessors, (70), 63 states have return successors, (89), 79 states have call predecessors, (89), 65 states have call successors, (89) [2022-03-19 01:39:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 777 transitions. [2022-03-19 01:39:32,191 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 777 transitions. Word has length 71 [2022-03-19 01:39:32,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:32,191 INFO L478 AbstractCegarLoop]: Abstraction has 631 states and 777 transitions. [2022-03-19 01:39:32,192 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.65) internal successors, (53), 10 states have internal predecessors, (53), 4 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-19 01:39:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 777 transitions. [2022-03-19 01:39:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 01:39:32,192 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:32,193 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:32,193 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-19 01:39:32,193 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1880837203, now seen corresponding path program 1 times [2022-03-19 01:39:32,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:32,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625884729] [2022-03-19 01:39:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:32,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:32,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:32,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:32,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:32,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:32,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-19 01:39:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:32,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 01:39:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:32,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:32,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625884729] [2022-03-19 01:39:32,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625884729] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:32,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:32,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-19 01:39:32,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801543483] [2022-03-19 01:39:32,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:32,451 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-19 01:39:32,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:32,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-19 01:39:32,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-19 01:39:32,452 INFO L87 Difference]: Start difference. First operand 631 states and 777 transitions. Second operand has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 01:39:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:34,098 INFO L93 Difference]: Finished difference Result 657 states and 805 transitions. [2022-03-19 01:39:34,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 01:39:34,098 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-03-19 01:39:34,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:34,099 INFO L225 Difference]: With dead ends: 657 [2022-03-19 01:39:34,099 INFO L226 Difference]: Without dead ends: 633 [2022-03-19 01:39:34,100 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-19 01:39:34,100 INFO L912 BasicCegarLoop]: 403 mSDtfsCounter, 695 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 3836 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:34,100 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 2038 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3836 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-19 01:39:34,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-03-19 01:39:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 629. [2022-03-19 01:39:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 496 states have (on average 1.2419354838709677) internal successors, (616), 509 states have internal predecessors, (616), 69 states have call successors, (69), 48 states have call predecessors, (69), 63 states have return successors, (88), 78 states have call predecessors, (88), 64 states have call successors, (88) [2022-03-19 01:39:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 773 transitions. [2022-03-19 01:39:34,153 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 773 transitions. Word has length 74 [2022-03-19 01:39:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:34,153 INFO L478 AbstractCegarLoop]: Abstraction has 629 states and 773 transitions. [2022-03-19 01:39:34,153 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.7) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 01:39:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 773 transitions. [2022-03-19 01:39:34,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-19 01:39:34,154 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:34,154 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:34,154 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-03-19 01:39:34,154 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:34,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:34,154 INFO L85 PathProgramCache]: Analyzing trace with hash 488230751, now seen corresponding path program 1 times [2022-03-19 01:39:34,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:34,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908866208] [2022-03-19 01:39:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:34,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:34,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:34,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:34,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:34,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 01:39:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:34,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:34,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:34,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908866208] [2022-03-19 01:39:34,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908866208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:34,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:34,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 01:39:34,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464753441] [2022-03-19 01:39:34,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:34,368 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 01:39:34,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 01:39:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-19 01:39:34,369 INFO L87 Difference]: Start difference. First operand 629 states and 773 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:35,370 INFO L93 Difference]: Finished difference Result 667 states and 812 transitions. [2022-03-19 01:39:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:39:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-19 01:39:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:35,371 INFO L225 Difference]: With dead ends: 667 [2022-03-19 01:39:35,371 INFO L226 Difference]: Without dead ends: 622 [2022-03-19 01:39:35,372 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-19 01:39:35,372 INFO L912 BasicCegarLoop]: 389 mSDtfsCounter, 258 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:35,372 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 988 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 01:39:35,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-03-19 01:39:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2022-03-19 01:39:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 490 states have (on average 1.2428571428571429) internal successors, (609), 503 states have internal predecessors, (609), 68 states have call successors, (68), 48 states have call predecessors, (68), 63 states have return successors, (86), 77 states have call predecessors, (86), 63 states have call successors, (86) [2022-03-19 01:39:35,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 763 transitions. [2022-03-19 01:39:35,424 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 763 transitions. Word has length 71 [2022-03-19 01:39:35,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:35,424 INFO L478 AbstractCegarLoop]: Abstraction has 622 states and 763 transitions. [2022-03-19 01:39:35,424 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 763 transitions. [2022-03-19 01:39:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-03-19 01:39:35,425 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:35,425 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:35,425 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-19 01:39:35,425 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:35,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:35,425 INFO L85 PathProgramCache]: Analyzing trace with hash -756614912, now seen corresponding path program 1 times [2022-03-19 01:39:35,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:35,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303981510] [2022-03-19 01:39:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:35,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:35,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:35,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:35,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:35,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-19 01:39:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:35,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:35,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:35,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:35,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303981510] [2022-03-19 01:39:35,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303981510] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:35,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:35,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 01:39:35,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530986166] [2022-03-19 01:39:35,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:35,652 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 01:39:35,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:35,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 01:39:35,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-19 01:39:35,652 INFO L87 Difference]: Start difference. First operand 622 states and 763 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:36,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:36,632 INFO L93 Difference]: Finished difference Result 660 states and 802 transitions. [2022-03-19 01:39:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:39:36,633 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-03-19 01:39:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:36,634 INFO L225 Difference]: With dead ends: 660 [2022-03-19 01:39:36,634 INFO L226 Difference]: Without dead ends: 616 [2022-03-19 01:39:36,634 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-19 01:39:36,634 INFO L912 BasicCegarLoop]: 381 mSDtfsCounter, 1050 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:36,635 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 891 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 01:39:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-03-19 01:39:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2022-03-19 01:39:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 485 states have (on average 1.243298969072165) internal successors, (603), 498 states have internal predecessors, (603), 67 states have call successors, (67), 48 states have call predecessors, (67), 63 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-03-19 01:39:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 755 transitions. [2022-03-19 01:39:36,685 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 755 transitions. Word has length 71 [2022-03-19 01:39:36,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:36,685 INFO L478 AbstractCegarLoop]: Abstraction has 616 states and 755 transitions. [2022-03-19 01:39:36,685 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 755 transitions. [2022-03-19 01:39:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-19 01:39:36,686 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:36,686 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:36,686 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-19 01:39:36,687 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:36,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash 590503932, now seen corresponding path program 1 times [2022-03-19 01:39:36,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:36,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072171733] [2022-03-19 01:39:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:36,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:36,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:36,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:36,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:36,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:36,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:36,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 01:39:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:36,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:36,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:36,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072171733] [2022-03-19 01:39:36,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072171733] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:36,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:36,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-19 01:39:36,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091520320] [2022-03-19 01:39:36,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:36,965 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-19 01:39:36,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:36,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-19 01:39:36,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-03-19 01:39:36,965 INFO L87 Difference]: Start difference. First operand 616 states and 755 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 01:39:38,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:38,479 INFO L93 Difference]: Finished difference Result 640 states and 781 transitions. [2022-03-19 01:39:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 01:39:38,480 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2022-03-19 01:39:38,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:38,481 INFO L225 Difference]: With dead ends: 640 [2022-03-19 01:39:38,481 INFO L226 Difference]: Without dead ends: 614 [2022-03-19 01:39:38,481 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-03-19 01:39:38,482 INFO L912 BasicCegarLoop]: 385 mSDtfsCounter, 462 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 3346 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 3346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:38,482 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1917 Invalid, 3506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 3346 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-19 01:39:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-03-19 01:39:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2022-03-19 01:39:38,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 483 states have (on average 1.2422360248447204) internal successors, (600), 496 states have internal predecessors, (600), 67 states have call successors, (67), 48 states have call predecessors, (67), 63 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-03-19 01:39:38,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 752 transitions. [2022-03-19 01:39:38,534 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 752 transitions. Word has length 77 [2022-03-19 01:39:38,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:38,534 INFO L478 AbstractCegarLoop]: Abstraction has 614 states and 752 transitions. [2022-03-19 01:39:38,535 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 01:39:38,535 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 752 transitions. [2022-03-19 01:39:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-19 01:39:38,536 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:38,536 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:38,536 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-19 01:39:38,536 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:38,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:38,536 INFO L85 PathProgramCache]: Analyzing trace with hash -186895060, now seen corresponding path program 1 times [2022-03-19 01:39:38,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:38,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152871658] [2022-03-19 01:39:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:38,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:38,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:38,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:38,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:38,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:38,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-03-19 01:39:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:38,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:38,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:38,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152871658] [2022-03-19 01:39:38,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152871658] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:38,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:38,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 01:39:38,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210091651] [2022-03-19 01:39:38,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:38,722 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 01:39:38,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:38,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 01:39:38,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-19 01:39:38,726 INFO L87 Difference]: Start difference. First operand 614 states and 752 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 01:39:39,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:39,680 INFO L93 Difference]: Finished difference Result 652 states and 791 transitions. [2022-03-19 01:39:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:39:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2022-03-19 01:39:39,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:39,681 INFO L225 Difference]: With dead ends: 652 [2022-03-19 01:39:39,681 INFO L226 Difference]: Without dead ends: 598 [2022-03-19 01:39:39,682 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-19 01:39:39,682 INFO L912 BasicCegarLoop]: 360 mSDtfsCounter, 236 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:39,682 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 955 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 01:39:39,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-03-19 01:39:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2022-03-19 01:39:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 470 states have (on average 1.2382978723404254) internal successors, (582), 483 states have internal predecessors, (582), 64 states have call successors, (64), 48 states have call predecessors, (64), 63 states have return successors, (81), 73 states have call predecessors, (81), 59 states have call successors, (81) [2022-03-19 01:39:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 727 transitions. [2022-03-19 01:39:39,729 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 727 transitions. Word has length 78 [2022-03-19 01:39:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:39,729 INFO L478 AbstractCegarLoop]: Abstraction has 598 states and 727 transitions. [2022-03-19 01:39:39,729 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 01:39:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 727 transitions. [2022-03-19 01:39:39,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 01:39:39,730 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:39,730 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:39,730 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-19 01:39:39,730 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:39,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash 355041746, now seen corresponding path program 1 times [2022-03-19 01:39:39,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:39,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137405512] [2022-03-19 01:39:39,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:39,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:39,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:39,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:39,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 01:39:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:39,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:39,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:39,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137405512] [2022-03-19 01:39:39,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137405512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:39,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:39,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 01:39:39,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009886652] [2022-03-19 01:39:39,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:39,913 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 01:39:39,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 01:39:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-03-19 01:39:39,914 INFO L87 Difference]: Start difference. First operand 598 states and 727 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:40,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:40,770 INFO L93 Difference]: Finished difference Result 636 states and 766 transitions. [2022-03-19 01:39:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:39:40,772 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-03-19 01:39:40,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:40,773 INFO L225 Difference]: With dead ends: 636 [2022-03-19 01:39:40,773 INFO L226 Difference]: Without dead ends: 585 [2022-03-19 01:39:40,773 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-03-19 01:39:40,773 INFO L912 BasicCegarLoop]: 349 mSDtfsCounter, 738 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:40,773 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 966 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 01:39:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-03-19 01:39:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-03-19 01:39:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 458 states have (on average 1.2336244541484715) internal successors, (565), 471 states have internal predecessors, (565), 63 states have call successors, (63), 48 states have call predecessors, (63), 63 states have return successors, (80), 72 states have call predecessors, (80), 58 states have call successors, (80) [2022-03-19 01:39:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 708 transitions. [2022-03-19 01:39:40,820 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 708 transitions. Word has length 73 [2022-03-19 01:39:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:40,820 INFO L478 AbstractCegarLoop]: Abstraction has 585 states and 708 transitions. [2022-03-19 01:39:40,820 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 708 transitions. [2022-03-19 01:39:40,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 01:39:40,821 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:40,821 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:40,821 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-19 01:39:40,821 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:40,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:40,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1118214243, now seen corresponding path program 1 times [2022-03-19 01:39:40,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:40,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502193573] [2022-03-19 01:39:40,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:40,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:40,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:40,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:40,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:40,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:40,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:40,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:41,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 01:39:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:41,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502193573] [2022-03-19 01:39:41,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502193573] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:41,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:41,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-19 01:39:41,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611253933] [2022-03-19 01:39:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:41,096 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-19 01:39:41,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:41,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-19 01:39:41,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:39:41,096 INFO L87 Difference]: Start difference. First operand 585 states and 708 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-19 01:39:44,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:44,035 INFO L93 Difference]: Finished difference Result 1254 states and 1513 transitions. [2022-03-19 01:39:44,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-19 01:39:44,036 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-03-19 01:39:44,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:44,038 INFO L225 Difference]: With dead ends: 1254 [2022-03-19 01:39:44,038 INFO L226 Difference]: Without dead ends: 1109 [2022-03-19 01:39:44,039 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=614, Invalid=2356, Unknown=0, NotChecked=0, Total=2970 [2022-03-19 01:39:44,039 INFO L912 BasicCegarLoop]: 354 mSDtfsCounter, 2190 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 4181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:44,039 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 1173 Invalid, 4181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-19 01:39:44,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-03-19 01:39:44,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 916. [2022-03-19 01:39:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 723 states have (on average 1.2572614107883817) internal successors, (909), 743 states have internal predecessors, (909), 95 states have call successors, (95), 76 states have call predecessors, (95), 97 states have return successors, (125), 103 states have call predecessors, (125), 90 states have call successors, (125) [2022-03-19 01:39:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1129 transitions. [2022-03-19 01:39:44,123 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1129 transitions. Word has length 73 [2022-03-19 01:39:44,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:44,124 INFO L478 AbstractCegarLoop]: Abstraction has 916 states and 1129 transitions. [2022-03-19 01:39:44,124 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-19 01:39:44,124 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1129 transitions. [2022-03-19 01:39:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 01:39:44,125 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:44,125 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:44,125 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-03-19 01:39:44,125 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:44,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:44,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1368905532, now seen corresponding path program 1 times [2022-03-19 01:39:44,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:44,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129541759] [2022-03-19 01:39:44,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:44,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:44,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:44,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:44,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:44,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:44,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 01:39:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:44,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129541759] [2022-03-19 01:39:44,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129541759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:44,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:44,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 01:39:44,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36337773] [2022-03-19 01:39:44,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:44,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 01:39:44,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 01:39:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-03-19 01:39:44,323 INFO L87 Difference]: Start difference. First operand 916 states and 1129 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-19 01:39:45,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:45,954 INFO L93 Difference]: Finished difference Result 1157 states and 1397 transitions. [2022-03-19 01:39:45,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-19 01:39:45,954 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 73 [2022-03-19 01:39:45,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:45,956 INFO L225 Difference]: With dead ends: 1157 [2022-03-19 01:39:45,956 INFO L226 Difference]: Without dead ends: 1052 [2022-03-19 01:39:45,957 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2022-03-19 01:39:45,957 INFO L912 BasicCegarLoop]: 579 mSDtfsCounter, 2009 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:45,957 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 1138 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-19 01:39:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2022-03-19 01:39:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 993. [2022-03-19 01:39:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 782 states have (on average 1.2429667519181586) internal successors, (972), 798 states have internal predecessors, (972), 107 states have call successors, (107), 80 states have call predecessors, (107), 103 states have return successors, (138), 119 states have call predecessors, (138), 102 states have call successors, (138) [2022-03-19 01:39:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1217 transitions. [2022-03-19 01:39:46,047 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1217 transitions. Word has length 73 [2022-03-19 01:39:46,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:46,048 INFO L478 AbstractCegarLoop]: Abstraction has 993 states and 1217 transitions. [2022-03-19 01:39:46,048 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 6 states have internal predecessors, (55), 5 states have call successors, (10), 10 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-03-19 01:39:46,048 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1217 transitions. [2022-03-19 01:39:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-19 01:39:46,049 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:46,049 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:46,049 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-19 01:39:46,049 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:46,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:46,049 INFO L85 PathProgramCache]: Analyzing trace with hash -529895932, now seen corresponding path program 1 times [2022-03-19 01:39:46,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:46,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574065139] [2022-03-19 01:39:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:46,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:46,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:46,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:46,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:46,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:46,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:46,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-19 01:39:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:39:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:46,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:46,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:46,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574065139] [2022-03-19 01:39:46,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574065139] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:46,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:46,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 01:39:46,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798393348] [2022-03-19 01:39:46,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:46,438 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 01:39:46,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:46,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 01:39:46,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:39:46,439 INFO L87 Difference]: Start difference. First operand 993 states and 1217 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 01:39:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:47,354 INFO L93 Difference]: Finished difference Result 1022 states and 1245 transitions. [2022-03-19 01:39:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:39:47,354 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2022-03-19 01:39:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:47,356 INFO L225 Difference]: With dead ends: 1022 [2022-03-19 01:39:47,356 INFO L226 Difference]: Without dead ends: 945 [2022-03-19 01:39:47,356 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:39:47,356 INFO L912 BasicCegarLoop]: 320 mSDtfsCounter, 352 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:47,357 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 1061 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 01:39:47,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-03-19 01:39:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2022-03-19 01:39:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 748 states have (on average 1.2459893048128343) internal successors, (932), 764 states have internal predecessors, (932), 97 states have call successors, (97), 76 states have call predecessors, (97), 99 states have return successors, (126), 109 states have call predecessors, (126), 92 states have call successors, (126) [2022-03-19 01:39:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1155 transitions. [2022-03-19 01:39:47,438 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1155 transitions. Word has length 75 [2022-03-19 01:39:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:47,438 INFO L478 AbstractCegarLoop]: Abstraction has 945 states and 1155 transitions. [2022-03-19 01:39:47,438 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (11), 10 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 01:39:47,438 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1155 transitions. [2022-03-19 01:39:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-19 01:39:47,439 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:47,440 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:47,440 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-19 01:39:47,440 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:47,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1642144115, now seen corresponding path program 1 times [2022-03-19 01:39:47,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:47,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231572299] [2022-03-19 01:39:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:47,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:47,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:47,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:47,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-19 01:39:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-19 01:39:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:47,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:47,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231572299] [2022-03-19 01:39:47,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231572299] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:47,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:47,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:39:47,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108423466] [2022-03-19 01:39:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:47,593 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:39:47,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:39:47,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:47,593 INFO L87 Difference]: Start difference. First operand 945 states and 1155 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:48,503 INFO L93 Difference]: Finished difference Result 990 states and 1203 transitions. [2022-03-19 01:39:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:39:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-03-19 01:39:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:48,506 INFO L225 Difference]: With dead ends: 990 [2022-03-19 01:39:48,506 INFO L226 Difference]: Without dead ends: 929 [2022-03-19 01:39:48,506 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:39:48,506 INFO L912 BasicCegarLoop]: 304 mSDtfsCounter, 166 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:48,506 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 976 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 01:39:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-03-19 01:39:48,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 929. [2022-03-19 01:39:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 734 states have (on average 1.2452316076294279) internal successors, (914), 750 states have internal predecessors, (914), 95 states have call successors, (95), 76 states have call predecessors, (95), 99 states have return successors, (122), 107 states have call predecessors, (122), 90 states have call successors, (122) [2022-03-19 01:39:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1131 transitions. [2022-03-19 01:39:48,589 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1131 transitions. Word has length 73 [2022-03-19 01:39:48,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:48,589 INFO L478 AbstractCegarLoop]: Abstraction has 929 states and 1131 transitions. [2022-03-19 01:39:48,589 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 9 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 01:39:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1131 transitions. [2022-03-19 01:39:48,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-19 01:39:48,591 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:48,591 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:48,591 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-03-19 01:39:48,592 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:48,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:48,592 INFO L85 PathProgramCache]: Analyzing trace with hash 780600349, now seen corresponding path program 1 times [2022-03-19 01:39:48,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:48,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572127496] [2022-03-19 01:39:48,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:48,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:48,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:48,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:48,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:48,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 01:39:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:48,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:48,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-19 01:39:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:48,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:48,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572127496] [2022-03-19 01:39:48,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572127496] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:48,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:48,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 01:39:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582810547] [2022-03-19 01:39:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:48,886 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 01:39:48,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:48,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 01:39:48,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-03-19 01:39:48,886 INFO L87 Difference]: Start difference. First operand 929 states and 1131 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 01:39:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:49,766 INFO L93 Difference]: Finished difference Result 1093 states and 1333 transitions. [2022-03-19 01:39:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 01:39:49,766 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-03-19 01:39:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:49,768 INFO L225 Difference]: With dead ends: 1093 [2022-03-19 01:39:49,768 INFO L226 Difference]: Without dead ends: 915 [2022-03-19 01:39:49,769 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-03-19 01:39:49,769 INFO L912 BasicCegarLoop]: 296 mSDtfsCounter, 345 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:49,769 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 1167 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 01:39:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-03-19 01:39:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 915. [2022-03-19 01:39:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 720 states have (on average 1.238888888888889) internal successors, (892), 736 states have internal predecessors, (892), 95 states have call successors, (95), 76 states have call predecessors, (95), 99 states have return successors, (122), 107 states have call predecessors, (122), 90 states have call successors, (122) [2022-03-19 01:39:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1109 transitions. [2022-03-19 01:39:49,851 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1109 transitions. Word has length 77 [2022-03-19 01:39:49,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:49,852 INFO L478 AbstractCegarLoop]: Abstraction has 915 states and 1109 transitions. [2022-03-19 01:39:49,852 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-19 01:39:49,852 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1109 transitions. [2022-03-19 01:39:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-19 01:39:49,853 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:49,853 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-19 01:39:49,853 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-19 01:39:49,853 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:49,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:49,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1219602648, now seen corresponding path program 1 times [2022-03-19 01:39:49,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:49,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315716604] [2022-03-19 01:39:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:49,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:49,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:49,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:49,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:49,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:50,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-03-19 01:39:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:50,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-03-19 01:39:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 01:39:50,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:50,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315716604] [2022-03-19 01:39:50,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315716604] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:50,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:50,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:39:50,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118629269] [2022-03-19 01:39:50,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:50,018 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:39:50,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:50,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:39:50,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:50,019 INFO L87 Difference]: Start difference. First operand 915 states and 1109 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:50,785 INFO L93 Difference]: Finished difference Result 960 states and 1157 transitions. [2022-03-19 01:39:50,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-19 01:39:50,786 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-03-19 01:39:50,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:50,788 INFO L225 Difference]: With dead ends: 960 [2022-03-19 01:39:50,788 INFO L226 Difference]: Without dead ends: 895 [2022-03-19 01:39:50,788 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:39:50,788 INFO L912 BasicCegarLoop]: 288 mSDtfsCounter, 547 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:50,788 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 910 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 01:39:50,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-03-19 01:39:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2022-03-19 01:39:50,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 704 states have (on average 1.2386363636363635) internal successors, (872), 720 states have internal predecessors, (872), 91 states have call successors, (91), 76 states have call predecessors, (91), 99 states have return successors, (118), 103 states have call predecessors, (118), 86 states have call successors, (118) [2022-03-19 01:39:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1081 transitions. [2022-03-19 01:39:50,863 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1081 transitions. Word has length 75 [2022-03-19 01:39:50,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:50,864 INFO L478 AbstractCegarLoop]: Abstraction has 895 states and 1081 transitions. [2022-03-19 01:39:50,864 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 9 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:50,864 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1081 transitions. [2022-03-19 01:39:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-19 01:39:50,865 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:50,865 INFO L500 BasicCegarLoop]: trace histogram [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] [2022-03-19 01:39:50,865 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-19 01:39:50,865 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:50,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:50,865 INFO L85 PathProgramCache]: Analyzing trace with hash 461830745, now seen corresponding path program 1 times [2022-03-19 01:39:50,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:50,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195083152] [2022-03-19 01:39:50,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:50,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:50,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:50,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:50,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:50,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-19 01:39:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 01:39:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-03-19 01:39:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-19 01:39:51,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:51,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195083152] [2022-03-19 01:39:51,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195083152] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 01:39:51,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163219518] [2022-03-19 01:39:51,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:51,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:39:51,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 01:39:51,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 01:39:51,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 01:39:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-19 01:39:51,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 01:39:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:51,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 01:39:51,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163219518] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:51,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 01:39:51,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 12 [2022-03-19 01:39:51,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876213132] [2022-03-19 01:39:51,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:51,276 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 01:39:51,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:51,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 01:39:51,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:51,277 INFO L87 Difference]: Start difference. First operand 895 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:51,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:51,348 INFO L93 Difference]: Finished difference Result 929 states and 1113 transitions. [2022-03-19 01:39:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 01:39:51,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-03-19 01:39:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:51,350 INFO L225 Difference]: With dead ends: 929 [2022-03-19 01:39:51,350 INFO L226 Difference]: Without dead ends: 834 [2022-03-19 01:39:51,350 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:51,351 INFO L912 BasicCegarLoop]: 295 mSDtfsCounter, 0 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:51,351 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1176 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 01:39:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-03-19 01:39:51,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 834. [2022-03-19 01:39:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 658 states have (on average 1.2462006079027355) internal successors, (820), 671 states have internal predecessors, (820), 85 states have call successors, (85), 73 states have call predecessors, (85), 90 states have return successors, (106), 94 states have call predecessors, (106), 80 states have call successors, (106) [2022-03-19 01:39:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1011 transitions. [2022-03-19 01:39:51,421 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1011 transitions. Word has length 77 [2022-03-19 01:39:51,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:51,421 INFO L478 AbstractCegarLoop]: Abstraction has 834 states and 1011 transitions. [2022-03-19 01:39:51,421 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 01:39:51,421 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1011 transitions. [2022-03-19 01:39:51,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-19 01:39:51,422 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:51,422 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:51,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 01:39:51,630 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:39:51,630 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1363389701, now seen corresponding path program 1 times [2022-03-19 01:39:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:51,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727759995] [2022-03-19 01:39:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:51,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 01:39:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-03-19 01:39:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:51,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:51,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727759995] [2022-03-19 01:39:51,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727759995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:51,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:51,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-03-19 01:39:51,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159567272] [2022-03-19 01:39:51,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:51,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-19 01:39:51,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:51,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-19 01:39:51,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-19 01:39:51,837 INFO L87 Difference]: Start difference. First operand 834 states and 1011 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2022-03-19 01:39:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:52,462 INFO L93 Difference]: Finished difference Result 966 states and 1179 transitions. [2022-03-19 01:39:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 01:39:52,462 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) Word has length 81 [2022-03-19 01:39:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:52,464 INFO L225 Difference]: With dead ends: 966 [2022-03-19 01:39:52,464 INFO L226 Difference]: Without dead ends: 802 [2022-03-19 01:39:52,464 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-03-19 01:39:52,465 INFO L912 BasicCegarLoop]: 260 mSDtfsCounter, 649 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:52,465 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 755 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 01:39:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-03-19 01:39:52,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2022-03-19 01:39:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 632 states have (on average 1.25) internal successors, (790), 643 states have internal predecessors, (790), 83 states have call successors, (83), 71 states have call predecessors, (83), 86 states have return successors, (102), 92 states have call predecessors, (102), 78 states have call successors, (102) [2022-03-19 01:39:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 975 transitions. [2022-03-19 01:39:52,533 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 975 transitions. Word has length 81 [2022-03-19 01:39:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:52,533 INFO L478 AbstractCegarLoop]: Abstraction has 802 states and 975 transitions. [2022-03-19 01:39:52,533 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (14), 11 states have call predecessors, (14), 5 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2022-03-19 01:39:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 975 transitions. [2022-03-19 01:39:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-19 01:39:52,534 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:52,534 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:52,534 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-19 01:39:52,534 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:52,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:52,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1220432173, now seen corresponding path program 1 times [2022-03-19 01:39:52,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:52,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497091718] [2022-03-19 01:39:52,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:52,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:52,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:52,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:52,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-03-19 01:39:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:52,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:52,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:52,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497091718] [2022-03-19 01:39:52,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497091718] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:52,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:52,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 01:39:52,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055126235] [2022-03-19 01:39:52,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:52,767 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 01:39:52,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:52,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 01:39:52,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-03-19 01:39:52,767 INFO L87 Difference]: Start difference. First operand 802 states and 975 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-03-19 01:39:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:54,218 INFO L93 Difference]: Finished difference Result 847 states and 1020 transitions. [2022-03-19 01:39:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-19 01:39:54,219 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 78 [2022-03-19 01:39:54,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:54,220 INFO L225 Difference]: With dead ends: 847 [2022-03-19 01:39:54,220 INFO L226 Difference]: Without dead ends: 714 [2022-03-19 01:39:54,221 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2022-03-19 01:39:54,221 INFO L912 BasicCegarLoop]: 425 mSDtfsCounter, 1101 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2361 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 2361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:54,221 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1433 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 2361 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-19 01:39:54,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-03-19 01:39:54,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 366. [2022-03-19 01:39:54,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 40 states have call successors, (40), 35 states have call predecessors, (40), 37 states have return successors, (44), 40 states have call predecessors, (44), 36 states have call successors, (44) [2022-03-19 01:39:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 444 transitions. [2022-03-19 01:39:54,262 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 444 transitions. Word has length 78 [2022-03-19 01:39:54,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:54,263 INFO L478 AbstractCegarLoop]: Abstraction has 366 states and 444 transitions. [2022-03-19 01:39:54,263 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 9 states have internal predecessors, (58), 5 states have call successors, (11), 10 states have call predecessors, (11), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-03-19 01:39:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 444 transitions. [2022-03-19 01:39:54,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-19 01:39:54,263 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:54,263 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:54,263 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-19 01:39:54,263 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1514865381, now seen corresponding path program 1 times [2022-03-19 01:39:54,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:54,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665289731] [2022-03-19 01:39:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:54,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:54,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:54,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:54,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-03-19 01:39:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:54,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:54,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-19 01:39:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-19 01:39:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 01:39:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:54,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:54,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665289731] [2022-03-19 01:39:54,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665289731] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:54,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:54,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-19 01:39:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391646207] [2022-03-19 01:39:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:54,505 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-19 01:39:54,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:54,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-19 01:39:54,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:39:54,505 INFO L87 Difference]: Start difference. First operand 366 states and 444 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 01:39:55,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:55,306 INFO L93 Difference]: Finished difference Result 368 states and 445 transitions. [2022-03-19 01:39:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 01:39:55,306 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) Word has length 79 [2022-03-19 01:39:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:55,307 INFO L225 Difference]: With dead ends: 368 [2022-03-19 01:39:55,307 INFO L226 Difference]: Without dead ends: 289 [2022-03-19 01:39:55,307 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-03-19 01:39:55,307 INFO L912 BasicCegarLoop]: 219 mSDtfsCounter, 192 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:55,307 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1594 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 01:39:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-03-19 01:39:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-03-19 01:39:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 225 states have (on average 1.271111111111111) internal successors, (286), 227 states have internal predecessors, (286), 32 states have call successors, (32), 29 states have call predecessors, (32), 31 states have return successors, (37), 33 states have call predecessors, (37), 29 states have call successors, (37) [2022-03-19 01:39:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 355 transitions. [2022-03-19 01:39:55,338 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 355 transitions. Word has length 79 [2022-03-19 01:39:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:55,338 INFO L478 AbstractCegarLoop]: Abstraction has 289 states and 355 transitions. [2022-03-19 01:39:55,338 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (10), 9 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2022-03-19 01:39:55,338 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 355 transitions. [2022-03-19 01:39:55,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-19 01:39:55,339 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:55,339 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:55,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-19 01:39:55,339 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1000162365, now seen corresponding path program 1 times [2022-03-19 01:39:55,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:55,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707835523] [2022-03-19 01:39:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:55,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 01:39:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 01:39:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:55,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:55,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707835523] [2022-03-19 01:39:55,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707835523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:55,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:55,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:39:55,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267074466] [2022-03-19 01:39:55,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:55,498 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:39:55,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:55,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:39:55,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:55,498 INFO L87 Difference]: Start difference. First operand 289 states and 355 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-19 01:39:55,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:55,886 INFO L93 Difference]: Finished difference Result 372 states and 441 transitions. [2022-03-19 01:39:55,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 01:39:55,886 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2022-03-19 01:39:55,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:55,887 INFO L225 Difference]: With dead ends: 372 [2022-03-19 01:39:55,887 INFO L226 Difference]: Without dead ends: 286 [2022-03-19 01:39:55,888 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:39:55,888 INFO L912 BasicCegarLoop]: 205 mSDtfsCounter, 171 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:55,888 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 680 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 01:39:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-03-19 01:39:55,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 246. [2022-03-19 01:39:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.1904761904761905) internal successors, (225), 192 states have internal predecessors, (225), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2022-03-19 01:39:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 284 transitions. [2022-03-19 01:39:55,915 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 284 transitions. Word has length 83 [2022-03-19 01:39:55,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:55,915 INFO L478 AbstractCegarLoop]: Abstraction has 246 states and 284 transitions. [2022-03-19 01:39:55,915 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-03-19 01:39:55,915 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 284 transitions. [2022-03-19 01:39:55,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-19 01:39:55,916 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:55,916 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:55,916 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-19 01:39:55,916 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:55,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:55,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2124626258, now seen corresponding path program 1 times [2022-03-19 01:39:55,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:55,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834734528] [2022-03-19 01:39:55,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:55,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:55,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 01:39:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 01:39:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-03-19 01:39:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:56,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:56,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834734528] [2022-03-19 01:39:56,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834734528] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:56,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:56,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 01:39:56,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185875967] [2022-03-19 01:39:56,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:56,152 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 01:39:56,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:56,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 01:39:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-03-19 01:39:56,152 INFO L87 Difference]: Start difference. First operand 246 states and 284 transitions. Second operand has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-19 01:39:56,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:56,684 INFO L93 Difference]: Finished difference Result 299 states and 341 transitions. [2022-03-19 01:39:56,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 01:39:56,685 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2022-03-19 01:39:56,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:56,685 INFO L225 Difference]: With dead ends: 299 [2022-03-19 01:39:56,685 INFO L226 Difference]: Without dead ends: 265 [2022-03-19 01:39:56,686 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2022-03-19 01:39:56,687 INFO L912 BasicCegarLoop]: 156 mSDtfsCounter, 289 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:56,687 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 1081 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 01:39:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-03-19 01:39:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 244. [2022-03-19 01:39:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 187 states have (on average 1.1657754010695187) internal successors, (218), 190 states have internal predecessors, (218), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 28 states have call predecessors, (30), 27 states have call successors, (30) [2022-03-19 01:39:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2022-03-19 01:39:56,713 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 99 [2022-03-19 01:39:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:56,713 INFO L478 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2022-03-19 01:39:56,713 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.055555555555555) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-19 01:39:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2022-03-19 01:39:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-03-19 01:39:56,714 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:56,714 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:56,714 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-19 01:39:56,714 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:56,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash 515298531, now seen corresponding path program 1 times [2022-03-19 01:39:56,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:56,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353472102] [2022-03-19 01:39:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:56,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 01:39:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:57,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 01:39:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 01:39:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:57,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:57,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:57,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353472102] [2022-03-19 01:39:57,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353472102] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:57,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:57,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-19 01:39:57,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136675255] [2022-03-19 01:39:57,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:57,080 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-19 01:39:57,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-19 01:39:57,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:39:57,081 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-19 01:39:58,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:58,318 INFO L93 Difference]: Finished difference Result 528 states and 598 transitions. [2022-03-19 01:39:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-19 01:39:58,319 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 101 [2022-03-19 01:39:58,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:58,319 INFO L225 Difference]: With dead ends: 528 [2022-03-19 01:39:58,320 INFO L226 Difference]: Without dead ends: 422 [2022-03-19 01:39:58,321 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=245, Invalid=1315, Unknown=0, NotChecked=0, Total=1560 [2022-03-19 01:39:58,322 INFO L912 BasicCegarLoop]: 252 mSDtfsCounter, 1004 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:58,322 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 951 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-19 01:39:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-19 01:39:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 359. [2022-03-19 01:39:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.1552346570397112) internal successors, (320), 282 states have internal predecessors, (320), 41 states have call successors, (41), 38 states have call predecessors, (41), 40 states have return successors, (43), 39 states have call predecessors, (43), 39 states have call successors, (43) [2022-03-19 01:39:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 404 transitions. [2022-03-19 01:39:58,361 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 404 transitions. Word has length 101 [2022-03-19 01:39:58,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:58,361 INFO L478 AbstractCegarLoop]: Abstraction has 359 states and 404 transitions. [2022-03-19 01:39:58,361 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 9 states have internal predecessors, (75), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-19 01:39:58,361 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 404 transitions. [2022-03-19 01:39:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-03-19 01:39:58,362 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:58,362 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:58,362 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-19 01:39:58,362 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:58,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:58,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1453830146, now seen corresponding path program 1 times [2022-03-19 01:39:58,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:58,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064155520] [2022-03-19 01:39:58,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:58,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 01:39:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-03-19 01:39:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:58,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 01:39:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-03-19 01:39:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:39:58,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:58,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064155520] [2022-03-19 01:39:58,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064155520] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:58,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:58,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 01:39:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450482619] [2022-03-19 01:39:58,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:58,613 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 01:39:58,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:58,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 01:39:58,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-03-19 01:39:58,613 INFO L87 Difference]: Start difference. First operand 359 states and 404 transitions. Second operand has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-03-19 01:39:59,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:59,135 INFO L93 Difference]: Finished difference Result 377 states and 423 transitions. [2022-03-19 01:39:59,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 01:39:59,136 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2022-03-19 01:39:59,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:59,136 INFO L225 Difference]: With dead ends: 377 [2022-03-19 01:39:59,136 INFO L226 Difference]: Without dead ends: 274 [2022-03-19 01:39:59,137 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-03-19 01:39:59,137 INFO L912 BasicCegarLoop]: 160 mSDtfsCounter, 59 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:59,137 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1091 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 01:39:59,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-19 01:39:59,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 146. [2022-03-19 01:39:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 112 states have (on average 1.125) internal successors, (126), 114 states have internal predecessors, (126), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-03-19 01:39:59,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 159 transitions. [2022-03-19 01:39:59,156 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 159 transitions. Word has length 101 [2022-03-19 01:39:59,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:59,156 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 159 transitions. [2022-03-19 01:39:59,156 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.411764705882353) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 11 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-03-19 01:39:59,156 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 159 transitions. [2022-03-19 01:39:59,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-19 01:39:59,157 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:59,157 INFO L500 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:59,157 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-19 01:39:59,157 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:59,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:59,157 INFO L85 PathProgramCache]: Analyzing trace with hash 954691984, now seen corresponding path program 1 times [2022-03-19 01:39:59,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:59,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767232597] [2022-03-19 01:39:59,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:59,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 01:39:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 01:39:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 01:39:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 01:39:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-19 01:39:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-19 01:39:59,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:59,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767232597] [2022-03-19 01:39:59,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767232597] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:59,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:59,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:39:59,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132323766] [2022-03-19 01:39:59,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:59,315 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:39:59,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:39:59,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:39:59,316 INFO L87 Difference]: Start difference. First operand 146 states and 159 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-19 01:39:59,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:39:59,576 INFO L93 Difference]: Finished difference Result 192 states and 212 transitions. [2022-03-19 01:39:59,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 01:39:59,576 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-03-19 01:39:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:39:59,577 INFO L225 Difference]: With dead ends: 192 [2022-03-19 01:39:59,577 INFO L226 Difference]: Without dead ends: 158 [2022-03-19 01:39:59,577 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2022-03-19 01:39:59,577 INFO L912 BasicCegarLoop]: 125 mSDtfsCounter, 115 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 01:39:59,577 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 376 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 01:39:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-03-19 01:39:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-03-19 01:39:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1196581196581197) internal successors, (131), 119 states have internal predecessors, (131), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-03-19 01:39:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2022-03-19 01:39:59,598 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 116 [2022-03-19 01:39:59,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:39:59,598 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2022-03-19 01:39:59,598 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-19 01:39:59,599 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2022-03-19 01:39:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-19 01:39:59,599 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:39:59,599 INFO L500 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:39:59,599 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-19 01:39:59,599 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:39:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:39:59,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1647793681, now seen corresponding path program 1 times [2022-03-19 01:39:59,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:39:59,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488889734] [2022-03-19 01:39:59,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:39:59,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:39:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:39:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:39:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:39:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 01:39:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 01:39:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:39:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:39:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:39:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 01:39:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 01:39:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-19 01:39:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:39:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-19 01:39:59,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:39:59,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488889734] [2022-03-19 01:39:59,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488889734] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:39:59,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:39:59,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 01:39:59,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9321776] [2022-03-19 01:39:59,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:39:59,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 01:39:59,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:39:59,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 01:39:59,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-03-19 01:39:59,820 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-19 01:40:00,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:40:00,618 INFO L93 Difference]: Finished difference Result 292 states and 319 transitions. [2022-03-19 01:40:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-19 01:40:00,619 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-03-19 01:40:00,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:40:00,619 INFO L225 Difference]: With dead ends: 292 [2022-03-19 01:40:00,619 INFO L226 Difference]: Without dead ends: 152 [2022-03-19 01:40:00,620 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=1181, Unknown=0, NotChecked=0, Total=1406 [2022-03-19 01:40:00,620 INFO L912 BasicCegarLoop]: 107 mSDtfsCounter, 256 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 01:40:00,620 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 409 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-19 01:40:00,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-03-19 01:40:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-03-19 01:40:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.1111111111111112) internal successors, (130), 119 states have internal predecessors, (130), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-03-19 01:40:00,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2022-03-19 01:40:00,640 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 116 [2022-03-19 01:40:00,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:40:00,640 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2022-03-19 01:40:00,641 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-19 01:40:00,641 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2022-03-19 01:40:00,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-19 01:40:00,641 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:40:00,641 INFO L500 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:40:00,641 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-03-19 01:40:00,641 INFO L403 AbstractCegarLoop]: === Iteration 81 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:40:00,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:40:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2114082993, now seen corresponding path program 1 times [2022-03-19 01:40:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:40:00,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992732105] [2022-03-19 01:40:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:40:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:40:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:40:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:40:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:40:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 01:40:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:40:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 01:40:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:40:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:40:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:40:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:40:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 01:40:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 01:40:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-19 01:40:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-19 01:40:00,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:40:00,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992732105] [2022-03-19 01:40:00,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992732105] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:40:00,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:40:00,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 01:40:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732316006] [2022-03-19 01:40:00,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:40:00,806 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 01:40:00,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:40:00,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 01:40:00,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-03-19 01:40:00,812 INFO L87 Difference]: Start difference. First operand 152 states and 165 transitions. Second operand has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-19 01:40:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:40:01,105 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2022-03-19 01:40:01,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 01:40:01,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-03-19 01:40:01,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:40:01,106 INFO L225 Difference]: With dead ends: 191 [2022-03-19 01:40:01,106 INFO L226 Difference]: Without dead ends: 158 [2022-03-19 01:40:01,106 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2022-03-19 01:40:01,106 INFO L912 BasicCegarLoop]: 123 mSDtfsCounter, 51 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 01:40:01,106 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 389 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 01:40:01,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-03-19 01:40:01,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-03-19 01:40:01,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.0940170940170941) internal successors, (128), 119 states have internal predecessors, (128), 18 states have call successors, (18), 17 states have call predecessors, (18), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-03-19 01:40:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 163 transitions. [2022-03-19 01:40:01,127 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 163 transitions. Word has length 116 [2022-03-19 01:40:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:40:01,127 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 163 transitions. [2022-03-19 01:40:01,127 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.75) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (15), 11 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-19 01:40:01,127 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 163 transitions. [2022-03-19 01:40:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-19 01:40:01,128 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:40:01,128 INFO L500 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:40:01,128 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-03-19 01:40:01,128 INFO L403 AbstractCegarLoop]: === Iteration 82 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:40:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:40:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1707014418, now seen corresponding path program 1 times [2022-03-19 01:40:01,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:40:01,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161098999] [2022-03-19 01:40:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:40:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:40:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:40:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:40:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 01:40:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-19 01:40:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:40:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 01:40:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:40:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-03-19 01:40:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 01:40:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-03-19 01:40:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-03-19 01:40:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-03-19 01:40:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-03-19 01:40:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:40:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-19 01:40:01,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:40:01,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161098999] [2022-03-19 01:40:01,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161098999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:40:01,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:40:01,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-19 01:40:01,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054401793] [2022-03-19 01:40:01,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:40:01,425 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-19 01:40:01,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:40:01,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-19 01:40:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:40:01,425 INFO L87 Difference]: Start difference. First operand 152 states and 163 transitions. Second operand has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-19 01:40:02,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:40:02,002 INFO L93 Difference]: Finished difference Result 152 states and 163 transitions. [2022-03-19 01:40:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 01:40:02,002 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-03-19 01:40:02,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:40:02,003 INFO L225 Difference]: With dead ends: 152 [2022-03-19 01:40:02,003 INFO L226 Difference]: Without dead ends: 0 [2022-03-19 01:40:02,004 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-03-19 01:40:02,005 INFO L912 BasicCegarLoop]: 95 mSDtfsCounter, 304 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-19 01:40:02,005 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 321 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-19 01:40:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-19 01:40:02,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-19 01:40:02,005 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) [2022-03-19 01:40:02,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-19 01:40:02,005 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-03-19 01:40:02,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:40:02,005 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-19 01:40:02,005 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.05) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-19 01:40:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-19 01:40:02,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-19 01:40:02,007 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 01:40:02,008 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-19 01:40:02,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.