/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 08:33:39,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 08:33:39,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 08:33:39,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 08:33:39,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 08:33:39,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 08:33:39,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 08:33:39,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 08:33:39,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 08:33:39,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 08:33:39,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 08:33:39,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 08:33:39,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 08:33:39,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 08:33:39,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 08:33:39,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 08:33:39,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 08:33:39,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 08:33:39,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 08:33:39,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 08:33:39,226 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 08:33:39,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 08:33:39,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 08:33:39,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 08:33:39,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 08:33:39,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-06 08:33:39,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-06 08:33:39,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-06 08:33:39,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-06 08:33:39,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-06 08:33:39,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-06 08:33:39,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-06 08:33:39,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-06 08:33:39,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-06 08:33:39,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-06 08:33:39,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-06 08:33:39,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-06 08:33:39,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-06 08:33:39,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-06 08:33:39,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 08:33:39,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 08:33:39,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 08:33:39,244 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-06 08:33:39,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 08:33:39,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 08:33:39,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 08:33:39,256 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 08:33:39,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 08:33:39,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 08:33:39,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 08:33:39,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 08:33:39,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 08:33:39,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 08:33:39,257 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 08:33:39,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 08:33:39,257 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 08:33:39,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 08:33:39,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 08:33:39,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 08:33:39,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 08:33:39,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 08:33:39,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 08:33:39,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 08:33:39,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 08:33:39,259 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 08:33:39,259 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 08:33:39,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 08:33:39,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 08:33:39,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 08:33:39,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 08:33:39,498 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 08:33:39,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-04-06 08:33:39,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd02e5f54/eb57da672add41cfabad49a7a7a0a288/FLAG20c292a0c [2022-04-06 08:33:39,966 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 08:33:39,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/cdaudio_simpl1.cil-2.c [2022-04-06 08:33:39,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd02e5f54/eb57da672add41cfabad49a7a7a0a288/FLAG20c292a0c [2022-04-06 08:33:40,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd02e5f54/eb57da672add41cfabad49a7a7a0a288 [2022-04-06 08:33:40,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 08:33:40,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 08:33:40,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 08:33:40,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 08:33:40,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 08:33:40,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 08:33:40" (1/1) ... [2022-04-06 08:33:40,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2719d9db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40, skipping insertion in model container [2022-04-06 08:33:40,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 08:33:40" (1/1) ... [2022-04-06 08:33:40,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 08:33:40,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 08:33:40,497 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] [2022-04-06 08:33:40,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 08:33:40,643 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 08:33:40,651 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] [2022-04-06 08:33:40,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 08:33:40,727 INFO L208 MainTranslator]: Completed translation [2022-04-06 08:33:40,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40 WrapperNode [2022-04-06 08:33:40,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 08:33:40,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 08:33:40,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 08:33:40,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 08:33:40,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40" (1/1) ... [2022-04-06 08:33:40,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40" (1/1) ... [2022-04-06 08:33:40,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40" (1/1) ... [2022-04-06 08:33:40,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40" (1/1) ... [2022-04-06 08:33:40,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40" (1/1) ... [2022-04-06 08:33:40,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40" (1/1) ... [2022-04-06 08:33:40,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40" (1/1) ... [2022-04-06 08:33:40,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 08:33:40,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 08:33:40,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 08:33:40,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 08:33:40,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40" (1/1) ... [2022-04-06 08:33:40,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 08:33:40,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:33:40,845 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) [2022-04-06 08:33:40,856 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 [2022-04-06 08:33:40,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 08:33:40,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 08:33:40,869 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioStartDevice [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPnp [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioDeviceControl [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio535DeviceControl [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudio435DeviceControl [2022-04-06 08:33:40,870 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioAtapiDeviceControl [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure HpCdrProcessLastSession [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioHPCdrDeviceControl [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioUnload [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioPower [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-04-06 08:33:40,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioStartDevice [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPnp [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioDeviceControl [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2022-04-06 08:33:40,872 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio535DeviceControl [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudio435DeviceControl [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioAtapiDeviceControl [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioHPCdrDeviceControl [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioPower [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-04-06 08:33:40,873 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure HpCdrProcessLastSession [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioUnload [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 08:33:40,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 08:33:41,071 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 08:33:41,073 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 08:33:41,189 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:33:41,280 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-04-06 08:33:41,280 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-04-06 08:33:41,286 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:33:41,314 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-04-06 08:33:41,314 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-04-06 08:33:41,334 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:33:41,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-04-06 08:33:41,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-04-06 08:33:41,410 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:33:41,438 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-04-06 08:33:41,438 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: #res := 0; [2022-04-06 08:33:41,438 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-04-06 08:33:41,441 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:33:41,546 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-04-06 08:33:41,546 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-04-06 08:33:41,547 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:33:41,564 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-04-06 08:33:41,564 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-04-06 08:33:41,603 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:33:41,612 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2022-04-06 08:33:41,613 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2022-04-06 08:33:41,615 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:33:41,724 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-04-06 08:33:41,724 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-04-06 08:33:41,732 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-04-06 08:33:41,734 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-04-06 08:33:41,734 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-04-06 08:33:41,753 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 08:33:41,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 08:33:41,767 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 08:33:41,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:33:41 BoogieIcfgContainer [2022-04-06 08:33:41,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 08:33:41,771 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 08:33:41,771 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 08:33:41,772 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 08:33:41,774 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:33:41" (1/1) ... [2022-04-06 08:33:41,775 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-06 08:33:41,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 08:33:41 BasicIcfg [2022-04-06 08:33:41,822 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 08:33:41,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 08:33:41,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 08:33:41,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 08:33:41,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 08:33:40" (1/4) ... [2022-04-06 08:33:41,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f2d7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 08:33:41, skipping insertion in model container [2022-04-06 08:33:41,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 08:33:40" (2/4) ... [2022-04-06 08:33:41,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f2d7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 08:33:41, skipping insertion in model container [2022-04-06 08:33:41,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 08:33:41" (3/4) ... [2022-04-06 08:33:41,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f2d7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:33:41, skipping insertion in model container [2022-04-06 08:33:41,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 08:33:41" (4/4) ... [2022-04-06 08:33:41,830 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-2.cJordan [2022-04-06 08:33:41,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-06 08:33:41,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 08:33:41,872 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 08:33:41,877 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 08:33:41,877 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 08:33:41,896 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) [2022-04-06 08:33:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-06 08:33:41,902 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:41,902 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:41,902 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:41,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1376594176, now seen corresponding path program 1 times [2022-04-06 08:33:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:41,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404257663] [2022-04-06 08:33:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:41,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:42,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:42,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:42,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:42,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404257663] [2022-04-06 08:33:42,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404257663] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:42,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:42,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 08:33:42,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82553667] [2022-04-06 08:33:42,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:42,255 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 08:33:42,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:42,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 08:33:42,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-06 08:33:42,276 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) [2022-04-06 08:33:43,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:33:43,903 INFO L93 Difference]: Finished difference Result 679 states and 1040 transitions. [2022-04-06 08:33:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 08:33:43,905 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 [2022-04-06 08:33:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:33:43,921 INFO L225 Difference]: With dead ends: 679 [2022-04-06 08:33:43,921 INFO L226 Difference]: Without dead ends: 663 [2022-04-06 08:33:43,922 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:33:43,924 INFO L913 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, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:33:43,925 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 1003 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 08:33:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-04-06 08:33:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 507. [2022-04-06 08:33:43,981 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) [2022-04-06 08:33:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 737 transitions. [2022-04-06 08:33:43,985 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 737 transitions. Word has length 20 [2022-04-06 08:33:43,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:33:43,985 INFO L478 AbstractCegarLoop]: Abstraction has 507 states and 737 transitions. [2022-04-06 08:33:43,985 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) [2022-04-06 08:33:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 737 transitions. [2022-04-06 08:33:43,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-06 08:33:43,986 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:43,986 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:43,986 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 08:33:43,986 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:43,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash 752029052, now seen corresponding path program 1 times [2022-04-06 08:33:43,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:43,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238833736] [2022-04-06 08:33:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:43,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:44,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:44,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:33:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:44,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:44,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:44,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238833736] [2022-04-06 08:33:44,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238833736] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:44,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:44,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 08:33:44,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896001828] [2022-04-06 08:33:44,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:44,175 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 08:33:44,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:44,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 08:33:44,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:33:44,175 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) [2022-04-06 08:33:45,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:33:45,739 INFO L93 Difference]: Finished difference Result 843 states and 1255 transitions. [2022-04-06 08:33:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 08:33:45,740 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 [2022-04-06 08:33:45,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:33:45,745 INFO L225 Difference]: With dead ends: 843 [2022-04-06 08:33:45,745 INFO L226 Difference]: Without dead ends: 842 [2022-04-06 08:33:45,745 INFO L912 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 [2022-04-06 08:33:45,746 INFO L913 BasicCegarLoop]: 835 mSDtfsCounter, 1102 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:33:45,746 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 1003 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 08:33:45,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-04-06 08:33:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 662. [2022-04-06 08:33:45,769 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) [2022-04-06 08:33:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 961 transitions. [2022-04-06 08:33:45,772 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 961 transitions. Word has length 25 [2022-04-06 08:33:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:33:45,772 INFO L478 AbstractCegarLoop]: Abstraction has 662 states and 961 transitions. [2022-04-06 08:33:45,772 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) [2022-04-06 08:33:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 961 transitions. [2022-04-06 08:33:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-06 08:33:45,773 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:45,773 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:45,773 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 08:33:45,773 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:45,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2092358377, now seen corresponding path program 1 times [2022-04-06 08:33:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:45,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473360513] [2022-04-06 08:33:45,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:45,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:45,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:45,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:33:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:45,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:45,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473360513] [2022-04-06 08:33:45,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473360513] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:45,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:45,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 08:33:45,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413463353] [2022-04-06 08:33:45,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:45,933 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 08:33:45,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:45,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 08:33:45,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:33:45,934 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) [2022-04-06 08:33:47,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:33:47,267 INFO L93 Difference]: Finished difference Result 966 states and 1409 transitions. [2022-04-06 08:33:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 08:33:47,267 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 [2022-04-06 08:33:47,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:33:47,273 INFO L225 Difference]: With dead ends: 966 [2022-04-06 08:33:47,273 INFO L226 Difference]: Without dead ends: 966 [2022-04-06 08:33:47,274 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 08:33:47,279 INFO L913 BasicCegarLoop]: 722 mSDtfsCounter, 1511 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:33:47,281 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 877 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 08:33:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-04-06 08:33:47,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 787. [2022-04-06 08:33:47,325 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) [2022-04-06 08:33:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1132 transitions. [2022-04-06 08:33:47,329 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1132 transitions. Word has length 30 [2022-04-06 08:33:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:33:47,329 INFO L478 AbstractCegarLoop]: Abstraction has 787 states and 1132 transitions. [2022-04-06 08:33:47,329 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) [2022-04-06 08:33:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1132 transitions. [2022-04-06 08:33:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-04-06 08:33:47,334 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:47,334 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:47,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 08:33:47,335 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:47,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:47,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1387045423, now seen corresponding path program 1 times [2022-04-06 08:33:47,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:47,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149862145] [2022-04-06 08:33:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:47,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:33:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:47,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:47,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:47,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149862145] [2022-04-06 08:33:47,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149862145] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:47,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:47,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 08:33:47,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407953577] [2022-04-06 08:33:47,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:47,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 08:33:47,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:47,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 08:33:47,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:33:47,457 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) [2022-04-06 08:33:49,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:33:49,160 INFO L93 Difference]: Finished difference Result 1340 states and 2025 transitions. [2022-04-06 08:33:49,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 08:33:49,161 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 [2022-04-06 08:33:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:33:49,166 INFO L225 Difference]: With dead ends: 1340 [2022-04-06 08:33:49,166 INFO L226 Difference]: Without dead ends: 1340 [2022-04-06 08:33:49,166 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 08:33:49,175 INFO L913 BasicCegarLoop]: 1003 mSDtfsCounter, 1470 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 08:33:49,176 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 1254 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 08:33:49,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-04-06 08:33:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 905. [2022-04-06 08:33:49,198 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) [2022-04-06 08:33:49,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1345 transitions. [2022-04-06 08:33:49,200 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1345 transitions. Word has length 31 [2022-04-06 08:33:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:33:49,201 INFO L478 AbstractCegarLoop]: Abstraction has 905 states and 1345 transitions. [2022-04-06 08:33:49,201 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) [2022-04-06 08:33:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1345 transitions. [2022-04-06 08:33:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 08:33:49,203 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:49,203 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:49,203 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 08:33:49,203 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:49,204 INFO L85 PathProgramCache]: Analyzing trace with hash -81256447, now seen corresponding path program 1 times [2022-04-06 08:33:49,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:49,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862922533] [2022-04-06 08:33:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:49,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:49,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:49,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:33:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:49,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:49,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862922533] [2022-04-06 08:33:49,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862922533] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:49,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:49,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 08:33:49,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966351882] [2022-04-06 08:33:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:49,384 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 08:33:49,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:49,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 08:33:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-04-06 08:33:49,385 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) [2022-04-06 08:33:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:33:50,998 INFO L93 Difference]: Finished difference Result 1042 states and 1577 transitions. [2022-04-06 08:33:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:33:50,998 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 [2022-04-06 08:33:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:33:51,002 INFO L225 Difference]: With dead ends: 1042 [2022-04-06 08:33:51,002 INFO L226 Difference]: Without dead ends: 1042 [2022-04-06 08:33:51,002 INFO L912 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 [2022-04-06 08:33:51,003 INFO L913 BasicCegarLoop]: 737 mSDtfsCounter, 3719 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 1323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3725 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1323 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 08:33:51,003 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3725 Valid, 880 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1323 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 08:33:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2022-04-06 08:33:51,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 833. [2022-04-06 08:33:51,018 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) [2022-04-06 08:33:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1200 transitions. [2022-04-06 08:33:51,020 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1200 transitions. Word has length 32 [2022-04-06 08:33:51,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:33:51,020 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1200 transitions. [2022-04-06 08:33:51,021 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) [2022-04-06 08:33:51,021 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1200 transitions. [2022-04-06 08:33:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-04-06 08:33:51,022 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:51,022 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:51,022 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 08:33:51,022 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:51,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:51,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2003772890, now seen corresponding path program 1 times [2022-04-06 08:33:51,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:51,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495963123] [2022-04-06 08:33:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:51,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:51,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:51,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:33:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:51,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:51,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495963123] [2022-04-06 08:33:51,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495963123] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:51,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:51,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 08:33:51,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564664813] [2022-04-06 08:33:51,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:51,131 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 08:33:51,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:51,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 08:33:51,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:33:51,131 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) [2022-04-06 08:33:52,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:33:52,722 INFO L93 Difference]: Finished difference Result 959 states and 1417 transitions. [2022-04-06 08:33:52,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 08:33:52,722 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 [2022-04-06 08:33:52,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:33:52,726 INFO L225 Difference]: With dead ends: 959 [2022-04-06 08:33:52,726 INFO L226 Difference]: Without dead ends: 959 [2022-04-06 08:33:52,726 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-04-06 08:33:52,726 INFO L913 BasicCegarLoop]: 710 mSDtfsCounter, 407 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:33:52,727 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 975 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 08:33:52,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-04-06 08:33:52,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 832. [2022-04-06 08:33:52,740 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) [2022-04-06 08:33:52,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1197 transitions. [2022-04-06 08:33:52,742 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1197 transitions. Word has length 36 [2022-04-06 08:33:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:33:52,742 INFO L478 AbstractCegarLoop]: Abstraction has 832 states and 1197 transitions. [2022-04-06 08:33:52,742 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) [2022-04-06 08:33:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1197 transitions. [2022-04-06 08:33:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 08:33:52,743 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:52,743 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:52,744 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 08:33:52,744 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1794233418, now seen corresponding path program 1 times [2022-04-06 08:33:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:52,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288142239] [2022-04-06 08:33:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:52,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:52,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:52,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:52,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:33:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:52,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:52,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:52,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288142239] [2022-04-06 08:33:52,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288142239] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:52,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:52,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 08:33:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110101780] [2022-04-06 08:33:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:52,864 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 08:33:52,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 08:33:52,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-06 08:33:52,865 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) [2022-04-06 08:33:55,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:33:55,011 INFO L93 Difference]: Finished difference Result 993 states and 1427 transitions. [2022-04-06 08:33:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:33:55,011 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 [2022-04-06 08:33:55,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:33:55,015 INFO L225 Difference]: With dead ends: 993 [2022-04-06 08:33:55,015 INFO L226 Difference]: Without dead ends: 993 [2022-04-06 08:33:55,016 INFO L912 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 [2022-04-06 08:33:55,016 INFO L913 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 [2022-04-06 08:33:55,016 INFO L914 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] [2022-04-06 08:33:55,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-04-06 08:33:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 734. [2022-04-06 08:33:55,031 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) [2022-04-06 08:33:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1026 transitions. [2022-04-06 08:33:55,034 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1026 transitions. Word has length 39 [2022-04-06 08:33:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:33:55,034 INFO L478 AbstractCegarLoop]: Abstraction has 734 states and 1026 transitions. [2022-04-06 08:33:55,034 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) [2022-04-06 08:33:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1026 transitions. [2022-04-06 08:33:55,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-06 08:33:55,036 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:55,036 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:55,036 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-06 08:33:55,036 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1491782484, now seen corresponding path program 1 times [2022-04-06 08:33:55,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:55,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542293444] [2022-04-06 08:33:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:55,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:55,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:55,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:33:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:55,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:55,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:55,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542293444] [2022-04-06 08:33:55,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542293444] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:55,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:55,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 08:33:55,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143183432] [2022-04-06 08:33:55,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:55,151 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 08:33:55,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:55,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 08:33:55,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-06 08:33:55,152 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) [2022-04-06 08:33:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:33:56,091 INFO L93 Difference]: Finished difference Result 957 states and 1377 transitions. [2022-04-06 08:33:56,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 08:33:56,099 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 [2022-04-06 08:33:56,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:33:56,102 INFO L225 Difference]: With dead ends: 957 [2022-04-06 08:33:56,102 INFO L226 Difference]: Without dead ends: 957 [2022-04-06 08:33:56,102 INFO L912 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 [2022-04-06 08:33:56,103 INFO L913 BasicCegarLoop]: 669 mSDtfsCounter, 1857 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:33:56,103 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1865 Valid, 748 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 08:33:56,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-04-06 08:33:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 754. [2022-04-06 08:33:56,113 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) [2022-04-06 08:33:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1052 transitions. [2022-04-06 08:33:56,115 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1052 transitions. Word has length 40 [2022-04-06 08:33:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:33:56,116 INFO L478 AbstractCegarLoop]: Abstraction has 754 states and 1052 transitions. [2022-04-06 08:33:56,117 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) [2022-04-06 08:33:56,117 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1052 transitions. [2022-04-06 08:33:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-04-06 08:33:56,118 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:56,119 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:56,119 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-06 08:33:56,119 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash 938541339, now seen corresponding path program 1 times [2022-04-06 08:33:56,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:56,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138588638] [2022-04-06 08:33:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:56,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:56,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:33:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-04-06 08:33:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:56,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:56,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138588638] [2022-04-06 08:33:56,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138588638] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:56,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:56,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 08:33:56,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97819423] [2022-04-06 08:33:56,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:56,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 08:33:56,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:56,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 08:33:56,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 08:33:56,234 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) [2022-04-06 08:33:57,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:33:57,458 INFO L93 Difference]: Finished difference Result 934 states and 1345 transitions. [2022-04-06 08:33:57,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 08:33:57,458 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 [2022-04-06 08:33:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:33:57,461 INFO L225 Difference]: With dead ends: 934 [2022-04-06 08:33:57,461 INFO L226 Difference]: Without dead ends: 934 [2022-04-06 08:33:57,461 INFO L912 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 [2022-04-06 08:33:57,462 INFO L913 BasicCegarLoop]: 788 mSDtfsCounter, 936 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:33:57,462 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1342 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 08:33:57,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2022-04-06 08:33:57,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 754. [2022-04-06 08:33:57,474 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) [2022-04-06 08:33:57,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1051 transitions. [2022-04-06 08:33:57,476 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1051 transitions. Word has length 46 [2022-04-06 08:33:57,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:33:57,476 INFO L478 AbstractCegarLoop]: Abstraction has 754 states and 1051 transitions. [2022-04-06 08:33:57,476 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) [2022-04-06 08:33:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1051 transitions. [2022-04-06 08:33:57,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 08:33:57,479 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:57,479 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:57,479 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-06 08:33:57,479 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:57,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:57,479 INFO L85 PathProgramCache]: Analyzing trace with hash -747319687, now seen corresponding path program 1 times [2022-04-06 08:33:57,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:57,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352280137] [2022-04-06 08:33:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:57,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:57,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:57,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:57,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:33:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:57,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-04-06 08:33:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:57,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:57,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352280137] [2022-04-06 08:33:57,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352280137] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:57,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:57,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 08:33:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915937483] [2022-04-06 08:33:57,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:57,583 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 08:33:57,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:57,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 08:33:57,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 08:33:57,583 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) [2022-04-06 08:33:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:33:58,595 INFO L93 Difference]: Finished difference Result 889 states and 1287 transitions. [2022-04-06 08:33:58,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 08:33:58,596 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 [2022-04-06 08:33:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:33:58,598 INFO L225 Difference]: With dead ends: 889 [2022-04-06 08:33:58,598 INFO L226 Difference]: Without dead ends: 889 [2022-04-06 08:33:58,599 INFO L912 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 [2022-04-06 08:33:58,599 INFO L913 BasicCegarLoop]: 664 mSDtfsCounter, 1519 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 08:33:58,600 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1110 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 08:33:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-04-06 08:33:58,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 743. [2022-04-06 08:33:58,611 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) [2022-04-06 08:33:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1038 transitions. [2022-04-06 08:33:58,613 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1038 transitions. Word has length 47 [2022-04-06 08:33:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:33:58,613 INFO L478 AbstractCegarLoop]: Abstraction has 743 states and 1038 transitions. [2022-04-06 08:33:58,614 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) [2022-04-06 08:33:58,614 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1038 transitions. [2022-04-06 08:33:58,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 08:33:58,615 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:33:58,615 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:33:58,615 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-06 08:33:58,616 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:33:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:33:58,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1537806195, now seen corresponding path program 1 times [2022-04-06 08:33:58,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:33:58,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848542271] [2022-04-06 08:33:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:33:58,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:33:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:33:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:58,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:33:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:58,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:33:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:58,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:33:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:58,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:33:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:33:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:33:58,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:33:58,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848542271] [2022-04-06 08:33:58,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848542271] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:33:58,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:33:58,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 08:33:58,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031681258] [2022-04-06 08:33:58,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:33:58,770 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 08:33:58,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:33:58,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 08:33:58,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-06 08:33:58,771 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) [2022-04-06 08:34:00,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:00,529 INFO L93 Difference]: Finished difference Result 998 states and 1427 transitions. [2022-04-06 08:34:00,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 08:34:00,530 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 [2022-04-06 08:34:00,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:00,532 INFO L225 Difference]: With dead ends: 998 [2022-04-06 08:34:00,533 INFO L226 Difference]: Without dead ends: 998 [2022-04-06 08:34:00,533 INFO L912 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 [2022-04-06 08:34:00,533 INFO L913 BasicCegarLoop]: 739 mSDtfsCounter, 2190 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:00,533 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2219 Valid, 1924 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 08:34:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-04-06 08:34:00,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 786. [2022-04-06 08:34:00,545 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) [2022-04-06 08:34:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1099 transitions. [2022-04-06 08:34:00,547 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1099 transitions. Word has length 48 [2022-04-06 08:34:00,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:00,547 INFO L478 AbstractCegarLoop]: Abstraction has 786 states and 1099 transitions. [2022-04-06 08:34:00,547 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) [2022-04-06 08:34:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1099 transitions. [2022-04-06 08:34:00,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 08:34:00,549 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:00,549 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:00,549 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-06 08:34:00,549 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:00,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash 520235537, now seen corresponding path program 1 times [2022-04-06 08:34:00,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:00,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210514366] [2022-04-06 08:34:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:00,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:00,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:00,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:34:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:00,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:00,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:00,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:00,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210514366] [2022-04-06 08:34:00,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210514366] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:00,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:00,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 08:34:00,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781406550] [2022-04-06 08:34:00,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:00,689 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 08:34:00,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:00,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 08:34:00,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-06 08:34:00,689 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) [2022-04-06 08:34:02,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:02,383 INFO L93 Difference]: Finished difference Result 919 states and 1326 transitions. [2022-04-06 08:34:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 08:34:02,384 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 [2022-04-06 08:34:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:02,387 INFO L225 Difference]: With dead ends: 919 [2022-04-06 08:34:02,387 INFO L226 Difference]: Without dead ends: 919 [2022-04-06 08:34:02,387 INFO L912 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 [2022-04-06 08:34:02,388 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 1194 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:02,388 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 1422 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 08:34:02,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-04-06 08:34:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 789. [2022-04-06 08:34:02,398 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) [2022-04-06 08:34:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1103 transitions. [2022-04-06 08:34:02,400 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1103 transitions. Word has length 50 [2022-04-06 08:34:02,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:02,400 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1103 transitions. [2022-04-06 08:34:02,400 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) [2022-04-06 08:34:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1103 transitions. [2022-04-06 08:34:02,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 08:34:02,402 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:02,402 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:02,402 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-06 08:34:02,402 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:02,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:02,402 INFO L85 PathProgramCache]: Analyzing trace with hash -476836816, now seen corresponding path program 1 times [2022-04-06 08:34:02,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:02,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139437848] [2022-04-06 08:34:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:02,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:02,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:34:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:02,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:02,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:02,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139437848] [2022-04-06 08:34:02,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139437848] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:02,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:02,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:34:02,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814458859] [2022-04-06 08:34:02,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:02,571 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:34:02,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:02,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:34:02,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:34:02,571 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) [2022-04-06 08:34:04,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:04,210 INFO L93 Difference]: Finished difference Result 906 states and 1308 transitions. [2022-04-06 08:34:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 08:34:04,211 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 [2022-04-06 08:34:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:04,213 INFO L225 Difference]: With dead ends: 906 [2022-04-06 08:34:04,213 INFO L226 Difference]: Without dead ends: 906 [2022-04-06 08:34:04,214 INFO L912 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 [2022-04-06 08:34:04,214 INFO L913 BasicCegarLoop]: 649 mSDtfsCounter, 2247 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:04,214 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2256 Valid, 1762 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 08:34:04,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-04-06 08:34:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 784. [2022-04-06 08:34:04,224 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) [2022-04-06 08:34:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1093 transitions. [2022-04-06 08:34:04,226 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1093 transitions. Word has length 50 [2022-04-06 08:34:04,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:04,226 INFO L478 AbstractCegarLoop]: Abstraction has 784 states and 1093 transitions. [2022-04-06 08:34:04,226 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) [2022-04-06 08:34:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1093 transitions. [2022-04-06 08:34:04,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-06 08:34:04,227 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:04,227 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:04,228 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-06 08:34:04,228 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:04,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1976586256, now seen corresponding path program 1 times [2022-04-06 08:34:04,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:04,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538581459] [2022-04-06 08:34:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:04,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:04,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:04,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:34:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:04,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:04,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538581459] [2022-04-06 08:34:04,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538581459] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:04,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:04,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-06 08:34:04,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880464189] [2022-04-06 08:34:04,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:04,402 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 08:34:04,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:04,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 08:34:04,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-04-06 08:34:04,403 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) [2022-04-06 08:34:05,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:05,435 INFO L93 Difference]: Finished difference Result 1060 states and 1513 transitions. [2022-04-06 08:34:05,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 08:34:05,435 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 [2022-04-06 08:34:05,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:05,438 INFO L225 Difference]: With dead ends: 1060 [2022-04-06 08:34:05,438 INFO L226 Difference]: Without dead ends: 1060 [2022-04-06 08:34:05,438 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-04-06 08:34:05,439 INFO L913 BasicCegarLoop]: 796 mSDtfsCounter, 887 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:05,439 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 1331 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 08:34:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2022-04-06 08:34:05,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 837. [2022-04-06 08:34:05,449 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) [2022-04-06 08:34:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1150 transitions. [2022-04-06 08:34:05,455 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1150 transitions. Word has length 50 [2022-04-06 08:34:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:05,455 INFO L478 AbstractCegarLoop]: Abstraction has 837 states and 1150 transitions. [2022-04-06 08:34:05,456 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) [2022-04-06 08:34:05,456 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1150 transitions. [2022-04-06 08:34:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 08:34:05,457 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:05,457 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:05,457 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-06 08:34:05,457 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2001757018, now seen corresponding path program 1 times [2022-04-06 08:34:05,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:05,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306882808] [2022-04-06 08:34:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:05,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:05,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:05,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:05,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:05,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306882808] [2022-04-06 08:34:05,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306882808] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:05,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:05,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 08:34:05,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91363494] [2022-04-06 08:34:05,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:05,596 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 08:34:05,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:05,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 08:34:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-04-06 08:34:05,596 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) [2022-04-06 08:34:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:07,064 INFO L93 Difference]: Finished difference Result 977 states and 1385 transitions. [2022-04-06 08:34:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 08:34:07,064 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 [2022-04-06 08:34:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:07,067 INFO L225 Difference]: With dead ends: 977 [2022-04-06 08:34:07,067 INFO L226 Difference]: Without dead ends: 977 [2022-04-06 08:34:07,068 INFO L912 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 [2022-04-06 08:34:07,068 INFO L913 BasicCegarLoop]: 690 mSDtfsCounter, 1173 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:07,068 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 1433 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 08:34:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-04-06 08:34:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 855. [2022-04-06 08:34:07,081 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) [2022-04-06 08:34:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1171 transitions. [2022-04-06 08:34:07,082 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1171 transitions. Word has length 52 [2022-04-06 08:34:07,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:07,082 INFO L478 AbstractCegarLoop]: Abstraction has 855 states and 1171 transitions. [2022-04-06 08:34:07,082 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) [2022-04-06 08:34:07,082 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1171 transitions. [2022-04-06 08:34:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 08:34:07,084 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:07,084 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:07,084 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-06 08:34:07,084 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:07,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2085636174, now seen corresponding path program 1 times [2022-04-06 08:34:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:07,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448256914] [2022-04-06 08:34:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:07,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:07,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:07,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 08:34:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-04-06 08:34:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:07,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:07,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448256914] [2022-04-06 08:34:07,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448256914] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:07,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:07,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 08:34:07,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161277305] [2022-04-06 08:34:07,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:07,181 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 08:34:07,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 08:34:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-06 08:34:07,181 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) [2022-04-06 08:34:08,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:08,554 INFO L93 Difference]: Finished difference Result 947 states and 1347 transitions. [2022-04-06 08:34:08,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:34:08,555 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 [2022-04-06 08:34:08,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:08,559 INFO L225 Difference]: With dead ends: 947 [2022-04-06 08:34:08,559 INFO L226 Difference]: Without dead ends: 947 [2022-04-06 08:34:08,559 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-04-06 08:34:08,560 INFO L913 BasicCegarLoop]: 638 mSDtfsCounter, 1398 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:08,560 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 1164 Invalid, 1847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 08:34:08,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-04-06 08:34:08,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 827. [2022-04-06 08:34:08,573 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) [2022-04-06 08:34:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1134 transitions. [2022-04-06 08:34:08,575 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1134 transitions. Word has length 54 [2022-04-06 08:34:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:08,575 INFO L478 AbstractCegarLoop]: Abstraction has 827 states and 1134 transitions. [2022-04-06 08:34:08,576 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) [2022-04-06 08:34:08,576 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1134 transitions. [2022-04-06 08:34:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 08:34:08,577 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:08,577 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:08,578 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-06 08:34:08,578 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:08,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1175170233, now seen corresponding path program 1 times [2022-04-06 08:34:08,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:08,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991824580] [2022-04-06 08:34:08,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:08,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:34:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:08,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:08,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:08,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991824580] [2022-04-06 08:34:08,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991824580] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:08,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:08,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:34:08,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461772542] [2022-04-06 08:34:08,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:08,838 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:34:08,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:08,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:34:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:34:08,839 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) [2022-04-06 08:34:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:10,644 INFO L93 Difference]: Finished difference Result 969 states and 1371 transitions. [2022-04-06 08:34:10,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 08:34:10,645 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 [2022-04-06 08:34:10,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:10,647 INFO L225 Difference]: With dead ends: 969 [2022-04-06 08:34:10,647 INFO L226 Difference]: Without dead ends: 968 [2022-04-06 08:34:10,647 INFO L912 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 [2022-04-06 08:34:10,648 INFO L913 BasicCegarLoop]: 704 mSDtfsCounter, 1105 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 3442 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 3854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:10,648 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 2406 Invalid, 3854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3442 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 08:34:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-04-06 08:34:10,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 846. [2022-04-06 08:34:10,657 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) [2022-04-06 08:34:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1155 transitions. [2022-04-06 08:34:10,658 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1155 transitions. Word has length 51 [2022-04-06 08:34:10,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:10,659 INFO L478 AbstractCegarLoop]: Abstraction has 846 states and 1155 transitions. [2022-04-06 08:34:10,659 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) [2022-04-06 08:34:10,659 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1155 transitions. [2022-04-06 08:34:10,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-04-06 08:34:10,661 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:10,661 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:10,661 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-04-06 08:34:10,661 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:10,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:10,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1175201977, now seen corresponding path program 1 times [2022-04-06 08:34:10,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:10,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434339463] [2022-04-06 08:34:10,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:10,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:10,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:10,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:10,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:34:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:10,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:10,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:10,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434339463] [2022-04-06 08:34:10,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434339463] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:10,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:10,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:34:10,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526861363] [2022-04-06 08:34:10,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:10,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:34:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:10,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:34:10,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:34:10,811 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) [2022-04-06 08:34:12,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:12,444 INFO L93 Difference]: Finished difference Result 978 states and 1382 transitions. [2022-04-06 08:34:12,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 08:34:12,451 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 [2022-04-06 08:34:12,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:12,455 INFO L225 Difference]: With dead ends: 978 [2022-04-06 08:34:12,455 INFO L226 Difference]: Without dead ends: 957 [2022-04-06 08:34:12,455 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:34:12,455 INFO L913 BasicCegarLoop]: 703 mSDtfsCounter, 1099 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 3502 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 3914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 3502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:12,456 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 2337 Invalid, 3914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 3502 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 08:34:12,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-04-06 08:34:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-04-06 08:34:12,473 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) [2022-04-06 08:34:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1141 transitions. [2022-04-06 08:34:12,475 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1141 transitions. Word has length 51 [2022-04-06 08:34:12,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:12,475 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1141 transitions. [2022-04-06 08:34:12,475 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) [2022-04-06 08:34:12,475 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1141 transitions. [2022-04-06 08:34:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-04-06 08:34:12,478 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:12,479 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:12,479 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-04-06 08:34:12,479 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:12,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1955463855, now seen corresponding path program 1 times [2022-04-06 08:34:12,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:12,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812729857] [2022-04-06 08:34:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:12,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:12,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:12,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:12,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:12,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812729857] [2022-04-06 08:34:12,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812729857] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:12,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:12,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 08:34:12,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076301000] [2022-04-06 08:34:12,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:12,698 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 08:34:12,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:12,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 08:34:12,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:34:12,699 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) [2022-04-06 08:34:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:15,069 INFO L93 Difference]: Finished difference Result 957 states and 1356 transitions. [2022-04-06 08:34:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 08:34:15,070 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 [2022-04-06 08:34:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:15,072 INFO L225 Difference]: With dead ends: 957 [2022-04-06 08:34:15,072 INFO L226 Difference]: Without dead ends: 957 [2022-04-06 08:34:15,073 INFO L912 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 [2022-04-06 08:34:15,073 INFO L913 BasicCegarLoop]: 653 mSDtfsCounter, 1580 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 3414 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 3925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 3414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:15,073 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 1670 Invalid, 3925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 3414 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-04-06 08:34:15,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-04-06 08:34:15,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 833. [2022-04-06 08:34:15,083 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) [2022-04-06 08:34:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1140 transitions. [2022-04-06 08:34:15,084 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1140 transitions. Word has length 53 [2022-04-06 08:34:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:15,084 INFO L478 AbstractCegarLoop]: Abstraction has 833 states and 1140 transitions. [2022-04-06 08:34:15,084 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) [2022-04-06 08:34:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1140 transitions. [2022-04-06 08:34:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 08:34:15,086 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:15,086 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:15,086 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-04-06 08:34:15,086 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:15,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1151246814, now seen corresponding path program 1 times [2022-04-06 08:34:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:15,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172592383] [2022-04-06 08:34:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:15,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:15,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:34:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:15,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172592383] [2022-04-06 08:34:15,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172592383] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:15,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:15,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 08:34:15,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413676136] [2022-04-06 08:34:15,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:15,301 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 08:34:15,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:15,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 08:34:15,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-04-06 08:34:15,302 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) [2022-04-06 08:34:16,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:16,999 INFO L93 Difference]: Finished difference Result 963 states and 1360 transitions. [2022-04-06 08:34:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 08:34:16,999 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 [2022-04-06 08:34:16,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:17,002 INFO L225 Difference]: With dead ends: 963 [2022-04-06 08:34:17,002 INFO L226 Difference]: Without dead ends: 931 [2022-04-06 08:34:17,002 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-04-06 08:34:17,002 INFO L913 BasicCegarLoop]: 656 mSDtfsCounter, 1920 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:17,003 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1935 Valid, 1278 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1884 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 08:34:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-04-06 08:34:17,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 805. [2022-04-06 08:34:17,013 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) [2022-04-06 08:34:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1108 transitions. [2022-04-06 08:34:17,015 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1108 transitions. Word has length 52 [2022-04-06 08:34:17,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:17,015 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1108 transitions. [2022-04-06 08:34:17,015 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) [2022-04-06 08:34:17,015 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1108 transitions. [2022-04-06 08:34:17,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-04-06 08:34:17,016 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:17,016 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:17,016 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-04-06 08:34:17,017 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:17,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash -437720056, now seen corresponding path program 1 times [2022-04-06 08:34:17,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:17,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649425550] [2022-04-06 08:34:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:17,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:17,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:17,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:17,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:17,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:17,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649425550] [2022-04-06 08:34:17,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649425550] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:17,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:17,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 08:34:17,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695411857] [2022-04-06 08:34:17,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:17,281 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 08:34:17,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:17,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 08:34:17,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:34:17,282 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) [2022-04-06 08:34:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:19,476 INFO L93 Difference]: Finished difference Result 927 states and 1321 transitions. [2022-04-06 08:34:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 08:34:19,476 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 [2022-04-06 08:34:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:19,479 INFO L225 Difference]: With dead ends: 927 [2022-04-06 08:34:19,479 INFO L226 Difference]: Without dead ends: 927 [2022-04-06 08:34:19,479 INFO L912 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 [2022-04-06 08:34:19,480 INFO L913 BasicCegarLoop]: 624 mSDtfsCounter, 1892 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1918 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:19,480 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1918 Valid, 1311 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 08:34:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2022-04-06 08:34:19,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 805. [2022-04-06 08:34:19,491 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) [2022-04-06 08:34:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1107 transitions. [2022-04-06 08:34:19,493 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1107 transitions. Word has length 54 [2022-04-06 08:34:19,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:19,493 INFO L478 AbstractCegarLoop]: Abstraction has 805 states and 1107 transitions. [2022-04-06 08:34:19,493 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) [2022-04-06 08:34:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1107 transitions. [2022-04-06 08:34:19,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 08:34:19,495 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:19,495 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:19,495 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-04-06 08:34:19,495 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:19,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:19,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1268427453, now seen corresponding path program 1 times [2022-04-06 08:34:19,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:19,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960019689] [2022-04-06 08:34:19,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:19,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:19,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:19,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:19,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:19,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:19,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960019689] [2022-04-06 08:34:19,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960019689] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:19,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:19,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 08:34:19,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838593474] [2022-04-06 08:34:19,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:19,684 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 08:34:19,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:19,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 08:34:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-04-06 08:34:19,685 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) [2022-04-06 08:34:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:22,145 INFO L93 Difference]: Finished difference Result 953 states and 1353 transitions. [2022-04-06 08:34:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 08:34:22,147 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 [2022-04-06 08:34:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:22,152 INFO L225 Difference]: With dead ends: 953 [2022-04-06 08:34:22,152 INFO L226 Difference]: Without dead ends: 916 [2022-04-06 08:34:22,155 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:34:22,156 INFO L913 BasicCegarLoop]: 675 mSDtfsCounter, 728 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 5346 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 5642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 5346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:22,156 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 2717 Invalid, 5642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 5346 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-06 08:34:22,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-04-06 08:34:22,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 796. [2022-04-06 08:34:22,167 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) [2022-04-06 08:34:22,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1083 transitions. [2022-04-06 08:34:22,169 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1083 transitions. Word has length 55 [2022-04-06 08:34:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:22,169 INFO L478 AbstractCegarLoop]: Abstraction has 796 states and 1083 transitions. [2022-04-06 08:34:22,169 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) [2022-04-06 08:34:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1083 transitions. [2022-04-06 08:34:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 08:34:22,172 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:22,172 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:22,172 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-04-06 08:34:22,172 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:22,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash -979957660, now seen corresponding path program 1 times [2022-04-06 08:34:22,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:22,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141871816] [2022-04-06 08:34:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:22,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:34:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:34:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:22,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:22,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141871816] [2022-04-06 08:34:22,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141871816] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:22,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:22,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 08:34:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455985348] [2022-04-06 08:34:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:22,426 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 08:34:22,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 08:34:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-06 08:34:22,426 INFO L87 Difference]: Start difference. First operand 796 states and 1083 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) [2022-04-06 08:34:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:25,283 INFO L93 Difference]: Finished difference Result 929 states and 1307 transitions. [2022-04-06 08:34:25,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 08:34:25,284 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 [2022-04-06 08:34:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:25,286 INFO L225 Difference]: With dead ends: 929 [2022-04-06 08:34:25,287 INFO L226 Difference]: Without dead ends: 914 [2022-04-06 08:34:25,287 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-06 08:34:25,287 INFO L913 BasicCegarLoop]: 670 mSDtfsCounter, 338 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 5908 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 5908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:25,287 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 2798 Invalid, 6046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 5908 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-04-06 08:34:25,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-04-06 08:34:25,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 794. [2022-04-06 08:34:25,306 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) [2022-04-06 08:34:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1079 transitions. [2022-04-06 08:34:25,307 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1079 transitions. Word has length 56 [2022-04-06 08:34:25,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:25,307 INFO L478 AbstractCegarLoop]: Abstraction has 794 states and 1079 transitions. [2022-04-06 08:34:25,308 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) [2022-04-06 08:34:25,308 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1079 transitions. [2022-04-06 08:34:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 08:34:25,309 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:25,309 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:25,309 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-04-06 08:34:25,310 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:25,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:25,310 INFO L85 PathProgramCache]: Analyzing trace with hash -406359554, now seen corresponding path program 1 times [2022-04-06 08:34:25,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:25,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504749467] [2022-04-06 08:34:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:25,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:34:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:25,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:25,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:25,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:25,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504749467] [2022-04-06 08:34:25,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504749467] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:25,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:25,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 08:34:25,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174846648] [2022-04-06 08:34:25,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:25,479 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 08:34:25,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:25,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 08:34:25,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-04-06 08:34:25,480 INFO L87 Difference]: Start difference. First operand 794 states and 1079 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) [2022-04-06 08:34:27,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:27,786 INFO L93 Difference]: Finished difference Result 924 states and 1300 transitions. [2022-04-06 08:34:27,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 08:34:27,787 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 [2022-04-06 08:34:27,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:27,789 INFO L225 Difference]: With dead ends: 924 [2022-04-06 08:34:27,789 INFO L226 Difference]: Without dead ends: 909 [2022-04-06 08:34:27,789 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-06 08:34:27,790 INFO L913 BasicCegarLoop]: 654 mSDtfsCounter, 975 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 5422 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 5820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 5422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:27,790 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 2658 Invalid, 5820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 5422 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 08:34:27,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-04-06 08:34:27,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 789. [2022-04-06 08:34:27,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 618 states have (on average 1.3511326860841424) internal successors, (835), 630 states have internal predecessors, (835), 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) [2022-04-06 08:34:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1072 transitions. [2022-04-06 08:34:27,800 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1072 transitions. Word has length 55 [2022-04-06 08:34:27,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:27,800 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1072 transitions. [2022-04-06 08:34:27,800 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) [2022-04-06 08:34:27,800 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1072 transitions. [2022-04-06 08:34:27,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 08:34:27,802 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:27,802 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:27,802 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-04-06 08:34:27,802 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:27,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash 301163047, now seen corresponding path program 1 times [2022-04-06 08:34:27,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:27,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114350210] [2022-04-06 08:34:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:27,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:27,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:27,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:27,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:27,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:27,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:34:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:27,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:34:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:27,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114350210] [2022-04-06 08:34:27,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114350210] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:27,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:27,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 08:34:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297270756] [2022-04-06 08:34:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:27,948 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 08:34:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:27,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 08:34:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 08:34:27,948 INFO L87 Difference]: Start difference. First operand 789 states and 1072 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) [2022-04-06 08:34:29,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:29,187 INFO L93 Difference]: Finished difference Result 931 states and 1303 transitions. [2022-04-06 08:34:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 08:34:29,188 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 [2022-04-06 08:34:29,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:29,190 INFO L225 Difference]: With dead ends: 931 [2022-04-06 08:34:29,190 INFO L226 Difference]: Without dead ends: 931 [2022-04-06 08:34:29,191 INFO L912 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 [2022-04-06 08:34:29,191 INFO L913 BasicCegarLoop]: 675 mSDtfsCounter, 2591 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2601 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:29,191 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2601 Valid, 1163 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 08:34:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-04-06 08:34:29,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 789. [2022-04-06 08:34:29,200 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) [2022-04-06 08:34:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1071 transitions. [2022-04-06 08:34:29,201 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1071 transitions. Word has length 56 [2022-04-06 08:34:29,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:29,202 INFO L478 AbstractCegarLoop]: Abstraction has 789 states and 1071 transitions. [2022-04-06 08:34:29,202 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) [2022-04-06 08:34:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1071 transitions. [2022-04-06 08:34:29,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-06 08:34:29,203 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:29,203 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:29,203 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-04-06 08:34:29,203 INFO L403 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:29,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:29,204 INFO L85 PathProgramCache]: Analyzing trace with hash -664547493, now seen corresponding path program 1 times [2022-04-06 08:34:29,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:29,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597087723] [2022-04-06 08:34:29,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:29,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:29,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:29,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-04-06 08:34:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:34:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:34:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:29,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:29,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597087723] [2022-04-06 08:34:29,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597087723] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:29,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:29,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-06 08:34:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646180155] [2022-04-06 08:34:29,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:29,328 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-06 08:34:29,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:29,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-06 08:34:29,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-06 08:34:29,328 INFO L87 Difference]: Start difference. First operand 789 states and 1071 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 08:34:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:30,371 INFO L93 Difference]: Finished difference Result 1013 states and 1405 transitions. [2022-04-06 08:34:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 08:34:30,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 61 [2022-04-06 08:34:30,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:30,384 INFO L225 Difference]: With dead ends: 1013 [2022-04-06 08:34:30,384 INFO L226 Difference]: Without dead ends: 1013 [2022-04-06 08:34:30,384 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-04-06 08:34:30,385 INFO L913 BasicCegarLoop]: 660 mSDtfsCounter, 1307 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:30,386 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1329 Valid, 1147 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 08:34:30,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-04-06 08:34:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 830. [2022-04-06 08:34:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 651 states have (on average 1.337941628264209) internal successors, (871), 662 states have internal predecessors, (871), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (135), 121 states have call predecessors, (135), 100 states have call successors, (135) [2022-04-06 08:34:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1111 transitions. [2022-04-06 08:34:30,404 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1111 transitions. Word has length 61 [2022-04-06 08:34:30,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:30,404 INFO L478 AbstractCegarLoop]: Abstraction has 830 states and 1111 transitions. [2022-04-06 08:34:30,404 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-06 08:34:30,405 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1111 transitions. [2022-04-06 08:34:30,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-06 08:34:30,406 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:30,406 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:30,406 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-04-06 08:34:30,406 INFO L403 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:30,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:30,407 INFO L85 PathProgramCache]: Analyzing trace with hash -917115183, now seen corresponding path program 1 times [2022-04-06 08:34:30,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:30,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261986836] [2022-04-06 08:34:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:30,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:30,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:30,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:30,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:30,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:30,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:34:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:30,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:34:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:30,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:30,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261986836] [2022-04-06 08:34:30,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261986836] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:30,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:30,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 08:34:30,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680457029] [2022-04-06 08:34:30,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:30,677 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 08:34:30,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:30,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 08:34:30,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 08:34:30,678 INFO L87 Difference]: Start difference. First operand 830 states and 1111 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) [2022-04-06 08:34:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:33,633 INFO L93 Difference]: Finished difference Result 995 states and 1380 transitions. [2022-04-06 08:34:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 08:34:33,634 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 [2022-04-06 08:34:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:33,637 INFO L225 Difference]: With dead ends: 995 [2022-04-06 08:34:33,639 INFO L226 Difference]: Without dead ends: 972 [2022-04-06 08:34:33,639 INFO L912 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 [2022-04-06 08:34:33,640 INFO L913 BasicCegarLoop]: 634 mSDtfsCounter, 1310 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 6997 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 3573 SdHoareTripleChecker+Invalid, 7541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 6997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:33,641 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 3573 Invalid, 7541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 6997 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-04-06 08:34:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-04-06 08:34:33,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 829. [2022-04-06 08:34:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 650 states have (on average 1.323076923076923) internal successors, (860), 661 states have internal predecessors, (860), 105 states have call successors, (105), 53 states have call predecessors, (105), 73 states have return successors, (135), 121 states have call predecessors, (135), 100 states have call successors, (135) [2022-04-06 08:34:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1100 transitions. [2022-04-06 08:34:33,653 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1100 transitions. Word has length 59 [2022-04-06 08:34:33,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:33,654 INFO L478 AbstractCegarLoop]: Abstraction has 829 states and 1100 transitions. [2022-04-06 08:34:33,654 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) [2022-04-06 08:34:33,654 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1100 transitions. [2022-04-06 08:34:33,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-04-06 08:34:33,655 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:33,655 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:33,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-04-06 08:34:33,655 INFO L403 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:33,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1794647803, now seen corresponding path program 1 times [2022-04-06 08:34:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:33,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030327846] [2022-04-06 08:34:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:33,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:33,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:33,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030327846] [2022-04-06 08:34:33,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030327846] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:33,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:33,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 08:34:33,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841211621] [2022-04-06 08:34:33,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:33,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 08:34:33,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 08:34:33,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-04-06 08:34:33,900 INFO L87 Difference]: Start difference. First operand 829 states and 1100 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) [2022-04-06 08:34:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:36,546 INFO L93 Difference]: Finished difference Result 984 states and 1354 transitions. [2022-04-06 08:34:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 08:34:36,547 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 [2022-04-06 08:34:36,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:36,552 INFO L225 Difference]: With dead ends: 984 [2022-04-06 08:34:36,552 INFO L226 Difference]: Without dead ends: 967 [2022-04-06 08:34:36,553 INFO L912 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 [2022-04-06 08:34:36,556 INFO L913 BasicCegarLoop]: 650 mSDtfsCounter, 630 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 5813 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 6075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 5813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:36,556 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 2955 Invalid, 6075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 5813 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-04-06 08:34:36,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-04-06 08:34:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 826. [2022-04-06 08:34:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 648 states have (on average 1.3225308641975309) internal successors, (857), 659 states have internal predecessors, (857), 104 states have call successors, (104), 53 states have call predecessors, (104), 73 states have return successors, (134), 120 states have call predecessors, (134), 99 states have call successors, (134) [2022-04-06 08:34:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1095 transitions. [2022-04-06 08:34:36,581 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1095 transitions. Word has length 58 [2022-04-06 08:34:36,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:36,581 INFO L478 AbstractCegarLoop]: Abstraction has 826 states and 1095 transitions. [2022-04-06 08:34:36,581 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) [2022-04-06 08:34:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1095 transitions. [2022-04-06 08:34:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-04-06 08:34:36,583 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:36,583 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:36,583 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-04-06 08:34:36,584 INFO L403 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:36,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1644249478, now seen corresponding path program 1 times [2022-04-06 08:34:36,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:36,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104263481] [2022-04-06 08:34:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:36,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:36,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:36,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:36,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:36,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:36,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 08:34:36,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:36,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:36,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104263481] [2022-04-06 08:34:36,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104263481] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:36,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:36,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 08:34:36,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787130673] [2022-04-06 08:34:36,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:36,815 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 08:34:36,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 08:34:36,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-06 08:34:36,816 INFO L87 Difference]: Start difference. First operand 826 states and 1095 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) [2022-04-06 08:34:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:39,190 INFO L93 Difference]: Finished difference Result 988 states and 1355 transitions. [2022-04-06 08:34:39,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 08:34:39,190 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 [2022-04-06 08:34:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:39,193 INFO L225 Difference]: With dead ends: 988 [2022-04-06 08:34:39,193 INFO L226 Difference]: Without dead ends: 952 [2022-04-06 08:34:39,193 INFO L912 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 [2022-04-06 08:34:39,193 INFO L913 BasicCegarLoop]: 626 mSDtfsCounter, 664 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 5040 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 5323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:39,193 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 2785 Invalid, 5323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 5040 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 08:34:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-04-06 08:34:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 814. [2022-04-06 08:34:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 639 states have (on average 1.3176838810641627) internal successors, (842), 650 states have internal predecessors, (842), 101 states have call successors, (101), 53 states have call predecessors, (101), 73 states have return successors, (131), 117 states have call predecessors, (131), 96 states have call successors, (131) [2022-04-06 08:34:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1074 transitions. [2022-04-06 08:34:39,203 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1074 transitions. Word has length 59 [2022-04-06 08:34:39,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:39,203 INFO L478 AbstractCegarLoop]: Abstraction has 814 states and 1074 transitions. [2022-04-06 08:34:39,203 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) [2022-04-06 08:34:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1074 transitions. [2022-04-06 08:34:39,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 08:34:39,205 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:39,205 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:39,205 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-04-06 08:34:39,205 INFO L403 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash -887424146, now seen corresponding path program 1 times [2022-04-06 08:34:39,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:39,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256114089] [2022-04-06 08:34:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:39,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:39,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:34:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:39,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:34:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:39,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 08:34:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:39,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:39,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256114089] [2022-04-06 08:34:39,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256114089] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:39,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:39,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 08:34:39,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601245725] [2022-04-06 08:34:39,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:39,348 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 08:34:39,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:39,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 08:34:39,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-04-06 08:34:39,348 INFO L87 Difference]: Start difference. First operand 814 states and 1074 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) [2022-04-06 08:34:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:41,113 INFO L93 Difference]: Finished difference Result 1013 states and 1412 transitions. [2022-04-06 08:34:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 08:34:41,114 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 [2022-04-06 08:34:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:41,116 INFO L225 Difference]: With dead ends: 1013 [2022-04-06 08:34:41,116 INFO L226 Difference]: Without dead ends: 1013 [2022-04-06 08:34:41,116 INFO L912 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 [2022-04-06 08:34:41,117 INFO L913 BasicCegarLoop]: 609 mSDtfsCounter, 369 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:41,117 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 1777 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 08:34:41,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-04-06 08:34:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 821. [2022-04-06 08:34:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 644 states have (on average 1.3183229813664596) internal successors, (849), 656 states have internal predecessors, (849), 102 states have call successors, (102), 53 states have call predecessors, (102), 74 states have return successors, (138), 118 states have call predecessors, (138), 97 states have call successors, (138) [2022-04-06 08:34:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1089 transitions. [2022-04-06 08:34:41,130 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1089 transitions. Word has length 60 [2022-04-06 08:34:41,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:41,130 INFO L478 AbstractCegarLoop]: Abstraction has 821 states and 1089 transitions. [2022-04-06 08:34:41,131 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) [2022-04-06 08:34:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1089 transitions. [2022-04-06 08:34:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 08:34:41,134 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:41,134 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:41,134 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-04-06 08:34:41,134 INFO L403 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:41,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1397439309, now seen corresponding path program 1 times [2022-04-06 08:34:41,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:41,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084695380] [2022-04-06 08:34:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:41,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:41,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:34:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:41,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:34:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:41,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 08:34:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:41,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:41,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084695380] [2022-04-06 08:34:41,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084695380] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:41,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:41,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 08:34:41,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185406001] [2022-04-06 08:34:41,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:41,336 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 08:34:41,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:41,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 08:34:41,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-04-06 08:34:41,337 INFO L87 Difference]: Start difference. First operand 821 states and 1089 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) [2022-04-06 08:34:43,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:43,138 INFO L93 Difference]: Finished difference Result 982 states and 1358 transitions. [2022-04-06 08:34:43,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 08:34:43,139 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 [2022-04-06 08:34:43,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:43,141 INFO L225 Difference]: With dead ends: 982 [2022-04-06 08:34:43,141 INFO L226 Difference]: Without dead ends: 960 [2022-04-06 08:34:43,141 INFO L912 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 [2022-04-06 08:34:43,142 INFO L913 BasicCegarLoop]: 631 mSDtfsCounter, 688 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 3897 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 4157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 3897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:43,142 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 2511 Invalid, 4157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 3897 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-04-06 08:34:43,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-04-06 08:34:43,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 819. [2022-04-06 08:34:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 643 states have (on average 1.317262830482115) internal successors, (847), 655 states have internal predecessors, (847), 101 states have call successors, (101), 53 states have call predecessors, (101), 74 states have return successors, (137), 117 states have call predecessors, (137), 96 states have call successors, (137) [2022-04-06 08:34:43,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1085 transitions. [2022-04-06 08:34:43,153 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1085 transitions. Word has length 60 [2022-04-06 08:34:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:43,154 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1085 transitions. [2022-04-06 08:34:43,154 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) [2022-04-06 08:34:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1085 transitions. [2022-04-06 08:34:43,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 08:34:43,155 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:43,155 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:43,155 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-04-06 08:34:43,155 INFO L403 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:43,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash 303583592, now seen corresponding path program 1 times [2022-04-06 08:34:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:43,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455510590] [2022-04-06 08:34:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:43,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:43,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 08:34:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:43,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:43,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455510590] [2022-04-06 08:34:43,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455510590] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:43,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:43,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 08:34:43,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367690496] [2022-04-06 08:34:43,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:43,320 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 08:34:43,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:43,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 08:34:43,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-06 08:34:43,320 INFO L87 Difference]: Start difference. First operand 819 states and 1085 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) [2022-04-06 08:34:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:45,009 INFO L93 Difference]: Finished difference Result 962 states and 1332 transitions. [2022-04-06 08:34:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 08:34:45,010 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 [2022-04-06 08:34:45,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:45,012 INFO L225 Difference]: With dead ends: 962 [2022-04-06 08:34:45,012 INFO L226 Difference]: Without dead ends: 962 [2022-04-06 08:34:45,013 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:34:45,013 INFO L913 BasicCegarLoop]: 610 mSDtfsCounter, 330 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 2860 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:45,013 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 1739 Invalid, 2990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2860 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 08:34:45,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2022-04-06 08:34:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 819. [2022-04-06 08:34:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 643 states have (on average 1.3157076205287714) internal successors, (846), 655 states have internal predecessors, (846), 101 states have call successors, (101), 53 states have call predecessors, (101), 74 states have return successors, (137), 117 states have call predecessors, (137), 96 states have call successors, (137) [2022-04-06 08:34:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1084 transitions. [2022-04-06 08:34:45,025 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1084 transitions. Word has length 60 [2022-04-06 08:34:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:45,025 INFO L478 AbstractCegarLoop]: Abstraction has 819 states and 1084 transitions. [2022-04-06 08:34:45,025 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) [2022-04-06 08:34:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1084 transitions. [2022-04-06 08:34:45,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-06 08:34:45,027 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:45,027 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:45,027 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-04-06 08:34:45,027 INFO L403 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:45,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:45,027 INFO L85 PathProgramCache]: Analyzing trace with hash 48847047, now seen corresponding path program 1 times [2022-04-06 08:34:45,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:45,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559867203] [2022-04-06 08:34:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:45,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:45,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:45,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:45,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:45,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 08:34:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:45,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:45,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559867203] [2022-04-06 08:34:45,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559867203] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:45,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:45,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 08:34:45,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503028899] [2022-04-06 08:34:45,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:45,278 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 08:34:45,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:45,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 08:34:45,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-06 08:34:45,278 INFO L87 Difference]: Start difference. First operand 819 states and 1084 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) [2022-04-06 08:34:47,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:47,241 INFO L93 Difference]: Finished difference Result 998 states and 1379 transitions. [2022-04-06 08:34:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 08:34:47,242 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 [2022-04-06 08:34:47,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:47,244 INFO L225 Difference]: With dead ends: 998 [2022-04-06 08:34:47,244 INFO L226 Difference]: Without dead ends: 949 [2022-04-06 08:34:47,245 INFO L912 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 [2022-04-06 08:34:47,246 INFO L913 BasicCegarLoop]: 628 mSDtfsCounter, 670 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 4236 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 4505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 4236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:47,246 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 2850 Invalid, 4505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 4236 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 08:34:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-04-06 08:34:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 811. [2022-04-06 08:34:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 637 states have (on average 1.3108320251177394) internal successors, (835), 649 states have internal predecessors, (835), 99 states have call successors, (99), 53 states have call predecessors, (99), 74 states have return successors, (135), 115 states have call predecessors, (135), 94 states have call successors, (135) [2022-04-06 08:34:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1069 transitions. [2022-04-06 08:34:47,255 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1069 transitions. Word has length 60 [2022-04-06 08:34:47,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:47,255 INFO L478 AbstractCegarLoop]: Abstraction has 811 states and 1069 transitions. [2022-04-06 08:34:47,255 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) [2022-04-06 08:34:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1069 transitions. [2022-04-06 08:34:47,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-04-06 08:34:47,256 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:47,256 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:47,256 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-04-06 08:34:47,257 INFO L403 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:47,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash 330565666, now seen corresponding path program 1 times [2022-04-06 08:34:47,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:47,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897303091] [2022-04-06 08:34:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:47,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:47,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:34:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:34:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:47,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 08:34:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:47,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:47,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:47,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897303091] [2022-04-06 08:34:47,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897303091] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:47,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:47,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:34:47,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145100223] [2022-04-06 08:34:47,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:47,397 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:34:47,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:34:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:34:47,397 INFO L87 Difference]: Start difference. First operand 811 states and 1069 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) [2022-04-06 08:34:48,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:48,984 INFO L93 Difference]: Finished difference Result 965 states and 1350 transitions. [2022-04-06 08:34:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:34:48,984 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 [2022-04-06 08:34:48,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:48,986 INFO L225 Difference]: With dead ends: 965 [2022-04-06 08:34:48,986 INFO L226 Difference]: Without dead ends: 963 [2022-04-06 08:34:48,987 INFO L912 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 [2022-04-06 08:34:48,987 INFO L913 BasicCegarLoop]: 591 mSDtfsCounter, 346 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:48,987 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 1761 Invalid, 2513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 08:34:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-04-06 08:34:48,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 815. [2022-04-06 08:34:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 639 states have (on average 1.3098591549295775) internal successors, (837), 653 states have internal predecessors, (837), 99 states have call successors, (99), 53 states have call predecessors, (99), 76 states have return successors, (151), 115 states have call predecessors, (151), 94 states have call successors, (151) [2022-04-06 08:34:48,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1087 transitions. [2022-04-06 08:34:48,998 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1087 transitions. Word has length 61 [2022-04-06 08:34:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:48,998 INFO L478 AbstractCegarLoop]: Abstraction has 815 states and 1087 transitions. [2022-04-06 08:34:48,998 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) [2022-04-06 08:34:48,998 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1087 transitions. [2022-04-06 08:34:48,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 08:34:48,999 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:49,000 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:49,000 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-04-06 08:34:49,000 INFO L403 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:49,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:49,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1749867339, now seen corresponding path program 1 times [2022-04-06 08:34:49,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:49,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369518597] [2022-04-06 08:34:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:49,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:49,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:34:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:49,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 08:34:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:49,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:49,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:49,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369518597] [2022-04-06 08:34:49,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369518597] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:49,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:49,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 08:34:49,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678932654] [2022-04-06 08:34:49,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:49,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 08:34:49,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:49,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 08:34:49,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 08:34:49,282 INFO L87 Difference]: Start difference. First operand 815 states and 1087 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) [2022-04-06 08:34:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:51,625 INFO L93 Difference]: Finished difference Result 974 states and 1352 transitions. [2022-04-06 08:34:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 08:34:51,626 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 [2022-04-06 08:34:51,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:51,632 INFO L225 Difference]: With dead ends: 974 [2022-04-06 08:34:51,632 INFO L226 Difference]: Without dead ends: 953 [2022-04-06 08:34:51,632 INFO L912 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 [2022-04-06 08:34:51,633 INFO L913 BasicCegarLoop]: 571 mSDtfsCounter, 1504 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 5335 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 5960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 5335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:51,633 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1509 Valid, 2916 Invalid, 5960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 5335 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 08:34:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2022-04-06 08:34:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 813. [2022-04-06 08:34:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 638 states have (on average 1.3087774294670846) internal successors, (835), 652 states have internal predecessors, (835), 98 states have call successors, (98), 53 states have call predecessors, (98), 76 states have return successors, (150), 114 states have call predecessors, (150), 93 states have call successors, (150) [2022-04-06 08:34:51,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1083 transitions. [2022-04-06 08:34:51,656 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1083 transitions. Word has length 62 [2022-04-06 08:34:51,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:51,657 INFO L478 AbstractCegarLoop]: Abstraction has 813 states and 1083 transitions. [2022-04-06 08:34:51,657 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) [2022-04-06 08:34:51,657 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1083 transitions. [2022-04-06 08:34:51,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-04-06 08:34:51,658 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:51,658 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:51,658 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-04-06 08:34:51,658 INFO L403 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2020935180, now seen corresponding path program 1 times [2022-04-06 08:34:51,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:51,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798496124] [2022-04-06 08:34:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:51,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:51,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:51,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:51,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:51,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:34:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:51,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:34:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:51,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798496124] [2022-04-06 08:34:51,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798496124] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:51,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:51,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 08:34:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718663682] [2022-04-06 08:34:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:51,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 08:34:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:51,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 08:34:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:34:51,910 INFO L87 Difference]: Start difference. First operand 813 states and 1083 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) [2022-04-06 08:34:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:53,881 INFO L93 Difference]: Finished difference Result 965 states and 1341 transitions. [2022-04-06 08:34:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 08:34:53,881 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 [2022-04-06 08:34:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:53,883 INFO L225 Difference]: With dead ends: 965 [2022-04-06 08:34:53,884 INFO L226 Difference]: Without dead ends: 946 [2022-04-06 08:34:53,884 INFO L912 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 [2022-04-06 08:34:53,884 INFO L913 BasicCegarLoop]: 594 mSDtfsCounter, 878 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 5221 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 5579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 5221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:53,884 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 3044 Invalid, 5579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 5221 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 08:34:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-04-06 08:34:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 808. [2022-04-06 08:34:53,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 635 states have (on average 1.3086614173228346) internal successors, (831), 649 states have internal predecessors, (831), 97 states have call successors, (97), 53 states have call predecessors, (97), 75 states have return successors, (148), 112 states have call predecessors, (148), 92 states have call successors, (148) [2022-04-06 08:34:53,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1076 transitions. [2022-04-06 08:34:53,896 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1076 transitions. Word has length 62 [2022-04-06 08:34:53,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:53,896 INFO L478 AbstractCegarLoop]: Abstraction has 808 states and 1076 transitions. [2022-04-06 08:34:53,896 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) [2022-04-06 08:34:53,896 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1076 transitions. [2022-04-06 08:34:53,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 08:34:53,898 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:53,898 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:53,898 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-04-06 08:34:53,898 INFO L403 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:53,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:53,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1508171679, now seen corresponding path program 1 times [2022-04-06 08:34:53,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:53,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68150496] [2022-04-06 08:34:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:53,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:53,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:54,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:54,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:34:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:54,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:34:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 08:34:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:54,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:54,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68150496] [2022-04-06 08:34:54,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68150496] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:54,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:54,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 08:34:54,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60076000] [2022-04-06 08:34:54,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:54,176 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 08:34:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 08:34:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 08:34:54,177 INFO L87 Difference]: Start difference. First operand 808 states and 1076 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) [2022-04-06 08:34:56,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:56,536 INFO L93 Difference]: Finished difference Result 967 states and 1341 transitions. [2022-04-06 08:34:56,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 08:34:56,537 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 [2022-04-06 08:34:56,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:56,539 INFO L225 Difference]: With dead ends: 967 [2022-04-06 08:34:56,539 INFO L226 Difference]: Without dead ends: 945 [2022-04-06 08:34:56,539 INFO L912 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 [2022-04-06 08:34:56,539 INFO L913 BasicCegarLoop]: 584 mSDtfsCounter, 931 mSDsluCounter, 2938 mSDsCounter, 0 mSdLazyCounter, 5591 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 3522 SdHoareTripleChecker+Invalid, 5970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 5591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:56,539 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 3522 Invalid, 5970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 5591 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-04-06 08:34:56,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-04-06 08:34:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 806. [2022-04-06 08:34:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 634 states have (on average 1.3075709779179812) internal successors, (829), 648 states have internal predecessors, (829), 96 states have call successors, (96), 53 states have call predecessors, (96), 75 states have return successors, (147), 111 states have call predecessors, (147), 91 states have call successors, (147) [2022-04-06 08:34:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1072 transitions. [2022-04-06 08:34:56,549 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1072 transitions. Word has length 66 [2022-04-06 08:34:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:56,549 INFO L478 AbstractCegarLoop]: Abstraction has 806 states and 1072 transitions. [2022-04-06 08:34:56,549 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) [2022-04-06 08:34:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1072 transitions. [2022-04-06 08:34:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 08:34:56,550 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:56,550 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:56,550 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-04-06 08:34:56,550 INFO L403 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:56,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:56,551 INFO L85 PathProgramCache]: Analyzing trace with hash 136312337, now seen corresponding path program 1 times [2022-04-06 08:34:56,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:56,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109152854] [2022-04-06 08:34:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:56,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:56,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:56,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:34:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:56,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 08:34:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:34:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:56,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:56,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:56,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109152854] [2022-04-06 08:34:56,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109152854] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:56,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:56,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 08:34:56,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653099625] [2022-04-06 08:34:56,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:56,809 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 08:34:56,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 08:34:56,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 08:34:56,809 INFO L87 Difference]: Start difference. First operand 806 states and 1072 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) [2022-04-06 08:34:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:34:59,527 INFO L93 Difference]: Finished difference Result 962 states and 1332 transitions. [2022-04-06 08:34:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 08:34:59,528 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 [2022-04-06 08:34:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:34:59,530 INFO L225 Difference]: With dead ends: 962 [2022-04-06 08:34:59,530 INFO L226 Difference]: Without dead ends: 941 [2022-04-06 08:34:59,531 INFO L912 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 [2022-04-06 08:34:59,531 INFO L913 BasicCegarLoop]: 561 mSDtfsCounter, 887 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 6504 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 6861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 6504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:34:59,538 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 3290 Invalid, 6861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 6504 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-04-06 08:34:59,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-04-06 08:34:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 804. [2022-04-06 08:34:59,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 633 states have (on average 1.306477093206951) internal successors, (827), 647 states have internal predecessors, (827), 95 states have call successors, (95), 53 states have call predecessors, (95), 75 states have return successors, (146), 110 states have call predecessors, (146), 90 states have call successors, (146) [2022-04-06 08:34:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1068 transitions. [2022-04-06 08:34:59,546 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1068 transitions. Word has length 63 [2022-04-06 08:34:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:34:59,547 INFO L478 AbstractCegarLoop]: Abstraction has 804 states and 1068 transitions. [2022-04-06 08:34:59,547 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) [2022-04-06 08:34:59,547 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1068 transitions. [2022-04-06 08:34:59,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 08:34:59,548 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:34:59,548 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:34:59,548 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-04-06 08:34:59,548 INFO L403 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:34:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:34:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash 982595257, now seen corresponding path program 1 times [2022-04-06 08:34:59,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:34:59,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432523616] [2022-04-06 08:34:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:34:59,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:34:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:59,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:34:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:59,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:34:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:59,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:34:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:34:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:34:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:59,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:34:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 08:34:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:34:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:34:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:34:59,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432523616] [2022-04-06 08:34:59,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432523616] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:34:59,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:34:59,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 08:34:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482447719] [2022-04-06 08:34:59,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:34:59,672 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 08:34:59,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:34:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 08:34:59,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-06 08:34:59,673 INFO L87 Difference]: Start difference. First operand 804 states and 1068 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) [2022-04-06 08:35:00,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:00,721 INFO L93 Difference]: Finished difference Result 806 states and 1068 transitions. [2022-04-06 08:35:00,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 08:35:00,735 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 [2022-04-06 08:35:00,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:00,737 INFO L225 Difference]: With dead ends: 806 [2022-04-06 08:35:00,737 INFO L226 Difference]: Without dead ends: 802 [2022-04-06 08:35:00,737 INFO L912 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 [2022-04-06 08:35:00,738 INFO L913 BasicCegarLoop]: 519 mSDtfsCounter, 343 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:00,738 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 1014 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 08:35:00,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-04-06 08:35:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 696. [2022-04-06 08:35:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 548 states have (on average 1.2974452554744527) internal successors, (711), 561 states have internal predecessors, (711), 83 states have call successors, (83), 47 states have call predecessors, (83), 64 states have return successors, (105), 94 states have call predecessors, (105), 78 states have call successors, (105) [2022-04-06 08:35:00,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 899 transitions. [2022-04-06 08:35:00,746 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 899 transitions. Word has length 63 [2022-04-06 08:35:00,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:00,746 INFO L478 AbstractCegarLoop]: Abstraction has 696 states and 899 transitions. [2022-04-06 08:35:00,746 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) [2022-04-06 08:35:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 899 transitions. [2022-04-06 08:35:00,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-04-06 08:35:00,747 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:00,747 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:00,748 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-04-06 08:35:00,748 INFO L403 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:00,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash -418163084, now seen corresponding path program 1 times [2022-04-06 08:35:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:00,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954723368] [2022-04-06 08:35:00,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:00,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:00,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:00,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:00,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:01,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:01,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954723368] [2022-04-06 08:35:01,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954723368] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:01,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:01,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 08:35:01,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988819732] [2022-04-06 08:35:01,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:01,039 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 08:35:01,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:01,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 08:35:01,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:35:01,040 INFO L87 Difference]: Start difference. First operand 696 states and 899 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) [2022-04-06 08:35:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:03,287 INFO L93 Difference]: Finished difference Result 781 states and 1027 transitions. [2022-04-06 08:35:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 08:35:03,288 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 [2022-04-06 08:35:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:03,289 INFO L225 Difference]: With dead ends: 781 [2022-04-06 08:35:03,289 INFO L226 Difference]: Without dead ends: 762 [2022-04-06 08:35:03,290 INFO L912 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 [2022-04-06 08:35:03,290 INFO L913 BasicCegarLoop]: 521 mSDtfsCounter, 835 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 5333 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 5649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 5333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:03,290 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 2511 Invalid, 5649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 5333 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-04-06 08:35:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-04-06 08:35:03,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 691. [2022-04-06 08:35:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 545 states have (on average 1.2972477064220183) internal successors, (707), 558 states have internal predecessors, (707), 82 states have call successors, (82), 47 states have call predecessors, (82), 63 states have return successors, (103), 92 states have call predecessors, (103), 77 states have call successors, (103) [2022-04-06 08:35:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 892 transitions. [2022-04-06 08:35:03,296 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 892 transitions. Word has length 63 [2022-04-06 08:35:03,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:03,297 INFO L478 AbstractCegarLoop]: Abstraction has 691 states and 892 transitions. [2022-04-06 08:35:03,297 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) [2022-04-06 08:35:03,297 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 892 transitions. [2022-04-06 08:35:03,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 08:35:03,298 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:03,298 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:03,298 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-04-06 08:35:03,298 INFO L403 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:03,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1864492088, now seen corresponding path program 1 times [2022-04-06 08:35:03,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:03,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434383924] [2022-04-06 08:35:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:03,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:03,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 08:35:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:03,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:03,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434383924] [2022-04-06 08:35:03,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434383924] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:03,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:03,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 08:35:03,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788397954] [2022-04-06 08:35:03,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:03,430 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 08:35:03,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:03,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 08:35:03,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-04-06 08:35:03,432 INFO L87 Difference]: Start difference. First operand 691 states and 892 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) [2022-04-06 08:35:04,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:04,617 INFO L93 Difference]: Finished difference Result 762 states and 1003 transitions. [2022-04-06 08:35:04,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 08:35:04,617 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 [2022-04-06 08:35:04,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:04,619 INFO L225 Difference]: With dead ends: 762 [2022-04-06 08:35:04,619 INFO L226 Difference]: Without dead ends: 762 [2022-04-06 08:35:04,619 INFO L912 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 [2022-04-06 08:35:04,619 INFO L913 BasicCegarLoop]: 479 mSDtfsCounter, 408 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:04,619 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1009 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 08:35:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-04-06 08:35:04,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 691. [2022-04-06 08:35:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 545 states have (on average 1.2935779816513762) internal successors, (705), 558 states have internal predecessors, (705), 82 states have call successors, (82), 47 states have call predecessors, (82), 63 states have return successors, (103), 92 states have call predecessors, (103), 77 states have call successors, (103) [2022-04-06 08:35:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 890 transitions. [2022-04-06 08:35:04,626 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 890 transitions. Word has length 66 [2022-04-06 08:35:04,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:04,626 INFO L478 AbstractCegarLoop]: Abstraction has 691 states and 890 transitions. [2022-04-06 08:35:04,626 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) [2022-04-06 08:35:04,626 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 890 transitions. [2022-04-06 08:35:04,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-04-06 08:35:04,627 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:04,627 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:04,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-04-06 08:35:04,627 INFO L403 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash 531525074, now seen corresponding path program 1 times [2022-04-06 08:35:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:04,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143950174] [2022-04-06 08:35:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:04,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:04,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:04,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:04,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:04,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:04,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:04,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:04,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143950174] [2022-04-06 08:35:04,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143950174] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:04,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:04,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:04,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401754524] [2022-04-06 08:35:04,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:04,814 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:04,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:04,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:04,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:04,814 INFO L87 Difference]: Start difference. First operand 691 states and 890 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) [2022-04-06 08:35:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:06,243 INFO L93 Difference]: Finished difference Result 793 states and 1044 transitions. [2022-04-06 08:35:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 08:35:06,243 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 [2022-04-06 08:35:06,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:06,245 INFO L225 Difference]: With dead ends: 793 [2022-04-06 08:35:06,245 INFO L226 Difference]: Without dead ends: 793 [2022-04-06 08:35:06,245 INFO L912 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 [2022-04-06 08:35:06,246 INFO L913 BasicCegarLoop]: 500 mSDtfsCounter, 1308 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 2286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:06,246 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 1481 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 08:35:06,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-04-06 08:35:06,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 697. [2022-04-06 08:35:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 550 states have (on average 1.2927272727272727) internal successors, (711), 563 states have internal predecessors, (711), 83 states have call successors, (83), 47 states have call predecessors, (83), 63 states have return successors, (104), 93 states have call predecessors, (104), 78 states have call successors, (104) [2022-04-06 08:35:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 898 transitions. [2022-04-06 08:35:06,252 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 898 transitions. Word has length 65 [2022-04-06 08:35:06,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:06,252 INFO L478 AbstractCegarLoop]: Abstraction has 697 states and 898 transitions. [2022-04-06 08:35:06,253 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) [2022-04-06 08:35:06,253 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 898 transitions. [2022-04-06 08:35:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-04-06 08:35:06,254 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:06,254 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:06,254 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-04-06 08:35:06,254 INFO L403 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:06,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1966008401, now seen corresponding path program 1 times [2022-04-06 08:35:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:06,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567521974] [2022-04-06 08:35:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:06,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:06,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:06,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 08:35:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:06,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 08:35:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:06,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:06,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567521974] [2022-04-06 08:35:06,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567521974] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:06,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:06,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-04-06 08:35:06,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761617461] [2022-04-06 08:35:06,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:06,564 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 08:35:06,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:06,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 08:35:06,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-04-06 08:35:06,565 INFO L87 Difference]: Start difference. First operand 697 states and 898 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) [2022-04-06 08:35:09,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:09,140 INFO L93 Difference]: Finished difference Result 791 states and 1036 transitions. [2022-04-06 08:35:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-06 08:35:09,140 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 [2022-04-06 08:35:09,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:09,142 INFO L225 Difference]: With dead ends: 791 [2022-04-06 08:35:09,142 INFO L226 Difference]: Without dead ends: 767 [2022-04-06 08:35:09,142 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-04-06 08:35:09,143 INFO L913 BasicCegarLoop]: 516 mSDtfsCounter, 1156 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 5998 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 6439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 5998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:09,143 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 3171 Invalid, 6439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 5998 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-04-06 08:35:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-04-06 08:35:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 694. [2022-04-06 08:35:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 548 states have (on average 1.2919708029197081) internal successors, (708), 561 states have internal predecessors, (708), 82 states have call successors, (82), 47 states have call predecessors, (82), 63 states have return successors, (103), 92 states have call predecessors, (103), 77 states have call successors, (103) [2022-04-06 08:35:09,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 893 transitions. [2022-04-06 08:35:09,152 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 893 transitions. Word has length 70 [2022-04-06 08:35:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:09,152 INFO L478 AbstractCegarLoop]: Abstraction has 694 states and 893 transitions. [2022-04-06 08:35:09,152 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) [2022-04-06 08:35:09,152 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 893 transitions. [2022-04-06 08:35:09,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 08:35:09,153 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:09,154 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:09,154 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-04-06 08:35:09,154 INFO L403 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:09,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1992943065, now seen corresponding path program 1 times [2022-04-06 08:35:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:09,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124564508] [2022-04-06 08:35:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:09,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:09,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:09,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:09,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:09,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:09,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124564508] [2022-04-06 08:35:09,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124564508] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:09,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:09,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 08:35:09,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66844423] [2022-04-06 08:35:09,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:09,456 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 08:35:09,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:09,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 08:35:09,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 08:35:09,457 INFO L87 Difference]: Start difference. First operand 694 states and 893 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) [2022-04-06 08:35:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:11,543 INFO L93 Difference]: Finished difference Result 784 states and 1026 transitions. [2022-04-06 08:35:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 08:35:11,544 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 [2022-04-06 08:35:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:11,545 INFO L225 Difference]: With dead ends: 784 [2022-04-06 08:35:11,545 INFO L226 Difference]: Without dead ends: 762 [2022-04-06 08:35:11,545 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-04-06 08:35:11,546 INFO L913 BasicCegarLoop]: 509 mSDtfsCounter, 627 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 4893 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 5115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 4893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:11,546 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2676 Invalid, 5115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 4893 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 08:35:11,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-04-06 08:35:11,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 692. [2022-04-06 08:35:11,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.2906764168190128) internal successors, (706), 560 states have internal predecessors, (706), 81 states have call successors, (81), 47 states have call predecessors, (81), 63 states have return successors, (102), 91 states have call predecessors, (102), 76 states have call successors, (102) [2022-04-06 08:35:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 889 transitions. [2022-04-06 08:35:11,552 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 889 transitions. Word has length 67 [2022-04-06 08:35:11,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:11,552 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 889 transitions. [2022-04-06 08:35:11,552 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) [2022-04-06 08:35:11,552 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 889 transitions. [2022-04-06 08:35:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 08:35:11,553 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:11,553 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:11,553 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-04-06 08:35:11,554 INFO L403 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:11,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:11,554 INFO L85 PathProgramCache]: Analyzing trace with hash -925827221, now seen corresponding path program 1 times [2022-04-06 08:35:11,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:11,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051664253] [2022-04-06 08:35:11,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:11,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:11,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:11,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:11,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 08:35:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:11,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:11,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:11,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051664253] [2022-04-06 08:35:11,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051664253] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:11,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:11,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:11,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742039732] [2022-04-06 08:35:11,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:11,816 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:11,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:11,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:11,817 INFO L87 Difference]: Start difference. First operand 692 states and 889 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) [2022-04-06 08:35:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:13,086 INFO L93 Difference]: Finished difference Result 764 states and 999 transitions. [2022-04-06 08:35:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 08:35:13,087 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 [2022-04-06 08:35:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:13,089 INFO L225 Difference]: With dead ends: 764 [2022-04-06 08:35:13,089 INFO L226 Difference]: Without dead ends: 764 [2022-04-06 08:35:13,089 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2022-04-06 08:35:13,090 INFO L913 BasicCegarLoop]: 497 mSDtfsCounter, 606 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:13,090 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1177 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1622 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 08:35:13,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-04-06 08:35:13,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 692. [2022-04-06 08:35:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 547 states have (on average 1.287020109689214) internal successors, (704), 560 states have internal predecessors, (704), 81 states have call successors, (81), 47 states have call predecessors, (81), 63 states have return successors, (102), 91 states have call predecessors, (102), 76 states have call successors, (102) [2022-04-06 08:35:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 887 transitions. [2022-04-06 08:35:13,098 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 887 transitions. Word has length 66 [2022-04-06 08:35:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:13,098 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 887 transitions. [2022-04-06 08:35:13,098 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) [2022-04-06 08:35:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 887 transitions. [2022-04-06 08:35:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-04-06 08:35:13,100 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:13,100 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:13,100 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-04-06 08:35:13,100 INFO L403 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:13,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash -575027284, now seen corresponding path program 1 times [2022-04-06 08:35:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:13,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455124944] [2022-04-06 08:35:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:13,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:13,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 08:35:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:13,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:13,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455124944] [2022-04-06 08:35:13,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455124944] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:13,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:13,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 08:35:13,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599369883] [2022-04-06 08:35:13,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:13,338 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 08:35:13,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:13,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 08:35:13,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-04-06 08:35:13,339 INFO L87 Difference]: Start difference. First operand 692 states and 887 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) [2022-04-06 08:35:15,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:15,293 INFO L93 Difference]: Finished difference Result 786 states and 1024 transitions. [2022-04-06 08:35:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 08:35:15,294 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 [2022-04-06 08:35:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:15,296 INFO L225 Difference]: With dead ends: 786 [2022-04-06 08:35:15,296 INFO L226 Difference]: Without dead ends: 712 [2022-04-06 08:35:15,296 INFO L912 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 [2022-04-06 08:35:15,296 INFO L913 BasicCegarLoop]: 500 mSDtfsCounter, 381 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 3737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:15,296 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1867 Invalid, 3737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 08:35:15,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-04-06 08:35:15,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 655. [2022-04-06 08:35:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 517 states have (on average 1.2727272727272727) internal successors, (658), 530 states have internal predecessors, (658), 74 states have call successors, (74), 47 states have call predecessors, (74), 63 states have return successors, (94), 84 states have call predecessors, (94), 69 states have call successors, (94) [2022-04-06 08:35:15,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 826 transitions. [2022-04-06 08:35:15,310 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 826 transitions. Word has length 66 [2022-04-06 08:35:15,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:15,311 INFO L478 AbstractCegarLoop]: Abstraction has 655 states and 826 transitions. [2022-04-06 08:35:15,311 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) [2022-04-06 08:35:15,311 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 826 transitions. [2022-04-06 08:35:15,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 08:35:15,312 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:15,312 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:15,312 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-04-06 08:35:15,312 INFO L403 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:15,313 INFO L85 PathProgramCache]: Analyzing trace with hash -329926322, now seen corresponding path program 1 times [2022-04-06 08:35:15,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:15,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972067684] [2022-04-06 08:35:15,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:15,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:15,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:15,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:15,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-04-06 08:35:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:15,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:15,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972067684] [2022-04-06 08:35:15,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972067684] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:15,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:15,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:15,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545483662] [2022-04-06 08:35:15,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:15,479 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:15,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:15,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:15,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:15,479 INFO L87 Difference]: Start difference. First operand 655 states and 826 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) [2022-04-06 08:35:16,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:16,617 INFO L93 Difference]: Finished difference Result 706 states and 905 transitions. [2022-04-06 08:35:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:16,618 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 [2022-04-06 08:35:16,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:16,623 INFO L225 Difference]: With dead ends: 706 [2022-04-06 08:35:16,623 INFO L226 Difference]: Without dead ends: 701 [2022-04-06 08:35:16,624 INFO L912 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 [2022-04-06 08:35:16,624 INFO L913 BasicCegarLoop]: 444 mSDtfsCounter, 1216 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:16,624 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 1062 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 08:35:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-04-06 08:35:16,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 650. [2022-04-06 08:35:16,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 513 states have (on average 1.2729044834307992) internal successors, (653), 526 states have internal predecessors, (653), 73 states have call successors, (73), 47 states have call predecessors, (73), 63 states have return successors, (93), 83 states have call predecessors, (93), 68 states have call successors, (93) [2022-04-06 08:35:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 819 transitions. [2022-04-06 08:35:16,633 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 819 transitions. Word has length 67 [2022-04-06 08:35:16,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:16,633 INFO L478 AbstractCegarLoop]: Abstraction has 650 states and 819 transitions. [2022-04-06 08:35:16,633 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) [2022-04-06 08:35:16,633 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 819 transitions. [2022-04-06 08:35:16,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-04-06 08:35:16,634 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:16,634 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:16,635 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-04-06 08:35:16,635 INFO L403 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:16,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:16,635 INFO L85 PathProgramCache]: Analyzing trace with hash 872575031, now seen corresponding path program 1 times [2022-04-06 08:35:16,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:16,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265982194] [2022-04-06 08:35:16,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:16,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:16,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:16,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:16,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:16,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:16,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:16,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:16,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265982194] [2022-04-06 08:35:16,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265982194] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:16,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:16,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 08:35:16,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084551595] [2022-04-06 08:35:16,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:16,794 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 08:35:16,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:16,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 08:35:16,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-04-06 08:35:16,795 INFO L87 Difference]: Start difference. First operand 650 states and 819 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) [2022-04-06 08:35:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:17,950 INFO L93 Difference]: Finished difference Result 817 states and 1044 transitions. [2022-04-06 08:35:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 08:35:17,950 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 [2022-04-06 08:35:17,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:17,952 INFO L225 Difference]: With dead ends: 817 [2022-04-06 08:35:17,952 INFO L226 Difference]: Without dead ends: 817 [2022-04-06 08:35:17,952 INFO L912 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 [2022-04-06 08:35:17,952 INFO L913 BasicCegarLoop]: 463 mSDtfsCounter, 1407 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:17,952 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 906 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 08:35:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-04-06 08:35:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 692. [2022-04-06 08:35:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 545 states have (on average 1.2660550458715596) internal successors, (690), 560 states have internal predecessors, (690), 75 states have call successors, (75), 49 states have call predecessors, (75), 71 states have return successors, (101), 91 states have call predecessors, (101), 70 states have call successors, (101) [2022-04-06 08:35:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 866 transitions. [2022-04-06 08:35:17,959 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 866 transitions. Word has length 67 [2022-04-06 08:35:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:17,959 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 866 transitions. [2022-04-06 08:35:17,959 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) [2022-04-06 08:35:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 866 transitions. [2022-04-06 08:35:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-04-06 08:35:17,960 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:17,960 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:17,960 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-04-06 08:35:17,960 INFO L403 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:17,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1310592370, now seen corresponding path program 1 times [2022-04-06 08:35:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:17,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490972674] [2022-04-06 08:35:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:18,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:18,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:18,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:18,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490972674] [2022-04-06 08:35:18,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490972674] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:18,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:18,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894646373] [2022-04-06 08:35:18,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:18,112 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:18,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:18,112 INFO L87 Difference]: Start difference. First operand 692 states and 866 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) [2022-04-06 08:35:19,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:19,492 INFO L93 Difference]: Finished difference Result 815 states and 1041 transitions. [2022-04-06 08:35:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 08:35:19,492 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 [2022-04-06 08:35:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:19,494 INFO L225 Difference]: With dead ends: 815 [2022-04-06 08:35:19,494 INFO L226 Difference]: Without dead ends: 815 [2022-04-06 08:35:19,494 INFO L912 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 [2022-04-06 08:35:19,494 INFO L913 BasicCegarLoop]: 465 mSDtfsCounter, 1479 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:19,495 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 983 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-04-06 08:35:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-04-06 08:35:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 692. [2022-04-06 08:35:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 545 states have (on average 1.2642201834862385) internal successors, (689), 560 states have internal predecessors, (689), 75 states have call successors, (75), 49 states have call predecessors, (75), 71 states have return successors, (101), 91 states have call predecessors, (101), 70 states have call successors, (101) [2022-04-06 08:35:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 865 transitions. [2022-04-06 08:35:19,501 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 865 transitions. Word has length 68 [2022-04-06 08:35:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:19,501 INFO L478 AbstractCegarLoop]: Abstraction has 692 states and 865 transitions. [2022-04-06 08:35:19,501 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) [2022-04-06 08:35:19,502 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 865 transitions. [2022-04-06 08:35:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 08:35:19,502 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:19,503 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:19,503 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-04-06 08:35:19,503 INFO L403 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash -771243238, now seen corresponding path program 1 times [2022-04-06 08:35:19,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:19,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181132594] [2022-04-06 08:35:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:19,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:19,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:19,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 08:35:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:19,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:19,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:19,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181132594] [2022-04-06 08:35:19,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181132594] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:19,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:19,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 08:35:19,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255950461] [2022-04-06 08:35:19,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:19,795 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 08:35:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:19,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 08:35:19,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:35:19,795 INFO L87 Difference]: Start difference. First operand 692 states and 865 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) [2022-04-06 08:35:21,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:21,914 INFO L93 Difference]: Finished difference Result 760 states and 963 transitions. [2022-04-06 08:35:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 08:35:21,914 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 [2022-04-06 08:35:21,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:21,916 INFO L225 Difference]: With dead ends: 760 [2022-04-06 08:35:21,916 INFO L226 Difference]: Without dead ends: 741 [2022-04-06 08:35:21,916 INFO L912 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 [2022-04-06 08:35:21,916 INFO L913 BasicCegarLoop]: 449 mSDtfsCounter, 239 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 4892 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 4985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 4892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:21,916 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 2419 Invalid, 4985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 4892 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-04-06 08:35:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-04-06 08:35:21,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 690. [2022-04-06 08:35:21,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 544 states have (on average 1.2628676470588236) internal successors, (687), 559 states have internal predecessors, (687), 74 states have call successors, (74), 49 states have call predecessors, (74), 71 states have return successors, (100), 90 states have call predecessors, (100), 69 states have call successors, (100) [2022-04-06 08:35:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 861 transitions. [2022-04-06 08:35:21,923 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 861 transitions. Word has length 72 [2022-04-06 08:35:21,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:21,923 INFO L478 AbstractCegarLoop]: Abstraction has 690 states and 861 transitions. [2022-04-06 08:35:21,923 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) [2022-04-06 08:35:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 861 transitions. [2022-04-06 08:35:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 08:35:21,924 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:21,924 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:21,924 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-04-06 08:35:21,924 INFO L403 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash 667549759, now seen corresponding path program 1 times [2022-04-06 08:35:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:21,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058053317] [2022-04-06 08:35:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:21,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:22,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:22,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:22,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 08:35:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:22,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:22,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058053317] [2022-04-06 08:35:22,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058053317] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:22,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:22,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 08:35:22,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501033328] [2022-04-06 08:35:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:22,359 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 08:35:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 08:35:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:35:22,360 INFO L87 Difference]: Start difference. First operand 690 states and 861 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) [2022-04-06 08:35:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:24,259 INFO L93 Difference]: Finished difference Result 755 states and 956 transitions. [2022-04-06 08:35:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 08:35:24,259 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 [2022-04-06 08:35:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:24,261 INFO L225 Difference]: With dead ends: 755 [2022-04-06 08:35:24,261 INFO L226 Difference]: Without dead ends: 727 [2022-04-06 08:35:24,261 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-04-06 08:35:24,261 INFO L913 BasicCegarLoop]: 442 mSDtfsCounter, 465 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 4238 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 4416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 4238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:24,261 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 2229 Invalid, 4416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 4238 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-04-06 08:35:24,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-04-06 08:35:24,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 678. [2022-04-06 08:35:24,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 535 states have (on average 1.263551401869159) internal successors, (676), 550 states have internal predecessors, (676), 72 states have call successors, (72), 49 states have call predecessors, (72), 70 states have return successors, (97), 87 states have call predecessors, (97), 67 states have call successors, (97) [2022-04-06 08:35:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 845 transitions. [2022-04-06 08:35:24,267 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 845 transitions. Word has length 69 [2022-04-06 08:35:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:24,267 INFO L478 AbstractCegarLoop]: Abstraction has 678 states and 845 transitions. [2022-04-06 08:35:24,267 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) [2022-04-06 08:35:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 845 transitions. [2022-04-06 08:35:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 08:35:24,268 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:24,268 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:24,268 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-04-06 08:35:24,269 INFO L403 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:24,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:24,269 INFO L85 PathProgramCache]: Analyzing trace with hash -914202014, now seen corresponding path program 1 times [2022-04-06 08:35:24,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:24,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354064939] [2022-04-06 08:35:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:24,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:24,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:24,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 08:35:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:24,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:35:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:24,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:24,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:24,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354064939] [2022-04-06 08:35:24,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354064939] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:24,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:24,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:24,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240411734] [2022-04-06 08:35:24,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:24,425 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:24,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:24,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:24,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:24,426 INFO L87 Difference]: Start difference. First operand 678 states and 845 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) [2022-04-06 08:35:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:25,441 INFO L93 Difference]: Finished difference Result 727 states and 920 transitions. [2022-04-06 08:35:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:25,441 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 [2022-04-06 08:35:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:25,443 INFO L225 Difference]: With dead ends: 727 [2022-04-06 08:35:25,443 INFO L226 Difference]: Without dead ends: 722 [2022-04-06 08:35:25,443 INFO L912 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 [2022-04-06 08:35:25,443 INFO L913 BasicCegarLoop]: 422 mSDtfsCounter, 708 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:25,443 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 1134 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 08:35:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-04-06 08:35:25,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 673. [2022-04-06 08:35:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 531 states have (on average 1.2636534839924671) internal successors, (671), 546 states have internal predecessors, (671), 71 states have call successors, (71), 49 states have call predecessors, (71), 70 states have return successors, (96), 86 states have call predecessors, (96), 66 states have call successors, (96) [2022-04-06 08:35:25,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 838 transitions. [2022-04-06 08:35:25,449 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 838 transitions. Word has length 69 [2022-04-06 08:35:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:25,449 INFO L478 AbstractCegarLoop]: Abstraction has 673 states and 838 transitions. [2022-04-06 08:35:25,449 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) [2022-04-06 08:35:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 838 transitions. [2022-04-06 08:35:25,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 08:35:25,450 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:25,450 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:25,450 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-04-06 08:35:25,450 INFO L403 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:25,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash -761466943, now seen corresponding path program 1 times [2022-04-06 08:35:25,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:25,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950320552] [2022-04-06 08:35:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:25,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:25,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:25,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:25,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:25,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-04-06 08:35:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:35:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:25,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:25,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950320552] [2022-04-06 08:35:25,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950320552] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:25,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:25,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 08:35:25,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716736553] [2022-04-06 08:35:25,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:25,665 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 08:35:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:25,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 08:35:25,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-06 08:35:25,665 INFO L87 Difference]: Start difference. First operand 673 states and 838 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) [2022-04-06 08:35:27,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:27,303 INFO L93 Difference]: Finished difference Result 746 states and 941 transitions. [2022-04-06 08:35:27,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 08:35:27,304 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 [2022-04-06 08:35:27,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:27,305 INFO L225 Difference]: With dead ends: 746 [2022-04-06 08:35:27,305 INFO L226 Difference]: Without dead ends: 719 [2022-04-06 08:35:27,306 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-04-06 08:35:27,306 INFO L913 BasicCegarLoop]: 436 mSDtfsCounter, 261 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 3645 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 3734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:27,306 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 2276 Invalid, 3734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3645 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 08:35:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-04-06 08:35:27,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 670. [2022-04-06 08:35:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 529 states have (on average 1.2627599243856333) internal successors, (668), 544 states have internal predecessors, (668), 70 states have call successors, (70), 49 states have call predecessors, (70), 70 states have return successors, (95), 85 states have call predecessors, (95), 65 states have call successors, (95) [2022-04-06 08:35:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 833 transitions. [2022-04-06 08:35:27,313 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 833 transitions. Word has length 69 [2022-04-06 08:35:27,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:27,313 INFO L478 AbstractCegarLoop]: Abstraction has 670 states and 833 transitions. [2022-04-06 08:35:27,313 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) [2022-04-06 08:35:27,313 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 833 transitions. [2022-04-06 08:35:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 08:35:27,314 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:27,314 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:27,314 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-04-06 08:35:27,314 INFO L403 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:27,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:27,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1045116325, now seen corresponding path program 1 times [2022-04-06 08:35:27,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:27,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892950112] [2022-04-06 08:35:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:27,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:27,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:27,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:27,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:27,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:27,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:27,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:27,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892950112] [2022-04-06 08:35:27,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892950112] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:27,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:27,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:27,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766248052] [2022-04-06 08:35:27,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:27,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:27,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:27,501 INFO L87 Difference]: Start difference. First operand 670 states and 833 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) [2022-04-06 08:35:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:28,977 INFO L93 Difference]: Finished difference Result 791 states and 1003 transitions. [2022-04-06 08:35:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 08:35:28,978 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 [2022-04-06 08:35:28,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:28,979 INFO L225 Difference]: With dead ends: 791 [2022-04-06 08:35:28,979 INFO L226 Difference]: Without dead ends: 791 [2022-04-06 08:35:28,979 INFO L912 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 [2022-04-06 08:35:28,980 INFO L913 BasicCegarLoop]: 434 mSDtfsCounter, 1411 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:28,980 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1418 Valid, 867 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 08:35:28,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2022-04-06 08:35:28,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 668. [2022-04-06 08:35:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 527 states have (on average 1.2618595825426946) internal successors, (665), 542 states have internal predecessors, (665), 70 states have call successors, (70), 49 states have call predecessors, (70), 70 states have return successors, (95), 85 states have call predecessors, (95), 65 states have call successors, (95) [2022-04-06 08:35:28,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 830 transitions. [2022-04-06 08:35:28,986 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 830 transitions. Word has length 69 [2022-04-06 08:35:28,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:28,986 INFO L478 AbstractCegarLoop]: Abstraction has 668 states and 830 transitions. [2022-04-06 08:35:28,986 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) [2022-04-06 08:35:28,986 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 830 transitions. [2022-04-06 08:35:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-06 08:35:28,987 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:28,987 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:28,987 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-04-06 08:35:28,987 INFO L403 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:28,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:28,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1045148069, now seen corresponding path program 1 times [2022-04-06 08:35:28,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:28,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549325804] [2022-04-06 08:35:28,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:28,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:29,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:29,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:29,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:29,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:29,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549325804] [2022-04-06 08:35:29,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549325804] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:29,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:29,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 08:35:29,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954233965] [2022-04-06 08:35:29,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:29,203 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 08:35:29,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:29,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 08:35:29,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-06 08:35:29,204 INFO L87 Difference]: Start difference. First operand 668 states and 830 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) [2022-04-06 08:35:30,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:30,643 INFO L93 Difference]: Finished difference Result 724 states and 912 transitions. [2022-04-06 08:35:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-06 08:35:30,643 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 [2022-04-06 08:35:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:30,644 INFO L225 Difference]: With dead ends: 724 [2022-04-06 08:35:30,644 INFO L226 Difference]: Without dead ends: 665 [2022-04-06 08:35:30,645 INFO L912 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 [2022-04-06 08:35:30,645 INFO L913 BasicCegarLoop]: 375 mSDtfsCounter, 796 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 3570 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 3846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 3570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:30,645 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 1629 Invalid, 3846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 3570 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 08:35:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-04-06 08:35:30,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 612. [2022-04-06 08:35:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 481 states have (on average 1.2536382536382535) internal successors, (603), 494 states have internal predecessors, (603), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-04-06 08:35:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 758 transitions. [2022-04-06 08:35:30,650 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 758 transitions. Word has length 69 [2022-04-06 08:35:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:30,650 INFO L478 AbstractCegarLoop]: Abstraction has 612 states and 758 transitions. [2022-04-06 08:35:30,650 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) [2022-04-06 08:35:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 758 transitions. [2022-04-06 08:35:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 08:35:30,651 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:30,651 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:30,652 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-04-06 08:35:30,652 INFO L403 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:30,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1513722750, now seen corresponding path program 1 times [2022-04-06 08:35:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:30,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963222973] [2022-04-06 08:35:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:30,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:30,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:30,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:30,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:30,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 08:35:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:30,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:30,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:30,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963222973] [2022-04-06 08:35:30,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963222973] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:30,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:30,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 08:35:30,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312004159] [2022-04-06 08:35:30,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:30,941 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 08:35:30,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:30,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 08:35:30,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 08:35:30,941 INFO L87 Difference]: Start difference. First operand 612 states and 758 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) [2022-04-06 08:35:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:32,679 INFO L93 Difference]: Finished difference Result 698 states and 882 transitions. [2022-04-06 08:35:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 08:35:32,680 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 [2022-04-06 08:35:32,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:32,696 INFO L225 Difference]: With dead ends: 698 [2022-04-06 08:35:32,696 INFO L226 Difference]: Without dead ends: 670 [2022-04-06 08:35:32,696 INFO L912 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 [2022-04-06 08:35:32,697 INFO L913 BasicCegarLoop]: 432 mSDtfsCounter, 704 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 4178 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 4448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 4178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:32,697 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 2541 Invalid, 4448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 4178 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-04-06 08:35:32,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-04-06 08:35:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 614. [2022-04-06 08:35:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 483 states have (on average 1.2463768115942029) internal successors, (602), 496 states have internal predecessors, (602), 68 states have call successors, (68), 47 states have call predecessors, (68), 62 states have return successors, (87), 77 states have call predecessors, (87), 63 states have call successors, (87) [2022-04-06 08:35:32,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 757 transitions. [2022-04-06 08:35:32,703 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 757 transitions. Word has length 71 [2022-04-06 08:35:32,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:32,703 INFO L478 AbstractCegarLoop]: Abstraction has 614 states and 757 transitions. [2022-04-06 08:35:32,703 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) [2022-04-06 08:35:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 757 transitions. [2022-04-06 08:35:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 08:35:32,704 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:32,704 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:32,704 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-04-06 08:35:32,704 INFO L403 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 488230751, now seen corresponding path program 1 times [2022-04-06 08:35:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:32,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797445953] [2022-04-06 08:35:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:32,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:32,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:32,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 08:35:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:32,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:32,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:32,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:32,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797445953] [2022-04-06 08:35:32,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797445953] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:32,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:32,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 08:35:32,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016681459] [2022-04-06 08:35:32,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:32,894 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 08:35:32,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:32,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 08:35:32,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:35:32,895 INFO L87 Difference]: Start difference. First operand 614 states and 757 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) [2022-04-06 08:35:33,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:33,744 INFO L93 Difference]: Finished difference Result 665 states and 834 transitions. [2022-04-06 08:35:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:33,744 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 [2022-04-06 08:35:33,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:33,746 INFO L225 Difference]: With dead ends: 665 [2022-04-06 08:35:33,746 INFO L226 Difference]: Without dead ends: 658 [2022-04-06 08:35:33,746 INFO L912 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 [2022-04-06 08:35:33,746 INFO L913 BasicCegarLoop]: 417 mSDtfsCounter, 671 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:33,746 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 1152 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 08:35:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-04-06 08:35:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 607. [2022-04-06 08:35:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 477 states have (on average 1.2473794549266248) internal successors, (595), 490 states have internal predecessors, (595), 67 states have call successors, (67), 47 states have call predecessors, (67), 62 states have return successors, (85), 76 states have call predecessors, (85), 62 states have call successors, (85) [2022-04-06 08:35:33,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 747 transitions. [2022-04-06 08:35:33,752 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 747 transitions. Word has length 71 [2022-04-06 08:35:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:33,752 INFO L478 AbstractCegarLoop]: Abstraction has 607 states and 747 transitions. [2022-04-06 08:35:33,752 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) [2022-04-06 08:35:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 747 transitions. [2022-04-06 08:35:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-04-06 08:35:33,753 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:33,753 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:33,754 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-04-06 08:35:33,754 INFO L403 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:33,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:33,754 INFO L85 PathProgramCache]: Analyzing trace with hash -756614912, now seen corresponding path program 1 times [2022-04-06 08:35:33,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:33,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978687205] [2022-04-06 08:35:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:33,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:33,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:33,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-04-06 08:35:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:33,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:33,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:33,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978687205] [2022-04-06 08:35:33,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978687205] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:33,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:33,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 08:35:33,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765862616] [2022-04-06 08:35:33,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:33,926 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 08:35:33,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:33,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 08:35:33,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:35:33,927 INFO L87 Difference]: Start difference. First operand 607 states and 747 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) [2022-04-06 08:35:34,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:34,942 INFO L93 Difference]: Finished difference Result 658 states and 824 transitions. [2022-04-06 08:35:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:34,943 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 [2022-04-06 08:35:34,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:34,944 INFO L225 Difference]: With dead ends: 658 [2022-04-06 08:35:34,944 INFO L226 Difference]: Without dead ends: 652 [2022-04-06 08:35:34,944 INFO L912 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 [2022-04-06 08:35:34,944 INFO L913 BasicCegarLoop]: 409 mSDtfsCounter, 431 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:34,944 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 1339 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 08:35:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-04-06 08:35:34,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 601. [2022-04-06 08:35:34,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 472 states have (on average 1.2478813559322033) internal successors, (589), 485 states have internal predecessors, (589), 66 states have call successors, (66), 47 states have call predecessors, (66), 62 states have return successors, (84), 75 states have call predecessors, (84), 61 states have call successors, (84) [2022-04-06 08:35:34,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 739 transitions. [2022-04-06 08:35:34,950 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 739 transitions. Word has length 71 [2022-04-06 08:35:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:34,950 INFO L478 AbstractCegarLoop]: Abstraction has 601 states and 739 transitions. [2022-04-06 08:35:34,950 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) [2022-04-06 08:35:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 739 transitions. [2022-04-06 08:35:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 08:35:34,951 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:34,951 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:34,952 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-04-06 08:35:34,952 INFO L403 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1880837203, now seen corresponding path program 1 times [2022-04-06 08:35:34,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:34,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160752459] [2022-04-06 08:35:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:34,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:35,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:35,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:35,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 08:35:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:35:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:35,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:35,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160752459] [2022-04-06 08:35:35,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160752459] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:35,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:35,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 08:35:35,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046836922] [2022-04-06 08:35:35,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:35,254 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 08:35:35,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:35,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 08:35:35,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 08:35:35,254 INFO L87 Difference]: Start difference. First operand 601 states and 739 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) [2022-04-06 08:35:36,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:36,864 INFO L93 Difference]: Finished difference Result 676 states and 844 transitions. [2022-04-06 08:35:36,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 08:35:36,864 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 [2022-04-06 08:35:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:36,865 INFO L225 Difference]: With dead ends: 676 [2022-04-06 08:35:36,865 INFO L226 Difference]: Without dead ends: 654 [2022-04-06 08:35:36,865 INFO L912 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 [2022-04-06 08:35:36,865 INFO L913 BasicCegarLoop]: 406 mSDtfsCounter, 855 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 3564 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 3894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 3564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:36,866 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 2115 Invalid, 3894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 3564 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-04-06 08:35:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-04-06 08:35:36,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 599. [2022-04-06 08:35:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 471 states have (on average 1.246284501061571) internal successors, (587), 484 states have internal predecessors, (587), 65 states have call successors, (65), 47 states have call predecessors, (65), 62 states have return successors, (83), 74 states have call predecessors, (83), 60 states have call successors, (83) [2022-04-06 08:35:36,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 735 transitions. [2022-04-06 08:35:36,871 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 735 transitions. Word has length 74 [2022-04-06 08:35:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:36,873 INFO L478 AbstractCegarLoop]: Abstraction has 599 states and 735 transitions. [2022-04-06 08:35:36,873 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) [2022-04-06 08:35:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 735 transitions. [2022-04-06 08:35:36,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 08:35:36,874 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:36,874 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:36,874 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-04-06 08:35:36,874 INFO L403 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:36,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:36,875 INFO L85 PathProgramCache]: Analyzing trace with hash 355041746, now seen corresponding path program 1 times [2022-04-06 08:35:36,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:36,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596461138] [2022-04-06 08:35:36,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:36,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:36,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:36,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:36,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:36,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:37,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 08:35:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:37,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:37,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:37,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:37,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:37,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596461138] [2022-04-06 08:35:37,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596461138] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:37,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:37,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 08:35:37,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471989403] [2022-04-06 08:35:37,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:37,035 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 08:35:37,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:37,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 08:35:37,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:35:37,036 INFO L87 Difference]: Start difference. First operand 599 states and 735 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) [2022-04-06 08:35:37,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:37,897 INFO L93 Difference]: Finished difference Result 648 states and 807 transitions. [2022-04-06 08:35:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:37,898 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 [2022-04-06 08:35:37,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:37,898 INFO L225 Difference]: With dead ends: 648 [2022-04-06 08:35:37,899 INFO L226 Difference]: Without dead ends: 637 [2022-04-06 08:35:37,899 INFO L912 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 [2022-04-06 08:35:37,899 INFO L913 BasicCegarLoop]: 395 mSDtfsCounter, 415 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:37,899 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 1288 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 08:35:37,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2022-04-06 08:35:37,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 587. [2022-04-06 08:35:37,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 460 states have (on average 1.241304347826087) internal successors, (571), 473 states have internal predecessors, (571), 64 states have call successors, (64), 47 states have call predecessors, (64), 62 states have return successors, (82), 73 states have call predecessors, (82), 59 states have call successors, (82) [2022-04-06 08:35:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 717 transitions. [2022-04-06 08:35:37,904 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 717 transitions. Word has length 73 [2022-04-06 08:35:37,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:37,904 INFO L478 AbstractCegarLoop]: Abstraction has 587 states and 717 transitions. [2022-04-06 08:35:37,904 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) [2022-04-06 08:35:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 717 transitions. [2022-04-06 08:35:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 08:35:37,905 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:37,905 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:37,905 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-04-06 08:35:37,905 INFO L403 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:37,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:37,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1118214243, now seen corresponding path program 1 times [2022-04-06 08:35:37,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:37,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351934860] [2022-04-06 08:35:37,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:37,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:37,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:38,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:38,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:38,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:38,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:38,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 08:35:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:38,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:38,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:38,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351934860] [2022-04-06 08:35:38,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351934860] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:38,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:38,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 08:35:38,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922236875] [2022-04-06 08:35:38,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:38,188 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 08:35:38,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 08:35:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:35:38,189 INFO L87 Difference]: Start difference. First operand 587 states and 717 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) [2022-04-06 08:35:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:41,360 INFO L93 Difference]: Finished difference Result 1242 states and 1546 transitions. [2022-04-06 08:35:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-04-06 08:35:41,360 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 [2022-04-06 08:35:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:41,362 INFO L225 Difference]: With dead ends: 1242 [2022-04-06 08:35:41,362 INFO L226 Difference]: Without dead ends: 1212 [2022-04-06 08:35:41,362 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=614, Invalid=2356, Unknown=0, NotChecked=0, Total=2970 [2022-04-06 08:35:41,362 INFO L913 BasicCegarLoop]: 391 mSDtfsCounter, 2861 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 3982 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 3982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:41,362 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2865 Valid, 1242 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 3982 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-04-06 08:35:41,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-04-06 08:35:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 904. [2022-04-06 08:35:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 713 states have (on average 1.2650771388499298) internal successors, (902), 734 states have internal predecessors, (902), 95 states have call successors, (95), 74 states have call predecessors, (95), 95 states have return successors, (126), 102 states have call predecessors, (126), 90 states have call successors, (126) [2022-04-06 08:35:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1123 transitions. [2022-04-06 08:35:41,371 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1123 transitions. Word has length 73 [2022-04-06 08:35:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:41,371 INFO L478 AbstractCegarLoop]: Abstraction has 904 states and 1123 transitions. [2022-04-06 08:35:41,371 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) [2022-04-06 08:35:41,371 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1123 transitions. [2022-04-06 08:35:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 08:35:41,372 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:41,372 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:41,372 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-04-06 08:35:41,372 INFO L403 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:41,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:41,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1368905532, now seen corresponding path program 1 times [2022-04-06 08:35:41,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:41,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864616642] [2022-04-06 08:35:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:41,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:41,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:41,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:41,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:41,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:41,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 08:35:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:41,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864616642] [2022-04-06 08:35:41,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864616642] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:41,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:41,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 08:35:41,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872305674] [2022-04-06 08:35:41,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:41,557 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 08:35:41,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 08:35:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-04-06 08:35:41,557 INFO L87 Difference]: Start difference. First operand 904 states and 1123 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) [2022-04-06 08:35:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:43,516 INFO L93 Difference]: Finished difference Result 1156 states and 1445 transitions. [2022-04-06 08:35:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 08:35:43,517 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 [2022-04-06 08:35:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:43,519 INFO L225 Difference]: With dead ends: 1156 [2022-04-06 08:35:43,519 INFO L226 Difference]: Without dead ends: 1156 [2022-04-06 08:35:43,519 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2022-04-06 08:35:43,519 INFO L913 BasicCegarLoop]: 652 mSDtfsCounter, 3494 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 1196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 3516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:43,519 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3498 Valid, 1507 Invalid, 3516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1196 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-06 08:35:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-04-06 08:35:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 997. [2022-04-06 08:35:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 786 states have (on average 1.251908396946565) internal successors, (984), 802 states have internal predecessors, (984), 109 states have call successors, (109), 78 states have call predecessors, (109), 101 states have return successors, (142), 121 states have call predecessors, (142), 104 states have call successors, (142) [2022-04-06 08:35:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1235 transitions. [2022-04-06 08:35:43,531 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1235 transitions. Word has length 73 [2022-04-06 08:35:43,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:43,531 INFO L478 AbstractCegarLoop]: Abstraction has 997 states and 1235 transitions. [2022-04-06 08:35:43,531 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) [2022-04-06 08:35:43,531 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1235 transitions. [2022-04-06 08:35:43,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 08:35:43,532 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:43,532 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:43,532 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-04-06 08:35:43,532 INFO L403 AbstractCegarLoop]: === Iteration 63 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash -529895932, now seen corresponding path program 1 times [2022-04-06 08:35:43,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:43,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044935642] [2022-04-06 08:35:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:43,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:43,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:43,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 08:35:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:35:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:43,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:43,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044935642] [2022-04-06 08:35:43,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044935642] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:43,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:43,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 08:35:43,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873417610] [2022-04-06 08:35:43,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:43,744 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 08:35:43,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 08:35:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-04-06 08:35:43,745 INFO L87 Difference]: Start difference. First operand 997 states and 1235 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) [2022-04-06 08:35:44,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:44,654 INFO L93 Difference]: Finished difference Result 1093 states and 1373 transitions. [2022-04-06 08:35:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 08:35:44,655 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 [2022-04-06 08:35:44,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:44,656 INFO L225 Difference]: With dead ends: 1093 [2022-04-06 08:35:44,656 INFO L226 Difference]: Without dead ends: 1063 [2022-04-06 08:35:44,656 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:35:44,657 INFO L913 BasicCegarLoop]: 381 mSDtfsCounter, 896 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:44,657 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 1252 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 08:35:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-04-06 08:35:44,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 979. [2022-04-06 08:35:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 772 states have (on average 1.2512953367875648) internal successors, (966), 788 states have internal predecessors, (966), 105 states have call successors, (105), 78 states have call predecessors, (105), 101 states have return successors, (136), 117 states have call predecessors, (136), 100 states have call successors, (136) [2022-04-06 08:35:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1207 transitions. [2022-04-06 08:35:44,666 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1207 transitions. Word has length 75 [2022-04-06 08:35:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:44,666 INFO L478 AbstractCegarLoop]: Abstraction has 979 states and 1207 transitions. [2022-04-06 08:35:44,666 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) [2022-04-06 08:35:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1207 transitions. [2022-04-06 08:35:44,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-04-06 08:35:44,667 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:44,667 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:44,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-04-06 08:35:44,667 INFO L403 AbstractCegarLoop]: === Iteration 64 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:44,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1642144115, now seen corresponding path program 1 times [2022-04-06 08:35:44,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:44,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043542371] [2022-04-06 08:35:44,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:44,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:44,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:44,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:44,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:44,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-06 08:35:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:44,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 08:35:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:44,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:44,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043542371] [2022-04-06 08:35:44,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043542371] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:44,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:44,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:44,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353219582] [2022-04-06 08:35:44,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:44,852 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:44,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:44,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:44,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:44,852 INFO L87 Difference]: Start difference. First operand 979 states and 1207 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) [2022-04-06 08:35:45,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:45,589 INFO L93 Difference]: Finished difference Result 1059 states and 1325 transitions. [2022-04-06 08:35:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:45,590 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 [2022-04-06 08:35:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:45,591 INFO L225 Difference]: With dead ends: 1059 [2022-04-06 08:35:45,591 INFO L226 Difference]: Without dead ends: 1047 [2022-04-06 08:35:45,591 INFO L912 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 [2022-04-06 08:35:45,592 INFO L913 BasicCegarLoop]: 368 mSDtfsCounter, 679 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:45,592 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 1119 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 08:35:45,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-04-06 08:35:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 963. [2022-04-06 08:35:45,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 758 states have (on average 1.2506596306068603) internal successors, (948), 774 states have internal predecessors, (948), 103 states have call successors, (103), 78 states have call predecessors, (103), 101 states have return successors, (132), 115 states have call predecessors, (132), 98 states have call successors, (132) [2022-04-06 08:35:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1183 transitions. [2022-04-06 08:35:45,603 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1183 transitions. Word has length 73 [2022-04-06 08:35:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:45,603 INFO L478 AbstractCegarLoop]: Abstraction has 963 states and 1183 transitions. [2022-04-06 08:35:45,603 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) [2022-04-06 08:35:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1183 transitions. [2022-04-06 08:35:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-06 08:35:45,605 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:45,605 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:45,605 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-04-06 08:35:45,605 INFO L403 AbstractCegarLoop]: === Iteration 65 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:45,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash 780600349, now seen corresponding path program 1 times [2022-04-06 08:35:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:45,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870856309] [2022-04-06 08:35:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:45,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:45,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:45,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:45,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:45,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 08:35:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:45,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:45,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 08:35:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:45,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:45,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870856309] [2022-04-06 08:35:45,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870856309] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:45,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:45,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 08:35:45,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265351453] [2022-04-06 08:35:45,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:45,844 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 08:35:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:45,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 08:35:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:35:45,845 INFO L87 Difference]: Start difference. First operand 963 states and 1183 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) [2022-04-06 08:35:46,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:46,688 INFO L93 Difference]: Finished difference Result 1033 states and 1287 transitions. [2022-04-06 08:35:46,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 08:35:46,688 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 [2022-04-06 08:35:46,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:46,690 INFO L225 Difference]: With dead ends: 1033 [2022-04-06 08:35:46,690 INFO L226 Difference]: Without dead ends: 1033 [2022-04-06 08:35:46,690 INFO L912 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 [2022-04-06 08:35:46,691 INFO L913 BasicCegarLoop]: 360 mSDtfsCounter, 595 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:46,691 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 1429 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 08:35:46,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-04-06 08:35:46,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 949. [2022-04-06 08:35:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 744 states have (on average 1.2446236559139785) internal successors, (926), 760 states have internal predecessors, (926), 103 states have call successors, (103), 78 states have call predecessors, (103), 101 states have return successors, (132), 115 states have call predecessors, (132), 98 states have call successors, (132) [2022-04-06 08:35:46,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1161 transitions. [2022-04-06 08:35:46,700 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1161 transitions. Word has length 77 [2022-04-06 08:35:46,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:46,700 INFO L478 AbstractCegarLoop]: Abstraction has 949 states and 1161 transitions. [2022-04-06 08:35:46,700 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) [2022-04-06 08:35:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1161 transitions. [2022-04-06 08:35:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 08:35:46,702 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:46,702 INFO L499 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] [2022-04-06 08:35:46,702 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-04-06 08:35:46,702 INFO L403 AbstractCegarLoop]: === Iteration 66 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1219602648, now seen corresponding path program 1 times [2022-04-06 08:35:46,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:46,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130380308] [2022-04-06 08:35:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:46,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:46,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:46,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:46,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:46,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:46,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:46,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-04-06 08:35:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:46,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-04-06 08:35:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 08:35:46,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:46,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130380308] [2022-04-06 08:35:46,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130380308] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:46,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:46,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:46,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539651345] [2022-04-06 08:35:46,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:46,867 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:46,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:46,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:46,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:46,868 INFO L87 Difference]: Start difference. First operand 949 states and 1161 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) [2022-04-06 08:35:47,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:47,797 INFO L93 Difference]: Finished difference Result 1033 states and 1285 transitions. [2022-04-06 08:35:47,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:47,797 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 [2022-04-06 08:35:47,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:47,799 INFO L225 Difference]: With dead ends: 1033 [2022-04-06 08:35:47,799 INFO L226 Difference]: Without dead ends: 1013 [2022-04-06 08:35:47,799 INFO L912 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 [2022-04-06 08:35:47,799 INFO L913 BasicCegarLoop]: 361 mSDtfsCounter, 485 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:47,800 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1204 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 08:35:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-04-06 08:35:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 929. [2022-04-06 08:35:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 728 states have (on average 1.2445054945054945) internal successors, (906), 744 states have internal predecessors, (906), 99 states have call successors, (99), 78 states have call predecessors, (99), 101 states have return successors, (128), 111 states have call predecessors, (128), 94 states have call successors, (128) [2022-04-06 08:35:47,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1133 transitions. [2022-04-06 08:35:47,809 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1133 transitions. Word has length 75 [2022-04-06 08:35:47,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:47,809 INFO L478 AbstractCegarLoop]: Abstraction has 929 states and 1133 transitions. [2022-04-06 08:35:47,809 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) [2022-04-06 08:35:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1133 transitions. [2022-04-06 08:35:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-06 08:35:47,811 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:47,811 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:47,811 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-04-06 08:35:47,811 INFO L403 AbstractCegarLoop]: === Iteration 67 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:47,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:47,811 INFO L85 PathProgramCache]: Analyzing trace with hash 968314861, now seen corresponding path program 1 times [2022-04-06 08:35:47,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:47,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040223397] [2022-04-06 08:35:47,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:47,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:47,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:47,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:47,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:47,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 08:35:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:47,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:47,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:47,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040223397] [2022-04-06 08:35:47,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040223397] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:47,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:47,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 08:35:47,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974748987] [2022-04-06 08:35:47,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:47,991 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 08:35:47,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:47,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 08:35:47,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-06 08:35:47,991 INFO L87 Difference]: Start difference. First operand 929 states and 1133 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 10 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 08:35:48,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:48,534 INFO L93 Difference]: Finished difference Result 1027 states and 1277 transitions. [2022-04-06 08:35:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 08:35:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 10 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-04-06 08:35:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:48,542 INFO L225 Difference]: With dead ends: 1027 [2022-04-06 08:35:48,543 INFO L226 Difference]: Without dead ends: 1027 [2022-04-06 08:35:48,543 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:35:48,543 INFO L913 BasicCegarLoop]: 354 mSDtfsCounter, 783 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:48,543 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 781 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 08:35:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-04-06 08:35:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 931. [2022-04-06 08:35:48,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 730 states have (on average 1.2438356164383562) internal successors, (908), 746 states have internal predecessors, (908), 99 states have call successors, (99), 78 states have call predecessors, (99), 101 states have return successors, (128), 111 states have call predecessors, (128), 94 states have call successors, (128) [2022-04-06 08:35:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1135 transitions. [2022-04-06 08:35:48,551 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1135 transitions. Word has length 79 [2022-04-06 08:35:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:48,551 INFO L478 AbstractCegarLoop]: Abstraction has 931 states and 1135 transitions. [2022-04-06 08:35:48,551 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 10 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 08:35:48,551 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1135 transitions. [2022-04-06 08:35:48,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-06 08:35:48,553 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:48,553 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:48,553 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-04-06 08:35:48,553 INFO L403 AbstractCegarLoop]: === Iteration 68 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:48,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1993806860, now seen corresponding path program 1 times [2022-04-06 08:35:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:48,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087446862] [2022-04-06 08:35:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:48,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 08:35:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:48,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:48,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087446862] [2022-04-06 08:35:48,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087446862] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:48,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:48,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 08:35:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077779456] [2022-04-06 08:35:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:48,770 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 08:35:48,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 08:35:48,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-04-06 08:35:48,770 INFO L87 Difference]: Start difference. First operand 931 states and 1135 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-04-06 08:35:49,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:49,587 INFO L93 Difference]: Finished difference Result 983 states and 1205 transitions. [2022-04-06 08:35:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 08:35:49,587 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 5 states have internal predecessors, (59), 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 79 [2022-04-06 08:35:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:49,589 INFO L225 Difference]: With dead ends: 983 [2022-04-06 08:35:49,589 INFO L226 Difference]: Without dead ends: 983 [2022-04-06 08:35:49,589 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:35:49,589 INFO L913 BasicCegarLoop]: 335 mSDtfsCounter, 318 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:49,589 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 1381 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 08:35:49,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-04-06 08:35:49,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 913. [2022-04-06 08:35:49,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 714 states have (on average 1.2352941176470589) internal successors, (882), 730 states have internal predecessors, (882), 97 states have call successors, (97), 78 states have call predecessors, (97), 101 states have return successors, (126), 109 states have call predecessors, (126), 92 states have call successors, (126) [2022-04-06 08:35:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1105 transitions. [2022-04-06 08:35:49,598 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1105 transitions. Word has length 79 [2022-04-06 08:35:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:49,598 INFO L478 AbstractCegarLoop]: Abstraction has 913 states and 1105 transitions. [2022-04-06 08:35:49,598 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-04-06 08:35:49,598 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1105 transitions. [2022-04-06 08:35:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-06 08:35:49,599 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:49,599 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:49,599 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-04-06 08:35:49,599 INFO L403 AbstractCegarLoop]: === Iteration 69 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:49,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:49,600 INFO L85 PathProgramCache]: Analyzing trace with hash 590503932, now seen corresponding path program 1 times [2022-04-06 08:35:49,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:49,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486946529] [2022-04-06 08:35:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:49,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 08:35:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:49,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:49,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486946529] [2022-04-06 08:35:49,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486946529] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:49,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:49,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-04-06 08:35:49,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433379968] [2022-04-06 08:35:49,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:49,887 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-06 08:35:49,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:49,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-06 08:35:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-04-06 08:35:49,888 INFO L87 Difference]: Start difference. First operand 913 states and 1105 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) [2022-04-06 08:35:50,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:50,989 INFO L93 Difference]: Finished difference Result 1002 states and 1225 transitions. [2022-04-06 08:35:50,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-04-06 08:35:50,989 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 [2022-04-06 08:35:50,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:50,991 INFO L225 Difference]: With dead ends: 1002 [2022-04-06 08:35:50,991 INFO L226 Difference]: Without dead ends: 913 [2022-04-06 08:35:50,991 INFO L912 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 [2022-04-06 08:35:50,991 INFO L913 BasicCegarLoop]: 343 mSDtfsCounter, 322 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:50,992 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 2079 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 08:35:50,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-04-06 08:35:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 861. [2022-04-06 08:35:50,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 676 states have (on average 1.242603550295858) internal successors, (840), 692 states have internal predecessors, (840), 87 states have call successors, (87), 74 states have call predecessors, (87), 97 states have return successors, (114), 99 states have call predecessors, (114), 82 states have call successors, (114) [2022-04-06 08:35:50,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1041 transitions. [2022-04-06 08:35:50,999 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1041 transitions. Word has length 77 [2022-04-06 08:35:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:50,999 INFO L478 AbstractCegarLoop]: Abstraction has 861 states and 1041 transitions. [2022-04-06 08:35:50,999 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) [2022-04-06 08:35:50,999 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1041 transitions. [2022-04-06 08:35:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-04-06 08:35:51,001 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:51,001 INFO L499 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] [2022-04-06 08:35:51,001 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-04-06 08:35:51,001 INFO L403 AbstractCegarLoop]: === Iteration 70 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:51,001 INFO L85 PathProgramCache]: Analyzing trace with hash 461830745, now seen corresponding path program 1 times [2022-04-06 08:35:51,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:51,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124372188] [2022-04-06 08:35:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:51,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-04-06 08:35:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 08:35:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-06 08:35:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 08:35:51,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:51,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124372188] [2022-04-06 08:35:51,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124372188] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 08:35:51,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766643252] [2022-04-06 08:35:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:51,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 08:35:51,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 08:35:51,272 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) [2022-04-06 08:35:51,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 08:35:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-06 08:35:51,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 08:35:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:51,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 08:35:51,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766643252] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:51,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 08:35:51,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 12 [2022-04-06 08:35:51,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692640663] [2022-04-06 08:35:51,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:51,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 08:35:51,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:51,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 08:35:51,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:51,604 INFO L87 Difference]: Start difference. First operand 861 states and 1041 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) [2022-04-06 08:35:51,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:51,619 INFO L93 Difference]: Finished difference Result 828 states and 1001 transitions. [2022-04-06 08:35:51,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 08:35:51,620 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 [2022-04-06 08:35:51,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:51,621 INFO L225 Difference]: With dead ends: 828 [2022-04-06 08:35:51,621 INFO L226 Difference]: Without dead ends: 800 [2022-04-06 08:35:51,621 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:51,628 INFO L913 BasicCegarLoop]: 296 mSDtfsCounter, 0 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:51,629 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1178 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 08:35:51,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-04-06 08:35:51,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2022-04-06 08:35:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 630 states have (on average 1.2507936507936508) internal successors, (788), 643 states have internal predecessors, (788), 81 states have call successors, (81), 71 states have call predecessors, (81), 88 states have return successors, (102), 90 states have call predecessors, (102), 76 states have call successors, (102) [2022-04-06 08:35:51,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 971 transitions. [2022-04-06 08:35:51,637 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 971 transitions. Word has length 77 [2022-04-06 08:35:51,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:51,637 INFO L478 AbstractCegarLoop]: Abstraction has 800 states and 971 transitions. [2022-04-06 08:35:51,637 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) [2022-04-06 08:35:51,637 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 971 transitions. [2022-04-06 08:35:51,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-04-06 08:35:51,638 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:51,638 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:51,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-06 08:35:51,856 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,SelfDestructingSolverStorable69 [2022-04-06 08:35:51,857 INFO L403 AbstractCegarLoop]: === Iteration 71 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1363389701, now seen corresponding path program 1 times [2022-04-06 08:35:51,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:51,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236317335] [2022-04-06 08:35:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:51,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 08:35:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:51,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-04-06 08:35:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:52,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236317335] [2022-04-06 08:35:52,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236317335] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:52,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:52,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-06 08:35:52,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665602370] [2022-04-06 08:35:52,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:52,048 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 08:35:52,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:52,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 08:35:52,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-04-06 08:35:52,048 INFO L87 Difference]: Start difference. First operand 800 states and 971 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) [2022-04-06 08:35:52,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:52,741 INFO L93 Difference]: Finished difference Result 852 states and 1043 transitions. [2022-04-06 08:35:52,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 08:35:52,742 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 [2022-04-06 08:35:52,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:52,743 INFO L225 Difference]: With dead ends: 852 [2022-04-06 08:35:52,743 INFO L226 Difference]: Without dead ends: 852 [2022-04-06 08:35:52,743 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-04-06 08:35:52,743 INFO L913 BasicCegarLoop]: 275 mSDtfsCounter, 675 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:52,743 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 807 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 08:35:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-04-06 08:35:52,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 800. [2022-04-06 08:35:52,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 630 states have (on average 1.2476190476190476) internal successors, (786), 643 states have internal predecessors, (786), 81 states have call successors, (81), 71 states have call predecessors, (81), 88 states have return successors, (102), 90 states have call predecessors, (102), 76 states have call successors, (102) [2022-04-06 08:35:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 969 transitions. [2022-04-06 08:35:52,750 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 969 transitions. Word has length 81 [2022-04-06 08:35:52,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:52,750 INFO L478 AbstractCegarLoop]: Abstraction has 800 states and 969 transitions. [2022-04-06 08:35:52,750 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) [2022-04-06 08:35:52,750 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 969 transitions. [2022-04-06 08:35:52,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-04-06 08:35:52,751 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:52,751 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:52,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-04-06 08:35:52,751 INFO L403 AbstractCegarLoop]: === Iteration 72 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:52,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:52,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1220432173, now seen corresponding path program 1 times [2022-04-06 08:35:52,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:52,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380850468] [2022-04-06 08:35:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:52,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-04-06 08:35:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:52,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:52,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:52,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380850468] [2022-04-06 08:35:52,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380850468] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:52,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:52,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 08:35:52,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773066485] [2022-04-06 08:35:52,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:52,967 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 08:35:52,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:52,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 08:35:52,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-04-06 08:35:52,968 INFO L87 Difference]: Start difference. First operand 800 states and 969 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) [2022-04-06 08:35:54,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:54,521 INFO L93 Difference]: Finished difference Result 804 states and 980 transitions. [2022-04-06 08:35:54,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-06 08:35:54,521 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 [2022-04-06 08:35:54,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:54,522 INFO L225 Difference]: With dead ends: 804 [2022-04-06 08:35:54,522 INFO L226 Difference]: Without dead ends: 764 [2022-04-06 08:35:54,522 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=851, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 08:35:54,523 INFO L913 BasicCegarLoop]: 453 mSDtfsCounter, 887 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2856 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:54,523 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 1735 Invalid, 3186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2856 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-04-06 08:35:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-04-06 08:35:54,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 365. [2022-04-06 08:35:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 287 states have (on average 1.2473867595818815) internal successors, (358), 292 states have internal predecessors, (358), 39 states have call successors, (39), 35 states have call predecessors, (39), 38 states have return successors, (44), 39 states have call predecessors, (44), 35 states have call successors, (44) [2022-04-06 08:35:54,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 441 transitions. [2022-04-06 08:35:54,527 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 441 transitions. Word has length 78 [2022-04-06 08:35:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:54,527 INFO L478 AbstractCegarLoop]: Abstraction has 365 states and 441 transitions. [2022-04-06 08:35:54,527 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) [2022-04-06 08:35:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 441 transitions. [2022-04-06 08:35:54,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-04-06 08:35:54,528 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:54,528 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:54,528 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-04-06 08:35:54,528 INFO L403 AbstractCegarLoop]: === Iteration 73 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1514865381, now seen corresponding path program 1 times [2022-04-06 08:35:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:54,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120673442] [2022-04-06 08:35:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:54,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-04-06 08:35:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-04-06 08:35:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-04-06 08:35:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 08:35:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:54,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:54,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120673442] [2022-04-06 08:35:54,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120673442] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:54,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:54,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 08:35:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408541395] [2022-04-06 08:35:54,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:54,799 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 08:35:54,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:54,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 08:35:54,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-04-06 08:35:54,799 INFO L87 Difference]: Start difference. First operand 365 states and 441 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) [2022-04-06 08:35:55,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:55,670 INFO L93 Difference]: Finished difference Result 390 states and 476 transitions. [2022-04-06 08:35:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 08:35:55,671 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 [2022-04-06 08:35:55,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:55,671 INFO L225 Difference]: With dead ends: 390 [2022-04-06 08:35:55,671 INFO L226 Difference]: Without dead ends: 305 [2022-04-06 08:35:55,671 INFO L912 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 [2022-04-06 08:35:55,672 INFO L913 BasicCegarLoop]: 237 mSDtfsCounter, 101 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:55,673 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1778 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 08:35:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-04-06 08:35:55,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 288. [2022-04-06 08:35:55,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 224 states have (on average 1.2678571428571428) internal successors, (284), 227 states have internal predecessors, (284), 31 states have call successors, (31), 29 states have call predecessors, (31), 32 states have return successors, (37), 32 states have call predecessors, (37), 28 states have call successors, (37) [2022-04-06 08:35:55,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 352 transitions. [2022-04-06 08:35:55,676 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 352 transitions. Word has length 79 [2022-04-06 08:35:55,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:55,677 INFO L478 AbstractCegarLoop]: Abstraction has 288 states and 352 transitions. [2022-04-06 08:35:55,677 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) [2022-04-06 08:35:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 352 transitions. [2022-04-06 08:35:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-04-06 08:35:55,677 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:55,677 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:55,677 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-04-06 08:35:55,677 INFO L403 AbstractCegarLoop]: === Iteration 74 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:55,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1000162365, now seen corresponding path program 1 times [2022-04-06 08:35:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:55,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034693715] [2022-04-06 08:35:55,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:55,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 08:35:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 08:35:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:55,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:55,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034693715] [2022-04-06 08:35:55,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034693715] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:55,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:55,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 08:35:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141127892] [2022-04-06 08:35:55,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:55,821 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 08:35:55,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:55,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 08:35:55,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-04-06 08:35:55,822 INFO L87 Difference]: Start difference. First operand 288 states and 352 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) [2022-04-06 08:35:56,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:56,160 INFO L93 Difference]: Finished difference Result 296 states and 347 transitions. [2022-04-06 08:35:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 08:35:56,161 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 [2022-04-06 08:35:56,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:56,161 INFO L225 Difference]: With dead ends: 296 [2022-04-06 08:35:56,161 INFO L226 Difference]: Without dead ends: 296 [2022-04-06 08:35:56,161 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:35:56,162 INFO L913 BasicCegarLoop]: 221 mSDtfsCounter, 306 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:56,162 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 662 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 08:35:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-04-06 08:35:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 246. [2022-04-06 08:35:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 189 states have (on average 1.1904761904761905) internal successors, (225), 193 states have internal predecessors, (225), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-04-06 08:35:56,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 284 transitions. [2022-04-06 08:35:56,164 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 284 transitions. Word has length 83 [2022-04-06 08:35:56,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:56,164 INFO L478 AbstractCegarLoop]: Abstraction has 246 states and 284 transitions. [2022-04-06 08:35:56,164 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) [2022-04-06 08:35:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 284 transitions. [2022-04-06 08:35:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-04-06 08:35:56,165 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:56,165 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:56,165 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-04-06 08:35:56,165 INFO L403 AbstractCegarLoop]: === Iteration 75 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2124626258, now seen corresponding path program 1 times [2022-04-06 08:35:56,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:56,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953250560] [2022-04-06 08:35:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:56,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:35:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 08:35:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-04-06 08:35:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:56,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:56,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953250560] [2022-04-06 08:35:56,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953250560] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:56,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:56,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 08:35:56,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800805698] [2022-04-06 08:35:56,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:56,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 08:35:56,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 08:35:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-04-06 08:35:56,432 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) [2022-04-06 08:35:56,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:56,908 INFO L93 Difference]: Finished difference Result 301 states and 344 transitions. [2022-04-06 08:35:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-04-06 08:35:56,908 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 [2022-04-06 08:35:56,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:56,909 INFO L225 Difference]: With dead ends: 301 [2022-04-06 08:35:56,909 INFO L226 Difference]: Without dead ends: 272 [2022-04-06 08:35:56,909 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2022-04-06 08:35:56,909 INFO L913 BasicCegarLoop]: 172 mSDtfsCounter, 301 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:56,909 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 1141 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 08:35:56,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-04-06 08:35:56,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 245. [2022-04-06 08:35:56,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 188 states have (on average 1.175531914893617) internal successors, (221), 192 states have internal predecessors, (221), 29 states have call successors, (29), 26 states have call predecessors, (29), 27 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-04-06 08:35:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 280 transitions. [2022-04-06 08:35:56,912 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 280 transitions. Word has length 99 [2022-04-06 08:35:56,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:56,912 INFO L478 AbstractCegarLoop]: Abstraction has 245 states and 280 transitions. [2022-04-06 08:35:56,912 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) [2022-04-06 08:35:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 280 transitions. [2022-04-06 08:35:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-06 08:35:56,912 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:56,912 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:56,913 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-04-06 08:35:56,913 INFO L403 AbstractCegarLoop]: === Iteration 76 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:56,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:56,913 INFO L85 PathProgramCache]: Analyzing trace with hash 515298531, now seen corresponding path program 1 times [2022-04-06 08:35:56,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:56,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524589473] [2022-04-06 08:35:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:56,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:57,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:35:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:57,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:57,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:57,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:57,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:57,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:57,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 08:35:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:57,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-06 08:35:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:57,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:57,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524589473] [2022-04-06 08:35:57,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524589473] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:57,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:57,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-06 08:35:57,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238310509] [2022-04-06 08:35:57,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:57,225 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 08:35:57,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:57,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 08:35:57,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:35:57,226 INFO L87 Difference]: Start difference. First operand 245 states and 280 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) [2022-04-06 08:35:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:58,330 INFO L93 Difference]: Finished difference Result 488 states and 556 transitions. [2022-04-06 08:35:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-06 08:35:58,330 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 [2022-04-06 08:35:58,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:58,331 INFO L225 Difference]: With dead ends: 488 [2022-04-06 08:35:58,331 INFO L226 Difference]: Without dead ends: 483 [2022-04-06 08:35:58,332 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=245, Invalid=1315, Unknown=0, NotChecked=0, Total=1560 [2022-04-06 08:35:58,332 INFO L913 BasicCegarLoop]: 278 mSDtfsCounter, 756 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:58,332 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 1008 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-04-06 08:35:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-04-06 08:35:58,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 360. [2022-04-06 08:35:58,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 278 states have (on average 1.169064748201439) internal successors, (325), 284 states have internal predecessors, (325), 41 states have call successors, (41), 38 states have call predecessors, (41), 40 states have return successors, (43), 38 states have call predecessors, (43), 39 states have call successors, (43) [2022-04-06 08:35:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 409 transitions. [2022-04-06 08:35:58,335 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 409 transitions. Word has length 101 [2022-04-06 08:35:58,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:58,335 INFO L478 AbstractCegarLoop]: Abstraction has 360 states and 409 transitions. [2022-04-06 08:35:58,335 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) [2022-04-06 08:35:58,335 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 409 transitions. [2022-04-06 08:35:58,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-04-06 08:35:58,336 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:58,336 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:35:58,336 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-04-06 08:35:58,336 INFO L403 AbstractCegarLoop]: === Iteration 77 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:58,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1453830146, now seen corresponding path program 1 times [2022-04-06 08:35:58,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:58,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708463461] [2022-04-06 08:35:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:58,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:35:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-04-06 08:35:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 08:35:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-04-06 08:35:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 08:35:58,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:58,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708463461] [2022-04-06 08:35:58,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708463461] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:58,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:58,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-04-06 08:35:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037936893] [2022-04-06 08:35:58,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:58,554 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 08:35:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:58,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 08:35:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-04-06 08:35:58,555 INFO L87 Difference]: Start difference. First operand 360 states and 409 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) [2022-04-06 08:35:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:58,854 INFO L93 Difference]: Finished difference Result 398 states and 455 transitions. [2022-04-06 08:35:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 08:35:58,855 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 [2022-04-06 08:35:58,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:58,855 INFO L225 Difference]: With dead ends: 398 [2022-04-06 08:35:58,855 INFO L226 Difference]: Without dead ends: 345 [2022-04-06 08:35:58,856 INFO L912 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 [2022-04-06 08:35:58,856 INFO L913 BasicCegarLoop]: 175 mSDtfsCounter, 196 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:58,856 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 1006 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 08:35:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-04-06 08:35:58,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 146. [2022-04-06 08:35:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 114 states have internal predecessors, (128), 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) [2022-04-06 08:35:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 161 transitions. [2022-04-06 08:35:58,858 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 161 transitions. Word has length 101 [2022-04-06 08:35:58,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:58,858 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 161 transitions. [2022-04-06 08:35:58,858 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) [2022-04-06 08:35:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 161 transitions. [2022-04-06 08:35:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-04-06 08:35:58,859 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:58,859 INFO L499 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] [2022-04-06 08:35:58,859 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-04-06 08:35:58,859 INFO L403 AbstractCegarLoop]: === Iteration 78 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:58,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1992976348, now seen corresponding path program 1 times [2022-04-06 08:35:58,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:58,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518875379] [2022-04-06 08:35:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:58,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:35:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:58,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:59,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 08:35:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-04-06 08:35:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-04-06 08:35:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-06 08:35:59,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:59,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518875379] [2022-04-06 08:35:59,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518875379] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:59,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:59,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 08:35:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031228444] [2022-04-06 08:35:59,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:59,040 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 08:35:59,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 08:35:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-04-06 08:35:59,040 INFO L87 Difference]: Start difference. First operand 146 states and 161 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 08:35:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:35:59,268 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2022-04-06 08:35:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 08:35:59,268 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 115 [2022-04-06 08:35:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:35:59,268 INFO L225 Difference]: With dead ends: 158 [2022-04-06 08:35:59,269 INFO L226 Difference]: Without dead ends: 158 [2022-04-06 08:35:59,269 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2022-04-06 08:35:59,269 INFO L913 BasicCegarLoop]: 112 mSDtfsCounter, 368 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 08:35:59,269 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 301 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 08:35:59,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-04-06 08:35:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2022-04-06 08:35:59,270 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) [2022-04-06 08:35:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2022-04-06 08:35:59,271 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 115 [2022-04-06 08:35:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:35:59,271 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2022-04-06 08:35:59,271 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (15), 11 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-04-06 08:35:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2022-04-06 08:35:59,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 08:35:59,271 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:35:59,271 INFO L499 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] [2022-04-06 08:35:59,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-04-06 08:35:59,272 INFO L403 AbstractCegarLoop]: === Iteration 79 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:35:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:35:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1647793681, now seen corresponding path program 1 times [2022-04-06 08:35:59,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:35:59,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261976495] [2022-04-06 08:35:59,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:35:59,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:35:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:35:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:35:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:35:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:35:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 08:35:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:35:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:35:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:35:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 08:35:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 08:35:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 08:35:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:35:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-06 08:35:59,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:35:59,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261976495] [2022-04-06 08:35:59,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261976495] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:35:59,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:35:59,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-04-06 08:35:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106748330] [2022-04-06 08:35:59,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:35:59,487 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 08:35:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:35:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 08:35:59,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-04-06 08:35:59,487 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) [2022-04-06 08:36:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:36:00,084 INFO L93 Difference]: Finished difference Result 255 states and 277 transitions. [2022-04-06 08:36:00,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-06 08:36:00,085 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 [2022-04-06 08:36:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:36:00,085 INFO L225 Difference]: With dead ends: 255 [2022-04-06 08:36:00,085 INFO L226 Difference]: Without dead ends: 152 [2022-04-06 08:36:00,085 INFO L912 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 [2022-04-06 08:36:00,086 INFO L913 BasicCegarLoop]: 107 mSDtfsCounter, 434 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 08:36:00,086 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 375 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 08:36:00,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-04-06 08:36:00,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-04-06 08:36:00,087 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) [2022-04-06 08:36:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 165 transitions. [2022-04-06 08:36:00,087 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 165 transitions. Word has length 116 [2022-04-06 08:36:00,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:36:00,087 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 165 transitions. [2022-04-06 08:36:00,087 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) [2022-04-06 08:36:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 165 transitions. [2022-04-06 08:36:00,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 08:36:00,088 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 08:36:00,088 INFO L499 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] [2022-04-06 08:36:00,088 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-04-06 08:36:00,088 INFO L403 AbstractCegarLoop]: === Iteration 80 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 08:36:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 08:36:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1707014418, now seen corresponding path program 1 times [2022-04-06 08:36:00,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 08:36:00,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351376872] [2022-04-06 08:36:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 08:36:00,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 08:36:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 08:36:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 08:36:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 08:36:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-04-06 08:36:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:36:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 08:36:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:36:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-04-06 08:36:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 08:36:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-04-06 08:36:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-04-06 08:36:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-04-06 08:36:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-04-06 08:36:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 08:36:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-06 08:36:00,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 08:36:00,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351376872] [2022-04-06 08:36:00,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351376872] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 08:36:00,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 08:36:00,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-04-06 08:36:00,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692055368] [2022-04-06 08:36:00,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 08:36:00,362 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-06 08:36:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 08:36:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-06 08:36:00,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-04-06 08:36:00,363 INFO L87 Difference]: Start difference. First operand 152 states and 165 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) [2022-04-06 08:36:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 08:36:00,875 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2022-04-06 08:36:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 08:36:00,876 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 [2022-04-06 08:36:00,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 08:36:00,876 INFO L225 Difference]: With dead ends: 149 [2022-04-06 08:36:00,876 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 08:36:00,876 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2022-04-06 08:36:00,877 INFO L913 BasicCegarLoop]: 95 mSDtfsCounter, 265 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 08:36:00,877 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 327 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 08:36:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 08:36:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 08:36:00,877 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) [2022-04-06 08:36:00,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 08:36:00,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-04-06 08:36:00,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 08:36:00,877 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 08:36:00,877 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) [2022-04-06 08:36:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 08:36:00,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 08:36:00,879 INFO L788 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 08:36:00,880 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-04-06 08:36:00,882 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 08:36:00,882 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 08:36:00,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 08:36:00 BasicIcfg [2022-04-06 08:36:00,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 08:36:00,884 INFO L158 Benchmark]: Toolchain (without parser) took 140585.21ms. Allocated memory was 178.3MB in the beginning and 375.4MB in the end (delta: 197.1MB). Free memory was 127.3MB in the beginning and 129.1MB in the end (delta: -1.8MB). Peak memory consumption was 196.6MB. Max. memory is 8.0GB. [2022-04-06 08:36:00,884 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory was 145.5MB in the beginning and 145.3MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 08:36:00,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.24ms. Allocated memory is still 178.3MB. Free memory was 127.2MB in the beginning and 136.4MB in the end (delta: -9.3MB). Peak memory consumption was 15.8MB. Max. memory is 8.0GB. [2022-04-06 08:36:00,884 INFO L158 Benchmark]: Boogie Preprocessor took 71.74ms. Allocated memory is still 178.3MB. Free memory was 136.4MB in the beginning and 131.2MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-04-06 08:36:00,884 INFO L158 Benchmark]: RCFGBuilder took 968.86ms. Allocated memory was 178.3MB in the beginning and 242.2MB in the end (delta: 64.0MB). Free memory was 131.2MB in the beginning and 195.0MB in the end (delta: -63.8MB). Peak memory consumption was 53.1MB. Max. memory is 8.0GB. [2022-04-06 08:36:00,884 INFO L158 Benchmark]: IcfgTransformer took 51.41ms. Allocated memory is still 242.2MB. Free memory was 195.0MB in the beginning and 187.1MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-04-06 08:36:00,885 INFO L158 Benchmark]: TraceAbstraction took 139059.36ms. Allocated memory was 242.2MB in the beginning and 375.4MB in the end (delta: 133.2MB). Free memory was 186.6MB in the beginning and 129.1MB in the end (delta: 57.5MB). Peak memory consumption was 190.7MB. Max. memory is 8.0GB. [2022-04-06 08:36:00,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory was 145.5MB in the beginning and 145.3MB in the end (delta: 151.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 420.24ms. Allocated memory is still 178.3MB. Free memory was 127.2MB in the beginning and 136.4MB in the end (delta: -9.3MB). Peak memory consumption was 15.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 71.74ms. Allocated memory is still 178.3MB. Free memory was 136.4MB in the beginning and 131.2MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 968.86ms. Allocated memory was 178.3MB in the beginning and 242.2MB in the end (delta: 64.0MB). Free memory was 131.2MB in the beginning and 195.0MB in the end (delta: -63.8MB). Peak memory consumption was 53.1MB. Max. memory is 8.0GB. * IcfgTransformer took 51.41ms. Allocated memory is still 242.2MB. Free memory was 195.0MB in the beginning and 187.1MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 139059.36ms. Allocated memory was 242.2MB in the beginning and 375.4MB in the end (delta: 133.2MB). Free memory was 186.6MB in the beginning and 129.1MB in the end (delta: 57.5MB). Peak memory consumption was 190.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 59]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 30 procedures, 515 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 139.0s, OverallIterations: 80, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 120.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77736 SdHoareTripleChecker+Valid, 107.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77310 mSDsluCounter, 130860 SdHoareTripleChecker+Invalid, 91.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89062 mSDsCounter, 27268 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 202025 IncrementalHoareTripleChecker+Invalid, 229293 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27268 mSolverCounterUnsat, 41798 mSDtfsCounter, 202025 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2369 GetRequests, 978 SyntacticMatches, 11 SemanticMatches, 1380 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3622 ImplicationChecksByTransitivity, 19.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=997occurred in iteration=62, InterpolantAutomatonStates: 1084, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 80 MinimizatonAttempts, 9490 StatesRemovedByMinimization, 77 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 15.4s InterpolantComputationTime, 5233 NumberOfCodeBlocks, 5233 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 5152 ConstructedInterpolants, 0 QuantifiedInterpolants, 25276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 908 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 81 InterpolantComputations, 80 PerfectInterpolantSequences, 43/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-06 08:36:00,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...